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author | Andrey Grodzovsky <andrey.grodzovsky@amd.com> | 2021-09-17 17:02:52 -0400 |
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committer | Alex Deucher <alexander.deucher@amd.com> | 2021-11-22 14:58:54 -0500 |
commit | db5b5c679e6cad2bb147337af6c378d278231b45 (patch) | |
tree | 687f99fe95e0eecb469f350c7afbb954843a5ed5 /drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c | |
parent | drm/amd/pm: Add STB accessors interface (diff) | |
download | linux-dev-db5b5c679e6cad2bb147337af6c378d278231b45.tar.xz linux-dev-db5b5c679e6cad2bb147337af6c378d278231b45.zip |
drm/amd/pm: Add STB support in sienna_cichlid
Add STB implementation for sienna_cichlid
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Luben Tuikov <luben.tuikov@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c')
-rw-r--r-- | drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c index b0bb389185d5..9d7b4fade301 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c @@ -80,6 +80,9 @@ (*member) = (smu->smu_table.driver_pptable + offsetof(PPTable_t, field));\ } while(0) +/* STB FIFO depth is in 64bit units */ +#define SIENNA_CICHLID_STB_DEPTH_UNIT_BYTES 8 + static int get_table_size(struct smu_context *smu) { if (smu->adev->ip_versions[MP1_HWIP][0] == IP_VERSION(11, 0, 13)) @@ -650,6 +653,8 @@ static int sienna_cichlid_allocate_dpm_context(struct smu_context *smu) return 0; } +static void sienna_cichlid_stb_init(struct smu_context *smu); + static int sienna_cichlid_init_smc_tables(struct smu_context *smu) { int ret = 0; @@ -662,6 +667,8 @@ static int sienna_cichlid_init_smc_tables(struct smu_context *smu) if (ret) return ret; + sienna_cichlid_stb_init(smu); + return smu_v11_0_init_smc_tables(smu); } @@ -3793,6 +3800,53 @@ static int sienna_cichlid_set_mp1_state(struct smu_context *smu, return ret; } +static void sienna_cichlid_stb_init(struct smu_context *smu) +{ + struct amdgpu_device *adev = smu->adev; + uint32_t reg; + + reg = RREG32_PCIE(MP1_Public | smnMP1_PMI_3_START); + smu->stb_context.enabled = REG_GET_FIELD(reg, MP1_PMI_3_START, ENABLE); + + /* STB is disabled */ + if (!smu->stb_context.enabled) + return; + + spin_lock_init(&smu->stb_context.lock); + + /* STB buffer size in bytes as function of FIFO depth */ + reg = RREG32_PCIE(MP1_Public | smnMP1_PMI_3_FIFO); + smu->stb_context.stb_buf_size = 1 << REG_GET_FIELD(reg, MP1_PMI_3_FIFO, DEPTH); + smu->stb_context.stb_buf_size *= SIENNA_CICHLID_STB_DEPTH_UNIT_BYTES; + + dev_info(smu->adev->dev, "STB initialized to %d entries", + smu->stb_context.stb_buf_size / SIENNA_CICHLID_STB_DEPTH_UNIT_BYTES); + +} + +int sienna_cichlid_stb_get_data_direct(struct smu_context *smu, + void *buf, + uint32_t size) +{ + uint32_t *p = buf; + struct amdgpu_device *adev = smu->adev; + + /* No need to disable interrupts for now as we don't lock it yet from ISR */ + spin_lock(&smu->stb_context.lock); + + /* + * Read the STB FIFO in units of 32bit since this is the accessor window + * (register width) we have. + */ + buf = ((char *) buf) + size; + while ((void *)p < buf) + *p++ = cpu_to_le32(RREG32_PCIE(MP1_Public | smnMP1_PMI_3)); + + spin_unlock(&smu->stb_context.lock); + + return 0; +} + static const struct pptable_funcs sienna_cichlid_ppt_funcs = { .get_allowed_feature_mask = sienna_cichlid_get_allowed_feature_mask, .set_default_dpm_table = sienna_cichlid_set_default_dpm_table, @@ -3882,6 +3936,7 @@ static const struct pptable_funcs sienna_cichlid_ppt_funcs = { .interrupt_work = smu_v11_0_interrupt_work, .gpo_control = sienna_cichlid_gpo_control, .set_mp1_state = sienna_cichlid_set_mp1_state, + .stb_collect_info = sienna_cichlid_stb_get_data_direct, }; void sienna_cichlid_set_ppt_funcs(struct smu_context *smu) |