Merge tag 'drm-intel-next-2018-09-06-2' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

Merge tag 'gvt-next-2018-09-04'
drm-intel-next-2018-09-06-1:
UAPI Changes:
- GGTT coherency GETPARAM: GGTT has turned out to be non-coherent for some
platforms, which we've failed to communicate to userspace so far. SNA was
modified to do extra flushing on non-coherent GGTT access, while Mesa will
mitigate by always requiring WC mapping (which is non-coherent anyway).
- Neuter Resource Streamer uAPI: There never really were users for the feature,
so neuter it while keeping the interface bits for compatibility. This is a
long due item from past.

Cross-subsystem Changes:
- Backmerge of branch drm-next-4.19 for DP_DPCD_REV_14 changes

Core Changes:
- None

Driver Changes:

- A load of Icelake (ICL) enabling patches (Paulo, Manasi)
- Enabled full PPGTT for IVB,VLV and HSW (Chris)
- Bugzilla #107113: Distribute DDB based on display resolutions (Mahesh)
- Bugzillas #100023,#107476,#94921: Support limited range DP displays (Jani)
- Bugzilla #107503: Increase LSPCON timeout (Fredrik)
- Avoid boosting GPU due to an occasional stall in interactive workloads (Chris)
- Apply GGTT coherency W/A only for affected systems instead of all (Chris)
- Fix for infinite link training loop for faulty USB-C MST hubs (Nathan)
- Keep KMS functional on Gen4 and earlier when GPU is wedged (Chris)
- Stop holding ppGTT reference from closed VMAs (Chris)
- Clear error registers after error capture (Lionel)
- Various Icelake fixes (Anusha, Jyoti, Ville, Tvrtko)
- Add missing Coffeelake (CFL) PCI IDs (Rodrigo)
- Flush execlists tasklet directly from reset-finish (Chris)
- Fix LPE audio runtime PM (Chris)
- Fix detection of out of range surface positions (GLK/CNL) (Ville)
- Remove wait-for-idle for PSR2 (Dhinakaran)
- Power down existing display hardware resources when display is disabled (Chris)
- Don't allow runtime power management if RC6 doesn't exist (Chris)
- Add debugging checks for runtime power management paths (Imre)
- Increase symmetry in display power init/fini paths (Imre)
- Isolate GVT specific macros from i915_reg.h (Lucas)
- Increase symmetry in power management enable/disable paths (Chris)
- Increase IP disable timeout to 100 ms to avoid DRM_ERROR (Imre)
- Fix memory leak from HDMI HDCP write function (Brian, Rodrigo)
- Reject Y/Yf tiling on interlaced modes (Ville)
- Use a cached mapping for the physical HWS on older gens (Chris)
- Force slow path of writing relocations to buffer if unable to write to userspace (Chris)
- Do a full device reset after being wedged (Chris)
- Keep forcewake counts over reset (in case of debugfs user) (Imre, Chris)
- Avoid false-positive errors from power wells during init (Imre)
- Reset engines forcibly in exchange of declaring whole device wedged (Mika)
- Reduce context HW ID lifetime in preparation for Icelake (Chris)
- Attempt to recover from module load failures (Chris)
- Keep select interrupts over a reset to avoid missing/losing them (Chris)
- GuC submission backend improvements (Jakub)
- Terminate context images with BB_END (Chris, Lionel)
- Make GCC evaluate GGTT view struct size assertions again (Ville)
- Add selftest to exercise suspend/hibernate code-paths for GEM (Chris)
- Use a full emulation of a user ppgtt context in selftests (Chris)
- Exercise resetting in the middle of a wait-on-fence in selftests (Chris)
- Fix coherency issues on selftests for Baytrail (Chris)
- Various other GEM fixes / self-test updates (Chris, Matt)
- GuC doorbell self-tests (Daniele)
- PSR mode control through debugfs for IGTs (Maarten)
- Degrade expected WM latency errors to DRM_DEBUG_KMS (Chris)
- Cope with errors better in MST link training (Dhinakaran)
- Fix WARN on KBL external displays (Azhar)
- Power well code cleanups (Imre)
- Fixes to PSR debugging (Dhinakaran)
- Make forcewake errors louder for easier catching in CI (WARNs) (Chris)
- Fortify tiling code against programmer errors (Chris)
- Bunch of fixes for CI exposed corner cases (multiple authors, mostly Chris)

Signed-off-by: Dave Airlie <[e-mail]>

From: Joonas Lahtinen <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/i915/Kconfig.debug

···
 	select SW_SYNC # signaling validation framework (igt/syncobj*)
 	select DRM_I915_SW_FENCE_DEBUG_OBJECTS
 	select DRM_I915_SELFTEST
+	select DRM_I915_DEBUG_RUNTIME_PM
         default n
         help
           Choose this option to turn on extra driver debugging that may affect
···
 	  the vblank.
 
 	  If in doubt, say "N".
+
+config DRM_I915_DEBUG_RUNTIME_PM
+	bool "Enable extra state checking for runtime PM"
+	depends on DRM_I915
+	default n
+	help
+	  Choose this option to turn on extra state checking for the
+	  runtime PM functionality. This may introduce overhead during
+	  driver loading, suspend and resume operations.
+
+	  If in doubt, say "N"

drivers/gpu/drm/i915/gvt/cfg_space.c

···
 
 /**
  * vgpu_pci_cfg_mem_write - write virtual cfg space memory
+ * @vgpu: target vgpu
+ * @off: offset
+ * @src: src ptr to write
+ * @bytes: number of bytes
  *
  * Use this function to write virtual cfg space memory.
  * For standard cfg space, only RW bits can be changed,
···
 
 /**
  * intel_vgpu_emulate_cfg_read - emulate vGPU configuration space read
+ * @vgpu: target vgpu
+ * @offset: offset
+ * @p_data: return data ptr
+ * @bytes: number of bytes to read
  *
  * Returns:
  * Zero on success, negative error code if failed.
···
 
 /**
  * intel_vgpu_emulate_cfg_read - emulate vGPU configuration space write
+ * @vgpu: target vgpu
+ * @offset: offset
+ * @p_data: write data ptr
+ * @bytes: number of bytes to write
  *
  * Returns:
  * Zero on success, negative error code if failed.

drivers/gpu/drm/i915/gvt/cmd_parser.c

···
 	return ret;
 }
 
+static int mi_noop_index;
+
 static struct cmd_info cmd_info[] = {
 	{"MI_NOOP", OP_MI_NOOP, F_LEN_CONST, R_ALL, D_ALL, 0, 1, NULL},
 
···
 
 	cmd = cmd_val(s, 0);
 
-	info = get_cmd_info(s->vgpu->gvt, cmd, s->ring_id);
+	/* fastpath for MI_NOOP */
+	if (cmd == MI_NOOP)
+		info = &cmd_info[mi_noop_index];
+	else
+		info = get_cmd_info(s->vgpu->gvt, cmd, s->ring_id);
+
 	if (info == NULL) {
 		gvt_vgpu_err("unknown cmd 0x%x, opcode=0x%x, addr_type=%s, ring %d, workload=%p\n",
 				cmd, get_opcode(cmd, s->ring_id),
···
 			kfree(e);
 			return -EEXIST;
 		}
+		if (cmd_info[i].opcode == OP_MI_NOOP)
+			mi_noop_index = i;
 
 		INIT_HLIST_NODE(&e->hlist);
 		add_cmd_entry(gvt, e);

drivers/gpu/drm/i915/gvt/display.c

···
 /**
  * intel_vgpu_init_display- initialize vGPU virtual display emulation
  * @vgpu: a vGPU
+ * @resolution: resolution index for intel_vgpu_edid
  *
  * This function is used to initialize vGPU virtual display emulation stuffs
  *

drivers/gpu/drm/i915/gvt/edid.c

···
 /**
  * intel_gvt_i2c_handle_gmbus_read - emulate gmbus register mmio read
  * @vgpu: a vGPU
+ * @offset: reg offset
+ * @p_data: data return buffer
+ * @bytes: access data length
  *
  * This function is used to emulate gmbus register mmio read
  *
···
 /**
  * intel_gvt_i2c_handle_gmbus_write - emulate gmbus register mmio write
  * @vgpu: a vGPU
+ * @offset: reg offset
+ * @p_data: data return buffer
+ * @bytes: access data length
  *
  * This function is used to emulate gmbus register mmio write
  *
···
 /**
  * intel_gvt_i2c_handle_aux_ch_write - emulate AUX channel register write
  * @vgpu: a vGPU
+ * @port_idx: port index
+ * @offset: reg offset
+ * @p_data: write ptr
  *
  * This function is used to emulate AUX channel register write
  *

drivers/gpu/drm/i915/gvt/gtt.c

···
 }
 
 /**
+ * Check if can do 2M page
+ * @vgpu: target vgpu
+ * @entry: target pfn's gtt entry
+ *
  * Return 1 if 2MB huge gtt shadowing is possilbe, 0 if miscondition,
  * negtive if found err.
  */
···
 
 /**
  * intel_vgpu_pin_mm - increase the pin count of a vGPU mm object
- * @vgpu: a vGPU
+ * @mm: target vgpu mm
  *
  * This function is called when user wants to use a vGPU mm object. If this
  * mm object hasn't been shadowed yet, the shadow will be populated at this
···
 /**
  * intel_vgpu_find_ppgtt_mm - find a PPGTT mm object
  * @vgpu: a vGPU
- * @page_table_level: PPGTT page table level
- * @root_entry: PPGTT page table root pointers
+ * @pdps: pdp root array
  *
  * This function is used to find a PPGTT mm object from mm object pool
  *

drivers/gpu/drm/i915/gvt/gvt.c

···
 
 /**
  * intel_gvt_init_host - Load MPT modules and detect if we're running in host
- * @gvt: intel gvt device
  *
  * This function is called at the driver loading stage. If failed to find a
  * loadable MPT module or detect currently we're running in a VM, then GVT-g
···
 
 /**
  * intel_gvt_clean_device - clean a GVT device
- * @gvt: intel gvt device
+ * @dev_priv: i915 private
  *
  * This function is called at the driver unloading stage, to free the
  * resources owned by a GVT device.

drivers/gpu/drm/i915/gvt/handlers.c

···
 {
 	write_vreg(vgpu, offset, p_data, bytes);
 
-	if (vgpu_vreg(vgpu, offset) & HSW_PWR_WELL_CTL_REQ(HSW_DISP_PW_GLOBAL))
+	if (vgpu_vreg(vgpu, offset) &
+	    HSW_PWR_WELL_CTL_REQ(HSW_PW_CTL_IDX_GLOBAL))
 		vgpu_vreg(vgpu, offset) |=
-			HSW_PWR_WELL_CTL_STATE(HSW_DISP_PW_GLOBAL);
+			HSW_PWR_WELL_CTL_STATE(HSW_PW_CTL_IDX_GLOBAL);
 	else
 		vgpu_vreg(vgpu, offset) &=
-			~HSW_PWR_WELL_CTL_STATE(HSW_DISP_PW_GLOBAL);
+			~HSW_PWR_WELL_CTL_STATE(HSW_PW_CTL_IDX_GLOBAL);
 	return 0;
 }
 
···
 
 	MMIO_F(PCH_GMBUS0, 4 * 4, 0, 0, 0, D_ALL, gmbus_mmio_read,
 		gmbus_mmio_write);
-	MMIO_F(PCH_GPIOA, 6 * 4, F_UNALIGN, 0, 0, D_ALL, NULL, NULL);
+	MMIO_F(PCH_GPIO_BASE, 6 * 4, F_UNALIGN, 0, 0, D_ALL, NULL, NULL);
 	MMIO_F(_MMIO(0xe4f00), 0x28, 0, 0, 0, D_ALL, NULL, NULL);
 
 	MMIO_F(_MMIO(_PCH_DPB_AUX_CH_CTL), 6 * 4, 0, 0, 0, D_PRE_SKL, NULL,
···
 	MMIO_D(GEN6_RC6p_THRESHOLD, D_ALL);
 	MMIO_D(GEN6_RC6pp_THRESHOLD, D_ALL);
 	MMIO_D(GEN6_PMINTRMSK, D_ALL);
-	/*
-	 * Use an arbitrary power well controlled by the PWR_WELL_CTL
-	 * register.
-	 */
-	MMIO_DH(HSW_PWR_WELL_CTL_BIOS(HSW_DISP_PW_GLOBAL), D_BDW, NULL,
-		power_well_ctl_mmio_write);
-	MMIO_DH(HSW_PWR_WELL_CTL_DRIVER(HSW_DISP_PW_GLOBAL), D_BDW, NULL,
-		power_well_ctl_mmio_write);
-	MMIO_DH(HSW_PWR_WELL_CTL_KVMR, D_BDW, NULL, power_well_ctl_mmio_write);
-	MMIO_DH(HSW_PWR_WELL_CTL_DEBUG(HSW_DISP_PW_GLOBAL), D_BDW, NULL,
-		power_well_ctl_mmio_write);
+	MMIO_DH(HSW_PWR_WELL_CTL1, D_BDW, NULL, power_well_ctl_mmio_write);
+	MMIO_DH(HSW_PWR_WELL_CTL2, D_BDW, NULL, power_well_ctl_mmio_write);
+	MMIO_DH(HSW_PWR_WELL_CTL3, D_BDW, NULL, power_well_ctl_mmio_write);
+	MMIO_DH(HSW_PWR_WELL_CTL4, D_BDW, NULL, power_well_ctl_mmio_write);
 	MMIO_DH(HSW_PWR_WELL_CTL5, D_BDW, NULL, power_well_ctl_mmio_write);
 	MMIO_DH(HSW_PWR_WELL_CTL6, D_BDW, NULL, power_well_ctl_mmio_write);
 
···
 	MMIO_F(_MMIO(_DPD_AUX_CH_CTL), 6 * 4, 0, 0, 0, D_SKL_PLUS, NULL,
 						dp_aux_ch_ctl_mmio_write);
 
-	/*
-	 * Use an arbitrary power well controlled by the PWR_WELL_CTL
-	 * register.
-	 */
-	MMIO_D(HSW_PWR_WELL_CTL_BIOS(SKL_DISP_PW_MISC_IO), D_SKL_PLUS);
-	MMIO_DH(HSW_PWR_WELL_CTL_DRIVER(SKL_DISP_PW_MISC_IO), D_SKL_PLUS, NULL,
-		skl_power_well_ctl_write);
+	MMIO_D(HSW_PWR_WELL_CTL1, D_SKL_PLUS);
+	MMIO_DH(HSW_PWR_WELL_CTL2, D_SKL_PLUS, NULL, skl_power_well_ctl_write);
 
 	MMIO_D(_MMIO(0xa210), D_SKL_PLUS);
 	MMIO_D(GEN9_MEDIA_PG_IDLE_HYSTERESIS, D_SKL_PLUS);
···
  * @offset: register offset
  * @pdata: data buffer
  * @bytes: data length
+ * @is_read: read or write
  *
  * Returns:
  * Zero on success, negative error code if failed.

drivers/gpu/drm/i915/gvt/kvmgt.c

···
 	return pfn;
 }
 
-int kvmgt_dma_map_guest_page(unsigned long handle, unsigned long gfn,
+static int kvmgt_dma_map_guest_page(unsigned long handle, unsigned long gfn,
 		unsigned long size, dma_addr_t *dma_addr)
 {
 	struct kvmgt_guest_info *info;
···
 	__gvt_cache_remove_entry(entry->vgpu, entry);
 }
 
-void kvmgt_dma_unmap_guest_page(unsigned long handle, dma_addr_t dma_addr)
+static void kvmgt_dma_unmap_guest_page(unsigned long handle, dma_addr_t dma_addr)
 {
 	struct kvmgt_guest_info *info;
 	struct gvt_dma *entry;

drivers/gpu/drm/i915/gvt/mmio.c

···
 /**
  * intel_vgpu_gpa_to_mmio_offset - translate a GPA to MMIO offset
  * @vgpu: a vGPU
+ * @gpa: guest physical address
  *
  * Returns:
  * Zero on success, negative error code if failed
···
 /**
  * intel_vgpu_reset_mmio - reset virtual MMIO space
  * @vgpu: a vGPU
- *
+ * @dmlr: whether this is device model level reset
  */
 void intel_vgpu_reset_mmio(struct intel_vgpu *vgpu, bool dmlr)
 {

drivers/gpu/drm/i915/gvt/mmio_context.c

···
 #include "gvt.h"
 #include "trace.h"
 
-/**
- * Defined in Intel Open Source PRM.
- * Ref: https://01.org/linuxgraphics/documentation/hardware-specification-prms
- */
-#define TRVATTL3PTRDW(i)	_MMIO(0x4de0 + (i)*4)
-#define TRNULLDETCT		_MMIO(0x4de8)
-#define TRINVTILEDETCT		_MMIO(0x4dec)
-#define TRVADR			_MMIO(0x4df0)
-#define TRTTE			_MMIO(0x4df4)
-#define RING_EXCC(base)		_MMIO((base) + 0x28)
-#define RING_GFX_MODE(base)	_MMIO((base) + 0x29c)
-#define VF_GUARDBAND		_MMIO(0x83a4)
-
 #define GEN9_MOCS_SIZE		64
 
 /* Raw offset is appened to each line for convenience. */

drivers/gpu/drm/i915/gvt/mmio_context.h

···
 
 int intel_vgpu_restore_inhibit_context(struct intel_vgpu *vgpu,
 				       struct i915_request *req);
+#define IS_RESTORE_INHIBIT(a)	\
+	(_MASKED_BIT_ENABLE(CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT) == \
+	((a) & _MASKED_BIT_ENABLE(CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT)))
 
 #endif

drivers/gpu/drm/i915/gvt/opregion.c

···
 /**
  * intel_vgpu_init_opregion - initialize the stuff used to emulate opregion
  * @vgpu: a vGPU
- * @gpa: guest physical address of opregion
  *
  * Returns:
  * Zero on success, negative error code if failed.

drivers/gpu/drm/i915/gvt/page_track.c

···
  * intel_vgpu_register_page_track - register a guest page to be tacked
  * @vgpu: a vGPU
  * @gfn: the gfn of guest page
+ * @handler: page track handler
+ * @priv: tracker private
  *
  * Returns:
  * zero on success, negative error code if failed.

drivers/gpu/drm/i915/gvt/reg.h

···
 #define _RING_CTL_BUF_SIZE(ctl) (((ctl) & RB_TAIL_SIZE_MASK) + \
 		I915_GTT_PAGE_SIZE)
 
+#define PCH_GPIO_BASE	_MMIO(0xc5010)
+
+#define PCH_GMBUS0	_MMIO(0xc5100)
+#define PCH_GMBUS1	_MMIO(0xc5104)
+#define PCH_GMBUS2	_MMIO(0xc5108)
+#define PCH_GMBUS3	_MMIO(0xc510c)
+#define PCH_GMBUS4	_MMIO(0xc5110)
+#define PCH_GMBUS5	_MMIO(0xc5120)
+
+#define TRVATTL3PTRDW(i)	_MMIO(0x4de0 + (i) * 4)
+#define TRNULLDETCT		_MMIO(0x4de8)
+#define TRINVTILEDETCT		_MMIO(0x4dec)
+#define TRVADR			_MMIO(0x4df0)
+#define TRTTE			_MMIO(0x4df4)
+#define RING_EXCC(base)		_MMIO((base) + 0x28)
+#define RING_GFX_MODE(base)	_MMIO((base) + 0x29c)
+#define VF_GUARDBAND		_MMIO(0x83a4)
+
 #endif

drivers/gpu/drm/i915/gvt/scheduler.c

···
 	unsigned long context_gpa, context_page_num;
 	int i;
 
-	gvt_dbg_sched("ring id %d workload lrca %x", ring_id,
-			workload->ctx_desc.lrca);
-
-	context_page_num = gvt->dev_priv->engine[ring_id]->context_size;
-
-	context_page_num = context_page_num >> PAGE_SHIFT;
-
-	if (IS_BROADWELL(gvt->dev_priv) && ring_id == RCS)
-		context_page_num = 19;
-
-	i = 2;
-
-	while (i < context_page_num) {
-		context_gpa = intel_vgpu_gma_to_gpa(vgpu->gtt.ggtt_mm,
-				(u32)((workload->ctx_desc.lrca + i) <<
-				I915_GTT_PAGE_SHIFT));
-		if (context_gpa == INTEL_GVT_INVALID_ADDR) {
-			gvt_vgpu_err("Invalid guest context descriptor\n");
-			return -EFAULT;
-		}
-
-		page = i915_gem_object_get_page(ctx_obj, LRC_HEADER_PAGES + i);
-		dst = kmap(page);
-		intel_gvt_hypervisor_read_gpa(vgpu, context_gpa, dst,
-				I915_GTT_PAGE_SIZE);
-		kunmap(page);
-		i++;
-	}
-
 	page = i915_gem_object_get_page(ctx_obj, LRC_STATE_PN);
 	shadow_ring_context = kmap(page);
 
···
 
 	sr_oa_regs(workload, (u32 *)shadow_ring_context, false);
 	kunmap(page);
+
+	if (IS_RESTORE_INHIBIT(shadow_ring_context->ctx_ctrl.val))
+		return 0;
+
+	gvt_dbg_sched("ring id %d workload lrca %x", ring_id,
+			workload->ctx_desc.lrca);
+
+	context_page_num = gvt->dev_priv->engine[ring_id]->context_size;
+
+	context_page_num = context_page_num >> PAGE_SHIFT;
+
+	if (IS_BROADWELL(gvt->dev_priv) && ring_id == RCS)
+		context_page_num = 19;
+
+	i = 2;
+	while (i < context_page_num) {
+		context_gpa = intel_vgpu_gma_to_gpa(vgpu->gtt.ggtt_mm,
+				(u32)((workload->ctx_desc.lrca + i) <<
+				I915_GTT_PAGE_SHIFT));
+		if (context_gpa == INTEL_GVT_INVALID_ADDR) {
+			gvt_vgpu_err("Invalid guest context descriptor\n");
+			return -EFAULT;
+		}
+
+		page = i915_gem_object_get_page(ctx_obj, LRC_HEADER_PAGES + i);
+		dst = kmap(page);
+		intel_gvt_hypervisor_read_gpa(vgpu, context_gpa, dst,
+				I915_GTT_PAGE_SIZE);
+		kunmap(page);
+		i++;
+	}
 	return 0;
 }
 
···
 /**
  * intel_vgpu_select_submission_ops - select virtual submission interface
  * @vgpu: a vGPU
+ * @engine_mask: either ALL_ENGINES or target engine mask
  * @interface: expected vGPU virtual submission interface
  *
  * This function is called when guest configures submission interface.
···
 
 /**
  * intel_vgpu_destroy_workload - destroy a vGPU workload
- * @vgpu: a vGPU
+ * @workload: workload to destroy
  *
  * This function is called when destroy a vGPU workload.
  *
···
 /**
  * intel_vgpu_create_workload - create a vGPU workload
  * @vgpu: a vGPU
+ * @ring_id: ring index
  * @desc: a guest context descriptor
  *
  * This function is called when creating a vGPU workload.

drivers/gpu/drm/i915/i915_debugfs.c

···
 		return ret;
 
 	list_for_each_entry(ctx, &dev_priv->contexts.list, link) {
-		seq_printf(m, "HW context %u ", ctx->hw_id);
+		seq_puts(m, "HW context ");
+		if (!list_empty(&ctx->hw_id_link))
+			seq_printf(m, "%x [pin %u]", ctx->hw_id,
+				   atomic_read(&ctx->hw_id_pin_count));
 		if (ctx->pid) {
 			struct task_struct *task;
 
···
 	intel_runtime_pm_get(dev_priv);
 
 	mutex_lock(&dev_priv->psr.lock);
-	seq_printf(m, "Enabled: %s\n", yesno((bool)dev_priv->psr.enabled));
+	seq_printf(m, "PSR mode: %s\n",
+		   dev_priv->psr.psr2_enabled ? "PSR2" : "PSR1");
+	seq_printf(m, "Enabled: %s\n", yesno(dev_priv->psr.enabled));
 	seq_printf(m, "Busy frontbuffer bits: 0x%03x\n",
 		   dev_priv->psr.busy_frontbuffer_bits);
 
···
 	psr_source_status(dev_priv, m);
 	mutex_unlock(&dev_priv->psr.lock);
 
-	if (READ_ONCE(dev_priv->psr.debug)) {
+	if (READ_ONCE(dev_priv->psr.debug) & I915_PSR_DEBUG_IRQ) {
 		seq_printf(m, "Last attempted entry at: %lld\n",
 			   dev_priv->psr.last_entry_attempt);
 		seq_printf(m, "Last exit at: %lld\n",
···
 i915_edp_psr_debug_set(void *data, u64 val)
 {
 	struct drm_i915_private *dev_priv = data;
+	struct drm_modeset_acquire_ctx ctx;
+	int ret;
 
 	if (!CAN_PSR(dev_priv))
 		return -ENODEV;
 
-	DRM_DEBUG_KMS("PSR debug %s\n", enableddisabled(val));
+	DRM_DEBUG_KMS("Setting PSR debug to %llx\n", val);
 
 	intel_runtime_pm_get(dev_priv);
-	intel_psr_irq_control(dev_priv, !!val);
+
+	drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
+
+retry:
+	ret = intel_psr_set_debugfs_mode(dev_priv, &ctx, val);
+	if (ret == -EDEADLK) {
+		ret = drm_modeset_backoff(&ctx);
+		if (!ret)
+			goto retry;
+	}
+
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
+
 	intel_runtime_pm_put(dev_priv);
 
-	return 0;
+	return ret;
 }
 
 static int
···
 		enum intel_display_power_domain power_domain;
 
 		power_well = &power_domains->power_wells[i];
-		seq_printf(m, "%-25s %d\n", power_well->name,
+		seq_printf(m, "%-25s %d\n", power_well->desc->name,
 			   power_well->count);
 
-		for_each_power_domain(power_domain, power_well->domains)
+		for_each_power_domain(power_domain, power_well->desc->domains)
 			seq_printf(m, "  %-23s %d\n",
 				 intel_display_power_domain_str(power_domain),
 				 power_domains->domain_use_count[power_domain]);
···
 #define DROP_FREED	BIT(4)
 #define DROP_SHRINK_ALL	BIT(5)
 #define DROP_IDLE	BIT(6)
+#define DROP_RESET_ACTIVE	BIT(7)
+#define DROP_RESET_SEQNO	BIT(8)
 #define DROP_ALL (DROP_UNBOUND	| \
 		  DROP_BOUND	| \
 		  DROP_RETIRE	| \
 		  DROP_ACTIVE	| \
 		  DROP_FREED	| \
 		  DROP_SHRINK_ALL |\
-		  DROP_IDLE)
+		  DROP_IDLE	| \
+		  DROP_RESET_ACTIVE | \
+		  DROP_RESET_SEQNO)
 static int
 i915_drop_caches_get(void *data, u64 *val)
 {
···
 static int
 i915_drop_caches_set(void *data, u64 val)
 {
-	struct drm_i915_private *dev_priv = data;
-	struct drm_device *dev = &dev_priv->drm;
+	struct drm_i915_private *i915 = data;
 	int ret = 0;
 
 	DRM_DEBUG("Dropping caches: 0x%08llx [0x%08llx]\n",
 		  val, val & DROP_ALL);
 
+	if (val & DROP_RESET_ACTIVE && !intel_engines_are_idle(i915))
+		i915_gem_set_wedged(i915);
+
 	/* No need to check and wait for gpu resets, only libdrm auto-restarts
 	 * on ioctls on -EAGAIN. */
-	if (val & (DROP_ACTIVE | DROP_RETIRE)) {
-		ret = mutex_lock_interruptible(&dev->struct_mutex);
+	if (val & (DROP_ACTIVE | DROP_RETIRE | DROP_RESET_SEQNO)) {
+		ret = mutex_lock_interruptible(&i915->drm.struct_mutex);
 		if (ret)
 			return ret;
 
 		if (val & DROP_ACTIVE)
-			ret = i915_gem_wait_for_idle(dev_priv,
+			ret = i915_gem_wait_for_idle(i915,
 						     I915_WAIT_INTERRUPTIBLE |
 						     I915_WAIT_LOCKED,
 						     MAX_SCHEDULE_TIMEOUT);
 
-		if (val & DROP_RETIRE)
-			i915_retire_requests(dev_priv);
+		if (val & DROP_RESET_SEQNO) {
+			intel_runtime_pm_get(i915);
+			ret = i915_gem_set_global_seqno(&i915->drm, 1);
+			intel_runtime_pm_put(i915);
+		}
 
-		mutex_unlock(&dev->struct_mutex);
+		if (val & DROP_RETIRE)
+			i915_retire_requests(i915);
+
+		mutex_unlock(&i915->drm.struct_mutex);
+	}
+
+	if (val & DROP_RESET_ACTIVE &&
+	    i915_terminally_wedged(&i915->gpu_error)) {
+		i915_handle_error(i915, ALL_ENGINES, 0, NULL);
+		wait_on_bit(&i915->gpu_error.flags,
+			    I915_RESET_HANDOFF,
+			    TASK_UNINTERRUPTIBLE);
 	}
 
 	fs_reclaim_acquire(GFP_KERNEL);
 	if (val & DROP_BOUND)
-		i915_gem_shrink(dev_priv, LONG_MAX, NULL, I915_SHRINK_BOUND);
+		i915_gem_shrink(i915, LONG_MAX, NULL, I915_SHRINK_BOUND);
 
 	if (val & DROP_UNBOUND)
-		i915_gem_shrink(dev_priv, LONG_MAX, NULL, I915_SHRINK_UNBOUND);
+		i915_gem_shrink(i915, LONG_MAX, NULL, I915_SHRINK_UNBOUND);
 
 	if (val & DROP_SHRINK_ALL)
-		i915_gem_shrink_all(dev_priv);
+		i915_gem_shrink_all(i915);
 	fs_reclaim_release(GFP_KERNEL);
 
 	if (val & DROP_IDLE) {
 		do {
-			if (READ_ONCE(dev_priv->gt.active_requests))
-				flush_delayed_work(&dev_priv->gt.retire_work);
-			drain_delayed_work(&dev_priv->gt.idle_work);
-		} while (READ_ONCE(dev_priv->gt.awake));
+			if (READ_ONCE(i915->gt.active_requests))
+				flush_delayed_work(&i915->gt.retire_work);
+			drain_delayed_work(&i915->gt.idle_work);
+		} while (READ_ONCE(i915->gt.awake));
 	}
 
 	if (val & DROP_FREED)
-		i915_gem_drain_freed_objects(dev_priv);
+		i915_gem_drain_freed_objects(i915);
 
 	return ret;
 }

drivers/gpu/drm/i915/i915_drv.c

···
 			value = 2;
 		break;
 	case I915_PARAM_HAS_RESOURCE_STREAMER:
-		value = HAS_RESOURCE_STREAMER(dev_priv);
+		value = 0;
 		break;
 	case I915_PARAM_HAS_POOLED_EU:
 		value = HAS_POOLED_EU(dev_priv);
···
 		break;
 	case I915_PARAM_CS_TIMESTAMP_FREQUENCY:
 		value = 1000 * INTEL_INFO(dev_priv)->cs_timestamp_frequency_khz;
+		break;
+	case I915_PARAM_MMAP_GTT_COHERENT:
+		value = INTEL_INFO(dev_priv)->has_coherent_ggtt;
 		break;
 	default:
 		DRM_DEBUG("Unknown parameter %d\n", param->param);
···
 	intel_teardown_gmbus(dev_priv);
 cleanup_csr:
 	intel_csr_ucode_fini(dev_priv);
-	intel_power_domains_fini(dev_priv);
+	intel_power_domains_fini_hw(dev_priv);
 	vga_switcheroo_unregister_client(pdev);
 cleanup_vga_client:
 	vga_client_register(pdev, NULL, NULL, NULL);
···
 /**
  * i915_driver_init_early - setup state not requiring device access
  * @dev_priv: device private
- * @ent: the matching pci_device_id
  *
  * Initialize everything that is a "SW-only" state, that is state not
  * requiring accessing the device or exposing the driver via kernel internal
···
  * system memory allocation, setting up device specific attributes and
  * function hooks not requiring accessing the device.
  */
-static int i915_driver_init_early(struct drm_i915_private *dev_priv,
-				  const struct pci_device_id *ent)
+static int i915_driver_init_early(struct drm_i915_private *dev_priv)
 {
-	const struct intel_device_info *match_info =
-		(struct intel_device_info *)ent->driver_data;
-	struct intel_device_info *device_info;
 	int ret = 0;
 
 	if (i915_inject_load_failure())
 		return -ENODEV;
 
-	/* Setup the write-once "constant" device info */
-	device_info = mkwrite_device_info(dev_priv);
-	memcpy(device_info, match_info, sizeof(*device_info));
-	device_info->device_id = dev_priv->drm.pdev->device;
-
-	BUILD_BUG_ON(INTEL_MAX_PLATFORMS >
-		     sizeof(device_info->platform_mask) * BITS_PER_BYTE);
-	BUG_ON(device_info->gen > sizeof(device_info->gen_mask) * BITS_PER_BYTE);
 	spin_lock_init(&dev_priv->irq_lock);
 	spin_lock_init(&dev_priv->gpu_error.lock);
 	mutex_init(&dev_priv->backlight_lock);
···
 	intel_uc_init_early(dev_priv);
 	intel_pm_setup(dev_priv);
 	intel_init_dpio(dev_priv);
-	intel_power_domains_init(dev_priv);
+	ret = intel_power_domains_init(dev_priv);
+	if (ret < 0)
+		goto err_uc;
 	intel_irq_init(dev_priv);
 	intel_hangcheck_init(dev_priv);
 	intel_init_display_hooks(dev_priv);
···
 
 	return 0;
 
+err_uc:
+	intel_uc_cleanup_early(dev_priv);
+	i915_gem_cleanup_early(dev_priv);
 err_workqueues:
 	i915_workqueues_cleanup(dev_priv);
 err_engines:
···
 static void i915_driver_cleanup_early(struct drm_i915_private *dev_priv)
 {
 	intel_irq_fini(dev_priv);
+	intel_power_domains_cleanup(dev_priv);
 	intel_uc_cleanup_early(dev_priv);
 	i915_gem_cleanup_early(dev_priv);
 	i915_workqueues_cleanup(dev_priv);
···
 	 */
 	if (INTEL_INFO(dev_priv)->num_pipes)
 		drm_kms_helper_poll_init(dev);
+
+	intel_power_domains_enable(dev_priv);
+	intel_runtime_pm_enable(dev_priv);
 }
 
 /**
···
  */
 static void i915_driver_unregister(struct drm_i915_private *dev_priv)
 {
+	intel_runtime_pm_disable(dev_priv);
+	intel_power_domains_disable(dev_priv);
+
 	intel_fbdev_unregister(dev_priv);
 	intel_audio_deinit(dev_priv);
 
···
 		DRM_INFO("DRM_I915_DEBUG enabled\n");
 	if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM))
 		DRM_INFO("DRM_I915_DEBUG_GEM enabled\n");
+	if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM))
+		DRM_INFO("DRM_I915_DEBUG_RUNTIME_PM enabled\n");
+}
+
+static struct drm_i915_private *
+i915_driver_create(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	const struct intel_device_info *match_info =
+		(struct intel_device_info *)ent->driver_data;
+	struct intel_device_info *device_info;
+	struct drm_i915_private *i915;
+
+	i915 = kzalloc(sizeof(*i915), GFP_KERNEL);
+	if (!i915)
+		return NULL;
+
+	if (drm_dev_init(&i915->drm, &driver, &pdev->dev)) {
+		kfree(i915);
+		return NULL;
+	}
+
+	i915->drm.pdev = pdev;
+	i915->drm.dev_private = i915;
+	pci_set_drvdata(pdev, &i915->drm);
+
+	/* Setup the write-once "constant" device info */
+	device_info = mkwrite_device_info(i915);
+	memcpy(device_info, match_info, sizeof(*device_info));
+	device_info->device_id = pdev->device;
+
+	BUILD_BUG_ON(INTEL_MAX_PLATFORMS >
+		     sizeof(device_info->platform_mask) * BITS_PER_BYTE);
+	BUG_ON(device_info->gen > sizeof(device_info->gen_mask) * BITS_PER_BYTE);
+
+	return i915;
+}
+
+static void i915_driver_destroy(struct drm_i915_private *i915)
+{
+	struct pci_dev *pdev = i915->drm.pdev;
+
+	drm_dev_fini(&i915->drm);
+	kfree(i915);
+
+	/* And make sure we never chase our dangling pointer from pci_dev */
+	pci_set_drvdata(pdev, NULL);
 }
 
 /**
···
 	if (!i915_modparams.nuclear_pageflip && match_info->gen < 5)
 		driver.driver_features &= ~DRIVER_ATOMIC;
 
-	ret = -ENOMEM;
-	dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
-	if (dev_priv)
-		ret = drm_dev_init(&dev_priv->drm, &driver, &pdev->dev);
-	if (ret) {
-		DRM_DEV_ERROR(&pdev->dev, "allocation failed\n");
-		goto out_free;
-	}
-
-	dev_priv->drm.pdev = pdev;
-	dev_priv->drm.dev_private = dev_priv;
+	dev_priv = i915_driver_create(pdev, ent);
+	if (!dev_priv)
+		return -ENOMEM;
 
 	ret = pci_enable_device(pdev);
 	if (ret)
 		goto out_fini;
 
-	pci_set_drvdata(pdev, &dev_priv->drm);
-	/*
-	 * Disable the system suspend direct complete optimization, which can
-	 * leave the device suspended skipping the driver's suspend handlers
-	 * if the device was already runtime suspended. This is needed due to
-	 * the difference in our runtime and system suspend sequence and
-	 * becaue the HDA driver may require us to enable the audio power
-	 * domain during system suspend.
-	 */
-	dev_pm_set_driver_flags(&pdev->dev, DPM_FLAG_NEVER_SKIP);
-
-	ret = i915_driver_init_early(dev_priv, ent);
+	ret = i915_driver_init_early(dev_priv);
 	if (ret < 0)
 		goto out_pci_disable;
 
-	intel_runtime_pm_get(dev_priv);
+	disable_rpm_wakeref_asserts(dev_priv);
 
 	ret = i915_driver_init_mmio(dev_priv);
 	if (ret < 0)
···
 
 	i915_driver_register(dev_priv);
 
-	intel_runtime_pm_enable(dev_priv);
-
 	intel_init_ipc(dev_priv);
 
-	intel_runtime_pm_put(dev_priv);
+	enable_rpm_wakeref_asserts(dev_priv);
 
 	i915_welcome_messages(dev_priv);
 
···
 out_cleanup_mmio:
 	i915_driver_cleanup_mmio(dev_priv);
 out_runtime_pm_put:
-	intel_runtime_pm_put(dev_priv);
+	enable_rpm_wakeref_asserts(dev_priv);
 	i915_driver_cleanup_early(dev_priv);
 out_pci_disable:
 	pci_disable_device(pdev);
 out_fini:
 	i915_load_error(dev_priv, "Device initialization failed (%d)\n", ret);
-	drm_dev_fini(&dev_priv->drm);
-out_free:
-	kfree(dev_priv);
-	pci_set_drvdata(pdev, NULL);
+	i915_driver_destroy(dev_priv);
 	return ret;
 }
 
···
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	struct pci_dev *pdev = dev_priv->drm.pdev;
 
+	disable_rpm_wakeref_asserts(dev_priv);
+
 	i915_driver_unregister(dev_priv);
 
 	if (i915_gem_suspend(dev_priv))
 		DRM_ERROR("failed to idle hardware; continuing to unload!\n");
-
-	intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
 
 	drm_atomic_helper_shutdown(dev);
 
···
 	i915_gem_fini(dev_priv);
 	intel_fbc_cleanup_cfb(dev_priv);
 
-	intel_power_domains_fini(dev_priv);
+	intel_power_domains_fini_hw(dev_priv);
 
 	i915_driver_cleanup_hw(dev_priv);
 	i915_driver_cleanup_mmio(dev_priv);
 
-	intel_display_power_put(dev_priv, POWER_DOMAIN_INIT);
+	enable_rpm_wakeref_asserts(dev_priv);
+
+	WARN_ON(atomic_read(&dev_priv->runtime_pm.wakeref_count));
 }
 
 static void i915_driver_release(struct drm_device *dev)
···
 	struct drm_i915_private *dev_priv = to_i915(dev);
 
 	i915_driver_cleanup_early(dev_priv);
-	drm_dev_fini(&dev_priv->drm);
-
-	kfree(dev_priv);
+	i915_driver_destroy(dev_priv);
 }
 
 static int i915_driver_open(struct drm_device *dev, struct drm_file *file)
···
 
 	/* We do a lot of poking in a lot of registers, make sure they work
 	 * properly. */
-	intel_display_set_init_power(dev_priv, true);
+	intel_power_domains_disable(dev_priv);
 
 	drm_kms_helper_poll_disable(dev);
 
···
 	return 0;
 }
 
+static enum i915_drm_suspend_mode
+get_suspend_mode(struct drm_i915_private *dev_priv, bool hibernate)
+{
+	if (hibernate)
+		return I915_DRM_SUSPEND_HIBERNATE;
+
+	if (suspend_to_idle(dev_priv))
+		return I915_DRM_SUSPEND_IDLE;
+
+	return I915_DRM_SUSPEND_MEM;
+}
+
 static int i915_drm_suspend_late(struct drm_device *dev, bool hibernation)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
···
 
 	i915_gem_suspend_late(dev_priv);
 
-	intel_display_set_init_power(dev_priv, false);
 	intel_uncore_suspend(dev_priv);
 
-	/*
-	 * In case of firmware assisted context save/restore don't manually
-	 * deinit the power domains. This also means the CSR/DMC firmware will
-	 * stay active, it will power down any HW resources as required and
-	 * also enable deeper system power states that would be blocked if the
-	 * firmware was inactive.
-	 */
-	if (IS_GEN9_LP(dev_priv) || hibernation || !suspend_to_idle(dev_priv) ||
-	    dev_priv->csr.dmc_payload == NULL) {
-		intel_power_domains_suspend(dev_priv);
-		dev_priv->power_domains_suspended = true;
-	}
+	intel_power_domains_suspend(dev_priv,
+				    get_suspend_mode(dev_priv, hibernation));
 
 	ret = 0;
 	if (IS_GEN9_LP(dev_priv))
···
 
 	if (ret) {
 		DRM_ERROR("Suspend complete failed: %d\n", ret);
-		if (dev_priv->power_domains_suspended) {
-			intel_power_domains_init_hw(dev_priv, true);
-			dev_priv->power_domains_suspended = false;
-		}
+		intel_power_domains_resume(dev_priv);
 
 		goto out;
 	}
···
 	/*
 	 * ... but also need to make sure that hotplug processing
 	 * doesn't cause havoc. Like in the driver load code we don't
-	 * bother with the tiny race here where we might loose hotplug
+	 * bother with the tiny race here where we might lose hotplug
 	 * notifications.
 	 * */
 	intel_hpd_init(dev_priv);
···
 	intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING, false);
 
 	intel_opregion_notify_adapter(dev_priv, PCI_D0);
+
+	intel_power_domains_enable(dev_priv);
 
 	enable_rpm_wakeref_asserts(dev_priv);
 
···
 	ret = pci_set_power_state(pdev, PCI_D0);
 	if (ret) {
 		DRM_ERROR("failed to set PCI D0 power state (%d)\n", ret);
-		goto out;
+		return ret;
 	}
 
 	/*
···
 	 * depend on the device enable refcount we can't anyway depend on them
 	 * disabling/enabling the device.
 	 */
-	if (pci_enable_device(pdev)) {
-		ret = -EIO;
-		goto out;
-	}
+	if (pci_enable_device(pdev))
+		return -EIO;
 
 	pci_set_master(pdev);
 
···
 
 	intel_uncore_sanitize(dev_priv);
 
-	if (dev_priv->power_domains_suspended)
-		intel_power_domains_init_hw(dev_priv, true);
-	else
-		intel_display_set_init_power(dev_priv, true);
+	intel_power_domains_resume(dev_priv);
 
 	intel_engines_sanitize(dev_priv);
 
 	enable_rpm_wakeref_asserts(dev_priv);
-
-out:
-	dev_priv->power_domains_suspended = false;
 
 	return ret;
 }
···
 		dev_notice(i915->drm.dev, "Resetting chip for %s\n", reason);
 	error->reset_count++;
 
-	disable_irq(i915->drm.irq);
 	ret = i915_gem_reset_prepare(i915);
 	if (ret) {
 		dev_err(i915->drm.dev, "GPU recovery failed\n");
···
 
 finish:
 	i915_gem_reset_finish(i915);
-	enable_irq(i915->drm.irq);
-
 wakeup:
 	clear_bit(I915_RESET_HANDOFF, &error->flags);
 	wake_up_bit(&error->flags, I915_RESET_HANDOFF);
···
 		goto out;
 
 out:
+	intel_engine_cancel_stop_cs(engine);
 	i915_gem_reset_finish_engine(engine);
 	return ret;
 }

drivers/gpu/drm/i915/i915_drv.h

···
 
 #define DRIVER_NAME		"i915"
 #define DRIVER_DESC		"Intel Graphics"
-#define DRIVER_DATE		"20180719"
-#define DRIVER_TIMESTAMP	1532015279
+#define DRIVER_DATE		"20180906"
+#define DRIVER_TIMESTAMP	1536242083
 
 /* Use I915_STATE_WARN(x) and I915_STATE_WARN_ON() (rather than WARN() and
  * WARN_ON()) for hw state sanity checks to check for unexpected conditions
···
 
 struct i915_psr {
 	struct mutex lock;
+
+#define I915_PSR_DEBUG_MODE_MASK	0x0f
+#define I915_PSR_DEBUG_DEFAULT		0x00
+#define I915_PSR_DEBUG_DISABLE		0x01
+#define I915_PSR_DEBUG_ENABLE		0x02
+#define I915_PSR_DEBUG_FORCE_PSR1	0x03
+#define I915_PSR_DEBUG_IRQ		0x10
+
+	u32 debug;
 	bool sink_support;
-	struct intel_dp *enabled;
+	bool prepared, enabled;
+	struct intel_dp *dp;
 	bool active;
 	struct work_struct work;
 	unsigned busy_frontbuffer_bits;
···
 	bool alpm;
 	bool psr2_enabled;
 	u8 sink_sync_latency;
-	bool debug;
 	ktime_t last_entry_attempt;
 	ktime_t last_exit;
 };
···
 			   struct i915_power_well *power_well);
 };
 
+struct i915_power_well_regs {
+	i915_reg_t bios;
+	i915_reg_t driver;
+	i915_reg_t kvmr;
+	i915_reg_t debug;
+};
+
 /* Power well structure for haswell */
-struct i915_power_well {
+struct i915_power_well_desc {
 	const char *name;
 	bool always_on;
-	/* power well enable/disable usage count */
-	int count;
-	/* cached hw enabled state */
-	bool hw_enabled;
 	u64 domains;
 	/* unique identifier for this power well */
 	enum i915_power_well_id id;
···
 	 */
 	union {
 		struct {
+			/*
+			 * request/status flag index in the PUNIT power well
+			 * control/status registers.
+			 */
+			u8 idx;
+		} vlv;
+		struct {
 			enum dpio_phy phy;
 		} bxt;
 		struct {
+			const struct i915_power_well_regs *regs;
+			/*
+			 * request/status flag index in the power well
+			 * constrol/status registers.
+			 */
+			u8 idx;
 			/* Mask of pipes whose IRQ logic is backed by the pw */
 			u8 irq_pipe_mask;
 			/* The pw is backing the VGA functionality */
···
 	const struct i915_power_well_ops *ops;
 };
 
+struct i915_power_well {
+	const struct i915_power_well_desc *desc;
+	/* power well enable/disable usage count */
+	int count;
+	/* cached hw enabled state */
+	bool hw_enabled;
+};
+
 struct i915_power_domains {
 	/*
 	 * Power wells needed for initialization at driver init and suspend
 	 * time are on. They are kept on until after the first modeset.
 	 */
-	bool init_power_on;
 	bool initializing;
+	bool display_core_suspended;
 	int power_well_count;
 
 	struct mutex lock;
···
 	struct mutex gmbus_mutex;
 
 	/**
-	 * Base address of the gmbus and gpio block.
+	 * Base address of where the gmbus and gpio blocks are located (either
+	 * on PCH or on SoC for platforms without PCH).
 	 */
 	uint32_t gpio_mmio_base;
 
···
 	struct intel_engine_cs *engine_class[MAX_ENGINE_CLASS + 1]
 					    [MAX_ENGINE_INSTANCE + 1];
 
-	struct drm_dma_handle *status_page_dmah;
 	struct resource mch_res;
 
 	/* protects the irq masks */
···
 	struct mutex av_mutex;
 
 	struct {
+		struct mutex mutex;
 		struct list_head list;
 		struct llist_head free_list;
 		struct work_struct free_work;
···
 #define MAX_CONTEXT_HW_ID (1<<21) /* exclusive */
 #define MAX_GUC_CONTEXT_HW_ID (1 << 20) /* exclusive */
 #define GEN11_MAX_CONTEXT_HW_ID (1<<11) /* exclusive */
+		struct list_head hw_id_list;
 	} contexts;
 
 	u32 fdi_rx_config;
···
 #define USES_GUC_SUBMISSION(dev_priv)	intel_uc_is_using_guc_submission()
 #define USES_HUC(dev_priv)		intel_uc_is_using_huc()
 
-#define HAS_RESOURCE_STREAMER(dev_priv) ((dev_priv)->info.has_resource_streamer)
-
 #define HAS_POOLED_EU(dev_priv)	((dev_priv)->info.has_pooled_eu)
 
 #define INTEL_PCH_DEVICE_ID_MASK		0xff80
···
 extern void intel_irq_fini(struct drm_i915_private *dev_priv);
 int intel_irq_install(struct drm_i915_private *dev_priv);
 void intel_irq_uninstall(struct drm_i915_private *dev_priv);
+
+void i915_clear_error_registers(struct drm_i915_private *dev_priv);
 
 static inline bool intel_gvt_active(struct drm_i915_private *dev_priv)
 {

drivers/gpu/drm/i915/i915_gem.c

···
 	 * that was!).
 	 */
 
+	wmb();
+
+	if (INTEL_INFO(dev_priv)->has_coherent_ggtt)
+		return;
+
 	i915_gem_chipset_flush(dev_priv);
 
 	intel_runtime_pm_get(dev_priv);
···
 	return 0;
 }
 
-static unsigned int tile_row_pages(struct drm_i915_gem_object *obj)
+static unsigned int tile_row_pages(const struct drm_i915_gem_object *obj)
 {
 	return i915_gem_object_get_tile_row_size(obj) >> PAGE_SHIFT;
 }
···
 }
 
 static inline struct i915_ggtt_view
-compute_partial_view(struct drm_i915_gem_object *obj,
+compute_partial_view(const struct drm_i915_gem_object *obj,
 		     pgoff_t page_offset,
 		     unsigned int chunk)
 {
···
 	struct drm_device *dev = obj->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	struct i915_ggtt *ggtt = &dev_priv->ggtt;
-	bool write = !!(vmf->flags & FAULT_FLAG_WRITE);
+	bool write = area->vm_flags & VM_WRITE;
 	struct i915_vma *vma;
 	pgoff_t page_offset;
 	int ret;
···
 	gfp_t noreclaim;
 	int ret;
 
-	/* Assert that the object is not currently in any GPU domain. As it
+	/*
+	 * Assert that the object is not currently in any GPU domain. As it
 	 * wasn't in the GTT, there shouldn't be any way it could have been in
 	 * a GPU cache
 	 */
 	GEM_BUG_ON(obj->read_domains & I915_GEM_GPU_DOMAINS);
 	GEM_BUG_ON(obj->write_domain & I915_GEM_GPU_DOMAINS);
+
+	/*
+	 * If there's no chance of allocating enough pages for the whole
+	 * object, bail early.
+	 */
+	if (page_count > totalram_pages)
+		return -ENOMEM;
 
 	st = kmalloc(sizeof(*st), GFP_KERNEL);
 	if (st == NULL)
···
 		return -ENOMEM;
 	}
 
-	/* Get the list of pages out of our struct file.  They'll be pinned
+	/*
+	 * Get the list of pages out of our struct file.  They'll be pinned
 	 * at this point until we release them.
 	 *
 	 * Fail silently without starting the shrinker
···
 			i915_gem_shrink(dev_priv, 2 * page_count, NULL, *s++);
 			cond_resched();
 
-			/* We've tried hard to allocate the memory by reaping
+			/*
+			 * We've tried hard to allocate the memory by reaping
 			 * our own buffer, now let the real VM do its job and
 			 * go down in flames if truly OOM.
 			 *
···
 				/* reclaim and warn, but no oom */
 				gfp = mapping_gfp_mask(mapping);
 
-				/* Our bo are always dirty and so we require
+				/*
+				 * Our bo are always dirty and so we require
 				 * kswapd to reclaim our pages (direct reclaim
 				 * does not effectively begin pageout of our
 				 * buffers on its own). However, direct reclaim
···
 
 	ret = i915_gem_gtt_prepare_pages(obj, st);
 	if (ret) {
-		/* DMA remapping failed? One possible cause is that
+		/*
+		 * DMA remapping failed? One possible cause is that
 		 * it could not reserve enough large entries, asking
 		 * for PAGE_SIZE chunks instead may be helpful.
 		 */
···
 	sg_free_table(st);
 	kfree(st);
 
-	/* shmemfs first checks if there is enough memory to allocate the page
+	/*
+	 * shmemfs first checks if there is enough memory to allocate the page
 	 * and reports ENOSPC should there be insufficient, along with the usual
 	 * ENOMEM for a genuine allocation failure.
 	 *
···
 			intel_engine_dump(engine, &p, "%s\n", engine->name);
 	}
 
