drm/amdgpu: Create generic DF struct in adev

The only data fabric information the adev struct currently
contains is a function pointer table. In the near future,
we will be adding some cached DF information into adev. As
such, this patch creates a new amdgpu_df struct for adev.
Right now, it only containst the old function pointer table,
but new stuff will be added soon.

Signed-off-by: Joseph Greathouse <[e-mail]>
Reviewed-by: Alex Deucher <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

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

···
 #include "amdgpu_mes.h"
 #include "amdgpu_umc.h"
 #include "amdgpu_mmhub.h"
+#include "amdgpu_df.h"
 
 #define MAX_GPU_INSTANCE		16
 
···
 	resource_size_t bus_addr;
 };
 
-struct amdgpu_df_funcs {
-	void (*sw_init)(struct amdgpu_device *adev);
-	void (*sw_fini)(struct amdgpu_device *adev);
-	void (*enable_broadcast_mode)(struct amdgpu_device *adev,
-				      bool enable);
-	u32 (*get_fb_channel_number)(struct amdgpu_device *adev);
-	u32 (*get_hbm_channel_number)(struct amdgpu_device *adev);
-	void (*update_medium_grain_clock_gating)(struct amdgpu_device *adev,
-						 bool enable);
-	void (*get_clockgating_state)(struct amdgpu_device *adev,
-				      u32 *flags);
-	void (*enable_ecc_force_par_wr_rmw)(struct amdgpu_device *adev,
-					    bool enable);
-	int (*pmc_start)(struct amdgpu_device *adev, uint64_t config,
-					 int is_enable);
-	int (*pmc_stop)(struct amdgpu_device *adev, uint64_t config,
-					 int is_disable);
-	void (*pmc_get_count)(struct amdgpu_device *adev, uint64_t config,
-					 uint64_t *count);
-	uint64_t (*get_fica)(struct amdgpu_device *adev, uint32_t ficaa_val);
-	void (*set_fica)(struct amdgpu_device *adev, uint32_t ficaa_val,
-			 uint32_t ficadl_val, uint32_t ficadh_val);
-};
 /* Define the HW IP blocks will be used in driver , add more if necessary */
 enum amd_hw_ip_block_type {
 	GC_HWIP = 1,
···
 	bool                            enable_mes;
 	struct amdgpu_mes               mes;
 
+	/* df */
+	struct amdgpu_df                df;
+
 	struct amdgpu_ip_block          ip_blocks[AMDGPU_MAX_IP_NUM];
 	int				num_ip_blocks;
 	struct mutex	mn_lock;
···
 
 	/* soc15 register offset based on ip, instance and  segment */
 	uint32_t 		*reg_offset[MAX_HWIP][HWIP_MAX_INSTANCE];
-
-	const struct amdgpu_df_funcs	*df_funcs;
 
 	/* delayed work_func for deferring clockgating during resume */
 	struct delayed_work     delayed_init_work;

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

···
+/*
+ * Copyright 2020 Advanced Micro Devices, Inc.
+ *
+ * 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.
+ *
+ */
+
+#ifndef __AMDGPU_DF_H__
+#define __AMDGPU_DF_H__
+
+struct amdgpu_df_hash_status {
+	bool hash_64k;
+	bool hash_2m;
+	bool hash_1g;
+};
+
+struct amdgpu_df_funcs {
+	void (*sw_init)(struct amdgpu_device *adev);
+	void (*sw_fini)(struct amdgpu_device *adev);
+	void (*enable_broadcast_mode)(struct amdgpu_device *adev,
+				      bool enable);
+	u32 (*get_fb_channel_number)(struct amdgpu_device *adev);
+	u32 (*get_hbm_channel_number)(struct amdgpu_device *adev);
+	void (*update_medium_grain_clock_gating)(struct amdgpu_device *adev,
+						 bool enable);
+	void (*get_clockgating_state)(struct amdgpu_device *adev,
+				      u32 *flags);
+	void (*enable_ecc_force_par_wr_rmw)(struct amdgpu_device *adev,
+					    bool enable);
+	int (*pmc_start)(struct amdgpu_device *adev, uint64_t config,
+					 int is_enable);
+	int (*pmc_stop)(struct amdgpu_device *adev, uint64_t config,
+					 int is_disable);
+	void (*pmc_get_count)(struct amdgpu_device *adev, uint64_t config,
+					 uint64_t *count);
+	uint64_t (*get_fica)(struct amdgpu_device *adev, uint32_t ficaa_val);
+	void (*set_fica)(struct amdgpu_device *adev, uint32_t ficaa_val,
+			 uint32_t ficadl_val, uint32_t ficadh_val);
+};
+
+struct amdgpu_df {
+	struct amdgpu_df_hash_status	hash_status;
+	const struct amdgpu_df_funcs	*funcs;
+};
+
+#endif /* __AMDGPU_DF_H__ */

