Re: [PATCH] drm/amd/powerplay: add baco smu reset function for smu11

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ping...,

which one can help me review this patch.

thanks.


Best Regards,

Kevin


From: Wang, Kevin(Yang)
Sent: Wednesday, July 3, 2019 11:09:45 AM
To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
Cc: Zhang, Hawking; Xiao, Jack; Huang, Ray; Wang, Kevin(Yang)
Subject: [PATCH] drm/amd/powerplay: add baco smu reset function for smu11
 
add baco reset support for smu11.
it can help gpu do asic reset when gpu recovery.

Change-Id: I7714ed03ad87c13e93ca1a7e6aef81eba14667c8
Signed-off-by: Kevin Wang <kevin1.wang@xxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c        |  6 +-
 drivers/gpu/drm/amd/amdgpu/nv.c               |  9 +-
 drivers/gpu/drm/amd/powerplay/amdgpu_smu.c    | 14 +++
 .../gpu/drm/amd/powerplay/inc/amdgpu_smu.h    | 26 ++++++
 drivers/gpu/drm/amd/powerplay/inc/smu_v11_0.h |  8 ++
 drivers/gpu/drm/amd/powerplay/navi10_ppt.c    |  8 ++
 drivers/gpu/drm/amd/powerplay/smu_v11_0.c     | 91 +++++++++++++++++++
 7 files changed, 159 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
index b41169261f7d..45dd22a1ef77 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
@@ -244,8 +244,10 @@ static void gmc_v10_0_flush_gpu_tlb(struct amdgpu_device *adev,
         mutex_lock(&adev->mman.gtt_window_lock);
 
         gmc_v10_0_flush_vm_hub(adev, vmid, AMDGPU_MMHUB, 0);
-       if (!adev->mman.buffer_funcs_enabled || !adev->ib_pool_ready ||
-           adev->asic_type != CHIP_NAVI10) {
+       if (!adev->mman.buffer_funcs_enabled ||
+           !adev->ib_pool_ready ||
+           adev->asic_type != CHIP_NAVI10 ||
+           adev->in_gpu_reset) {
                 gmc_v10_0_flush_vm_hub(adev, vmid, AMDGPU_GFXHUB, 0);
                 mutex_unlock(&adev->mman.gtt_window_lock);
                 return;
diff --git a/drivers/gpu/drm/amd/amdgpu/nv.c b/drivers/gpu/drm/amd/amdgpu/nv.c
index 8f605417b40a..cc5d06718e4c 100644
--- a/drivers/gpu/drm/amd/amdgpu/nv.c
+++ b/drivers/gpu/drm/amd/amdgpu/nv.c
@@ -31,6 +31,7 @@
 #include "amdgpu_vce.h"
 #include "amdgpu_ucode.h"
 #include "amdgpu_psp.h"
+#include "amdgpu_smu.h"
 #include "atom.h"
 #include "amd_pcie.h"
 
@@ -266,8 +267,14 @@ static int nv_asic_reset(struct amdgpu_device *adev)
 
         amdgpu_atombios_scratch_regs_engine_hung(adev, false);
 #endif
+       int ret = 0;
+       struct smu_context *smu = &adev->smu;
 
-       return 0;
+       if (smu_baco_is_support(smu)) {
+               ret = smu_baco_reset(smu);
+       }
+
+       return ret;
 }
 
 static int nv_set_uvd_clocks(struct amdgpu_device *adev, u32 vclk, u32 dclk)
diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index b28a923f998d..fc416c686151 100644
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -633,6 +633,11 @@ static int smu_sw_init(void *handle)
         bitmap_zero(smu->smu_feature.supported, SMU_FEATURE_MAX);
         bitmap_zero(smu->smu_feature.enabled, SMU_FEATURE_MAX);
         bitmap_zero(smu->smu_feature.allowed, SMU_FEATURE_MAX);
+
+       mutex_init(&smu->smu_baco.mutex);
+       smu->smu_baco.state = SMU_BACO_STATE_EXIT;
+       smu->smu_baco.platform_support = false;
+
         smu->watermarks_bitmap = 0;
         smu->power_profile_mode = PP_SMC_POWER_PROFILE_BOOTUP_DEFAULT;
         smu->default_power_profile_mode = PP_SMC_POWER_PROFILE_BOOTUP_DEFAULT;
@@ -1057,11 +1062,20 @@ static int smu_suspend(void *handle)
         int ret;
         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
         struct smu_context *smu = &adev->smu;
+       bool baco_feature_is_enabled = smu_feature_is_enabled(smu, SMU_FEATURE_BACO_BIT);
 
         ret = smu_system_features_control(smu, false);
         if (ret)
                 return ret;
 