-	set_bit(I915_WEDGED, &i915->gpu_error.flags);
-	smp_mb__after_atomic();
+	if (test_and_set_bit(I915_WEDGED, &i915->gpu_error.flags))
+		goto out;
 
 	/*
 	 * First, stop submission to hw, but do not yet complete requests by
···
 	i915->caps.scheduler = 0;
 
 	/* Even if the GPU reset fails, it should still stop the engines */
-	intel_gpu_reset(i915, ALL_ENGINES);
+	if (INTEL_GEN(i915) >= 5)
+		intel_gpu_reset(i915, ALL_ENGINES);
 
 	/*
 	 * Make sure no one is running the old callback before we proceed with
···
 		i915_gem_reset_finish_engine(engine);
 	}
 
+out:
 	GEM_TRACE("end\n");
 
 	wake_up_all(&i915->gpu_error.reset_queue);
···
 			timeout = wait_for_timeline(tl, flags, timeout);
 			if (timeout < 0)
 				return timeout;
+		}
+		if (GEM_SHOW_DEBUG() && !timeout) {
+			/* Presume that timeout was non-zero to begin with! */
+			dev_warn(&i915->drm.pdev->dev,
+				 "Missed idle-completion interrupt!\n");
+			GEM_TRACE_DUMP();
 		}
 
 		err = wait_for_engines(i915);
···
 		i915_gem_cleanup_userptr(dev_priv);
 
 	if (ret == -EIO) {
+		mutex_lock(&dev_priv->drm.struct_mutex);
+
 		/*
 		 * Allow engine initialisation to fail by marking the GPU as
 		 * wedged. But we only want to do this where the GPU is angry,
···
 					"Failed to initialize GPU, declaring it wedged!\n");
 			i915_gem_set_wedged(dev_priv);
 		}
-		ret = 0;
+
+		/* Minimal basic recovery for KMS */
+		ret = i915_ggtt_enable_hw(dev_priv);
+		i915_gem_restore_gtt_mappings(dev_priv);
+		i915_gem_restore_fences(dev_priv);
+		intel_init_clock_gating(dev_priv);
+
+		mutex_unlock(&dev_priv->drm.struct_mutex);
 	}
 
 	i915_gem_drain_freed_objects(dev_priv);
···
 void i915_gem_fini(struct drm_i915_private *dev_priv)
 {
 	i915_gem_suspend_late(dev_priv);
+	intel_disable_gt_powersave(dev_priv);
 
 	/* Flush any outstanding unpin_work. */
 	i915_gem_drain_workqueue(dev_priv);
···
 	i915_gem_cleanup_engines(dev_priv);
 	i915_gem_contexts_fini(dev_priv);
 	mutex_unlock(&dev_priv->drm.struct_mutex);
+
+	intel_cleanup_gt_powersave(dev_priv);
 
 	intel_uc_fini_misc(dev_priv);
 	i915_gem_cleanup_userptr(dev_priv);
···
 #include "selftests/huge_pages.c"
 #include "selftests/i915_gem_object.c"
 #include "selftests/i915_gem_coherency.c"
+#include "selftests/i915_gem.c"
 #endif

drivers/gpu/drm/i915/i915_gem.h

···
 		tasklet_unlock_wait(t);
 }
 
-static inline void __tasklet_enable_sync_once(struct tasklet_struct *t)
-{
-	if (atomic_dec_return(&t->count) == 0)
-		tasklet_kill(t);
-}
-
 static inline bool __tasklet_is_enabled(const struct tasklet_struct *t)
 {
 	return !atomic_read(&t->count);

drivers/gpu/drm/i915/i915_gem_context.c

···
 	rcu_read_unlock();
 }
 
+static inline int new_hw_id(struct drm_i915_private *i915, gfp_t gfp)
+{
+	unsigned int max;
+
+	lockdep_assert_held(&i915->contexts.mutex);
+
+	if (INTEL_GEN(i915) >= 11)
+		max = GEN11_MAX_CONTEXT_HW_ID;
+	else if (USES_GUC_SUBMISSION(i915))
+		/*
+		 * When using GuC in proxy submission, GuC consumes the
+		 * highest bit in the context id to indicate proxy submission.
+		 */
+		max = MAX_GUC_CONTEXT_HW_ID;
+	else
+		max = MAX_CONTEXT_HW_ID;
+
+	return ida_simple_get(&i915->contexts.hw_ida, 0, max, gfp);
+}
+
+static int steal_hw_id(struct drm_i915_private *i915)
+{
+	struct i915_gem_context *ctx, *cn;
+	LIST_HEAD(pinned);
+	int id = -ENOSPC;
+
+	lockdep_assert_held(&i915->contexts.mutex);
+
+	list_for_each_entry_safe(ctx, cn,
+				 &i915->contexts.hw_id_list, hw_id_link) {
+		if (atomic_read(&ctx->hw_id_pin_count)) {
+			list_move_tail(&ctx->hw_id_link, &pinned);
+			continue;
+		}
+
+		GEM_BUG_ON(!ctx->hw_id); /* perma-pinned kernel context */
+		list_del_init(&ctx->hw_id_link);
+		id = ctx->hw_id;
+		break;
+	}
+
+	/*
+	 * Remember how far we got up on the last repossesion scan, so the
+	 * list is kept in a "least recently scanned" order.
+	 */
+	list_splice_tail(&pinned, &i915->contexts.hw_id_list);
+	return id;
+}
+
+static int assign_hw_id(struct drm_i915_private *i915, unsigned int *out)
+{
+	int ret;
+
+	lockdep_assert_held(&i915->contexts.mutex);
+
+	/*
+	 * We prefer to steal/stall ourselves and our users over that of the
+	 * entire system. That may be a little unfair to our users, and
+	 * even hurt high priority clients. The choice is whether to oomkill
+	 * something else, or steal a context id.
+	 */
+	ret = new_hw_id(i915, GFP_KERNEL | __GFP_RETRY_MAYFAIL | __GFP_NOWARN);
+	if (unlikely(ret < 0)) {
+		ret = steal_hw_id(i915);
+		if (ret < 0) /* once again for the correct errno code */
+			ret = new_hw_id(i915, GFP_KERNEL);
+		if (ret < 0)
+			return ret;
+	}
+
+	*out = ret;
+	return 0;
+}
+
+static void release_hw_id(struct i915_gem_context *ctx)
+{
+	struct drm_i915_private *i915 = ctx->i915;
+
+	if (list_empty(&ctx->hw_id_link))
+		return;
+
+	mutex_lock(&i915->contexts.mutex);
+	if (!list_empty(&ctx->hw_id_link)) {
+		ida_simple_remove(&i915->contexts.hw_ida, ctx->hw_id);
+		list_del_init(&ctx->hw_id_link);
+	}
+	mutex_unlock(&i915->contexts.mutex);
+}
+
 static void i915_gem_context_free(struct i915_gem_context *ctx)
 {
 	unsigned int n;
···
 	lockdep_assert_held(&ctx->i915->drm.struct_mutex);
 	GEM_BUG_ON(!i915_gem_context_is_closed(ctx));
 
+	release_hw_id(ctx);
 	i915_ppgtt_put(ctx->ppgtt);
 
 	for (n = 0; n < ARRAY_SIZE(ctx->__engine); n++) {
···
 
 	list_del(&ctx->link);
 
-	ida_simple_remove(&ctx->i915->contexts.hw_ida, ctx->hw_id);
 	kfree_rcu(ctx, rcu);
 }
 
···
 	i915_gem_context_set_closed(ctx);
 
 	/*
+	 * This context will never again be assinged to HW, so we can
+	 * reuse its ID for the next context.
+	 */
+	release_hw_id(ctx);
+
+	/*
 	 * The LUT uses the VMA as a backpointer to unref the object,
 	 * so we need to clear the LUT before we close all the VMA (inside
 	 * the ppgtt).
···
 
 	ctx->file_priv = ERR_PTR(-EBADF);
 	i915_gem_context_put(ctx);
-}
-
-static int assign_hw_id(struct drm_i915_private *dev_priv, unsigned *out)
-{
-	int ret;
-	unsigned int max;
-
-	if (INTEL_GEN(dev_priv) >= 11) {
-		max = GEN11_MAX_CONTEXT_HW_ID;
-	} else {
-		/*
-		 * When using GuC in proxy submission, GuC consumes the
-		 * highest bit in the context id to indicate proxy submission.
-		 */
-		if (USES_GUC_SUBMISSION(dev_priv))
-			max = MAX_GUC_CONTEXT_HW_ID;
-		else
-			max = MAX_CONTEXT_HW_ID;
-	}
-
-
-	ret = ida_simple_get(&dev_priv->contexts.hw_ida,
-			     0, max, GFP_KERNEL);
-	if (ret < 0) {
-		/* Contexts are only released when no longer active.
-		 * Flush any pending retires to hopefully release some
-		 * stale contexts and try again.
-		 */
-		i915_retire_requests(dev_priv);
-		ret = ida_simple_get(&dev_priv->contexts.hw_ida,
-				     0, max, GFP_KERNEL);
-		if (ret < 0)
-			return ret;
-	}
-
-	*out = ret;
-	return 0;
 }
 
 static u32 default_desc_template(const struct drm_i915_private *i915,
···
 	if (ctx == NULL)
 		return ERR_PTR(-ENOMEM);
 
-	ret = assign_hw_id(dev_priv, &ctx->hw_id);
-	if (ret) {
-		kfree(ctx);
-		return ERR_PTR(ret);
-	}
-
 	kref_init(&ctx->ref);
 	list_add_tail(&ctx->link, &dev_priv->contexts.list);
 	ctx->i915 = dev_priv;
···
 
 	INIT_RADIX_TREE(&ctx->handles_vma, GFP_KERNEL);
 	INIT_LIST_HEAD(&ctx->handles_list);
+	INIT_LIST_HEAD(&ctx->hw_id_link);
 
 	/* Default context will never have a file_priv */
 	ret = DEFAULT_CONTEXT_HANDLE;
···
 	ctx->ring_size = 4 * PAGE_SIZE;
 	ctx->desc_template =
 		default_desc_template(dev_priv, dev_priv->mm.aliasing_ppgtt);
-
-	/*
-	 * GuC requires the ring to be placed in Non-WOPCM memory. If GuC is not
-	 * present or not in use we still need a small bias as ring wraparound
-	 * at offset 0 sometimes hangs. No idea why.
-	 */
-	if (USES_GUC(dev_priv))
-		ctx->ggtt_offset_bias = dev_priv->guc.ggtt_pin_bias;
-	else
-		ctx->ggtt_offset_bias = I915_GTT_PAGE_SIZE;
 
 	return ctx;
 
···
 	return ctx;
 }
 
-struct i915_gem_context *
-i915_gem_context_create_kernel(struct drm_i915_private *i915, int prio)
-{
-	struct i915_gem_context *ctx;
-
-	ctx = i915_gem_create_context(i915, NULL);
-	if (IS_ERR(ctx))
-		return ctx;
-
-	i915_gem_context_clear_bannable(ctx);
-	ctx->sched.priority = prio;
-	ctx->ring_size = PAGE_SIZE;
-
-	GEM_BUG_ON(!i915_gem_context_is_kernel(ctx));
-
-	return ctx;
-}
-
 static void
 destroy_kernel_context(struct i915_gem_context **ctxp)
 {
···
 
 	context_close(ctx);
 	i915_gem_context_free(ctx);
+}
+
+struct i915_gem_context *
+i915_gem_context_create_kernel(struct drm_i915_private *i915, int prio)
+{
+	struct i915_gem_context *ctx;
+	int err;
+
+	ctx = i915_gem_create_context(i915, NULL);
+	if (IS_ERR(ctx))
+		return ctx;
+
+	err = i915_gem_context_pin_hw_id(ctx);
+	if (err) {
+		destroy_kernel_context(&ctx);
+		return ERR_PTR(err);
+	}
+
+	i915_gem_context_clear_bannable(ctx);
+	ctx->sched.priority = prio;
+	ctx->ring_size = PAGE_SIZE;
+
+	GEM_BUG_ON(!i915_gem_context_is_kernel(ctx));
+
+	return ctx;
+}
+
+static void init_contexts(struct drm_i915_private *i915)
+{
+	mutex_init(&i915->contexts.mutex);
+	INIT_LIST_HEAD(&i915->contexts.list);
+
+	/* Using the simple ida interface, the max is limited by sizeof(int) */
+	BUILD_BUG_ON(MAX_CONTEXT_HW_ID > INT_MAX);
+	BUILD_BUG_ON(GEN11_MAX_CONTEXT_HW_ID > INT_MAX);
+	ida_init(&i915->contexts.hw_ida);
+	INIT_LIST_HEAD(&i915->contexts.hw_id_list);
+
+	INIT_WORK(&i915->contexts.free_work, contexts_free_worker);
+	init_llist_head(&i915->contexts.free_list);
 }
 
 static bool needs_preempt_context(struct drm_i915_private *i915)
···
 	if (ret)
 		return ret;
 
-	INIT_LIST_HEAD(&dev_priv->contexts.list);
-	INIT_WORK(&dev_priv->contexts.free_work, contexts_free_worker);
-	init_llist_head(&dev_priv->contexts.free_list);
-
-	/* Using the simple ida interface, the max is limited by sizeof(int) */
-	BUILD_BUG_ON(MAX_CONTEXT_HW_ID > INT_MAX);
-	BUILD_BUG_ON(GEN11_MAX_CONTEXT_HW_ID > INT_MAX);
-	ida_init(&dev_priv->contexts.hw_ida);
+	init_contexts(dev_priv);
 
 	/* lowest priority; idle task */
 	ctx = i915_gem_context_create_kernel(dev_priv, I915_PRIORITY_MIN);
···
 	}
 	/*
 	 * For easy recognisablity, we want the kernel context to be 0 and then
-	 * all user contexts will have non-zero hw_id.
+	 * all user contexts will have non-zero hw_id. Kernel contexts are
+	 * permanently pinned, so that we never suffer a stall and can
+	 * use them from any allocation context (e.g. for evicting other
+	 * contexts and from inside the shrinker).
 	 */
 	GEM_BUG_ON(ctx->hw_id);
+	GEM_BUG_ON(!atomic_read(&ctx->hw_id_pin_count));
 	dev_priv->kernel_context = ctx;
 
 	/* highest priority; preempting task */
···
 	destroy_kernel_context(&i915->kernel_context);
 
 	/* Must free all deferred contexts (via flush_workqueue) first */
+	GEM_BUG_ON(!list_empty(&i915->contexts.hw_id_list));
 	ida_destroy(&i915->contexts.hw_ida);
 }
 
···
 out:
 	rcu_read_unlock();
 	return ret;
+}
+
+int __i915_gem_context_pin_hw_id(struct i915_gem_context *ctx)
+{
+	struct drm_i915_private *i915 = ctx->i915;
+	int err = 0;
+
+	mutex_lock(&i915->contexts.mutex);
+
+	GEM_BUG_ON(i915_gem_context_is_closed(ctx));
+
+	if (list_empty(&ctx->hw_id_link)) {
+		GEM_BUG_ON(atomic_read(&ctx->hw_id_pin_count));
+
+		err = assign_hw_id(i915, &ctx->hw_id);
+		if (err)
+			goto out_unlock;
+
+		list_add_tail(&ctx->hw_id_link, &i915->contexts.hw_id_list);
+	}
+
+	GEM_BUG_ON(atomic_read(&ctx->hw_id_pin_count) == ~0u);
+	atomic_inc(&ctx->hw_id_pin_count);
+
+out_unlock:
+	mutex_unlock(&i915->contexts.mutex);
+	return err;
 }
 
 #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)

drivers/gpu/drm/i915/i915_gem_context.h

···
 	 * functions like fault reporting, PASID, scheduling. The
 	 * &drm_i915_private.context_hw_ida is used to assign a unqiue
 	 * id for the lifetime of the context.
+	 *
+	 * @hw_id_pin_count: - number of times this context had been pinned
+	 * for use (should be, at most, once per engine).
+	 *
+	 * @hw_id_link: - all contexts with an assigned id are tracked
+	 * for possible repossession.
 	 */
 	unsigned int hw_id;
+	atomic_t hw_id_pin_count;
+	struct list_head hw_id_link;
 
 	/**
 	 * @user_handle: userspace identifier
···
 	u32 user_handle;
 
 	struct i915_sched_attr sched;
-
-	/** ggtt_offset_bias: placement restriction for context objects */
-	u32 ggtt_offset_bias;
 
 	/** engine: per-engine logical HW state */
 	struct intel_context {
···
 static inline void i915_gem_context_set_force_single_submission(struct i915_gem_context *ctx)
 {
 	__set_bit(CONTEXT_FORCE_SINGLE_SUBMISSION, &ctx->flags);
+}
+
+int __i915_gem_context_pin_hw_id(struct i915_gem_context *ctx);
+static inline int i915_gem_context_pin_hw_id(struct i915_gem_context *ctx)
+{
+	if (atomic_inc_not_zero(&ctx->hw_id_pin_count))
+		return 0;
+
+	return __i915_gem_context_pin_hw_id(ctx);
+}
+
+static inline void i915_gem_context_unpin_hw_id(struct i915_gem_context *ctx)
+{
+	GEM_BUG_ON(atomic_read(&ctx->hw_id_pin_count) == 0u);
+	atomic_dec(&ctx->hw_id_pin_count);
 }
 
 static inline bool i915_gem_context_is_default(const struct i915_gem_context *c)

drivers/gpu/drm/i915/i915_gem_execbuffer.c

···
 #define BATCH_OFFSET_BIAS (256*1024)
 
 #define __I915_EXEC_ILLEGAL_FLAGS \
-	(__I915_EXEC_UNKNOWN_FLAGS | I915_EXEC_CONSTANTS_MASK)
+	(__I915_EXEC_UNKNOWN_FLAGS | \
+	 I915_EXEC_CONSTANTS_MASK  | \
+	 I915_EXEC_RESOURCE_STREAMER)
 
 /* Catch emission of unexpected errors for CI! */
 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM)
···
 		return -ENOENT;
 
 	eb->ctx = ctx;
-	eb->vm = ctx->ppgtt ? &ctx->ppgtt->vm : &eb->i915->ggtt.vm;
+	if (ctx->ppgtt) {
+		eb->vm = &ctx->ppgtt->vm;
+		eb->invalid_flags |= EXEC_OBJECT_NEEDS_GTT;
+	} else {
+		eb->vm = &eb->i915->ggtt.vm;
+	}
 
 	eb->context_flags = 0;
 	if (ctx->flags & CONTEXT_NO_ZEROMAP)
···
 	u32 *cmd;
 	int err;
 
+	if (DBG_FORCE_RELOC == FORCE_GPU_RELOC) {
+		obj = vma->obj;
+		if (obj->cache_dirty & ~obj->cache_coherent)
+			i915_gem_clflush_object(obj, 0);
+		obj->write_domain = 0;
+	}
+
 	GEM_BUG_ON(vma->obj->write_domain & I915_GEM_DOMAIN_CPU);
 
 	obj = i915_gem_batch_pool_get(&eb->engine->batch_pool, PAGE_SIZE);
···
 				 * can read from this userspace address.
 				 */
 				offset = gen8_canonical_addr(offset & ~UPDATE);
-				__put_user(offset,
-					   &urelocs[r-stack].presumed_offset);
+				if (unlikely(__put_user(offset, &urelocs[r-stack].presumed_offset))) {
+					remain = -EFAULT;
+					goto out;
+				}
 			}
 		} while (r++, --count);
 		urelocs += ARRAY_SIZE(stack);
···
 
 		relocs = kvmalloc_array(size, 1, GFP_KERNEL);
 		if (!relocs) {
-			kvfree(relocs);
 			err = -ENOMEM;
 			goto err;
 		}
···
 			if (__copy_from_user((char *)relocs + copied,
 					     (char __user *)urelocs + copied,
 					     len)) {
+end_user:
 				kvfree(relocs);
 				err = -EFAULT;
 				goto err;
···
 			unsafe_put_user(-1,
 					&urelocs[copied].presumed_offset,
 					end_user);
-end_user:
 		user_access_end();
 
 		eb->exec[i].relocs_ptr = (uintptr_t)relocs;
···
 	eb.flags = (unsigned int *)(eb.vma + args->buffer_count + 1);
 
 	eb.invalid_flags = __EXEC_OBJECT_UNKNOWN_FLAGS;
-	if (USES_FULL_PPGTT(eb.i915))
-		eb.invalid_flags |= EXEC_OBJECT_NEEDS_GTT;
 	reloc_cache_init(&eb.reloc_cache, eb.i915);
 
 	eb.buffer_count = args->buffer_count;
···
 	eb.engine = eb_select_engine(eb.i915, file, args);
 	if (!eb.engine)
 		return -EINVAL;
-
-	if (args->flags & I915_EXEC_RESOURCE_STREAMER) {
-		if (!HAS_RESOURCE_STREAMER(eb.i915)) {
-			DRM_DEBUG("RS is only allowed for Haswell, Gen8 and above\n");
-			return -EINVAL;
-		}
-		if (eb.engine->id != RCS) {
-			DRM_DEBUG("RS is not available on %s\n",
-				 eb.engine->name);
-			return -EINVAL;
-		}
-
-		eb.batch_flags |= I915_DISPATCH_RS;
-	}
 
 	if (args->flags & I915_EXEC_FENCE_IN) {
 		in_fence = sync_file_get_fence(lower_32_bits(args->rsvd2));

drivers/gpu/drm/i915/i915_gem_gtt.c

···
 		return 0;
 	}
 
-	/* Early VLV doesn't have this */
-	if (IS_VALLEYVIEW(dev_priv) && dev_priv->drm.pdev->revision < 0xb) {
-		DRM_DEBUG_DRIVER("disabling PPGTT on pre-B3 step VLV\n");
-		return 0;
-	}
+	if (has_full_48bit_ppgtt)
+		return 3;
 
-	if (HAS_LOGICAL_RING_CONTEXTS(dev_priv)) {
-		if (has_full_48bit_ppgtt)
-			return 3;
-
-		if (has_full_ppgtt)
-			return 2;
-	}
+	if (has_full_ppgtt)
+		return 2;
 
 	return 1;
 }
···
 				  struct i915_page_directory *pd)
 {
 	int i;
-
-	if (!px_page(pd))
-		return;
 
 	for (i = 0; i < I915_PDES; i++) {
 		if (pd->page_table[i] != vm->scratch_pt)
···
 	return IS_GEN5(dev_priv) && IS_MOBILE(dev_priv) && intel_vtd_active();
 }
 
-static void gen6_check_and_clear_faults(struct drm_i915_private *dev_priv)
+static void gen6_check_faults(struct drm_i915_private *dev_priv)
 {
 	struct intel_engine_cs *engine;
 	enum intel_engine_id id;
···
 					 fault & RING_FAULT_GTTSEL_MASK ? "GGTT" : "PPGTT",
 					 RING_FAULT_SRCID(fault),
 					 RING_FAULT_FAULT_TYPE(fault));
-			I915_WRITE(RING_FAULT_REG(engine),
-				   fault & ~RING_FAULT_VALID);
 		}
 	}
-
-	POSTING_READ(RING_FAULT_REG(dev_priv->engine[RCS]));
 }
 
-static void gen8_check_and_clear_faults(struct drm_i915_private *dev_priv)
+static void gen8_check_faults(struct drm_i915_private *dev_priv)
 {
 	u32 fault = I915_READ(GEN8_RING_FAULT_REG);
 
···
 				 GEN8_RING_FAULT_ENGINE_ID(fault),
 				 RING_FAULT_SRCID(fault),
 				 RING_FAULT_FAULT_TYPE(fault));
-		I915_WRITE(GEN8_RING_FAULT_REG,
-			   fault & ~RING_FAULT_VALID);
 	}
-
-	POSTING_READ(GEN8_RING_FAULT_REG);
 }
 
 void i915_check_and_clear_faults(struct drm_i915_private *dev_priv)
 {
 	/* From GEN8 onwards we only have one 'All Engine Fault Register' */
 	if (INTEL_GEN(dev_priv) >= 8)
-		gen8_check_and_clear_faults(dev_priv);
+		gen8_check_faults(dev_priv);
 	else if (INTEL_GEN(dev_priv) >= 6)
-		gen6_check_and_clear_faults(dev_priv);
+		gen6_check_faults(dev_priv);
 	else
 		return;
+
+	i915_clear_error_registers(dev_priv);
 }
 
 void i915_gem_suspend_gtt_mappings(struct drm_i915_private *dev_priv)
···
 	unsigned long hole_start, hole_end;
 	struct drm_mm_node *entry;
 	int ret;
+
+	/*
+	 * GuC requires all resources that we're sharing with it to be placed in
+	 * non-WOPCM memory. If GuC is not present or not in use we still need a
+	 * small bias as ring wraparound at offset 0 sometimes hangs. No idea
+	 * why.
+	 */
+	ggtt->pin_bias = max_t(u32, I915_GTT_PAGE_SIZE,
+			       intel_guc_reserved_gtt_size(&dev_priv->guc));
 
 	ret = intel_vgt_balloon(dev_priv);
 	if (ret)
···
 	mutex_lock(&dev_priv->drm.struct_mutex);
 	i915_address_space_init(&ggtt->vm, dev_priv);
 
+	ggtt->vm.is_ggtt = true;
+
 	/* Only VLV supports read-only GGTT mappings */
 	ggtt->vm.has_read_only = IS_VALLEYVIEW(dev_priv);
 
···
 
 void i915_ggtt_disable_guc(struct drm_i915_private *i915)
 {
+	/* XXX Temporary pardon for error unload */
+	if (i915->ggtt.invalidate == gen6_ggtt_invalidate)
+		return;
+
 	/* We should only be called after i915_ggtt_enable_guc() */
 	GEM_BUG_ON(i915->ggtt.invalidate != guc_ggtt_invalidate);
 

drivers/gpu/drm/i915/i915_gem_gtt.h

···
 	} plane[2];
 } __packed;
 
-static inline void assert_intel_rotation_info_is_packed(void)
-{
-	BUILD_BUG_ON(sizeof(struct intel_rotation_info) != 8*sizeof(unsigned int));
-}
-
 struct intel_partial_info {
 	u64 offset;
 	unsigned int size;
 } __packed;
-
-static inline void assert_intel_partial_info_is_packed(void)
-{
-	BUILD_BUG_ON(sizeof(struct intel_partial_info) != sizeof(u64) + sizeof(unsigned int));
-}
 
 enum i915_ggtt_view_type {
 	I915_GGTT_VIEW_NORMAL = 0,
···
 	I915_GGTT_VIEW_PARTIAL = sizeof(struct intel_partial_info),
 };
 
-static inline void assert_i915_ggtt_view_type_is_unique(void)
+static inline void assert_i915_gem_gtt_types(void)
 {
+	BUILD_BUG_ON(sizeof(struct intel_rotation_info) != 8*sizeof(unsigned int));
+	BUILD_BUG_ON(sizeof(struct intel_partial_info) != sizeof(u64) + sizeof(unsigned int));
+
 	/* As we encode the size of each branch inside the union into its type,
 	 * we have to be careful that each branch has a unique size.
 	 */
···
 };
 
 #define px_base(px) (&(px)->base)
-#define px_page(px) (px_base(px)->page)
 #define px_dma(px) (px_base(px)->daddr)
 
 struct i915_page_table {
···
 
 	struct pagestash free_pages;
 
+	/* Global GTT */
+	bool is_ggtt:1;
+
 	/* Some systems require uncached updates of the page directories */
 	bool pt_kmap_wc:1;
 
···
 	I915_SELFTEST_DECLARE(bool scrub_64K);
 };
 
-#define i915_is_ggtt(V) (!(V)->file)
+#define i915_is_ggtt(vm) ((vm)->is_ggtt)
 
 static inline bool
 i915_vm_is_48bit(const struct i915_address_space *vm)
···
 	bool do_idle_maps;
 
 	int mtrr;
+
+	u32 pin_bias;
 
 	struct drm_mm_node error_capture;
 };

drivers/gpu/drm/i915/i915_gem_object.h

···
 }
 
 static inline unsigned int
-i915_gem_object_get_tiling(struct drm_i915_gem_object *obj)
+i915_gem_object_get_tiling(const struct drm_i915_gem_object *obj)
 {
 	return obj->tiling_and_stride & TILING_MASK;
 }
 
 static inline bool
-i915_gem_object_is_tiled(struct drm_i915_gem_object *obj)
+i915_gem_object_is_tiled(const struct drm_i915_gem_object *obj)
 {
 	return i915_gem_object_get_tiling(obj) != I915_TILING_NONE;
 }
 
 static inline unsigned int
-i915_gem_object_get_stride(struct drm_i915_gem_object *obj)
+i915_gem_object_get_stride(const struct drm_i915_gem_object *obj)
 {
 	return obj->tiling_and_stride & STRIDE_MASK;
 }
···
 }
 
 static inline unsigned int
-i915_gem_object_get_tile_height(struct drm_i915_gem_object *obj)
+i915_gem_object_get_tile_height(const struct drm_i915_gem_object *obj)
 {
 	return i915_gem_tile_height(i915_gem_object_get_tiling(obj));
 }
 
 static inline unsigned int
-i915_gem_object_get_tile_row_size(struct drm_i915_gem_object *obj)
+i915_gem_object_get_tile_row_size(const struct drm_i915_gem_object *obj)
 {
 	return (i915_gem_object_get_stride(obj) *
 		i915_gem_object_get_tile_height(obj));

drivers/gpu/drm/i915/i915_irq.c

···
 void gen6_reset_rps_interrupts(struct drm_i915_private *dev_priv)
 {
 	spin_lock_irq(&dev_priv->irq_lock);
-	gen6_reset_pm_iir(dev_priv, dev_priv->pm_rps_events);
+	gen6_reset_pm_iir(dev_priv, GEN6_PM_RPS_EVENTS);
 	dev_priv->gt_pm.rps.pm_iir = 0;
 	spin_unlock_irq(&dev_priv->irq_lock);
 }
···
 
 	I915_WRITE(GEN6_PMINTRMSK, gen6_sanitize_rps_pm_mask(dev_priv, ~0u));
 
-	gen6_disable_pm_irq(dev_priv, dev_priv->pm_rps_events);
+	gen6_disable_pm_irq(dev_priv, GEN6_PM_RPS_EVENTS);
 
 	spin_unlock_irq(&dev_priv->irq_lock);
 	synchronize_irq(dev_priv->drm.irq);
···
 
 	if (master_ctl & (GEN8_GT_PM_IRQ | GEN8_GT_GUC_IRQ)) {
 		gt_iir[2] = raw_reg_read(regs, GEN8_GT_IIR(2));
-		if (likely(gt_iir[2] & (i915->pm_rps_events |
-					i915->pm_guc_events)))
-			raw_reg_write(regs, GEN8_GT_IIR(2),
-				      gt_iir[2] & (i915->pm_rps_events |
-						   i915->pm_guc_events));
+		if (likely(gt_iir[2]))
+			raw_reg_write(regs, GEN8_GT_IIR(2), gt_iir[2]);
 	}
 
 	if (master_ctl & GEN8_GT_VECS_IRQ) {
···
 		kobject_uevent_env(kobj, KOBJ_CHANGE, reset_done_event);
 }
 
-static void i915_clear_error_registers(struct drm_i915_private *dev_priv)
+void i915_clear_error_registers(struct drm_i915_private *dev_priv)
 {
 	u32 eir;
 
···
 		DRM_DEBUG_DRIVER("EIR stuck: 0x%08x, masking\n", eir);
 		I915_WRITE(EMR, I915_READ(EMR) | eir);
 		I915_WRITE(IIR, I915_MASTER_ERROR_INTERRUPT);
+	}
+
+	if (INTEL_GEN(dev_priv) >= 8) {
+		I915_WRITE(GEN8_RING_FAULT_REG,
+			   I915_READ(GEN8_RING_FAULT_REG) & ~RING_FAULT_VALID);
+		POSTING_READ(GEN8_RING_FAULT_REG);
+	} else if (INTEL_GEN(dev_priv) >= 6) {
+		struct intel_engine_cs *engine;
+		enum intel_engine_id id;
+
+		for_each_engine(engine, dev_priv, id) {
+			I915_WRITE(RING_FAULT_REG(engine),
+				   I915_READ(RING_FAULT_REG(engine)) &
+				   ~RING_FAULT_VALID);
+		}
+		POSTING_READ(RING_FAULT_REG(dev_priv->engine[RCS]));
 	}
 }
 
···
 	 * Try engine reset when available. We fall back to full reset if
 	 * single reset fails.
 	 */
-	if (intel_has_reset_engine(dev_priv)) {
+	if (intel_has_reset_engine(dev_priv) &&
+	    !i915_terminally_wedged(&dev_priv->gpu_error)) {
 		for_each_engine_masked(engine, dev_priv, engine_mask, tmp) {
 			BUILD_BUG_ON(I915_RESET_MODESET >= I915_RESET_ENGINE);
 			if (test_and_set_bit(I915_RESET_ENGINE + engine->id,
···
 		/* WaGsvRC0ResidencyMethod:vlv */
 		dev_priv->pm_rps_events = GEN6_PM_RP_UP_EI_EXPIRED;
 	else
-		dev_priv->pm_rps_events = GEN6_PM_RPS_EVENTS;
+		dev_priv->pm_rps_events = (GEN6_PM_RP_UP_THRESHOLD |
+					   GEN6_PM_RP_DOWN_THRESHOLD |
+					   GEN6_PM_RP_DOWN_TIMEOUT);
 
 	rps->pm_intrmsk_mbz = 0;
 

drivers/gpu/drm/i915/i915_pci.c

···
 	.unfenced_needs_alignment = 1, \
 	.ring_mask = RENDER_RING, \
 	.has_snoop = true, \
+	.has_coherent_ggtt = false, \
 	GEN_DEFAULT_PIPEOFFSETS, \
 	GEN_DEFAULT_PAGE_SIZES, \
 	CURSOR_OFFSETS
···
 	.has_gmch_display = 1, \
 	.ring_mask = RENDER_RING, \
 	.has_snoop = true, \
+	.has_coherent_ggtt = true, \
 	GEN_DEFAULT_PIPEOFFSETS, \
 	GEN_DEFAULT_PAGE_SIZES, \
 	CURSOR_OFFSETS
···
 static const struct intel_device_info intel_i915g_info = {
 	GEN3_FEATURES,
 	PLATFORM(INTEL_I915G),
+	.has_coherent_ggtt = false,
 	.cursor_needs_physical = 1,
 	.has_overlay = 1, .overlay_needs_physical = 1,
 	.hws_needs_physical = 1,
···
 	.has_gmch_display = 1, \
 	.ring_mask = RENDER_RING, \
 	.has_snoop = true, \
+	.has_coherent_ggtt = true, \
 	GEN_DEFAULT_PIPEOFFSETS, \
 	GEN_DEFAULT_PAGE_SIZES, \
 	CURSOR_OFFSETS
···
 	.has_hotplug = 1, \
 	.ring_mask = RENDER_RING | BSD_RING, \
 	.has_snoop = true, \
+	.has_coherent_ggtt = true, \
 	/* ilk does support rc6, but we do not implement [power] contexts */ \
 	.has_rc6 = 0, \
 	GEN_DEFAULT_PIPEOFFSETS, \
···
 	.has_hotplug = 1, \
 	.has_fbc = 1, \
 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING, \
+	.has_coherent_ggtt = true, \
 	.has_llc = 1, \
 	.has_rc6 = 1, \
 	.has_rc6p = 1, \
···
 	.has_hotplug = 1, \
 	.has_fbc = 1, \
 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING, \
+	.has_coherent_ggtt = true, \
 	.has_llc = 1, \
 	.has_rc6 = 1, \
 	.has_rc6p = 1, \
···
 	.has_aliasing_ppgtt = 1,
 	.has_full_ppgtt = 1,
 	.has_snoop = true,
+	.has_coherent_ggtt = false,
 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING,
 	.display_mmio_offset = VLV_DISPLAY_BASE,
 	GEN_DEFAULT_PAGE_SIZES,
···
 	.has_ddi = 1, \
 	.has_fpga_dbg = 1, \
 	.has_psr = 1, \
-	.has_resource_streamer = 1, \
 	.has_dp_mst = 1, \
 	.has_rc6p = 0 /* RC6p removed-by HSW */, \
 	.has_runtime_pm = 1
···
 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
 	.has_64bit_reloc = 1,
 	.has_runtime_pm = 1,
-	.has_resource_streamer = 1,
 	.has_rc6 = 1,
 	.has_logical_ring_contexts = 1,
 	.has_gmch_display = 1,
···
 	.has_full_ppgtt = 1,
 	.has_reset_engine = 1,
 	.has_snoop = true,
+	.has_coherent_ggtt = false,
 	.display_mmio_offset = VLV_DISPLAY_BASE,
 	GEN_DEFAULT_PAGE_SIZES,
 	GEN_CHV_PIPEOFFSETS,
···
 	.has_runtime_pm = 1, \
 	.has_pooled_eu = 0, \
 	.has_csr = 1, \
-	.has_resource_streamer = 1, \
 	.has_rc6 = 1, \
 	.has_dp_mst = 1, \
 	.has_logical_ring_contexts = 1, \
···
 	.has_full_48bit_ppgtt = 1, \
 	.has_reset_engine = 1, \
 	.has_snoop = true, \
+	.has_coherent_ggtt = false, \
 	.has_ipc = 1, \
 	GEN9_DEFAULT_PAGE_SIZES, \
 	GEN_DEFAULT_PIPEOFFSETS, \
···
 	GEN9_FEATURES, \
 	GEN(10), \
 	.ddb_size = 1024, \
+	.has_coherent_ggtt = false, \
 	GLK_COLORS
 
 static const struct intel_device_info intel_cannonlake_info = {
···
 	GEN10_FEATURES, \
 	GEN(11), \
 	.ddb_size = 2048, \
-	.has_csr = 0, \
 	.has_logical_ring_elsq = 1
 
 static const struct intel_device_info intel_icelake_11_info = {
 	GEN11_FEATURES,
 	PLATFORM(INTEL_ICELAKE),
 	.is_alpha_support = 1,
-	.has_resource_streamer = 0,
 	.ring_mask = RENDER_RING | BLT_RING | VEBOX_RING | BSD_RING | BSD3_RING,
 };
 

drivers/gpu/drm/i915/i915_perf.c

···
 #include "i915_oa_cflgt3.h"
 #include "i915_oa_cnl.h"
 #include "i915_oa_icl.h"
+#include "intel_lrc_reg.h"
 
 /* HW requires this to be a power of two, between 128k and 16M, though driver
  * is currently generally designed assuming the largest 16M size is used such
···
 {
 	mutex_lock(&i915->drm.struct_mutex);
 
-	i915_gem_object_unpin_map(i915->perf.oa.oa_buffer.vma->obj);
-	i915_vma_unpin(i915->perf.oa.oa_buffer.vma);
-	i915_gem_object_put(i915->perf.oa.oa_buffer.vma->obj);
-
-	i915->perf.oa.oa_buffer.vma = NULL;
-	i915->perf.oa.oa_buffer.vaddr = NULL;
+	i915_vma_unpin_and_release(&i915->perf.oa.oa_buffer.vma,
+				   I915_VMA_RELEASE_MAP);
 
 	mutex_unlock(&i915->drm.struct_mutex);
+
+	i915->perf.oa.oa_buffer.vaddr = NULL;
 }
 
 static void i915_oa_stream_destroy(struct i915_perf_stream *stream)
···
 	u32 ctx_oactxctrl = dev_priv->perf.oa.ctx_oactxctrl_offset;
 	u32 ctx_flexeu0 = dev_priv->perf.oa.ctx_flexeu0_offset;
 	/* The MMIO offsets for Flex EU registers aren't contiguous */
-	u32 flex_mmio[] = {
-		i915_mmio_reg_offset(EU_PERF_CNTL0),
-		i915_mmio_reg_offset(EU_PERF_CNTL1),
-		i915_mmio_reg_offset(EU_PERF_CNTL2),
-		i915_mmio_reg_offset(EU_PERF_CNTL3),
-		i915_mmio_reg_offset(EU_PERF_CNTL4),
-		i915_mmio_reg_offset(EU_PERF_CNTL5),
-		i915_mmio_reg_offset(EU_PERF_CNTL6),
+	i915_reg_t flex_regs[] = {
+		EU_PERF_CNTL0,
+		EU_PERF_CNTL1,
+		EU_PERF_CNTL2,
+		EU_PERF_CNTL3,
+		EU_PERF_CNTL4,
+		EU_PERF_CNTL5,
+		EU_PERF_CNTL6,
 	};
 	int i;
 
-	reg_state[ctx_oactxctrl] = i915_mmio_reg_offset(GEN8_OACTXCONTROL);
-	reg_state[ctx_oactxctrl+1] = (dev_priv->perf.oa.period_exponent <<
-				      GEN8_OA_TIMER_PERIOD_SHIFT) |
-				     (dev_priv->perf.oa.periodic ?
-				      GEN8_OA_TIMER_ENABLE : 0) |
-				     GEN8_OA_COUNTER_RESUME;
+	CTX_REG(reg_state, ctx_oactxctrl, GEN8_OACTXCONTROL,
+		(dev_priv->perf.oa.period_exponent << GEN8_OA_TIMER_PERIOD_SHIFT) |
+		(dev_priv->perf.oa.periodic ? GEN8_OA_TIMER_ENABLE : 0) |
+		GEN8_OA_COUNTER_RESUME);
 
-	for (i = 0; i < ARRAY_SIZE(flex_mmio); i++) {
+	for (i = 0; i < ARRAY_SIZE(flex_regs); i++) {
 		u32 state_offset = ctx_flexeu0 + i * 2;
-		u32 mmio = flex_mmio[i];
+		u32 mmio = i915_mmio_reg_offset(flex_regs[i]);
 
 		/*
 		 * This arbitrary default will select the 'EU FPU0 Pipeline
···
 			}
 		}
 
-		reg_state[state_offset] = mmio;
-		reg_state[state_offset+1] = value;
+		CTX_REG(reg_state, state_offset, flex_regs[i], value);
 	}
 }
 
···
 	/* Switch away from any user context. */
 	ret = gen8_switch_to_updated_kernel_context(dev_priv, oa_config);
 	if (ret)
-		goto out;
+		return ret;
 
 	/*
 	 * The OA register config is setup through the context image. This image
···
 				     wait_flags,
 				     MAX_SCHEDULE_TIMEOUT);
 	if (ret)
-		goto out;
+		return ret;
 
 	/* Update all contexts now that we've stalled the submission. */
 	list_for_each_entry(ctx, &dev_priv->contexts.list, link) {
···
 			continue;
 
 		regs = i915_gem_object_pin_map(ce->state->obj, I915_MAP_WB);
-		if (IS_ERR(regs)) {
-			ret = PTR_ERR(regs);
-			goto out;
-		}
+		if (IS_ERR(regs))
+			return PTR_ERR(regs);
 
 		ce->state->obj->mm.dirty = true;
 		regs += LRC_STATE_PN * PAGE_SIZE / sizeof(*regs);
···
 		i915_gem_object_unpin_map(ce->state->obj);
 	}
 
- out:
 	return ret;
 }
 

drivers/gpu/drm/i915/i915_reg.h

···
 #define   GEN8_RPCS_S_CNT_ENABLE	(1 << 18)
 #define   GEN8_RPCS_S_CNT_SHIFT		15
 #define   GEN8_RPCS_S_CNT_MASK		(0x7 << GEN8_RPCS_S_CNT_SHIFT)
+#define   GEN11_RPCS_S_CNT_SHIFT	12
+#define   GEN11_RPCS_S_CNT_MASK		(0x3f << GEN11_RPCS_S_CNT_SHIFT)
 #define   GEN8_RPCS_SS_CNT_ENABLE	(1 << 11)
 #define   GEN8_RPCS_SS_CNT_SHIFT	8
 #define   GEN8_RPCS_SS_CNT_MASK		(0x7 << GEN8_RPCS_SS_CNT_SHIFT)
···
 /*
  * i915_power_well_id:
  *
- * Platform specific IDs used to look up power wells and - except for custom
- * power wells - to define request/status register flag bit positions. As such
- * the set of IDs on a given platform must be unique and except for custom
- * power wells their value must stay fixed.
+ * IDs used to look up power wells. Power wells accessed directly bypassing
+ * the power domains framework must be assigned a unique ID. The rest of power
+ * wells must be assigned DISP_PW_ID_NONE.
  */
 enum i915_power_well_id {
-	/*
-	 * I830
-	 *  - custom power well
-	 */
-	I830_DISP_PW_PIPES = 0,
+	DISP_PW_ID_NONE,
 
-	/*
-	 * VLV/CHV
-	 *  - PUNIT_REG_PWRGT_CTRL (bit: id*2),
-	 *    PUNIT_REG_PWRGT_STATUS (bit: id*2) (PUNIT HAS v0.8)
-	 */
-	PUNIT_POWER_WELL_RENDER			= 0,
-	PUNIT_POWER_WELL_MEDIA			= 1,
-	PUNIT_POWER_WELL_DISP2D			= 3,
-	PUNIT_POWER_WELL_DPIO_CMN_BC		= 5,
-	PUNIT_POWER_WELL_DPIO_TX_B_LANES_01	= 6,
-	PUNIT_POWER_WELL_DPIO_TX_B_LANES_23	= 7,
-	PUNIT_POWER_WELL_DPIO_TX_C_LANES_01	= 8,
-	PUNIT_POWER_WELL_DPIO_TX_C_LANES_23	= 9,
-	PUNIT_POWER_WELL_DPIO_RX0		= 10,
-	PUNIT_POWER_WELL_DPIO_RX1		= 11,
-	PUNIT_POWER_WELL_DPIO_CMN_D		= 12,
-	/*  - custom power well */
-	CHV_DISP_PW_PIPE_A,			/* 13 */
-
-	/*
-	 * HSW/BDW
-	 *  - _HSW_PWR_WELL_CTL1-4 (status bit: id*2, req bit: id*2+1)
-	 */
-	HSW_DISP_PW_GLOBAL = 15,
-
-	/*
-	 * GEN9+
-	 *  - _HSW_PWR_WELL_CTL1-4 (status bit: id*2, req bit: id*2+1)
-	 */
-	SKL_DISP_PW_MISC_IO = 0,
-	SKL_DISP_PW_DDI_A_E,
-	GLK_DISP_PW_DDI_A = SKL_DISP_PW_DDI_A_E,
-	CNL_DISP_PW_DDI_A = SKL_DISP_PW_DDI_A_E,
-	SKL_DISP_PW_DDI_B,
-	SKL_DISP_PW_DDI_C,
-	SKL_DISP_PW_DDI_D,
-	CNL_DISP_PW_DDI_F = 6,
-
-	GLK_DISP_PW_AUX_A = 8,
-	GLK_DISP_PW_AUX_B,
-	GLK_DISP_PW_AUX_C,
-	CNL_DISP_PW_AUX_A = GLK_DISP_PW_AUX_A,
-	CNL_DISP_PW_AUX_B = GLK_DISP_PW_AUX_B,
-	CNL_DISP_PW_AUX_C = GLK_DISP_PW_AUX_C,
-	CNL_DISP_PW_AUX_D,
-	CNL_DISP_PW_AUX_F,
-
-	SKL_DISP_PW_1 = 14,
+	VLV_DISP_PW_DISP2D,
+	BXT_DISP_PW_DPIO_CMN_A,
+	VLV_DISP_PW_DPIO_CMN_BC,
+	GLK_DISP_PW_DPIO_CMN_C,
+	CHV_DISP_PW_DPIO_CMN_D,
+	HSW_DISP_PW_GLOBAL,
+	SKL_DISP_PW_MISC_IO,
+	SKL_DISP_PW_1,
 	SKL_DISP_PW_2,
-
-	/* - custom power wells */
-	BXT_DPIO_CMN_A,
-	BXT_DPIO_CMN_BC,
-	GLK_DPIO_CMN_C,			/* 18 */
-
-	/*
-	 * GEN11+
-	 *  - _HSW_PWR_WELL_CTL1-4
-	 *    (status bit: (id&15)*2, req bit:(id&15)*2+1)
-	 */
-	ICL_DISP_PW_1 = 0,
-	ICL_DISP_PW_2,
-	ICL_DISP_PW_3,
-	ICL_DISP_PW_4,
-
-	/*
-	 *  - _HSW_PWR_WELL_CTL_AUX1/2/4
-	 *    (status bit: (id&15)*2, req bit:(id&15)*2+1)
-	 */
-	ICL_DISP_PW_AUX_A = 16,
-	ICL_DISP_PW_AUX_B,
-	ICL_DISP_PW_AUX_C,
-	ICL_DISP_PW_AUX_D,
-	ICL_DISP_PW_AUX_E,
-	ICL_DISP_PW_AUX_F,
-
-	ICL_DISP_PW_AUX_TBT1 = 24,
-	ICL_DISP_PW_AUX_TBT2,
-	ICL_DISP_PW_AUX_TBT3,
-	ICL_DISP_PW_AUX_TBT4,
-
-	/*
-	 *  - _HSW_PWR_WELL_CTL_DDI1/2/4
-	 *    (status bit: (id&15)*2, req bit:(id&15)*2+1)
-	 */
-	ICL_DISP_PW_DDI_A = 32,
-	ICL_DISP_PW_DDI_B,
-	ICL_DISP_PW_DDI_C,
-	ICL_DISP_PW_DDI_D,
-	ICL_DISP_PW_DDI_E,
-	ICL_DISP_PW_DDI_F,                      /* 37 */
-
-	/*
-	 * Multiple platforms.
-	 * Must start following the highest ID of any platform.
-	 * - custom power wells
-	 */
-	SKL_DISP_PW_DC_OFF = 38,
-	I915_DISP_PW_ALWAYS_ON,
 };
 
 #define PUNIT_REG_PWRGT_CTRL			0x60
 #define PUNIT_REG_PWRGT_STATUS			0x61
-#define   PUNIT_PWRGT_MASK(power_well)		(3 << ((power_well) * 2))
-#define   PUNIT_PWRGT_PWR_ON(power_well)	(0 << ((power_well) * 2))
-#define   PUNIT_PWRGT_CLK_GATE(power_well)	(1 << ((power_well) * 2))
-#define   PUNIT_PWRGT_RESET(power_well)		(2 << ((power_well) * 2))
-#define   PUNIT_PWRGT_PWR_GATE(power_well)	(3 << ((power_well) * 2))
+#define   PUNIT_PWRGT_MASK(pw_idx)		(3 << ((pw_idx) * 2))
+#define   PUNIT_PWRGT_PWR_ON(pw_idx)		(0 << ((pw_idx) * 2))
+#define   PUNIT_PWRGT_CLK_GATE(pw_idx)		(1 << ((pw_idx) * 2))
+#define   PUNIT_PWRGT_RESET(pw_idx)		(2 << ((pw_idx) * 2))
+#define   PUNIT_PWRGT_PWR_GATE(pw_idx)		(3 << ((pw_idx) * 2))
+
+#define PUNIT_PWGT_IDX_RENDER			0
+#define PUNIT_PWGT_IDX_MEDIA			1
+#define PUNIT_PWGT_IDX_DISP2D			3
+#define PUNIT_PWGT_IDX_DPIO_CMN_BC		5
+#define PUNIT_PWGT_IDX_DPIO_TX_B_LANES_01	6
+#define PUNIT_PWGT_IDX_DPIO_TX_B_LANES_23	7
+#define PUNIT_PWGT_IDX_DPIO_TX_C_LANES_01	8
+#define PUNIT_PWGT_IDX_DPIO_TX_C_LANES_23	9
+#define PUNIT_PWGT_IDX_DPIO_RX0			10
+#define PUNIT_PWGT_IDX_DPIO_RX1			11
+#define PUNIT_PWGT_IDX_DPIO_CMN_D		12
 
 #define PUNIT_REG_GPU_LFM			0xd3
 #define PUNIT_REG_GPU_FREQ_REQ			0xd4
···
 #define   N_SCALAR(x)			((x) << 24)
 #define   N_SCALAR_MASK			(0x7F << 24)
 
-#define _ICL_MG_PHY_PORT_LN(port, ln, ln0p1, ln0p2, ln1p1) \
+#define MG_PHY_PORT_LN(port, ln, ln0p1, ln0p2, ln1p1) \
 	_MMIO(_PORT((port) - PORT_C, ln0p1, ln0p2) + (ln) * ((ln1p1) - (ln0p1)))
 
-#define _ICL_MG_TX_LINK_PARAMS_TX1LN0_PORT1		0x16812C
-#define _ICL_MG_TX_LINK_PARAMS_TX1LN1_PORT1		0x16852C
-#define _ICL_MG_TX_LINK_PARAMS_TX1LN0_PORT2		0x16912C
-#define _ICL_MG_TX_LINK_PARAMS_TX1LN1_PORT2		0x16952C
-#define _ICL_MG_TX_LINK_PARAMS_TX1LN0_PORT3		0x16A12C
-#define _ICL_MG_TX_LINK_PARAMS_TX1LN1_PORT3		0x16A52C
-#define _ICL_MG_TX_LINK_PARAMS_TX1LN0_PORT4		0x16B12C
-#define _ICL_MG_TX_LINK_PARAMS_TX1LN1_PORT4		0x16B52C
-#define ICL_PORT_MG_TX1_LINK_PARAMS(port, ln) \
-	_ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_LINK_PARAMS_TX1LN0_PORT1, \
-				      _ICL_MG_TX_LINK_PARAMS_TX1LN0_PORT2, \
-				      _ICL_MG_TX_LINK_PARAMS_TX1LN1_PORT1)
+#define MG_TX_LINK_PARAMS_TX1LN0_PORT1		0x16812C
+#define MG_TX_LINK_PARAMS_TX1LN1_PORT1		0x16852C
+#define MG_TX_LINK_PARAMS_TX1LN0_PORT2		0x16912C
+#define MG_TX_LINK_PARAMS_TX1LN1_PORT2		0x16952C
+#define MG_TX_LINK_PARAMS_TX1LN0_PORT3		0x16A12C
+#define MG_TX_LINK_PARAMS_TX1LN1_PORT3		0x16A52C
+#define MG_TX_LINK_PARAMS_TX1LN0_PORT4		0x16B12C
+#define MG_TX_LINK_PARAMS_TX1LN1_PORT4		0x16B52C
+#define MG_TX1_LINK_PARAMS(port, ln) \
+	MG_PHY_PORT_LN(port, ln, MG_TX_LINK_PARAMS_TX1LN0_PORT1, \
+				 MG_TX_LINK_PARAMS_TX1LN0_PORT2, \
+				 MG_TX_LINK_PARAMS_TX1LN1_PORT1)
 
