[AMD Official Use Only - AMD Internal Distribution Only] Just a typo in patch description
Add a wrapper functions->function Series is Reviewed-by: Asad Kamal <[email protected]> Thanks & Regards Asad -----Original Message----- From: Lazar, Lijo <[email protected]> Sent: Friday, March 27, 2026 1:22 PM To: [email protected] Cc: Zhang, Hawking <[email protected]>; Deucher, Alexander <[email protected]>; Kamal, Asad <[email protected]> Subject: [PATCH 1/3] drm/amd/pm: Add smu vram copy function Add a wrapper functions for copying data/to from vram. This additionally checks for any RAS fatal error. Copy cannot be trusted if any RAS fatal error happened as VRAM becomes inaccessible. Signed-off-by: Lijo Lazar <[email protected]> --- drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c | 12 ++++++++++++ drivers/gpu/drm/amd/pm/swsmu/smu_cmn.h | 3 +++ 2 files changed, 15 insertions(+) diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c b/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c index 7bd8c435466a..006ef585a377 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c @@ -1104,6 +1104,18 @@ int smu_cmn_update_table(struct smu_context *smu, return 0; } +int smu_cmn_vram_cpy(struct smu_context *smu, void *dst, const void *src, + size_t len) +{ + memcpy(dst, src, len); + + /* Don't trust the copy operation if RAS fatal error happened. */ + if (amdgpu_ras_get_fed_status(smu->adev)) + return -EHWPOISON; + + return 0; +} + int smu_cmn_write_watermarks_table(struct smu_context *smu) { void *watermarks_table = smu->smu_table.watermarks_table; diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.h b/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.h index b76e86df5da7..d129907535bd 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.h +++ b/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.h @@ -174,6 +174,9 @@ int smu_cmn_update_table(struct smu_context *smu, void *table_data, bool drv2smu); +int smu_cmn_vram_cpy(struct smu_context *smu, void *dst, + const void *src, size_t len); + int smu_cmn_write_watermarks_table(struct smu_context *smu); int smu_cmn_write_pptable(struct smu_context *smu); -- 2.49.0