+       if (adev->in_gpu_reset && baco_feature_is_enabled) {
+               ret = smu_feature_set_enabled(smu, SMU_FEATURE_BACO_BIT, true);
+               if (ret) {
+                       pr_warn("set BACO feature enabled failed, return %d\n", ret);
+                       return ret;
+               }
+       }
+
         smu->watermarks_bitmap &= ~(WATERMARKS_LOADED);
 
         if (adev->asic_type >= CHIP_NAVI10 &&
diff --git a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
index 2818df46481c..c97324ef7db2 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
@@ -241,6 +241,7 @@ enum smu_message_type
         SMU_MSG_PowerUpJpeg,
         SMU_MSG_PowerDownJpeg,
         SMU_MSG_BacoAudioD3PME,
+       SMU_MSG_ArmD3,
         SMU_MSG_MAX_COUNT,
 };
 
@@ -489,6 +490,19 @@ struct mclock_latency_table {
         struct mclk_latency_entries  entries[MAX_REGULAR_DPM_NUM];
 };
 
+enum smu_baco_state
+{
+       SMU_BACO_STATE_ENTER = 0,
+       SMU_BACO_STATE_EXIT,
+};
+
+struct smu_baco_context
+{
+       struct mutex mutex;
+       uint32_t state;
+       bool platform_support;
+};
+
 #define WORKLOAD_POLICY_MAX 7
 struct smu_context
 {
@@ -505,6 +519,7 @@ struct smu_context
         struct smu_power_context        smu_power;
         struct smu_feature              smu_feature;
         struct amd_pp_display_configuration  *display_config;
+       struct smu_baco_context         smu_baco;
         void *od_settings;
 
         uint32_t pstate_sclk;
@@ -680,6 +695,11 @@ struct smu_funcs
         int (*register_irq_handler)(struct smu_context *smu);
         int (*set_azalia_d3_pme)(struct smu_context *smu);
         int (*get_max_sustainable_clocks_by_dc)(struct smu_context *smu, struct pp_smu_nv_clock_table *max_clocks);
+       bool (*baco_is_support)(struct smu_context *smu);
+       enum smu_baco_state (*baco_get_state)(struct smu_context *smu);
+       int (*baco_set_state)(struct smu_context *smu, enum smu_baco_state state);
+       int (*baco_reset)(struct smu_context *smu);
+
 };
 
 #define smu_init_microcode(smu) \
@@ -892,6 +912,12 @@ struct smu_funcs
         ((smu)->funcs->get_max_sustainable_clocks_by_dc ? (smu)->funcs->get_max_sustainable_clocks_by_dc((smu), (max_clocks)) : 0)
 #define smu_get_uclk_dpm_states(smu, clocks_in_khz, num_states) \
         ((smu)->ppt_funcs->get_uclk_dpm_states ? (smu)->ppt_funcs->get_uclk_dpm_states((smu), (clocks_in_khz), (num_states)) : 0)
+#define smu_baco_is_support(smu) \
+       ((smu)->funcs->baco_is_support? (smu)->funcs->baco_is_support((smu)) : false)
+#define smu_baco_get_state(smu, state) \
+       ((smu)->funcs->baco_get_state? (smu)->funcs->baco_get_state((smu), (state)) : 0)
+#define smu_baco_reset(smu) \
+       ((smu)->funcs->baco_reset? (smu)->funcs->baco_reset((smu)) : 0)
 
 extern int smu_get_atom_data_table(struct smu_context *smu, uint32_t table,
                                    uint16_t *size, uint8_t *frev, uint8_t *crev,
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 d93cd76269b4..2fff4b16cb4e 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/smu_v11_0.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/smu_v11_0.h
@@ -105,6 +105,14 @@ struct smu_11_0_power_context {
         enum smu_11_0_power_state power_state;
 };
 
+enum smu_v11_0_baco_seq {
+       BACO_SEQ_BACO = 0,
+       BACO_SEQ_MSR,
+       BACO_SEQ_BAMACO,
+       BACO_SEQ_ULPS,
+       BACO_SEQ_COUNT,
+};
+
 void smu_v11_0_set_smu_funcs(struct smu_context *smu);
 
 #endif
diff --git a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
index 373aeba44f16..7574a02350c6 100644
--- a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
@@ -115,6 +115,7 @@ static int navi10_message_map[SMU_MSG_MAX_COUNT] = {
         MSG_MAP(PowerUpJpeg,            PPSMC_MSG_PowerUpJpeg),
         MSG_MAP(PowerDownJpeg,          PPSMC_MSG_PowerDownJpeg),
         MSG_MAP(BacoAudioD3PME,         PPSMC_MSG_BacoAudioD3PME),
+       MSG_MAP(ArmD3,                  PPSMC_MSG_ArmD3),
 };
 
 static int navi10_clk_map[SMU_CLK_COUNT] = {
@@ -478,6 +479,7 @@ static int navi10_store_powerplay_table(struct smu_context *smu)
 {
         struct smu_11_0_powerplay_table *powerplay_table = NULL;
         struct smu_table_context *table_context = &smu->smu_table;
+       struct smu_baco_context *smu_baco = &smu->smu_baco;
 
         if (!table_context->power_play_table)
                 return -EINVAL;
@@ -489,6 +491,12 @@ static int navi10_store_powerplay_table(struct smu_context *smu)
 
         table_context->thermal_controller_type = powerplay_table->thermal_controller_type;
 