-#define _ICL_MG_TX_LINK_PARAMS_TX2LN0_PORT1		0x1680AC
-#define _ICL_MG_TX_LINK_PARAMS_TX2LN1_PORT1		0x1684AC
-#define _ICL_MG_TX_LINK_PARAMS_TX2LN0_PORT2		0x1690AC
-#define _ICL_MG_TX_LINK_PARAMS_TX2LN1_PORT2		0x1694AC
-#define _ICL_MG_TX_LINK_PARAMS_TX2LN0_PORT3		0x16A0AC
-#define _ICL_MG_TX_LINK_PARAMS_TX2LN1_PORT3		0x16A4AC
-#define _ICL_MG_TX_LINK_PARAMS_TX2LN0_PORT4		0x16B0AC
-#define _ICL_MG_TX_LINK_PARAMS_TX2LN1_PORT4		0x16B4AC
-#define ICL_PORT_MG_TX2_LINK_PARAMS(port, ln) \
-	_ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_LINK_PARAMS_TX2LN0_PORT1, \
-				      _ICL_MG_TX_LINK_PARAMS_TX2LN0_PORT2, \
-				      _ICL_MG_TX_LINK_PARAMS_TX2LN1_PORT1)
-#define CRI_USE_FS32			(1 << 5)
+#define MG_TX_LINK_PARAMS_TX2LN0_PORT1		0x1680AC
+#define MG_TX_LINK_PARAMS_TX2LN1_PORT1		0x1684AC
+#define MG_TX_LINK_PARAMS_TX2LN0_PORT2		0x1690AC
+#define MG_TX_LINK_PARAMS_TX2LN1_PORT2		0x1694AC
+#define MG_TX_LINK_PARAMS_TX2LN0_PORT3		0x16A0AC
+#define MG_TX_LINK_PARAMS_TX2LN1_PORT3		0x16A4AC
+#define MG_TX_LINK_PARAMS_TX2LN0_PORT4		0x16B0AC
+#define MG_TX_LINK_PARAMS_TX2LN1_PORT4		0x16B4AC
+#define MG_TX2_LINK_PARAMS(port, ln) \
+	MG_PHY_PORT_LN(port, ln, MG_TX_LINK_PARAMS_TX2LN0_PORT1, \
+				 MG_TX_LINK_PARAMS_TX2LN0_PORT2, \
+				 MG_TX_LINK_PARAMS_TX2LN1_PORT1)
+#define   CRI_USE_FS32			(1 << 5)
 
-#define _ICL_MG_TX_PISO_READLOAD_TX1LN0_PORT1		0x16814C
-#define _ICL_MG_TX_PISO_READLOAD_TX1LN1_PORT1		0x16854C
-#define _ICL_MG_TX_PISO_READLOAD_TX1LN0_PORT2		0x16914C
-#define _ICL_MG_TX_PISO_READLOAD_TX1LN1_PORT2		0x16954C
-#define _ICL_MG_TX_PISO_READLOAD_TX1LN0_PORT3		0x16A14C
-#define _ICL_MG_TX_PISO_READLOAD_TX1LN1_PORT3		0x16A54C
-#define _ICL_MG_TX_PISO_READLOAD_TX1LN0_PORT4		0x16B14C
-#define _ICL_MG_TX_PISO_READLOAD_TX1LN1_PORT4		0x16B54C
-#define ICL_PORT_MG_TX1_PISO_READLOAD(port, ln) \
-	_ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_PISO_READLOAD_TX1LN0_PORT1, \
-				      _ICL_MG_TX_PISO_READLOAD_TX1LN0_PORT2, \
-				      _ICL_MG_TX_PISO_READLOAD_TX1LN1_PORT1)
+#define MG_TX_PISO_READLOAD_TX1LN0_PORT1		0x16814C
+#define MG_TX_PISO_READLOAD_TX1LN1_PORT1		0x16854C
+#define MG_TX_PISO_READLOAD_TX1LN0_PORT2		0x16914C
+#define MG_TX_PISO_READLOAD_TX1LN1_PORT2		0x16954C
+#define MG_TX_PISO_READLOAD_TX1LN0_PORT3		0x16A14C
+#define MG_TX_PISO_READLOAD_TX1LN1_PORT3		0x16A54C
+#define MG_TX_PISO_READLOAD_TX1LN0_PORT4		0x16B14C
+#define MG_TX_PISO_READLOAD_TX1LN1_PORT4		0x16B54C
+#define MG_TX1_PISO_READLOAD(port, ln) \
+	MG_PHY_PORT_LN(port, ln, MG_TX_PISO_READLOAD_TX1LN0_PORT1, \
+				 MG_TX_PISO_READLOAD_TX1LN0_PORT2, \
+				 MG_TX_PISO_READLOAD_TX1LN1_PORT1)
 
-#define _ICL_MG_TX_PISO_READLOAD_TX2LN0_PORT1		0x1680CC
-#define _ICL_MG_TX_PISO_READLOAD_TX2LN1_PORT1		0x1684CC
-#define _ICL_MG_TX_PISO_READLOAD_TX2LN0_PORT2		0x1690CC
-#define _ICL_MG_TX_PISO_READLOAD_TX2LN1_PORT2		0x1694CC
-#define _ICL_MG_TX_PISO_READLOAD_TX2LN0_PORT3		0x16A0CC
-#define _ICL_MG_TX_PISO_READLOAD_TX2LN1_PORT3		0x16A4CC
-#define _ICL_MG_TX_PISO_READLOAD_TX2LN0_PORT4		0x16B0CC
-#define _ICL_MG_TX_PISO_READLOAD_TX2LN1_PORT4		0x16B4CC
-#define ICL_PORT_MG_TX2_PISO_READLOAD(port, ln) \
-	_ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_PISO_READLOAD_TX2LN0_PORT1, \
-				      _ICL_MG_TX_PISO_READLOAD_TX2LN0_PORT2, \
-				      _ICL_MG_TX_PISO_READLOAD_TX2LN1_PORT1)
-#define CRI_CALCINIT					(1 << 1)
+#define MG_TX_PISO_READLOAD_TX2LN0_PORT1		0x1680CC
+#define MG_TX_PISO_READLOAD_TX2LN1_PORT1		0x1684CC
+#define MG_TX_PISO_READLOAD_TX2LN0_PORT2		0x1690CC
+#define MG_TX_PISO_READLOAD_TX2LN1_PORT2		0x1694CC
+#define MG_TX_PISO_READLOAD_TX2LN0_PORT3		0x16A0CC
+#define MG_TX_PISO_READLOAD_TX2LN1_PORT3		0x16A4CC
+#define MG_TX_PISO_READLOAD_TX2LN0_PORT4		0x16B0CC
+#define MG_TX_PISO_READLOAD_TX2LN1_PORT4		0x16B4CC
+#define MG_TX2_PISO_READLOAD(port, ln) \
+	MG_PHY_PORT_LN(port, ln, MG_TX_PISO_READLOAD_TX2LN0_PORT1, \
+				 MG_TX_PISO_READLOAD_TX2LN0_PORT2, \
+				 MG_TX_PISO_READLOAD_TX2LN1_PORT1)
+#define   CRI_CALCINIT					(1 << 1)
 
-#define _ICL_MG_TX_SWINGCTRL_TX1LN0_PORT1		0x168148
-#define _ICL_MG_TX_SWINGCTRL_TX1LN1_PORT1		0x168548
-#define _ICL_MG_TX_SWINGCTRL_TX1LN0_PORT2		0x169148
-#define _ICL_MG_TX_SWINGCTRL_TX1LN1_PORT2		0x169548
-#define _ICL_MG_TX_SWINGCTRL_TX1LN0_PORT3		0x16A148
-#define _ICL_MG_TX_SWINGCTRL_TX1LN1_PORT3		0x16A548
-#define _ICL_MG_TX_SWINGCTRL_TX1LN0_PORT4		0x16B148
-#define _ICL_MG_TX_SWINGCTRL_TX1LN1_PORT4		0x16B548
-#define ICL_PORT_MG_TX1_SWINGCTRL(port, ln) \
-	_ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_SWINGCTRL_TX1LN0_PORT1, \
-				      _ICL_MG_TX_SWINGCTRL_TX1LN0_PORT2, \
-				      _ICL_MG_TX_SWINGCTRL_TX1LN1_PORT1)
+#define MG_TX_SWINGCTRL_TX1LN0_PORT1		0x168148
+#define MG_TX_SWINGCTRL_TX1LN1_PORT1		0x168548
+#define MG_TX_SWINGCTRL_TX1LN0_PORT2		0x169148
+#define MG_TX_SWINGCTRL_TX1LN1_PORT2		0x169548
+#define MG_TX_SWINGCTRL_TX1LN0_PORT3		0x16A148
+#define MG_TX_SWINGCTRL_TX1LN1_PORT3		0x16A548
+#define MG_TX_SWINGCTRL_TX1LN0_PORT4		0x16B148
+#define MG_TX_SWINGCTRL_TX1LN1_PORT4		0x16B548
+#define MG_TX1_SWINGCTRL(port, ln) \
+	MG_PHY_PORT_LN(port, ln, MG_TX_SWINGCTRL_TX1LN0_PORT1, \
+				 MG_TX_SWINGCTRL_TX1LN0_PORT2, \
+				 MG_TX_SWINGCTRL_TX1LN1_PORT1)
 
-#define _ICL_MG_TX_SWINGCTRL_TX2LN0_PORT1		0x1680C8
-#define _ICL_MG_TX_SWINGCTRL_TX2LN1_PORT1		0x1684C8
-#define _ICL_MG_TX_SWINGCTRL_TX2LN0_PORT2		0x1690C8
-#define _ICL_MG_TX_SWINGCTRL_TX2LN1_PORT2		0x1694C8
-#define _ICL_MG_TX_SWINGCTRL_TX2LN0_PORT3		0x16A0C8
-#define _ICL_MG_TX_SWINGCTRL_TX2LN1_PORT3		0x16A4C8
-#define _ICL_MG_TX_SWINGCTRL_TX2LN0_PORT4		0x16B0C8
-#define _ICL_MG_TX_SWINGCTRL_TX2LN1_PORT4		0x16B4C8
-#define ICL_PORT_MG_TX2_SWINGCTRL(port, ln) \
-	_ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_SWINGCTRL_TX2LN0_PORT1, \
-				      _ICL_MG_TX_SWINGCTRL_TX2LN0_PORT2, \
-				      _ICL_MG_TX_SWINGCTRL_TX2LN1_PORT1)
-#define CRI_TXDEEMPH_OVERRIDE_17_12(x)			((x) << 0)
-#define CRI_TXDEEMPH_OVERRIDE_17_12_MASK		(0x3F << 0)
+#define MG_TX_SWINGCTRL_TX2LN0_PORT1		0x1680C8
+#define MG_TX_SWINGCTRL_TX2LN1_PORT1		0x1684C8
+#define MG_TX_SWINGCTRL_TX2LN0_PORT2		0x1690C8
+#define MG_TX_SWINGCTRL_TX2LN1_PORT2		0x1694C8
+#define MG_TX_SWINGCTRL_TX2LN0_PORT3		0x16A0C8
+#define MG_TX_SWINGCTRL_TX2LN1_PORT3		0x16A4C8
+#define MG_TX_SWINGCTRL_TX2LN0_PORT4		0x16B0C8
+#define MG_TX_SWINGCTRL_TX2LN1_PORT4		0x16B4C8
+#define MG_TX2_SWINGCTRL(port, ln) \
+	MG_PHY_PORT_LN(port, ln, MG_TX_SWINGCTRL_TX2LN0_PORT1, \
+				 MG_TX_SWINGCTRL_TX2LN0_PORT2, \
+				 MG_TX_SWINGCTRL_TX2LN1_PORT1)
+#define   CRI_TXDEEMPH_OVERRIDE_17_12(x)		((x) << 0)
+#define   CRI_TXDEEMPH_OVERRIDE_17_12_MASK		(0x3F << 0)
 
-#define _ICL_MG_TX_DRVCTRL_TX1LN0_PORT1			0x168144
-#define _ICL_MG_TX_DRVCTRL_TX1LN1_PORT1			0x168544
-#define _ICL_MG_TX_DRVCTRL_TX1LN0_PORT2			0x169144
-#define _ICL_MG_TX_DRVCTRL_TX1LN1_PORT2			0x169544
-#define _ICL_MG_TX_DRVCTRL_TX1LN0_PORT3			0x16A144
-#define _ICL_MG_TX_DRVCTRL_TX1LN1_PORT3			0x16A544
-#define _ICL_MG_TX_DRVCTRL_TX1LN0_PORT4			0x16B144
-#define _ICL_MG_TX_DRVCTRL_TX1LN1_PORT4			0x16B544
-#define ICL_PORT_MG_TX1_DRVCTRL(port, ln) \
-	_ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_DRVCTRL_TX1LN0_PORT1, \
-				      _ICL_MG_TX_DRVCTRL_TX1LN0_PORT2, \
-				      _ICL_MG_TX_DRVCTRL_TX1LN1_PORT1)
+#define MG_TX_DRVCTRL_TX1LN0_TXPORT1			0x168144
+#define MG_TX_DRVCTRL_TX1LN1_TXPORT1			0x168544
+#define MG_TX_DRVCTRL_TX1LN0_TXPORT2			0x169144
+#define MG_TX_DRVCTRL_TX1LN1_TXPORT2			0x169544
+#define MG_TX_DRVCTRL_TX1LN0_TXPORT3			0x16A144
+#define MG_TX_DRVCTRL_TX1LN1_TXPORT3			0x16A544
+#define MG_TX_DRVCTRL_TX1LN0_TXPORT4			0x16B144
+#define MG_TX_DRVCTRL_TX1LN1_TXPORT4			0x16B544
+#define MG_TX1_DRVCTRL(port, ln) \
+	MG_PHY_PORT_LN(port, ln, MG_TX_DRVCTRL_TX1LN0_TXPORT1, \
+				 MG_TX_DRVCTRL_TX1LN0_TXPORT2, \
+				 MG_TX_DRVCTRL_TX1LN1_TXPORT1)
 
-#define _ICL_MG_TX_DRVCTRL_TX2LN0_PORT1			0x1680C4
-#define _ICL_MG_TX_DRVCTRL_TX2LN1_PORT1			0x1684C4
-#define _ICL_MG_TX_DRVCTRL_TX2LN0_PORT2			0x1690C4
-#define _ICL_MG_TX_DRVCTRL_TX2LN1_PORT2			0x1694C4
-#define _ICL_MG_TX_DRVCTRL_TX2LN0_PORT3			0x16A0C4
-#define _ICL_MG_TX_DRVCTRL_TX2LN1_PORT3			0x16A4C4
-#define _ICL_MG_TX_DRVCTRL_TX2LN0_PORT4			0x16B0C4
-#define _ICL_MG_TX_DRVCTRL_TX2LN1_PORT4			0x16B4C4
-#define ICL_PORT_MG_TX2_DRVCTRL(port, ln) \
-	_ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_DRVCTRL_TX2LN0_PORT1, \
-				      _ICL_MG_TX_DRVCTRL_TX2LN0_PORT2, \
-				      _ICL_MG_TX_DRVCTRL_TX2LN1_PORT1)
-#define CRI_TXDEEMPH_OVERRIDE_11_6(x)			((x) << 24)
-#define CRI_TXDEEMPH_OVERRIDE_11_6_MASK			(0x3F << 24)
-#define CRI_TXDEEMPH_OVERRIDE_EN			(1 << 22)
-#define CRI_TXDEEMPH_OVERRIDE_5_0(x)			((x) << 16)
-#define CRI_TXDEEMPH_OVERRIDE_5_0_MASK			(0x3F << 16)
+#define MG_TX_DRVCTRL_TX2LN0_PORT1			0x1680C4
+#define MG_TX_DRVCTRL_TX2LN1_PORT1			0x1684C4
+#define MG_TX_DRVCTRL_TX2LN0_PORT2			0x1690C4
+#define MG_TX_DRVCTRL_TX2LN1_PORT2			0x1694C4
+#define MG_TX_DRVCTRL_TX2LN0_PORT3			0x16A0C4
+#define MG_TX_DRVCTRL_TX2LN1_PORT3			0x16A4C4
+#define MG_TX_DRVCTRL_TX2LN0_PORT4			0x16B0C4
+#define MG_TX_DRVCTRL_TX2LN1_PORT4			0x16B4C4
+#define MG_TX2_DRVCTRL(port, ln) \
+	MG_PHY_PORT_LN(port, ln, MG_TX_DRVCTRL_TX2LN0_PORT1, \
+				 MG_TX_DRVCTRL_TX2LN0_PORT2, \
+				 MG_TX_DRVCTRL_TX2LN1_PORT1)
+#define   CRI_TXDEEMPH_OVERRIDE_11_6(x)			((x) << 24)
+#define   CRI_TXDEEMPH_OVERRIDE_11_6_MASK		(0x3F << 24)
+#define   CRI_TXDEEMPH_OVERRIDE_EN			(1 << 22)
+#define   CRI_TXDEEMPH_OVERRIDE_5_0(x)			((x) << 16)
+#define   CRI_TXDEEMPH_OVERRIDE_5_0_MASK		(0x3F << 16)
+#define   CRI_LOADGEN_SEL(x)				((x) << 12)
+#define   CRI_LOADGEN_SEL_MASK				(0x3 << 12)
+
+#define MG_CLKHUB_LN0_PORT1			0x16839C
+#define MG_CLKHUB_LN1_PORT1			0x16879C
+#define MG_CLKHUB_LN0_PORT2			0x16939C
+#define MG_CLKHUB_LN1_PORT2			0x16979C
+#define MG_CLKHUB_LN0_PORT3			0x16A39C
+#define MG_CLKHUB_LN1_PORT3			0x16A79C
+#define MG_CLKHUB_LN0_PORT4			0x16B39C
+#define MG_CLKHUB_LN1_PORT4			0x16B79C
+#define MG_CLKHUB(port, ln) \
+	MG_PHY_PORT_LN(port, ln, MG_CLKHUB_LN0_PORT1, \
+				 MG_CLKHUB_LN0_PORT2, \
+				 MG_CLKHUB_LN1_PORT1)
+#define   CFG_LOW_RATE_LKREN_EN				(1 << 11)
+
+#define MG_TX_DCC_TX1LN0_PORT1			0x168110
+#define MG_TX_DCC_TX1LN1_PORT1			0x168510
+#define MG_TX_DCC_TX1LN0_PORT2			0x169110
+#define MG_TX_DCC_TX1LN1_PORT2			0x169510
+#define MG_TX_DCC_TX1LN0_PORT3			0x16A110
+#define MG_TX_DCC_TX1LN1_PORT3			0x16A510
+#define MG_TX_DCC_TX1LN0_PORT4			0x16B110
+#define MG_TX_DCC_TX1LN1_PORT4			0x16B510
+#define MG_TX1_DCC(port, ln) \
+	MG_PHY_PORT_LN(port, ln, MG_TX_DCC_TX1LN0_PORT1, \
+				 MG_TX_DCC_TX1LN0_PORT2, \
+				 MG_TX_DCC_TX1LN1_PORT1)
+#define MG_TX_DCC_TX2LN0_PORT1			0x168090
+#define MG_TX_DCC_TX2LN1_PORT1			0x168490
+#define MG_TX_DCC_TX2LN0_PORT2			0x169090
+#define MG_TX_DCC_TX2LN1_PORT2			0x169490
+#define MG_TX_DCC_TX2LN0_PORT3			0x16A090
+#define MG_TX_DCC_TX2LN1_PORT3			0x16A490
+#define MG_TX_DCC_TX2LN0_PORT4			0x16B090
+#define MG_TX_DCC_TX2LN1_PORT4			0x16B490
+#define MG_TX2_DCC(port, ln) \
+	MG_PHY_PORT_LN(port, ln, MG_TX_DCC_TX2LN0_PORT1, \
+				 MG_TX_DCC_TX2LN0_PORT2, \
+				 MG_TX_DCC_TX2LN1_PORT1)
+#define   CFG_AMI_CK_DIV_OVERRIDE_VAL(x)	((x) << 25)
+#define   CFG_AMI_CK_DIV_OVERRIDE_VAL_MASK	(0x3 << 25)
+#define   CFG_AMI_CK_DIV_OVERRIDE_EN		(1 << 24)
+
+#define MG_DP_MODE_LN0_ACU_PORT1			0x1683A0
+#define MG_DP_MODE_LN1_ACU_PORT1			0x1687A0
+#define MG_DP_MODE_LN0_ACU_PORT2			0x1693A0
+#define MG_DP_MODE_LN1_ACU_PORT2			0x1697A0
+#define MG_DP_MODE_LN0_ACU_PORT3			0x16A3A0
+#define MG_DP_MODE_LN1_ACU_PORT3			0x16A7A0
+#define MG_DP_MODE_LN0_ACU_PORT4			0x16B3A0
+#define MG_DP_MODE_LN1_ACU_PORT4			0x16B7A0
+#define MG_DP_MODE(port, ln)	\
+	MG_PHY_PORT_LN(port, ln, MG_DP_MODE_LN0_ACU_PORT1, \
+				 MG_DP_MODE_LN0_ACU_PORT2, \
+				 MG_DP_MODE_LN1_ACU_PORT1)
+#define   MG_DP_MODE_CFG_DP_X2_MODE			(1 << 7)
+#define   MG_DP_MODE_CFG_DP_X1_MODE			(1 << 6)
+#define   MG_DP_MODE_CFG_TR2PWR_GATING			(1 << 5)
+#define   MG_DP_MODE_CFG_TRPWR_GATING			(1 << 4)
+#define   MG_DP_MODE_CFG_CLNPWR_GATING			(1 << 3)
+#define   MG_DP_MODE_CFG_DIGPWR_GATING			(1 << 2)
+#define   MG_DP_MODE_CFG_GAONPWR_GATING			(1 << 1)
+
+#define MG_MISC_SUS0_PORT1				0x168814
+#define MG_MISC_SUS0_PORT2				0x169814
+#define MG_MISC_SUS0_PORT3				0x16A814
+#define MG_MISC_SUS0_PORT4				0x16B814
+#define MG_MISC_SUS0(tc_port) \
+	_MMIO(_PORT(tc_port, MG_MISC_SUS0_PORT1, MG_MISC_SUS0_PORT2))
+#define   MG_MISC_SUS0_SUSCLK_DYNCLKGATE_MODE_MASK	(3 << 14)
+#define   MG_MISC_SUS0_SUSCLK_DYNCLKGATE_MODE(x)	((x) << 14)
+#define   MG_MISC_SUS0_CFG_TR2PWR_GATING		(1 << 12)
+#define   MG_MISC_SUS0_CFG_CL2PWR_GATING		(1 << 11)
+#define   MG_MISC_SUS0_CFG_GAONPWR_GATING		(1 << 10)
+#define   MG_MISC_SUS0_CFG_TRPWR_GATING			(1 << 7)
+#define   MG_MISC_SUS0_CFG_CL1PWR_GATING		(1 << 6)
+#define   MG_MISC_SUS0_CFG_DGPWR_GATING			(1 << 5)
 
 /* The spec defines this only for BXT PHY0, but lets assume that this
  * would exist for PHY1 too if it had a second channel.
···
 /*
  * GPIO regs
  */
-#define GPIOA			_MMIO(0x5010)
-#define GPIOB			_MMIO(0x5014)
-#define GPIOC			_MMIO(0x5018)
-#define GPIOD			_MMIO(0x501c)
-#define GPIOE			_MMIO(0x5020)
-#define GPIOF			_MMIO(0x5024)
-#define GPIOG			_MMIO(0x5028)
-#define GPIOH			_MMIO(0x502c)
-#define GPIOJ			_MMIO(0x5034)
-#define GPIOK			_MMIO(0x5038)
-#define GPIOL			_MMIO(0x503C)
-#define GPIOM			_MMIO(0x5040)
+#define GPIO(gpio)		_MMIO(dev_priv->gpio_mmio_base + 0x5010 + \
+				      4 * (gpio))
+
 # define GPIO_CLOCK_DIR_MASK		(1 << 0)
 # define GPIO_CLOCK_DIR_IN		(0 << 1)
 # define GPIO_CLOCK_DIR_OUT		(1 << 1)
···
 #define   DP_AUX_CH_CTL_PSR_DATA_AUX_REG_SKL	(1 << 14)
 #define   DP_AUX_CH_CTL_FS_DATA_AUX_REG_SKL	(1 << 13)
 #define   DP_AUX_CH_CTL_GTC_DATA_AUX_REG_SKL	(1 << 12)
+#define   DP_AUX_CH_CTL_TBT_IO			(1 << 11)
 #define   DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL_MASK (0x1f << 5)
 #define   DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(c) (((c) - 1) << 5)
 #define   DP_AUX_CH_CTL_SYNC_PULSE_SKL(c)   ((c) - 1)
···
 #define   PLANE_CTL_YUV422_UYVY			(1 << 16)
 #define   PLANE_CTL_YUV422_YVYU			(2 << 16)
 #define   PLANE_CTL_YUV422_VYUY			(3 << 16)
-#define   PLANE_CTL_DECOMPRESSION_ENABLE	(1 << 15)
+#define   PLANE_CTL_RENDER_DECOMPRESSION_ENABLE	(1 << 15)
 #define   PLANE_CTL_TRICKLE_FEED_DISABLE	(1 << 14)
 #define   PLANE_CTL_PLANE_GAMMA_DISABLE		(1 << 13) /* Pre-GLK */
 #define   PLANE_CTL_TILED_MASK			(0x7 << 10)
···
 #define  GEN11_TC3_HOTPLUG			(1 << 18)
 #define  GEN11_TC2_HOTPLUG			(1 << 17)
 #define  GEN11_TC1_HOTPLUG			(1 << 16)
+#define  GEN11_TC_HOTPLUG(tc_port)		(1 << ((tc_port) + 16))
 #define  GEN11_DE_TC_HOTPLUG_MASK		(GEN11_TC4_HOTPLUG | \
 						 GEN11_TC3_HOTPLUG | \
 						 GEN11_TC2_HOTPLUG | \
···
 #define  GEN11_TBT3_HOTPLUG			(1 << 2)
 #define  GEN11_TBT2_HOTPLUG			(1 << 1)
 #define  GEN11_TBT1_HOTPLUG			(1 << 0)
+#define  GEN11_TBT_HOTPLUG(tc_port)		(1 << (tc_port))
 #define  GEN11_DE_TBT_HOTPLUG_MASK		(GEN11_TBT4_HOTPLUG | \
 						 GEN11_TBT3_HOTPLUG | \
 						 GEN11_TBT2_HOTPLUG | \
···
 
 /* PCH */
 
+#define PCH_DISPLAY_BASE	0xc0000u
+
 /* south display engine interrupt: IBX */
 #define SDE_AUDIO_POWER_D	(1 << 27)
 #define SDE_AUDIO_POWER_C	(1 << 26)
···
 #define SDE_GMBUS_ICP			(1 << 23)
 #define SDE_DDIB_HOTPLUG_ICP		(1 << 17)
 #define SDE_DDIA_HOTPLUG_ICP		(1 << 16)
+#define SDE_TC_HOTPLUG_ICP(tc_port)	(1 << ((tc_port) + 24))
+#define SDE_DDI_HOTPLUG_ICP(port)	(1 << ((port) + 16))
 #define SDE_DDI_MASK_ICP		(SDE_DDIB_HOTPLUG_ICP |	\
 					 SDE_DDIA_HOTPLUG_ICP)
 #define SDE_TC_MASK_ICP			(SDE_TC4_HOTPLUG_ICP |	\
···
 
 #define   ICP_TC_HPD_LONG_DETECT(tc_port)	(2 << (tc_port) * 4)
 #define   ICP_TC_HPD_SHORT_DETECT(tc_port)	(1 << (tc_port) * 4)
-
-#define PCH_GPIOA               _MMIO(0xc5010)
-#define PCH_GPIOB               _MMIO(0xc5014)
-#define PCH_GPIOC               _MMIO(0xc5018)
-#define PCH_GPIOD               _MMIO(0xc501c)
-#define PCH_GPIOE               _MMIO(0xc5020)
-#define PCH_GPIOF               _MMIO(0xc5024)
-
-#define PCH_GMBUS0		_MMIO(0xc5100)
-#define PCH_GMBUS1		_MMIO(0xc5104)
-#define PCH_GMBUS2		_MMIO(0xc5108)
-#define PCH_GMBUS3		_MMIO(0xc510c)
-#define PCH_GMBUS4		_MMIO(0xc5110)
-#define PCH_GMBUS5		_MMIO(0xc5120)
 
 #define _PCH_DPLL_A              0xc6014
 #define _PCH_DPLL_B              0xc6018
···
 #define  GEN6_PM_RP_DOWN_THRESHOLD		(1 << 4)
 #define  GEN6_PM_RP_UP_EI_EXPIRED		(1 << 2)
 #define  GEN6_PM_RP_DOWN_EI_EXPIRED		(1 << 1)
-#define  GEN6_PM_RPS_EVENTS			(GEN6_PM_RP_UP_THRESHOLD | \
-						 GEN6_PM_RP_DOWN_THRESHOLD | \
+#define  GEN6_PM_RPS_EVENTS			(GEN6_PM_RP_UP_EI_EXPIRED   | \
+						 GEN6_PM_RP_UP_THRESHOLD    | \
+						 GEN6_PM_RP_DOWN_EI_EXPIRED | \
+						 GEN6_PM_RP_DOWN_THRESHOLD  | \
 						 GEN6_PM_RP_DOWN_TIMEOUT)
 
 #define GEN7_GT_SCRATCH(i)			_MMIO(0x4F100 + (i) * 4)
···
 #define HSW_AUD_CHICKENBIT			_MMIO(0x65f10)
 #define   SKL_AUD_CODEC_WAKE_SIGNAL		(1 << 15)
 
-/* HSW Power Wells */
-#define _HSW_PWR_WELL_CTL1			0x45400
-#define _HSW_PWR_WELL_CTL2			0x45404
-#define _HSW_PWR_WELL_CTL3			0x45408
-#define _HSW_PWR_WELL_CTL4			0x4540C
-
-#define _ICL_PWR_WELL_CTL_AUX1			0x45440
-#define _ICL_PWR_WELL_CTL_AUX2			0x45444
-#define _ICL_PWR_WELL_CTL_AUX4			0x4544C
-
-#define _ICL_PWR_WELL_CTL_DDI1			0x45450
-#define _ICL_PWR_WELL_CTL_DDI2			0x45454
-#define _ICL_PWR_WELL_CTL_DDI4			0x4545C
-
 /*
- * Each power well control register contains up to 16 (request, status) HW
- * flag tuples. The register index and HW flag shift is determined by the
- * power well ID (see i915_power_well_id). There are 4 possible sources of
- * power well requests each source having its own set of control registers:
- * BIOS, DRIVER, KVMR, DEBUG.
+ * HSW - ICL power wells
+ *
+ * Platforms have up to 3 power well control register sets, each set
+ * controlling up to 16 power wells via a request/status HW flag tuple:
+ * - main (HSW_PWR_WELL_CTL[1-4])
+ * - AUX  (ICL_PWR_WELL_CTL_AUX[1-4])
+ * - DDI  (ICL_PWR_WELL_CTL_DDI[1-4])
+ * Each control register set consists of up to 4 registers used by different
+ * sources that can request a power well to be enabled:
+ * - BIOS   (HSW_PWR_WELL_CTL1/ICL_PWR_WELL_CTL_AUX1/ICL_PWR_WELL_CTL_DDI1)
+ * - DRIVER (HSW_PWR_WELL_CTL2/ICL_PWR_WELL_CTL_AUX2/ICL_PWR_WELL_CTL_DDI2)
+ * - KVMR   (HSW_PWR_WELL_CTL3)   (only in the main register set)
+ * - DEBUG  (HSW_PWR_WELL_CTL4/ICL_PWR_WELL_CTL_AUX4/ICL_PWR_WELL_CTL_DDI4)
  */
-#define _HSW_PW_REG_IDX(pw)			((pw) >> 4)
-#define _HSW_PW_SHIFT(pw)			(((pw) & 0xf) * 2)
-#define HSW_PWR_WELL_CTL_BIOS(pw)	_MMIO(_PICK(_HSW_PW_REG_IDX(pw),       \
-						    _HSW_PWR_WELL_CTL1,	       \
-						    _ICL_PWR_WELL_CTL_AUX1,    \
-						    _ICL_PWR_WELL_CTL_DDI1))
-#define HSW_PWR_WELL_CTL_DRIVER(pw)	_MMIO(_PICK(_HSW_PW_REG_IDX(pw),       \
-						    _HSW_PWR_WELL_CTL2,	       \
-						    _ICL_PWR_WELL_CTL_AUX2,    \
-						    _ICL_PWR_WELL_CTL_DDI2))
-/* KVMR doesn't have a reg for AUX or DDI power well control */
-#define HSW_PWR_WELL_CTL_KVMR		_MMIO(_HSW_PWR_WELL_CTL3)
-#define HSW_PWR_WELL_CTL_DEBUG(pw)	_MMIO(_PICK(_HSW_PW_REG_IDX(pw),       \
-						    _HSW_PWR_WELL_CTL4,	       \
-						    _ICL_PWR_WELL_CTL_AUX4,    \
-						    _ICL_PWR_WELL_CTL_DDI4))
+#define HSW_PWR_WELL_CTL1			_MMIO(0x45400)
+#define HSW_PWR_WELL_CTL2			_MMIO(0x45404)
+#define HSW_PWR_WELL_CTL3			_MMIO(0x45408)
+#define HSW_PWR_WELL_CTL4			_MMIO(0x4540C)
+#define   HSW_PWR_WELL_CTL_REQ(pw_idx)		(0x2 << ((pw_idx) * 2))
+#define   HSW_PWR_WELL_CTL_STATE(pw_idx)	(0x1 << ((pw_idx) * 2))
 
-#define   HSW_PWR_WELL_CTL_REQ(pw)		(1 << (_HSW_PW_SHIFT(pw) + 1))
-#define   HSW_PWR_WELL_CTL_STATE(pw)		(1 << _HSW_PW_SHIFT(pw))
+/* HSW/BDW power well */
+#define   HSW_PW_CTL_IDX_GLOBAL			15
+
+/* SKL/BXT/GLK/CNL power wells */
+#define   SKL_PW_CTL_IDX_PW_2			15
+#define   SKL_PW_CTL_IDX_PW_1			14
+#define   CNL_PW_CTL_IDX_AUX_F			12
+#define   CNL_PW_CTL_IDX_AUX_D			11
+#define   GLK_PW_CTL_IDX_AUX_C			10
+#define   GLK_PW_CTL_IDX_AUX_B			9
+#define   GLK_PW_CTL_IDX_AUX_A			8
+#define   CNL_PW_CTL_IDX_DDI_F			6
+#define   SKL_PW_CTL_IDX_DDI_D			4
+#define   SKL_PW_CTL_IDX_DDI_C			3
+#define   SKL_PW_CTL_IDX_DDI_B			2
+#define   SKL_PW_CTL_IDX_DDI_A_E		1
+#define   GLK_PW_CTL_IDX_DDI_A			1
+#define   SKL_PW_CTL_IDX_MISC_IO		0
+
+/* ICL - power wells */
+#define   ICL_PW_CTL_IDX_PW_4			3
+#define   ICL_PW_CTL_IDX_PW_3			2
+#define   ICL_PW_CTL_IDX_PW_2			1
+#define   ICL_PW_CTL_IDX_PW_1			0
+
+#define ICL_PWR_WELL_CTL_AUX1			_MMIO(0x45440)
+#define ICL_PWR_WELL_CTL_AUX2			_MMIO(0x45444)
+#define ICL_PWR_WELL_CTL_AUX4			_MMIO(0x4544C)
+#define   ICL_PW_CTL_IDX_AUX_TBT4		11
+#define   ICL_PW_CTL_IDX_AUX_TBT3		10
+#define   ICL_PW_CTL_IDX_AUX_TBT2		9
+#define   ICL_PW_CTL_IDX_AUX_TBT1		8
+#define   ICL_PW_CTL_IDX_AUX_F			5
+#define   ICL_PW_CTL_IDX_AUX_E			4
+#define   ICL_PW_CTL_IDX_AUX_D			3
+#define   ICL_PW_CTL_IDX_AUX_C			2
+#define   ICL_PW_CTL_IDX_AUX_B			1
+#define   ICL_PW_CTL_IDX_AUX_A			0
+
+#define ICL_PWR_WELL_CTL_DDI1			_MMIO(0x45450)
+#define ICL_PWR_WELL_CTL_DDI2			_MMIO(0x45454)
+#define ICL_PWR_WELL_CTL_DDI4			_MMIO(0x4545C)
+#define   ICL_PW_CTL_IDX_DDI_F			5
+#define   ICL_PW_CTL_IDX_DDI_E			4
+#define   ICL_PW_CTL_IDX_DDI_D			3
+#define   ICL_PW_CTL_IDX_DDI_C			2
+#define   ICL_PW_CTL_IDX_DDI_B			1
+#define   ICL_PW_CTL_IDX_DDI_A			0
+
+/* HSW - power well misc debug registers */
 #define HSW_PWR_WELL_CTL5			_MMIO(0x45410)
 #define   HSW_PWR_WELL_ENABLE_SINGLE_STEP	(1 << 31)
 #define   HSW_PWR_WELL_PWR_GATE_OVERRIDE	(1 << 20)
···
 	SKL_PG0,
 	SKL_PG1,
 	SKL_PG2,
+	ICL_PG3,
+	ICL_PG4,
 };
 
 #define SKL_FUSE_STATUS				_MMIO(0x42000)
 #define  SKL_FUSE_DOWNLOAD_STATUS		(1 << 31)
-/* PG0 (HW control->no power well ID), PG1..PG2 (SKL_DISP_PW1..SKL_DISP_PW2) */
-#define  SKL_PW_TO_PG(pw)			((pw) - SKL_DISP_PW_1 + SKL_PG1)
-/* PG0 (HW control->no power well ID), PG1..PG4 (ICL_DISP_PW1..ICL_DISP_PW4) */
-#define  ICL_PW_TO_PG(pw)			((pw) - ICL_DISP_PW_1 + SKL_PG1)
+/*
+ * PG0 is HW controlled, so doesn't have a corresponding power well control knob
+ * SKL_DISP_PW1_IDX..SKL_DISP_PW2_IDX -> PG1..PG2
+ */
+#define  SKL_PW_CTL_IDX_TO_PG(pw_idx)		\
+	((pw_idx) - SKL_PW_CTL_IDX_PW_1 + SKL_PG1)
+/*
+ * PG0 is HW controlled, so doesn't have a corresponding power well control knob
+ * ICL_DISP_PW1_IDX..ICL_DISP_PW4_IDX -> PG1..PG4
+ */
+#define  ICL_PW_CTL_IDX_TO_PG(pw_idx)		\
+	((pw_idx) - ICL_PW_CTL_IDX_PW_1 + SKL_PG1)
 #define  SKL_FUSE_PG_DIST_STATUS(pg)		(1 << (27 - (pg)))
 
-#define _CNL_AUX_REG_IDX(pw)		((pw) - 9)
+#define _CNL_AUX_REG_IDX(pw_idx)	((pw_idx) - GLK_PW_CTL_IDX_AUX_B)
 #define _CNL_AUX_ANAOVRD1_B		0x162250
 #define _CNL_AUX_ANAOVRD1_C		0x162210
 #define _CNL_AUX_ANAOVRD1_D		0x1622D0
 #define _CNL_AUX_ANAOVRD1_F		0x162A90
-#define CNL_AUX_ANAOVRD1(pw)		_MMIO(_PICK(_CNL_AUX_REG_IDX(pw), \
+#define CNL_AUX_ANAOVRD1(pw_idx)	_MMIO(_PICK(_CNL_AUX_REG_IDX(pw_idx), \
 						    _CNL_AUX_ANAOVRD1_B, \
 						    _CNL_AUX_ANAOVRD1_C, \
 						    _CNL_AUX_ANAOVRD1_D, \
···
 #define   MG_CLKTOP2_HSCLKCTL_CORE_INPUTSEL_MASK	(0x1 << 16)
 #define   MG_CLKTOP2_HSCLKCTL_TLINEDRV_CLKSEL(x)	((x) << 14)
 #define   MG_CLKTOP2_HSCLKCTL_TLINEDRV_CLKSEL_MASK	(0x3 << 14)
-#define   MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO(x)		((x) << 12)
 #define   MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_MASK		(0x3 << 12)
+#define   MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_2		(0 << 12)
+#define   MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_3		(1 << 12)
+#define   MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_5		(2 << 12)
+#define   MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_7		(3 << 12)
 #define   MG_CLKTOP2_HSCLKCTL_DSDIV_RATIO(x)		((x) << 8)
+#define   MG_CLKTOP2_HSCLKCTL_DSDIV_RATIO_SHIFT		8
 #define   MG_CLKTOP2_HSCLKCTL_DSDIV_RATIO_MASK		(0xf << 8)
 #define MG_CLKTOP2_HSCLKCTL(port) _MMIO_PORT((port) - PORT_C, \
 					     _MG_CLKTOP2_HSCLKCTL_PORT1, \
···
 #define _MG_PLL_DIV0_PORT3				0x16AA00
 #define _MG_PLL_DIV0_PORT4				0x16BA00
 #define   MG_PLL_DIV0_FRACNEN_H				(1 << 30)
+#define   MG_PLL_DIV0_FBDIV_FRAC_MASK			(0x3fffff << 8)
+#define   MG_PLL_DIV0_FBDIV_FRAC_SHIFT			8
 #define   MG_PLL_DIV0_FBDIV_FRAC(x)			((x) << 8)
+#define   MG_PLL_DIV0_FBDIV_INT_MASK			(0xff << 0)
 #define   MG_PLL_DIV0_FBDIV_INT(x)			((x) << 0)
 #define MG_PLL_DIV0(port) _MMIO_PORT((port) - PORT_C, _MG_PLL_DIV0_PORT1, \
 				     _MG_PLL_DIV0_PORT2)
···
 #define   MG_PLL_DIV1_DITHER_DIV_4			(2 << 12)
 #define   MG_PLL_DIV1_DITHER_DIV_8			(3 << 12)
 #define   MG_PLL_DIV1_NDIVRATIO(x)			((x) << 4)
+#define   MG_PLL_DIV1_FBPREDIV_MASK			(0xf << 0)
 #define   MG_PLL_DIV1_FBPREDIV(x)			((x) << 0)
 #define MG_PLL_DIV1(port) _MMIO_PORT((port) - PORT_C, _MG_PLL_DIV1_PORT1, \
 				     _MG_PLL_DIV1_PORT2)
···
 #define  ICL_PHY_MISC_DE_IO_COMP_PWR_DOWN	(1 << 23)
 
 /* Icelake Display Stream Compression Registers */
-#define DSCA_PICTURE_PARAMETER_SET_0		0x6B200
-#define DSCC_PICTURE_PARAMETER_SET_0		0x6BA00
+#define DSCA_PICTURE_PARAMETER_SET_0		_MMIO(0x6B200)
+#define DSCC_PICTURE_PARAMETER_SET_0		_MMIO(0x6BA00)
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_0_PB	0x78270
 #define _ICL_DSC1_PICTURE_PARAMETER_SET_0_PB	0x78370
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_0_PC	0x78470
···
 #define  DSC_VER_MIN_SHIFT		4
 #define  DSC_VER_MAJ			(0x1 << 0)
 
-#define DSCA_PICTURE_PARAMETER_SET_1		0x6B204
-#define DSCC_PICTURE_PARAMETER_SET_1		0x6BA04
+#define DSCA_PICTURE_PARAMETER_SET_1		_MMIO(0x6B204)
+#define DSCC_PICTURE_PARAMETER_SET_1		_MMIO(0x6BA04)
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_1_PB	0x78274
 #define _ICL_DSC1_PICTURE_PARAMETER_SET_1_PB	0x78374
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_1_PC	0x78474
···
 							   _ICL_DSC1_PICTURE_PARAMETER_SET_1_PC)
 #define  DSC_BPP(bpp)				((bpp) << 0)
 
-#define DSCA_PICTURE_PARAMETER_SET_2		0x6B208
-#define DSCC_PICTURE_PARAMETER_SET_2		0x6BA08
+#define DSCA_PICTURE_PARAMETER_SET_2		_MMIO(0x6B208)
+#define DSCC_PICTURE_PARAMETER_SET_2		_MMIO(0x6BA08)
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_2_PB	0x78278
 #define _ICL_DSC1_PICTURE_PARAMETER_SET_2_PB	0x78378
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_2_PC	0x78478
···
 #define  DSC_PIC_WIDTH(pic_width)	((pic_width) << 16)
 #define  DSC_PIC_HEIGHT(pic_height)	((pic_height) << 0)
 
-#define DSCA_PICTURE_PARAMETER_SET_3		0x6B20C
-#define DSCC_PICTURE_PARAMETER_SET_3		0x6BA0C
+#define DSCA_PICTURE_PARAMETER_SET_3		_MMIO(0x6B20C)
+#define DSCC_PICTURE_PARAMETER_SET_3		_MMIO(0x6BA0C)
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_3_PB	0x7827C
 #define _ICL_DSC1_PICTURE_PARAMETER_SET_3_PB	0x7837C
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_3_PC	0x7847C
···
 #define  DSC_SLICE_WIDTH(slice_width)   ((slice_width) << 16)
 #define  DSC_SLICE_HEIGHT(slice_height) ((slice_height) << 0)
 
-#define DSCA_PICTURE_PARAMETER_SET_4		0x6B210
-#define DSCC_PICTURE_PARAMETER_SET_4		0x6BA10
+#define DSCA_PICTURE_PARAMETER_SET_4		_MMIO(0x6B210)
+#define DSCC_PICTURE_PARAMETER_SET_4		_MMIO(0x6BA10)
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_4_PB	0x78280
 #define _ICL_DSC1_PICTURE_PARAMETER_SET_4_PB	0x78380
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_4_PC	0x78480
···
 							   _ICL_DSC0_PICTURE_PARAMETER_SET_4_PB, \
 							   _ICL_DSC0_PICTURE_PARAMETER_SET_4_PC)
 #define ICL_DSC1_PICTURE_PARAMETER_SET_4(pipe)	_MMIO_PIPE((pipe) - PIPE_B, \
-							   _ICL_DSC0_PICTURE_PARAMETER_SET_4_PB, \
+							   _ICL_DSC1_PICTURE_PARAMETER_SET_4_PB, \
 							   _ICL_DSC1_PICTURE_PARAMETER_SET_4_PC)
 #define  DSC_INITIAL_DEC_DELAY(dec_delay)       ((dec_delay) << 16)
 #define  DSC_INITIAL_XMIT_DELAY(xmit_delay)     ((xmit_delay) << 0)
 
-#define DSCA_PICTURE_PARAMETER_SET_5		0x6B214
-#define DSCC_PICTURE_PARAMETER_SET_5		0x6BA14
+#define DSCA_PICTURE_PARAMETER_SET_5		_MMIO(0x6B214)
+#define DSCC_PICTURE_PARAMETER_SET_5		_MMIO(0x6BA14)
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_5_PB	0x78284
 #define _ICL_DSC1_PICTURE_PARAMETER_SET_5_PB	0x78384
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_5_PC	0x78484
···
 							   _ICL_DSC0_PICTURE_PARAMETER_SET_5_PB, \
 							   _ICL_DSC0_PICTURE_PARAMETER_SET_5_PC)
 #define ICL_DSC1_PICTURE_PARAMETER_SET_5(pipe)	_MMIO_PIPE((pipe) - PIPE_B, \
-							   _ICL_DSC1_PICTURE_PARAMETER_SET_5_PC, \
+							   _ICL_DSC1_PICTURE_PARAMETER_SET_5_PB, \
 							   _ICL_DSC1_PICTURE_PARAMETER_SET_5_PC)
-#define  DSC_SCALE_DEC_INTINT(scale_dec)	((scale_dec) << 16)
+#define  DSC_SCALE_DEC_INT(scale_dec)	((scale_dec) << 16)
 #define  DSC_SCALE_INC_INT(scale_inc)		((scale_inc) << 0)
 
-#define DSCA_PICTURE_PARAMETER_SET_6		0x6B218
-#define DSCC_PICTURE_PARAMETER_SET_6		0x6BA18
+#define DSCA_PICTURE_PARAMETER_SET_6		_MMIO(0x6B218)
+#define DSCC_PICTURE_PARAMETER_SET_6		_MMIO(0x6BA18)
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_6_PB	0x78288
 #define _ICL_DSC1_PICTURE_PARAMETER_SET_6_PB	0x78388
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_6_PC	0x78488
···
 #define ICL_DSC1_PICTURE_PARAMETER_SET_6(pipe)	_MMIO_PIPE((pipe) - PIPE_B, \
 							   _ICL_DSC1_PICTURE_PARAMETER_SET_6_PB, \
 							   _ICL_DSC1_PICTURE_PARAMETER_SET_6_PC)
-#define  DSC_FLATNESS_MAX_QP(max_qp)		(qp << 24)
-#define  DSC_FLATNESS_MIN_QP(min_qp)		(qp << 16)
+#define  DSC_FLATNESS_MAX_QP(max_qp)		((max_qp) << 24)
+#define  DSC_FLATNESS_MIN_QP(min_qp)		((min_qp) << 16)
 #define  DSC_FIRST_LINE_BPG_OFFSET(offset)	((offset) << 8)
 #define  DSC_INITIAL_SCALE_VALUE(value)		((value) << 0)
 
-#define DSCA_PICTURE_PARAMETER_SET_7		0x6B21C
-#define DSCC_PICTURE_PARAMETER_SET_7		0x6BA1C
+#define DSCA_PICTURE_PARAMETER_SET_7		_MMIO(0x6B21C)
+#define DSCC_PICTURE_PARAMETER_SET_7		_MMIO(0x6BA1C)
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_7_PB	0x7828C
 #define _ICL_DSC1_PICTURE_PARAMETER_SET_7_PB	0x7838C
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_7_PC	0x7848C
···
 #define  DSC_NFL_BPG_OFFSET(bpg_offset)		((bpg_offset) << 16)
 #define  DSC_SLICE_BPG_OFFSET(bpg_offset)	((bpg_offset) << 0)
 
-#define DSCA_PICTURE_PARAMETER_SET_8		0x6B220
-#define DSCC_PICTURE_PARAMETER_SET_8		0x6BA20
+#define DSCA_PICTURE_PARAMETER_SET_8		_MMIO(0x6B220)
+#define DSCC_PICTURE_PARAMETER_SET_8		_MMIO(0x6BA20)
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_8_PB	0x78290
 #define _ICL_DSC1_PICTURE_PARAMETER_SET_8_PB	0x78390
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_8_PC	0x78490
···
 #define  DSC_INITIAL_OFFSET(initial_offset)		((initial_offset) << 16)
 #define  DSC_FINAL_OFFSET(final_offset)			((final_offset) << 0)
 
-#define DSCA_PICTURE_PARAMETER_SET_9		0x6B224
-#define DSCC_PICTURE_PARAMETER_SET_9		0x6BA24
+#define DSCA_PICTURE_PARAMETER_SET_9		_MMIO(0x6B224)
+#define DSCC_PICTURE_PARAMETER_SET_9		_MMIO(0x6BA24)
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_9_PB	0x78294
 #define _ICL_DSC1_PICTURE_PARAMETER_SET_9_PB	0x78394
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_9_PC	0x78494
···
 #define  DSC_RC_EDGE_FACTOR(rc_edge_fact)	((rc_edge_fact) << 16)
 #define  DSC_RC_MODEL_SIZE(rc_model_size)	((rc_model_size) << 0)
 
-#define DSCA_PICTURE_PARAMETER_SET_10		0x6B228
-#define DSCC_PICTURE_PARAMETER_SET_10		0x6BA28
+#define DSCA_PICTURE_PARAMETER_SET_10		_MMIO(0x6B228)
+#define DSCC_PICTURE_PARAMETER_SET_10		_MMIO(0x6BA28)
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_10_PB	0x78298
 #define _ICL_DSC1_PICTURE_PARAMETER_SET_10_PB	0x78398
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_10_PC	0x78498
···
 #define  DSC_RC_QUANT_INC_LIMIT1(lim)			((lim) << 8)
 #define  DSC_RC_QUANT_INC_LIMIT0(lim)			((lim) << 0)
 
-#define DSCA_PICTURE_PARAMETER_SET_11		0x6B22C
-#define DSCC_PICTURE_PARAMETER_SET_11		0x6BA2C
+#define DSCA_PICTURE_PARAMETER_SET_11		_MMIO(0x6B22C)
+#define DSCC_PICTURE_PARAMETER_SET_11		_MMIO(0x6BA2C)
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_11_PB	0x7829C
 #define _ICL_DSC1_PICTURE_PARAMETER_SET_11_PB	0x7839C
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_11_PC	0x7849C
···
 							   _ICL_DSC1_PICTURE_PARAMETER_SET_11_PB, \
 							   _ICL_DSC1_PICTURE_PARAMETER_SET_11_PC)
 
