[PATCH 071/138] drm/amd/powerplay: add get_max_sustainable_clock function
Huang Rui
ray.huang at amd.com
Fri Jan 25 10:24:38 UTC 2019
This patch adds get_max_sustainable_clock function for smu11.
Signed-off-by: Huang Rui <ray.huang at amd.com>
Reviewed-by: Kevin Wang <Kevin1.Wang at amd.com>
---
drivers/gpu/drm/amd/powerplay/amdgpu_smu.c | 9 ++
drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h | 4 +
drivers/gpu/drm/amd/powerplay/inc/smu_v11_0.h | 8 ++
drivers/gpu/drm/amd/powerplay/smu_v11_0.c | 114 +++++++++++++++++++++++++
4 files changed, 135 insertions(+)
diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index b225cf8..cd04369 100644
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -393,6 +393,10 @@ static int smu_smc_table_hw_init(struct smu_context *smu)
if (ret)
return ret;
+ ret = smu_init_max_sustainable_clocks(smu);
+ if (ret)
+ return ret;
+
ret = smu_populate_umd_state_clk(smu);
if (ret)
return ret;
@@ -539,6 +543,11 @@ static int smu_hw_fini(void *handle)
return -EINVAL;
kfree(table_context->driver_pptable);
+ if (table_context->max_sustainable_clocks) {
+ kfree(table_context->max_sustainable_clocks);
+ table_context->max_sustainable_clocks = NULL;
+ }
+
ret = smu_fini_fb_allocations(smu);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
index a3c8b73..a68519e 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
@@ -158,6 +158,7 @@ struct smu_table_context
void *power_play_table;
uint32_t power_play_table_size;
+ void *max_sustainable_clocks;
struct smu_bios_boot_up_values boot_values;
void *driver_pptable;
struct smu_table *tables;
@@ -253,6 +254,7 @@ struct smu_funcs
int (*notify_display_change)(struct smu_context *smu);
int (*get_power_limit)(struct smu_context *smu);
int (*get_current_clk_freq)(struct smu_context *smu, uint32_t clk_id, uint32_t *value);
+ int (*init_max_sustainable_clocks)(struct smu_context *smu);
};
#define smu_init_microcode(smu) \
@@ -297,6 +299,8 @@ struct smu_funcs
((smu)->funcs->set_last_dcef_min_deep_sleep_clk ? (smu)->funcs->set_last_dcef_min_deep_sleep_clk((smu)) : 0)
#define smu_system_features_control(smu, en) \
((smu)->funcs->system_features_control ? (smu)->funcs->system_features_control((smu), (en)) : 0)
+#define smu_init_max_sustainable_clocks(smu) \
+ ((smu)->funcs->init_max_sustainable_clocks ? (smu)->funcs->init_max_sustainable_clocks((smu)) : 0)
#define smu_send_smc_msg(smu, msg) \
((smu)->funcs->send_smc_msg? (smu)->funcs->send_smc_msg((smu), (msg)) : 0)
#define smu_send_smc_msg_with_param(smu, msg, param) \
diff --git a/drivers/gpu/drm/amd/powerplay/inc/smu_v11_0.h b/drivers/gpu/drm/amd/powerplay/inc/smu_v11_0.h
index 2853ab7..aa8d81f 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/smu_v11_0.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/smu_v11_0.h
@@ -36,6 +36,14 @@
#define smnMP0_FW_INTF 0x30101c0
#define smnMP1_PUB_CTRL 0x3010b14
+struct smu_11_0_max_sustainable_clocks {
+ uint32_t display_clock;
+ uint32_t phy_clock;
+ uint32_t pixel_clock;
+ uint32_t uclock;
+ uint32_t dcef_clock;
+ uint32_t soc_clock;
+};
struct smu_11_0_dpm_table {
uint32_t min; /* MHz */
diff --git a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
index def64f5..129d2b1 100644
--- a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
+++ b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
@@ -738,6 +738,119 @@ static int smu_v11_0_notify_display_change(struct smu_context *smu)
return ret;
}
+static int
+smu_v11_0_get_max_sustainable_clock(struct smu_context *smu, uint32_t *clock,
