Merge tag 'topic/drm-misc-2016-11-10' of git://anongit.freedesktop.org/drm-intel into drm-next

- better atomic state debugging from Rob
- fence prep from gustavo
- sumits flushed out his backlog of pending dma-buf/fence patches from
various people
- drm_mm leak debugging plus trying to appease Kconfig (Chris)
- a few misc things all over

* tag 'topic/drm-misc-2016-11-10' of git://anongit.freedesktop.org/drm-intel: (35 commits)
drm: Make DRM_DEBUG_MM depend on STACKTRACE_SUPPORT
drm/i915: Restrict DRM_DEBUG_MM automatic selection
drm: Restrict stackdepot usage to builtin drm.ko
drm/msm: module param to dump state on error irq
drm/msm/mdp5: add atomic_print_state support
drm/atomic: add debugfs file to dump out atomic state
drm/atomic: add new drm_debug bit to dump atomic state
drm: add helpers to go from plane state to drm_rect
drm: add helper for printing to log or seq_file
drm: helper macros to print composite types
reservation: revert "wait only with non-zero timeout specified (v3)" v2
drm/ttm: fix ttm_bo_wait
dma-buf/fence: revert "don't wait when specified timeout is zero" (v2)
dma-buf/fence: make timeout handling in fence_default_wait consistent (v2)
drm/amdgpu: add the interface of waiting multiple fences (v4)
dma-buf: return index of the first signaled fence (v2)
MAINTAINERS: update Sync File Framework files
dma-buf/sw_sync: put fence reference from the fence creation
dma-buf/sw_sync: mark sync_timeline_create() static
drm: Add stackdepot include for DRM_DEBUG_MM
...

Documentation/gpu/drm-internals.rst

···
 .. kernel-doc:: drivers/gpu/drm/drm_ioctl.c
    :export:
 
+
+Misc Utilities
+==============
+
+Printer
+-------
+
+.. kernel-doc:: include/drm/drm_print.h
+   :doc: print
+
+.. kernel-doc:: include/drm/drm_print.h
+   :internal:
+
+.. kernel-doc:: include/drm/drm_print.h
+   :export:
+
+
 Legacy Support Code
 ===================
 

MAINTAINERS

···
 S:	Maintained
 L:	[e-mail]
 L:	[e-mail]
-F:	drivers/dma-buf/sync_file.c
+F:	drivers/dma-buf/sync_*
+F:	drivers/dma-buf/sw_sync.c
 F:	include/linux/sync_file.h
+F:	include/uapi/linux/sync_file.h
 F:	Documentation/sync_file.txt
 T:	git git://git.linaro.org/people/sumitsemwal/linux-dma-buf.git
 

drivers/dma-buf/dma-fence.c

···
 	if (WARN_ON(timeout < 0))
 		return -EINVAL;
 
-	if (timeout == 0)
-		return dma_fence_is_signaled(fence);
-
 	trace_dma_fence_wait_start(fence);
 	ret = fence->ops->wait(fence, intr, timeout);
 	trace_dma_fence_wait_end(fence);
···
  * @timeout:	[in]	timeout value in jiffies, or MAX_SCHEDULE_TIMEOUT
  *
  * Returns -ERESTARTSYS if interrupted, 0 if the wait timed out, or the
- * remaining timeout in jiffies on success.
+ * remaining timeout in jiffies on success. If timeout is zero the value one is
+ * returned if the fence is already signaled for consistency with other
+ * functions taking a jiffies timeout.
  */
 signed long
 dma_fence_default_wait(struct dma_fence *fence, bool intr, signed long timeout)
 {
 	struct default_wait_cb cb;
 	unsigned long flags;
-	signed long ret = timeout;
+	signed long ret = timeout ? timeout : 1;
 	bool was_set;
 
 	if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags))
-		return timeout;
+		return ret;
 
 	spin_lock_irqsave(fence->lock, flags);
 
···
 EXPORT_SYMBOL(dma_fence_default_wait);
 
 static bool
-dma_fence_test_signaled_any(struct dma_fence **fences, uint32_t count)
+dma_fence_test_signaled_any(struct dma_fence **fences, uint32_t count,
+			    uint32_t *idx)
 {
 	int i;
 
 	for (i = 0; i < count; ++i) {
 		struct dma_fence *fence = fences[i];
-		if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags))
+		if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags)) {
+			if (idx)
+				*idx = i;
 			return true;
+		}
 	}
 	return false;
 }
···
  * @count:	[in]	number of fences to wait on
  * @intr:	[in]	if true, do an interruptible wait
  * @timeout:	[in]	timeout value in jiffies, or MAX_SCHEDULE_TIMEOUT
+ * @idx:       [out]	the first signaled fence index, meaningful only on
+ *			positive return
  *
  * Returns -EINVAL on custom fence wait implementation, -ERESTARTSYS if
  * interrupted, 0 if the wait timed out, or the remaining timeout in jiffies
···
  */
 signed long
 dma_fence_wait_any_timeout(struct dma_fence **fences, uint32_t count,
-			   bool intr, signed long timeout)
+			   bool intr, signed long timeout, uint32_t *idx)
 {
 	struct default_wait_cb *cb;
 	signed long ret = timeout;
···
 
 	if (timeout == 0) {
 		for (i = 0; i < count; ++i)
-			if (dma_fence_is_signaled(fences[i]))
+			if (dma_fence_is_signaled(fences[i])) {
+				if (idx)
+					*idx = i;
 				return 1;
+			}
 
 		return 0;
 	}
···
 		if (dma_fence_add_callback(fence, &cb[i].base,
 					   dma_fence_default_wait_cb)) {
 			/* This fence is already signaled */
+			if (idx)
+				*idx = i;
 			goto fence_rm_cb;
 		}
 	}
···
 		else
 			set_current_state(TASK_UNINTERRUPTIBLE);
 
-		if (dma_fence_test_signaled_any(fences, count))
+		if (dma_fence_test_signaled_any(fences, count, idx))
 			break;
 
 		ret = schedule_timeout(ret);

drivers/dma-buf/reservation.c

···
 {
 	struct dma_fence *fence;
 	unsigned seq, shared_count, i = 0;
-	long ret = timeout;
-
-	if (!timeout)
-		return reservation_object_test_signaled_rcu(obj, wait_all);
+	long ret = timeout ? timeout : 1;
 
 retry:
 	fence = NULL;

drivers/dma-buf/sw_sync.c

···
  * Creates a new sync_timeline. Returns the sync_timeline object or NULL in
  * case of error.
  */
-struct sync_timeline *sync_timeline_create(const char *name)
+static struct sync_timeline *sync_timeline_create(const char *name)
 {
 	struct sync_timeline *obj;
 
···
 	}
 
 	sync_file = sync_file_create(&pt->base);
+	dma_fence_put(&pt->base);
 	if (!sync_file) {
-		dma_fence_put(&pt->base);
 		err = -ENOMEM;
 		goto err;
 	}

drivers/gpu/drm/Kconfig

···
 	  read and write values to arbitrary DPCD registers on the DP aux
 	  channel.
 
+config DRM_DEBUG_MM
+	bool "Insert extra checks and debug info into the DRM range managers"
+	default n
+	depends on DRM=y
+	depends on STACKTRACE_SUPPORT
+	select STACKDEPOT
+	help
+	  Enable allocation tracking of memory manager and leak detection on
+	  shutdown.
+
+	  Recommended for driver developers only.
+
+	  If in doubt, say "N".
+
 config DRM_KMS_HELPER
 	tristate
 	depends on DRM

drivers/gpu/drm/Makefile

···
 		drm_modeset_lock.o drm_atomic.o drm_bridge.o \
 		drm_framebuffer.o drm_connector.o drm_blend.o \
 		drm_encoder.o drm_mode_object.o drm_property.o \
-		drm_plane.o drm_color_mgmt.o
+		drm_plane.o drm_color_mgmt.o drm_print.o
 
 drm-$(CONFIG_COMPAT) += drm_ioc32.o
 drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o

drivers/gpu/drm/amd/amdgpu/amdgpu.h

···
 			struct drm_file *filp);
 int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
 int amdgpu_cs_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
+int amdgpu_cs_wait_fences_ioctl(struct drm_device *dev, void *data,
+				struct drm_file *filp);
 
 int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data,
 				struct drm_file *filp);

drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c

···
 }
 
 /**
+ * amdgpu_cs_get_fence - helper to get fence from drm_amdgpu_fence
+ *
+ * @adev: amdgpu device
+ * @filp: file private
+ * @user: drm_amdgpu_fence copied from user space
+ */
+static struct dma_fence *amdgpu_cs_get_fence(struct amdgpu_device *adev,
+					     struct drm_file *filp,
+					     struct drm_amdgpu_fence *user)
+{
+	struct amdgpu_ring *ring;
+	struct amdgpu_ctx *ctx;
+	struct dma_fence *fence;
+	int r;
+
+	r = amdgpu_cs_get_ring(adev, user->ip_type, user->ip_instance,
+			       user->ring, &ring);
+	if (r)
+		return ERR_PTR(r);
+
+	ctx = amdgpu_ctx_get(filp->driver_priv, user->ctx_id);
+	if (ctx == NULL)
+		return ERR_PTR(-EINVAL);
+
+	fence = amdgpu_ctx_get_fence(ctx, ring, user->seq_no);
+	amdgpu_ctx_put(ctx);
+
+	return fence;
+}
+
+/**
+ * amdgpu_cs_wait_all_fence - wait on all fences to signal
+ *
+ * @adev: amdgpu device
+ * @filp: file private
+ * @wait: wait parameters
+ * @fences: array of drm_amdgpu_fence
+ */
+static int amdgpu_cs_wait_all_fences(struct amdgpu_device *adev,
+				     struct drm_file *filp,
+				     union drm_amdgpu_wait_fences *wait,
+				     struct drm_amdgpu_fence *fences)
+{
+	uint32_t fence_count = wait->in.fence_count;
+	unsigned int i;
+	long r = 1;
+
+	for (i = 0; i < fence_count; i++) {
+		struct dma_fence *fence;
+		unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout_ns);
+
+		fence = amdgpu_cs_get_fence(adev, filp, &fences[i]);
+		if (IS_ERR(fence))
+			return PTR_ERR(fence);
+		else if (!fence)
+			continue;
+
+		r = dma_fence_wait_timeout(fence, true, timeout);
+		if (r < 0)
+			return r;
+
+		if (r == 0)
+			break;
+	}
+
+	memset(wait, 0, sizeof(*wait));
+	wait->out.status = (r > 0);
+
+	return 0;
+}
+
+/**
+ * amdgpu_cs_wait_any_fence - wait on any fence to signal
+ *
+ * @adev: amdgpu device
+ * @filp: file private
+ * @wait: wait parameters
+ * @fences: array of drm_amdgpu_fence
+ */
+static int amdgpu_cs_wait_any_fence(struct amdgpu_device *adev,
+				    struct drm_file *filp,
+				    union drm_amdgpu_wait_fences *wait,
+				    struct drm_amdgpu_fence *fences)
+{
+	unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout_ns);
+	uint32_t fence_count = wait->in.fence_count;
+	uint32_t first = ~0;
+	struct dma_fence **array;
+	unsigned int i;
+	long r;
+
+	/* Prepare the fence array */
+	array = kcalloc(fence_count, sizeof(struct dma_fence *), GFP_KERNEL);
+
+	if (array == NULL)
+		return -ENOMEM;
+
+	for (i = 0; i < fence_count; i++) {
+		struct dma_fence *fence;
+
+		fence = amdgpu_cs_get_fence(adev, filp, &fences[i]);
+		if (IS_ERR(fence)) {
+			r = PTR_ERR(fence);
+			goto err_free_fence_array;
+		} else if (fence) {
+			array[i] = fence;
+		} else { /* NULL, the fence has been already signaled */
+			r = 1;
+			goto out;
+		}
+	}
+
+	r = dma_fence_wait_any_timeout(array, fence_count, true, timeout,
+				       &first);
+	if (r < 0)
+		goto err_free_fence_array;
+
+out:
+	memset(wait, 0, sizeof(*wait));
+	wait->out.status = (r > 0);
+	wait->out.first_signaled = first;
+	/* set return value 0 to indicate success */
+	r = 0;
+
+err_free_fence_array:
+	for (i = 0; i < fence_count; i++)
+		dma_fence_put(array[i]);
+	kfree(array);
+
+	return r;
+}
+
+/**
+ * amdgpu_cs_wait_fences_ioctl - wait for multiple command submissions to finish
+ *
+ * @dev: drm device
+ * @data: data from userspace
+ * @filp: file private
+ */
+int amdgpu_cs_wait_fences_ioctl(struct drm_device *dev, void *data,
+				struct drm_file *filp)
+{
+	struct amdgpu_device *adev = dev->dev_private;
+	union drm_amdgpu_wait_fences *wait = data;
+	uint32_t fence_count = wait->in.fence_count;
+	struct drm_amdgpu_fence *fences_user;
+	struct drm_amdgpu_fence *fences;
+	int r;
+
+	/* Get the fences from userspace */
+	fences = kmalloc_array(fence_count, sizeof(struct drm_amdgpu_fence),
+			GFP_KERNEL);
+	if (fences == NULL)
+		return -ENOMEM;
+
+	fences_user = (void __user *)(unsigned long)(wait->in.fences);
+	if (copy_from_user(fences, fences_user,
+		sizeof(struct drm_amdgpu_fence) * fence_count)) {
+		r = -EFAULT;
+		goto err_free_fences;
+	}
+
+	if (wait->in.wait_all)
+		r = amdgpu_cs_wait_all_fences(adev, filp, wait, fences);
+	else
+		r = amdgpu_cs_wait_any_fence(adev, filp, wait, fences);
+
+err_free_fences:
+	kfree(fences);
+
+	return r;
+}
+
+/**
  * amdgpu_cs_find_bo_va - find bo_va for VM address
  *
  * @parser: command submission parser context

drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c

···
 	DRM_IOCTL_DEF_DRV(AMDGPU_CS, amdgpu_cs_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF_DRV(AMDGPU_INFO, amdgpu_info_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF_DRV(AMDGPU_WAIT_CS, amdgpu_cs_wait_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(AMDGPU_WAIT_FENCES, amdgpu_cs_wait_fences_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_METADATA, amdgpu_gem_metadata_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_VA, amdgpu_gem_va_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_OP, amdgpu_gem_op_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),

drivers/gpu/drm/amd/amdgpu/amdgpu_sa.c

···
 		if (count) {
 			spin_unlock(&sa_manager->wq.lock);
 			t = dma_fence_wait_any_timeout(fences, count, false,
-						       MAX_SCHEDULE_TIMEOUT);
+						       MAX_SCHEDULE_TIMEOUT,
+						       NULL);
 			for (i = 0; i < count; ++i)
 				dma_fence_put(fences[i]);
 

drivers/gpu/drm/arc/arcpgu_drv.c

···
 	.open = drm_open,
 	.release = drm_release,
 	.unlocked_ioctl = drm_ioctl,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl = drm_compat_ioctl,
-#endif
 	.poll = drm_poll,
 	.read = drm_read,
 	.llseek = no_llseek,

drivers/gpu/drm/arm/hdlcd_drv.c

···
 	.open		= drm_open,
 	.release	= drm_release,
 	.unlocked_ioctl	= drm_ioctl,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl	= drm_compat_ioctl,
-#endif
 	.poll		= drm_poll,
 	.read		= drm_read,
 	.llseek		= noop_llseek,

drivers/gpu/drm/arm/malidp_drv.c

···
 	.open = drm_open,
 	.release = drm_release,
 	.unlocked_ioctl = drm_ioctl,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl = drm_compat_ioctl,
-#endif
 	.poll = drm_poll,
 	.read = drm_read,
 	.llseek = noop_llseek,

drivers/gpu/drm/ast/ast_drv.c

···
 	.unlocked_ioctl = drm_ioctl,
 	.mmap = ast_mmap,
 	.poll = drm_poll,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl = drm_compat_ioctl,
-#endif
 	.read = drm_read,
 };
 

drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c

···
 	.open               = drm_open,
 	.release            = drm_release,
 	.unlocked_ioctl     = drm_ioctl,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl       = drm_compat_ioctl,
-#endif
 	.poll               = drm_poll,
 	.read               = drm_read,
 	.llseek             = no_llseek,

drivers/gpu/drm/bochs/bochs_drv.c

···
 	.open		= drm_open,
 	.release	= drm_release,
 	.unlocked_ioctl	= drm_ioctl,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl	= drm_compat_ioctl,
-#endif
 	.poll		= drm_poll,
 	.read		= drm_read,
 	.llseek		= no_llseek,

drivers/gpu/drm/cirrus/cirrus_drv.c

···
 	.unlocked_ioctl = drm_ioctl,
 	.mmap = cirrus_mmap,
 	.poll = drm_poll,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl = drm_compat_ioctl,
-#endif
 };
 static struct drm_driver driver = {
 	.driver_features = DRIVER_MODESET | DRIVER_GEM,

drivers/gpu/drm/drm_atomic.c

···
 #include <drm/drm_atomic.h>
 #include <drm/drm_mode.h>
 #include <drm/drm_plane_helper.h>
+#include <drm/drm_print.h>
 
 #include "drm_crtc_internal.h"
 