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

···
 	switch (pe->pmu_perf_type) {
 	case PERF_TYPE_AMDGPU_DF:
 		if (!(flags & PERF_EF_RELOAD))
-			pe->adev->df_funcs->pmc_start(pe->adev, hwc->conf, 1);
+			pe->adev->df.funcs->pmc_start(pe->adev, hwc->conf, 1);
 
-		pe->adev->df_funcs->pmc_start(pe->adev, hwc->conf, 0);
+		pe->adev->df.funcs->pmc_start(pe->adev, hwc->conf, 0);
 		break;
 	default:
 		break;
···
 
 		switch (pe->pmu_perf_type) {
 		case PERF_TYPE_AMDGPU_DF:
-			pe->adev->df_funcs->pmc_get_count(pe->adev, hwc->conf,
+			pe->adev->df.funcs->pmc_get_count(pe->adev, hwc->conf,
 							  &count);
 			break;
 		default:
···
 
 	switch (pe->pmu_perf_type) {
 	case PERF_TYPE_AMDGPU_DF:
-		pe->adev->df_funcs->pmc_stop(pe->adev, hwc->conf, 0);
+		pe->adev->df.funcs->pmc_stop(pe->adev, hwc->conf, 0);
 		break;
 	default:
 		break;
···
 
 	switch (pe->pmu_perf_type) {
 	case PERF_TYPE_AMDGPU_DF:
-		retval = pe->adev->df_funcs->pmc_start(pe->adev, hwc->conf, 1);
+		retval = pe->adev->df.funcs->pmc_start(pe->adev, hwc->conf, 1);
 		break;
 	default:
 		return 0;
···
 
 	switch (pe->pmu_perf_type) {
 	case PERF_TYPE_AMDGPU_DF:
-		pe->adev->df_funcs->pmc_stop(pe->adev, hwc->conf, 1);
+		pe->adev->df.funcs->pmc_stop(pe->adev, hwc->conf, 1);
 		break;
 	default:
 		break;

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

···
 	ficaa_pie_ctl_in = AMDGPU_XGMI_SET_FICAA(0x200);
 	ficaa_pie_status_in = AMDGPU_XGMI_SET_FICAA(0x208);
 
-	fica_out = adev->df_funcs->get_fica(adev, ficaa_pie_ctl_in);
+	fica_out = adev->df.funcs->get_fica(adev, ficaa_pie_ctl_in);
 	if (fica_out != 0x1f)
 		pr_err("xGMI error counters not enabled!\n");
 
-	fica_out = adev->df_funcs->get_fica(adev, ficaa_pie_status_in);
+	fica_out = adev->df.funcs->get_fica(adev, ficaa_pie_status_in);
 
 	if ((fica_out & 0xffff) == 2)
 		error_count = ((fica_out >> 62) & 0x1) + (fica_out >> 63);
 
-	adev->df_funcs->set_fica(adev, ficaa_pie_status_in, 0, 0);
+	adev->df.funcs->set_fica(adev, ficaa_pie_status_in, 0, 0);
 
 	return snprintf(buf, PAGE_SIZE, "%d\n", error_count);
 }

drivers/gpu/drm/amd/amdgpu/df_v1_7.c

···
 {
 	int fb_channel_number;
 
-	fb_channel_number = adev->df_funcs->get_fb_channel_number(adev);
+	fb_channel_number = adev->df.funcs->get_fb_channel_number(adev);
 
 	return df_v1_7_channel_number[fb_channel_number];
 }
···
 	u32 tmp;
 
 	/* Put DF on broadcast mode */
-	adev->df_funcs->enable_broadcast_mode(adev, true);
+	adev->df.funcs->enable_broadcast_mode(adev, true);
 
