drm/amd/powerplay: add avfs fuse overdriver func.

Add a function to look up the AVFS fuse values for vega10
These are used to populate the avfs fuse table in the smu.
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/hwmgr/Makefile

@@ -9,8 +9,7 @@ HARDWARE_MGR = hwmgr.o processpptables.o functiontables.o \
 		smu7_hwmgr.o smu7_powertune.o smu7_thermal.o \
 		smu7_clockpowergating.o \
 		vega10_processpptables.o vega10_hwmgr.o vega10_powertune.o \
-		vega10_thermal.o
-
+		vega10_thermal.o pp_overdriver.o
 
 AMD_PP_HWMGR = $(addprefix $(AMD_PP_PATH)/hwmgr/,$(HARDWARE_MGR))
 

drivers/gpu/drm/amd/powerplay/hwmgr/pp_overdriver.h

+/*
+ * Copyright 2015 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 _PP_OVERDRIVER_H_
+#define _PP_OVERDRIVER_H_
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+
+struct phm_fuses_default {
+	const char *key;
+	uint32_t VFT2_m1;
+	uint32_t VFT2_m2;
+	uint32_t VFT2_b;
+	uint32_t VFT1_m1;
+	uint32_t VFT1_m2;
+	uint32_t VFT1_b;
+	uint32_t VFT0_m1;
+	uint32_t VFT0_m2;
+	uint32_t VFT0_b;
+};
+
+extern struct phm_fuses_default vega10_fuses_default[];
+extern int pp_override_get_default_fuse_value(uint64_t key,
+			struct phm_fuses_default list[],
+			struct phm_fuses_default *result);
+
+#endif
\ No newline at end of file

drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c

@@ -47,7 +47,7 @@
 #include "amd_pcie_helpers.h"
 #include "cgs_linux.h"
 #include "ppinterrupt.h"
-
+#include "pp_overdriver.h"
 
 #define VOLTAGE_SCALE  4
 #define VOLTAGE_VID_OFFSET_SCALE1   625
@@ -2286,6 +2286,45 @@ static int vega10_avfs_enable(struct pp_hwmgr *hwmgr, bool enable)
 	return 0;
 }
 
+static int vega10_populate_and_upload_avfs_fuse_override(struct pp_hwmgr *hwmgr)
+{
+	int result = 0;
+
+	uint64_t serial_number = 0;
+	uint32_t top32, bottom32;
+	struct phm_fuses_default fuse;
+
+	struct vega10_hwmgr *data = (struct vega10_hwmgr *)(hwmgr->backend);
+	AvfsFuseOverride_t *avfs_fuse_table = &(data->smc_state_table.avfs_fuse_override_table);
+
+	smum_send_msg_to_smc(hwmgr->smumgr, PPSMC_MSG_ReadSerialNumTop32);
+	vega10_read_arg_from_smc(hwmgr->smumgr, &top32);
+
+	smum_send_msg_to_smc(hwmgr->smumgr, PPSMC_MSG_ReadSerialNumBottom32);
+	vega10_read_arg_from_smc(hwmgr->smumgr, &bottom32);
+
+	serial_number = ((uint64_t)bottom32 << 32) | top32;
+
+	if (pp_override_get_default_fuse_value(serial_number, vega10_fuses_default, &fuse) == 0) {
+		avfs_fuse_table->VFT0_b  = fuse.VFT0_b;
+		avfs_fuse_table->VFT0_m1 = fuse.VFT0_m1;
+		avfs_fuse_table->VFT0_m2 = fuse.VFT0_m2;
+		avfs_fuse_table->VFT1_b  = fuse.VFT1_b;
+		avfs_fuse_table->VFT1_m1 = fuse.VFT1_m1;
+		avfs_fuse_table->VFT1_m2 = fuse.VFT1_m2;
+		avfs_fuse_table->VFT2_b  = fuse.VFT2_b;
+		avfs_fuse_table->VFT2_m1 = fuse.VFT2_m1;
+		avfs_fuse_table->VFT2_m2 = fuse.VFT2_m2;
+		result = vega10_copy_table_to_smc(hwmgr->smumgr,
+			(uint8_t *)avfs_fuse_table, AVFSFUSETABLE);
+		PP_ASSERT_WITH_CODE(!result,
+			"Failed to upload FuseOVerride!",
+			);
+	}
+
+	return result;
+}
+
 static int vega10_save_default_power_profile(struct pp_hwmgr *hwmgr)
 {
 	struct vega10_hwmgr *data = (struct vega10_hwmgr *)(hwmgr->backend);
@@ -2439,6 +2478,8 @@ static int vega10_init_smc_table(struct pp_hwmgr *hwmgr)
 	pp_table->GfxActivityAverageAlpha = (uint8_t)
 			(data->gfx_activity_average_alpha);
 
+	vega10_populate_and_upload_avfs_fuse_override(hwmgr);
+
 	result = vega10_copy_table_to_smc(hwmgr->smumgr,
 			(uint8_t *)pp_table, PPTABLE);
 	PP_ASSERT_WITH_CODE(!result,

drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.h

@@ -210,6 +210,7 @@ struct vega10_smc_state_table {
 	PPTable_t       pp_table;
 	Watermarks_t    water_marks_table;
 	AvfsTable_t     avfs_table;
+	AvfsFuseOverride_t avfs_fuse_override_table;
 };
 
 struct vega10_mclk_latency_entries {