···
 	return 0;
 }
 
+static void drm_atomic_crtc_print_state(struct drm_printer *p,
+		const struct drm_crtc_state *state)
+{
+	struct drm_crtc *crtc = state->crtc;
+
+	drm_printf(p, "crtc[%u]: %s\n", crtc->base.id, crtc->name);
+	drm_printf(p, "\tenable=%d\n", state->enable);
+	drm_printf(p, "\tactive=%d\n", state->active);
+	drm_printf(p, "\tplanes_changed=%d\n", state->planes_changed);
+	drm_printf(p, "\tmode_changed=%d\n", state->mode_changed);
+	drm_printf(p, "\tactive_changed=%d\n", state->active_changed);
+	drm_printf(p, "\tconnectors_changed=%d\n", state->connectors_changed);
+	drm_printf(p, "\tcolor_mgmt_changed=%d\n", state->color_mgmt_changed);
+	drm_printf(p, "\tplane_mask=%x\n", state->plane_mask);
+	drm_printf(p, "\tconnector_mask=%x\n", state->connector_mask);
+	drm_printf(p, "\tencoder_mask=%x\n", state->encoder_mask);
+	drm_printf(p, "\tmode: " DRM_MODE_FMT "\n", DRM_MODE_ARG(&state->mode));
+
+	if (crtc->funcs->atomic_print_state)
+		crtc->funcs->atomic_print_state(p, state);
+}
+
 /**
  * drm_atomic_get_plane_state - get plane state
  * @state: global atomic state object
···
 	return 0;
 }
 
+static void drm_atomic_plane_print_state(struct drm_printer *p,
+		const struct drm_plane_state *state)
+{
+	struct drm_plane *plane = state->plane;
+	struct drm_rect src  = drm_plane_state_src(state);
+	struct drm_rect dest = drm_plane_state_dest(state);
+
+	drm_printf(p, "plane[%u]: %s\n", plane->base.id, plane->name);
+	drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)");
+	drm_printf(p, "\tfb=%u\n", state->fb ? state->fb->base.id : 0);
+	if (state->fb) {
+		struct drm_framebuffer *fb = state->fb;
+		int i, n = drm_format_num_planes(fb->pixel_format);
+
+		drm_printf(p, "\t\tformat=%s\n",
+				drm_get_format_name(fb->pixel_format));
+		drm_printf(p, "\t\tsize=%dx%d\n", fb->width, fb->height);
+		drm_printf(p, "\t\tlayers:\n");
+		for (i = 0; i < n; i++) {
+			drm_printf(p, "\t\t\tpitch[%d]=%u\n", i, fb->pitches[i]);
+			drm_printf(p, "\t\t\toffset[%d]=%u\n", i, fb->offsets[i]);
+			drm_printf(p, "\t\t\tmodifier[%d]=0x%llx\n", i, fb->modifier[i]);
+		}
+	}
+	drm_printf(p, "\tcrtc-pos=" DRM_RECT_FMT "\n", DRM_RECT_ARG(&dest));
+	drm_printf(p, "\tsrc-pos=" DRM_RECT_FP_FMT "\n", DRM_RECT_FP_ARG(&src));
+	drm_printf(p, "\trotation=%x\n", state->rotation);
+
+	if (plane->funcs->atomic_print_state)
+		plane->funcs->atomic_print_state(p, state);
+}
+
 /**
  * drm_atomic_get_connector_state - get connector state
  * @state: global atomic state object
···
 	}
 }
 EXPORT_SYMBOL(drm_atomic_connector_set_property);
+
+static void drm_atomic_connector_print_state(struct drm_printer *p,
+		const struct drm_connector_state *state)
+{
+	struct drm_connector *connector = state->connector;
+
+	drm_printf(p, "connector[%u]: %s\n", connector->base.id, connector->name);
+	drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)");
+
+	if (connector->funcs->atomic_print_state)
+		connector->funcs->atomic_print_state(p, state);
+}
 
 /**
  * drm_atomic_connector_get_property - get property value from connector state
···
 				 plane_state);
 }
 EXPORT_SYMBOL(drm_atomic_set_fb_for_plane);
+
+/**
+ * drm_atomic_set_fence_for_plane - set fence for plane
+ * @plane_state: atomic state object for the plane
+ * @fence: dma_fence to use for the plane
+ *
+ * Helper to setup the plane_state fence in case it is not set yet.
+ * By using this drivers doesn't need to worry if the user choose
+ * implicit or explicit fencing.
+ *
+ * This function will not set the fence to the state if it was set
+ * via explicit fencing interfaces on the atomic ioctl. It will
+ * all drope the reference to the fence as we not storing it
+ * anywhere.
+ *
+ * Otherwise, if plane_state->fence is not set this function we
+ * just set it with the received implict fence.
+ */
+void
+drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state,
+			       struct dma_fence *fence)
+{
+	if (plane_state->fence) {
+		dma_fence_put(fence);
+		return;
+	}
+
+	plane_state->fence = fence;
+}
+EXPORT_SYMBOL(drm_atomic_set_fence_for_plane);
 
 /**
  * drm_atomic_set_crtc_for_connector - set crtc for connector
···
 }
 EXPORT_SYMBOL(drm_atomic_nonblocking_commit);
 
+static void drm_atomic_print_state(const struct drm_atomic_state *state)
+{
+	struct drm_printer p = drm_info_printer(state->dev->dev);
+	struct drm_plane *plane;
+	struct drm_plane_state *plane_state;
+	struct drm_crtc *crtc;
+	struct drm_crtc_state *crtc_state;
+	struct drm_connector *connector;
+	struct drm_connector_state *connector_state;
+	int i;
+
+	DRM_DEBUG_ATOMIC("checking %p\n", state);
+
+	for_each_plane_in_state(state, plane, plane_state, i)
+		drm_atomic_plane_print_state(&p, plane_state);
+
+	for_each_crtc_in_state(state, crtc, crtc_state, i)
+		drm_atomic_crtc_print_state(&p, crtc_state);
+
+	for_each_connector_in_state(state, connector, connector_state, i)
+		drm_atomic_connector_print_state(&p, connector_state);
+}
+
+/**
+ * drm_state_dump - dump entire device atomic state
+ * @dev: the drm device
+ * @p: where to print the state to
+ *
+ * Just for debugging.  Drivers might want an option to dump state
+ * to dmesg in case of error irq's.  (Hint, you probably want to
+ * ratelimit this!)
+ *
+ * The caller must drm_modeset_lock_all(), or if this is called
+ * from error irq handler, it should not be enabled by default.
+ * (Ie. if you are debugging errors you might not care that this
+ * is racey.  But calling this without all modeset locks held is
+ * not inherently safe.)
+ */
+void drm_state_dump(struct drm_device *dev, struct drm_printer *p)
+{
+	struct drm_mode_config *config = &dev->mode_config;
+	struct drm_plane *plane;
+	struct drm_crtc *crtc;
+	struct drm_connector *connector;
+
+	if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
+		return;
+
+	list_for_each_entry(plane, &config->plane_list, head)
+		drm_atomic_plane_print_state(p, plane->state);
+
+	list_for_each_entry(crtc, &config->crtc_list, head)
+		drm_atomic_crtc_print_state(p, crtc->state);
+
+	list_for_each_entry(connector, &config->connector_list, head)
+		drm_atomic_connector_print_state(p, connector->state);
+}
+EXPORT_SYMBOL(drm_state_dump);
+
+#ifdef CONFIG_DEBUG_FS
+static int drm_state_info(struct seq_file *m, void *data)
+{
+	struct drm_info_node *node = (struct drm_info_node *) m->private;
+	struct drm_device *dev = node->minor->dev;
+	struct drm_printer p = drm_seq_file_printer(m);
+
+	drm_modeset_lock_all(dev);
+	drm_state_dump(dev, &p);
+	drm_modeset_unlock_all(dev);
+
+	return 0;
+}
+
+/* any use in debugfs files to dump individual planes/crtc/etc? */
+static const struct drm_info_list drm_atomic_debugfs_list[] = {
+	{"state", drm_state_info, 0},
+};
+
+int drm_atomic_debugfs_init(struct drm_minor *minor)
+{
+	return drm_debugfs_create_files(drm_atomic_debugfs_list,
+			ARRAY_SIZE(drm_atomic_debugfs_list),
+			minor->debugfs_root, minor);
+}
+#endif
+
 /*
  * The big monstor ioctl
  */
···
 	} else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) {
 		ret = drm_atomic_nonblocking_commit(state);
 	} else {
+		if (unlikely(drm_debug & DRM_UT_STATE))
+			drm_atomic_print_state(state);
+
 		ret = drm_atomic_commit(state);
 	}
 

drivers/gpu/drm/drm_crtc.c

···
 
 	crtc->primary = primary;
 	crtc->cursor = cursor;
-	if (primary)
+	if (primary && !primary->possible_crtcs)
 		primary->possible_crtcs = 1 << drm_crtc_index(crtc);
-	if (cursor)
+	if (cursor && !cursor->possible_crtcs)
 		cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
 
 	ret = drm_crtc_crc_init(crtc);

drivers/gpu/drm/drm_debugfs.c

···
 #include <linux/export.h>
 #include <drm/drmP.h>
 #include <drm/drm_edid.h>
+#include <drm/drm_atomic.h>
 #include "drm_internal.h"
 