-#define DSCA_PICTURE_PARAMETER_SET_12		0x6B260
-#define DSCC_PICTURE_PARAMETER_SET_12		0x6BA60
+#define DSCA_PICTURE_PARAMETER_SET_12		_MMIO(0x6B260)
+#define DSCC_PICTURE_PARAMETER_SET_12		_MMIO(0x6BA60)
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_12_PB	0x782A0
 #define _ICL_DSC1_PICTURE_PARAMETER_SET_12_PB	0x783A0
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_12_PC	0x784A0
···
 							   _ICL_DSC1_PICTURE_PARAMETER_SET_12_PB, \
 							   _ICL_DSC1_PICTURE_PARAMETER_SET_12_PC)
 
-#define DSCA_PICTURE_PARAMETER_SET_13		0x6B264
-#define DSCC_PICTURE_PARAMETER_SET_13		0x6BA64
+#define DSCA_PICTURE_PARAMETER_SET_13		_MMIO(0x6B264)
+#define DSCC_PICTURE_PARAMETER_SET_13		_MMIO(0x6BA64)
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_13_PB	0x782A4
 #define _ICL_DSC1_PICTURE_PARAMETER_SET_13_PB	0x783A4
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_13_PC	0x784A4
···
 							   _ICL_DSC1_PICTURE_PARAMETER_SET_13_PB, \
 							   _ICL_DSC1_PICTURE_PARAMETER_SET_13_PC)
 
-#define DSCA_PICTURE_PARAMETER_SET_14		0x6B268
-#define DSCC_PICTURE_PARAMETER_SET_14		0x6BA68
+#define DSCA_PICTURE_PARAMETER_SET_14		_MMIO(0x6B268)
+#define DSCC_PICTURE_PARAMETER_SET_14		_MMIO(0x6BA68)
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_14_PB	0x782A8
 #define _ICL_DSC1_PICTURE_PARAMETER_SET_14_PB	0x783A8
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_14_PC	0x784A8
···
 							   _ICL_DSC1_PICTURE_PARAMETER_SET_14_PB, \
 							   _ICL_DSC1_PICTURE_PARAMETER_SET_14_PC)
 
-#define DSCA_PICTURE_PARAMETER_SET_15		0x6B26C
-#define DSCC_PICTURE_PARAMETER_SET_15		0x6BA6C
+#define DSCA_PICTURE_PARAMETER_SET_15		_MMIO(0x6B26C)
+#define DSCC_PICTURE_PARAMETER_SET_15		_MMIO(0x6BA6C)
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_15_PB	0x782AC
 #define _ICL_DSC1_PICTURE_PARAMETER_SET_15_PB	0x783AC
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_15_PC	0x784AC
···
 							   _ICL_DSC1_PICTURE_PARAMETER_SET_15_PB, \
 							   _ICL_DSC1_PICTURE_PARAMETER_SET_15_PC)
 
-#define DSCA_PICTURE_PARAMETER_SET_16		0x6B270
-#define DSCC_PICTURE_PARAMETER_SET_16		0x6BA70
+#define DSCA_PICTURE_PARAMETER_SET_16		_MMIO(0x6B270)
+#define DSCC_PICTURE_PARAMETER_SET_16		_MMIO(0x6BA70)
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_16_PB	0x782B0
 #define _ICL_DSC1_PICTURE_PARAMETER_SET_16_PB	0x783B0
 #define _ICL_DSC0_PICTURE_PARAMETER_SET_16_PC	0x784B0
···
 							   _ICL_DSC1_PICTURE_PARAMETER_SET_16_PB, \
 							   _ICL_DSC1_PICTURE_PARAMETER_SET_16_PC)
 #define  DSC_SLICE_PER_LINE(slice_per_line)		((slice_per_line) << 16)
-#define  DSC_SLICE_CHUNK_SIZE(slice_chunk_aize)		(slice_chunk_size << 0)
+#define  DSC_SLICE_CHUNK_SIZE(slice_chunk_size)		((slice_chunk_size) << 0)
 
 /* Icelake Rate Control Buffer Threshold Registers */
 #define DSCA_RC_BUF_THRESH_0			_MMIO(0x6B230)
···
 #define ICL_DSC1_RC_BUF_THRESH_1_UDW(pipe)	_MMIO_PIPE((pipe) - PIPE_B, \
 						_ICL_DSC1_RC_BUF_THRESH_1_UDW_PB, \
 						_ICL_DSC1_RC_BUF_THRESH_1_UDW_PC)
+
+#define PORT_TX_DFLEXDPSP			_MMIO(0x1638A0)
+#define   TC_LIVE_STATE_TBT(tc_port)		(1 << ((tc_port) * 8 + 6))
+#define   TC_LIVE_STATE_TC(tc_port)		(1 << ((tc_port) * 8 + 5))
+#define   DP_LANE_ASSIGNMENT_SHIFT(tc_port)	((tc_port) * 8)
+#define   DP_LANE_ASSIGNMENT_MASK(tc_port)	(0xf << ((tc_port) * 8))
+#define   DP_LANE_ASSIGNMENT(tc_port, x)	((x) << ((tc_port) * 8))
+
+#define PORT_TX_DFLEXDPPMS				_MMIO(0x163890)
+#define   DP_PHY_MODE_STATUS_COMPLETED(tc_port)		(1 << (tc_port))
+
+#define PORT_TX_DFLEXDPCSSS				_MMIO(0x163894)
+#define   DP_PHY_MODE_STATUS_NOT_SAFE(tc_port)		(1 << (tc_port))
 
 #endif /* _I915_REG_H_ */

drivers/gpu/drm/i915/i915_request.c

···
 
 	seqno = timeline_get_seqno(&engine->timeline);
 	GEM_BUG_ON(!seqno);
-	GEM_BUG_ON(i915_seqno_passed(intel_engine_get_seqno(engine), seqno));
+	GEM_BUG_ON(intel_engine_signaled(engine, seqno));
 
 	/* We may be recursing from the signal callback of another i915 fence */
 	spin_lock_nested(&request->lock, SINGLE_DEPTH_NESTING);
···
 	 */
 	GEM_BUG_ON(!request->global_seqno);
 	GEM_BUG_ON(request->global_seqno != engine->timeline.seqno);
-	GEM_BUG_ON(i915_seqno_passed(intel_engine_get_seqno(engine),
-				     request->global_seqno));
+	GEM_BUG_ON(intel_engine_has_completed(engine, request->global_seqno));
 	engine->timeline.seqno--;
 
 	/* We may be recursing from the signal callback of another i915 fence */
···
 	 * it is a fair assumption that it will not complete within our
 	 * relatively short timeout.
 	 */
-	if (!i915_seqno_passed(intel_engine_get_seqno(engine), seqno - 1))
+	if (!intel_engine_has_started(engine, seqno))
 		return false;
 
 	/*
···
 	irq = READ_ONCE(engine->breadcrumbs.irq_count);
 	timeout_us += local_clock_us(&cpu);
 	do {
-		if (i915_seqno_passed(intel_engine_get_seqno(engine), seqno))
+		if (intel_engine_has_completed(engine, seqno))
 			return seqno == i915_request_global_seqno(rq);
 
 		/*

drivers/gpu/drm/i915/i915_request.h

···
 #define I915_WAIT_ALL		BIT(2) /* used by i915_gem_object_wait() */
 #define I915_WAIT_FOR_IDLE_BOOST BIT(3)
 
-static inline u32 intel_engine_get_seqno(struct intel_engine_cs *engine);
+static inline bool intel_engine_has_started(struct intel_engine_cs *engine,
+					    u32 seqno);
+static inline bool intel_engine_has_completed(struct intel_engine_cs *engine,
+					      u32 seqno);
 
 /**
  * Returns true if seq1 is later than seq2.
···
 	return (s32)(seq1 - seq2) >= 0;
 }
 
+/**
+ * i915_request_started - check if the request has begun being executed
+ * @rq: the request
+ *
+ * Returns true if the request has been submitted to hardware, and the hardware
+ * has advanced passed the end of the previous request and so should be either
+ * currently processing the request (though it may be preempted and so
+ * not necessarily the next request to complete) or have completed the request.
+ */
+static inline bool i915_request_started(const struct i915_request *rq)
+{
+	u32 seqno;
+
+	seqno = i915_request_global_seqno(rq);
+	if (!seqno) /* not yet submitted to HW */
+		return false;
+
+	return intel_engine_has_started(rq->engine, seqno);
+}
+
 static inline bool
 __i915_request_completed(const struct i915_request *rq, u32 seqno)
 {
 	GEM_BUG_ON(!seqno);
-	return i915_seqno_passed(intel_engine_get_seqno(rq->engine), seqno) &&
+	return intel_engine_has_completed(rq->engine, seqno) &&
 		seqno == i915_request_global_seqno(rq);
 }
 
···
 		return false;
 
 	return __i915_request_completed(rq, seqno);
-}
-
-static inline bool i915_request_started(const struct i915_request *rq)
-{
-	u32 seqno;
-
-	seqno = i915_request_global_seqno(rq);
-	if (!seqno)
-		return false;
-
-	return i915_seqno_passed(intel_engine_get_seqno(rq->engine),
-				 seqno - 1);
 }
 
 static inline bool i915_sched_node_signaled(const struct i915_sched_node *node)

drivers/gpu/drm/i915/i915_vma.c

···
 	i915_vma_unpin(vma);
 }
 
-void i915_vma_unpin_and_release(struct i915_vma **p_vma)
+void i915_vma_unpin_and_release(struct i915_vma **p_vma, unsigned int flags)
 {
 	struct i915_vma *vma;
 	struct drm_i915_gem_object *obj;
···
 
 	i915_vma_unpin(vma);
 	i915_vma_close(vma);
+
+	if (flags & I915_VMA_RELEASE_MAP)
+		i915_gem_object_unpin_map(obj);
 
 	__i915_gem_object_release_unless_active(obj);
 }

drivers/gpu/drm/i915/i915_vma.h

···
 		  struct i915_address_space *vm,
 		  const struct i915_ggtt_view *view);
 
-void i915_vma_unpin_and_release(struct i915_vma **p_vma);
+void i915_vma_unpin_and_release(struct i915_vma **p_vma, unsigned int flags);
+#define I915_VMA_RELEASE_MAP BIT(0)
 
 static inline bool i915_vma_is_active(struct i915_vma *vma)
 {
···
 	return lower_32_bits(vma->node.start);
 }
 
+static inline u32 i915_ggtt_pin_bias(struct i915_vma *vma)
+{
+	return i915_vm_to_ggtt(vma->vm)->pin_bias;
+}
+
 static inline struct i915_vma *i915_vma_get(struct i915_vma *vma)
 {
 	i915_gem_object_get(vma->obj);
···
 	cmp -= view->type;
 	if (cmp)
 		return cmp;
+
+	assert_i915_gem_gtt_types();
 
 	/* ggtt_view.type also encodes its size so that we both distinguish
 	 * different views using it as a "type" and also use a compact (no

drivers/gpu/drm/i915/intel_atomic_plane.c

···
 	}
 
 	intel_state->base.visible = false;
-	ret = intel_plane->check_plane(intel_plane, crtc_state, intel_state);
+	ret = intel_plane->check_plane(crtc_state, intel_state);
 	if (ret)
 		return ret;
 
···
 	if (state->fb && INTEL_GEN(dev_priv) >= 9 && crtc_state->base.enable &&
 	    adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
 		if (state->fb->modifier == I915_FORMAT_MOD_Y_TILED ||
-		    state->fb->modifier == I915_FORMAT_MOD_Yf_TILED) {
+		    state->fb->modifier == I915_FORMAT_MOD_Yf_TILED ||
+		    state->fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
+		    state->fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS) {
 			DRM_DEBUG_KMS("Y/Yf tiling not supported in IF-ID mode\n");
 			return -EINVAL;
 		}

drivers/gpu/drm/i915/intel_breadcrumbs.c

···
 	spin_unlock(&b->irq_lock);
 
 	rbtree_postorder_for_each_entry_safe(wait, n, &b->waiters, node) {
-		GEM_BUG_ON(!i915_seqno_passed(intel_engine_get_seqno(engine),
-					      wait->seqno));
+		GEM_BUG_ON(!intel_engine_signaled(engine, wait->seqno));
 		RB_CLEAR_NODE(&wait->node);
 		wake_up_process(wait->tsk);
 	}
···
 		return armed;
 
 	/* Make the caller recheck if its request has already started. */
-	return i915_seqno_passed(intel_engine_get_seqno(engine),
-				 wait->seqno - 1);
+	return intel_engine_has_started(engine, wait->seqno);
 }
 
 static inline bool chain_wakeup(struct rb_node *rb, int priority)

drivers/gpu/drm/i915/intel_csr.c

···
 #define BXT_CSR_VERSION_REQUIRED	CSR_VERSION(1, 7)
 
 
-#define CSR_MAX_FW_SIZE			0x2FFF
+#define BXT_CSR_MAX_FW_SIZE		0x3000
+#define GLK_CSR_MAX_FW_SIZE		0x4000
+#define ICL_CSR_MAX_FW_SIZE		0x6000
 #define CSR_DEFAULT_FW_OFFSET		0xFFFFFFFF
 
 struct intel_css_header {
···
 	struct intel_csr *csr = &dev_priv->csr;
 	const struct stepping_info *si = intel_get_stepping_info(dev_priv);
 	uint32_t dmc_offset = CSR_DEFAULT_FW_OFFSET, readcount = 0, nbytes;
+	uint32_t max_fw_size = 0;
 	uint32_t i;
 	uint32_t *dmc_payload;
 	uint32_t required_version;
···
 			  si->stepping);
 		return NULL;
 	}
+	/* Convert dmc_offset into number of bytes. By default it is in dwords*/
+	dmc_offset *= 4;
 	readcount += dmc_offset;
 
 	/* Extract dmc_header information. */
···
 
 	/* fw_size is in dwords, so multiplied by 4 to convert into bytes. */
 	nbytes = dmc_header->fw_size * 4;
-	if (nbytes > CSR_MAX_FW_SIZE) {
-		DRM_ERROR("DMC firmware too big (%u bytes)\n", nbytes);
+	if (INTEL_GEN(dev_priv) >= 11)
+		max_fw_size = ICL_CSR_MAX_FW_SIZE;
+	else if (IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv))
+		max_fw_size = GLK_CSR_MAX_FW_SIZE;
+	else if (IS_GEN9(dev_priv))
+		max_fw_size = BXT_CSR_MAX_FW_SIZE;
+	else
+		MISSING_CASE(INTEL_REVID(dev_priv));
+	if (nbytes > max_fw_size) {
+		DRM_ERROR("DMC FW too big (%u bytes)\n", nbytes);
 		return NULL;
 	}
 	csr->dmc_fw_size = dmc_header->fw_size;
···
 		csr->fw_path = I915_CSR_SKL;
 	else if (IS_BROXTON(dev_priv))
 		csr->fw_path = I915_CSR_BXT;
-	else {
-		DRM_ERROR("Unexpected: no known CSR firmware for platform\n");
-		return;
-	}
-
-	DRM_DEBUG_KMS("Loading %s\n", csr->fw_path);
 
 	/*
 	 * Obtain a runtime pm reference, until CSR is loaded,
···
 	 */
 	intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
 
+	if (csr->fw_path == NULL) {
+		DRM_DEBUG_KMS("No known CSR firmware for platform, disabling runtime PM\n");
+		WARN_ON(!IS_ALPHA_SUPPORT(INTEL_INFO(dev_priv)));
+
+		return;
+	}
+
+	DRM_DEBUG_KMS("Loading %s\n", csr->fw_path);
 	schedule_work(&dev_priv->csr.work);
 }
 

drivers/gpu/drm/i915/intel_ddi.c

···
 		break;
 	}
 
-	ref_clock = dev_priv->cdclk.hw.ref;
+	ref_clock = cnl_hdmi_pll_ref_clock(dev_priv);
 
 	dco_freq = (cfgcr0 & DPLL_CFGCR0_DCO_INTEGER_MASK) * ref_clock;
 
···
 		return 0;
 
 	return dco_freq / (p0 * p1 * p2 * 5);
+}
+
+static int icl_calc_tbt_pll_link(struct drm_i915_private *dev_priv,
+				 enum port port)
+{
+	u32 val = I915_READ(DDI_CLK_SEL(port)) & DDI_CLK_SEL_MASK;
+
+	switch (val) {
+	case DDI_CLK_SEL_NONE:
+		return 0;
+	case DDI_CLK_SEL_TBT_162:
+		return 162000;
+	case DDI_CLK_SEL_TBT_270:
+		return 270000;
+	case DDI_CLK_SEL_TBT_540:
+		return 540000;
+	case DDI_CLK_SEL_TBT_810:
+		return 810000;
+	default:
+		MISSING_CASE(val);
+		return 0;
+	}
+}
+
+static int icl_calc_mg_pll_link(struct drm_i915_private *dev_priv,
+				enum port port)
+{
+	u32 mg_pll_div0, mg_clktop_hsclkctl;
+	u32 m1, m2_int, m2_frac, div1, div2, refclk;
+	u64 tmp;
+
+	refclk = dev_priv->cdclk.hw.ref;
+
+	mg_pll_div0 = I915_READ(MG_PLL_DIV0(port));
+	mg_clktop_hsclkctl = I915_READ(MG_CLKTOP2_HSCLKCTL(port));
+
+	m1 = I915_READ(MG_PLL_DIV1(port)) & MG_PLL_DIV1_FBPREDIV_MASK;
+	m2_int = mg_pll_div0 & MG_PLL_DIV0_FBDIV_INT_MASK;
+	m2_frac = (mg_pll_div0 & MG_PLL_DIV0_FRACNEN_H) ?
+		  (mg_pll_div0 & MG_PLL_DIV0_FBDIV_FRAC_MASK) >>
+		  MG_PLL_DIV0_FBDIV_FRAC_SHIFT : 0;
+
+	switch (mg_clktop_hsclkctl & MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_MASK) {
+	case MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_2:
+		div1 = 2;
+		break;
+	case MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_3:
+		div1 = 3;
+		break;
+	case MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_5:
+		div1 = 5;
+		break;
+	case MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_7:
+		div1 = 7;
+		break;
+	default:
+		MISSING_CASE(mg_clktop_hsclkctl);
+		return 0;
+	}
+
+	div2 = (mg_clktop_hsclkctl & MG_CLKTOP2_HSCLKCTL_DSDIV_RATIO_MASK) >>
+		MG_CLKTOP2_HSCLKCTL_DSDIV_RATIO_SHIFT;
+	/* div2 value of 0 is same as 1 means no div */
+	if (div2 == 0)
+		div2 = 1;
+
+	/*
+	 * Adjust the original formula to delay the division by 2^22 in order to
+	 * minimize possible rounding errors.
+	 */
+	tmp = (u64)m1 * m2_int * refclk +
+	      (((u64)m1 * m2_frac * refclk) >> 22);
+	tmp = div_u64(tmp, 5 * div1 * div2);
+
+	return tmp;
 }
 
 static void ddi_dotclock_get(struct intel_crtc_state *pipe_config)
···
 			link_clock = icl_calc_dp_combo_pll_link(dev_priv,
 								pll_id);
 	} else {
-		/* FIXME - Add for MG PLL */
-		WARN(1, "MG PLL clock_get code not implemented yet\n");
+		if (pll_id == DPLL_ID_ICL_TBTPLL)
+			link_clock = icl_calc_tbt_pll_link(dev_priv, port);
+		else
+			link_clock = icl_calc_mg_pll_link(dev_priv, port);
 	}
 
 	pipe_config->port_clock = link_clock;
···
 	I915_WRITE(ICL_PORT_TX_DW5_GRP(port), val);
 }
 
-static void icl_ddi_vswing_sequence(struct intel_encoder *encoder, u32 level,
+static void icl_mg_phy_ddi_vswing_sequence(struct intel_encoder *encoder,
+					   int link_clock,
+					   u32 level)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum port port = encoder->port;
+	const struct icl_mg_phy_ddi_buf_trans *ddi_translations;
+	u32 n_entries, val;
+	int ln;
+
+	n_entries = ARRAY_SIZE(icl_mg_phy_ddi_translations);
+	ddi_translations = icl_mg_phy_ddi_translations;
+	/* The table does not have values for level 3 and level 9. */
+	if (level >= n_entries || level == 3 || level == 9) {
+		DRM_DEBUG_KMS("DDI translation not found for level %d. Using %d instead.",
+			      level, n_entries - 2);
+		level = n_entries - 2;
+	}
+
+	/* Set MG_TX_LINK_PARAMS cri_use_fs32 to 0. */
+	for (ln = 0; ln < 2; ln++) {
+		val = I915_READ(MG_TX1_LINK_PARAMS(port, ln));
+		val &= ~CRI_USE_FS32;
+		I915_WRITE(MG_TX1_LINK_PARAMS(port, ln), val);
+
+		val = I915_READ(MG_TX2_LINK_PARAMS(port, ln));
+		val &= ~CRI_USE_FS32;
+		I915_WRITE(MG_TX2_LINK_PARAMS(port, ln), val);
+	}
+
+	/* Program MG_TX_SWINGCTRL with values from vswing table */
+	for (ln = 0; ln < 2; ln++) {
+		val = I915_READ(MG_TX1_SWINGCTRL(port, ln));
+		val &= ~CRI_TXDEEMPH_OVERRIDE_17_12_MASK;
+		val |= CRI_TXDEEMPH_OVERRIDE_17_12(
+			ddi_translations[level].cri_txdeemph_override_17_12);
+		I915_WRITE(MG_TX1_SWINGCTRL(port, ln), val);
+
+		val = I915_READ(MG_TX2_SWINGCTRL(port, ln));
+		val &= ~CRI_TXDEEMPH_OVERRIDE_17_12_MASK;
+		val |= CRI_TXDEEMPH_OVERRIDE_17_12(
+			ddi_translations[level].cri_txdeemph_override_17_12);
+		I915_WRITE(MG_TX2_SWINGCTRL(port, ln), val);
+	}
+
+	/* Program MG_TX_DRVCTRL with values from vswing table */
+	for (ln = 0; ln < 2; ln++) {
+		val = I915_READ(MG_TX1_DRVCTRL(port, ln));
+		val &= ~(CRI_TXDEEMPH_OVERRIDE_11_6_MASK |
+			 CRI_TXDEEMPH_OVERRIDE_5_0_MASK);
+		val |= CRI_TXDEEMPH_OVERRIDE_5_0(
+			ddi_translations[level].cri_txdeemph_override_5_0) |
+			CRI_TXDEEMPH_OVERRIDE_11_6(
+				ddi_translations[level].cri_txdeemph_override_11_6) |
+			CRI_TXDEEMPH_OVERRIDE_EN;
+		I915_WRITE(MG_TX1_DRVCTRL(port, ln), val);
+
+		val = I915_READ(MG_TX2_DRVCTRL(port, ln));
+		val &= ~(CRI_TXDEEMPH_OVERRIDE_11_6_MASK |
+			 CRI_TXDEEMPH_OVERRIDE_5_0_MASK);
+		val |= CRI_TXDEEMPH_OVERRIDE_5_0(
+			ddi_translations[level].cri_txdeemph_override_5_0) |
+			CRI_TXDEEMPH_OVERRIDE_11_6(
+				ddi_translations[level].cri_txdeemph_override_11_6) |
+			CRI_TXDEEMPH_OVERRIDE_EN;
+		I915_WRITE(MG_TX2_DRVCTRL(port, ln), val);
+
+		/* FIXME: Program CRI_LOADGEN_SEL after the spec is updated */
+	}
+
+	/*
+	 * Program MG_CLKHUB<LN, port being used> with value from frequency table
+	 * In case of Legacy mode on MG PHY, both TX1 and TX2 enabled so use the
+	 * values from table for which TX1 and TX2 enabled.
+	 */
+	for (ln = 0; ln < 2; ln++) {
+		val = I915_READ(MG_CLKHUB(port, ln));
+		if (link_clock < 300000)
+			val |= CFG_LOW_RATE_LKREN_EN;
+		else
+			val &= ~CFG_LOW_RATE_LKREN_EN;
+		I915_WRITE(MG_CLKHUB(port, ln), val);
+	}
+
+	/* Program the MG_TX_DCC<LN, port being used> based on the link frequency */
+	for (ln = 0; ln < 2; ln++) {
+		val = I915_READ(MG_TX1_DCC(port, ln));
+		val &= ~CFG_AMI_CK_DIV_OVERRIDE_VAL_MASK;
+		if (link_clock <= 500000) {
+			val &= ~CFG_AMI_CK_DIV_OVERRIDE_EN;
+		} else {
+			val |= CFG_AMI_CK_DIV_OVERRIDE_EN |
+				CFG_AMI_CK_DIV_OVERRIDE_VAL(1);
+		}
+		I915_WRITE(MG_TX1_DCC(port, ln), val);
+
+		val = I915_READ(MG_TX2_DCC(port, ln));
+		val &= ~CFG_AMI_CK_DIV_OVERRIDE_VAL_MASK;
+		if (link_clock <= 500000) {
+			val &= ~CFG_AMI_CK_DIV_OVERRIDE_EN;
+		} else {
+			val |= CFG_AMI_CK_DIV_OVERRIDE_EN |
+				CFG_AMI_CK_DIV_OVERRIDE_VAL(1);
+		}
+		I915_WRITE(MG_TX2_DCC(port, ln), val);
+	}
+
+	/* Program MG_TX_PISO_READLOAD with values from vswing table */
+	for (ln = 0; ln < 2; ln++) {
+		val = I915_READ(MG_TX1_PISO_READLOAD(port, ln));
+		val |= CRI_CALCINIT;
+		I915_WRITE(MG_TX1_PISO_READLOAD(port, ln), val);
+
+		val = I915_READ(MG_TX2_PISO_READLOAD(port, ln));
+		val |= CRI_CALCINIT;
+		I915_WRITE(MG_TX2_PISO_READLOAD(port, ln), val);
+	}
+}
+
+static void icl_ddi_vswing_sequence(struct intel_encoder *encoder,
+				    int link_clock,
+				    u32 level,
 				    enum intel_output_type type)
 {
 	enum port port = encoder->port;
···
 	if (port == PORT_A || port == PORT_B)
 		icl_combo_phy_ddi_vswing_sequence(encoder, level, type);
 	else
-		/* Not Implemented Yet */
-		WARN_ON(1);
+		icl_mg_phy_ddi_vswing_sequence(encoder, link_clock, level);
 }
 
 static uint32_t translate_signal_level(int signal_levels)
···
 	int level = intel_ddi_dp_level(intel_dp);
 
 	if (IS_ICELAKE(dev_priv))
-		icl_ddi_vswing_sequence(encoder, level, encoder->type);
+		icl_ddi_vswing_sequence(encoder, intel_dp->link_rate,
+					level, encoder->type);
 	else if (IS_CANNONLAKE(dev_priv))
 		cnl_ddi_vswing_sequence(encoder, level, encoder->type);
 	else
···
 
 	intel_display_power_get(dev_priv, dig_port->ddi_io_power_domain);
 
+	icl_program_mg_dp_mode(intel_dp);
+	icl_disable_phy_clock_gating(dig_port);
+
 	if (IS_ICELAKE(dev_priv))
-		icl_ddi_vswing_sequence(encoder, level, encoder->type);
+		icl_ddi_vswing_sequence(encoder, crtc_state->port_clock,
+					level, encoder->type);
 	else if (IS_CANNONLAKE(dev_priv))
 		cnl_ddi_vswing_sequence(encoder, level, encoder->type);
 	else if (IS_GEN9_LP(dev_priv))
···
 	if (port != PORT_A || INTEL_GEN(dev_priv) >= 9)
 		intel_dp_stop_link_train(intel_dp);
 
-	intel_ddi_enable_pipe_clock(crtc_state);
+	icl_enable_phy_clock_gating(dig_port);
+
+	if (!is_mst)
+		intel_ddi_enable_pipe_clock(crtc_state);
 }
 
 static void intel_ddi_pre_enable_hdmi(struct intel_encoder *encoder,
···
 	intel_display_power_get(dev_priv, dig_port->ddi_io_power_domain);
 
 	if (IS_ICELAKE(dev_priv))
-		icl_ddi_vswing_sequence(encoder, level, INTEL_OUTPUT_HDMI);
+		icl_ddi_vswing_sequence(encoder, crtc_state->port_clock,
+					level, INTEL_OUTPUT_HDMI);
 	else if (IS_CANNONLAKE(dev_priv))
 		cnl_ddi_vswing_sequence(encoder, level, INTEL_OUTPUT_HDMI);
 	else if (IS_GEN9_LP(dev_priv))
···
 	bool is_mst = intel_crtc_has_type(old_crtc_state,
 					  INTEL_OUTPUT_DP_MST);
 
-	intel_ddi_disable_pipe_clock(old_crtc_state);
-
-	/*
-	 * Power down sink before disabling the port, otherwise we end
-	 * up getting interrupts from the sink on detecting link loss.
-	 */
-	if (!is_mst)
+	if (!is_mst) {
+		intel_ddi_disable_pipe_clock(old_crtc_state);
+		/*
+		 * Power down sink before disabling the port, otherwise we end
+		 * up getting interrupts from the sink on detecting link loss.
+		 */
 		intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF);
+	}
 
 	intel_disable_ddi_buf(encoder);
 

drivers/gpu/drm/i915/intel_device_info.h

···
 	func(has_psr); \
 	func(has_rc6); \
 	func(has_rc6p); \
-	func(has_resource_streamer); \
 	func(has_runtime_pm); \
 	func(has_snoop); \
+	func(has_coherent_ggtt); \
 	func(unfenced_needs_alignment); \
 	func(cursor_needs_physical); \
 	func(hws_needs_physical); \

drivers/gpu/drm/i915/intel_display.c

···
 	}
 }
 
+bool is_ccs_modifier(u64 modifier)
+{
+	return modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
+	       modifier == I915_FORMAT_MOD_Yf_TILED_CCS;
+}
+
 static int
 intel_fill_fb_info(struct drm_i915_private *dev_priv,
 		   struct drm_framebuffer *fb)
···
 			return ret;
 		}
 
-		if ((fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
-		     fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS) && i == 1) {
+		if (is_ccs_modifier(fb->modifier) && i == 1) {
 			int hsub = fb->format->hsub;
 			int vsub = fb->format->vsub;
 			int tile_width, tile_height;
···
 	 * CCS AUX surface doesn't have its own x/y offsets, we must make sure
 	 * they match with the main surface x/y offsets.
 	 */
-	if (fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
-	    fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS) {
+	if (is_ccs_modifier(fb->modifier)) {
 		while (!skl_check_main_ccs_coordinates(plane_state, x, y, offset)) {
 			if (offset == 0)
 				break;
···
 		ret = skl_check_nv12_aux_surface(plane_state);
 		if (ret)
 			return ret;
-	} else if (fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
-		   fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS) {
+	} else if (is_ccs_modifier(fb->modifier)) {
 		ret = skl_check_ccs_aux_surface(plane_state);
 		if (ret)
 			return ret;
···
 	case I915_FORMAT_MOD_Y_TILED:
 		return PLANE_CTL_TILED_Y;
 	case I915_FORMAT_MOD_Y_TILED_CCS:
-		return PLANE_CTL_TILED_Y | PLANE_CTL_DECOMPRESSION_ENABLE;
+		return PLANE_CTL_TILED_Y | PLANE_CTL_RENDER_DECOMPRESSION_ENABLE;
 	case I915_FORMAT_MOD_Yf_TILED:
 		return PLANE_CTL_TILED_YF;
 	case I915_FORMAT_MOD_Yf_TILED_CCS:
-		return PLANE_CTL_TILED_YF | PLANE_CTL_DECOMPRESSION_ENABLE;
+		return PLANE_CTL_TILED_YF | PLANE_CTL_RENDER_DECOMPRESSION_ENABLE;
 	default:
 		MISSING_CASE(fb_modifier);
 	}
···
 		mutex_lock(&dev_priv->pcu_lock);
 		WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0));
 		mutex_unlock(&dev_priv->pcu_lock);
-		/* wait for pcode to finish disabling IPS, which may take up to 42ms */
+		/*
+		 * Wait for PCODE to finish disabling IPS. The BSpec specified
+		 * 42ms timeout value leads to occasional timeouts so use 100ms
+		 * instead.
+		 */
 		if (intel_wait_for_register(dev_priv,
 					    IPS_CTL, IPS_ENABLE, 0,
-					    42))
+					    100))
 			DRM_ERROR("Timed out waiting for IPS disable\n");
 	} else {
 		I915_WRITE(IPS_CTL, 0);
···
 		fb->modifier = I915_FORMAT_MOD_X_TILED;
 		break;
 	case PLANE_CTL_TILED_Y:
-		if (val & PLANE_CTL_DECOMPRESSION_ENABLE)
+		if (val & PLANE_CTL_RENDER_DECOMPRESSION_ENABLE)
 			fb->modifier = I915_FORMAT_MOD_Y_TILED_CCS;
 		else
 			fb->modifier = I915_FORMAT_MOD_Y_TILED;
 		break;
 	case PLANE_CTL_TILED_YF:
-		if (val & PLANE_CTL_DECOMPRESSION_ENABLE)
+		if (val & PLANE_CTL_RENDER_DECOMPRESSION_ENABLE)
 			fb->modifier = I915_FORMAT_MOD_Yf_TILED_CCS;
 		else
 			fb->modifier = I915_FORMAT_MOD_Yf_TILED;
···
 		I915_STATE_WARN(crtc->active, "CRTC for pipe %c enabled\n",
 		     pipe_name(crtc->pipe));
 
-	I915_STATE_WARN(I915_READ(HSW_PWR_WELL_CTL_DRIVER(HSW_DISP_PW_GLOBAL)),
+	I915_STATE_WARN(I915_READ(HSW_PWR_WELL_CTL2),
 			"Display power well on\n");
 	I915_STATE_WARN(I915_READ(SPLL_CTL) & SPLL_PLL_ENABLE, "SPLL enabled\n");
 	I915_STATE_WARN(I915_READ(WRPLL_CTL(0)) & WRPLL_PLL_ENABLE, "WRPLL1 enabled\n");
···
 	return intel_cursor_size_ok(plane_state) && IS_ALIGNED(width, 64);
 }
 
-static int i845_check_cursor(struct intel_plane *plane,
-			     struct intel_crtc_state *crtc_state,
+static int i845_check_cursor(struct intel_crtc_state *crtc_state,
 			     struct intel_plane_state *plane_state)
 {
 	const struct drm_framebuffer *fb = plane_state->base.fb;
···
 	return true;
 }
 
-static int i9xx_check_cursor(struct intel_plane *plane,
-			     struct intel_crtc_state *crtc_state,
+static int i9xx_check_cursor(struct intel_crtc_state *crtc_state,
 			     struct intel_plane_state *plane_state)
 {
+	struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
 	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
 	const struct drm_framebuffer *fb = plane_state->base.fb;
 	enum pipe pipe = plane->pipe;
···
 	 * down.
 	 */
 	INIT_WORK(&state->commit_work, intel_atomic_cleanup_work);
-	schedule_work(&state->commit_work);
+	queue_work(system_highpri_wq, &state->commit_work);
 }
 
 static void intel_atomic_commit_work(struct work_struct *work)
···
 	    INTEL_INFO(dev_priv)->cursor_needs_physical) {
 		struct drm_i915_gem_object *obj = intel_fb_obj(fb);
 		const int align = intel_cursor_alignment(dev_priv);
+		int err;
 
-		return i915_gem_object_attach_phys(obj, align);
+		err = i915_gem_object_attach_phys(obj, align);
+		if (err)
+			return err;
 	}
 
 	vma = intel_pin_and_fence_fb_obj(fb,
···
 }
 
 static int
-intel_check_primary_plane(struct intel_plane *plane,
-			  struct intel_crtc_state *crtc_state,
+intel_check_primary_plane(struct intel_crtc_state *crtc_state,
 			  struct intel_plane_state *state)
 {
+	struct intel_plane *plane = to_intel_plane(state->base.plane);
 	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
 	struct drm_crtc *crtc = state->base.crtc;
 	int min_scale = DRM_PLANE_HELPER_NO_SCALING;
···
 	case DRM_FORMAT_XBGR8888:
 	case DRM_FORMAT_ARGB8888:
 	case DRM_FORMAT_ABGR8888:
-		if (modifier == I915_FORMAT_MOD_Yf_TILED_CCS ||
-		    modifier == I915_FORMAT_MOD_Y_TILED_CCS)
+		if (is_ccs_modifier(modifier))
 			return true;
 		/* fall through */
 	case DRM_FORMAT_RGB565:
···
 bool skl_plane_has_planar(struct drm_i915_private *dev_priv,
 			  enum pipe pipe, enum plane_id plane_id)
 {
-	if (plane_id == PLANE_PRIMARY) {
-		if (IS_SKYLAKE(dev_priv) || IS_BROXTON(dev_priv))
-			return false;
-		else if ((INTEL_GEN(dev_priv) == 9 && pipe == PIPE_C) &&
-			 !IS_GEMINILAKE(dev_priv))
-			return false;
-	} else if (plane_id >= PLANE_SPRITE0) {
-		if (plane_id == PLANE_CURSOR)
-			return false;
-		if (IS_GEMINILAKE(dev_priv) || INTEL_GEN(dev_priv) == 10) {
-			if (plane_id != PLANE_SPRITE0)
-				return false;
-		} else {
-			if (plane_id != PLANE_SPRITE0 || pipe == PIPE_C ||
-			    IS_SKYLAKE(dev_priv) || IS_BROXTON(dev_priv))
-				return false;
-		}
-	}
+	/*
+	 * FIXME: ICL requires two hardware planes for scanning out NV12
+	 * framebuffers. Do not advertize support until this is implemented.
+	 */
+	if (INTEL_GEN(dev_priv) >= 11)
+		return false;
+
+	if (IS_SKYLAKE(dev_priv) || IS_BROXTON(dev_priv))
+		return false;
+
+	if (INTEL_GEN(dev_priv) == 9 && !IS_GEMINILAKE(dev_priv) && pipe == PIPE_C)
+		return false;
+
+	if (plane_id != PLANE_PRIMARY && plane_id != PLANE_SPRITE0)
+		return false;
+
 	return true;
 }
 
···
 
 	intel_pps_init(dev_priv);
 
+	if (INTEL_INFO(dev_priv)->num_pipes == 0)
+		return;
+
 	/*
 	 * intel_edp_init_connector() depends on this completing first, to
 	 * prevent the registeration of both eDP and LVDS and the incorrect
···
 		break;
 	case DRM_FORMAT_NV12:
 		if (INTEL_GEN(dev_priv) < 9 || IS_SKYLAKE(dev_priv) ||
-		    IS_BROXTON(dev_priv)) {
+		    IS_BROXTON(dev_priv) || INTEL_GEN(dev_priv) >= 11) {
 			DRM_DEBUG_KMS("unsupported pixel format: %s\n",
 				      drm_get_format_name(mode_cmd->pixel_format,
 							  &format_name));
···
 		 * potential runtime errors at plane configuration time.
 		 */
 		if (IS_GEN9(dev_priv) && i == 0 && fb->width > 3840 &&
-		    (fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
-		     fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS))
+		    is_ccs_modifier(fb->modifier))
 			stride_alignment *= 4;
 
 		if (fb->pitches[i] & (stride_alignment - 1)) {
···
 	DRM_DEBUG_DRIVER("FDI PLL freq=%d\n", dev_priv->fdi_pll_freq);
 }
 
+static int intel_initial_commit(struct drm_device *dev)
+{
+	struct drm_atomic_state *state = NULL;
+	struct drm_modeset_acquire_ctx ctx;
+	struct drm_crtc *crtc;
+	struct drm_crtc_state *crtc_state;
+	int ret = 0;
+
+	state = drm_atomic_state_alloc(dev);
+	if (!state)
+		return -ENOMEM;
+
+	drm_modeset_acquire_init(&ctx, 0);
+
+retry:
+	state->acquire_ctx = &ctx;
+
+	drm_for_each_crtc(crtc, dev) {
+		crtc_state = drm_atomic_get_crtc_state(state, crtc);
+		if (IS_ERR(crtc_state)) {
+			ret = PTR_ERR(crtc_state);
+			goto out;
+		}
+
+		if (crtc_state->active) {
+			ret = drm_atomic_add_affected_planes(state, crtc);
+			if (ret)
+				goto out;
+		}
+	}
+
+	ret = drm_atomic_commit(state);
+
+out:
+	if (ret == -EDEADLK) {
+		drm_atomic_state_clear(state);
+		drm_modeset_backoff(&ctx);
+		goto retry;
+	}
+
+	drm_atomic_state_put(state);
+
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
+
+	return ret;
+}
+
 int intel_modeset_init(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	struct i915_ggtt *ggtt = &dev_priv->ggtt;
 	enum pipe pipe;
 	struct intel_crtc *crtc;
+	int ret;
 
 	dev_priv->modeset_wq = alloc_ordered_workqueue("i915_modeset", 0);
 
···
 	intel_init_quirks(dev);
 
 	intel_init_pm(dev_priv);
-
-	if (INTEL_INFO(dev_priv)->num_pipes == 0)
-		return 0;
 
 	/*
 	 * There may be no VBT; and if the BIOS enabled SSC we can
···
 		      INTEL_INFO(dev_priv)->num_pipes > 1 ? "s" : "");
 
 	for_each_pipe(dev_priv, pipe) {
-		int ret;
-
 		ret = intel_crtc_init(dev_priv, pipe);
 		if (ret) {
 			drm_mode_config_cleanup(dev);
···
 	 */
 	if (!HAS_GMCH_DISPLAY(dev_priv))
 		sanitize_watermarks(dev);
+
+	/*
+	 * Force all active planes to recompute their states. So that on
+	 * mode_setcrtc after probe, all the intel_plane_state variables
+	 * are already calculated and there is no assert_plane warnings
+	 * during bootup.
+	 */
+	ret = intel_initial_commit(dev);
+	if (ret)
+		DRM_DEBUG_KMS("Initial commit in probe failed.\n");
 
 	return 0;
 }
···
 	struct intel_encoder *encoder;
 	int i;
 
+	intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
+
 	intel_early_display_was(dev_priv);
 	intel_modeset_readout_hw_state(dev);
 
···
 		if (WARN_ON(put_domains))
 			modeset_put_power_domains(dev_priv, put_domains);
 	}
-	intel_display_set_init_power(dev_priv, false);
 
-	intel_power_domains_verify_state(dev_priv);
+	intel_display_power_put(dev_priv, POWER_DOMAIN_INIT);
 
 	intel_fbc_init_pipe_state(dev_priv);
 }
···
 	flush_work(&dev_priv->atomic_helper.free_work);
 	WARN_ON(!llist_empty(&dev_priv->atomic_helper.free_list));
 
-	intel_disable_gt_powersave(dev_priv);
-
 	/*
 	 * Interrupts and polling as the first thing to avoid creating havoc.
 	 * Too much stuff here (turning of connectors, ...) would
···
 	drm_mode_config_cleanup(dev);
 
 	intel_cleanup_overlay(dev_priv);
-
-	intel_cleanup_gt_powersave(dev_priv);
 
 	intel_teardown_gmbus(dev_priv);
 
···
 		return NULL;
 
 	if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
-		error->power_well_driver =
-			I915_READ(HSW_PWR_WELL_CTL_DRIVER(HSW_DISP_PW_GLOBAL));
+		error->power_well_driver = I915_READ(HSW_PWR_WELL_CTL2);
 
 	for_each_pipe(dev_priv, i) {
 		error->pipe[i].power_domain_on =

drivers/gpu/drm/i915/intel_display.h

···
 #ifndef _INTEL_DISPLAY_H_
 #define _INTEL_DISPLAY_H_
 
+enum i915_gpio {
+	GPIOA,
+	GPIOB,
+	GPIOC,
+	GPIOD,
+	GPIOE,
+	GPIOF,
+	GPIOG,
+	GPIOH,
+	__GPIOI_UNUSED,
+	GPIOJ,
+	GPIOK,
+	GPIOL,
+	GPIOM,
+};
+
 enum pipe {
 	INVALID_PIPE = -1,
 
···
 	PORT_TC4,
 
 	I915_MAX_TC_PORTS
+};
+
+enum tc_port_type {
+	TC_PORT_UNKNOWN = 0,
+	TC_PORT_TYPEC,
+	TC_PORT_TBT,
+	TC_PORT_LEGACY,
 };
 
 enum dpio_channel {
···
 
 #define for_each_power_domain_well(__dev_priv, __power_well, __domain_mask)	\
 	for_each_power_well(__dev_priv, __power_well)				\
-		for_each_if((__power_well)->domains & (__domain_mask))
+		for_each_if((__power_well)->desc->domains & (__domain_mask))
 
 #define for_each_power_domain_well_rev(__dev_priv, __power_well, __domain_mask) \
 	for_each_power_well_rev(__dev_priv, __power_well)		        \
-		for_each_if((__power_well)->domains & (__domain_mask))
+		for_each_if((__power_well)->desc->domains & (__domain_mask))
 
 #define for_each_new_intel_plane_in_state(__state, plane, new_plane_state, __i) \
 	for ((__i) = 0; \
···
 			    struct intel_link_m_n *m_n,
 			    bool reduce_m_n);
 
+bool is_ccs_modifier(u64 modifier);
 #endif

drivers/gpu/drm/i915/intel_dp.c

···
 	return intel_dig_port->base.type == INTEL_OUTPUT_EDP;
 }
 
-static struct drm_device *intel_dp_to_dev(struct intel_dp *intel_dp)
-{
-	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
-
-	return intel_dig_port->base.base.dev;
-}
-
 static struct intel_dp *intel_attached_dp(struct drm_connector *connector)
 {
 	return enc_to_intel_dp(&intel_attached_encoder(connector)->base);
···
 	return intel_dp->common_rates[intel_dp->num_common_rates - 1];
 }
 
+static int intel_dp_get_fia_supported_lane_count(struct intel_dp *intel_dp)
+{
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
+	enum tc_port tc_port = intel_port_to_tc(dev_priv, dig_port->base.port);
+	u32 lane_info;
+
+	if (tc_port == PORT_TC_NONE || dig_port->tc_type != TC_PORT_TYPEC)
+		return 4;
+
+	lane_info = (I915_READ(PORT_TX_DFLEXDPSP) &
+		     DP_LANE_ASSIGNMENT_MASK(tc_port)) >>
+		    DP_LANE_ASSIGNMENT_SHIFT(tc_port);
+
+	switch (lane_info) {
+	default:
+		MISSING_CASE(lane_info);
+	case 1:
+	case 2:
+	case 4:
+	case 8:
+		return 1;
+	case 3:
+	case 12:
+		return 2;
+	case 15:
+		return 4;
+	}
+}
+
 /* Theoretical max between source and sink */
 static int intel_dp_max_common_lane_count(struct intel_dp *intel_dp)
 {
 	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
 	int source_max = intel_dig_port->max_lanes;
 	int sink_max = drm_dp_max_lane_count(intel_dp->dpcd);
+	int fia_max = intel_dp_get_fia_supported_lane_count(intel_dp);
 
-	return min(source_max, sink_max);
+	return min3(source_max, sink_max, fia_max);
 }
 
 int intel_dp_max_lane_count(struct intel_dp *intel_dp)
···
 {
 	/* pixel_clock is in kHz, divide bpp by 8 for bit to Byte conversion */
 	return DIV_ROUND_UP(pixel_clock * bpp, 8);
+}
+
+void icl_program_mg_dp_mode(struct intel_dp *intel_dp)
+{
+	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	enum port port = intel_dig_port->base.port;
+	enum tc_port tc_port = intel_port_to_tc(dev_priv, port);
+	u32 ln0, ln1, lane_info;
+
+	if (tc_port == PORT_TC_NONE || intel_dig_port->tc_type == TC_PORT_TBT)
+		return;
+
+	ln0 = I915_READ(MG_DP_MODE(port, 0));
+	ln1 = I915_READ(MG_DP_MODE(port, 1));
+
+	switch (intel_dig_port->tc_type) {
+	case TC_PORT_TYPEC:
+		ln0 &= ~(MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE);
+		ln1 &= ~(MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE);
+
+		lane_info = (I915_READ(PORT_TX_DFLEXDPSP) &
+			     DP_LANE_ASSIGNMENT_MASK(tc_port)) >>
+			    DP_LANE_ASSIGNMENT_SHIFT(tc_port);
+
+		switch (lane_info) {
+		case 0x1:
+		case 0x4:
+			break;
+		case 0x2:
+			ln0 |= MG_DP_MODE_CFG_DP_X1_MODE;
+			break;
+		case 0x3:
+			ln0 |= MG_DP_MODE_CFG_DP_X1_MODE |
+			       MG_DP_MODE_CFG_DP_X2_MODE;
+			break;
+		case 0x8:
+			ln1 |= MG_DP_MODE_CFG_DP_X1_MODE;
+			break;
+		case 0xC:
+			ln1 |= MG_DP_MODE_CFG_DP_X1_MODE |
+			       MG_DP_MODE_CFG_DP_X2_MODE;
+			break;
+		case 0xF:
+			ln0 |= MG_DP_MODE_CFG_DP_X1_MODE |
+			       MG_DP_MODE_CFG_DP_X2_MODE;
+			ln1 |= MG_DP_MODE_CFG_DP_X1_MODE |
+			       MG_DP_MODE_CFG_DP_X2_MODE;
+			break;
+		default:
+			MISSING_CASE(lane_info);
+		}
+		break;
+
+	case TC_PORT_LEGACY:
+		ln0 |= MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE;
+		ln1 |= MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE;
+		break;
+
+	default:
+		MISSING_CASE(intel_dig_port->tc_type);
+		return;
+	}
+
+	I915_WRITE(MG_DP_MODE(port, 0), ln0);
+	I915_WRITE(MG_DP_MODE(port, 1), ln1);
+}
+
+void icl_enable_phy_clock_gating(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
+	enum port port = dig_port->base.port;
+	enum tc_port tc_port = intel_port_to_tc(dev_priv, port);
+	i915_reg_t mg_regs[2] = { MG_DP_MODE(port, 0), MG_DP_MODE(port, 1) };
+	u32 val;
+	int i;
+
+	if (tc_port == PORT_TC_NONE)
+		return;
+
+	for (i = 0; i < ARRAY_SIZE(mg_regs); i++) {
+		val = I915_READ(mg_regs[i]);
+		val |= MG_DP_MODE_CFG_TR2PWR_GATING |
+		       MG_DP_MODE_CFG_TRPWR_GATING |
+		       MG_DP_MODE_CFG_CLNPWR_GATING |
+		       MG_DP_MODE_CFG_DIGPWR_GATING |
+		       MG_DP_MODE_CFG_GAONPWR_GATING;
+		I915_WRITE(mg_regs[i], val);
+	}
+
+	val = I915_READ(MG_MISC_SUS0(tc_port));
+	val |= MG_MISC_SUS0_SUSCLK_DYNCLKGATE_MODE(3) |
+	       MG_MISC_SUS0_CFG_TR2PWR_GATING |
+	       MG_MISC_SUS0_CFG_CL2PWR_GATING |
+	       MG_MISC_SUS0_CFG_GAONPWR_GATING |
+	       MG_MISC_SUS0_CFG_TRPWR_GATING |
+	       MG_MISC_SUS0_CFG_CL1PWR_GATING |
+	       MG_MISC_SUS0_CFG_DGPWR_GATING;
+	I915_WRITE(MG_MISC_SUS0(tc_port), val);
+}
+
+void icl_disable_phy_clock_gating(struct intel_digital_port *dig_port)
+{
+	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
+	enum port port = dig_port->base.port;
+	enum tc_port tc_port = intel_port_to_tc(dev_priv, port);
+	i915_reg_t mg_regs[2] = { MG_DP_MODE(port, 0), MG_DP_MODE(port, 1) };
+	u32 val;
+	int i;
+
+	if (tc_port == PORT_TC_NONE)
+		return;
+
+	for (i = 0; i < ARRAY_SIZE(mg_regs); i++) {
+		val = I915_READ(mg_regs[i]);
+		val &= ~(MG_DP_MODE_CFG_TR2PWR_GATING |
+			 MG_DP_MODE_CFG_TRPWR_GATING |
+			 MG_DP_MODE_CFG_CLNPWR_GATING |
+			 MG_DP_MODE_CFG_DIGPWR_GATING |
+			 MG_DP_MODE_CFG_GAONPWR_GATING);
+		I915_WRITE(mg_regs[i], val);
+	}
+
+	val = I915_READ(MG_MISC_SUS0(tc_port));
+	val &= ~(MG_MISC_SUS0_SUSCLK_DYNCLKGATE_MODE_MASK |
+		 MG_MISC_SUS0_CFG_TR2PWR_GATING |
+		 MG_MISC_SUS0_CFG_CL2PWR_GATING |
+		 MG_MISC_SUS0_CFG_GAONPWR_GATING |
+		 MG_MISC_SUS0_CFG_TRPWR_GATING |
+		 MG_MISC_SUS0_CFG_CL1PWR_GATING |
+		 MG_MISC_SUS0_CFG_DGPWR_GATING);
+	I915_WRITE(MG_MISC_SUS0(tc_port), val);
 }
 
 int
···
 
 static void pps_lock(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
 	/*
 	 * See intel_power_sequencer_reset() why we need
···
 
 static void pps_unlock(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
 	mutex_unlock(&dev_priv->pps_mutex);
 
···
 static void
 vlv_power_sequencer_kick(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
 	enum pipe pipe = intel_dp->pps_pipe;
 	bool pll_enabled, release_cl_override = false;
···
 static enum pipe
 vlv_power_sequencer_pipe(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
 	enum pipe pipe;
 
···
 static int
 bxt_power_sequencer_idx(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	int backlight_controller = dev_priv->vbt.backlight.controller;
 
 	lockdep_assert_held(&dev_priv->pps_mutex);
···
 static void
 vlv_initial_power_sequencer_setup(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
 	enum port port = intel_dig_port->base.port;
 
···
 static void intel_pps_get_registers(struct intel_dp *intel_dp,
 				    struct pps_registers *regs)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	int pps_idx = 0;
 
 	memset(regs, 0, sizeof(*regs));
···
 {
 	struct intel_dp *intel_dp = container_of(this, typeof(* intel_dp),
 						 edp_notifier);
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
 	if (!intel_dp_is_edp(intel_dp) || code != SYS_RESTART)
 		return 0;
···
 
 static bool edp_have_panel_power(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
 	lockdep_assert_held(&dev_priv->pps_mutex);
 
···
 
 static bool edp_have_panel_vdd(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
 	lockdep_assert_held(&dev_priv->pps_mutex);
 
···
 static void
 intel_dp_check_edp(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
 	if (!intel_dp_is_edp(intel_dp))
 		return;
···
 static uint32_t
 intel_dp_aux_wait_done(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	i915_reg_t ch_ctl = intel_dp->aux_ch_ctl_reg(intel_dp);
 	uint32_t status;
 	bool done;
···
 
 static uint32_t g4x_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
 	if (index)
 		return 0;
···
 
 static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
 	if (index)
 		return 0;
···
 
 static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
 	if (intel_dp->aux_ch != AUX_CH_A && HAS_PCH_LPT_H(dev_priv)) {
 		/* Workaround for non-ULT HSW */
···
 				      int send_bytes,
 				      uint32_t unused)
 {
-	return DP_AUX_CH_CTL_SEND_BUSY |
-	       DP_AUX_CH_CTL_DONE |
-	       DP_AUX_CH_CTL_INTERRUPT |
-	       DP_AUX_CH_CTL_TIME_OUT_ERROR |
-	       DP_AUX_CH_CTL_TIME_OUT_MAX |
-	       DP_AUX_CH_CTL_RECEIVE_ERROR |
-	       (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) |
-	       DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(32) |
-	       DP_AUX_CH_CTL_SYNC_PULSE_SKL(32);
+	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+	uint32_t ret;
+
+	ret = DP_AUX_CH_CTL_SEND_BUSY |
+	      DP_AUX_CH_CTL_DONE |
+	      DP_AUX_CH_CTL_INTERRUPT |
+	      DP_AUX_CH_CTL_TIME_OUT_ERROR |
+	      DP_AUX_CH_CTL_TIME_OUT_MAX |
+	      DP_AUX_CH_CTL_RECEIVE_ERROR |
+	      (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) |
+	      DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(32) |
+	      DP_AUX_CH_CTL_SYNC_PULSE_SKL(32);
+
+	if (intel_dig_port->tc_type == TC_PORT_TBT)
+		ret |= DP_AUX_CH_CTL_TBT_IO;
+
+	return ret;
 }
 
 static int
···
 
 static i915_reg_t g4x_aux_ctl_reg(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	enum aux_ch aux_ch = intel_dp->aux_ch;
 
 	switch (aux_ch) {
···
 
 static i915_reg_t g4x_aux_data_reg(struct intel_dp *intel_dp, int index)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	enum aux_ch aux_ch = intel_dp->aux_ch;
 
 	switch (aux_ch) {
···
 
 static i915_reg_t ilk_aux_ctl_reg(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	enum aux_ch aux_ch = intel_dp->aux_ch;
 
 	switch (aux_ch) {
···
 
 static i915_reg_t ilk_aux_data_reg(struct intel_dp *intel_dp, int index)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	enum aux_ch aux_ch = intel_dp->aux_ch;
 
 	switch (aux_ch) {
···
 
 static i915_reg_t skl_aux_ctl_reg(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	enum aux_ch aux_ch = intel_dp->aux_ch;
 
 	switch (aux_ch) {
···
 
 static i915_reg_t skl_aux_data_reg(struct intel_dp *intel_dp, int index)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	enum aux_ch aux_ch = intel_dp->aux_ch;
 
 	switch (aux_ch) {
···
 static void
 intel_dp_aux_init(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
 
 	intel_dp->aux_ch = intel_aux_ch(intel_dp);
···
 static int intel_dp_compute_bpp(struct intel_dp *intel_dp,
 				struct intel_crtc_state *pipe_config)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	struct intel_connector *intel_connector = intel_dp->attached_connector;
 	int bpp, bpc;
 
···
 				       u32 mask,
 				       u32 value)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	i915_reg_t pp_stat_reg, pp_ctrl_reg;
 
 	lockdep_assert_held(&dev_priv->pps_mutex);
···
 
 static  u32 ironlake_get_pp_control(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	u32 control;
 
 	lockdep_assert_held(&dev_priv->pps_mutex);
···
  */
 static bool edp_panel_vdd_on(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
 	u32 pp;
 	i915_reg_t pp_stat_reg, pp_ctrl_reg;
···
 
 static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	struct intel_digital_port *intel_dig_port =
 		dp_to_dig_port(intel_dp);
 	u32 pp;
···
  */
 static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
 	lockdep_assert_held(&dev_priv->pps_mutex);
 
···
 
 static void edp_panel_on(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	u32 pp;
 	i915_reg_t pp_ctrl_reg;
 
···
 
 static void edp_panel_off(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	u32 pp;
 	i915_reg_t pp_ctrl_reg;
 
···
 /* Enable backlight in the panel power control. */
 static void _intel_edp_backlight_on(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	u32 pp;
 	i915_reg_t pp_ctrl_reg;
 
···
 /* Disable backlight in the panel power control. */
 static void _intel_edp_backlight_off(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	u32 pp;
 	i915_reg_t pp_ctrl_reg;
 
···
 			 uint32_t *DP,
 			 uint8_t dp_train_pat)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
 	enum port port = intel_dig_port->base.port;
 	uint8_t train_pat_mask = drm_dp_training_pattern_mask(intel_dp->dpcd);
···
 static void intel_dp_enable_port(struct intel_dp *intel_dp,
 				 const struct intel_crtc_state *old_crtc_state)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
 	/* enable with pattern 1 (as per spec) */
 
···
 uint8_t
 intel_dp_voltage_max(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
 	enum port port = encoder->port;
 
···
 uint8_t
 intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
 	enum port port = encoder->port;
 
···
 void
 intel_dp_set_signal_levels(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
 	enum port port = intel_dig_port->base.port;
 	uint32_t signal_levels, mask = 0;
···
 
 void intel_dp_set_idle_link_train(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
 	enum port port = intel_dig_port->base.port;
 	uint32_t val;
···
 		int ret = 0;
 		int retry;
 		bool handled;
+
+		WARN_ON_ONCE(intel_dp->active_mst_links < 0);
 		bret = intel_dp_get_sink_irq_esi(intel_dp, esi);
 go_again:
 		if (bret == true) {
 
 			/* check link status - esi[10] = 0x200c */
-			if (intel_dp->active_mst_links &&
+			if (intel_dp->active_mst_links > 0 &&
 			    !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) {
 				DRM_DEBUG_KMS("channel EQ not ok, retraining\n");
 				intel_dp_start_link_train(intel_dp);
···
 	return !drm_dp_channel_eq_ok(link_status, intel_dp->lane_count);
 }
 
-/*
- * If display is now connected check links status,
- * there has been known issues of link loss triggering
- * long pulse.
- *
- * Some sinks (eg. ASUS PB287Q) seem to perform some
- * weird HPD ping pong during modesets. So we can apparently
- * end up with HPD going low during a modeset, and then
- * going back up soon after. And once that happens we must
- * retrain the link to get a picture. That's in case no
- * userspace component reacted to intermittent HPD dip.
- */
 int intel_dp_retrain_link(struct intel_encoder *encoder,
 			  struct drm_modeset_acquire_ctx *ctx)
 {
···
 static bool
 intel_dp_short_pulse(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	u8 sink_irq_vector = 0;
 	u8 old_sink_count = intel_dp->sink_count;
 	bool ret;
···
 	return I915_READ(GEN8_DE_PORT_ISR) & bit;
 }
 
+static bool icl_combo_port_connected(struct drm_i915_private *dev_priv,
+				     struct intel_digital_port *intel_dig_port)
+{
+	enum port port = intel_dig_port->base.port;
+
+	return I915_READ(SDEISR) & SDE_DDI_HOTPLUG_ICP(port);
+}
+
+static void icl_update_tc_port_type(struct drm_i915_private *dev_priv,
+				    struct intel_digital_port *intel_dig_port,
+				    bool is_legacy, bool is_typec, bool is_tbt)
+{
+	enum port port = intel_dig_port->base.port;
+	enum tc_port_type old_type = intel_dig_port->tc_type;
+	const char *type_str;
+
+	WARN_ON(is_legacy + is_typec + is_tbt != 1);
+
+	if (is_legacy) {
+		intel_dig_port->tc_type = TC_PORT_LEGACY;
+		type_str = "legacy";
+	} else if (is_typec) {
+		intel_dig_port->tc_type = TC_PORT_TYPEC;
+		type_str = "typec";
+	} else if (is_tbt) {
+		intel_dig_port->tc_type = TC_PORT_TBT;
+		type_str = "tbt";
+	} else {
+		return;
+	}
+
+	/* Types are not supposed to be changed at runtime. */
+	WARN_ON(old_type != TC_PORT_UNKNOWN &&
+		old_type != intel_dig_port->tc_type);
+
+	if (old_type != intel_dig_port->tc_type)
+		DRM_DEBUG_KMS("Port %c has TC type %s\n", port_name(port),
+			      type_str);
+}
+
+/*
+ * This function implements the first part of the Connect Flow described by our
+ * specification, Gen11 TypeC Programming chapter. The rest of the flow (reading
+ * lanes, EDID, etc) is done as needed in the typical places.
+ *
+ * Unlike the other ports, type-C ports are not available to use as soon as we
+ * get a hotplug. The type-C PHYs can be shared between multiple controllers:
+ * display, USB, etc. As a result, handshaking through FIA is required around
+ * connect and disconnect to cleanly transfer ownership with the controller and
+ * set the type-C power state.
+ *
+ * We could opt to only do the connect flow when we actually try to use the AUX
+ * channels or do a modeset, then immediately run the disconnect flow after
+ * usage, but there are some implications on this for a dynamic environment:
+ * things may go away or change behind our backs. So for now our driver is
+ * always trying to acquire ownership of the controller as soon as it gets an
+ * interrupt (or polls state and sees a port is connected) and only gives it
+ * back when it sees a disconnect. Implementation of a more fine-grained model
+ * will require a lot of coordination with user space and thorough testing for
+ * the extra possible cases.
+ */
+static bool icl_tc_phy_connect(struct drm_i915_private *dev_priv,
+			       struct intel_digital_port *dig_port)
+{
+	enum tc_port tc_port = intel_port_to_tc(dev_priv, dig_port->base.port);
+	u32 val;
+
+	if (dig_port->tc_type != TC_PORT_LEGACY &&
+	    dig_port->tc_type != TC_PORT_TYPEC)
+		return true;
+
+	val = I915_READ(PORT_TX_DFLEXDPPMS);
+	if (!(val & DP_PHY_MODE_STATUS_COMPLETED(tc_port))) {
+		DRM_DEBUG_KMS("DP PHY for TC port %d not ready\n", tc_port);
+		return false;
+	}
+
+	/*
+	 * This function may be called many times in a row without an HPD event
+	 * in between, so try to avoid the write when we can.
+	 */
+	val = I915_READ(PORT_TX_DFLEXDPCSSS);
+	if (!(val & DP_PHY_MODE_STATUS_NOT_SAFE(tc_port))) {
+		val |= DP_PHY_MODE_STATUS_NOT_SAFE(tc_port);
+		I915_WRITE(PORT_TX_DFLEXDPCSSS, val);
+	}
+
+	/*
+	 * Now we have to re-check the live state, in case the port recently
+	 * became disconnected. Not necessary for legacy mode.
+	 */
+	if (dig_port->tc_type == TC_PORT_TYPEC &&
+	    !(I915_READ(PORT_TX_DFLEXDPSP) & TC_LIVE_STATE_TC(tc_port))) {
+		DRM_DEBUG_KMS("TC PHY %d sudden disconnect.\n", tc_port);
+		val = I915_READ(PORT_TX_DFLEXDPCSSS);
+		val &= ~DP_PHY_MODE_STATUS_NOT_SAFE(tc_port);
+		I915_WRITE(PORT_TX_DFLEXDPCSSS, val);
+		return false;
+	}
+
+	return true;
+}
+
+/*
+ * See the comment at the connect function. This implements the Disconnect
+ * Flow.
+ */
+static void icl_tc_phy_disconnect(struct drm_i915_private *dev_priv,
+				  struct intel_digital_port *dig_port)
+{
+	enum tc_port tc_port = intel_port_to_tc(dev_priv, dig_port->base.port);
+	u32 val;
+
+	if (dig_port->tc_type != TC_PORT_LEGACY &&
+	    dig_port->tc_type != TC_PORT_TYPEC)
+		return;
+
+	/*
+	 * This function may be called many times in a row without an HPD event
+	 * in between, so try to avoid the write when we can.
+	 */
+	val = I915_READ(PORT_TX_DFLEXDPCSSS);
+	if (val & DP_PHY_MODE_STATUS_NOT_SAFE(tc_port)) {
+		val &= ~DP_PHY_MODE_STATUS_NOT_SAFE(tc_port);
+		I915_WRITE(PORT_TX_DFLEXDPCSSS, val);
+	}
+}
+
+/*
+ * The type-C ports are different because even when they are connected, they may
+ * not be available/usable by the graphics driver: see the comment on
+ * icl_tc_phy_connect(). So in our driver instead of adding the additional
+ * concept of "usable" and make everything check for "connected and usable" we
+ * define a port as "connected" when it is not only connected, but also when it
+ * is usable by the rest of the driver. That maintains the old assumption that
+ * connected ports are usable, and avoids exposing to the users objects they
+ * can't really use.
+ */
+static bool icl_tc_port_connected(struct drm_i915_private *dev_priv,
+				  struct intel_digital_port *intel_dig_port)
+{
+	enum port port = intel_dig_port->base.port;
+	enum tc_port tc_port = intel_port_to_tc(dev_priv, port);
+	bool is_legacy, is_typec, is_tbt;
+	u32 dpsp;
+
+	is_legacy = I915_READ(SDEISR) & SDE_TC_HOTPLUG_ICP(tc_port);
+
+	/*
+	 * The spec says we shouldn't be using the ISR bits for detecting
+	 * between TC and TBT. We should use DFLEXDPSP.
+	 */
+	dpsp = I915_READ(PORT_TX_DFLEXDPSP);
+	is_typec = dpsp & TC_LIVE_STATE_TC(tc_port);
+	is_tbt = dpsp & TC_LIVE_STATE_TBT(tc_port);
+
+	if (!is_legacy && !is_typec && !is_tbt) {
+		icl_tc_phy_disconnect(dev_priv, intel_dig_port);
+		return false;
+	}
+
+	icl_update_tc_port_type(dev_priv, intel_dig_port, is_legacy, is_typec,
+				is_tbt);
+
+	if (!icl_tc_phy_connect(dev_priv, intel_dig_port))
+		return false;
+
+	return true;
+}
+
+static bool icl_digital_port_connected(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
+
+	switch (encoder->hpd_pin) {
+	case HPD_PORT_A:
+	case HPD_PORT_B:
+		return icl_combo_port_connected(dev_priv, dig_port);
+	case HPD_PORT_C:
+	case HPD_PORT_D:
+	case HPD_PORT_E:
+	case HPD_PORT_F:
+		return icl_tc_port_connected(dev_priv, dig_port);
+	default:
+		MISSING_CASE(encoder->hpd_pin);
+		return false;
+	}
+}
+
 /*
  * intel_digital_port_connected - is the specified port connected?
  * @encoder: intel_encoder
+ *
+ * In cases where there's a connector physically connected but it can't be used
+ * by our hardware we also return false, since the rest of the driver should
+ * pretty much treat the port as disconnected. This is relevant for type-C
+ * (starting on ICL) where there's ownership involved.
  *
  * Return %true if port is connected, %false otherwise.
  */
···
 		return bdw_digital_port_connected(encoder);
 	else if (IS_GEN9_LP(dev_priv))
 		return bxt_digital_port_connected(encoder);
-	else
+	else if (IS_GEN9_BC(dev_priv) || IS_GEN10(dev_priv))
 		return spt_digital_port_connected(encoder);
+	else
+		return icl_digital_port_connected(encoder);
 }
 
 static struct edid *
···
 }
 
 static int
-intel_dp_long_pulse(struct intel_connector *connector)
+intel_dp_long_pulse(struct intel_connector *connector,
+		    struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_dp *intel_dp = intel_attached_dp(&connector->base);
···
 		 */
 		status = connector_status_disconnected;
 		goto out;
+	} else {
+		/*
+		 * If display is now connected check links status,
+		 * there has been known issues of link loss triggering
+		 * long pulse.
+		 *
+		 * Some sinks (eg. ASUS PB287Q) seem to perform some
+		 * weird HPD ping pong during modesets. So we can apparently
+		 * end up with HPD going low during a modeset, and then
+		 * going back up soon after. And once that happens we must
+		 * retrain the link to get a picture. That's in case no
+		 * userspace component reacted to intermittent HPD dip.
+		 */
+		struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+
+		intel_dp_retrain_link(encoder, ctx);
 	}
 
 	/*
···
 				return ret;
 		}
 
-		status = intel_dp_long_pulse(intel_dp->attached_connector);
+		status = intel_dp_long_pulse(intel_dp->attached_connector, ctx);
 	}
 
 	intel_dp->detect_done = false;
···
 
 static void intel_edp_panel_vdd_sanitize(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
 	lockdep_assert_held(&dev_priv->pps_mutex);
 
···
 
 static enum pipe vlv_active_pipe(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
 	enum pipe pipe;
 
···
 intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd)
 {
 	struct intel_dp *intel_dp = &intel_dig_port->dp;
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	enum irqreturn ret = IRQ_NONE;
 
 	if (long_hpd && intel_dig_port->base.type == INTEL_OUTPUT_EDP) {
···
 static void
 intel_pps_readout_hw_state(struct intel_dp *intel_dp, struct edp_power_seq *seq)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	u32 pp_on, pp_off, pp_div = 0, pp_ctl = 0;
 	struct pps_registers regs;
 
···
 static void
 intel_dp_init_panel_power_sequencer(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	struct edp_power_seq cur, vbt, spec,
 		*final = &intel_dp->pps_delays;
 
···
 intel_dp_init_panel_power_sequencer_registers(struct intel_dp *intel_dp,
 					      bool force_disable_vdd)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	u32 pp_on, pp_off, pp_div, port_sel = 0;
 	int div = dev_priv->rawclk_freq / 1000;
 	struct pps_registers regs;
···
 
 static void intel_dp_pps_init(struct intel_dp *intel_dp)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
 	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
 		vlv_initial_power_sequencer_setup(intel_dp);
···
 void intel_edp_drrs_enable(struct intel_dp *intel_dp,
 			   const struct intel_crtc_state *crtc_state)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
 	if (!crtc_state->has_drrs) {
 		DRM_DEBUG_KMS("Panel doesn't support DRRS\n");
···
 void intel_edp_drrs_disable(struct intel_dp *intel_dp,
 			    const struct intel_crtc_state *old_crtc_state)
 {
-	struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
 	if (!old_crtc_state->has_drrs)
 		return;
···
 static bool intel_edp_init_connector(struct intel_dp *intel_dp,
 				     struct intel_connector *intel_connector)
 {
-	struct drm_device *dev = intel_dp_to_dev(intel_dp);
-	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct drm_device *dev = &dev_priv->drm;
 	struct drm_connector *connector = &intel_connector->base;
 	struct drm_display_mode *fixed_mode = NULL;
 	struct drm_display_mode *downclock_mode = NULL;

drivers/gpu/drm/i915/intel_dp_link_training.c

···
 intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp)
 {
 	uint8_t voltage;
-	int voltage_tries, max_vswing_tries;
+	int voltage_tries, cr_tries, max_cr_tries;
+	bool max_vswing_reached = false;
 	uint8_t link_config[2];
 	uint8_t link_bw, rate_select;
 
···
 		return false;
 	}
 
+	/*
+	 * The DP 1.4 spec defines the max clock recovery retries value
+	 * as 10 but for pre-DP 1.4 devices we set a very tolerant
+	 * retry limit of 80 (4 voltage levels x 4 preemphasis levels x
+	 * x 5 identical voltage retries). Since the previous specs didn't
+	 * define a limit and created the possibility of an infinite loop
+	 * we want to prevent any sync from triggering that corner case.
+	 */
+	if (intel_dp->dpcd[DP_DPCD_REV] >= DP_DPCD_REV_14)
+		max_cr_tries = 10;
+	else
+		max_cr_tries = 80;
+
 	voltage_tries = 1;
-	max_vswing_tries = 0;
-	for (;;) {
+	for (cr_tries = 0; cr_tries < max_cr_tries; ++cr_tries) {
 		uint8_t link_status[DP_LINK_STATUS_SIZE];
 
 		drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd);
···
 			return false;
 		}
 
-		if (max_vswing_tries == 1) {
+		if (max_vswing_reached) {
 			DRM_DEBUG_KMS("Max Voltage Swing reached\n");
 			return false;
 		}
···
 			voltage_tries = 1;
 
 		if (intel_dp_link_max_vswing_reached(intel_dp))
-			++max_vswing_tries;
+			max_vswing_reached = true;
 
 	}
+	DRM_ERROR("Failed clock recovery %d times, giving up!\n", max_cr_tries);
+	return false;
 }
 
 /*

drivers/gpu/drm/i915/intel_dp_mst.c

···
 	struct intel_connector *connector =
 		to_intel_connector(old_conn_state->connector);
 
+	intel_ddi_disable_pipe_clock(old_crtc_state);
+
 	/* this can fail */
 	drm_dp_check_act_status(&intel_dp->mst_mgr);
 	/* and this can also fail */
···
 				       connector->port,
 				       pipe_config->pbn,
 				       pipe_config->dp_m_n.tu);
-	if (ret == false) {
+	if (!ret)
 		DRM_ERROR("failed to allocate vcpi\n");
-		return;
-	}
-
 
 	intel_dp->active_mst_links++;
 	temp = I915_READ(DP_TP_STATUS(port));
 	I915_WRITE(DP_TP_STATUS(port), temp);
 
 	ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr);
+
+	intel_ddi_enable_pipe_clock(pipe_config);
 }
 
 static void intel_mst_enable_dp(struct intel_encoder *encoder,
···
 	struct intel_dp *intel_dp = &intel_dig_port->dp;
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	enum port port = intel_dig_port->base.port;
-	int ret;
 
 	DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links);
 
···
 				    1))
 		DRM_ERROR("Timed out waiting for ACT sent\n");
 
-	ret = drm_dp_check_act_status(&intel_dp->mst_mgr);
+	drm_dp_check_act_status(&intel_dp->mst_mgr);
 
-	ret = drm_dp_update_payload_part2(&intel_dp->mst_mgr);
+	drm_dp_update_payload_part2(&intel_dp->mst_mgr);
 	if (pipe_config->has_audio)
 		intel_audio_codec_enable(encoder, pipe_config, conn_state);
 }

drivers/gpu/drm/i915/intel_dpll_mgr.c

···
 	params->dco_fraction = dco & 0x7fff;
 }
 
+int cnl_hdmi_pll_ref_clock(struct drm_i915_private *dev_priv)
+{
+	int ref_clock = dev_priv->cdclk.hw.ref;
+
+	/*
+	 * For ICL+, the spec states: if reference frequency is 38.4,
+	 * use 19.2 because the DPLL automatically divides that by 2.
+	 */
+	if (INTEL_GEN(dev_priv) >= 11 && ref_clock == 38400)
+		ref_clock = 19200;
+
+	return ref_clock;
+}
+
 static bool
 cnl_ddi_calculate_wrpll(int clock,
 			struct drm_i915_private *dev_priv,
···
 
 	cnl_wrpll_get_multipliers(best_div, &pdiv, &qdiv, &kdiv);
 
-	ref_clock = dev_priv->cdclk.hw.ref;
-
-	/*
-	 * For ICL, the spec states: if reference frequency is 38.4, use 19.2
-	 * because the DPLL automatically divides that by 2.
-	 */
-	if (IS_ICELAKE(dev_priv) && ref_clock == 38400)
-		ref_clock = 19200;
+	ref_clock = cnl_hdmi_pll_ref_clock(dev_priv);
 
 	cnl_wrpll_params_populate(wrpll_params, best_dco, ref_clock, pdiv, qdiv,
 				  kdiv);
···
 	  .pdiv = 0x1 /* 2 */, .kdiv = 1, .qdiv_mode = 0, .qdiv_ratio = 0},
 };
 
+static const struct skl_wrpll_params icl_tbt_pll_24MHz_values = {
+	.dco_integer = 0x151, .dco_fraction = 0x4000,
+	.pdiv = 0x4 /* 5 */, .kdiv = 1, .qdiv_mode = 0, .qdiv_ratio = 0,
+};
+
+static const struct skl_wrpll_params icl_tbt_pll_19_2MHz_values = {
+	.dco_integer = 0x1A5, .dco_fraction = 0x7000,
+	.pdiv = 0x4 /* 5 */, .kdiv = 1, .qdiv_mode = 0, .qdiv_ratio = 0,
+};
+
 static bool icl_calc_dp_combo_pll(struct drm_i915_private *dev_priv, int clock,
 				  struct skl_wrpll_params *pll_params)
 {
···
 	return true;
 }
 
+static bool icl_calc_tbt_pll(struct drm_i915_private *dev_priv, int clock,
+			     struct skl_wrpll_params *pll_params)
+{
+	*pll_params = dev_priv->cdclk.hw.ref == 24000 ?
+			icl_tbt_pll_24MHz_values : icl_tbt_pll_19_2MHz_values;
+	return true;
+}
+
 static bool icl_calc_dpll_state(struct intel_crtc_state *crtc_state,
 				struct intel_encoder *encoder, int clock,
 				struct intel_dpll_hw_state *pll_state)
···
 	struct skl_wrpll_params pll_params = { 0 };
 	bool ret;
 
-	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+	if (intel_port_is_tc(dev_priv, encoder->port))
+		ret = icl_calc_tbt_pll(dev_priv, clock, &pll_params);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
 		ret = cnl_ddi_calculate_wrpll(clock, dev_priv, &pll_params);
 	else
 		ret = icl_calc_dp_combo_pll(dev_priv, clock, &pll_params);
···
 
 		for (div2 = 10; div2 > 0; div2--) {
 			int dco = div1 * div2 * clock_khz * 5;
-			int a_divratio, tlinedrv, inputsel, hsdiv;
+			int a_divratio, tlinedrv, inputsel;
+			u32 hsdiv;
 
 			if (dco < dco_min_freq || dco > dco_max_freq)
 				continue;
···
 				MISSING_CASE(div1);
 				/* fall through */
 			case 2:
-				hsdiv = 0;
+				hsdiv = MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_2;
 				break;
 			case 3:
-				hsdiv = 1;
+				hsdiv = MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_3;
 				break;
 			case 5:
-				hsdiv = 2;
+				hsdiv = MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_5;
 				break;
 			case 7:
-				hsdiv = 3;
+				hsdiv = MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_7;
 				break;
 			}
 
···
 			state->mg_clktop2_hsclkctl =
 				MG_CLKTOP2_HSCLKCTL_TLINEDRV_CLKSEL(tlinedrv) |
 				MG_CLKTOP2_HSCLKCTL_CORE_INPUTSEL(inputsel) |
-				MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO(hsdiv) |
+				hsdiv |
 				MG_CLKTOP2_HSCLKCTL_DSDIV_RATIO(div2);
 
 			return true;
···
 icl_get_dpll(struct intel_crtc *crtc, struct intel_crtc_state *crtc_state,
 	     struct intel_encoder *encoder)
 {
+	struct intel_digital_port *intel_dig_port =
+			enc_to_dig_port(&encoder->base);
 	struct intel_shared_dpll *pll;
 	struct intel_dpll_hw_state pll_state = {};
 	enum port port = encoder->port;
···
 	case PORT_D:
 	case PORT_E:
 	case PORT_F:
-		if (0 /* TODO: TBT PLLs */) {
+		if (intel_dig_port->tc_type == TC_PORT_TBT) {
 			min = DPLL_ID_ICL_TBTPLL;
 			max = min;
 			ret = icl_calc_dpll_state(crtc_state, encoder, clock,

drivers/gpu/drm/i915/intel_dpll_mgr.h

···
 			      struct intel_dpll_hw_state *hw_state);
 int icl_calc_dp_combo_pll_link(struct drm_i915_private *dev_priv,
 			       uint32_t pll_id);
+int cnl_hdmi_pll_ref_clock(struct drm_i915_private *dev_priv);
 
 #endif /* _INTEL_DPLL_MGR_H_ */

drivers/gpu/drm/i915/intel_drv.h

···
 	void (*disable_plane)(struct intel_plane *plane,
 			      struct intel_crtc *crtc);
 	bool (*get_hw_state)(struct intel_plane *plane, enum pipe *pipe);
-	int (*check_plane)(struct intel_plane *plane,
-			   struct intel_crtc_state *crtc_state,
-			   struct intel_plane_state *state);
+	int (*check_plane)(struct intel_crtc_state *crtc_state,
+			   struct intel_plane_state *plane_state);
 };
 
 struct intel_watermark_params {
···
 	bool release_cl2_override;
 	uint8_t max_lanes;
 	enum intel_display_power_domain ddi_io_power_domain;
+	enum tc_port_type tc_type;
 
 	void (*write_infoframe)(struct drm_encoder *encoder,
 				const struct intel_crtc_state *crtc_state,
···
 dp_to_lspcon(struct intel_dp *intel_dp)
 {
 	return &dp_to_dig_port(intel_dp)->lspcon;
+}
+
+static inline struct drm_i915_private *
+dp_to_i915(struct intel_dp *intel_dp)
+{
+	return to_i915(dp_to_dig_port(intel_dp)->base.base.dev);
 }
 
 static inline struct intel_digital_port *
···
 			       unsigned int frontbuffer_bits);
 void intel_edp_drrs_flush(struct drm_i915_private *dev_priv,
 			  unsigned int frontbuffer_bits);
+void icl_program_mg_dp_mode(struct intel_dp *intel_dp);
+void icl_enable_phy_clock_gating(struct intel_digital_port *dig_port);
+void icl_disable_phy_clock_gating(struct intel_digital_port *dig_port);
 
 void
 intel_dp_program_link_training_pattern(struct intel_dp *intel_dp,
···
 		      const struct intel_crtc_state *crtc_state);
 void intel_psr_disable(struct intel_dp *intel_dp,
 		      const struct intel_crtc_state *old_crtc_state);
+int intel_psr_set_debugfs_mode(struct drm_i915_private *dev_priv,
+			       struct drm_modeset_acquire_ctx *ctx,
+			       u64 value);
 void intel_psr_invalidate(struct drm_i915_private *dev_priv,
 			  unsigned frontbuffer_bits,
 			  enum fb_op_origin origin);
···
 void intel_psr_init(struct drm_i915_private *dev_priv);
 void intel_psr_compute_config(struct intel_dp *intel_dp,
 			      struct intel_crtc_state *crtc_state);
-void intel_psr_irq_control(struct drm_i915_private *dev_priv, bool debug);
+void intel_psr_irq_control(struct drm_i915_private *dev_priv, u32 debug);
 void intel_psr_irq_handler(struct drm_i915_private *dev_priv, u32 psr_iir);
 void intel_psr_short_pulse(struct intel_dp *intel_dp);
-int intel_psr_wait_for_idle(const struct intel_crtc_state *new_crtc_state);
+int intel_psr_wait_for_idle(const struct intel_crtc_state *new_crtc_state,
+			    u32 *out_value);
 
 /* intel_runtime_pm.c */
 int intel_power_domains_init(struct drm_i915_private *);
-void intel_power_domains_fini(struct drm_i915_private *);
+void intel_power_domains_cleanup(struct drm_i915_private *dev_priv);
 void intel_power_domains_init_hw(struct drm_i915_private *dev_priv, bool resume);
-void intel_power_domains_suspend(struct drm_i915_private *dev_priv);
-void intel_power_domains_verify_state(struct drm_i915_private *dev_priv);
+void intel_power_domains_fini_hw(struct drm_i915_private *dev_priv);
+void intel_power_domains_enable(struct drm_i915_private *dev_priv);
+void intel_power_domains_disable(struct drm_i915_private *dev_priv);
+
+enum i915_drm_suspend_mode {
+	I915_DRM_SUSPEND_IDLE,
+	I915_DRM_SUSPEND_MEM,
+	I915_DRM_SUSPEND_HIBERNATE,
+};
+
+void intel_power_domains_suspend(struct drm_i915_private *dev_priv,
+				 enum i915_drm_suspend_mode);
+void intel_power_domains_resume(struct drm_i915_private *dev_priv);
 void bxt_display_core_init(struct drm_i915_private *dev_priv, bool resume);
 void bxt_display_core_uninit(struct drm_i915_private *dev_priv);
 void intel_runtime_pm_enable(struct drm_i915_private *dev_priv);
+void intel_runtime_pm_disable(struct drm_i915_private *dev_priv);
 const char *
 intel_display_power_domain_str(enum intel_display_power_domain domain);
 
···
 bool intel_runtime_pm_get_if_in_use(struct drm_i915_private *dev_priv);
 void intel_runtime_pm_get_noresume(struct drm_i915_private *dev_priv);
 void intel_runtime_pm_put(struct drm_i915_private *dev_priv);
-
-void intel_display_set_init_power(struct drm_i915_private *dev, bool enable);
 
 void chv_phy_powergate_lanes(struct intel_encoder *encoder,
 			     bool override, unsigned int mask);

drivers/gpu/drm/i915/intel_engine_cs.c

···
 		goto err_unref;
 	}
 
-	ret = i915_vma_pin(vma, 0, 4096, PIN_GLOBAL | PIN_HIGH);
+	ret = i915_vma_pin(vma, 0, 0, PIN_GLOBAL | PIN_HIGH);
 	if (ret)
 		goto err_unref;
 
···
 
 void intel_engine_cleanup_scratch(struct intel_engine_cs *engine)
 {
-	i915_vma_unpin_and_release(&engine->scratch);
-}
-
-static void cleanup_phys_status_page(struct intel_engine_cs *engine)
-{
-	struct drm_i915_private *dev_priv = engine->i915;
-
-	if (!dev_priv->status_page_dmah)
-		return;
-
-	drm_pci_free(&dev_priv->drm, dev_priv->status_page_dmah);
-	engine->status_page.page_addr = NULL;
+	i915_vma_unpin_and_release(&engine->scratch, 0);
 }
 
 static void cleanup_status_page(struct intel_engine_cs *engine)
 {
-	struct i915_vma *vma;
-	struct drm_i915_gem_object *obj;
+	if (HWS_NEEDS_PHYSICAL(engine->i915)) {
+		void *addr = fetch_and_zero(&engine->status_page.page_addr);
 
-	vma = fetch_and_zero(&engine->status_page.vma);
-	if (!vma)
-		return;
+		__free_page(virt_to_page(addr));
+	}
 
-	obj = vma->obj;
-
-	i915_vma_unpin(vma);
-	i915_vma_close(vma);
-
-	i915_gem_object_unpin_map(obj);
-	__i915_gem_object_release_unless_active(obj);
+	i915_vma_unpin_and_release(&engine->status_page.vma,
+				   I915_VMA_RELEASE_MAP);
 }
 
 static int init_status_page(struct intel_engine_cs *engine)
···
 		flags |= PIN_MAPPABLE;
 	else
 		flags |= PIN_HIGH;
-	ret = i915_vma_pin(vma, 0, 4096, flags);
+	ret = i915_vma_pin(vma, 0, 0, flags);
 	if (ret)
 		goto err;
 
···
 
 static int init_phys_status_page(struct intel_engine_cs *engine)
 {
-	struct drm_i915_private *dev_priv = engine->i915;
+	struct page *page;
 
-	GEM_BUG_ON(engine->id != RCS);
-
-	dev_priv->status_page_dmah =
-		drm_pci_alloc(&dev_priv->drm, PAGE_SIZE, PAGE_SIZE);
-	if (!dev_priv->status_page_dmah)
+	/*
+	 * Though the HWS register does support 36bit addresses, historically
+	 * we have had hangs and corruption reported due to wild writes if
+	 * the HWS is placed above 4G.
+	 */
+	page = alloc_page(GFP_KERNEL | __GFP_DMA32 | __GFP_ZERO);
+	if (!page)
 		return -ENOMEM;
 
-	engine->status_page.page_addr = dev_priv->status_page_dmah->vaddr;
-	memset(engine->status_page.page_addr, 0, PAGE_SIZE);
+	engine->status_page.page_addr = page_address(page);
 
 	return 0;
 }
···
 
 	intel_engine_cleanup_scratch(engine);
 
-	if (HWS_NEEDS_PHYSICAL(engine->i915))
-		cleanup_phys_status_page(engine);
-	else
-		cleanup_status_page(engine);
+	cleanup_status_page(engine);
 
 	intel_engine_fini_breadcrumbs(engine);
 	intel_engine_cleanup_cmd_parser(engine);
···
 	POSTING_READ_FW(mode);
 
 	return err;
+}
+
+void intel_engine_cancel_stop_cs(struct intel_engine_cs *engine)
+{
+	struct drm_i915_private *dev_priv = engine->i915;
+
+	GEM_TRACE("%s\n", engine->name);
+
+	I915_WRITE_FW(RING_MI_MODE(engine->mmio_base),
+		      _MASKED_BIT_DISABLE(STOP_RING));
 }
 
 const char *i915_cache_level_str(struct drm_i915_private *i915, int type)
···
 		return true;
 
 	/* Any inflight/incomplete requests? */
-	if (!i915_seqno_passed(intel_engine_get_seqno(engine),
-			       intel_engine_last_submit(engine)))
+	if (!intel_engine_signaled(engine, intel_engine_last_submit(engine)))
 		return false;
 
 	if (I915_SELFTEST_ONLY(engine->breadcrumbs.mock))
···
 
 	if (HAS_EXECLISTS(dev_priv)) {
 		const u32 *hws = &engine->status_page.page_addr[I915_HWS_CSB_BUF0_INDEX];
-		u32 ptr, read, write;
 		unsigned int idx;
+		u8 read, write;
 
 		drm_printf(m, "\tExeclist status: 0x%08x %08x\n",
 			   I915_READ(RING_EXECLIST_STATUS_LO(engine)),
 			   I915_READ(RING_EXECLIST_STATUS_HI(engine)));
 
-		ptr = I915_READ(RING_CONTEXT_STATUS_PTR(engine));
-		read = GEN8_CSB_READ_PTR(ptr);
-		write = GEN8_CSB_WRITE_PTR(ptr);
-		drm_printf(m, "\tExeclist CSB read %d [%d cached], write %d [%d from hws], tasklet queued? %s (%s)\n",
-			   read, execlists->csb_head,
-			   write,
-			   intel_read_status_page(engine, intel_hws_csb_write_index(engine->i915)),
+		read = execlists->csb_head;
+		write = READ_ONCE(*execlists->csb_write);
+
+		drm_printf(m, "\tExeclist CSB read %d, write %d [mmio:%d], tasklet queued? %s (%s)\n",
+			   read, write,
+			   GEN8_CSB_WRITE_PTR(I915_READ(RING_CONTEXT_STATUS_PTR(engine))),
 			   yesno(test_bit(TASKLET_STATE_SCHED,
 					  &engine->execlists.tasklet.state)),
 			   enableddisabled(!atomic_read(&engine->execlists.tasklet.count)));
···
 			write += GEN8_CSB_ENTRIES;
 		while (read < write) {
 			idx = ++read % GEN8_CSB_ENTRIES;
-			drm_printf(m, "\tExeclist CSB[%d]: 0x%08x [0x%08x in hwsp], context: %d [%d in hwsp]\n",
+			drm_printf(m, "\tExeclist CSB[%d]: 0x%08x [mmio:0x%08x], context: %d [mmio:%d]\n",
 				   idx,
-				   I915_READ(RING_CONTEXT_STATUS_BUF_LO(engine, idx)),
 				   hws[idx * 2],
-				   I915_READ(RING_CONTEXT_STATUS_BUF_HI(engine, idx)),
-				   hws[idx * 2 + 1]);
+				   I915_READ(RING_CONTEXT_STATUS_BUF_LO(engine, idx)),
+				   hws[idx * 2 + 1],
+				   I915_READ(RING_CONTEXT_STATUS_BUF_HI(engine, idx)));
 		}
 
 		rcu_read_lock();

drivers/gpu/drm/i915/intel_guc.c

···
 #include "intel_guc_submission.h"
 #include "i915_drv.h"
 
-static void guc_init_ggtt_pin_bias(struct intel_guc *guc);
-
 static void gen8_guc_raise_irq(struct intel_guc *guc)
 {
 	struct drm_i915_private *dev_priv = guc_to_i915(guc);
···
 
 static void guc_fini_wq(struct intel_guc *guc)
 {
-	struct drm_i915_private *dev_priv = guc_to_i915(guc);
+	struct workqueue_struct *wq;
 
-	if (HAS_LOGICAL_RING_PREEMPTION(dev_priv) &&
-	    USES_GUC_SUBMISSION(dev_priv))
-		destroy_workqueue(guc->preempt_wq);
+	wq = fetch_and_zero(&guc->preempt_wq);
+	if (wq)
+		destroy_workqueue(wq);
 
-	destroy_workqueue(guc->log.relay.flush_wq);
+	wq = fetch_and_zero(&guc->log.relay.flush_wq);
+	if (wq)
+		destroy_workqueue(wq);
 }
 
 int intel_guc_init_misc(struct intel_guc *guc)
 {
 	struct drm_i915_private *i915 = guc_to_i915(guc);
 	int ret;
-
-	guc_init_ggtt_pin_bias(guc);
 
 	ret = guc_init_wq(guc);
 	if (ret)
···
 
 	vaddr = i915_gem_object_pin_map(vma->obj, I915_MAP_WB);
 	if (IS_ERR(vaddr)) {
-		i915_vma_unpin_and_release(&vma);
+		i915_vma_unpin_and_release(&vma, 0);
 		return PTR_ERR(vaddr);
 	}
 
···
 
 static void guc_shared_data_destroy(struct intel_guc *guc)
 {
-	i915_gem_object_unpin_map(guc->shared_data->obj);
-	i915_vma_unpin_and_release(&guc->shared_data);
+	i915_vma_unpin_and_release(&guc->shared_data, I915_VMA_RELEASE_MAP);
 }
 
 int intel_guc_init(struct intel_guc *guc)
···
  *
  * ::
  *
- *     +==============> +====================+ <== GUC_GGTT_TOP
- *     ^                |                    |
- *     |                |                    |
- *     |                |        DRAM        |
- *     |                |       Memory       |
- *     |                |                    |
- *    GuC               |                    |
- *  Address  +========> +====================+ <== WOPCM Top
- *   Space   ^          |   HW contexts RSVD |
- *     |     |          |        WOPCM       |
- *     |     |     +==> +--------------------+ <== GuC WOPCM Top
- *     |    GuC    ^    |                    |
- *     |    GGTT   |    |                    |
- *     |    Pin   GuC   |        GuC         |
- *     |    Bias WOPCM  |       WOPCM        |
- *     |     |    Size  |                    |
- *     |     |     |    |                    |
- *     v     v     v    |                    |
- *     +=====+=====+==> +====================+ <== GuC WOPCM Base
- *                      |   Non-GuC WOPCM    |
- *                      |   (HuC/Reserved)   |
- *                      +====================+ <== WOPCM Base
+ *     +===========> +====================+ <== FFFF_FFFF
+ *     ^             |      Reserved      |
+ *     |             +====================+ <== GUC_GGTT_TOP
+ *     |             |                    |
+ *     |             |        DRAM        |
+ *    GuC            |                    |
+ *  Address    +===> +====================+ <== GuC ggtt_pin_bias
+ *   Space     ^     |                    |
+ *     |       |     |                    |
+ *     |      GuC    |        GuC         |
+ *     |     WOPCM   |       WOPCM        |
+ *     |      Size   |                    |
+ *     |       |     |                    |
+ *     v       v     |                    |
+ *     +=======+===> +====================+ <== 0000_0000
  *
- * The lower part of GuC Address Space [0, ggtt_pin_bias) is mapped to WOPCM
+ * The lower part of GuC Address Space [0, ggtt_pin_bias) is mapped to GuC WOPCM
  * while upper part of GuC Address Space [ggtt_pin_bias, GUC_GGTT_TOP) is mapped
- * to DRAM. The value of the GuC ggtt_pin_bias is determined by WOPCM size and
- * actual GuC WOPCM size.
+ * to DRAM. The value of the GuC ggtt_pin_bias is the GuC WOPCM size.
  */
-
-/**
- * guc_init_ggtt_pin_bias() - Initialize the GuC ggtt_pin_bias value.
- * @guc: intel_guc structure.
- *
- * This function will calculate and initialize the ggtt_pin_bias value based on
- * overall WOPCM size and GuC WOPCM size.
- */
-static void guc_init_ggtt_pin_bias(struct intel_guc *guc)
-{
-	struct drm_i915_private *i915 = guc_to_i915(guc);
-
-	GEM_BUG_ON(!i915->wopcm.size);
-	GEM_BUG_ON(i915->wopcm.size < i915->wopcm.guc.base);
-
-	guc->ggtt_pin_bias = i915->wopcm.size - i915->wopcm.guc.base;
-}
 
 /**
  * intel_guc_allocate_vma() - Allocate a GGTT VMA for GuC usage
···
 	struct drm_i915_private *dev_priv = guc_to_i915(guc);
 	struct drm_i915_gem_object *obj;
 	struct i915_vma *vma;
+	u64 flags;
 	int ret;
 
 	obj = i915_gem_object_create(dev_priv, size);
···
 	if (IS_ERR(vma))
 		goto err;
 
-	ret = i915_vma_pin(vma, 0, PAGE_SIZE,
-			   PIN_GLOBAL | PIN_OFFSET_BIAS | guc->ggtt_pin_bias);
+	flags = PIN_GLOBAL | PIN_OFFSET_BIAS | i915_ggtt_pin_bias(vma);
+	ret = i915_vma_pin(vma, 0, 0, flags);
 	if (ret) {
 		vma = ERR_PTR(ret);
 		goto err;
···
 err:
 	i915_gem_object_put(obj);
 	return vma;
+}
+
+/**
+ * intel_guc_reserved_gtt_size()
+ * @guc:	intel_guc structure
+ *
+ * The GuC WOPCM mapping shadows the lower part of the GGTT, so if we are using
+ * GuC we can't have any objects pinned in that region. This function returns
+ * the size of the shadowed region.
+ *
+ * Returns:
+ * 0 if GuC is not present or not in use.
+ * Otherwise, the GuC WOPCM size.
+ */
+u32 intel_guc_reserved_gtt_size(struct intel_guc *guc)
+{
+	return guc_to_i915(guc)->wopcm.guc.size;
 }

drivers/gpu/drm/i915/intel_guc.h

···
 	struct intel_guc_log log;
 	struct intel_guc_ct ct;
 
-	/* Offset where Non-WOPCM memory starts. */
-	u32 ggtt_pin_bias;
-
 	/* Log snapshot if GuC errors during load */
 	struct drm_i915_gem_object *load_err_log;
 
···
  * @vma: i915 graphics virtual memory area.
  *
  * GuC does not allow any gfx GGTT address that falls into range
- * [0, GuC ggtt_pin_bias), which is reserved for Boot ROM, SRAM and WOPCM.
- * Currently, in order to exclude [0, GuC ggtt_pin_bias) address space from
+ * [0, ggtt.pin_bias), which is reserved for Boot ROM, SRAM and WOPCM.
+ * Currently, in order to exclude [0, ggtt.pin_bias) address space from
  * GGTT, all gfx objects used by GuC are allocated with intel_guc_allocate_vma()
- * and pinned with PIN_OFFSET_BIAS along with the value of GuC ggtt_pin_bias.
+ * and pinned with PIN_OFFSET_BIAS along with the value of ggtt.pin_bias.
  *
  * Return: GGTT offset of the @vma.
  */
···
 {
 	u32 offset = i915_ggtt_offset(vma);
 
-	GEM_BUG_ON(offset < guc->ggtt_pin_bias);
+	GEM_BUG_ON(offset < i915_ggtt_pin_bias(vma));
 	GEM_BUG_ON(range_overflows_t(u64, offset, vma->size, GUC_GGTT_TOP));
 
 	return offset;
···
 int intel_guc_suspend(struct intel_guc *guc);
 int intel_guc_resume(struct intel_guc *guc);
 struct i915_vma *intel_guc_allocate_vma(struct intel_guc *guc, u32 size);
+u32 intel_guc_reserved_gtt_size(struct intel_guc *guc);
 
 static inline int intel_guc_sanitize(struct intel_guc *guc)
 {

drivers/gpu/drm/i915/intel_guc_ads.c

···
 
 void intel_guc_ads_destroy(struct intel_guc *guc)
 {
-	i915_vma_unpin_and_release(&guc->ads_vma);
+	i915_vma_unpin_and_release(&guc->ads_vma, 0);
 }

drivers/gpu/drm/i915/intel_guc_ct.c

···
 	return 0;
 
 err_vma:
-	i915_vma_unpin_and_release(&ctch->vma);
+	i915_vma_unpin_and_release(&ctch->vma, 0);
 err_out:
 	CT_DEBUG_DRIVER("CT: channel %d initialization failed; err=%d\n",
 			ctch->owner, err);
···
 static void ctch_fini(struct intel_guc *guc,
 		      struct intel_guc_ct_channel *ctch)
 {
-	GEM_BUG_ON(!ctch->vma);
-
-	i915_gem_object_unpin_map(ctch->vma->obj);
-	i915_vma_unpin_and_release(&ctch->vma);
+	i915_vma_unpin_and_release(&ctch->vma, I915_VMA_RELEASE_MAP);
 }
 
 static int ctch_open(struct intel_guc *guc,

drivers/gpu/drm/i915/intel_guc_fwif.h

···
 #define   WQ_TYPE_BATCH_BUF		(0x1 << WQ_TYPE_SHIFT)
 #define   WQ_TYPE_PSEUDO		(0x2 << WQ_TYPE_SHIFT)
 #define   WQ_TYPE_INORDER		(0x3 << WQ_TYPE_SHIFT)
+#define   WQ_TYPE_NOOP			(0x4 << WQ_TYPE_SHIFT)
 #define WQ_TARGET_SHIFT			10
 #define WQ_LEN_SHIFT			16
 #define WQ_NO_WCFLUSH_WAIT		(1 << 27)

drivers/gpu/drm/i915/intel_guc_log.c

···
 
 void intel_guc_log_destroy(struct intel_guc_log *log)
 {
-	i915_vma_unpin_and_release(&log->vma);
+	i915_vma_unpin_and_release(&log->vma, 0);
 }
 
 int intel_guc_log_set_level(struct intel_guc_log *log, u32 level)

drivers/gpu/drm/i915/intel_guc_submission.c

···
 
 	vaddr = i915_gem_object_pin_map(vma->obj, I915_MAP_WB);
 	if (IS_ERR(vaddr)) {
-		i915_vma_unpin_and_release(&vma);
+		i915_vma_unpin_and_release(&vma, 0);
 		return PTR_ERR(vaddr);
 	}
 
···
 static void guc_stage_desc_pool_destroy(struct intel_guc *guc)
 {
 	ida_destroy(&guc->stage_ids);
-	i915_gem_object_unpin_map(guc->stage_desc_pool->obj);
-	i915_vma_unpin_and_release(&guc->stage_desc_pool);
+	i915_vma_unpin_and_release(&guc->stage_desc_pool, I915_VMA_RELEASE_MAP);
 }
 
 /*
···
 	 */
 	BUILD_BUG_ON(wqi_size != 16);
 
+	/* We expect the WQ to be active if we're appending items to it */
+	GEM_BUG_ON(desc->wq_status != WQ_STATUS_ACTIVE);
+
 	/* Free space is guaranteed. */
 	wq_off = READ_ONCE(desc->tail);
 	GEM_BUG_ON(CIRC_SPACE(wq_off, READ_ONCE(desc->head),
···
 	/* WQ starts from the page after doorbell / process_desc */
 	wqi = client->vaddr + wq_off + GUC_DB_SIZE;
 
-	/* Now fill in the 4-word work queue item */
-	wqi->header = WQ_TYPE_INORDER |
-		      (wqi_len << WQ_LEN_SHIFT) |
-		      (target_engine << WQ_TARGET_SHIFT) |
-		      WQ_NO_WCFLUSH_WAIT;
-	wqi->context_desc = context_desc;
-	wqi->submit_element_info = ring_tail << WQ_RING_TAIL_SHIFT;
-	GEM_BUG_ON(ring_tail > WQ_RING_TAIL_MAX);
-	wqi->fence_id = fence_id;
+	if (I915_SELFTEST_ONLY(client->use_nop_wqi)) {
+		wqi->header = WQ_TYPE_NOOP | (wqi_len << WQ_LEN_SHIFT);
+	} else {
+		/* Now fill in the 4-word work queue item */
+		wqi->header = WQ_TYPE_INORDER |
+			      (wqi_len << WQ_LEN_SHIFT) |
+			      (target_engine << WQ_TARGET_SHIFT) |
+			      WQ_NO_WCFLUSH_WAIT;
+		wqi->context_desc = context_desc;
+		wqi->submit_element_info = ring_tail << WQ_RING_TAIL_SHIFT;
+		GEM_BUG_ON(ring_tail > WQ_RING_TAIL_MAX);
+		wqi->fence_id = fence_id;
+	}
 
 	/* Make the update visible to GuC */
 	WRITE_ONCE(desc->tail, (wq_off + wqi_size) & (GUC_WQ_SIZE - 1));
···
 err_vaddr:
 	i915_gem_object_unpin_map(client->vma->obj);
 err_vma:
-	i915_vma_unpin_and_release(&client->vma);
+	i915_vma_unpin_and_release(&client->vma, 0);
 err_id:
 	ida_simple_remove(&guc->stage_ids, client->stage_id);
 err_client:
···
 {
 	unreserve_doorbell(client);
 	guc_stage_desc_fini(client->guc, client);
-	i915_gem_object_unpin_map(client->vma->obj);
-	i915_vma_unpin_and_release(&client->vma);
+	i915_vma_unpin_and_release(&client->vma, I915_VMA_RELEASE_MAP);
 	ida_simple_remove(&client->guc->stage_ids, client->stage_id);
 	kfree(client);
 }

drivers/gpu/drm/i915/intel_guc_submission.h

···
 #include <linux/spinlock.h>
 
 #include "i915_gem.h"
+#include "i915_selftest.h"
 
 struct drm_i915_private;
 
···
 	spinlock_t wq_lock;
 	/* Per-engine counts of GuC submissions */
 	u64 submissions[I915_NUM_ENGINES];
+
+	/* For testing purposes, use nop WQ items instead of real ones */
+	I915_SELFTEST_DECLARE(bool use_nop_wqi);
 };
 
 int intel_guc_submission_init(struct intel_guc *guc);

drivers/gpu/drm/i915/intel_hangcheck.c

···
 	if (signaller->hangcheck.deadlock >= I915_NUM_ENGINES)
 		return -1;
 
-	if (i915_seqno_passed(intel_engine_get_seqno(signaller), seqno))
+	if (intel_engine_signaled(signaller, seqno))
 		return 1;
 
 	/* cursory check for an unkickable deadlock */

drivers/gpu/drm/i915/intel_hdcp.c

···
 
 	/* PG1 (power well #1) needs to be enabled */
 	for_each_power_well(dev_priv, power_well) {
-		if (power_well->id == id) {
-			enabled = power_well->ops->is_enabled(dev_priv,
-							      power_well);
+		if (power_well->desc->id == id) {
+			enabled = power_well->desc->ops->is_enabled(dev_priv,
+								    power_well);
 			break;
 		}
 	}

drivers/gpu/drm/i915/intel_hdmi.c

···
 static enum drm_connector_status
 intel_hdmi_detect(struct drm_connector *connector, bool force)
 {
-	enum drm_connector_status status;
+	enum drm_connector_status status = connector_status_disconnected;
 	struct drm_i915_private *dev_priv = to_i915(connector->dev);
 	struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
+	struct intel_encoder *encoder = &hdmi_to_dig_port(intel_hdmi)->base;
 
 	DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
 		      connector->base.id, connector->name);
 
 	intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS);
 
+	if (IS_ICELAKE(dev_priv) &&
+	    !intel_digital_port_connected(encoder))
+		goto out;
+
 	intel_hdmi_unset_edid(connector);
 
 	if (intel_hdmi_set_edid(connector))
 		status = connector_status_connected;
-	else
-		status = connector_status_disconnected;
 
+out:
 	intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS);
 
 	if (status != connector_status_connected)

drivers/gpu/drm/i915/intel_huc.c

···
 		return -ENOEXEC;
 
 	vma = i915_gem_object_ggtt_pin(huc->fw.obj, NULL, 0, 0,
-				       PIN_OFFSET_BIAS | guc->ggtt_pin_bias);
+				       PIN_OFFSET_BIAS | i915->ggtt.pin_bias);
 	if (IS_ERR(vma)) {
 		ret = PTR_ERR(vma);
 		DRM_ERROR("HuC: Failed to pin huc fw object %d\n", ret);

drivers/gpu/drm/i915/intel_i2c.c

···
 
 struct gmbus_pin {
 	const char *name;
-	i915_reg_t reg;
+	enum i915_gpio gpio;
 };
 
 /* Map gmbus pin pairs to names and registers. */
···
 	else
 		size = ARRAY_SIZE(gmbus_pins);
 
-	return pin < size &&
-		i915_mmio_reg_valid(get_gmbus_pin(dev_priv, pin)->reg);
+	return pin < size && get_gmbus_pin(dev_priv, pin)->name;
 }
 
 /* Intel GPIO access functions */
···
 
 	algo = &bus->bit_algo;
 
-	bus->gpio_reg = _MMIO(dev_priv->gpio_mmio_base +
-			      i915_mmio_reg_offset(get_gmbus_pin(dev_priv, pin)->reg));
+	bus->gpio_reg = GPIO(get_gmbus_pin(dev_priv, pin)->gpio);
 	bus->adapter.algo_data = algo;
 	algo->setsda = set_data;
 	algo->setscl = set_clock;
···
 	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
 		dev_priv->gpio_mmio_base = VLV_DISPLAY_BASE;
 	else if (!HAS_GMCH_DISPLAY(dev_priv))
-		dev_priv->gpio_mmio_base =
-			i915_mmio_reg_offset(PCH_GPIOA) -
-			i915_mmio_reg_offset(GPIOA);
+		/*
+		 * Broxton uses the same PCH offsets for South Display Engine,
+		 * even though it doesn't have a PCH.
+		 */
+		dev_priv->gpio_mmio_base = PCH_DISPLAY_BASE;
 
 	mutex_init(&dev_priv->gmbus_mutex);
 	init_waitqueue_head(&dev_priv->gmbus_wait_queue);

drivers/gpu/drm/i915/intel_lrc.c

···
 
 	GEM_BUG_ON(execlists->preempt_complete_status !=
 		   upper_32_bits(ce->lrc_desc));
-	GEM_BUG_ON((ce->lrc_reg_state[CTX_CONTEXT_CONTROL + 1] &
-		    _MASKED_BIT_ENABLE(CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT |
-				       CTX_CTRL_ENGINE_CTX_SAVE_INHIBIT)) !=
-		   _MASKED_BIT_ENABLE(CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT |
-				      CTX_CTRL_ENGINE_CTX_SAVE_INHIBIT));
 
 	/*
 	 * Switch to our empty preempt context so
···
 
 static void execlists_context_unpin(struct intel_context *ce)
 {
+	i915_gem_context_unpin_hw_id(ce->gem_context);
+
 	intel_ring_unpin(ce->ring);
 
 	ce->state->obj->pin_global--;
···
 	}
 
 	flags = PIN_GLOBAL | PIN_HIGH;
-	if (ctx->ggtt_offset_bias)
-		flags |= PIN_OFFSET_BIAS | ctx->ggtt_offset_bias;
+	flags |= PIN_OFFSET_BIAS | i915_ggtt_pin_bias(vma);
 
-	return i915_vma_pin(vma, 0, GEN8_LR_CONTEXT_ALIGN, flags);
+	return i915_vma_pin(vma, 0, 0, flags);
 }
 
 static struct intel_context *
···
 		goto unpin_vma;
 	}
 
-	ret = intel_ring_pin(ce->ring, ctx->i915, ctx->ggtt_offset_bias);
+	ret = intel_ring_pin(ce->ring);
 	if (ret)
 		goto unpin_map;
+
+	ret = i915_gem_context_pin_hw_id(ctx);
+	if (ret)
+		goto unpin_ring;
 
 	intel_lr_context_descriptor_update(ctx, engine, ce);
 
···
 	i915_gem_context_get(ctx);
 	return ce;
 
+unpin_ring:
+	intel_ring_unpin(ce->ring);
 unpin_map:
 	i915_gem_object_unpin_map(ce->state->obj);
 unpin_vma:
···
 		goto err;
 	}
 
-	err = i915_vma_pin(vma, 0, PAGE_SIZE, PIN_GLOBAL | PIN_HIGH);
+	err = i915_vma_pin(vma, 0, 0, PIN_GLOBAL | PIN_HIGH);
 	if (err)
 		goto err;
 
···
 
 static void lrc_destroy_wa_ctx(struct intel_engine_cs *engine)
 {
-	i915_vma_unpin_and_release(&engine->wa_ctx.vma);
+	i915_vma_unpin_and_release(&engine->wa_ctx.vma, 0);
 }
 
 typedef u32 *(*wa_bb_func_t)(struct intel_engine_cs *engine, u32 *batch);
···
 
 static int gen8_init_common_ring(struct intel_engine_cs *engine)
 {
-	int ret;
-
-	ret = intel_mocs_init_engine(engine);
-	if (ret)
-		return ret;
+	intel_mocs_init_engine(engine);
 
 	intel_engine_reset_breadcrumbs(engine);
 
···
 	struct i915_request *request, *active;
 	unsigned long flags;
 
-	GEM_TRACE("%s\n", engine->name);
+	GEM_TRACE("%s: depth<-%d\n", engine->name,
+		  atomic_read(&execlists->tasklet.count));
 
 	/*
 	 * Prevent request submission to the hardware until we have
···
 {
 	struct intel_engine_execlists * const execlists = &engine->execlists;
 
-	/* After a GPU reset, we may have requests to replay */
-	if (!RB_EMPTY_ROOT(&execlists->queue.rb_root))
-		tasklet_schedule(&execlists->tasklet);
-
 	/*
-	 * Flush the tasklet while we still have the forcewake to be sure
-	 * that it is not allowed to sleep before we restart and reload a
-	 * context.
+	 * After a GPU reset, we may have requests to replay. Do so now while
+	 * we still have the forcewake to be sure that the GPU is not allowed
+	 * to sleep before we restart and reload a context.
 	 *
-	 * As before (with execlists_reset_prepare) we rely on the caller
-	 * serialising multiple attempts to reset so that we know that we
-	 * are the only one manipulating tasklet state.
 	 */
-	__tasklet_enable_sync_once(&execlists->tasklet);
+	if (!RB_EMPTY_ROOT(&execlists->queue.rb_root))
+		execlists->tasklet.func(execlists->tasklet.data);
 
-	GEM_TRACE("%s\n", engine->name);
+	tasklet_enable(&execlists->tasklet);
+	GEM_TRACE("%s: depth->%d\n", engine->name,
+		  atomic_read(&execlists->tasklet.count));
 }
 
 static int intel_logical_ring_emit_pdps(struct i915_request *rq)
···
 
 	/* FIXME(BDW): Address space and security selectors. */
 	*cs++ = MI_BATCH_BUFFER_START_GEN8 |
-		(flags & I915_DISPATCH_SECURE ? 0 : BIT(8)) |
-		(flags & I915_DISPATCH_RS ? MI_BATCH_RESOURCE_STREAMER : 0);
+		(flags & I915_DISPATCH_SECURE ? 0 : BIT(8));
 	*cs++ = lower_32_bits(offset);
 	*cs++ = upper_32_bits(offset);
 
···
 static u32
 make_rpcs(struct drm_i915_private *dev_priv)
 {
+	bool subslice_pg = INTEL_INFO(dev_priv)->sseu.has_subslice_pg;
+	u8 slices = hweight8(INTEL_INFO(dev_priv)->sseu.slice_mask);
+	u8 subslices = hweight8(INTEL_INFO(dev_priv)->sseu.subslice_mask[0]);
 	u32 rpcs = 0;
 
 	/*
···
 		return 0;
 
 	/*
+	 * Since the SScount bitfield in GEN8_R_PWR_CLK_STATE is only three bits
+	 * wide and Icelake has up to eight subslices, specfial programming is
+	 * needed in order to correctly enable all subslices.
+	 *
+	 * According to documentation software must consider the configuration
+	 * as 2x4x8 and hardware will translate this to 1x8x8.
+	 *
+	 * Furthemore, even though SScount is three bits, maximum documented
+	 * value for it is four. From this some rules/restrictions follow:
+	 *
+	 * 1.
+	 * If enabled subslice count is greater than four, two whole slices must
+	 * be enabled instead.
+	 *
+	 * 2.
+	 * When more than one slice is enabled, hardware ignores the subslice
+	 * count altogether.
+	 *
+	 * From these restrictions it follows that it is not possible to enable
+	 * a count of subslices between the SScount maximum of four restriction,
+	 * and the maximum available number on a particular SKU. Either all
+	 * subslices are enabled, or a count between one and four on the first
+	 * slice.
+	 */
+	if (IS_GEN11(dev_priv) && slices == 1 && subslices >= 4) {
+		GEM_BUG_ON(subslices & 1);
+
+		subslice_pg = false;
+		slices *= 2;
+	}
+
+	/*
 	 * Starting in Gen9, render power gating can leave
 	 * slice/subslice/EU in a partially enabled state. We
 	 * must make an explicit request through RPCS for full
 	 * enablement.
 	*/
 	if (INTEL_INFO(dev_priv)->sseu.has_slice_pg) {
-		rpcs |= GEN8_RPCS_S_CNT_ENABLE;
-		rpcs |= hweight8(INTEL_INFO(dev_priv)->sseu.slice_mask) <<
-			GEN8_RPCS_S_CNT_SHIFT;
-		rpcs |= GEN8_RPCS_ENABLE;
+		u32 mask, val = slices;
+
+		if (INTEL_GEN(dev_priv) >= 11) {
+			mask = GEN11_RPCS_S_CNT_MASK;
+			val <<= GEN11_RPCS_S_CNT_SHIFT;
+		} else {
+			mask = GEN8_RPCS_S_CNT_MASK;
+			val <<= GEN8_RPCS_S_CNT_SHIFT;
+		}
+
+		GEM_BUG_ON(val & ~mask);
+		val &= mask;
+
+		rpcs |= GEN8_RPCS_ENABLE | GEN8_RPCS_S_CNT_ENABLE | val;
 	}
 
-	if (INTEL_INFO(dev_priv)->sseu.has_subslice_pg) {
-		rpcs |= GEN8_RPCS_SS_CNT_ENABLE;
-		rpcs |= hweight8(INTEL_INFO(dev_priv)->sseu.subslice_mask[0]) <<
-			GEN8_RPCS_SS_CNT_SHIFT;
-		rpcs |= GEN8_RPCS_ENABLE;
+	if (subslice_pg) {
+		u32 val = subslices;
+
+		val <<= GEN8_RPCS_SS_CNT_SHIFT;
+
+		GEM_BUG_ON(val & ~GEN8_RPCS_SS_CNT_MASK);
+		val &= GEN8_RPCS_SS_CNT_MASK;
+
+		rpcs |= GEN8_RPCS_ENABLE | GEN8_RPCS_SS_CNT_ENABLE | val;
 	}
 
 	if (INTEL_INFO(dev_priv)->sseu.has_eu_pg) {
-		rpcs |= INTEL_INFO(dev_priv)->sseu.eu_per_subslice <<
-			GEN8_RPCS_EU_MIN_SHIFT;
-		rpcs |= INTEL_INFO(dev_priv)->sseu.eu_per_subslice <<
-			GEN8_RPCS_EU_MAX_SHIFT;
+		u32 val;
+
+		val = INTEL_INFO(dev_priv)->sseu.eu_per_subslice <<
+		      GEN8_RPCS_EU_MIN_SHIFT;
+		GEM_BUG_ON(val & ~GEN8_RPCS_EU_MIN_MASK);
+		val &= GEN8_RPCS_EU_MIN_MASK;
+
+		rpcs |= val;
+
+		val = INTEL_INFO(dev_priv)->sseu.eu_per_subslice <<
+		      GEN8_RPCS_EU_MAX_SHIFT;
+		GEM_BUG_ON(val & ~GEN8_RPCS_EU_MAX_MASK);
+		val &= GEN8_RPCS_EU_MAX_MASK;
+
+		rpcs |= val;
+
 		rpcs |= GEN8_RPCS_ENABLE;
 	}
 
···
 				 MI_LRI_FORCE_POSTED;
 
 	CTX_REG(regs, CTX_CONTEXT_CONTROL, RING_CONTEXT_CONTROL(engine),
-		_MASKED_BIT_DISABLE(CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT |
-				    CTX_CTRL_ENGINE_CTX_SAVE_INHIBIT) |
-		_MASKED_BIT_ENABLE(CTX_CTRL_INHIBIT_SYN_CTX_SWITCH |
-				   (HAS_RESOURCE_STREAMER(dev_priv) ?
-				   CTX_CTRL_RS_CTX_ENABLE : 0)));
+		_MASKED_BIT_DISABLE(CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT) |
+		_MASKED_BIT_ENABLE(CTX_CTRL_INHIBIT_SYN_CTX_SWITCH));
+	if (INTEL_GEN(dev_priv) < 11) {
+		regs[CTX_CONTEXT_CONTROL + 1] |=
+			_MASKED_BIT_DISABLE(CTX_CTRL_ENGINE_CTX_SAVE_INHIBIT |
+					    CTX_CTRL_RS_CTX_ENABLE);
+	}
 	CTX_REG(regs, CTX_RING_HEAD, RING_HEAD(base), 0);
 	CTX_REG(regs, CTX_RING_TAIL, RING_TAIL(base), 0);
 	CTX_REG(regs, CTX_RING_BUFFER_START, RING_START(base), 0);
···
 
 		i915_oa_init_reg_state(engine, ctx, regs);
 	}
+
+	regs[CTX_END] = MI_BATCH_BUFFER_END;
+	if (INTEL_GEN(dev_priv) >= 10)
+		regs[CTX_END] |= BIT(0);
 }
 
 static int

drivers/gpu/drm/i915/intel_lrc.h

···
 #include "intel_ringbuffer.h"
 #include "i915_gem_context.h"
 
-#define GEN8_LR_CONTEXT_ALIGN I915_GTT_MIN_ALIGNMENT
-
 /* Execlists regs */
 #define RING_ELSP(engine)			_MMIO((engine)->mmio_base + 0x230)
 #define RING_EXECLIST_STATUS_LO(engine)		_MMIO((engine)->mmio_base + 0x234)

drivers/gpu/drm/i915/intel_lrc_reg.h

···
 #define CTX_PDP0_LDW			0x32
 #define CTX_LRI_HEADER_2		0x41
 #define CTX_R_PWR_CLK_STATE		0x42
-#define CTX_GPGPU_CSR_BASE_ADDRESS	0x44
+#define CTX_END				0x44
 
 #define CTX_REG(reg_state, pos, reg, val) do { \
 	u32 *reg_state__ = (reg_state); \

drivers/gpu/drm/i915/intel_mocs.c

···
  *
  * This function simply emits a MI_LOAD_REGISTER_IMM command for the
  * given table starting at the given address.
- *
- * Return: 0 on success, otherwise the error status.
  */
-int intel_mocs_init_engine(struct intel_engine_cs *engine)
+void intel_mocs_init_engine(struct intel_engine_cs *engine)
 {
 	struct drm_i915_private *dev_priv = engine->i915;
 	struct drm_i915_mocs_table table;
 	unsigned int index;
 
 	if (!get_mocs_settings(dev_priv, &table))
-		return 0;
+		return;
 
-	if (WARN_ON(table.size > GEN9_NUM_MOCS_ENTRIES))
-		return -ENODEV;
+	GEM_BUG_ON(table.size > GEN9_NUM_MOCS_ENTRIES);
 
 	for (index = 0; index < table.size; index++)
 		I915_WRITE(mocs_register(engine->id, index),
···
 	for (; index < GEN9_NUM_MOCS_ENTRIES; index++)
 		I915_WRITE(mocs_register(engine->id, index),
 			   table.table[0].control_value);
-
-	return 0;
 }
 
 /**

drivers/gpu/drm/i915/intel_mocs.h

···
 
 int intel_rcs_context_init_mocs(struct i915_request *rq);
 void intel_mocs_init_l3cc_table(struct drm_i915_private *dev_priv);
-int intel_mocs_init_engine(struct intel_engine_cs *engine);
+void intel_mocs_init_engine(struct intel_engine_cs *engine);
 
 #endif

drivers/gpu/drm/i915/intel_pm.c

···
  */
 
 #include <linux/cpufreq.h>
+#include <linux/pm_runtime.h>
 #include <drm/drm_plane_helper.h>
 #include "i915_drv.h"
 #include "intel_drv.h"
···
 		unsigned int latency = wm[level];
 
 		if (latency == 0) {
-			DRM_ERROR("%s WM%d latency not provided\n",
-				  name, level);
+			DRM_DEBUG_KMS("%s WM%d latency not provided\n",
+				      name, level);
 			continue;
 		}
 
···
 	return true;
 }
 
-static unsigned int intel_get_ddb_size(struct drm_i915_private *dev_priv,
-				       const struct intel_crtc_state *cstate,
-				       const unsigned int total_data_rate,
-				       const int num_active,
-				       struct skl_ddb_allocation *ddb)
+static u16 intel_get_ddb_size(struct drm_i915_private *dev_priv,
+			      const struct intel_crtc_state *cstate,
+			      const unsigned int total_data_rate,
+			      const int num_active,
+			      struct skl_ddb_allocation *ddb)
 {
 	const struct drm_display_mode *adjusted_mode;
 	u64 total_data_bw;
···
 	struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	struct drm_crtc *for_crtc = cstate->base.crtc;
-	unsigned int pipe_size, ddb_size;
-	int nth_active_pipe;
+	const struct drm_crtc_state *crtc_state;
+	const struct drm_crtc *crtc;
+	u32 pipe_width = 0, total_width = 0, width_before_pipe = 0;
+	enum pipe for_pipe = to_intel_crtc(for_crtc)->pipe;
+	u16 ddb_size;
+	u32 i;
 
 	if (WARN_ON(!state) || !cstate->base.active) {
 		alloc->start = 0;
···
 				      *num_active, ddb);
 
 	/*
-	 * If the state doesn't change the active CRTC's, then there's
-	 * no need to recalculate; the existing pipe allocation limits
-	 * should remain unchanged.  Note that we're safe from racing
-	 * commits since any racing commit that changes the active CRTC
-	 * list would need to grab _all_ crtc locks, including the one
-	 * we currently hold.
+	 * If the state doesn't change the active CRTC's or there is no
+	 * modeset request, then there's no need to recalculate;
+	 * the existing pipe allocation limits should remain unchanged.
+	 * Note that we're safe from racing commits since any racing commit
+	 * that changes the active CRTC list or do modeset would need to
+	 * grab _all_ crtc locks, including the one we currently hold.
 	 */
-	if (!intel_state->active_pipe_changes) {
+	if (!intel_state->active_pipe_changes && !intel_state->modeset) {
 		/*
 		 * alloc may be cleared by clear_intel_crtc_state,
 		 * copy from old state to be sure
···
 		return;
 	}
 
-	nth_active_pipe = hweight32(intel_state->active_crtcs &
-				    (drm_crtc_mask(for_crtc) - 1));
-	pipe_size = ddb_size / hweight32(intel_state->active_crtcs);
-	alloc->start = nth_active_pipe * ddb_size / *num_active;
-	alloc->end = alloc->start + pipe_size;
+	/*
+	 * Watermark/ddb requirement highly depends upon width of the
+	 * framebuffer, So instead of allocating DDB equally among pipes
+	 * distribute DDB based on resolution/width of the display.
+	 */
+	for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
+		const struct drm_display_mode *adjusted_mode;
+		int hdisplay, vdisplay;
+		enum pipe pipe;
+
+		if (!crtc_state->enable)
+			continue;
+
+		pipe = to_intel_crtc(crtc)->pipe;
+		adjusted_mode = &crtc_state->adjusted_mode;
+		drm_mode_get_hv_timing(adjusted_mode, &hdisplay, &vdisplay);
+		total_width += hdisplay;
+
+		if (pipe < for_pipe)
+			width_before_pipe += hdisplay;
+		else if (pipe == for_pipe)
+			pipe_width = hdisplay;
+	}
+
+	alloc->start = ddb_size * width_before_pipe / total_width;
+	alloc->end = ddb_size * (width_before_pipe + pipe_width) / total_width;
 }
 
 static unsigned int skl_cursor_allocation(int num_active)
···
 				      val & PLANE_CTL_ALPHA_MASK);
 
 	val = I915_READ(PLANE_BUF_CFG(pipe, plane_id));
-	val2 = I915_READ(PLANE_NV12_BUF_CFG(pipe, plane_id));
+	/*
+	 * FIXME: add proper NV12 support for ICL. Avoid reading unclaimed
+	 * registers for now.
+	 */
+	if (INTEL_GEN(dev_priv) < 11)
+		val2 = I915_READ(PLANE_NV12_BUF_CFG(pipe, plane_id));
 
 	if (fourcc == DRM_FORMAT_NV12) {
 		skl_ddb_entry_init_from_hw(dev_priv,
···
 
 	skl_ddb_entry_write(dev_priv, PLANE_BUF_CFG(pipe, plane_id),
 			    &ddb->plane[pipe][plane_id]);
+	/* FIXME: add proper NV12 support for ICL. */
 	if (INTEL_GEN(dev_priv) >= 11)
 		return skl_ddb_entry_write(dev_priv,
 					   PLANE_BUF_CFG(pipe, plane_id),
···
 }
 
 static void
-skl_copy_ddb_for_pipe(struct skl_ddb_values *dst,
-		      struct skl_ddb_values *src,
-		      enum pipe pipe)
-{
-	memcpy(dst->ddb.uv_plane[pipe], src->ddb.uv_plane[pipe],
-	       sizeof(dst->ddb.uv_plane[pipe]));
-	memcpy(dst->ddb.plane[pipe], src->ddb.plane[pipe],
-	       sizeof(dst->ddb.plane[pipe]));
-}
-
-static void
 skl_print_wm_changes(const struct drm_atomic_state *state)
 {
 	const struct drm_device *dev = state->dev;
···
 	 * any other display updates race with this transaction, so we need
 	 * to grab the lock on *all* CRTC's.
 	 */
-	if (intel_state->active_pipe_changes) {
+	if (intel_state->active_pipe_changes || intel_state->modeset) {
 		realloc_pipes = ~0;
 		intel_state->wm_results.dirty_pipes = ~0;
 	}
···
 	if (cstate->base.active_changed)
 		skl_atomic_update_crtc_wm(state, cstate);
 
-	skl_copy_ddb_for_pipe(hw_vals, results, pipe);
+	memcpy(hw_vals->ddb.uv_plane[pipe], results->ddb.uv_plane[pipe],
+	       sizeof(hw_vals->ddb.uv_plane[pipe]));
+	memcpy(hw_vals->ddb.plane[pipe], results->ddb.plane[pipe],
+	       sizeof(hw_vals->ddb.plane[pipe]));
 
 	mutex_unlock(&dev_priv->wm.wm_mutex);
 }
···
 		new_power = HIGH_POWER;
 	rps_set_power(dev_priv, new_power);
 	mutex_unlock(&rps->power.mutex);
-	rps->last_adj = 0;
 }
 
 void intel_rps_mark_interactive(struct drm_i915_private *i915, bool interactive)
···
 	 */
 	if (!sanitize_rc6(dev_priv)) {
 		DRM_INFO("RC6 disabled, disabling runtime PM support\n");
-		intel_runtime_pm_get(dev_priv);
+		pm_runtime_get(&dev_priv->drm.pdev->dev);
 	}
 
 	mutex_lock(&dev_priv->pcu_lock);
···
 		valleyview_cleanup_gt_powersave(dev_priv);
 
 	if (!HAS_RC6(dev_priv))
-		intel_runtime_pm_put(dev_priv);
+		pm_runtime_put(&dev_priv->drm.pdev->dev);
 }
 
 /**
···
 
 	if (INTEL_GEN(dev_priv) >= 11)
 		gen11_reset_rps_interrupts(dev_priv);
-	else
+	else if (INTEL_GEN(dev_priv) >= 6)
 		gen6_reset_rps_interrupts(dev_priv);
 }
 

drivers/gpu/drm/i915/intel_psr.c

···
 #include "intel_drv.h"
 #include "i915_drv.h"
 
-void intel_psr_irq_control(struct drm_i915_private *dev_priv, bool debug)
+static bool psr_global_enabled(u32 debug)
+{
+	switch (debug & I915_PSR_DEBUG_MODE_MASK) {
+	case I915_PSR_DEBUG_DEFAULT:
+		return i915_modparams.enable_psr;
+	case I915_PSR_DEBUG_DISABLE:
+		return false;
+	default:
+		return true;
+	}
+}
+
+static bool intel_psr2_enabled(struct drm_i915_private *dev_priv,
+			       const struct intel_crtc_state *crtc_state)
+{
+	switch (dev_priv->psr.debug & I915_PSR_DEBUG_MODE_MASK) {
+	case I915_PSR_DEBUG_FORCE_PSR1:
+		return false;
+	default:
+		return crtc_state->has_psr2;
+	}
+}
+
+void intel_psr_irq_control(struct drm_i915_private *dev_priv, u32 debug)
 {
 	u32 debug_mask, mask;
 
···
 			      EDP_PSR_PRE_ENTRY(TRANSCODER_C);
 	}
 
-	if (debug)
+	if (debug & I915_PSR_DEBUG_IRQ)
 		mask |= debug_mask;
 
-	WRITE_ONCE(dev_priv->psr.debug, debug);
 	I915_WRITE(EDP_PSR_IMR, ~mask);
 }
 
···
 	dev_priv->psr.sink_sync_latency =
 		intel_dp_get_sink_sync_latency(intel_dp);
 
+	WARN_ON(dev_priv->psr.dp);
+	dev_priv->psr.dp = intel_dp;
+
 	if (INTEL_GEN(dev_priv) >= 9 &&
 	    (intel_dp->psr_dpcd[0] == DP_PSR2_WITH_Y_COORD_IS_SUPPORTED)) {
 		bool y_req = intel_dp->psr_dpcd[1] &
···
 				const struct intel_crtc_state *crtc_state)
 {
 	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
-	struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev);
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	struct edp_vsc_psr psr_vsc;
 
 	if (dev_priv->psr.psr2_enabled) {
···
 
 static void hsw_psr_setup_aux(struct intel_dp *intel_dp)
 {
-	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
-	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	u32 aux_clock_divider, aux_ctl;
 	int i;
 	static const uint8_t aux_msg[] = {
···
 
 static void intel_psr_enable_sink(struct intel_dp *intel_dp)
 {
-	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
-	struct drm_device *dev = dig_port->base.base.dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	u8 dpcd_val = DP_PSR_ENABLE;
 
 	/* Enable ALPM at sink for psr2 */
···
 
 static void hsw_activate_psr1(struct intel_dp *intel_dp)
 {
-	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
-	struct drm_device *dev = dig_port->base.base.dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	u32 max_sleep_time = 0x1f;
 	u32 val = EDP_PSR_ENABLE;
 
···
 
 static void hsw_activate_psr2(struct intel_dp *intel_dp)
 {
-	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
-	struct drm_device *dev = dig_port->base.base.dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	u32 val;
 
 	/* Let's use 6 as the minimum to cover all known cases including the
···
 static bool intel_psr2_config_valid(struct intel_dp *intel_dp,
 				    struct intel_crtc_state *crtc_state)
 {
-	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
-	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	int crtc_hdisplay = crtc_state->base.adjusted_mode.crtc_hdisplay;
 	int crtc_vdisplay = crtc_state->base.adjusted_mode.crtc_vdisplay;
 	int psr_max_h = 0, psr_max_v = 0;
···
 			      struct intel_crtc_state *crtc_state)
 {
 	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
-	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	const struct drm_display_mode *adjusted_mode =
 		&crtc_state->base.adjusted_mode;
 	int psr_setup_time;
···
 	if (!CAN_PSR(dev_priv))
 		return;
 
-	if (!i915_modparams.enable_psr) {
-		DRM_DEBUG_KMS("PSR disable by flag\n");
+	if (intel_dp != dev_priv->psr.dp)
 		return;
-	}
 
 	/*
 	 * HSW spec explicitly says PSR is tied to port A.
···
 
 	crtc_state->has_psr = true;
 	crtc_state->has_psr2 = intel_psr2_config_valid(intel_dp, crtc_state);
-	DRM_DEBUG_KMS("Enabling PSR%s\n", crtc_state->has_psr2 ? "2" : "");
 }
 
 static void intel_psr_activate(struct intel_dp *intel_dp)
 {
-	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
-	struct drm_device *dev = intel_dig_port->base.base.dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
 	if (INTEL_GEN(dev_priv) >= 9)
 		WARN_ON(I915_READ(EDP_PSR2_CTL) & EDP_PSR2_ENABLE);
···
 static void intel_psr_enable_source(struct intel_dp *intel_dp,
 				    const struct intel_crtc_state *crtc_state)
 {
-	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
-	struct drm_device *dev = dig_port->base.base.dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
 
 	/* Only HSW and BDW have PSR AUX registers that need to be setup. SKL+
···
 	}
 }
 
+static void intel_psr_enable_locked(struct drm_i915_private *dev_priv,
+				    const struct intel_crtc_state *crtc_state)
+{
+	struct intel_dp *intel_dp = dev_priv->psr.dp;
+
+	if (dev_priv->psr.enabled)
+		return;
+
+	DRM_DEBUG_KMS("Enabling PSR%s\n",
+		      dev_priv->psr.psr2_enabled ? "2" : "1");
+	intel_psr_setup_vsc(intel_dp, crtc_state);
+	intel_psr_enable_sink(intel_dp);
+	intel_psr_enable_source(intel_dp, crtc_state);
+	dev_priv->psr.enabled = true;
+
+	intel_psr_activate(intel_dp);
+}
+
 /**
  * intel_psr_enable - Enable PSR
  * @intel_dp: Intel DP
···
 void intel_psr_enable(struct intel_dp *intel_dp,
 		      const struct intel_crtc_state *crtc_state)
 {
-	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
-	struct drm_device *dev = intel_dig_port->base.base.dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
 	if (!crtc_state->has_psr)
 		return;
···
 		return;
 
 	WARN_ON(dev_priv->drrs.dp);
+
 	mutex_lock(&dev_priv->psr.lock);
-	if (dev_priv->psr.enabled) {
+	if (dev_priv->psr.prepared) {
 		DRM_DEBUG_KMS("PSR already in use\n");
 		goto unlock;
 	}
 
-	dev_priv->psr.psr2_enabled = crtc_state->has_psr2;
+	dev_priv->psr.psr2_enabled = intel_psr2_enabled(dev_priv, crtc_state);
 	dev_priv->psr.busy_frontbuffer_bits = 0;
+	dev_priv->psr.prepared = true;
 
-	intel_psr_setup_vsc(intel_dp, crtc_state);
-	intel_psr_enable_sink(intel_dp);
-	intel_psr_enable_source(intel_dp, crtc_state);
-	dev_priv->psr.enabled = intel_dp;
-
-	intel_psr_activate(intel_dp);
+	if (psr_global_enabled(dev_priv->psr.debug))
+		intel_psr_enable_locked(dev_priv, crtc_state);
+	else
+		DRM_DEBUG_KMS("PSR disabled by flag\n");
 
 unlock:
 	mutex_unlock(&dev_priv->psr.lock);
···
 static void
 intel_psr_disable_source(struct intel_dp *intel_dp)
 {
-	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
-	struct drm_device *dev = intel_dig_port->base.base.dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
 	if (dev_priv->psr.active) {
 		i915_reg_t psr_status;
···
 
 static void intel_psr_disable_locked(struct intel_dp *intel_dp)
 {
-	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
-	struct drm_device *dev = intel_dig_port->base.base.dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
 	lockdep_assert_held(&dev_priv->psr.lock);
 
 	if (!dev_priv->psr.enabled)
 		return;
 
+	DRM_DEBUG_KMS("Disabling PSR%s\n",
+		      dev_priv->psr.psr2_enabled ? "2" : "1");
 	intel_psr_disable_source(intel_dp);
 
 	/* Disable PSR on Sink */
 	drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, 0);
 
-	dev_priv->psr.enabled = NULL;
+	dev_priv->psr.enabled = false;
 }
 
 /**
···
 void intel_psr_disable(struct intel_dp *intel_dp,
 		       const struct intel_crtc_state *old_crtc_state)
 {
-	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
-	struct drm_device *dev = intel_dig_port->base.base.dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
 	if (!old_crtc_state->has_psr)
 		return;
···
 		return;
 
 	mutex_lock(&dev_priv->psr.lock);
+	if (!dev_priv->psr.prepared) {
+		mutex_unlock(&dev_priv->psr.lock);
+		return;
+	}
+
 	intel_psr_disable_locked(intel_dp);
+
+	dev_priv->psr.prepared = false;
 	mutex_unlock(&dev_priv->psr.lock);
 	cancel_work_sync(&dev_priv->psr.work);
 }
 
-int intel_psr_wait_for_idle(const struct intel_crtc_state *new_crtc_state)
+/**
+ * intel_psr_wait_for_idle - wait for PSR1 to idle
+ * @new_crtc_state: new CRTC state
+ * @out_value: PSR status in case of failure
+ *
+ * This function is expected to be called from pipe_update_start() where it is
+ * not expected to race with PSR enable or disable.
+ *
+ * Returns: 0 on success or -ETIMEOUT if PSR status does not idle.
+ */
+int intel_psr_wait_for_idle(const struct intel_crtc_state *new_crtc_state,
+			    u32 *out_value)
 {
 	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->base.crtc);
 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	i915_reg_t reg;
-	u32 mask;
 
-	if (!new_crtc_state->has_psr)
+	if (!dev_priv->psr.enabled || !new_crtc_state->has_psr)
+		return 0;
+
+	/* FIXME: Update this for PSR2 if we need to wait for idle */
+	if (READ_ONCE(dev_priv->psr.psr2_enabled))
 		return 0;
 
 	/*
-	 * The sole user right now is intel_pipe_update_start(),
-	 * which won't race with psr_enable/disable, which is
-	 * where psr2_enabled is written to. So, we don't need
-	 * to acquire the psr.lock. More importantly, we want the
-	 * latency inside intel_pipe_update_start() to be as low
-	 * as possible, so no need to acquire psr.lock when it is
-	 * not needed and will induce latencies in the atomic
-	 * update path.
+	 * From bspec: Panel Self Refresh (BDW+)
+	 * Max. time for PSR to idle = Inverse of the refresh rate + 6 ms of
+	 * exit training time + 1.5 ms of aux channel handshake. 50 ms is
+	 * defensive enough to cover everything.
 	 */
-	if (dev_priv->psr.psr2_enabled) {
-		reg = EDP_PSR2_STATUS;
-		mask = EDP_PSR2_STATUS_STATE_MASK;
-	} else {
-		reg = EDP_PSR_STATUS;
-		mask = EDP_PSR_STATUS_STATE_MASK;
-	}
 
-	/*
-	 * Max time for PSR to idle = Inverse of the refresh rate +
-	 * 6 ms of exit training time + 1.5 ms of aux channel
-	 * handshake. 50 msec is defesive enough to cover everything.
-	 */
-	return intel_wait_for_register(dev_priv, reg, mask,
-				       EDP_PSR_STATUS_STATE_IDLE, 50);
+	return __intel_wait_for_register(dev_priv, EDP_PSR_STATUS,
+					 EDP_PSR_STATUS_STATE_MASK,
+					 EDP_PSR_STATUS_STATE_IDLE, 2, 50,
+					 out_value);
 }
 
 static bool __psr_wait_for_idle_locked(struct drm_i915_private *dev_priv)
 {
-	struct intel_dp *intel_dp;
 	i915_reg_t reg;
 	u32 mask;
 	int err;
 
-	intel_dp = dev_priv->psr.enabled;
-	if (!intel_dp)
+	if (!dev_priv->psr.enabled)
 		return false;
 
 	if (dev_priv->psr.psr2_enabled) {
···
 	/* After the unlocked wait, verify that PSR is still wanted! */
 	mutex_lock(&dev_priv->psr.lock);
 	return err == 0 && dev_priv->psr.enabled;
+}
+
+static bool switching_psr(struct drm_i915_private *dev_priv,
+			  struct intel_crtc_state *crtc_state,
+			  u32 mode)
+{
+	/* Can't switch psr state anyway if PSR2 is not supported. */
+	if (!crtc_state || !crtc_state->has_psr2)
+		return false;
+
+	if (dev_priv->psr.psr2_enabled && mode == I915_PSR_DEBUG_FORCE_PSR1)
+		return true;
+
+	if (!dev_priv->psr.psr2_enabled && mode != I915_PSR_DEBUG_FORCE_PSR1)
+		return true;
+
+	return false;
+}
+
+int intel_psr_set_debugfs_mode(struct drm_i915_private *dev_priv,
+			       struct drm_modeset_acquire_ctx *ctx,
+			       u64 val)
+{
+	struct drm_device *dev = &dev_priv->drm;
+	struct drm_connector_state *conn_state;
+	struct intel_crtc_state *crtc_state = NULL;
+	struct drm_crtc_commit *commit;
+	struct drm_crtc *crtc;
+	struct intel_dp *dp;
+	int ret;
+	bool enable;
+	u32 mode = val & I915_PSR_DEBUG_MODE_MASK;
+
+	if (val & ~(I915_PSR_DEBUG_IRQ | I915_PSR_DEBUG_MODE_MASK) ||
+	    mode > I915_PSR_DEBUG_FORCE_PSR1) {
+		DRM_DEBUG_KMS("Invalid debug mask %llx\n", val);
+		return -EINVAL;
+	}
+
+	ret = drm_modeset_lock(&dev->mode_config.connection_mutex, ctx);
+	if (ret)
+		return ret;
+
+	/* dev_priv->psr.dp should be set once and then never touched again. */
+	dp = READ_ONCE(dev_priv->psr.dp);
+	conn_state = dp->attached_connector->base.state;
+	crtc = conn_state->crtc;
+	if (crtc) {
+		ret = drm_modeset_lock(&crtc->mutex, ctx);
+		if (ret)
+			return ret;
+
+		crtc_state = to_intel_crtc_state(crtc->state);
+		commit = crtc_state->base.commit;
+	} else {
+		commit = conn_state->commit;
+	}
+	if (commit) {
+		ret = wait_for_completion_interruptible(&commit->hw_done);
+		if (ret)
+			return ret;
+	}
+
+	ret = mutex_lock_interruptible(&dev_priv->psr.lock);
+	if (ret)
+		return ret;
+
+	enable = psr_global_enabled(val);
+
+	if (!enable || switching_psr(dev_priv, crtc_state, mode))
+		intel_psr_disable_locked(dev_priv->psr.dp);
+
+	dev_priv->psr.debug = val;
+	if (crtc)
+		dev_priv->psr.psr2_enabled = intel_psr2_enabled(dev_priv, crtc_state);
+
+	intel_psr_irq_control(dev_priv, dev_priv->psr.debug);
+
+	if (dev_priv->psr.prepared && enable)
+		intel_psr_enable_locked(dev_priv, crtc_state);
+
+	mutex_unlock(&dev_priv->psr.lock);
+	return ret;
 }
 
 static void intel_psr_work(struct work_struct *work)
···
 	if (dev_priv->psr.busy_frontbuffer_bits || dev_priv->psr.active)
 		goto unlock;
 
-	intel_psr_activate(dev_priv->psr.enabled);
+	intel_psr_activate(dev_priv->psr.dp);
 unlock:
 	mutex_unlock(&dev_priv->psr.lock);
 }
···
 		return;
 	}
 
-	crtc = dp_to_dig_port(dev_priv->psr.enabled)->base.base.crtc;
+	crtc = dp_to_dig_port(dev_priv->psr.dp)->base.base.crtc;
 	pipe = to_intel_crtc(crtc)->pipe;
 
 	frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe);
···
 		return;
 	}
 
-	crtc = dp_to_dig_port(dev_priv->psr.enabled)->base.base.crtc;
+	crtc = dp_to_dig_port(dev_priv->psr.dp)->base.base.crtc;
 	pipe = to_intel_crtc(crtc)->pipe;
 
 	frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe);
···
 
 void intel_psr_short_pulse(struct intel_dp *intel_dp)
 {
-	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
-	struct drm_device *dev = intel_dig_port->base.base.dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	struct i915_psr *psr = &dev_priv->psr;
 	u8 val;
 	const u8 errors = DP_PSR_RFB_STORAGE_ERROR |
···
 
 	mutex_lock(&psr->lock);
 
-	if (psr->enabled != intel_dp)
+	if (!psr->enabled || psr->dp != intel_dp)
 		goto exit;
 
 	if (drm_dp_dpcd_readb(&intel_dp->aux, DP_PSR_STATUS, &val) != 1) {

drivers/gpu/drm/i915/intel_ringbuffer.c

···
 static void ring_setup_phys_status_page(struct intel_engine_cs *engine)
 {
 	struct drm_i915_private *dev_priv = engine->i915;
+	struct page *page = virt_to_page(engine->status_page.page_addr);
+	phys_addr_t phys = PFN_PHYS(page_to_pfn(page));
 	u32 addr;
 
-	addr = dev_priv->status_page_dmah->busaddr;
+	addr = lower_32_bits(phys);
 	if (INTEL_GEN(dev_priv) >= 4)
-		addr |= (dev_priv->status_page_dmah->busaddr >> 28) & 0xf0;
+		addr |= (phys >> 28) & 0xf0;
+
 	I915_WRITE(HWS_PGA, addr);
 }
 
···
 	if (INTEL_GEN(dev_priv) > 2)
 		I915_WRITE_MODE(engine, _MASKED_BIT_DISABLE(STOP_RING));
 
+	/* Papering over lost _interrupts_ immediately following the restart */
+	intel_engine_wakeup(engine);
 out:
 	intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
 
···
 	return 0;
 }
 
-
-
-int intel_ring_pin(struct intel_ring *ring,
-		   struct drm_i915_private *i915,
-		   unsigned int offset_bias)
+int intel_ring_pin(struct intel_ring *ring)
 {
-	enum i915_map_type map = HAS_LLC(i915) ? I915_MAP_WB : I915_MAP_WC;
 	struct i915_vma *vma = ring->vma;
+	enum i915_map_type map =
+		HAS_LLC(vma->vm->i915) ? I915_MAP_WB : I915_MAP_WC;
 	unsigned int flags;
 	void *addr;
 	int ret;
 
 	GEM_BUG_ON(ring->vaddr);
 
-
 	flags = PIN_GLOBAL;
-	if (offset_bias)
-		flags |= PIN_OFFSET_BIAS | offset_bias;
+
+	/* Ring wraparound at offset 0 sometimes hangs. No idea why. */
+	flags |= PIN_OFFSET_BIAS | i915_ggtt_pin_bias(vma);
+
 	if (vma->obj->stolen)
 		flags |= PIN_MAPPABLE;
 	else
···
 			return ret;
 	}
 
-	ret = i915_vma_pin(vma, 0, PAGE_SIZE, flags);
+	ret = i915_vma_pin(vma, 0, 0, flags);
 	if (unlikely(ret))
 		return ret;
 
···
 			return err;
 	}
 
-	err = i915_vma_pin(vma, 0, I915_GTT_MIN_ALIGNMENT,
-			   PIN_GLOBAL | PIN_HIGH);
+	err = i915_vma_pin(vma, 0, 0, PIN_GLOBAL | PIN_HIGH);
 	if (err)
 		return err;
 
···
 		goto err;
 	}
 
-	/* Ring wraparound at offset 0 sometimes hangs. No idea why. */
-	err = intel_ring_pin(ring, engine->i915, I915_GTT_PAGE_SIZE);
+	err = intel_ring_pin(ring);
 	if (err)
 		goto err_ring;
 
···
 	}
 
 	if (ppgtt) {
+		ret = engine->emit_flush(rq, EMIT_INVALIDATE);
+		if (ret)
+			goto err_mm;
+
 		ret = flush_pd_dir(rq);
+		if (ret)
+			goto err_mm;
+
+		/*
+		 * Not only do we need a full barrier (post-sync write) after
+		 * invalidating the TLBs, but we need to wait a little bit
+		 * longer. Whether this is merely delaying us, or the
+		 * subsequent flush is a key part of serialising with the
+		 * post-sync op, this extra pass appears vital before a
+		 * mm switch!
+		 */
+		ret = engine->emit_flush(rq, EMIT_INVALIDATE);
+		if (ret)
+			goto err_mm;
+
+		ret = engine->emit_flush(rq, EMIT_FLUSH);
 		if (ret)
 			goto err_mm;
 	}
···
 	intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
 }
 
-static int gen6_bsd_ring_flush(struct i915_request *rq, u32 mode)
+static int mi_flush_dw(struct i915_request *rq, u32 flags)
 {
 	u32 cmd, *cs;
 
···
 
 	cmd = MI_FLUSH_DW;
 
-	/* We always require a command barrier so that subsequent
+	/*
+	 * We always require a command barrier so that subsequent
 	 * commands, such as breadcrumb interrupts, are strictly ordered
 	 * wrt the contents of the write cache being flushed to memory
 	 * (and thus being coherent from the CPU).
···
 	cmd |= MI_FLUSH_DW_STORE_INDEX | MI_FLUSH_DW_OP_STOREDW;
 
 	/*
-	 * Bspec vol 1c.5 - video engine command streamer:
+	 * Bspec vol 1c.3 - blitter engine command streamer:
 	 * "If ENABLED, all TLBs will be invalidated once the flush
 	 * operation is complete. This bit is only valid when the
 	 * Post-Sync Operation field is a value of 1h or 3h."
 	 */
-	if (mode & EMIT_INVALIDATE)
-		cmd |= MI_INVALIDATE_TLB | MI_INVALIDATE_BSD;
+	cmd |= flags;
 
 	*cs++ = cmd;
 	*cs++ = I915_GEM_HWS_SCRATCH_ADDR | MI_FLUSH_DW_USE_GTT;
 	*cs++ = 0;
 	*cs++ = MI_NOOP;
+
 	intel_ring_advance(rq, cs);
+
 	return 0;
+}
+
+static int gen6_flush_dw(struct i915_request *rq, u32 mode, u32 invflags)
+{
+	return mi_flush_dw(rq, mode & EMIT_INVALIDATE ? invflags : 0);
+}
+
+static int gen6_bsd_ring_flush(struct i915_request *rq, u32 mode)
+{
+	return gen6_flush_dw(rq, mode, MI_INVALIDATE_TLB | MI_INVALIDATE_BSD);
 }
 
 static int
···
 		return PTR_ERR(cs);
 
 	*cs++ = MI_BATCH_BUFFER_START | (dispatch_flags & I915_DISPATCH_SECURE ?
-		0 : MI_BATCH_PPGTT_HSW | MI_BATCH_NON_SECURE_HSW) |
-		(dispatch_flags & I915_DISPATCH_RS ?
-		MI_BATCH_RESOURCE_STREAMER : 0);
+		0 : MI_BATCH_PPGTT_HSW | MI_BATCH_NON_SECURE_HSW);
 	/* bit0-7 is the length on GEN6+ */
 	*cs++ = offset;
 	intel_ring_advance(rq, cs);
···
 
 static int gen6_ring_flush(struct i915_request *rq, u32 mode)
 {
-	u32 cmd, *cs;
-
-	cs = intel_ring_begin(rq, 4);
-	if (IS_ERR(cs))
-		return PTR_ERR(cs);
-
-	cmd = MI_FLUSH_DW;
-
-	/* We always require a command barrier so that subsequent
-	 * commands, such as breadcrumb interrupts, are strictly ordered
-	 * wrt the contents of the write cache being flushed to memory
-	 * (and thus being coherent from the CPU).
-	 */
-	cmd |= MI_FLUSH_DW_STORE_INDEX | MI_FLUSH_DW_OP_STOREDW;
-
-	/*
-	 * Bspec vol 1c.3 - blitter engine command streamer:
-	 * "If ENABLED, all TLBs will be invalidated once the flush
-	 * operation is complete. This bit is only valid when the
-	 * Post-Sync Operation field is a value of 1h or 3h."
-	 */
-	if (mode & EMIT_INVALIDATE)
-		cmd |= MI_INVALIDATE_TLB;
-	*cs++ = cmd;
-	*cs++ = I915_GEM_HWS_SCRATCH_ADDR | MI_FLUSH_DW_USE_GTT;
-	*cs++ = 0;
-	*cs++ = MI_NOOP;
-	intel_ring_advance(rq, cs);
-
-	return 0;
+	return gen6_flush_dw(rq, mode, MI_INVALIDATE_TLB);
 }
 
 static void intel_ring_init_semaphores(struct drm_i915_private *dev_priv,

drivers/gpu/drm/i915/intel_ringbuffer.h

···
 					 unsigned int dispatch_flags);
 #define I915_DISPATCH_SECURE BIT(0)
 #define I915_DISPATCH_PINNED BIT(1)
-#define I915_DISPATCH_RS     BIT(2)
 	void		(*emit_breadcrumb)(struct i915_request *rq, u32 *cs);
 	int		emit_breadcrumb_sz;
 
···
 intel_engine_create_ring(struct intel_engine_cs *engine,
 			 struct i915_timeline *timeline,
 			 int size);
-int intel_ring_pin(struct intel_ring *ring,
-		   struct drm_i915_private *i915,
-		   unsigned int offset_bias);
+int intel_ring_pin(struct intel_ring *ring);
 void intel_ring_reset(struct intel_ring *ring, u32 tail);
 unsigned int intel_ring_update_space(struct intel_ring *ring);
 void intel_ring_unpin(struct intel_ring *ring);
···
 int intel_init_vebox_ring_buffer(struct intel_engine_cs *engine);
 
 int intel_engine_stop_cs(struct intel_engine_cs *engine);
+void intel_engine_cancel_stop_cs(struct intel_engine_cs *engine);
 
 u64 intel_engine_get_active_head(const struct intel_engine_cs *engine);
 u64 intel_engine_get_last_batch_head(const struct intel_engine_cs *engine);
 
-static inline u32 intel_engine_get_seqno(struct intel_engine_cs *engine)
-{
-	return intel_read_status_page(engine, I915_GEM_HWS_INDEX);
-}
-
 static inline u32 intel_engine_last_submit(struct intel_engine_cs *engine)
 {
-	/* We are only peeking at the tail of the submit queue (and not the
+	/*
+	 * We are only peeking at the tail of the submit queue (and not the
 	 * queue itself) in order to gain a hint as to the current active
 	 * state of the engine. Callers are not expected to be taking
 	 * engine->timeline->lock, nor are they expected to be concerned
···
 	 * a hint and nothing more.
 	 */
 	return READ_ONCE(engine->timeline.seqno);
+}
+
+static inline u32 intel_engine_get_seqno(struct intel_engine_cs *engine)
+{
+	return intel_read_status_page(engine, I915_GEM_HWS_INDEX);
+}
+
+static inline bool intel_engine_signaled(struct intel_engine_cs *engine,
+					 u32 seqno)
+{
+	return i915_seqno_passed(intel_engine_get_seqno(engine), seqno);
+}
+
+static inline bool intel_engine_has_completed(struct intel_engine_cs *engine,
+					      u32 seqno)
+{
+	GEM_BUG_ON(!seqno);
+	return intel_engine_signaled(engine, seqno);
+}
+
+static inline bool intel_engine_has_started(struct intel_engine_cs *engine,
+					    u32 seqno)
+{
+	GEM_BUG_ON(!seqno);
+	return intel_engine_signaled(engine, seqno - 1);
 }
 
 void intel_engine_get_instdone(struct intel_engine_cs *engine,

drivers/gpu/drm/i915/intel_runtime_pm.c

···
 bool intel_display_power_well_is_enabled(struct drm_i915_private *dev_priv,
 					 enum i915_power_well_id power_well_id);
 
-static struct i915_power_well *
-lookup_power_well(struct drm_i915_private *dev_priv,
-		  enum i915_power_well_id power_well_id);
-
 const char *
 intel_display_power_domain_str(enum intel_display_power_domain domain)
 {
···
 static void intel_power_well_enable(struct drm_i915_private *dev_priv,
 				    struct i915_power_well *power_well)
 {
-	DRM_DEBUG_KMS("enabling %s\n", power_well->name);
-	power_well->ops->enable(dev_priv, power_well);
+	DRM_DEBUG_KMS("enabling %s\n", power_well->desc->name);
+	power_well->desc->ops->enable(dev_priv, power_well);
 	power_well->hw_enabled = true;
 }
 
 static void intel_power_well_disable(struct drm_i915_private *dev_priv,
 				     struct i915_power_well *power_well)
 {
-	DRM_DEBUG_KMS("disabling %s\n", power_well->name);
+	DRM_DEBUG_KMS("disabling %s\n", power_well->desc->name);
 	power_well->hw_enabled = false;
-	power_well->ops->disable(dev_priv, power_well);
+	power_well->desc->ops->disable(dev_priv, power_well);
 }
 
 static void intel_power_well_get(struct drm_i915_private *dev_priv,
···
 				 struct i915_power_well *power_well)
 {
 	WARN(!power_well->count, "Use count on power well %s is already zero",
-	     power_well->name);
+	     power_well->desc->name);
 
 	if (!--power_well->count)
 		intel_power_well_disable(dev_priv, power_well);
···
 	is_enabled = true;
 
 	for_each_power_domain_well_rev(dev_priv, power_well, BIT_ULL(domain)) {
-		if (power_well->always_on)
+		if (power_well->desc->always_on)
 			continue;
 
 		if (!power_well->hw_enabled) {
···
 	mutex_unlock(&power_domains->lock);
 
 	return ret;
-}
-
-/**
- * intel_display_set_init_power - set the initial power domain state
- * @dev_priv: i915 device instance
- * @enable: whether to enable or disable the initial power domain state
- *
- * For simplicity our driver load/unload and system suspend/resume code assumes
- * that all power domains are always enabled. This functions controls the state
- * of this little hack. While the initial power domain state is enabled runtime
- * pm is effectively disabled.
- */
-void intel_display_set_init_power(struct drm_i915_private *dev_priv,
-				  bool enable)
-{
-	if (dev_priv->power_domains.init_power_on == enable)
-		return;
-
-	if (enable)
-		intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
-	else
-		intel_display_power_put(dev_priv, POWER_DOMAIN_INIT);
-
-	dev_priv->power_domains.init_power_on = enable;
 }
 
 /*
···
 static void hsw_wait_for_power_well_enable(struct drm_i915_private *dev_priv,
 					   struct i915_power_well *power_well)
 {
-	enum i915_power_well_id id = power_well->id;
+	const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
+	int pw_idx = power_well->desc->hsw.idx;
 
 	/* Timeout for PW1:10 us, AUX:not specified, other PWs:20 us. */
 	WARN_ON(intel_wait_for_register(dev_priv,
-					HSW_PWR_WELL_CTL_DRIVER(id),
-					HSW_PWR_WELL_CTL_STATE(id),
-					HSW_PWR_WELL_CTL_STATE(id),
+					regs->driver,
+					HSW_PWR_WELL_CTL_STATE(pw_idx),
+					HSW_PWR_WELL_CTL_STATE(pw_idx),
 					1));
 }
 
 static u32 hsw_power_well_requesters(struct drm_i915_private *dev_priv,
-				     enum i915_power_well_id id)
+				     const struct i915_power_well_regs *regs,
+				     int pw_idx)
 {
-	u32 req_mask = HSW_PWR_WELL_CTL_REQ(id);
+	u32 req_mask = HSW_PWR_WELL_CTL_REQ(pw_idx);
 	u32 ret;
 
-	ret = I915_READ(HSW_PWR_WELL_CTL_BIOS(id)) & req_mask ? 1 : 0;
-	ret |= I915_READ(HSW_PWR_WELL_CTL_DRIVER(id)) & req_mask ? 2 : 0;
-	ret |= I915_READ(HSW_PWR_WELL_CTL_KVMR) & req_mask ? 4 : 0;
-	ret |= I915_READ(HSW_PWR_WELL_CTL_DEBUG(id)) & req_mask ? 8 : 0;
+	ret = I915_READ(regs->bios) & req_mask ? 1 : 0;
+	ret |= I915_READ(regs->driver) & req_mask ? 2 : 0;
+	if (regs->kvmr.reg)
+		ret |= I915_READ(regs->kvmr) & req_mask ? 4 : 0;
+	ret |= I915_READ(regs->debug) & req_mask ? 8 : 0;
 
 	return ret;
 }
···
 static void hsw_wait_for_power_well_disable(struct drm_i915_private *dev_priv,
 					    struct i915_power_well *power_well)
 {
-	enum i915_power_well_id id = power_well->id;
+	const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
+	int pw_idx = power_well->desc->hsw.idx;
 	bool disabled;
 	u32 reqs;
 
···
 	 * Skip the wait in case any of the request bits are set and print a
 	 * diagnostic message.
 	 */
-	wait_for((disabled = !(I915_READ(HSW_PWR_WELL_CTL_DRIVER(id)) &
-			       HSW_PWR_WELL_CTL_STATE(id))) ||
-		 (reqs = hsw_power_well_requesters(dev_priv, id)), 1);
+	wait_for((disabled = !(I915_READ(regs->driver) &
+			       HSW_PWR_WELL_CTL_STATE(pw_idx))) ||
+		 (reqs = hsw_power_well_requesters(dev_priv, regs, pw_idx)), 1);
 	if (disabled)
 		return;
 
 	DRM_DEBUG_KMS("%s forced on (bios:%d driver:%d kvmr:%d debug:%d)\n",
-		      power_well->name,
+		      power_well->desc->name,
 		      !!(reqs & 1), !!(reqs & 2), !!(reqs & 4), !!(reqs & 8));
 }
 
···
 static void hsw_power_well_enable(struct drm_i915_private *dev_priv,
 				  struct i915_power_well *power_well)
 {
-	enum i915_power_well_id id = power_well->id;
-	bool wait_fuses = power_well->hsw.has_fuses;
+	const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
+	int pw_idx = power_well->desc->hsw.idx;
+	bool wait_fuses = power_well->desc->hsw.has_fuses;
 	enum skl_power_gate uninitialized_var(pg);
 	u32 val;
 
 	if (wait_fuses) {
-		pg = INTEL_GEN(dev_priv) >= 11 ? ICL_PW_TO_PG(id) :
-						 SKL_PW_TO_PG(id);
+		pg = INTEL_GEN(dev_priv) >= 11 ? ICL_PW_CTL_IDX_TO_PG(pw_idx) :
+						 SKL_PW_CTL_IDX_TO_PG(pw_idx);
 		/*
 		 * For PW1 we have to wait both for the PW0/PG0 fuse state
 		 * before enabling the power well and PW1/PG1's own fuse
···
 			gen9_wait_for_power_well_fuses(dev_priv, SKL_PG0);
 	}
 
-	val = I915_READ(HSW_PWR_WELL_CTL_DRIVER(id));
-	I915_WRITE(HSW_PWR_WELL_CTL_DRIVER(id), val | HSW_PWR_WELL_CTL_REQ(id));
+	val = I915_READ(regs->driver);
+	I915_WRITE(regs->driver, val | HSW_PWR_WELL_CTL_REQ(pw_idx));
 	hsw_wait_for_power_well_enable(dev_priv, power_well);
 
 	/* Display WA #1178: cnl */
 	if (IS_CANNONLAKE(dev_priv) &&
-	    (id == CNL_DISP_PW_AUX_B || id == CNL_DISP_PW_AUX_C ||
-	     id == CNL_DISP_PW_AUX_D || id == CNL_DISP_PW_AUX_F)) {
-		val = I915_READ(CNL_AUX_ANAOVRD1(id));
+	    pw_idx >= GLK_PW_CTL_IDX_AUX_B &&
+	    pw_idx <= CNL_PW_CTL_IDX_AUX_F) {
+		val = I915_READ(CNL_AUX_ANAOVRD1(pw_idx));
 		val |= CNL_AUX_ANAOVRD1_ENABLE | CNL_AUX_ANAOVRD1_LDO_BYPASS;
-		I915_WRITE(CNL_AUX_ANAOVRD1(id), val);
+		I915_WRITE(CNL_AUX_ANAOVRD1(pw_idx), val);
 	}
 
 	if (wait_fuses)
 		gen9_wait_for_power_well_fuses(dev_priv, pg);
 
-	hsw_power_well_post_enable(dev_priv, power_well->hsw.irq_pipe_mask,
-				   power_well->hsw.has_vga);
+	hsw_power_well_post_enable(dev_priv,
+				   power_well->desc->hsw.irq_pipe_mask,
+				   power_well->desc->hsw.has_vga);
 }
 
 static void hsw_power_well_disable(struct drm_i915_private *dev_priv,
 				   struct i915_power_well *power_well)
 {
-	enum i915_power_well_id id = power_well->id;
+	const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
+	int pw_idx = power_well->desc->hsw.idx;
 	u32 val;
 
-	hsw_power_well_pre_disable(dev_priv, power_well->hsw.irq_pipe_mask);
+	hsw_power_well_pre_disable(dev_priv,
+				   power_well->desc->hsw.irq_pipe_mask);
 
-	val = I915_READ(HSW_PWR_WELL_CTL_DRIVER(id));
-	I915_WRITE(HSW_PWR_WELL_CTL_DRIVER(id),
-		   val & ~HSW_PWR_WELL_CTL_REQ(id));
+	val = I915_READ(regs->driver);
+	I915_WRITE(regs->driver, val & ~HSW_PWR_WELL_CTL_REQ(pw_idx));
 	hsw_wait_for_power_well_disable(dev_priv, power_well);
 }
 
-#define ICL_AUX_PW_TO_PORT(pw)	((pw) - ICL_DISP_PW_AUX_A)
+#define ICL_AUX_PW_TO_PORT(pw_idx)	((pw_idx) - ICL_PW_CTL_IDX_AUX_A)
 
 static void
 icl_combo_phy_aux_power_well_enable(struct drm_i915_private *dev_priv,
 				    struct i915_power_well *power_well)
 {
-	enum i915_power_well_id id = power_well->id;
-	enum port port = ICL_AUX_PW_TO_PORT(id);
+	const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
+	int pw_idx = power_well->desc->hsw.idx;
+	enum port port = ICL_AUX_PW_TO_PORT(pw_idx);
 	u32 val;
 
-	val = I915_READ(HSW_PWR_WELL_CTL_DRIVER(id));
-	I915_WRITE(HSW_PWR_WELL_CTL_DRIVER(id), val | HSW_PWR_WELL_CTL_REQ(id));
+	val = I915_READ(regs->driver);
+	I915_WRITE(regs->driver, val | HSW_PWR_WELL_CTL_REQ(pw_idx));
 
 	val = I915_READ(ICL_PORT_CL_DW12(port));
 	I915_WRITE(ICL_PORT_CL_DW12(port), val | ICL_LANE_ENABLE_AUX);
···
 icl_combo_phy_aux_power_well_disable(struct drm_i915_private *dev_priv,
 				     struct i915_power_well *power_well)
 {
-	enum i915_power_well_id id = power_well->id;
-	enum port port = ICL_AUX_PW_TO_PORT(id);
+	const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
+	int pw_idx = power_well->desc->hsw.idx;
+	enum port port = ICL_AUX_PW_TO_PORT(pw_idx);
 	u32 val;
 
 	val = I915_READ(ICL_PORT_CL_DW12(port));
 	I915_WRITE(ICL_PORT_CL_DW12(port), val & ~ICL_LANE_ENABLE_AUX);
 
-	val = I915_READ(HSW_PWR_WELL_CTL_DRIVER(id));
-	I915_WRITE(HSW_PWR_WELL_CTL_DRIVER(id),
-		   val & ~HSW_PWR_WELL_CTL_REQ(id));
+	val = I915_READ(regs->driver);
+	I915_WRITE(regs->driver, val & ~HSW_PWR_WELL_CTL_REQ(pw_idx));
 
 	hsw_wait_for_power_well_disable(dev_priv, power_well);
 }
···
 static bool hsw_power_well_enabled(struct drm_i915_private *dev_priv,
 				   struct i915_power_well *power_well)
 {
-	enum i915_power_well_id id = power_well->id;
-	u32 mask = HSW_PWR_WELL_CTL_REQ(id) | HSW_PWR_WELL_CTL_STATE(id);
+	const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
+	int pw_idx = power_well->desc->hsw.idx;
+	u32 mask = HSW_PWR_WELL_CTL_REQ(pw_idx) |
+		   HSW_PWR_WELL_CTL_STATE(pw_idx);
 
-	return (I915_READ(HSW_PWR_WELL_CTL_DRIVER(id)) & mask) == mask;
+	return (I915_READ(regs->driver) & mask) == mask;
 }
 
 static void assert_can_enable_dc9(struct drm_i915_private *dev_priv)
 {
-	enum i915_power_well_id id = SKL_DISP_PW_2;
-
 	WARN_ONCE((I915_READ(DC_STATE_EN) & DC_STATE_EN_DC9),
 		  "DC9 already programmed to be enabled.\n");
 	WARN_ONCE(I915_READ(DC_STATE_EN) & DC_STATE_EN_UPTO_DC5,
 		  "DC5 still not disabled to enable DC9.\n");
-	WARN_ONCE(I915_READ(HSW_PWR_WELL_CTL_DRIVER(id)) &
-		  HSW_PWR_WELL_CTL_REQ(id),
+	WARN_ONCE(I915_READ(HSW_PWR_WELL_CTL2) &
+		  HSW_PWR_WELL_CTL_REQ(SKL_PW_CTL_IDX_PW_2),
 		  "Power well 2 on.\n");
 	WARN_ONCE(intel_irqs_enabled(dev_priv),
 		  "Interrupts not disabled yet.\n");
···
 	WARN_ONCE(!I915_READ(CSR_HTP_SKL), "CSR HTP Not fine\n");
 }
 
+static struct i915_power_well *
+lookup_power_well(struct drm_i915_private *dev_priv,
+		  enum i915_power_well_id power_well_id)
+{
+	struct i915_power_well *power_well;
+
+	for_each_power_well(dev_priv, power_well)
+		if (power_well->desc->id == power_well_id)
+			return power_well;
+
+	/*
+	 * It's not feasible to add error checking code to the callers since
+	 * this condition really shouldn't happen and it doesn't even make sense
+	 * to abort things like display initialization sequences. Just return
+	 * the first power well and hope the WARN gets reported so we can fix
+	 * our driver.
+	 */
+	WARN(1, "Power well %d not defined for this platform\n", power_well_id);
+	return &dev_priv->power_domains.power_wells[0];
+}
+
 static void assert_can_enable_dc5(struct drm_i915_private *dev_priv)
 {
 	bool pg2_enabled = intel_display_power_well_is_enabled(dev_priv,
···
 static void hsw_power_well_sync_hw(struct drm_i915_private *dev_priv,
 				   struct i915_power_well *power_well)
 {
-	enum i915_power_well_id id = power_well->id;
-	u32 mask = HSW_PWR_WELL_CTL_REQ(id);
-	u32 bios_req = I915_READ(HSW_PWR_WELL_CTL_BIOS(id));
+	const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
+	int pw_idx = power_well->desc->hsw.idx;
+	u32 mask = HSW_PWR_WELL_CTL_REQ(pw_idx);
+	u32 bios_req = I915_READ(regs->bios);
 
 	/* Take over the request bit if set by BIOS. */
 	if (bios_req & mask) {
-		u32 drv_req = I915_READ(HSW_PWR_WELL_CTL_DRIVER(id));
+		u32 drv_req = I915_READ(regs->driver);
 
 		if (!(drv_req & mask))
-			I915_WRITE(HSW_PWR_WELL_CTL_DRIVER(id), drv_req | mask);
-		I915_WRITE(HSW_PWR_WELL_CTL_BIOS(id), bios_req & ~mask);
+			I915_WRITE(regs->driver, drv_req | mask);
+		I915_WRITE(regs->bios, bios_req & ~mask);
 	}
 }
 
 static void bxt_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv,
 					   struct i915_power_well *power_well)
 {
-	bxt_ddi_phy_init(dev_priv, power_well->bxt.phy);
+	bxt_ddi_phy_init(dev_priv, power_well->desc->bxt.phy);
 }
 
 static void bxt_dpio_cmn_power_well_disable(struct drm_i915_private *dev_priv,
 					    struct i915_power_well *power_well)
 {
-	bxt_ddi_phy_uninit(dev_priv, power_well->bxt.phy);
+	bxt_ddi_phy_uninit(dev_priv, power_well->desc->bxt.phy);
 }
 
 static bool bxt_dpio_cmn_power_well_enabled(struct drm_i915_private *dev_priv,
 					    struct i915_power_well *power_well)
 {
-	return bxt_ddi_phy_is_enabled(dev_priv, power_well->bxt.phy);
+	return bxt_ddi_phy_is_enabled(dev_priv, power_well->desc->bxt.phy);
 }
 
 static void bxt_verify_ddi_phy_power_wells(struct drm_i915_private *dev_priv)
 {
 	struct i915_power_well *power_well;
 
-	power_well = lookup_power_well(dev_priv, BXT_DPIO_CMN_A);
+	power_well = lookup_power_well(dev_priv, BXT_DISP_PW_DPIO_CMN_A);
 	if (power_well->count > 0)
-		bxt_ddi_phy_verify_state(dev_priv, power_well->bxt.phy);
+		bxt_ddi_phy_verify_state(dev_priv, power_well->desc->bxt.phy);
 
-	power_well = lookup_power_well(dev_priv, BXT_DPIO_CMN_BC);
+	power_well = lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC);
 	if (power_well->count > 0)
-		bxt_ddi_phy_verify_state(dev_priv, power_well->bxt.phy);
+		bxt_ddi_phy_verify_state(dev_priv, power_well->desc->bxt.phy);
 
 	if (IS_GEMINILAKE(dev_priv)) {
-		power_well = lookup_power_well(dev_priv, GLK_DPIO_CMN_C);
+		power_well = lookup_power_well(dev_priv,
+					       GLK_DISP_PW_DPIO_CMN_C);
 		if (power_well->count > 0)
-			bxt_ddi_phy_verify_state(dev_priv, power_well->bxt.phy);
+			bxt_ddi_phy_verify_state(dev_priv,
+						 power_well->desc->bxt.phy);
 	}
 }
 
···
 static void vlv_set_power_well(struct drm_i915_private *dev_priv,
 			       struct i915_power_well *power_well, bool enable)
 {
-	enum i915_power_well_id power_well_id = power_well->id;
+	int pw_idx = power_well->desc->vlv.idx;
 	u32 mask;
 	u32 state;
 	u32 ctrl;
 
-	mask = PUNIT_PWRGT_MASK(power_well_id);
-	state = enable ? PUNIT_PWRGT_PWR_ON(power_well_id) :
-			 PUNIT_PWRGT_PWR_GATE(power_well_id);
+	mask = PUNIT_PWRGT_MASK(pw_idx);
+	state = enable ? PUNIT_PWRGT_PWR_ON(pw_idx) :
+			 PUNIT_PWRGT_PWR_GATE(pw_idx);
 
 	mutex_lock(&dev_priv->pcu_lock);
 
···
 static bool vlv_power_well_enabled(struct drm_i915_private *dev_priv,
 				   struct i915_power_well *power_well)
 {
-	enum i915_power_well_id power_well_id = power_well->id;
+	int pw_idx = power_well->desc->vlv.idx;
 	bool enabled = false;
 	u32 mask;
 	u32 state;
 	u32 ctrl;
 
-	mask = PUNIT_PWRGT_MASK(power_well_id);
-	ctrl = PUNIT_PWRGT_PWR_ON(power_well_id);
+	mask = PUNIT_PWRGT_MASK(pw_idx);
+	ctrl = PUNIT_PWRGT_PWR_ON(pw_idx);
 
 	mutex_lock(&dev_priv->pcu_lock);
 
···
 	 * We only ever set the power-on and power-gate states, anything
 	 * else is unexpected.
 	 */
-	WARN_ON(state != PUNIT_PWRGT_PWR_ON(power_well_id) &&
-		state != PUNIT_PWRGT_PWR_GATE(power_well_id));
+	WARN_ON(state != PUNIT_PWRGT_PWR_ON(pw_idx) &&
+		state != PUNIT_PWRGT_PWR_GATE(pw_idx));
 	if (state == ctrl)
 		enabled = true;
 
···
 static void vlv_display_power_well_enable(struct drm_i915_private *dev_priv,
 					  struct i915_power_well *power_well)
 {
-	WARN_ON_ONCE(power_well->id != PUNIT_POWER_WELL_DISP2D);
-
 	vlv_set_power_well(dev_priv, power_well, true);
 
 	vlv_display_power_well_init(dev_priv);
···
 static void vlv_display_power_well_disable(struct drm_i915_private *dev_priv,
 					   struct i915_power_well *power_well)
 {
-	WARN_ON_ONCE(power_well->id != PUNIT_POWER_WELL_DISP2D);
-
 	vlv_display_power_well_deinit(dev_priv);
 
 	vlv_set_power_well(dev_priv, power_well, false);
···
 static void vlv_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv,
 					   struct i915_power_well *power_well)
 {
-	WARN_ON_ONCE(power_well->id != PUNIT_POWER_WELL_DPIO_CMN_BC);
-
 	/* since ref/cri clock was enabled */
 	udelay(1); /* >10ns for cmnreset, >0ns for sidereset */
 
···
 {
 	enum pipe pipe;
 
-	WARN_ON_ONCE(power_well->id != PUNIT_POWER_WELL_DPIO_CMN_BC);
-
 	for_each_pipe(dev_priv, pipe)
 		assert_pll_disabled(dev_priv, pipe);
 
···
 
 #define POWER_DOMAIN_MASK (GENMASK_ULL(POWER_DOMAIN_NUM - 1, 0))
 
-static struct i915_power_well *
-lookup_power_well(struct drm_i915_private *dev_priv,
-		  enum i915_power_well_id power_well_id)
-{
-	struct i915_power_domains *power_domains = &dev_priv->power_domains;
-	int i;
-
-	for (i = 0; i < power_domains->power_well_count; i++) {
-		struct i915_power_well *power_well;
-
-		power_well = &power_domains->power_wells[i];
-		if (power_well->id == power_well_id)
-			return power_well;
-	}
-
-	return NULL;
-}
-
 #define BITS_SET(val, bits) (((val) & (bits)) == (bits))
 
 static void assert_chv_phy_status(struct drm_i915_private *dev_priv)
 {
 	struct i915_power_well *cmn_bc =
-		lookup_power_well(dev_priv, PUNIT_POWER_WELL_DPIO_CMN_BC);
+		lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC);
 	struct i915_power_well *cmn_d =
-		lookup_power_well(dev_priv, PUNIT_POWER_WELL_DPIO_CMN_D);
+		lookup_power_well(dev_priv, CHV_DISP_PW_DPIO_CMN_D);
 	u32 phy_control = dev_priv->chv_phy_control;
 	u32 phy_status = 0;
 	u32 phy_status_mask = 0xffffffff;
···
 				     PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 0) |
 				     PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 1));
 
-	if (cmn_bc->ops->is_enabled(dev_priv, cmn_bc)) {
+	if (cmn_bc->desc->ops->is_enabled(dev_priv, cmn_bc)) {
 		phy_status |= PHY_POWERGOOD(DPIO_PHY0);
 
 		/* this assumes override is only used to enable lanes */
···
 			phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 1);
 	}
 
-	if (cmn_d->ops->is_enabled(dev_priv, cmn_d)) {
+	if (cmn_d->desc->ops->is_enabled(dev_priv, cmn_d)) {
 		phy_status |= PHY_POWERGOOD(DPIO_PHY1);
 
 		/* this assumes override is only used to enable lanes */
···
 	enum pipe pipe;
 	uint32_t tmp;
 
-	WARN_ON_ONCE(power_well->id != PUNIT_POWER_WELL_DPIO_CMN_BC &&
-		     power_well->id != PUNIT_POWER_WELL_DPIO_CMN_D);
+	WARN_ON_ONCE(power_well->desc->id != VLV_DISP_PW_DPIO_CMN_BC &&
+		     power_well->desc->id != CHV_DISP_PW_DPIO_CMN_D);
 
-	if (power_well->id == PUNIT_POWER_WELL_DPIO_CMN_BC) {
+	if (power_well->desc->id == VLV_DISP_PW_DPIO_CMN_BC) {
 		pipe = PIPE_A;
 		phy = DPIO_PHY0;
 	} else {
···
 		DPIO_SUS_CLK_CONFIG_GATE_CLKREQ;
 	vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW28, tmp);
 
-	if (power_well->id == PUNIT_POWER_WELL_DPIO_CMN_BC) {
+	if (power_well->desc->id == VLV_DISP_PW_DPIO_CMN_BC) {
 		tmp = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW6_CH1);
 		tmp |= DPIO_DYNPWRDOWNEN_CH1;
 		vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW6_CH1, tmp);
···
 {
 	enum dpio_phy phy;
 
-	WARN_ON_ONCE(power_well->id != PUNIT_POWER_WELL_DPIO_CMN_BC &&
-		     power_well->id != PUNIT_POWER_WELL_DPIO_CMN_D);
+	WARN_ON_ONCE(power_well->desc->id != VLV_DISP_PW_DPIO_CMN_BC &&
+		     power_well->desc->id != CHV_DISP_PW_DPIO_CMN_D);
 
-	if (power_well->id == PUNIT_POWER_WELL_DPIO_CMN_BC) {
+	if (power_well->desc->id == VLV_DISP_PW_DPIO_CMN_BC) {
 		phy = DPIO_PHY0;
 		assert_pll_disabled(dev_priv, PIPE_A);
 		assert_pll_disabled(dev_priv, PIPE_B);
···
 static void chv_pipe_power_well_enable(struct drm_i915_private *dev_priv,
 				       struct i915_power_well *power_well)
 {
-	WARN_ON_ONCE(power_well->id != CHV_DISP_PW_PIPE_A);
-
 	chv_set_pipe_power_well(dev_priv, power_well, true);
 
 	vlv_display_power_well_init(dev_priv);
···
 static void chv_pipe_power_well_disable(struct drm_i915_private *dev_priv,
 					struct i915_power_well *power_well)
 {
-	WARN_ON_ONCE(power_well->id != CHV_DISP_PW_PIPE_A);
-
 	vlv_display_power_well_deinit(dev_priv);
 
 	chv_set_pipe_power_well(dev_priv, power_well, false);
···
 	.is_enabled = vlv_power_well_enabled,
 };
 
-static struct i915_power_well i9xx_always_on_power_well[] = {
+static const struct i915_power_well_desc i9xx_always_on_power_well[] = {
 	{
 		.name = "always-on",
 		.always_on = 1,
 		.domains = POWER_DOMAIN_MASK,
 		.ops = &i9xx_always_on_power_well_ops,
-		.id = I915_DISP_PW_ALWAYS_ON,
+		.id = DISP_PW_ID_NONE,
 	},
 };
 
···
 	.is_enabled = i830_pipes_power_well_enabled,
 };
 
-static struct i915_power_well i830_power_wells[] = {
+static const struct i915_power_well_desc i830_power_wells[] = {
 	{
 		.name = "always-on",
 		.always_on = 1,
 		.domains = POWER_DOMAIN_MASK,
 		.ops = &i9xx_always_on_power_well_ops,
-		.id = I915_DISP_PW_ALWAYS_ON,
+		.id = DISP_PW_ID_NONE,
 	},
 	{
 		.name = "pipes",
 		.domains = I830_PIPES_POWER_DOMAINS,
 		.ops = &i830_pipes_power_well_ops,
-		.id = I830_DISP_PW_PIPES,
+		.id = DISP_PW_ID_NONE,
 	},
 };
 
···
 	.is_enabled = bxt_dpio_cmn_power_well_enabled,
 };
 
-static struct i915_power_well hsw_power_wells[] = {
+static const struct i915_power_well_regs hsw_power_well_regs = {
+	.bios	= HSW_PWR_WELL_CTL1,
+	.driver	= HSW_PWR_WELL_CTL2,
+	.kvmr	= HSW_PWR_WELL_CTL3,
+	.debug	= HSW_PWR_WELL_CTL4,
+};
+
+static const struct i915_power_well_desc hsw_power_wells[] = {
 	{
 		.name = "always-on",
 		.always_on = 1,
 		.domains = POWER_DOMAIN_MASK,
 		.ops = &i9xx_always_on_power_well_ops,
-		.id = I915_DISP_PW_ALWAYS_ON,
+		.id = DISP_PW_ID_NONE,
 	},
 	{
 		.name = "display",
···
 		.ops = &hsw_power_well_ops,
 		.id = HSW_DISP_PW_GLOBAL,
 		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = HSW_PW_CTL_IDX_GLOBAL,
 			.hsw.has_vga = true,
 		},
 	},
 };
 
-static struct i915_power_well bdw_power_wells[] = {
+static const struct i915_power_well_desc bdw_power_wells[] = {
 	{
 		.name = "always-on",
 		.always_on = 1,
 		.domains = POWER_DOMAIN_MASK,
 		.ops = &i9xx_always_on_power_well_ops,
-		.id = I915_DISP_PW_ALWAYS_ON,
+		.id = DISP_PW_ID_NONE,
 	},
 	{
 		.name = "display",
···
 		.ops = &hsw_power_well_ops,
 		.id = HSW_DISP_PW_GLOBAL,
 		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = HSW_PW_CTL_IDX_GLOBAL,
 			.hsw.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
 			.hsw.has_vga = true,
 		},
···
 	.is_enabled = vlv_power_well_enabled,
 };
 
-static struct i915_power_well vlv_power_wells[] = {
+static const struct i915_power_well_desc vlv_power_wells[] = {
 	{
 		.name = "always-on",
 		.always_on = 1,
 		.domains = POWER_DOMAIN_MASK,
 		.ops = &i9xx_always_on_power_well_ops,
-		.id = I915_DISP_PW_ALWAYS_ON,
+		.id = DISP_PW_ID_NONE,
 	},
 	{
 		.name = "display",
 		.domains = VLV_DISPLAY_POWER_DOMAINS,
-		.id = PUNIT_POWER_WELL_DISP2D,
 		.ops = &vlv_display_power_well_ops,
+		.id = VLV_DISP_PW_DISP2D,
+		{
+			.vlv.idx = PUNIT_PWGT_IDX_DISP2D,
+		},
 	},
 	{
 		.name = "dpio-tx-b-01",
···
 			   VLV_DPIO_TX_C_LANES_01_POWER_DOMAINS |
 			   VLV_DPIO_TX_C_LANES_23_POWER_DOMAINS,
 		.ops = &vlv_dpio_power_well_ops,
-		.id = PUNIT_POWER_WELL_DPIO_TX_B_LANES_01,
+		.id = DISP_PW_ID_NONE,
+		{
+			.vlv.idx = PUNIT_PWGT_IDX_DPIO_TX_B_LANES_01,
+		},
 	},
 	{
 		.name = "dpio-tx-b-23",
···
 			   VLV_DPIO_TX_C_LANES_01_POWER_DOMAINS |
 			   VLV_DPIO_TX_C_LANES_23_POWER_DOMAINS,
 		.ops = &vlv_dpio_power_well_ops,
-		.id = PUNIT_POWER_WELL_DPIO_TX_B_LANES_23,
+		.id = DISP_PW_ID_NONE,
+		{
+			.vlv.idx = PUNIT_PWGT_IDX_DPIO_TX_B_LANES_23,
+		},
 	},
 	{
 		.name = "dpio-tx-c-01",
···
 			   VLV_DPIO_TX_C_LANES_01_POWER_DOMAINS |
 			   VLV_DPIO_TX_C_LANES_23_POWER_DOMAINS,
 		.ops = &vlv_dpio_power_well_ops,
-		.id = PUNIT_POWER_WELL_DPIO_TX_C_LANES_01,
+		.id = DISP_PW_ID_NONE,
+		{
+			.vlv.idx = PUNIT_PWGT_IDX_DPIO_TX_C_LANES_01,
+		},
 	},
 	{
 		.name = "dpio-tx-c-23",
···
 			   VLV_DPIO_TX_C_LANES_01_POWER_DOMAINS |
 			   VLV_DPIO_TX_C_LANES_23_POWER_DOMAINS,
 		.ops = &vlv_dpio_power_well_ops,
-		.id = PUNIT_POWER_WELL_DPIO_TX_C_LANES_23,
+		.id = DISP_PW_ID_NONE,
+		{
+			.vlv.idx = PUNIT_PWGT_IDX_DPIO_TX_C_LANES_23,
+		},
 	},
 	{
 		.name = "dpio-common",
 		.domains = VLV_DPIO_CMN_BC_POWER_DOMAINS,
-		.id = PUNIT_POWER_WELL_DPIO_CMN_BC,
 		.ops = &vlv_dpio_cmn_power_well_ops,
+		.id = VLV_DISP_PW_DPIO_CMN_BC,
+		{
+			.vlv.idx = PUNIT_PWGT_IDX_DPIO_CMN_BC,
+		},
 	},
 };
 
-static struct i915_power_well chv_power_wells[] = {
+static const struct i915_power_well_desc chv_power_wells[] = {
 	{
 		.name = "always-on",
 		.always_on = 1,
 		.domains = POWER_DOMAIN_MASK,
 		.ops = &i9xx_always_on_power_well_ops,
-		.id = I915_DISP_PW_ALWAYS_ON,
+		.id = DISP_PW_ID_NONE,
 	},
 	{
 		.name = "display",
···
 		 * required for any pipe to work.
 		 */
 		.domains = CHV_DISPLAY_POWER_DOMAINS,
-		.id = CHV_DISP_PW_PIPE_A,
 		.ops = &chv_pipe_power_well_ops,
+		.id = DISP_PW_ID_NONE,
 	},
 	{
 		.name = "dpio-common-bc",
 		.domains = CHV_DPIO_CMN_BC_POWER_DOMAINS,
-		.id = PUNIT_POWER_WELL_DPIO_CMN_BC,
 		.ops = &chv_dpio_cmn_power_well_ops,
+		.id = VLV_DISP_PW_DPIO_CMN_BC,
+		{
+			.vlv.idx = PUNIT_PWGT_IDX_DPIO_CMN_BC,
+		},
 	},
 	{
 		.name = "dpio-common-d",
 		.domains = CHV_DPIO_CMN_D_POWER_DOMAINS,
-		.id = PUNIT_POWER_WELL_DPIO_CMN_D,
 		.ops = &chv_dpio_cmn_power_well_ops,
+		.id = CHV_DISP_PW_DPIO_CMN_D,
+		{
+			.vlv.idx = PUNIT_PWGT_IDX_DPIO_CMN_D,
+		},
 	},
 };
 
···
 	bool ret;
 
 	power_well = lookup_power_well(dev_priv, power_well_id);
-	ret = power_well->ops->is_enabled(dev_priv, power_well);
+	ret = power_well->desc->ops->is_enabled(dev_priv, power_well);
 
 	return ret;
 }
 
-static struct i915_power_well skl_power_wells[] = {
+static const struct i915_power_well_desc skl_power_wells[] = {
 	{
 		.name = "always-on",
 		.always_on = 1,
 		.domains = POWER_DOMAIN_MASK,
 		.ops = &i9xx_always_on_power_well_ops,
-		.id = I915_DISP_PW_ALWAYS_ON,
+		.id = DISP_PW_ID_NONE,
 	},
 	{
 		.name = "power well 1",
···
 		.ops = &hsw_power_well_ops,
 		.id = SKL_DISP_PW_1,
 		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = SKL_PW_CTL_IDX_PW_1,
 			.hsw.has_fuses = true,
 		},
 	},
···
 		.domains = 0,
 		.ops = &hsw_power_well_ops,
 		.id = SKL_DISP_PW_MISC_IO,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = SKL_PW_CTL_IDX_MISC_IO,
+		},
 	},
 	{
 		.name = "DC off",
 		.domains = SKL_DISPLAY_DC_OFF_POWER_DOMAINS,
 		.ops = &gen9_dc_off_power_well_ops,
-		.id = SKL_DISP_PW_DC_OFF,
+		.id = DISP_PW_ID_NONE,
 	},
 	{
 		.name = "power well 2",
···
 		.ops = &hsw_power_well_ops,
 		.id = SKL_DISP_PW_2,
 		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = SKL_PW_CTL_IDX_PW_2,
 			.hsw.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
 			.hsw.has_vga = true,
 			.hsw.has_fuses = true,
···
 		.name = "DDI A/E IO power well",
 		.domains = SKL_DISPLAY_DDI_IO_A_E_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = SKL_DISP_PW_DDI_A_E,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = SKL_PW_CTL_IDX_DDI_A_E,
+		},
 	},
 	{
 		.name = "DDI B IO power well",
 		.domains = SKL_DISPLAY_DDI_IO_B_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = SKL_DISP_PW_DDI_B,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = SKL_PW_CTL_IDX_DDI_B,
+		},
 	},
 	{
 		.name = "DDI C IO power well",
 		.domains = SKL_DISPLAY_DDI_IO_C_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = SKL_DISP_PW_DDI_C,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = SKL_PW_CTL_IDX_DDI_C,
+		},
 	},
 	{
 		.name = "DDI D IO power well",
 		.domains = SKL_DISPLAY_DDI_IO_D_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = SKL_DISP_PW_DDI_D,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = SKL_PW_CTL_IDX_DDI_D,
+		},
 	},
 };
 
-static struct i915_power_well bxt_power_wells[] = {
+static const struct i915_power_well_desc bxt_power_wells[] = {
 	{
 		.name = "always-on",
 		.always_on = 1,
 		.domains = POWER_DOMAIN_MASK,
 		.ops = &i9xx_always_on_power_well_ops,
-		.id = I915_DISP_PW_ALWAYS_ON,
+		.id = DISP_PW_ID_NONE,
 	},
 	{
 		.name = "power well 1",
···
 		.ops = &hsw_power_well_ops,
 		.id = SKL_DISP_PW_1,
 		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = SKL_PW_CTL_IDX_PW_1,
 			.hsw.has_fuses = true,
 		},
 	},
···
 		.name = "DC off",
 		.domains = BXT_DISPLAY_DC_OFF_POWER_DOMAINS,
 		.ops = &gen9_dc_off_power_well_ops,
-		.id = SKL_DISP_PW_DC_OFF,
+		.id = DISP_PW_ID_NONE,
 	},
 	{
 		.name = "power well 2",
···
 		.ops = &hsw_power_well_ops,
 		.id = SKL_DISP_PW_2,
 		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = SKL_PW_CTL_IDX_PW_2,
 			.hsw.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
 			.hsw.has_vga = true,
 			.hsw.has_fuses = true,
···
 		.name = "dpio-common-a",
 		.domains = BXT_DPIO_CMN_A_POWER_DOMAINS,
 		.ops = &bxt_dpio_cmn_power_well_ops,
-		.id = BXT_DPIO_CMN_A,
+		.id = BXT_DISP_PW_DPIO_CMN_A,
 		{
 			.bxt.phy = DPIO_PHY1,
 		},
···
 		.name = "dpio-common-bc",
 		.domains = BXT_DPIO_CMN_BC_POWER_DOMAINS,
 		.ops = &bxt_dpio_cmn_power_well_ops,
-		.id = BXT_DPIO_CMN_BC,
+		.id = VLV_DISP_PW_DPIO_CMN_BC,
 		{
 			.bxt.phy = DPIO_PHY0,
 		},
 	},
 };
 
-static struct i915_power_well glk_power_wells[] = {
+static const struct i915_power_well_desc glk_power_wells[] = {
 	{
 		.name = "always-on",
 		.always_on = 1,
 		.domains = POWER_DOMAIN_MASK,
 		.ops = &i9xx_always_on_power_well_ops,
-		.id = I915_DISP_PW_ALWAYS_ON,
+		.id = DISP_PW_ID_NONE,
 	},
 	{
 		.name = "power well 1",
···
 		.ops = &hsw_power_well_ops,
 		.id = SKL_DISP_PW_1,
 		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = SKL_PW_CTL_IDX_PW_1,
 			.hsw.has_fuses = true,
 		},
 	},
···
 		.name = "DC off",
 		.domains = GLK_DISPLAY_DC_OFF_POWER_DOMAINS,
 		.ops = &gen9_dc_off_power_well_ops,
-		.id = SKL_DISP_PW_DC_OFF,
+		.id = DISP_PW_ID_NONE,
 	},
 	{
 		.name = "power well 2",
···
 		.ops = &hsw_power_well_ops,
 		.id = SKL_DISP_PW_2,
 		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = SKL_PW_CTL_IDX_PW_2,
 			.hsw.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
 			.hsw.has_vga = true,
 			.hsw.has_fuses = true,
···
 		.name = "dpio-common-a",
 		.domains = GLK_DPIO_CMN_A_POWER_DOMAINS,
 		.ops = &bxt_dpio_cmn_power_well_ops,
-		.id = BXT_DPIO_CMN_A,
+		.id = BXT_DISP_PW_DPIO_CMN_A,
 		{
 			.bxt.phy = DPIO_PHY1,
 		},
···
 		.name = "dpio-common-b",
 		.domains = GLK_DPIO_CMN_B_POWER_DOMAINS,
 		.ops = &bxt_dpio_cmn_power_well_ops,
-		.id = BXT_DPIO_CMN_BC,
+		.id = VLV_DISP_PW_DPIO_CMN_BC,
 		{
 			.bxt.phy = DPIO_PHY0,
 		},
···
 		.name = "dpio-common-c",
 		.domains = GLK_DPIO_CMN_C_POWER_DOMAINS,
 		.ops = &bxt_dpio_cmn_power_well_ops,
-		.id = GLK_DPIO_CMN_C,
+		.id = GLK_DISP_PW_DPIO_CMN_C,
 		{
 			.bxt.phy = DPIO_PHY2,
 		},
···
 		.name = "AUX A",
 		.domains = GLK_DISPLAY_AUX_A_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = GLK_DISP_PW_AUX_A,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = GLK_PW_CTL_IDX_AUX_A,
+		},
 	},
 	{
 		.name = "AUX B",
 		.domains = GLK_DISPLAY_AUX_B_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = GLK_DISP_PW_AUX_B,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = GLK_PW_CTL_IDX_AUX_B,
+		},
 	},
 	{
 		.name = "AUX C",
 		.domains = GLK_DISPLAY_AUX_C_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = GLK_DISP_PW_AUX_C,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = GLK_PW_CTL_IDX_AUX_C,
+		},
 	},
 	{
 		.name = "DDI A IO power well",
 		.domains = GLK_DISPLAY_DDI_IO_A_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = GLK_DISP_PW_DDI_A,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = GLK_PW_CTL_IDX_DDI_A,
+		},
 	},
 	{
 		.name = "DDI B IO power well",
 		.domains = GLK_DISPLAY_DDI_IO_B_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = SKL_DISP_PW_DDI_B,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = SKL_PW_CTL_IDX_DDI_B,
+		},
 	},
 	{
 		.name = "DDI C IO power well",
 		.domains = GLK_DISPLAY_DDI_IO_C_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = SKL_DISP_PW_DDI_C,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = SKL_PW_CTL_IDX_DDI_C,
+		},
 	},
 };
 
-static struct i915_power_well cnl_power_wells[] = {
+static const struct i915_power_well_desc cnl_power_wells[] = {
 	{
 		.name = "always-on",
 		.always_on = 1,
 		.domains = POWER_DOMAIN_MASK,
 		.ops = &i9xx_always_on_power_well_ops,
-		.id = I915_DISP_PW_ALWAYS_ON,
+		.id = DISP_PW_ID_NONE,
 	},
 	{
 		.name = "power well 1",
···
 		.ops = &hsw_power_well_ops,
 		.id = SKL_DISP_PW_1,
 		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = SKL_PW_CTL_IDX_PW_1,
 			.hsw.has_fuses = true,
 		},
 	},
···
 		.name = "AUX A",
 		.domains = CNL_DISPLAY_AUX_A_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = CNL_DISP_PW_AUX_A,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = GLK_PW_CTL_IDX_AUX_A,
+		},
 	},
 	{
 		.name = "AUX B",
 		.domains = CNL_DISPLAY_AUX_B_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = CNL_DISP_PW_AUX_B,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = GLK_PW_CTL_IDX_AUX_B,
+		},
 	},
 	{
 		.name = "AUX C",
 		.domains = CNL_DISPLAY_AUX_C_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = CNL_DISP_PW_AUX_C,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = GLK_PW_CTL_IDX_AUX_C,
+		},
 	},
 	{
 		.name = "AUX D",
 		.domains = CNL_DISPLAY_AUX_D_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = CNL_DISP_PW_AUX_D,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = CNL_PW_CTL_IDX_AUX_D,
+		},
 	},
 	{
 		.name = "DC off",
 		.domains = CNL_DISPLAY_DC_OFF_POWER_DOMAINS,
 		.ops = &gen9_dc_off_power_well_ops,
-		.id = SKL_DISP_PW_DC_OFF,
+		.id = DISP_PW_ID_NONE,
 	},
 	{
 		.name = "power well 2",
···
 		.ops = &hsw_power_well_ops,
 		.id = SKL_DISP_PW_2,
 		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = SKL_PW_CTL_IDX_PW_2,
 			.hsw.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
 			.hsw.has_vga = true,
 			.hsw.has_fuses = true,
···
 		.name = "DDI A IO power well",
 		.domains = CNL_DISPLAY_DDI_A_IO_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = CNL_DISP_PW_DDI_A,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = GLK_PW_CTL_IDX_DDI_A,
+		},
 	},
 	{
 		.name = "DDI B IO power well",
 		.domains = CNL_DISPLAY_DDI_B_IO_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = SKL_DISP_PW_DDI_B,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = SKL_PW_CTL_IDX_DDI_B,
+		},
 	},
 	{
 		.name = "DDI C IO power well",
 		.domains = CNL_DISPLAY_DDI_C_IO_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = SKL_DISP_PW_DDI_C,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = SKL_PW_CTL_IDX_DDI_C,
+		},
 	},
 	{
 		.name = "DDI D IO power well",
 		.domains = CNL_DISPLAY_DDI_D_IO_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = SKL_DISP_PW_DDI_D,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = SKL_PW_CTL_IDX_DDI_D,
+		},
 	},
 	{
 		.name = "DDI F IO power well",
 		.domains = CNL_DISPLAY_DDI_F_IO_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = CNL_DISP_PW_DDI_F,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = CNL_PW_CTL_IDX_DDI_F,
+		},
 	},
 	{
 		.name = "AUX F",
 		.domains = CNL_DISPLAY_AUX_F_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = CNL_DISP_PW_AUX_F,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = CNL_PW_CTL_IDX_AUX_F,
+		},
 	},
 };
 
···
 	.is_enabled = hsw_power_well_enabled,
 };
 
-static struct i915_power_well icl_power_wells[] = {
+static const struct i915_power_well_regs icl_aux_power_well_regs = {
+	.bios	= ICL_PWR_WELL_CTL_AUX1,
+	.driver	= ICL_PWR_WELL_CTL_AUX2,
+	.debug	= ICL_PWR_WELL_CTL_AUX4,
+};
+
+static const struct i915_power_well_regs icl_ddi_power_well_regs = {
+	.bios	= ICL_PWR_WELL_CTL_DDI1,
+	.driver	= ICL_PWR_WELL_CTL_DDI2,
+	.debug	= ICL_PWR_WELL_CTL_DDI4,
+};
+
+static const struct i915_power_well_desc icl_power_wells[] = {
 	{
 		.name = "always-on",
 		.always_on = 1,
 		.domains = POWER_DOMAIN_MASK,
 		.ops = &i9xx_always_on_power_well_ops,
-		.id = I915_DISP_PW_ALWAYS_ON,
+		.id = DISP_PW_ID_NONE,
 	},
 	{
 		.name = "power well 1",
 		/* Handled by the DMC firmware */
 		.domains = 0,
 		.ops = &hsw_power_well_ops,
-		.id = ICL_DISP_PW_1,
-		.hsw.has_fuses = true,
+		.id = SKL_DISP_PW_1,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_PW_1,
+			.hsw.has_fuses = true,
+		},
 	},
 	{
 		.name = "power well 2",
 		.domains = ICL_PW_2_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = ICL_DISP_PW_2,
-		.hsw.has_fuses = true,
+		.id = SKL_DISP_PW_2,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_PW_2,
+			.hsw.has_fuses = true,
+		},
 	},
 	{
 		.name = "DC off",
 		.domains = ICL_DISPLAY_DC_OFF_POWER_DOMAINS,
 		.ops = &gen9_dc_off_power_well_ops,
-		.id = SKL_DISP_PW_DC_OFF,
+		.id = DISP_PW_ID_NONE,
 	},
 	{
 		.name = "power well 3",
 		.domains = ICL_PW_3_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = ICL_DISP_PW_3,
-		.hsw.irq_pipe_mask = BIT(PIPE_B),
-		.hsw.has_vga = true,
-		.hsw.has_fuses = true,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_PW_3,
+			.hsw.irq_pipe_mask = BIT(PIPE_B),
+			.hsw.has_vga = true,
+			.hsw.has_fuses = true,
+		},
 	},
 	{
 		.name = "DDI A IO",
 		.domains = ICL_DDI_IO_A_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = ICL_DISP_PW_DDI_A,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_ddi_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_DDI_A,
+		},
 	},
 	{
 		.name = "DDI B IO",
 		.domains = ICL_DDI_IO_B_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = ICL_DISP_PW_DDI_B,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_ddi_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_DDI_B,
+		},
 	},
 	{
 		.name = "DDI C IO",
 		.domains = ICL_DDI_IO_C_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = ICL_DISP_PW_DDI_C,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_ddi_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_DDI_C,
+		},
 	},
 	{
 		.name = "DDI D IO",
 		.domains = ICL_DDI_IO_D_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = ICL_DISP_PW_DDI_D,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_ddi_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_DDI_D,
+		},
 	},
 	{
 		.name = "DDI E IO",
 		.domains = ICL_DDI_IO_E_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = ICL_DISP_PW_DDI_E,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_ddi_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_DDI_E,
+		},
 	},
 	{
 		.name = "DDI F IO",
 		.domains = ICL_DDI_IO_F_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = ICL_DISP_PW_DDI_F,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_ddi_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_DDI_F,
+		},
 	},
 	{
 		.name = "AUX A",
 		.domains = ICL_AUX_A_IO_POWER_DOMAINS,
 		.ops = &icl_combo_phy_aux_power_well_ops,
-		.id = ICL_DISP_PW_AUX_A,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_AUX_A,
+		},
 	},
 	{
 		.name = "AUX B",
 		.domains = ICL_AUX_B_IO_POWER_DOMAINS,
 		.ops = &icl_combo_phy_aux_power_well_ops,
-		.id = ICL_DISP_PW_AUX_B,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_AUX_B,
+		},
 	},
 	{
 		.name = "AUX C",
 		.domains = ICL_AUX_C_IO_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = ICL_DISP_PW_AUX_C,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_AUX_C,
+		},
 	},
 	{
 		.name = "AUX D",
 		.domains = ICL_AUX_D_IO_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = ICL_DISP_PW_AUX_D,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_AUX_D,
+		},
 	},
 	{
 		.name = "AUX E",
 		.domains = ICL_AUX_E_IO_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = ICL_DISP_PW_AUX_E,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_AUX_E,
+		},
 	},
 	{
 		.name = "AUX F",
 		.domains = ICL_AUX_F_IO_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = ICL_DISP_PW_AUX_F,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_AUX_F,
+		},
 	},
 	{
 		.name = "AUX TBT1",
 		.domains = ICL_AUX_TBT1_IO_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = ICL_DISP_PW_AUX_TBT1,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_AUX_TBT1,
+		},
 	},
 	{
 		.name = "AUX TBT2",
 		.domains = ICL_AUX_TBT2_IO_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = ICL_DISP_PW_AUX_TBT2,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_AUX_TBT2,
+		},
 	},
 	{
 		.name = "AUX TBT3",
 		.domains = ICL_AUX_TBT3_IO_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = ICL_DISP_PW_AUX_TBT3,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_AUX_TBT3,
+		},
 	},
 	{
 		.name = "AUX TBT4",
 		.domains = ICL_AUX_TBT4_IO_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = ICL_DISP_PW_AUX_TBT4,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_AUX_TBT4,
+		},
 	},
 	{
 		.name = "power well 4",
 		.domains = ICL_PW_4_POWER_DOMAINS,
 		.ops = &hsw_power_well_ops,
-		.id = ICL_DISP_PW_4,
-		.hsw.has_fuses = true,
-		.hsw.irq_pipe_mask = BIT(PIPE_C),
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_PW_4,
+			.hsw.has_fuses = true,
+			.hsw.irq_pipe_mask = BIT(PIPE_C),
+		},
 	},
 };
 
···
 	return mask;
 }
 
-static void assert_power_well_ids_unique(struct drm_i915_private *dev_priv)
+static int
+__set_power_wells(struct i915_power_domains *power_domains,
+		  const struct i915_power_well_desc *power_well_descs,
+		  int power_well_count)
 {
-	struct i915_power_domains *power_domains = &dev_priv->power_domains;
-	u64 power_well_ids;
+	u64 power_well_ids = 0;
 	int i;
 
-	power_well_ids = 0;
-	for (i = 0; i < power_domains->power_well_count; i++) {
-		enum i915_power_well_id id = power_domains->power_wells[i].id;
+	power_domains->power_well_count = power_well_count;
+	power_domains->power_wells =
+				kcalloc(power_well_count,
+					sizeof(*power_domains->power_wells),
+					GFP_KERNEL);
+	if (!power_domains->power_wells)
+		return -ENOMEM;
+
+	for (i = 0; i < power_well_count; i++) {
+		enum i915_power_well_id id = power_well_descs[i].id;
+
+		power_domains->power_wells[i].desc = &power_well_descs[i];
+
+		if (id == DISP_PW_ID_NONE)
+			continue;
 
 		WARN_ON(id >= sizeof(power_well_ids) * 8);
 		WARN_ON(power_well_ids & BIT_ULL(id));
 		power_well_ids |= BIT_ULL(id);
 	}
+
+	return 0;
 }
 
-#define set_power_wells(power_domains, __power_wells) ({		\
-	(power_domains)->power_wells = (__power_wells);			\
-	(power_domains)->power_well_count = ARRAY_SIZE(__power_wells);	\
-})
+#define set_power_wells(power_domains, __power_well_descs) \
+	__set_power_wells(power_domains, __power_well_descs, \
+			  ARRAY_SIZE(__power_well_descs))
 
 /**
  * intel_power_domains_init - initializes the power domain structures
···
 int intel_power_domains_init(struct drm_i915_private *dev_priv)
 {
 	struct i915_power_domains *power_domains = &dev_priv->power_domains;
+	int err;
 
 	i915_modparams.disable_power_well =
 		sanitize_disable_power_well_option(dev_priv,
···
 	 * the disabling order is reversed.
 	 */
 	if (IS_ICELAKE(dev_priv)) {
-		set_power_wells(power_domains, icl_power_wells);
+		err = set_power_wells(power_domains, icl_power_wells);
 	} else if (IS_HASWELL(dev_priv)) {
-		set_power_wells(power_domains, hsw_power_wells);
+		err = set_power_wells(power_domains, hsw_power_wells);
 	} else if (IS_BROADWELL(dev_priv)) {
-		set_power_wells(power_domains, bdw_power_wells);
+		err = set_power_wells(power_domains, bdw_power_wells);
 	} else if (IS_GEN9_BC(dev_priv)) {
-		set_power_wells(power_domains, skl_power_wells);
+		err = set_power_wells(power_domains, skl_power_wells);
 	} else if (IS_CANNONLAKE(dev_priv)) {
-		set_power_wells(power_domains, cnl_power_wells);
+		err = set_power_wells(power_domains, cnl_power_wells);
 
 		/*
 		 * DDI and Aux IO are getting enabled for all ports
···
 			power_domains->power_well_count -= 2;
 
 	} else if (IS_BROXTON(dev_priv)) {
-		set_power_wells(power_domains, bxt_power_wells);
+		err = set_power_wells(power_domains, bxt_power_wells);
 	} else if (IS_GEMINILAKE(dev_priv)) {
-		set_power_wells(power_domains, glk_power_wells);
+		err = set_power_wells(power_domains, glk_power_wells);
 	} else if (IS_CHERRYVIEW(dev_priv)) {
-		set_power_wells(power_domains, chv_power_wells);
+		err = set_power_wells(power_domains, chv_power_wells);
 	} else if (IS_VALLEYVIEW(dev_priv)) {
-		set_power_wells(power_domains, vlv_power_wells);
+		err = set_power_wells(power_domains, vlv_power_wells);
 	} else if (IS_I830(dev_priv)) {
-		set_power_wells(power_domains, i830_power_wells);
+		err = set_power_wells(power_domains, i830_power_wells);
 	} else {
-		set_power_wells(power_domains, i9xx_always_on_power_well);
+		err = set_power_wells(power_domains, i9xx_always_on_power_well);
 	}
 
-	assert_power_well_ids_unique(dev_priv);
-
-	return 0;
+	return err;
 }
 
 /**
- * intel_power_domains_fini - finalizes the power domain structures
+ * intel_power_domains_cleanup - clean up power domains resources
  * @dev_priv: i915 device instance
  *
- * Finalizes the power domain structures for @dev_priv depending upon the
- * supported platform. This function also disables runtime pm and ensures that
- * the device stays powered up so that the driver can be reloaded.
+ * Release any resources acquired by intel_power_domains_init()
  */
-void intel_power_domains_fini(struct drm_i915_private *dev_priv)
+void intel_power_domains_cleanup(struct drm_i915_private *dev_priv)
 {
-	struct device *kdev = &dev_priv->drm.pdev->dev;
-
-	/*
-	 * The i915.ko module is still not prepared to be loaded when
-	 * the power well is not enabled, so just enable it in case
-	 * we're going to unload/reload.
-	 * The following also reacquires the RPM reference the core passed
-	 * to the driver during loading, which is dropped in
-	 * intel_runtime_pm_enable(). We have to hand back the control of the
-	 * device to the core with this reference held.
-	 */
-	intel_display_set_init_power(dev_priv, true);
-
-	/* Remove the refcount we took to keep power well support disabled. */
-	if (!i915_modparams.disable_power_well)
-		intel_display_power_put(dev_priv, POWER_DOMAIN_INIT);
-
-	/*
-	 * Remove the refcount we took in intel_runtime_pm_enable() in case
-	 * the platform doesn't support runtime PM.
-	 */
-	if (!HAS_RUNTIME_PM(dev_priv))
-		pm_runtime_put(kdev);
+	kfree(dev_priv->power_domains.power_wells);
 }
 
 static void intel_power_domains_sync_hw(struct drm_i915_private *dev_priv)
···
 
 	mutex_lock(&power_domains->lock);
 	for_each_power_well(dev_priv, power_well) {
-		power_well->ops->sync_hw(dev_priv, power_well);
-		power_well->hw_enabled = power_well->ops->is_enabled(dev_priv,
-								     power_well);
+		power_well->desc->ops->sync_hw(dev_priv, power_well);
+		power_well->hw_enabled =
+			power_well->desc->ops->is_enabled(dev_priv, power_well);
 	}
 	mutex_unlock(&power_domains->lock);
 }
···
 	 *    The AUX IO power wells will be enabled on demand.
 	 */
 	mutex_lock(&power_domains->lock);
-	well = lookup_power_well(dev_priv, ICL_DISP_PW_1);
+	well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
 	intel_power_well_enable(dev_priv, well);
 	mutex_unlock(&power_domains->lock);
 
···
 
 	/* 7. Setup MBUS. */
 	icl_mbus_init(dev_priv);
-
-	/* 8. CHICKEN_DCPR_1 */
-	I915_WRITE(GEN8_CHICKEN_DCPR_1, I915_READ(GEN8_CHICKEN_DCPR_1) |
-					CNL_DDI_CLOCK_REG_ACCESS_ON);
 }
 
 static void icl_display_core_uninit(struct drm_i915_private *dev_priv)
···
 	 *    disabled at this point.
 	 */
 	mutex_lock(&power_domains->lock);
-	well = lookup_power_well(dev_priv, ICL_DISP_PW_1);
+	well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
 	intel_power_well_disable(dev_priv, well);
 	mutex_unlock(&power_domains->lock);
 
···
 static void chv_phy_control_init(struct drm_i915_private *dev_priv)
 {
 	struct i915_power_well *cmn_bc =
-		lookup_power_well(dev_priv, PUNIT_POWER_WELL_DPIO_CMN_BC);
+		lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC);
 	struct i915_power_well *cmn_d =
-		lookup_power_well(dev_priv, PUNIT_POWER_WELL_DPIO_CMN_D);
+		lookup_power_well(dev_priv, CHV_DISP_PW_DPIO_CMN_D);
 
 	/*
 	 * DISPLAY_PHY_CONTROL can get corrupted if read. As a
···
 	 * override and set the lane powerdown bits accding to the
 	 * current lane status.
 	 */
-	if (cmn_bc->ops->is_enabled(dev_priv, cmn_bc)) {
+	if (cmn_bc->desc->ops->is_enabled(dev_priv, cmn_bc)) {
 		uint32_t status = I915_READ(DPLL(PIPE_A));
 		unsigned int mask;
 
···
 		dev_priv->chv_phy_assert[DPIO_PHY0] = true;
 	}
 
-	if (cmn_d->ops->is_enabled(dev_priv, cmn_d)) {
+	if (cmn_d->desc->ops->is_enabled(dev_priv, cmn_d)) {
 		uint32_t status = I915_READ(DPIO_PHY_STATUS);
 		unsigned int mask;
 
···
 static void vlv_cmnlane_wa(struct drm_i915_private *dev_priv)
 {
 	struct i915_power_well *cmn =
-		lookup_power_well(dev_priv, PUNIT_POWER_WELL_DPIO_CMN_BC);
+		lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC);
 	struct i915_power_well *disp2d =
-		lookup_power_well(dev_priv, PUNIT_POWER_WELL_DISP2D);
+		lookup_power_well(dev_priv, VLV_DISP_PW_DISP2D);
 
 	/* If the display might be already active skip this */
-	if (cmn->ops->is_enabled(dev_priv, cmn) &&
-	    disp2d->ops->is_enabled(dev_priv, disp2d) &&
+	if (cmn->desc->ops->is_enabled(dev_priv, cmn) &&
+	    disp2d->desc->ops->is_enabled(dev_priv, disp2d) &&
 	    I915_READ(DPIO_CTL) & DPIO_CMNRST)
 		return;
 
 	DRM_DEBUG_KMS("toggling display PHY side reset\n");
 
 	/* cmnlane needs DPLL registers */
-	disp2d->ops->enable(dev_priv, disp2d);
+	disp2d->desc->ops->enable(dev_priv, disp2d);
 
 	/*
 	 * From VLV2A0_DP_eDP_HDMI_DPIO_driver_vbios_notes_11.docx:
···
 	 * Simply ungating isn't enough to reset the PHY enough to get
 	 * ports and lanes running.
 	 */
-	cmn->ops->disable(dev_priv, cmn);
+	cmn->desc->ops->disable(dev_priv, cmn);
 }
+
+static void intel_power_domains_verify_state(struct drm_i915_private *dev_priv);
 
 /**
  * intel_power_domains_init_hw - initialize hardware power domain state
···
  *
  * This function initializes the hardware power domain state and enables all
  * power wells belonging to the INIT power domain. Power wells in other
- * domains (and not in the INIT domain) are referenced or disabled during the
- * modeset state HW readout. After that the reference count of each power well
- * must match its HW enabled state, see intel_power_domains_verify_state().
+ * domains (and not in the INIT domain) are referenced or disabled by
+ * intel_modeset_readout_hw_state(). After that the reference count of each
+ * power well must match its HW enabled state, see
+ * intel_power_domains_verify_state().
+ *
+ * It will return with power domains disabled (to be enabled later by
+ * intel_power_domains_enable()) and must be paired with
+ * intel_power_domains_fini_hw().
  */
 void intel_power_domains_init_hw(struct drm_i915_private *dev_priv, bool resume)
 {
···
 		mutex_unlock(&power_domains->lock);
 	}
 
-	/* For now, we need the power well to be always enabled. */
-	intel_display_set_init_power(dev_priv, true);
+	/*
+	 * Keep all power wells enabled for any dependent HW access during
+	 * initialization and to make sure we keep BIOS enabled display HW
+	 * resources powered until display HW readout is complete. We drop
+	 * this reference in intel_power_domains_enable().
+	 */
+	intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
 	/* Disable power support if the user asked so. */
 	if (!i915_modparams.disable_power_well)
 		intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
 	intel_power_domains_sync_hw(dev_priv);
+
 	power_domains->initializing = false;
+}
+
+/**
+ * intel_power_domains_fini_hw - deinitialize hw power domain state
+ * @dev_priv: i915 device instance
+ *
+ * De-initializes the display power domain HW state. It also ensures that the
+ * device stays powered up so that the driver can be reloaded.
+ *
+ * It must be called with power domains already disabled (after a call to
+ * intel_power_domains_disable()) and must be paired with
+ * intel_power_domains_init_hw().
+ */
+void intel_power_domains_fini_hw(struct drm_i915_private *dev_priv)
+{
+	/* Keep the power well enabled, but cancel its rpm wakeref. */
+	intel_runtime_pm_put(dev_priv);
+
+	/* Remove the refcount we took to keep power well support disabled. */
+	if (!i915_modparams.disable_power_well)
+		intel_display_power_put(dev_priv, POWER_DOMAIN_INIT);
+
+	intel_power_domains_verify_state(dev_priv);
+}
+
+/**
+ * intel_power_domains_enable - enable toggling of display power wells
+ * @dev_priv: i915 device instance
+ *
+ * Enable the ondemand enabling/disabling of the display power wells. Note that
+ * power wells not belonging to POWER_DOMAIN_INIT are allowed to be toggled
+ * only at specific points of the display modeset sequence, thus they are not
+ * affected by the intel_power_domains_enable()/disable() calls. The purpose
+ * of these function is to keep the rest of power wells enabled until the end
+ * of display HW readout (which will acquire the power references reflecting
+ * the current HW state).
+ */
+void intel_power_domains_enable(struct drm_i915_private *dev_priv)
+{
+	intel_display_power_put(dev_priv, POWER_DOMAIN_INIT);
+
+	intel_power_domains_verify_state(dev_priv);
+}
+
+/**
+ * intel_power_domains_disable - disable toggling of display power wells
+ * @dev_priv: i915 device instance
+ *
+ * Disable the ondemand enabling/disabling of the display power wells. See
+ * intel_power_domains_enable() for which power wells this call controls.
+ */
+void intel_power_domains_disable(struct drm_i915_private *dev_priv)
+{
+	intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
+
+	intel_power_domains_verify_state(dev_priv);
 }
 
 /**
  * intel_power_domains_suspend - suspend power domain state
  * @dev_priv: i915 device instance
+ * @suspend_mode: specifies the target suspend state (idle, mem, hibernation)
  *
  * This function prepares the hardware power domain state before entering
- * system suspend. It must be paired with intel_power_domains_init_hw().
+ * system suspend.
+ *
+ * It must be called with power domains already disabled (after a call to
+ * intel_power_domains_disable()) and paired with intel_power_domains_resume().
  */
-void intel_power_domains_suspend(struct drm_i915_private *dev_priv)
+void intel_power_domains_suspend(struct drm_i915_private *dev_priv,
+				 enum i915_drm_suspend_mode suspend_mode)
 {
+	struct i915_power_domains *power_domains = &dev_priv->power_domains;
+
+	intel_display_power_put(dev_priv, POWER_DOMAIN_INIT);
+
+	/*
+	 * In case of suspend-to-idle (aka S0ix) on a DMC platform without DC9
+	 * support don't manually deinit the power domains. This also means the
+	 * CSR/DMC firmware will stay active, it will power down any HW
+	 * resources as required and also enable deeper system power states
+	 * that would be blocked if the firmware was inactive.
+	 */
+	if (!(dev_priv->csr.allowed_dc_mask & DC_STATE_EN_DC9) &&
+	    suspend_mode == I915_DRM_SUSPEND_IDLE &&
+	    dev_priv->csr.dmc_payload != NULL) {
+		intel_power_domains_verify_state(dev_priv);
+		return;
+	}
+
 	/*
 	 * Even if power well support was disabled we still want to disable
-	 * power wells while we are system suspended.
+	 * power wells if power domains must be deinitialized for suspend.
 	 */
-	if (!i915_modparams.disable_power_well)
+	if (!i915_modparams.disable_power_well) {
 		intel_display_power_put(dev_priv, POWER_DOMAIN_INIT);
+		intel_power_domains_verify_state(dev_priv);
+	}
 
 	if (IS_ICELAKE(dev_priv))
 		icl_display_core_uninit(dev_priv);
···
 		skl_display_core_uninit(dev_priv);
 	else if (IS_GEN9_LP(dev_priv))
 		bxt_display_core_uninit(dev_priv);
+
+	power_domains->display_core_suspended = true;
 }
+
+/**
+ * intel_power_domains_resume - resume power domain state
+ * @dev_priv: i915 device instance
+ *
+ * This function resume the hardware power domain state during system resume.
+ *
+ * It will return with power domain support disabled (to be enabled later by
+ * intel_power_domains_enable()) and must be paired with
+ * intel_power_domains_suspend().
+ */
+void intel_power_domains_resume(struct drm_i915_private *dev_priv)
+{
+	struct i915_power_domains *power_domains = &dev_priv->power_domains;
+
+	if (power_domains->display_core_suspended) {
+		intel_power_domains_init_hw(dev_priv, true);
+		power_domains->display_core_suspended = false;
+	} else {
+		intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
+	}
+
+	intel_power_domains_verify_state(dev_priv);
+}
+
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
 
 static void intel_power_domains_dump_info(struct drm_i915_private *dev_priv)
 {
···
 		enum intel_display_power_domain domain;
 
 		DRM_DEBUG_DRIVER("%-25s %d\n",
-				 power_well->name, power_well->count);
+				 power_well->desc->name, power_well->count);
 
-		for_each_power_domain(domain, power_well->domains)
+		for_each_power_domain(domain, power_well->desc->domains)
 			DRM_DEBUG_DRIVER("  %-23s %d\n",
 					 intel_display_power_domain_str(domain),
 					 power_domains->domain_use_count[domain]);
···
  * acquiring reference counts for any power wells in use and disabling the
  * ones left on by BIOS but not required by any active output.
  */
-void intel_power_domains_verify_state(struct drm_i915_private *dev_priv)
+static void intel_power_domains_verify_state(struct drm_i915_private *dev_priv)
 {
 	struct i915_power_domains *power_domains = &dev_priv->power_domains;
 	struct i915_power_well *power_well;
···
 		 * and PW1 power wells) are under FW control, so ignore them,
 		 * since their state can change asynchronously.
 		 */
-		if (!power_well->domains)
+		if (!power_well->desc->domains)
 			continue;
 
-		enabled = power_well->ops->is_enabled(dev_priv, power_well);
-		if ((power_well->count || power_well->always_on) != enabled)
+		enabled = power_well->desc->ops->is_enabled(dev_priv,
+							    power_well);
+		if ((power_well->count || power_well->desc->always_on) !=
+		    enabled)
 			DRM_ERROR("power well %s state mismatch (refcount %d/enabled %d)",
-				  power_well->name, power_well->count, enabled);
+				  power_well->desc->name,
+				  power_well->count, enabled);
 
 		domains_count = 0;
-		for_each_power_domain(domain, power_well->domains)
+		for_each_power_domain(domain, power_well->desc->domains)
 			domains_count += power_domains->domain_use_count[domain];
 
 		if (power_well->count != domains_count) {
 			DRM_ERROR("power well %s refcount/domain refcount mismatch "
 				  "(refcount %d/domains refcount %d)\n",
-				  power_well->name, power_well->count,
+				  power_well->desc->name, power_well->count,
 				  domains_count);
 			dump_domain_info = true;
 		}
···
 
 	mutex_unlock(&power_domains->lock);
 }
+
+#else
+
+static void intel_power_domains_verify_state(struct drm_i915_private *dev_priv)
+{
+}
+
+#endif
 
 /**
  * intel_runtime_pm_get - grab a runtime pm reference
···
  * This function enables runtime pm at the end of the driver load sequence.
  *
  * Note that this function does currently not enable runtime pm for the
- * subordinate display power domains. That is only done on the first modeset
- * using intel_display_set_init_power().
+ * subordinate display power domains. That is done by
+ * intel_power_domains_enable().
  */
 void intel_runtime_pm_enable(struct drm_i915_private *dev_priv)
 {
 	struct pci_dev *pdev = dev_priv->drm.pdev;
 	struct device *kdev = &pdev->dev;
+
+	/*
+	 * Disable the system suspend direct complete optimization, which can
+	 * leave the device suspended skipping the driver's suspend handlers
+	 * if the device was already runtime suspended. This is needed due to
+	 * the difference in our runtime and system suspend sequence and
+	 * becaue the HDA driver may require us to enable the audio power
+	 * domain during system suspend.
+	 */
+	dev_pm_set_driver_flags(kdev, DPM_FLAG_NEVER_SKIP);
 
 	pm_runtime_set_autosuspend_delay(kdev, 10000); /* 10s */
 	pm_runtime_mark_last_busy(kdev);
···
 	 * intel_power_domains_fini().
 	 */
 	pm_runtime_put_autosuspend(kdev);
+}
+
+void intel_runtime_pm_disable(struct drm_i915_private *dev_priv)
+{
+	struct pci_dev *pdev = dev_priv->drm.pdev;
+	struct device *kdev = &pdev->dev;
+
+	/* Transfer rpm ownership back to core */
+	WARN(pm_runtime_get_sync(&dev_priv->drm.pdev->dev) < 0,
+	     "Failed to pass rpm ownership back to core\n");
+
+	pm_runtime_dont_use_autosuspend(kdev);
+
+	if (!HAS_RUNTIME_PM(dev_priv))
+		pm_runtime_put(kdev);
 }

drivers/gpu/drm/i915/intel_sprite.c

···
 	bool need_vlv_dsi_wa = (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
 		intel_crtc_has_type(new_crtc_state, INTEL_OUTPUT_DSI);
 	DEFINE_WAIT(wait);
+	u32 psr_status;
 
 	vblank_start = adjusted_mode->crtc_vblank_start;
 	if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
···
 	 * VBL interrupts will start the PSR exit and prevent a PSR
 	 * re-entry as well.
 	 */
-	if (intel_psr_wait_for_idle(new_crtc_state))
-		DRM_ERROR("PSR idle timed out, atomic update may fail\n");
+	if (intel_psr_wait_for_idle(new_crtc_state, &psr_status))
+		DRM_ERROR("PSR idle timed out 0x%x, atomic update may fail\n",
+			  psr_status);
 
 	local_irq_disable();
 
···
 }
 
 static int
-intel_check_sprite_plane(struct intel_plane *plane,
-			 struct intel_crtc_state *crtc_state,
+intel_check_sprite_plane(struct intel_crtc_state *crtc_state,
 			 struct intel_plane_state *state)
 {
+	struct intel_plane *plane = to_intel_plane(state->base.plane);
 	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
 	struct drm_framebuffer *fb = state->base.fb;
···
 	case DRM_FORMAT_XBGR8888:
 	case DRM_FORMAT_ARGB8888:
 	case DRM_FORMAT_ABGR8888:
-		if (modifier == I915_FORMAT_MOD_Yf_TILED_CCS ||
-		    modifier == I915_FORMAT_MOD_Y_TILED_CCS)
+		if (is_ccs_modifier(modifier))
 			return true;
 		/* fall through */
 	case DRM_FORMAT_RGB565:

drivers/gpu/drm/i915/intel_uc_fw.c

···
 		goto fail;
 	}
 
-	ggtt_pin_bias = to_i915(uc_fw->obj->base.dev)->guc.ggtt_pin_bias;
+	ggtt_pin_bias = to_i915(uc_fw->obj->base.dev)->ggtt.pin_bias;
 	vma = i915_gem_object_ggtt_pin(uc_fw->obj, NULL, 0, 0,
 				       PIN_OFFSET_BIAS | ggtt_pin_bias);
 	if (IS_ERR(vma)) {

drivers/gpu/drm/i915/intel_uncore.c

···
 		fw_domain_reset(i915, d);
 }
 
+static inline u32 gt_thread_status(struct drm_i915_private *dev_priv)
+{
+	u32 val;
+
+	val = __raw_i915_read32(dev_priv, GEN6_GT_THREAD_STATUS_REG);
+	val &= GEN6_GT_THREAD_STATUS_CORE_MASK;
+
+	return val;
+}
+
 static void __gen6_gt_wait_for_thread_c0(struct drm_i915_private *dev_priv)
 {
-	/* w/a for a sporadic read returning 0 by waiting for the GT
+	/*
+	 * w/a for a sporadic read returning 0 by waiting for the GT
 	 * thread to wake up.
 	 */
-	if (wait_for_atomic_us((__raw_i915_read32(dev_priv, GEN6_GT_THREAD_STATUS_REG) &
-				GEN6_GT_THREAD_STATUS_CORE_MASK) == 0, 500))
-		DRM_ERROR("GT thread status wait timed out\n");
+	WARN_ONCE(wait_for_atomic_us(gt_thread_status(dev_priv) == 0, 5000),
+		  "GT thread status wait timed out\n");
 }
 
 static void fw_domains_get_with_thread_status(struct drm_i915_private *dev_priv,
···
 }
 
 static void i915_stop_engines(struct drm_i915_private *dev_priv,
-			      unsigned engine_mask)
+			      unsigned int engine_mask)
 {
 	struct intel_engine_cs *engine;
 	enum intel_engine_id id;
···
 	return gdrst & GRDOM_RESET_STATUS;
 }
 
-static int i915_do_reset(struct drm_i915_private *dev_priv, unsigned engine_mask)
+static int i915_do_reset(struct drm_i915_private *dev_priv,
+			 unsigned int engine_mask,
+			 unsigned int retry)
 {
 	struct pci_dev *pdev = dev_priv->drm.pdev;
 	int err;
···
 	return (gdrst & GRDOM_RESET_ENABLE) == 0;
 }
 
-static int g33_do_reset(struct drm_i915_private *dev_priv, unsigned engine_mask)
+static int g33_do_reset(struct drm_i915_private *dev_priv,
+			unsigned int engine_mask,
+			unsigned int retry)
 {
 	struct pci_dev *pdev = dev_priv->drm.pdev;
 
···
 	return wait_for(g4x_reset_complete(pdev), 500);
 }
 
-static int g4x_do_reset(struct drm_i915_private *dev_priv, unsigned engine_mask)
+static int g4x_do_reset(struct drm_i915_private *dev_priv,
+			unsigned int engine_mask,
+			unsigned int retry)
 {
 	struct pci_dev *pdev = dev_priv->drm.pdev;
 	int ret;
···
 }
 
 static int ironlake_do_reset(struct drm_i915_private *dev_priv,
-			     unsigned engine_mask)
+			     unsigned int engine_mask,
+			     unsigned int retry)
 {
 	int ret;
 
···
  * gen6_reset_engines - reset individual engines
  * @dev_priv: i915 device
  * @engine_mask: mask of intel_ring_flag() engines or ALL_ENGINES for full reset
+ * @retry: the count of of previous attempts to reset.
  *
  * This function will reset the individual engines that are set in engine_mask.
  * If you provide ALL_ENGINES as mask, full global domain reset will be issued.
···
  * Returns 0 on success, nonzero on error.
  */
 static int gen6_reset_engines(struct drm_i915_private *dev_priv,
-			      unsigned engine_mask)
+			      unsigned int engine_mask,
+			      unsigned int retry)
 {
 	struct intel_engine_cs *engine;
 	const u32 hw_engine_mask[I915_NUM_ENGINES] = {
···
  * Returns 0 on success, nonzero on error.
  */
 static int gen11_reset_engines(struct drm_i915_private *dev_priv,
-			       unsigned engine_mask)
+			       unsigned int engine_mask)
 {
 	struct intel_engine_cs *engine;
 	const u32 hw_engine_mask[I915_NUM_ENGINES] = {
···
 	return ret;
 }
 
-static int gen8_reset_engine_start(struct intel_engine_cs *engine)
+static int gen8_engine_reset_prepare(struct intel_engine_cs *engine)
 {
 	struct drm_i915_private *dev_priv = engine->i915;
 	int ret;
···
 	return ret;
 }
 
-static void gen8_reset_engine_cancel(struct intel_engine_cs *engine)
+static void gen8_engine_reset_cancel(struct intel_engine_cs *engine)
 {
 	struct drm_i915_private *dev_priv = engine->i915;
 
···
 		      _MASKED_BIT_DISABLE(RESET_CTL_REQUEST_RESET));
 }
 
+static int reset_engines(struct drm_i915_private *i915,
+			 unsigned int engine_mask,
+			 unsigned int retry)
+{
+	if (INTEL_GEN(i915) >= 11)
+		return gen11_reset_engines(i915, engine_mask);
+	else
+		return gen6_reset_engines(i915, engine_mask, retry);
+}
+
 static int gen8_reset_engines(struct drm_i915_private *dev_priv,
-			      unsigned engine_mask)
+			      unsigned int engine_mask,
+			      unsigned int retry)
 {
 	struct intel_engine_cs *engine;
+	const bool reset_non_ready = retry >= 1;
 	unsigned int tmp;
 	int ret;
 
 	for_each_engine_masked(engine, dev_priv, engine_mask, tmp) {
-		if (gen8_reset_engine_start(engine)) {
-			ret = -EIO;
-			goto not_ready;
-		}
+		ret = gen8_engine_reset_prepare(engine);
+		if (ret && !reset_non_ready)
+			goto skip_reset;
+
+		/*
+		 * If this is not the first failed attempt to prepare,
+		 * we decide to proceed anyway.
+		 *
+		 * By doing so we risk context corruption and with
+		 * some gens (kbl), possible system hang if reset
+		 * happens during active bb execution.
+		 *
+		 * We rather take context corruption instead of
+		 * failed reset with a wedged driver/gpu. And
+		 * active bb execution case should be covered by
+		 * i915_stop_engines we have before the reset.
+		 */
 	}
 
-	if (INTEL_GEN(dev_priv) >= 11)
-		ret = gen11_reset_engines(dev_priv, engine_mask);
-	else
-		ret = gen6_reset_engines(dev_priv, engine_mask);
+	ret = reset_engines(dev_priv, engine_mask, retry);
 
-not_ready:
+skip_reset:
 	for_each_engine_masked(engine, dev_priv, engine_mask, tmp)
-		gen8_reset_engine_cancel(engine);
+		gen8_engine_reset_cancel(engine);
 
 	return ret;
 }
 
-typedef int (*reset_func)(struct drm_i915_private *, unsigned engine_mask);
+typedef int (*reset_func)(struct drm_i915_private *,
+			  unsigned int engine_mask, unsigned int retry);
 
 static reset_func intel_get_gpu_reset(struct drm_i915_private *dev_priv)
 {
···
 		return NULL;
 }
 
-int intel_gpu_reset(struct drm_i915_private *dev_priv, unsigned engine_mask)
+int intel_gpu_reset(struct drm_i915_private *dev_priv,
+		    const unsigned int engine_mask)
 {
 	reset_func reset = intel_get_gpu_reset(dev_priv);
-	int retry;
+	unsigned int retry;
 	int ret;
+
+	GEM_BUG_ON(!engine_mask);
 
 	/*
 	 * We want to perform per-engine reset from atomic context (e.g.
···
 
 		ret = -ENODEV;
 		if (reset) {
-			GEM_TRACE("engine_mask=%x\n", engine_mask);
-			ret = reset(dev_priv, engine_mask);
+			ret = reset(dev_priv, engine_mask, retry);
+			GEM_TRACE("engine_mask=%x, ret=%d, retry=%d\n",
+				  engine_mask, ret, retry);
 		}
 		if (ret != -ETIMEDOUT || engine_mask != ALL_ENGINES)
 			break;
···
 bool
 intel_uncore_arm_unclaimed_mmio_detection(struct drm_i915_private *dev_priv)
 {
-	if (unlikely(i915_modparams.mmio_debug ||
-		     dev_priv->uncore.unclaimed_mmio_check <= 0))
-		return false;
+	bool ret = false;
+
+	spin_lock_irq(&dev_priv->uncore.lock);
+
+	if (unlikely(dev_priv->uncore.unclaimed_mmio_check <= 0))
+		goto out;
 
 	if (unlikely(intel_uncore_unclaimed_mmio(dev_priv))) {
-		DRM_DEBUG("Unclaimed register detected, "
-			  "enabling oneshot unclaimed register reporting. "
-			  "Please use i915.mmio_debug=N for more information.\n");
-		i915_modparams.mmio_debug++;
+		if (!i915_modparams.mmio_debug) {
+			DRM_DEBUG("Unclaimed register detected, "
+				  "enabling oneshot unclaimed register reporting. "
+				  "Please use i915.mmio_debug=N for more information.\n");
+			i915_modparams.mmio_debug++;
+		}
 		dev_priv->uncore.unclaimed_mmio_check--;
-		return true;
+		ret = true;
 	}
 
-	return false;
+out:
+	spin_unlock_irq(&dev_priv->uncore.lock);
+
+	return ret;
 }
 
 static enum forcewake_domains

drivers/gpu/drm/i915/intel_wopcm.c

···
 	u32 guc_wopcm_rsvd;
 	int err;
 
+	if (!USES_GUC(dev_priv))
+		return 0;
+
 	GEM_BUG_ON(!wopcm->size);
+
+	if (i915_inject_load_failure())
+		return -E2BIG;
 
 	if (guc_fw_size >= wopcm->size) {
 		DRM_ERROR("GuC FW (%uKiB) is too big to fit in WOPCM.",

drivers/gpu/drm/i915/selftests/huge_pages.c

···
 	if (IS_ERR(obj))
 		return ERR_CAST(obj);
 
-	cmd = i915_gem_object_pin_map(obj, I915_MAP_WB);
+	err = i915_gem_object_set_to_wc_domain(obj, true);
+	if (err)
+		goto err;
+
+	cmd = i915_gem_object_pin_map(obj, I915_MAP_WC);
 	if (IS_ERR(cmd)) {
 		err = PTR_ERR(cmd);
 		goto err;
···
 	}
 
 	*cmd = MI_BATCH_BUFFER_END;
+	i915_gem_chipset_flush(i915);
 
 	i915_gem_object_unpin_map(obj);
-
-	err = i915_gem_object_set_to_gtt_domain(obj, false);
-	if (err)
-		goto err;
 
 	batch = i915_vma_instance(obj, vma->vm, NULL);
 	if (IS_ERR(batch)) {

drivers/gpu/drm/i915/selftests/i915_gem.c

···
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2018 Intel Corporation
+ */
+
+#include <linux/random.h>
+
+#include "../i915_selftest.h"
+
+#include "mock_context.h"
+#include "igt_flush_test.h"
+
+static int switch_to_context(struct drm_i915_private *i915,
+			     struct i915_gem_context *ctx)
+{
+	struct intel_engine_cs *engine;
+	enum intel_engine_id id;
+	int err = 0;
+
+	intel_runtime_pm_get(i915);
+
+	for_each_engine(engine, i915, id) {
+		struct i915_request *rq;
+
+		rq = i915_request_alloc(engine, ctx);
+		if (IS_ERR(rq)) {
+			err = PTR_ERR(rq);
+			break;
+		}
+
+		i915_request_add(rq);
+	}
+
+	intel_runtime_pm_put(i915);
+
+	return err;
+}
+
+static void trash_stolen(struct drm_i915_private *i915)
+{
+	struct i915_ggtt *ggtt = &i915->ggtt;
+	const u64 slot = ggtt->error_capture.start;
+	const resource_size_t size = resource_size(&i915->dsm);
+	unsigned long page;
+	u32 prng = 0x12345678;
+
+	for (page = 0; page < size; page += PAGE_SIZE) {
+		const dma_addr_t dma = i915->dsm.start + page;
+		u32 __iomem *s;
+		int x;
+
+		ggtt->vm.insert_page(&ggtt->vm, dma, slot, I915_CACHE_NONE, 0);
+
+		s = io_mapping_map_atomic_wc(&ggtt->iomap, slot);
+		for (x = 0; x < PAGE_SIZE / sizeof(u32); x++) {
+			prng = next_pseudo_random32(prng);
+			iowrite32(prng, &s[x]);
+		}
+		io_mapping_unmap_atomic(s);
+	}
+
+	ggtt->vm.clear_range(&ggtt->vm, slot, PAGE_SIZE);
+}
+
+static void simulate_hibernate(struct drm_i915_private *i915)
+{
+	intel_runtime_pm_get(i915);
+
+	/*
+	 * As a final sting in the tail, invalidate stolen. Under a real S4,
+	 * stolen is lost and needs to be refilled on resume. However, under
+	 * CI we merely do S4-device testing (as full S4 is too unreliable
+	 * for automated testing across a cluster), so to simulate the effect
+	 * of stolen being trashed across S4, we trash it ourselves.
+	 */
+	trash_stolen(i915);
+
+	intel_runtime_pm_put(i915);
+}
+
+static int pm_prepare(struct drm_i915_private *i915)
+{
+	int err = 0;
+
+	if (i915_gem_suspend(i915)) {
+		pr_err("i915_gem_suspend failed\n");
+		err = -EINVAL;
+	}
+
+	return err;
+}
+
+static void pm_suspend(struct drm_i915_private *i915)
+{
+	intel_runtime_pm_get(i915);
+
+	i915_gem_suspend_gtt_mappings(i915);
+	i915_gem_suspend_late(i915);
+
+	intel_runtime_pm_put(i915);
+}
+
+static void pm_hibernate(struct drm_i915_private *i915)
+{
+	intel_runtime_pm_get(i915);
+
+	i915_gem_suspend_gtt_mappings(i915);
+
+	i915_gem_freeze(i915);
+	i915_gem_freeze_late(i915);
+
+	intel_runtime_pm_put(i915);
+}
+
+static void pm_resume(struct drm_i915_private *i915)
+{
+	/*
+	 * Both suspend and hibernate follow the same wakeup path and assume
+	 * that runtime-pm just works.
+	 */
+	intel_runtime_pm_get(i915);
+
+	intel_engines_sanitize(i915);
+	i915_gem_sanitize(i915);
+	i915_gem_resume(i915);
+
+	intel_runtime_pm_put(i915);
+}
+
+static int igt_gem_suspend(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct i915_gem_context *ctx;
+	struct drm_file *file;
+	int err;
+
+	file = mock_file(i915);
+	if (IS_ERR(file))
+		return PTR_ERR(file);
+
+	err = -ENOMEM;
+	mutex_lock(&i915->drm.struct_mutex);
+	ctx = live_context(i915, file);
+	if (!IS_ERR(ctx))
+		err = switch_to_context(i915, ctx);
+	mutex_unlock(&i915->drm.struct_mutex);
+	if (err)
+		goto out;
+
+	err = pm_prepare(i915);
+	if (err)
+		goto out;
+
+	pm_suspend(i915);
+
+	/* Here be dragons! Note that with S3RST any S3 may become S4! */
+	simulate_hibernate(i915);
+
+	pm_resume(i915);
+
+	mutex_lock(&i915->drm.struct_mutex);
+	err = switch_to_context(i915, ctx);
+	if (igt_flush_test(i915, I915_WAIT_LOCKED))
+		err = -EIO;
+	mutex_unlock(&i915->drm.struct_mutex);
+out:
+	mock_file_free(i915, file);
+	return err;
+}
+
+static int igt_gem_hibernate(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct i915_gem_context *ctx;
+	struct drm_file *file;
+	int err;
+
+	file = mock_file(i915);
+	if (IS_ERR(file))
+		return PTR_ERR(file);
+
+	err = -ENOMEM;
+	mutex_lock(&i915->drm.struct_mutex);
+	ctx = live_context(i915, file);
+	if (!IS_ERR(ctx))
+		err = switch_to_context(i915, ctx);
+	mutex_unlock(&i915->drm.struct_mutex);
+	if (err)
+		goto out;
+
+	err = pm_prepare(i915);
+	if (err)
+		goto out;
+
+	pm_hibernate(i915);
+
+	/* Here be dragons! */
+	simulate_hibernate(i915);
+
+	pm_resume(i915);
+
+	mutex_lock(&i915->drm.struct_mutex);
+	err = switch_to_context(i915, ctx);
+	if (igt_flush_test(i915, I915_WAIT_LOCKED))
+		err = -EIO;
+	mutex_unlock(&i915->drm.struct_mutex);
+out:
+	mock_file_free(i915, file);
+	return err;
+}
+
+int i915_gem_live_selftests(struct drm_i915_private *i915)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(igt_gem_suspend),
+		SUBTEST(igt_gem_hibernate),
+	};
+
+	return i915_subtests(tests, i915);
+}

drivers/gpu/drm/i915/selftests/i915_gem_coherency.c

···
 {
 	unsigned int needs_clflush;
 	struct page *page;
-	u32 *map;
+	void *map;
+	u32 *cpu;
 	int err;
 
 	err = i915_gem_obj_prepare_shmem_write(obj, &needs_clflush);
···
 
 	page = i915_gem_object_get_page(obj, offset >> PAGE_SHIFT);
 	map = kmap_atomic(page);
+	cpu = map + offset_in_page(offset);
 
-	if (needs_clflush & CLFLUSH_BEFORE) {
-		mb();
-		clflush(map+offset_in_page(offset) / sizeof(*map));
-		mb();
-	}
+	if (needs_clflush & CLFLUSH_BEFORE)
+		drm_clflush_virt_range(cpu, sizeof(*cpu));
 
-	map[offset_in_page(offset) / sizeof(*map)] = v;
+	*cpu = v;
 
-	if (needs_clflush & CLFLUSH_AFTER) {
-		mb();
-		clflush(map+offset_in_page(offset) / sizeof(*map));
-		mb();
-	}
+	if (needs_clflush & CLFLUSH_AFTER)
+		drm_clflush_virt_range(cpu, sizeof(*cpu));
 
 	kunmap_atomic(map);
-
 	i915_gem_obj_finish_shmem_access(obj);
+
 	return 0;
 }
 
···
 {
 	unsigned int needs_clflush;
 	struct page *page;
-	u32 *map;
+	void *map;
+	u32 *cpu;
 	int err;
 
 	err = i915_gem_obj_prepare_shmem_read(obj, &needs_clflush);
···
 
 	page = i915_gem_object_get_page(obj, offset >> PAGE_SHIFT);
 	map = kmap_atomic(page);
+	cpu = map + offset_in_page(offset);
 
-	if (needs_clflush & CLFLUSH_BEFORE) {
-		mb();
-		clflush(map+offset_in_page(offset) / sizeof(*map));
-		mb();
-	}
+	if (needs_clflush & CLFLUSH_BEFORE)
+		drm_clflush_virt_range(cpu, sizeof(*cpu));
 
-	*v = map[offset_in_page(offset) / sizeof(*map)];
+	*v = *cpu;
+
 	kunmap_atomic(map);
-
 	i915_gem_obj_finish_shmem_access(obj);
+
 	return 0;
 }
 

drivers/gpu/drm/i915/selftests/i915_gem_object.c

···
 			       view.partial.offset,
 			       view.partial.size,
 			       vma->size >> PAGE_SHIFT,
-			       tile_row_pages(obj),
+			       tile->tiling ? tile_row_pages(obj) : 0,
 			       vma->fence ? vma->fence->id : -1, tile->tiling, tile->stride,
 			       offset >> PAGE_SHIFT,
 			       (unsigned int)offset_in_page(offset),

drivers/gpu/drm/i915/selftests/i915_live_selftests.h

···
 selftest(dmabuf, i915_gem_dmabuf_live_selftests)
 selftest(coherency, i915_gem_coherency_live_selftests)
 selftest(gtt, i915_gem_gtt_live_selftests)
+selftest(gem, i915_gem_live_selftests)
 selftest(evict, i915_gem_evict_live_selftests)
 selftest(hugepages, i915_gem_huge_page_live_selftests)
 selftest(contexts, i915_gem_context_live_selftests)

drivers/gpu/drm/i915/selftests/intel_guc.c

···
 	return 0;
 }
 
+static int ring_doorbell_nop(struct intel_guc_client *client)
+{
+	struct guc_process_desc *desc = __get_process_desc(client);
+	int err;
+
+	client->use_nop_wqi = true;
+
+	spin_lock_irq(&client->wq_lock);
+
+	guc_wq_item_append(client, 0, 0, 0, 0);
+	guc_ring_doorbell(client);
+
+	spin_unlock_irq(&client->wq_lock);
+
+	client->use_nop_wqi = false;
+
+	/* if there are no issues GuC will update the WQ head and keep the
+	 * WQ in active status
+	 */
+	err = wait_for(READ_ONCE(desc->head) == READ_ONCE(desc->tail), 10);
+	if (err) {
+		pr_err("doorbell %u ring failed!\n", client->doorbell_id);
+		return -EIO;
+	}
+
+	if (desc->wq_status != WQ_STATUS_ACTIVE) {
+		pr_err("doorbell %u ring put WQ in bad state (%u)!\n",
+		       client->doorbell_id, desc->wq_status);
+		return -EIO;
+	}
+
+	return 0;
+}
+
 /*
  * Basic client sanity check, handy to validate create_clients.
  */
···
 		}
 
 		err = check_all_doorbells(guc);
+		if (err)
+			goto out;
+
+		err = ring_doorbell_nop(clients[i]);
 		if (err)
 			goto out;
 	}

drivers/gpu/drm/i915/selftests/intel_hangcheck.c

···
 	return err;
 }
 
+static int evict_fence(void *data)
+{
+	struct evict_vma *arg = data;
+	struct drm_i915_private *i915 = arg->vma->vm->i915;
+	int err;
+
+	complete(&arg->completion);
+
+	mutex_lock(&i915->drm.struct_mutex);
+
+	/* Mark the fence register as dirty to force the mmio update. */
+	err = i915_gem_object_set_tiling(arg->vma->obj, I915_TILING_Y, 512);
+	if (err) {
+		pr_err("Invalid Y-tiling settings; err:%d\n", err);
+		goto out_unlock;
+	}
+
+	err = i915_vma_pin_fence(arg->vma);
+	if (err) {
+		pr_err("Unable to pin Y-tiled fence; err:%d\n", err);
+		goto out_unlock;
+	}
+
+	i915_vma_unpin_fence(arg->vma);
+
+out_unlock:
+	mutex_unlock(&i915->drm.struct_mutex);
+
+	return err;
+}
+
 static int __igt_reset_evict_vma(struct drm_i915_private *i915,
-				 struct i915_address_space *vm)
+				 struct i915_address_space *vm,
+				 int (*fn)(void *),
+				 unsigned int flags)
 {
 	struct drm_i915_gem_object *obj;
 	struct task_struct *tsk = NULL;
···
 	if (err)
 		goto unlock;
 
-	obj = i915_gem_object_create_internal(i915, PAGE_SIZE);
+	obj = i915_gem_object_create_internal(i915, SZ_1M);
 	if (IS_ERR(obj)) {
 		err = PTR_ERR(obj);
 		goto fini;
+	}
+
+	if (flags & EXEC_OBJECT_NEEDS_FENCE) {
+		err = i915_gem_object_set_tiling(obj, I915_TILING_X, 512);
+		if (err) {
+			pr_err("Invalid X-tiling settings; err:%d\n", err);
+			goto out_obj;
+		}
 	}
 
 	arg.vma = i915_vma_instance(obj, vm, NULL);
···
 	}
 
 	err = i915_vma_pin(arg.vma, 0, 0,
-			   i915_vma_is_ggtt(arg.vma) ? PIN_GLOBAL : PIN_USER);
-	if (err)
+			   i915_vma_is_ggtt(arg.vma) ?
+			   PIN_GLOBAL | PIN_MAPPABLE :
+			   PIN_USER);
+	if (err) {
+		i915_request_add(rq);
 		goto out_obj;
+	}
 
-	err = i915_vma_move_to_active(arg.vma, rq, EXEC_OBJECT_WRITE);
+	if (flags & EXEC_OBJECT_NEEDS_FENCE) {
+		err = i915_vma_pin_fence(arg.vma);
+		if (err) {
+			pr_err("Unable to pin X-tiled fence; err:%d\n", err);
+			i915_vma_unpin(arg.vma);
+			i915_request_add(rq);
+			goto out_obj;
+		}
+	}
+
+	err = i915_vma_move_to_active(arg.vma, rq, flags);
+
+	if (flags & EXEC_OBJECT_NEEDS_FENCE)
+		i915_vma_unpin_fence(arg.vma);
 	i915_vma_unpin(arg.vma);
 
 	i915_request_get(rq);
···
 
 	init_completion(&arg.completion);
 
-	tsk = kthread_run(evict_vma, &arg, "igt/evict_vma");
+	tsk = kthread_run(fn, &arg, "igt/evict_vma");
 	if (IS_ERR(tsk)) {
 		err = PTR_ERR(tsk);
 		tsk = NULL;
···
 {
 	struct drm_i915_private *i915 = arg;
 
-	return __igt_reset_evict_vma(i915, &i915->ggtt.vm);
+	return __igt_reset_evict_vma(i915, &i915->ggtt.vm,
+				     evict_vma, EXEC_OBJECT_WRITE);
 }
 
 static int igt_reset_evict_ppgtt(void *arg)
 {
 	struct drm_i915_private *i915 = arg;
 	struct i915_gem_context *ctx;
+	struct drm_file *file;
 	int err;
 
+	file = mock_file(i915);
+	if (IS_ERR(file))
+		return PTR_ERR(file);
+
 	mutex_lock(&i915->drm.struct_mutex);
-	ctx = kernel_context(i915);
+	ctx = live_context(i915, file);
 	mutex_unlock(&i915->drm.struct_mutex);
-	if (IS_ERR(ctx))
-		return PTR_ERR(ctx);
+	if (IS_ERR(ctx)) {
+		err = PTR_ERR(ctx);
+		goto out;
+	}
 
 	err = 0;
 	if (ctx->ppgtt) /* aliasing == global gtt locking, covered above */
-		err = __igt_reset_evict_vma(i915, &ctx->ppgtt->vm);
+		err = __igt_reset_evict_vma(i915, &ctx->ppgtt->vm,
+					    evict_vma, EXEC_OBJECT_WRITE);
 
-	kernel_context_close(ctx);
+out:
+	mock_file_free(i915, file);
 	return err;
+}
+
+static int igt_reset_evict_fence(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+
+	return __igt_reset_evict_vma(i915, &i915->ggtt.vm,
+				     evict_fence, EXEC_OBJECT_NEEDS_FENCE);
 }
 
 static int wait_for_others(struct drm_i915_private *i915,
···
 		SUBTEST(igt_reset_wait),
 		SUBTEST(igt_reset_evict_ggtt),
 		SUBTEST(igt_reset_evict_ppgtt),
+		SUBTEST(igt_reset_evict_fence),
 		SUBTEST(igt_handle_error),
 	};
 	bool saved_hangcheck;

drivers/gpu/drm/i915/selftests/mock_context.c

···
 
 	INIT_RADIX_TREE(&ctx->handles_vma, GFP_KERNEL);
 	INIT_LIST_HEAD(&ctx->handles_list);
+	INIT_LIST_HEAD(&ctx->hw_id_link);
 
 	for (n = 0; n < ARRAY_SIZE(ctx->__engine); n++) {
 		struct intel_context *ce = &ctx->__engine[n];
···
 		ce->gem_context = ctx;
 	}
 
-	ret = ida_simple_get(&i915->contexts.hw_ida,
-			     0, MAX_CONTEXT_HW_ID, GFP_KERNEL);
+	ret = i915_gem_context_pin_hw_id(ctx);
 	if (ret < 0)
 		goto err_handles;
-	ctx->hw_id = ret;
 
 	if (name) {
 		ctx->name = kstrdup(name, GFP_KERNEL);
···
 
 void mock_init_contexts(struct drm_i915_private *i915)
 {
-	INIT_LIST_HEAD(&i915->contexts.list);
-	ida_init(&i915->contexts.hw_ida);
-
-	INIT_WORK(&i915->contexts.free_work, contexts_free_worker);
-	init_llist_head(&i915->contexts.free_list);
+	init_contexts(i915);
 }
 
 struct i915_gem_context *

drivers/gpu/drm/i915/selftests/mock_gtt.c

···
 	ggtt->vm.vma_ops.clear_pages = clear_pages;
 
 	i915_address_space_init(&ggtt->vm, i915);
+
+	ggtt->vm.is_ggtt = true;
 }
 
 void mock_fini_ggtt(struct drm_i915_private *i915)

include/drm/i915_pciids.h

···
 	INTEL_VGA_DEVICE(0x3E91, info), /* SRV GT2 */ \
 	INTEL_VGA_DEVICE(0x3E92, info), /* SRV GT2 */ \
 	INTEL_VGA_DEVICE(0x3E96, info), /* SRV GT2 */ \
+	INTEL_VGA_DEVICE(0x3E98, info), /* SRV GT2 */ \
 	INTEL_VGA_DEVICE(0x3E9A, info)  /* SRV GT2 */
 
 /* CFL H */

include/uapi/drm/i915_drm.h

···
  */
 #define I915_PARAM_CS_TIMESTAMP_FREQUENCY 51
 
+/*
+ * Once upon a time we supposed that writes through the GGTT would be
+ * immediately in physical memory (once flushed out of the CPU path). However,
+ * on a few different processors and chipsets, this is not necessarily the case
+ * as the writes appear to be buffered internally. Thus a read of the backing
+ * storage (physical memory) via a different path (with different physical tags
+ * to the indirect write via the GGTT) will see stale values from before
+ * the GGTT write. Inside the kernel, we can for the most part keep track of
+ * the different read/write domains in use (e.g. set-domain), but the assumption
+ * of coherency is baked into the ABI, hence reporting its true state in this
+ * parameter.
+ *
+ * Reports true when writes via mmap_gtt are immediately visible following an
+ * lfence to flush the WCB.
+ *
+ * Reports false when writes via mmap_gtt are indeterminately delayed in an in
+ * internal buffer and are _not_ immediately visible to third parties accessing
+ * directly via mmap_cpu/mmap_wc. Use of mmap_gtt as part of an IPC
+ * communications channel when reporting false is strongly disadvised.
+ */
+#define I915_PARAM_MMAP_GTT_COHERENT	52
+
 typedef struct drm_i915_getparam {
 	__s32 param;
 	/*