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 <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 5 +++++ drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h | 3 ++- drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 5 ++++- 3 files changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index b161daa90019..22775c204632 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -140,6 +140,7 @@ 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; @@ -2231,6 +2232,10 @@ 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 9fb26b5c8ae7..f93d287dbf13 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 54a31d586d55..f6def50ba22d 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: -- 2.25.1