 #if defined(CONFIG_DEBUG_FS)
···
 		minor->debugfs_root = NULL;
 		DRM_ERROR("Failed to create core drm debugfs files\n");
 		return ret;
+	}
+
+	if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
+		ret = drm_atomic_debugfs_init(minor);
+		if (ret) {
+			DRM_ERROR("Failed to create atomic debugfs files\n");
+			return ret;
+		}
 	}
 
 	if (dev->driver->debugfs_init) {

drivers/gpu/drm/drm_edid.c

···
 		   798, 858, 0, 480, 489, 495, 525, 0,
 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
 	  .vrefresh = 240, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },
-	/* 58 - 720(1440)x480i@240 */
+	/* 58 - 720(1440)x480i@240Hz */
 	{ DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 54000, 720, 739,
 		   801, 858, 0, 480, 488, 494, 525, 0,
 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
 			DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_DBLCLK),
 	  .vrefresh = 240, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3, },
-	/* 59 - 720(1440)x480i@240 */
+	/* 59 - 720(1440)x480i@240Hz */
 	{ DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 54000, 720, 739,
 		   801, 858, 0, 480, 488, 494, 525, 0,
 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |

drivers/gpu/drm/drm_fops.c

···
  * Drivers must define the file operations structure that forms the DRM
  * userspace API entry point, even though most of those operations are
  * implemented in the DRM core. The mandatory functions are drm_open(),
- * drm_read(), drm_ioctl() and drm_compat_ioctl if CONFIG_COMPAT is enabled.
- * Drivers which implement private ioctls that require 32/64 bit compatibility
- * support must provided their onw .compat_ioctl() handler that processes
- * private ioctls and calls drm_compat_ioctl() for core ioctls.
+ * drm_read(), drm_ioctl() and drm_compat_ioctl() if CONFIG_COMPAT is enabled
+ * (note that drm_compat_ioctl will be NULL if CONFIG_COMPAT=n). Drivers which
+ * implement private ioctls that require 32/64 bit compatibility support must
+ * provide their own .compat_ioctl() handler that processes private ioctls and
+ * calls drm_compat_ioctl() for core ioctls.
  *
  * In addition drm_read() and drm_poll() provide support for DRM events. DRM
  * events are a generic and extensible means to send asynchronous events to
···
  *             .open = drm_open,
  *             .release = drm_release,
  *             .unlocked_ioctl = drm_ioctl,
- *     #ifdef CONFIG_COMPAT
- *             .compat_ioctl = drm_compat_ioctl,
- *     #endif
+ *             .compat_ioctl = drm_compat_ioctl, // NULL if CONFIG_COMPAT=n
  *             .poll = drm_poll,
  *             .read = drm_read,
  *             .llseek = no_llseek,

drivers/gpu/drm/drm_framebuffer.c

···
  * those used for fbdev. Note that the caller must hold a reference of it's own,
  * i.e. the object may not be destroyed through this call (since it'll lead to a
  * locking inversion).
+ *
+ * NOTE: This function is deprecated. For driver-private framebuffers it is not
+ * recommended to embed a framebuffer struct info fbdev struct, instead, a
+ * framebuffer pointer is preferred and drm_framebuffer_unreference() should be
+ * called when the framebuffer is to be cleaned up.
  */
 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
 {

drivers/gpu/drm/drm_mm.c

···
 						u64 end,
 						enum drm_mm_search_flags flags);
 
+#ifdef CONFIG_DRM_DEBUG_MM
+#include <linux/stackdepot.h>
+
+#define STACKDEPTH 32
+#define BUFSZ 4096
+
+static noinline void save_stack(struct drm_mm_node *node)
+{
+	unsigned long entries[STACKDEPTH];
+	struct stack_trace trace = {
+		.entries = entries,
+		.max_entries = STACKDEPTH,
+		.skip = 1
+	};
+
+	save_stack_trace(&trace);
+	if (trace.nr_entries != 0 &&
+	    trace.entries[trace.nr_entries-1] == ULONG_MAX)
+		trace.nr_entries--;
+
+	/* May be called under spinlock, so avoid sleeping */
+	node->stack = depot_save_stack(&trace, GFP_NOWAIT);
+}
+
+static void show_leaks(struct drm_mm *mm)
+{
+	struct drm_mm_node *node;
+	unsigned long entries[STACKDEPTH];
+	char *buf;
+
+	buf = kmalloc(BUFSZ, GFP_KERNEL);
+	if (!buf)
+		return;
+
+	list_for_each_entry(node, &mm->head_node.node_list, node_list) {
+		struct stack_trace trace = {
+			.entries = entries,
+			.max_entries = STACKDEPTH
+		};
+
+		if (!node->stack) {
+			DRM_ERROR("node [%08llx + %08llx]: unknown owner\n",
+				  node->start, node->size);
+			continue;
+		}
+
+		depot_fetch_stack(node->stack, &trace);
+		snprint_stack_trace(buf, BUFSZ, &trace, 0);
+		DRM_ERROR("node [%08llx + %08llx]: inserted at\n%s",
+			  node->start, node->size, buf);
+	}
+
+	kfree(buf);
+}
+
+#undef STACKDEPTH
+#undef BUFSZ
+#else
+static void save_stack(struct drm_mm_node *node) { }
+static void show_leaks(struct drm_mm *mm) { }
+#endif
+
 #define START(node) ((node)->start)
 #define LAST(node)  ((node)->start + (node)->size - 1)
 
···
 		list_add(&node->hole_stack, &mm->hole_stack);
 		node->hole_follows = 1;
 	}
+
+	save_stack(node);
 }
 
 /**
···
 		list_add(&node->hole_stack, &mm->hole_stack);
 		node->hole_follows = 1;
 	}
+
+	save_stack(node);
 
 	return 0;
 }
···
 		list_add(&node->hole_stack, &mm->hole_stack);
 		node->hole_follows = 1;
 	}
+
+	save_stack(node);
 }
 
 /**
···
  * Note that it is a bug to call this function on an allocator which is not
  * clean.
  */
-void drm_mm_takedown(struct drm_mm * mm)
+void drm_mm_takedown(struct drm_mm *mm)
 {
-	WARN(!list_empty(&mm->head_node.node_list),
-	     "Memory manager not clean during takedown.\n");
+	if (WARN(!list_empty(&mm->head_node.node_list),
+		 "Memory manager not clean during takedown.\n"))
+		show_leaks(mm);
+
 }
 EXPORT_SYMBOL(drm_mm_takedown);
 

drivers/gpu/drm/drm_modes.c

···
  */
 void drm_mode_debug_printmodeline(const struct drm_display_mode *mode)
 {
-	DRM_DEBUG_KMS("Modeline %d:\"%s\" %d %d %d %d %d %d %d %d %d %d "
-			"0x%x 0x%x\n",
-		mode->base.id, mode->name, mode->vrefresh, mode->clock,
-		mode->hdisplay, mode->hsync_start,
-		mode->hsync_end, mode->htotal,
-		mode->vdisplay, mode->vsync_start,
-		mode->vsync_end, mode->vtotal, mode->type, mode->flags);
+	DRM_DEBUG_KMS("Modeline " DRM_MODE_FMT "\n", DRM_MODE_ARG(mode));
 }
 EXPORT_SYMBOL(drm_mode_debug_printmodeline);
 

drivers/gpu/drm/drm_plane_helper.c

···
 	unsigned int rotation = state->rotation;
 	int hscale, vscale;
 
-	src->x1 = state->src_x;
-	src->y1 = state->src_y;
-	src->x2 = state->src_x + state->src_w;
-	src->y2 = state->src_y + state->src_h;
-
-	dst->x1 = state->crtc_x;
-	dst->y1 = state->crtc_y;
-	dst->x2 = state->crtc_x + state->crtc_w;
-	dst->y2 = state->crtc_y + state->crtc_h;
+	*src = drm_plane_state_src(state);
+	*dst = drm_plane_state_dest(state);
 
 	if (!fb) {
 		state->visible = false;

drivers/gpu/drm/drm_print.c

···
+/*
+ * Copyright (C) 2016 Red Hat
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Rob Clark <[e-mail]>
+ */
+
+#include <stdarg.h>
+#include <linux/seq_file.h>
+#include <drm/drmP.h>
+#include <drm/drm_print.h>
+
+void __drm_printfn_seq_file(struct drm_printer *p, struct va_format *vaf)
+{
+	seq_printf(p->arg, "%pV", vaf);
+}
+EXPORT_SYMBOL(__drm_printfn_seq_file);
+
+void __drm_printfn_info(struct drm_printer *p, struct va_format *vaf)
+{
+	dev_printk(KERN_INFO, p->arg, "[" DRM_NAME "] %pV", vaf);
+}
+EXPORT_SYMBOL(__drm_printfn_info);
+
+void drm_printf(struct drm_printer *p, const char *f, ...)
+{
+	struct va_format vaf;
+	va_list args;
+
+	va_start(args, f);
+	vaf.fmt = f;
+	vaf.va = &args;
+	p->printfn(p, &vaf);
+	va_end(args);
+}
+EXPORT_SYMBOL(drm_printf);

drivers/gpu/drm/drm_rect.c

···
  */
 void drm_rect_debug_print(const char *prefix, const struct drm_rect *r, bool fixed_point)
 {
-	int w = drm_rect_width(r);
-	int h = drm_rect_height(r);
-
 	if (fixed_point)
-		DRM_DEBUG_KMS("%s%d.%06ux%d.%06u%+d.%06u%+d.%06u\n", prefix,
-			      w >> 16, ((w & 0xffff) * 15625) >> 10,
-			      h >> 16, ((h & 0xffff) * 15625) >> 10,
-			      r->x1 >> 16, ((r->x1 & 0xffff) * 15625) >> 10,
-			      r->y1 >> 16, ((r->y1 & 0xffff) * 15625) >> 10);
+		DRM_DEBUG_KMS("%s" DRM_RECT_FP_FMT "\n", prefix, DRM_RECT_FP_ARG(r));
 	else
-		DRM_DEBUG_KMS("%s%dx%d%+d%+d\n", prefix, w, h, r->x1, r->y1);
+		DRM_DEBUG_KMS("%s" DRM_RECT_FMT "\n", prefix, DRM_RECT_ARG(r));
 }
 EXPORT_SYMBOL(drm_rect_debug_print);
 

drivers/gpu/drm/etnaviv/etnaviv_drv.c

···
 	.open               = drm_open,
 	.release            = drm_release,
 	.unlocked_ioctl     = drm_ioctl,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl       = drm_compat_ioctl,
-#endif
 	.poll               = drm_poll,
 	.read               = drm_read,
 	.llseek             = no_llseek,

drivers/gpu/drm/exynos/exynos_drm_drv.c

···
 	.poll		= drm_poll,
 	.read		= drm_read,
 	.unlocked_ioctl	= drm_ioctl,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl = drm_compat_ioctl,
-#endif
 	.release	= drm_release,
 };
 

drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c

···
 	.open		= drm_open,
 	.release	= drm_release,
 	.unlocked_ioctl	= drm_ioctl,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl	= drm_compat_ioctl,
-#endif
 	.poll		= drm_poll,
 	.read		= drm_read,
 	.llseek		= no_llseek,

drivers/gpu/drm/gma500/gtt.c

···
  *	page table entries with the dummy page. This is protected via the gtt
  *	mutex which the caller must hold.
  */
-void psb_gtt_remove(struct drm_device *dev, struct gtt_range *r)
+static void psb_gtt_remove(struct drm_device *dev, struct gtt_range *r)
 {
 	struct drm_psb_private *dev_priv = dev->dev_private;
 	u32 __iomem *gtt_slot;

drivers/gpu/drm/gma500/psb_drv.c

···
 	.open = drm_open,
 	.release = drm_release,
 	.unlocked_ioctl = psb_unlocked_ioctl,
+	.compat_ioctl = drm_compat_ioctl,
 	.mmap = drm_gem_mmap,
 	.poll = drm_poll,
 	.read = drm_read,

drivers/gpu/drm/gma500/psb_drv.h

···
 extern int psb_gem_dumb_map_gtt(struct drm_file *file, struct drm_device *dev,
 			uint32_t handle, uint64_t *offset);
 extern int psb_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
-extern int psb_gem_create_ioctl(struct drm_device *dev, void *data,
-			struct drm_file *file);
-extern int psb_gem_mmap_ioctl(struct drm_device *dev, void *data,
-					struct drm_file *file);
 
 /* psb_device.c */
 extern const struct psb_ops psb_chip_ops;

drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c

···
 	.open		= drm_open,
 	.release	= drm_release,
 	.unlocked_ioctl	= drm_ioctl,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl	= drm_compat_ioctl,
-#endif
 	.poll		= drm_poll,
 	.read		= drm_read,
 	.llseek		= no_llseek,

drivers/gpu/drm/i810/i810_dma.c

···
 	.release = drm_release,
 	.unlocked_ioctl = drm_ioctl,
 	.mmap = i810_mmap_buffers,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl = drm_compat_ioctl,
-#endif
 	.llseek = noop_llseek,
 };
 

drivers/gpu/drm/i810/i810_drv.c

···
 	.unlocked_ioctl = drm_ioctl,
 	.mmap = drm_legacy_mmap,
 	.poll = drm_poll,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl = drm_compat_ioctl,
-#endif
 	.llseek = noop_llseek,
 };
 

drivers/gpu/drm/i915/Kconfig.debug

···
         select PREEMPT_COUNT
         select X86_MSR # used by igt/pm_rpm
         select DRM_VGEM # used by igt/prime_vgem (dmabuf interop checks)
+        select DRM_DEBUG_MM if DRM=y
         default n
         help
           Choose this option to turn on extra driver debugging that may affect

drivers/gpu/drm/i915/i915_drv.c

···
 	.mmap = drm_gem_mmap,
 	.poll = drm_poll,
 	.read = drm_read,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl = i915_compat_ioctl,
-#endif
 	.llseek = noop_llseek,
 };
 

drivers/gpu/drm/i915/i915_drv.h

···
 #ifdef CONFIG_COMPAT
 extern long i915_compat_ioctl(struct file *filp, unsigned int cmd,
 			      unsigned long arg);
+#else
+#define i915_compat_ioctl NULL
 #endif
 extern const struct dev_pm_ops i915_pm_ops;
 

drivers/gpu/drm/i915/intel_display.c

···
 	plane_state->crtc_w = fb->width;
 	plane_state->crtc_h = fb->height;
 
-	intel_state->base.src.x1 = plane_state->src_x;
-	intel_state->base.src.y1 = plane_state->src_y;
-	intel_state->base.src.x2 = plane_state->src_x + plane_state->src_w;
-	intel_state->base.src.y2 = plane_state->src_y + plane_state->src_h;
-	intel_state->base.dst.x1 = plane_state->crtc_x;
-	intel_state->base.dst.y1 = plane_state->crtc_y;
-	intel_state->base.dst.x2 = plane_state->crtc_x + plane_state->crtc_w;
-	intel_state->base.dst.y2 = plane_state->crtc_y + plane_state->crtc_h;
+	intel_state->base.src = drm_plane_state_src(plane_state);
+	intel_state->base.dst = drm_plane_state_dest(plane_state);
 
 	obj = intel_fb_obj(fb);
 	if (i915_gem_object_is_tiled(obj))

drivers/gpu/drm/i915/intel_sprite.c

···
 	bool can_scale;
 	int ret;
 
-	src->x1 = state->base.src_x;
-	src->y1 = state->base.src_y;
-	src->x2 = state->base.src_x + state->base.src_w;
-	src->y2 = state->base.src_y + state->base.src_h;
-
-	dst->x1 = state->base.crtc_x;
-	dst->y1 = state->base.crtc_y;
-	dst->x2 = state->base.crtc_x + state->base.crtc_w;
-	dst->y2 = state->base.crtc_y + state->base.crtc_h;
+	*src = drm_plane_state_src(&state->base);
+	*dst = drm_plane_state_dest(&state->base);
 
 	if (!fb) {
 		state->base.visible = false;

drivers/gpu/drm/imx/imx-drm-core.c

···
 	struct drm_plane_state *plane_state;
 	struct drm_plane *plane;
 	struct dma_buf *dma_buf;
+	struct dma_fence *fence;
 	int i;
 
 	/*
···
 							 0)->base.dma_buf;
 			if (!dma_buf)
 				continue;
-			plane_state->fence =
-				reservation_object_get_excl_rcu(dma_buf->resv);
+			fence = reservation_object_get_excl_rcu(dma_buf->resv);
+
+			drm_atomic_set_fence_for_plane(plane_state, fence);
 		}
 	}
 

drivers/gpu/drm/mediatek/mtk_drm_drv.c

···
 	.mmap = mtk_drm_gem_mmap,
 	.poll = drm_poll,
 	.read = drm_read,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl = drm_compat_ioctl,
-#endif
 };
 
 static struct drm_driver mtk_drm_driver = {

drivers/gpu/drm/mgag200/mgag200_drv.c

···
 	.unlocked_ioctl = drm_ioctl,
 	.mmap = mgag200_mmap,
 	.poll = drm_poll,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl = drm_compat_ioctl,
-#endif
 	.read = drm_read,
 };
 

drivers/gpu/drm/msm/mdp/mdp4/mdp4_irq.c

···
  * this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <drm/drm_print.h>
 
 #include "msm_drv.h"
 #include "mdp4_kms.h"
···
 
 static void mdp4_irq_error_handler(struct mdp_irq *irq, uint32_t irqstatus)
 {
+	struct mdp4_kms *mdp4_kms = container_of(irq, struct mdp4_kms, error_handler);
+	static DEFINE_RATELIMIT_STATE(rs, 5*HZ, 1);
+	extern bool dumpstate;
+
 	DRM_ERROR_RATELIMITED("errors: %08x\n", irqstatus);
+
+	if (dumpstate && __ratelimit(&rs)) {
+		struct drm_printer p = drm_info_printer(mdp4_kms->dev->dev);
+		drm_state_dump(mdp4_kms->dev, &p);
+	}
 }
 
 void mdp4_irq_preinstall(struct msm_kms *kms)

drivers/gpu/drm/msm/mdp/mdp5/mdp5_irq.c

···
 
 #include <linux/irq.h>
 
+#include <drm/drm_print.h>
+
 #include "msm_drv.h"
 #include "mdp5_kms.h"
 