 	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_DF_MGCG)) {
 		tmp = RREG32_SOC15(DF, 0, mmDF_PIE_AON0_DfGlobalClkGater);
···
 	}
 
 	/* Exit boradcast mode */
-	adev->df_funcs->enable_broadcast_mode(adev, false);
+	adev->df.funcs->enable_broadcast_mode(adev, false);
 }
 
 static void df_v1_7_get_clockgating_state(struct amdgpu_device *adev,

drivers/gpu/drm/amd/amdgpu/df_v3_6.c

···
 {
 	int fb_channel_number;
 
-	fb_channel_number = adev->df_funcs->get_fb_channel_number(adev);
+	fb_channel_number = adev->df.funcs->get_fb_channel_number(adev);
 	if (fb_channel_number >= ARRAY_SIZE(df_v3_6_channel_number))
 		fb_channel_number = 0;
 
···
 
 	if (adev->cg_flags & AMD_CG_SUPPORT_DF_MGCG) {
 		/* Put DF on broadcast mode */
-		adev->df_funcs->enable_broadcast_mode(adev, true);
+		adev->df.funcs->enable_broadcast_mode(adev, true);
 
 		if (enable) {
 			tmp = RREG32_SOC15(DF, 0,
···
 		}
 
 		/* Exit broadcast mode */
-		adev->df_funcs->enable_broadcast_mode(adev, false);
+		adev->df.funcs->enable_broadcast_mode(adev, false);
 	}
 }
 

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

···
 			r = amdgpu_atomfirmware_mem_ecc_supported(adev);
 			if (!r) {
 				DRM_INFO("ECC is not present.\n");
-				if (adev->df_funcs->enable_ecc_force_par_wr_rmw)
-					adev->df_funcs->enable_ecc_force_par_wr_rmw(adev, false);
+				if (adev->df.funcs->enable_ecc_force_par_wr_rmw)
+					adev->df.funcs->enable_ecc_force_par_wr_rmw(adev, false);
 			} else {
 				DRM_INFO("ECC is active.\n");
 			}
···
 		else
 			chansize = 128;
 
-		numchan = adev->df_funcs->get_hbm_channel_number(adev);
+		numchan = adev->df.funcs->get_hbm_channel_number(adev);
 		adev->gmc.vram_width = numchan * chansize;
 	}
 

drivers/gpu/drm/amd/amdgpu/soc15.c

···
 	}
 
 	if (adev->asic_type == CHIP_VEGA20 || adev->asic_type == CHIP_ARCTURUS)
-		adev->df_funcs = &df_v3_6_funcs;
+		adev->df.funcs = &df_v3_6_funcs;
 	else
-		adev->df_funcs = &df_v1_7_funcs;
+		adev->df.funcs = &df_v1_7_funcs;
 
 	adev->rev_id = soc15_get_rev_id(adev);
 	adev->nbio.funcs->detect_hw_virt(adev);
···
 	if (amdgpu_sriov_vf(adev))
 		xgpu_ai_mailbox_add_irq_id(adev);
 
-	adev->df_funcs->sw_init(adev);
+	adev->df.funcs->sw_init(adev);
 
 	return 0;
 }
···
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
 	amdgpu_nbio_ras_fini(adev);
-	adev->df_funcs->sw_fini(adev);
+	adev->df.funcs->sw_fini(adev);
 	return 0;
 }
 
···
 				state == AMD_CG_STATE_GATE ? true : false);
 		soc15_update_rom_medium_grain_clock_gating(adev,
 				state == AMD_CG_STATE_GATE ? true : false);
-		adev->df_funcs->update_medium_grain_clock_gating(adev,
+		adev->df.funcs->update_medium_grain_clock_gating(adev,
 				state == AMD_CG_STATE_GATE ? true : false);
 		break;
 	case CHIP_RAVEN:
···
 	if (!(data & CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE0_MASK))
 		*flags |= AMD_CG_SUPPORT_ROM_MGCG;
 
-	adev->df_funcs->get_clockgating_state(adev, flags);
+	adev->df.funcs->get_clockgating_state(adev, flags);
 }
 
 static int soc15_common_set_powergating_state(void *handle,