From fb4c52db69746ee0429cedee562ce861f5392e73 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Christian=20K=C3=B6nig?= Date: Fri, 1 Sep 2023 14:44:38 +0200 Subject: [PATCH] drm/amdgpu: fix and cleanup gmc_v7_0_flush_gpu_tlb_pasid MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Testing for reset is pointless since the reset can start right after the test. Grab the reset semaphore instead. The same PASID can be used by more than once VMID, build a mask of VMIDs to invalidate instead of just restting the first one. Signed-off-by: Christian König Reviewed-by: Alex Deucher Reviewed-by: Shashank Sharma Acked-by: Felix Kuehling Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c index 6a6929ac27482..0219a4e00bb7b 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c @@ -33,6 +33,7 @@ #include "amdgpu_ucode.h" #include "amdgpu_amdkfd.h" #include "amdgpu_gem.h" +#include "amdgpu_reset.h" #include "bif/bif_4_1_d.h" #include "bif/bif_4_1_sh_mask.h" @@ -426,23 +427,23 @@ static int gmc_v7_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev, uint16_t pasid, uint32_t flush_type, bool all_hub, uint32_t inst) { + u32 mask = 0x0; int vmid; - unsigned int tmp; - if (amdgpu_in_reset(adev)) - return -EIO; + if (!down_read_trylock(&adev->reset_domain->sem)) + return 0; for (vmid = 1; vmid < 16; vmid++) { + u32 tmp = RREG32(mmATC_VMID0_PASID_MAPPING + vmid); - tmp = RREG32(mmATC_VMID0_PASID_MAPPING + vmid); if ((tmp & ATC_VMID0_PASID_MAPPING__VALID_MASK) && - (tmp & ATC_VMID0_PASID_MAPPING__PASID_MASK) == pasid) { - WREG32(mmVM_INVALIDATE_REQUEST, 1 << vmid); - RREG32(mmVM_INVALIDATE_RESPONSE); - break; - } + (tmp & ATC_VMID0_PASID_MAPPING__PASID_MASK) == pasid) + mask |= 1 << vmid; } + WREG32(mmVM_INVALIDATE_REQUEST, mask); + RREG32(mmVM_INVALIDATE_RESPONSE); + up_read(&adev->reset_domain->sem); return 0; } -- 2.39.5