+       mutex_lock(&smu_baco->mutex);
+       if (powerplay_table->platform_caps & SMU_11_0_PP_PLATFORM_CAP_BACO ||
+           powerplay_table->platform_caps & SMU_11_0_PP_PLATFORM_CAP_MACO)
+               smu_baco->platform_support = true;
+       mutex_unlock(&smu_baco->mutex);
+
         return 0;
 }
 
diff --git a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
index ff047abd8d92..c6795de7177f 100644
--- a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
+++ b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
@@ -37,6 +37,7 @@
 #include "asic_reg/mp/mp_11_0_offset.h"
 #include "asic_reg/mp/mp_11_0_sh_mask.h"
 #include "asic_reg/nbio/nbio_7_4_offset.h"
+#include "asic_reg/nbio/nbio_7_4_sh_mask.h"
 #include "asic_reg/smuio/smuio_11_0_0_offset.h"
 #include "asic_reg/smuio/smuio_11_0_0_sh_mask.h"
 
@@ -1637,6 +1638,92 @@ static int smu_v11_0_set_azalia_d3_pme(struct smu_context *smu)
         return ret;
 }
 
+static int smu_v11_0_baco_set_armd3_sequence(struct smu_context *smu, enum smu_v11_0_baco_seq baco_seq)
+{
+       return smu_send_smc_msg_with_param(smu, SMU_MSG_ArmD3, baco_seq);
+}
+
+static bool smu_v11_0_baco_is_support(struct smu_context *smu)
+{
+       struct amdgpu_device *adev = smu->adev;
+       struct smu_baco_context *smu_baco = &smu->smu_baco;
+       uint32_t val;
+       bool baco_support;
+
+       mutex_lock(&smu_baco->mutex);
+       baco_support = smu_baco->platform_support;
+       mutex_unlock(&smu_baco->mutex);
+
+       if (!baco_support)
+               return false;
+
+       if (!smu_feature_is_enabled(smu, SMU_FEATURE_BACO_BIT))
+               return false;
+
+       val = RREG32_SOC15(NBIO, 0, mmRCC_BIF_STRAP0);
+       if (val & RCC_BIF_STRAP0__STRAP_PX_CAPABLE_MASK)
+               return true;
+
+       return false;
+}
+
+static enum smu_baco_state smu_v11_0_baco_get_state(struct smu_context *smu)
+{
+       struct smu_baco_context *smu_baco = &smu->smu_baco;
+       enum smu_baco_state baco_state = SMU_BACO_STATE_EXIT;
+
+       mutex_lock(&smu_baco->mutex);
+       baco_state = smu_baco->state;
+       mutex_unlock(&smu_baco->mutex);
+
+       return baco_state;
+}
+
+static int smu_v11_0_baco_set_state(struct smu_context *smu, enum smu_baco_state state)
+{
+
+       struct smu_baco_context *smu_baco = &smu->smu_baco;
+       int ret = 0;
+
+       if (smu_v11_0_baco_get_state(smu) == state)
+               return 0;
+
+       mutex_lock(&smu_baco->mutex);
+
+       if (state == SMU_BACO_STATE_ENTER)
+               ret = smu_send_smc_msg_with_param(smu, SMU_MSG_EnterBaco, BACO_SEQ_BACO);
+       else
+               ret = smu_send_smc_msg(smu, SMU_MSG_ExitBaco);
+       if (ret)
+               goto out;
+
+       smu_baco->state = state;
+out:
+       mutex_unlock(&smu_baco->mutex);
+       return ret;
+}
+
+static int smu_v11_0_baco_reset(struct smu_context *smu)
+{
+       int ret = 0;
+
+       ret = smu_v11_0_baco_set_armd3_sequence(smu, BACO_SEQ_BACO);
+       if (ret)
+               return ret;
+
+       ret = smu_v11_0_baco_set_state(smu, SMU_BACO_STATE_ENTER);
+       if (ret)
+               return ret;
+
+       msleep(10);
+
+       ret = smu_v11_0_baco_set_state(smu, SMU_BACO_STATE_EXIT);
+       if (ret)
+               return ret;
+
+       return ret;
+}
+
 static const struct smu_funcs smu_v11_0_funcs = {
         .init_microcode = smu_v11_0_init_microcode,
         .load_microcode = smu_v11_0_load_microcode,
@@ -1685,6 +1772,10 @@ static const struct smu_funcs smu_v11_0_funcs = {
         .register_irq_handler = smu_v11_0_register_irq_handler,
         .set_azalia_d3_pme = smu_v11_0_set_azalia_d3_pme,
         .get_max_sustainable_clocks_by_dc = smu_v11_0_get_max_sustainable_clocks_by_dc,
+       .baco_is_support= smu_v11_0_baco_is_support,
+       .baco_get_state = smu_v11_0_baco_get_state,
+       .baco_set_state = smu_v11_0_baco_set_state,
+       .baco_reset = smu_v11_0_baco_reset,
 };
 
 void smu_v11_0_set_smu_funcs(struct smu_context *smu)
--
2.22.0

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