+ PPCLK_e clock_select)
+{
+ int ret = 0;
+
+ ret = smu_send_smc_msg_with_param(smu, SMU_MSG_GetDcModeMaxDpmFreq,
+ clock_select << 16);
+ if (ret) {
+ pr_err("[GetMaxSustainableClock] Failed to get max DC clock from SMC!");
+ return ret;
+ }
+
+ ret = smu_read_smc_arg(smu, clock);
+ if (ret)
+ return ret;
+
+ if (*clock != 0)
+ return 0;
+
+ /* if DC limit is zero, return AC limit */
+ ret = smu_send_smc_msg_with_param(smu, SMU_MSG_GetMaxDpmFreq,
+ clock_select << 16);
+ if (ret) {
+ pr_err("[GetMaxSustainableClock] failed to get max AC clock from SMC!");
+ return ret;
+ }
+
+ ret = smu_read_smc_arg(smu, clock);
+
+ return ret;
+}
+
+static int smu_v11_0_init_max_sustainable_clocks(struct smu_context *smu)
+{
+ struct smu_11_0_max_sustainable_clocks *max_sustainable_clocks;
+ int ret = 0;
+
+ max_sustainable_clocks = kzalloc(sizeof(struct smu_11_0_max_sustainable_clocks),
+ GFP_KERNEL);
+ smu->smu_table.max_sustainable_clocks = (void *)max_sustainable_clocks;
+
+ max_sustainable_clocks->uclock = smu->smu_table.boot_values.uclk / 100;
+ max_sustainable_clocks->soc_clock = smu->smu_table.boot_values.socclk / 100;
+ max_sustainable_clocks->dcef_clock = smu->smu_table.boot_values.dcefclk / 100;
+ max_sustainable_clocks->display_clock = 0xFFFFFFFF;
+ max_sustainable_clocks->phy_clock = 0xFFFFFFFF;
+ max_sustainable_clocks->pixel_clock = 0xFFFFFFFF;
+
+ if (smu_feature_is_enabled(smu, FEATURE_DPM_UCLK_BIT)) {
+ ret = smu_v11_0_get_max_sustainable_clock(smu,
+ &(max_sustainable_clocks->uclock),
+ PPCLK_UCLK);
+ if (ret) {
+ pr_err("[%s] failed to get max UCLK from SMC!",
+ __func__);
+ return ret;
+ }
+ }
+
+ if (smu_feature_is_enabled(smu, FEATURE_DPM_SOCCLK_BIT)) {
+ ret = smu_v11_0_get_max_sustainable_clock(smu,
+ &(max_sustainable_clocks->soc_clock),
+ PPCLK_SOCCLK);
+ if (ret) {
+ pr_err("[%s] failed to get max SOCCLK from SMC!",
+ __func__);
+ return ret;
+ }
+ }
+
+ if (smu_feature_is_enabled(smu, FEATURE_DPM_DCEFCLK_BIT)) {
+ ret = smu_v11_0_get_max_sustainable_clock(smu,
+ &(max_sustainable_clocks->dcef_clock),
+ PPCLK_DCEFCLK);
+ if (ret) {
+ pr_err("[%s] failed to get max DCEFCLK from SMC!",
+ __func__);
+ return ret;
+ }
+
+ ret = smu_v11_0_get_max_sustainable_clock(smu,
+ &(max_sustainable_clocks->display_clock),
+ PPCLK_DISPCLK);
+ if (ret) {
+ pr_err("[%s] failed to get max DISPCLK from SMC!",
+ __func__);
+ return ret;
+ }
+ ret = smu_v11_0_get_max_sustainable_clock(smu,
+ &(max_sustainable_clocks->phy_clock),
+ PPCLK_PHYCLK);
+ if (ret) {
+ pr_err("[%s] failed to get max PHYCLK from SMC!",
+ __func__);
+ return ret;
+ }
+ ret = smu_v11_0_get_max_sustainable_clock(smu,
+ &(max_sustainable_clocks->pixel_clock),
+ PPCLK_PIXCLK);
+ if (ret) {
+ pr_err("[%s] failed to get max PIXCLK from SMC!",
+ __func__);
+ return ret;
+ }
+ }
+
+ if (max_sustainable_clocks->soc_clock < max_sustainable_clocks->uclock)
+ max_sustainable_clocks->uclock = max_sustainable_clocks->soc_clock;
+
+ return 0;
+}
+
static int smu_v11_0_get_power_limit(struct smu_context *smu)
{
int ret;
@@ -810,6 +923,7 @@ static const struct smu_funcs smu_v11_0_funcs = {
.notify_display_change = smu_v11_0_notify_display_change,
.get_power_limit = smu_v11_0_get_power_limit,
.get_current_clk_freq = smu_v11_0_get_current_clk_freq,
+ .init_max_sustainable_clocks = smu_v11_0_init_max_sustainable_clocks,
};
void smu_v11_0_set_smu_funcs(struct smu_context *smu)
--
2.7.4
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