···
 
 static void mdp5_irq_error_handler(struct mdp_irq *irq, uint32_t irqstatus)
 {
+	struct mdp5_kms *mdp5_kms = container_of(irq, struct mdp5_kms, error_handler);
+	static DEFINE_RATELIMIT_STATE(rs, 5*HZ, 1);
+	extern bool dumpstate;
+
 	DRM_ERROR_RATELIMITED("errors: %08x\n", irqstatus);
+
+	if (dumpstate && __ratelimit(&rs)) {
+		struct drm_printer p = drm_info_printer(mdp5_kms->dev->dev);
+		drm_state_dump(mdp5_kms->dev, &p);
+	}
 }
 
 void mdp5_irq_preinstall(struct msm_kms *kms)

drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h

···
 	return msm_readl(mdp5_kms->mmio + reg);
 }
 
+static inline const char *stage2name(enum mdp_mixer_stage_id stage)
+{
+	static const char *names[] = {
+#define NAME(n) [n] = #n
+		NAME(STAGE_UNUSED), NAME(STAGE_BASE),
+		NAME(STAGE0), NAME(STAGE1), NAME(STAGE2),
+		NAME(STAGE3), NAME(STAGE4), NAME(STAGE6),
+#undef NAME
+	};
+	return names[stage];
+}
+
 static inline const char *pipe2name(enum mdp5_pipe pipe)
 {
 	static const char *names[] = {

drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c

···
  * this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <drm/drm_print.h>
 #include "mdp5_kms.h"
 
 struct mdp5_plane {
···
 #undef SET_PROPERTY
 }
 
+static void
+mdp5_plane_atomic_print_state(struct drm_printer *p,
+		const struct drm_plane_state *state)
+{
+	struct mdp5_plane_state *pstate = to_mdp5_plane_state(state);
+
+	drm_printf(p, "\tpremultiplied=%u\n", pstate->premultiplied);
+	drm_printf(p, "\tzpos=%u\n", pstate->zpos);
+	drm_printf(p, "\talpha=%u\n", pstate->alpha);
+	drm_printf(p, "\tstage=%s\n", stage2name(pstate->stage));
+	drm_printf(p, "\tmode_changed=%u\n", pstate->mode_changed);
+	drm_printf(p, "\tpending=%u\n", pstate->pending);
+}
+
 static void mdp5_plane_reset(struct drm_plane *plane)
 {
 	struct mdp5_plane_state *mdp5_state;
···
 		.reset = mdp5_plane_reset,
 		.atomic_duplicate_state = mdp5_plane_duplicate_state,
 		.atomic_destroy_state = mdp5_plane_destroy_state,
+		.atomic_print_state = mdp5_plane_atomic_print_state,
 };
 
 static int mdp5_plane_prepare_fb(struct drm_plane *plane,
···
 	type = private_plane ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
 	ret = drm_universal_plane_init(dev, plane, 0xff, &mdp5_plane_funcs,
 				 mdp5_plane->formats, mdp5_plane->nformats,
-				 type, NULL);
+				 type, "%s", mdp5_plane->name);
 	if (ret)
 		goto fail;
 

drivers/gpu/drm/msm/msm_atomic.c

···
 		if ((plane->state->fb != plane_state->fb) && plane_state->fb) {
 			struct drm_gem_object *obj = msm_framebuffer_bo(plane_state->fb, 0);
 			struct msm_gem_object *msm_obj = to_msm_bo(obj);
+			struct dma_fence *fence = reservation_object_get_excl_rcu(msm_obj->resv);
 
-			plane_state->fence = reservation_object_get_excl_rcu(msm_obj->resv);
+			drm_atomic_set_fence_for_plane(plane_state, fence);
 		}
 	}
 

drivers/gpu/drm/msm/msm_drv.c

···
 MODULE_PARM_DESC(vram, "Configure VRAM size (for devices without IOMMU/GPUMMU)");
 module_param(vram, charp, 0);
 
+bool dumpstate = false;
+MODULE_PARM_DESC(dumpstate, "Dump KMS state on errors");
+module_param(dumpstate, bool, 0600);
+
 /*
  * Util/helpers:
  */
···
 	.open               = drm_open,
 	.release            = drm_release,
 	.unlocked_ioctl     = drm_ioctl,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl       = drm_compat_ioctl,
-#endif
 	.poll               = drm_poll,
 	.read               = drm_read,
 	.llseek             = no_llseek,

drivers/gpu/drm/rcar-du/rcar_du_drv.c

···
 	.open		= drm_open,
 	.release	= drm_release,
 	.unlocked_ioctl	= drm_ioctl,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl	= drm_compat_ioctl,
-#endif
 	.poll		= drm_poll,
 	.read		= drm_read,
 	.llseek		= no_llseek,

drivers/gpu/drm/rockchip/rockchip_drm_drv.c

···
 	.poll = drm_poll,
 	.read = drm_read,
 	.unlocked_ioctl = drm_ioctl,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl = drm_compat_ioctl,
-#endif
 	.release = drm_release,
 };
 

drivers/gpu/drm/savage/savage_drv.c

···
 	.unlocked_ioctl = drm_ioctl,
 	.mmap = drm_legacy_mmap,
 	.poll = drm_poll,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl = drm_compat_ioctl,
-#endif
 	.llseek = noop_llseek,
 };
 

drivers/gpu/drm/shmobile/shmob_drm_drv.c

···
 	.open		= drm_open,
 	.release	= drm_release,
 	.unlocked_ioctl	= drm_ioctl,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl	= drm_compat_ioctl,
-#endif
 	.poll		= drm_poll,
 	.read		= drm_read,
 	.llseek		= no_llseek,

drivers/gpu/drm/sis/sis_drv.c

···
 	.unlocked_ioctl = drm_ioctl,
 	.mmap = drm_legacy_mmap,
 	.poll = drm_poll,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl = drm_compat_ioctl,
-#endif
 	.llseek = noop_llseek,
 };
 

drivers/gpu/drm/sti/sti_drv.c

···
 	.poll = drm_poll,
 	.read = drm_read,
 	.unlocked_ioctl = drm_ioctl,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl = drm_compat_ioctl,
-#endif
 	.release = drm_release,
 };
 

drivers/gpu/drm/sun4i/sun4i_drv.c

···
 	.open		= drm_open,
 	.release	= drm_release,
 	.unlocked_ioctl	= drm_ioctl,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl	= drm_compat_ioctl,
-#endif
 	.poll		= drm_poll,
 	.read		= drm_read,
 	.llseek		= no_llseek,

drivers/gpu/drm/tdfx/tdfx_drv.c

···
 	.unlocked_ioctl = drm_ioctl,
 	.mmap = drm_legacy_mmap,
 	.poll = drm_poll,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl = drm_compat_ioctl,
-#endif
 	.llseek = noop_llseek,
 };
 

drivers/gpu/drm/tegra/drm.c

···
 	.mmap = tegra_drm_mmap,
 	.poll = drm_poll,
 	.read = drm_read,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl = drm_compat_ioctl,
-#endif
 	.llseek = noop_llseek,
 };
 

drivers/gpu/drm/tilcdc/tilcdc_drv.c

···
 	.open               = drm_open,
 	.release            = drm_release,
 	.unlocked_ioctl     = drm_ioctl,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl       = drm_compat_ioctl,
-#endif
 	.poll               = drm_poll,
 	.read               = drm_read,
 	.llseek             = no_llseek,

drivers/gpu/drm/ttm/ttm_bo.c

···
 int ttm_bo_wait(struct ttm_buffer_object *bo,
 		bool interruptible, bool no_wait)
 {
-	long timeout = no_wait ? 0 : 15 * HZ;
+	long timeout = 15 * HZ;
+
+	if (no_wait) {
+		if (reservation_object_test_signaled_rcu(bo->resv, true))
+			return 0;
+		else
+			return -EBUSY;
+	}
 
 	timeout = reservation_object_wait_timeout_rcu(bo->resv, true,
 						      interruptible, timeout);

drivers/gpu/drm/udl/udl_drv.c

···
 	.read = drm_read,
 	.unlocked_ioctl	= drm_ioctl,
 	.release = drm_release,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl = drm_compat_ioctl,
-#endif
 	.llseek = noop_llseek,
 };
 

drivers/gpu/drm/vc4/vc4_drv.c

···
 	.mmap = vc4_mmap,
 	.poll = drm_poll,
 	.read = drm_read,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl = drm_compat_ioctl,
-#endif
 	.llseek = noop_llseek,
 };
 

drivers/gpu/drm/via/via_drv.c

···
 	.unlocked_ioctl = drm_ioctl,
 	.mmap = drm_legacy_mmap,
 	.poll = drm_poll,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl = drm_compat_ioctl,
-#endif
 	.llseek = noop_llseek,
 };
 

drivers/gpu/drm/virtio/virtgpu_drv.c

···
 	.read = drm_read,
 	.unlocked_ioctl	= drm_ioctl,
 	.release = drm_release,
-#ifdef CONFIG_COMPAT
 	.compat_ioctl = drm_compat_ioctl,
-#endif
 	.llseek = noop_llseek,
 };
 

include/drm/drmP.h

···
 #define DRM_UT_PRIME		0x08
 #define DRM_UT_ATOMIC		0x10
 #define DRM_UT_VBL		0x20
+#define DRM_UT_STATE		0x40
 
 extern __printf(6, 7)
 void drm_dev_printk(const struct device *dev, const char *level,
···
 	_DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, PRIME, fmt, ##args)
 #define DRM_DEBUG_PRIME_RATELIMITED(fmt, args...)			\
 	DRM_DEV_DEBUG_PRIME_RATELIMITED(NULL, fmt, ##args)
+
+/* Format strings and argument splitters to simplify printing
+ * various "complex" objects
+ */
+#define DRM_MODE_FMT    "%d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x"
+#define DRM_MODE_ARG(m) \
+	(m)->base.id, (m)->name, (m)->vrefresh, (m)->clock, \
+	(m)->hdisplay, (m)->hsync_start, (m)->hsync_end, (m)->htotal, \
+	(m)->vdisplay, (m)->vsync_start, (m)->vsync_end, (m)->vtotal, \
+	(m)->type, (m)->flags
+
+#define DRM_RECT_FMT    "%dx%d%+d%+d"
+#define DRM_RECT_ARG(r) drm_rect_width(r), drm_rect_height(r), (r)->x1, (r)->y1
+
+/* for rect's in fixed-point format: */
+#define DRM_RECT_FP_FMT "%d.%06ux%d.%06u%+d.%06u%+d.%06u"
+#define DRM_RECT_FP_ARG(r) \
+		drm_rect_width(r) >> 16, ((drm_rect_width(r) & 0xffff) * 15625) >> 10, \
+		drm_rect_height(r) >> 16, ((drm_rect_height(r) & 0xffff) * 15625) >> 10, \
+		(r)->x1 >> 16, (((r)->x1 & 0xffff) * 15625) >> 10, \
+		(r)->y1 >> 16, (((r)->y1 & 0xffff) * 15625) >> 10
 
 /*@}*/
 
···
 extern int drm_ioctl_permit(u32 flags, struct drm_file *file_priv);
 extern long drm_ioctl(struct file *filp,
 		      unsigned int cmd, unsigned long arg);
+#ifdef CONFIG_COMPAT
 extern long drm_compat_ioctl(struct file *filp,
 			     unsigned int cmd, unsigned long arg);
+#else
+/* Let drm_compat_ioctl be assigned to .compat_ioctl unconditionally */
+#define drm_compat_ioctl NULL
+#endif
 extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags);
 
 /* File Operations (drm_fops.c) */

include/drm/drm_atomic.h

···
 			      struct drm_crtc *crtc);
 void drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
 				 struct drm_framebuffer *fb);
+void drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state,
+				    struct dma_fence *fence);
 int __must_check
 drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
 				  struct drm_crtc *crtc);
···
 int __must_check drm_atomic_check_only(struct drm_atomic_state *state);
 int __must_check drm_atomic_commit(struct drm_atomic_state *state);
 int __must_check drm_atomic_nonblocking_commit(struct drm_atomic_state *state);
+
+void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
+
+#ifdef CONFIG_DEBUG_FS
+struct drm_minor;
+int drm_atomic_debugfs_init(struct drm_minor *minor);
+#endif
 
 #define for_each_connector_in_state(__state, connector, connector_state, __i) \
 	for ((__i) = 0;							\

include/drm/drm_connector.h

···
 struct drm_encoder;
 struct drm_property;
 struct drm_property_blob;
+struct drm_printer;
 struct edid;
 
 enum drm_connector_force {
···
 				   const struct drm_connector_state *state,
 				   struct drm_property *property,
 				   uint64_t *val);
+
+	/**
+	 * @atomic_print_state:
+	 *
+	 * If driver subclasses struct &drm_connector_state, it should implement
+	 * this optional hook for printing additional driver specific state.
+	 *
+	 * Do not call this directly, use drm_atomic_connector_print_state()
+	 * instead.
+	 */
+	void (*atomic_print_state)(struct drm_printer *p,
+				   const struct drm_connector_state *state);
 };
 
 /* mode specified on the command line */

include/drm/drm_crtc.h

···
 struct drm_mode_set;
 struct drm_file;
 struct drm_clip_rect;
+struct drm_printer;
 struct device_node;
 struct dma_fence;
 struct edid;
···
 	 */
 	int (*set_crc_source)(struct drm_crtc *crtc, const char *source,
 			      size_t *values_cnt);
+
+	/**
+	 * @atomic_print_state:
+	 *
+	 * If driver subclasses struct &drm_crtc_state, it should implement
+	 * this optional hook for printing additional driver specific state.
+	 *
+	 * Do not call this directly, use drm_atomic_crtc_print_state()
+	 * instead.
+	 */
+	void (*atomic_print_state)(struct drm_printer *p,
+				   const struct drm_crtc_state *state);
 };
 
 /**

include/drm/drm_mm.h

···
 #ifdef CONFIG_DEBUG_FS
 #include <linux/seq_file.h>
 #endif
+#ifdef CONFIG_DRM_DEBUG_MM
+#include <linux/stackdepot.h>
+#endif
 
 enum drm_mm_search_flags {
 	DRM_MM_SEARCH_DEFAULT =		0,
···
 	u64 size;
 	u64 __subtree_last;
 	struct drm_mm *mm;
+#ifdef CONFIG_DRM_DEBUG_MM
+	depot_stack_handle_t stack;
+#endif
 };
 
 struct drm_mm {

include/drm/drm_modeset_helper_vtables.h

···
 	 *
 	 * Note that the power state of the display pipe when this function is
 	 * called depends upon the exact helpers and calling sequence the driver
-	 * has picked. See drm_atomic_commit_planes() for a discussion of the
-	 * tradeoffs and variants of plane commit helpers.
+	 * has picked. See drm_atomic_helper_commit_planes() for a discussion of
+	 * the tradeoffs and variants of plane commit helpers.
 	 *
 	 * This callback is used by the atomic modeset helpers and by the
 	 * transitional plane helpers, but it is optional.
···
 	 *
 	 * Note that the power state of the display pipe when this function is
 	 * called depends upon the exact helpers and calling sequence the driver
-	 * has picked. See drm_atomic_commit_planes() for a discussion of the
-	 * tradeoffs and variants of plane commit helpers.
+	 * has picked. See drm_atomic_helper_commit_planes() for a discussion of
+	 * the tradeoffs and variants of plane commit helpers.
 	 *
 	 * This callback is used by the atomic modeset helpers and by the
 	 * transitional plane helpers, but it is optional.
···
 	 *
 	 * Note that the power state of the display pipe when this function is
 	 * called depends upon the exact helpers and calling sequence the driver
-	 * has picked. See drm_atomic_commit_planes() for a discussion of the
-	 * tradeoffs and variants of plane commit helpers.
+	 * has picked. See drm_atomic_helper_commit_planes() for a discussion of
+	 * the tradeoffs and variants of plane commit helpers.
 	 *
 	 * This callback is used by the atomic modeset helpers and by the
 	 * transitional plane helpers, but it is optional.
···
 	 *
 	 * Note that the power state of the display pipe when this function is
 	 * called depends upon the exact helpers and calling sequence the driver
-	 * has picked. See drm_atomic_commit_planes() for a discussion of the
-	 * tradeoffs and variants of plane commit helpers.
+	 * has picked. See drm_atomic_helper_commit_planes() for a discussion of
+	 * the tradeoffs and variants of plane commit helpers.
 	 *
 	 * This callback is used by the atomic modeset helpers and by the
 	 * transitional plane helpers, but it is optional.

include/drm/drm_plane.h

···
 #include <drm/drm_mode_object.h>
 
 struct drm_crtc;
+struct drm_printer;
 
 /**
  * struct drm_plane_state - mutable plane state
  * @plane: backpointer to the plane
- * @crtc: currently bound CRTC, NULL if disabled
- * @fb: currently bound framebuffer
- * @fence: optional fence to wait for before scanning out @fb
- * @crtc_x: left position of visible portion of plane on crtc
- * @crtc_y: upper position of visible portion of plane on crtc
  * @crtc_w: width of visible portion of plane on crtc
  * @crtc_h: height of visible portion of plane on crtc
  * @src_x: left position of visible portion of plane within
···
  *	it can be trusted.
  * @src: clipped source coordinates of the plane (in 16.16)
  * @dst: clipped destination coordinates of the plane
- * @visible: visibility of the plane
  * @state: backpointer to global drm_atomic_state
  */
 struct drm_plane_state {
 	struct drm_plane *plane;
 
-	struct drm_crtc *crtc;   /* do not write directly, use drm_atomic_set_crtc_for_plane() */
-	struct drm_framebuffer *fb;  /* do not write directly, use drm_atomic_set_fb_for_plane() */
+	/**
+	 * @crtc:
+	 *
+	 * Currently bound CRTC, NULL if disabled. Do not this write directly,
+	 * use drm_atomic_set_crtc_for_plane()
+	 */
+	struct drm_crtc *crtc;
+
+	/**
+	 * @fb:
+	 *
+	 * Currently bound framebuffer. Do not write this directly, use
+	 * drm_atomic_set_fb_for_plane()
+	 */
+	struct drm_framebuffer *fb;
+
+	/**
+	 * @fence:
+	 *
+	 * Optional fence to wait for before scanning out @fb. Do not write this
+	 * directly, use drm_atomic_set_fence_for_plane()
+	 */
 	struct dma_fence *fence;
 
-	/* Signed dest location allows it to be partially off screen */
-	int32_t crtc_x, crtc_y;
+	/**
+	 * @crtc_x:
+	 *
+	 * Left position of visible portion of plane on crtc, signed dest
+	 * location allows it to be partially off screen.
+	 */
+
+	int32_t crtc_x;
+	/**
+	 * @crtc_y:
+	 *
+	 * Upper position of visible portion of plane on crtc, signed dest
+	 * location allows it to be partially off screen.
+	 */
+	int32_t crtc_y;
+
 	uint32_t crtc_w, crtc_h;
 
 	/* Source values are 16.16 fixed point */
···
 	/* Clipped coordinates */
 	struct drm_rect src, dst;
 
-	/*
-	 * Is the plane actually visible? Can be false even
-	 * if fb!=NULL and crtc!=NULL, due to clipping.
+	/**
+	 * @visible:
+	 *
+	 * Visibility of the plane. This can be false even if fb!=NULL and
+	 * crtc!=NULL, due to clipping.
 	 */
 	bool visible;
 
 	struct drm_atomic_state *state;
 };
+
+static inline struct drm_rect
+drm_plane_state_src(const struct drm_plane_state *state)
+{
+	struct drm_rect src = {
+		.x1 = state->src_x,
+		.y1 = state->src_y,
+		.x2 = state->src_x + state->src_w,
+		.y2 = state->src_y + state->src_h,
+	};
+	return src;
+}
+
+static inline struct drm_rect
+drm_plane_state_dest(const struct drm_plane_state *state)
+{
+	struct drm_rect dest = {
+		.x1 = state->crtc_x,
+		.y1 = state->crtc_y,
+		.x2 = state->crtc_x + state->crtc_w,
+		.y2 = state->crtc_y + state->crtc_h,
+	};
+	return dest;
+}
 
 /**
  * struct drm_plane_funcs - driver plane control functions
···
 	 * before data structures are torndown.
 	 */
 	void (*early_unregister)(struct drm_plane *plane);
+
+	/**
+	 * @atomic_print_state:
+	 *
+	 * If driver subclasses struct &drm_plane_state, it should implement
+	 * this optional hook for printing additional driver specific state.
+	 *
+	 * Do not call this directly, use drm_atomic_plane_print_state()
+	 * instead.
+	 */
+	void (*atomic_print_state)(struct drm_printer *p,
+				   const struct drm_plane_state *state);
 };
 
 /**

include/drm/drm_print.h

···
+/*
+ * Copyright (C) 2016 Red Hat
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Rob Clark <[e-mail]>
+ */
+
+#ifndef DRM_PRINT_H_
+#define DRM_PRINT_H_
+
+#include <linux/seq_file.h>
+#include <linux/device.h>
+
+/**
+ * DOC: print
+ *
+ * A simple wrapper for dev_printk(), seq_printf(), etc.  Allows same
+ * debug code to be used for both debugfs and printk logging.
+ *
+ * For example::
+ *
+ *     void log_some_info(struct drm_printer *p)
+ *     {
+ *             drm_printf(p, "foo=%d\n", foo);
+ *             drm_printf(p, "bar=%d\n", bar);
+ *     }
+ *
+ *     #ifdef CONFIG_DEBUG_FS
+ *     void debugfs_show(struct seq_file *f)
+ *     {
+ *             struct drm_printer p = drm_seq_file_printer(f);
+ *             log_some_info(&p);
+ *     }
+ *     #endif
+ *
+ *     void some_other_function(...)
+ *     {
+ *             struct drm_printer p = drm_info_printer(drm->dev);
+ *             log_some_info(&p);
+ *     }
+ */
+
+/**
+ * struct drm_printer - drm output "stream"
+ * @printfn: actual output fxn
+ * @arg: output fxn specific data
+ *
+ * Do not use struct members directly.  Use drm_printer_seq_file(),
+ * drm_printer_info(), etc to initialize.  And drm_printf() for output.
+ */
+struct drm_printer {
+	void (*printfn)(struct drm_printer *p, struct va_format *vaf);
+	void *arg;
+};
+
+void __drm_printfn_seq_file(struct drm_printer *p, struct va_format *vaf);
+void __drm_printfn_info(struct drm_printer *p, struct va_format *vaf);
+
+/**
+ * drm_printf - print to a &drm_printer stream
+ * @p: the &drm_printer
+ * @f: format string
+ */
+void drm_printf(struct drm_printer *p, const char *f, ...);
+
+
+/**
+ * drm_seq_file_printer - construct a &drm_printer that outputs to &seq_file
+ * @f:  the struct &seq_file to output to
+ *
+ * RETURNS:
+ * The &drm_printer object
+ */
+static inline struct drm_printer drm_seq_file_printer(struct seq_file *f)
+{
+	struct drm_printer p = {
+		.printfn = __drm_printfn_seq_file,
+		.arg = f,
+	};
+	return p;
+}
+
+/**
+ * drm_info_printer - construct a &drm_printer that outputs to dev_printk()
+ * @dev: the struct &device pointer
+ *
+ * RETURNS:
+ * The &drm_printer object
+ */
+static inline struct drm_printer drm_info_printer(struct device *dev)
+{
+	struct drm_printer p = {
+		.printfn = __drm_printfn_info,
+		.arg = dev,
+	};
+	return p;
+}
+
+#endif /* DRM_PRINT_H_ */

include/linux/dma-fence.h

···
 				   bool intr, signed long timeout);
 signed long dma_fence_wait_any_timeout(struct dma_fence **fences,
 				       uint32_t count,
-				       bool intr, signed long timeout);
+				       bool intr, signed long timeout,
+				       uint32_t *idx);
 
 /**
  * dma_fence_wait - sleep until the fence gets signaled

include/uapi/drm/amdgpu_drm.h

···
 #define DRM_AMDGPU_WAIT_CS		0x09
 #define DRM_AMDGPU_GEM_OP		0x10
 #define DRM_AMDGPU_GEM_USERPTR		0x11
+#define DRM_AMDGPU_WAIT_FENCES		0x12
 
 #define DRM_IOCTL_AMDGPU_GEM_CREATE	DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_GEM_CREATE, union drm_amdgpu_gem_create)
 #define DRM_IOCTL_AMDGPU_GEM_MMAP	DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_GEM_MMAP, union drm_amdgpu_gem_mmap)
···
 #define DRM_IOCTL_AMDGPU_WAIT_CS	DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_WAIT_CS, union drm_amdgpu_wait_cs)
 #define DRM_IOCTL_AMDGPU_GEM_OP		DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_GEM_OP, struct drm_amdgpu_gem_op)
 #define DRM_IOCTL_AMDGPU_GEM_USERPTR	DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_GEM_USERPTR, struct drm_amdgpu_gem_userptr)
+#define DRM_IOCTL_AMDGPU_WAIT_FENCES	DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_WAIT_FENCES, union drm_amdgpu_wait_fences)
 
 #define AMDGPU_GEM_DOMAIN_CPU		0x1
 #define AMDGPU_GEM_DOMAIN_GTT		0x2
···
 union drm_amdgpu_wait_cs {
 	struct drm_amdgpu_wait_cs_in in;
 	struct drm_amdgpu_wait_cs_out out;
+};
+
+struct drm_amdgpu_fence {
+	__u32 ctx_id;
+	__u32 ip_type;
+	__u32 ip_instance;
+	__u32 ring;
+	__u64 seq_no;
+};
+
+struct drm_amdgpu_wait_fences_in {
+	/** This points to uint64_t * which points to fences */
+	__u64 fences;
+	__u32 fence_count;
+	__u32 wait_all;
+	__u64 timeout_ns;
+};
+
+struct drm_amdgpu_wait_fences_out {
+	__u32 status;
+	__u32 first_signaled;
+};
+
+union drm_amdgpu_wait_fences {
+	struct drm_amdgpu_wait_fences_in in;
+	struct drm_amdgpu_wait_fences_out out;
 };
 
 #define AMDGPU_GEM_OP_GET_GEM_CREATE_INFO	0

include/uapi/drm/drm_mode.h

···
 #define DRM_MODE_TYPE_DRIVER	(1<<6)
 
 /* Video mode flags */
-/* bit compatible with the xorg definitions. */
+/* bit compatible with the xrandr RR_ definitions (bits 0-13)
+ *
+ * ABI warning: Existing userspace really expects
+ * the mode flags to match the xrandr definitions. Any
+ * changes that don't match the xrandr definitions will
+ * likely need a new client cap or some other mechanism
+ * to avoid breaking existing userspace. This includes
+ * allocating new flags in the previously unused bits!
+ */
 #define DRM_MODE_FLAG_PHSYNC			(1<<0)
 #define DRM_MODE_FLAG_NHSYNC			(1<<1)
 #define DRM_MODE_FLAG_PVSYNC			(1<<2)