[PATCH 7/9] drm/amd/pm: apply the CDR workarounds only with some specific UMC firmwares

[Evan Quan]

And different workaround will be applied based on hybrid cdr bit.

Change-Id: I828dc3605dbe0bb5a5e1a0db409658608ff21888
Signed-off-by: Evan Quan <evan.quan at amd.com>
---
 drivers/gpu/drm/amd/pm/inc/smu_types.h        |  1 +
 drivers/gpu/drm/amd/pm/inc/smu_v11_0_ppsmc.h  |  4 ++-
 .../gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c   | 28 +++++++++++++++----
 3 files changed, 26 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/inc/smu_types.h b/drivers/gpu/drm/amd/pm/inc/smu_types.h
index 4a8655a20ef6..35fc46d3c9c0 100644
--- a/drivers/gpu/drm/amd/pm/inc/smu_types.h
+++ b/drivers/gpu/drm/amd/pm/inc/smu_types.h
@@ -175,6 +175,7 @@
 	__SMU_DUMMY_MAP(DAL_ENABLE_DUMMY_PSTATE_CHANGE), \
 	__SMU_DUMMY_MAP(SET_DRIVER_DUMMY_TABLE_DRAM_ADDR_HIGH), \
 	__SMU_DUMMY_MAP(SET_DRIVER_DUMMY_TABLE_DRAM_ADDR_LOW), \
+	__SMU_DUMMY_MAP(GET_UMC_FW_WA), \
 	__SMU_DUMMY_MAP(Mode1Reset), \
 
 #undef __SMU_DUMMY_MAP
diff --git a/drivers/gpu/drm/amd/pm/inc/smu_v11_0_ppsmc.h b/drivers/gpu/drm/amd/pm/inc/smu_v11_0_ppsmc.h
index fc8594e9b2bd..26181b679098 100644
--- a/drivers/gpu/drm/amd/pm/inc/smu_v11_0_ppsmc.h
+++ b/drivers/gpu/drm/amd/pm/inc/smu_v11_0_ppsmc.h
@@ -128,7 +128,9 @@
 #define PPSMC_MSG_SetDriverDummyTableDramAddrHigh 0x4E
 #define PPSMC_MSG_SetDriverDummyTableDramAddrLow  0x4F
 
-#define PPSMC_Message_Count                      0x50
+#define PPSMC_MSG_GetUMCFWWA                     0x50
+
+#define PPSMC_Message_Count                      0x51
 
 typedef uint32_t PPSMC_Result;
 typedef uint32_t PPSMC_Msg;
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c
index 061eee1a4c32..e02d036fb298 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c
@@ -142,6 +142,7 @@ static struct cmn2asic_msg_mapping navi10_message_map[SMU_MSG_MAX_COUNT] = {
 	MSG_MAP(SetMGpuFanBoostLimitRpm,	PPSMC_MSG_SetMGpuFanBoostLimitRpm,	0),
 	MSG_MAP(SET_DRIVER_DUMMY_TABLE_DRAM_ADDR_HIGH, PPSMC_MSG_SetDriverDummyTableDramAddrHigh, 0),
 	MSG_MAP(SET_DRIVER_DUMMY_TABLE_DRAM_ADDR_LOW, PPSMC_MSG_SetDriverDummyTableDramAddrLow, 0),
+	MSG_MAP(GET_UMC_FW_WA,			PPSMC_MSG_GetUMCFWWA,			0),
 };
 
 static struct cmn2asic_mapping navi10_clk_map[SMU_CLK_COUNT] = {
@@ -2278,21 +2279,36 @@ static int navi10_set_dummy_pstates_table_location(struct smu_context *smu)
 
 static int navi10_disable_umc_cdr_12gbps_workaround(struct smu_context *smu)
 {
-	uint32_t smu_version;
+	struct amdgpu_device *adev = smu->adev;
+	uint8_t umc_fw_greater_than_v136 = false;
+	uint8_t umc_fw_disable_cdr = false;
+	uint32_t param;
 	int ret = 0;
 
-	if (!navi10_need_umc_cdr_12gbps_workaround(smu->adev))
+	if (!navi10_need_umc_cdr_12gbps_workaround(adev))
 		return 0;
 
-	ret = smu_cmn_get_smc_version(smu, NULL, &smu_version);
+	ret = smu_cmn_send_smc_msg_with_param(smu,
+					      SMU_MSG_GET_UMC_FW_WA,
+					      0,
+					      &param);
 	if (ret)
 		return ret;
 
-	/* This workaround is available only for 42.50 or later SMC firmwares */
-	if (smu_version < 0x2A3200)
+	/* First bit indicates if the UMC f/w is above v137 */
+	umc_fw_greater_than_v136 = param & 0x1;
+
+	/* Second bit indicates if hybrid-cdr is disabled */
+	umc_fw_disable_cdr = param & 0x2;
+
+	/* w/a only allowed if UMC f/w is <= 136 */
+	if (umc_fw_greater_than_v136)
 		return 0;
 
-	return navi10_umc_hybrid_cdr_workaround(smu);
+	if (umc_fw_disable_cdr && adev->asic_type == CHIP_NAVI10)
+		return navi10_umc_hybrid_cdr_workaround(smu);
+	else
+		return navi10_set_dummy_pstates_table_location(smu);
 }
 
 static void navi10_fill_i2c_req(SwI2cRequest_t  *req, bool write,
-- 
2.28.0