drm/amdgpu/powerplay: add power up/down SDMA interfaces for renoir

1.Implement PowerUpSDMA/PowerDownSDMA interfaces in the swSMU for renoir
2.adjust smu ip block ahead of gfx&sdma ip block

Signed-off-by: Aaron Liu <aaron.liu@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

3 files changed, 40 insertions, 4 deletions

diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index c35c8a273051..b9dee9934f0a 100644
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -1263,6 +1263,9 @@ static int smu_hw_init(void *handle)
 		return ret;
 	}
 
+	if (adev->asic_type == CHIP_RENOIR)
+		smu_powergate_sdma(&adev->smu, false);
+
 	if (!smu->pm_enabled)
 		return 0;
 
@@ -1310,6 +1313,9 @@ static int smu_hw_fini(void *handle)
 	struct smu_table_context *table_context = &smu->smu_table;
 	int ret = 0;
 
+	if (adev->asic_type == CHIP_RENOIR)
+		smu_powergate_sdma(&adev->smu, true);
+
 	kfree(table_context->driver_pptable);
 	table_context->driver_pptable = NULL;
 
diff --git a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
index 61d453f83f88..536f547f01c5 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
@@ -473,6 +473,7 @@ struct smu_funcs
 	int (*parse_pptable)(struct smu_context *smu);
 	int (*populate_smc_pptable)(struct smu_context *smu);
 	int (*check_fw_version)(struct smu_context *smu);
+	int (*powergate_sdma)(struct smu_context *smu, bool gate);
 	int (*write_pptable)(struct smu_context *smu);
 	int (*set_min_dcef_deep_sleep)(struct smu_context *smu);
 	int (*set_tool_table_location)(struct smu_context *smu);
@@ -549,6 +550,8 @@ struct smu_funcs
 	((smu)->funcs->check_fw_status ? (smu)->funcs->check_fw_status((smu)) : 0)
 #define smu_setup_pptable(smu) \
 	((smu)->funcs->setup_pptable ? (smu)->funcs->setup_pptable((smu)) : 0)
+#define smu_powergate_sdma(smu, gate) \
+	((smu)->funcs->powergate_sdma ? (smu)->funcs->powergate_sdma((smu), (gate)) : 0)
 #define smu_get_vbios_bootup_values(smu) \
 	((smu)->funcs->get_vbios_bootup_values ? (smu)->funcs->get_vbios_bootup_values((smu)) : 0)
 #define smu_get_clk_info_from_vbios(smu) \
diff --git a/drivers/gpu/drm/amd/powerplay/smu_v12_0.c b/drivers/gpu/drm/amd/powerplay/smu_v12_0.c
index fdafa2306c29..cba8507a02af 100644
--- a/drivers/gpu/drm/amd/powerplay/smu_v12_0.c
+++ b/drivers/gpu/drm/amd/powerplay/smu_v12_0.c
@@ -101,7 +101,6 @@ static int
 smu_v12_0_send_msg_with_param(struct smu_context *smu, uint16_t msg,
 			      uint32_t param)
 {
-
 	struct amdgpu_device *adev = smu->adev;
 	int ret = 0, index = 0;
 
@@ -128,27 +127,55 @@ smu_v12_0_send_msg_with_param(struct smu_context *smu, uint16_t msg,
 	return ret;
 }
 
+static int smu_v12_0_check_fw_status(struct smu_context *smu)
+{
+	struct amdgpu_device *adev = smu->adev;
+	uint32_t mp1_fw_flags;
+
+	mp1_fw_flags = RREG32_PCIE(MP1_Public |
+		(smnMP1_FIRMWARE_FLAGS & 0xffffffff));
+
+	if ((mp1_fw_flags & MP1_FIRMWARE_FLAGS__INTERRUPTS_ENABLED_MASK) >>
+		MP1_FIRMWARE_FLAGS__INTERRUPTS_ENABLED__SHIFT)
+		return 0;
+
+	return -EIO;
+}
+
 static int smu_v12_0_check_fw_version(struct smu_context *smu)
 {
-	uint32_t smu_version = 0xff;
+	uint32_t smc_if_version = 0xff;
 	int ret = 0;
 
 	ret = smu_send_smc_msg(smu, SMU_MSG_GetDriverIfVersion);
 	if (ret)
 		goto err;
 
-	ret = smu_read_smc_arg(smu, &smu_version);
+	ret = smu_read_smc_arg(smu, &smc_if_version);
 	if (ret)
 		goto err;
 
-	if (smu_version != smu->smc_if_version)
+	if (smc_if_version != smu->smc_if_version)
 		ret = -EINVAL;
 err:
 	return ret;
 }
 
+static int smu_v12_0_powergate_sdma(struct smu_context *smu, bool gate)
+{
+	if (!(smu->adev->flags & AMD_IS_APU))
+		return 0;
+
+	if (gate)
+		return smu_send_smc_msg(smu, SMU_MSG_PowerDownSdma);
+	else
+		return smu_send_smc_msg(smu, SMU_MSG_PowerUpSdma);
+}
+
 static const struct smu_funcs smu_v12_0_funcs = {
+	.check_fw_status = smu_v12_0_check_fw_status,
 	.check_fw_version = smu_v12_0_check_fw_version,
+	.powergate_sdma = smu_v12_0_powergate_sdma,
 	.send_smc_msg = smu_v12_0_send_msg,
 	.send_smc_msg_with_param = smu_v12_0_send_msg_with_param,
 	.read_smc_arg = smu_v12_0_read_arg,