From: Lijo Lazar Date: Fri, 7 Mar 2025 05:41:23 +0000 (+0530) Subject: drm/amd/pm: Add debug bit for smu pool allocation X-Git-Tag: v6.15-rc1~120^2~1^2~34 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ab6893402aeeaea8500d6bc86efccc2143c14df1;p=thirdparty%2Flinux.git drm/amd/pm: Add debug bit for smu pool allocation In certain cases, it's desirable to avoid PMFW log transactions to system memory. Add a mask bit to decide whether to allocate smu pool in device memory or system memory. Signed-off-by: Lijo Lazar Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index f62456da0ba5b..e3767555e4410 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -139,6 +139,7 @@ enum AMDGPU_DEBUG_MASK { AMDGPU_DEBUG_ENABLE_RAS_ACA = BIT(4), AMDGPU_DEBUG_ENABLE_EXP_RESETS = BIT(5), AMDGPU_DEBUG_DISABLE_GPU_RING_RESET = BIT(6), + AMDGPU_DEBUG_SMU_POOL = BIT(7), }; unsigned int amdgpu_vram_limit = UINT_MAX; @@ -2238,6 +2239,10 @@ static void amdgpu_init_debug_options(struct amdgpu_device *adev) pr_info("debug: ring reset disabled\n"); adev->debug_disable_gpu_ring_reset = true; } + if (amdgpu_debug_mask & AMDGPU_DEBUG_SMU_POOL) { + pr_info("debug: use vram for smu pool\n"); + adev->pm.smu_debug_mask |= SMU_DEBUG_POOL_USE_VRAM; + } } static unsigned long amdgpu_fix_asic_type(struct pci_dev *pdev, unsigned long flags) diff --git a/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h b/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h index 9fb26b5c8ae7a..f93d287dbf137 100644 --- a/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h +++ b/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h @@ -295,7 +295,8 @@ enum ip_power_state { }; /* Used to mask smu debug modes */ -#define SMU_DEBUG_HALT_ON_ERROR 0x1 +#define SMU_DEBUG_HALT_ON_ERROR BIT(0) +#define SMU_DEBUG_POOL_USE_VRAM BIT(1) #define MAX_SMU_I2C_BUSES 2 diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c index d1aa6075c4f41..033c3229b555f 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c +++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c @@ -1027,7 +1027,10 @@ static int smu_alloc_memory_pool(struct smu_context *smu) memory_pool->size = pool_size; memory_pool->align = PAGE_SIZE; - memory_pool->domain = AMDGPU_GEM_DOMAIN_GTT; + memory_pool->domain = + (adev->pm.smu_debug_mask & SMU_DEBUG_POOL_USE_VRAM) ? + AMDGPU_GEM_DOMAIN_VRAM : + AMDGPU_GEM_DOMAIN_GTT; switch (pool_size) { case SMU_MEMORY_POOL_SIZE_256_MB: