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| author | Alex Sierra <alex.sierra@amd.com> | 2019-12-19 23:40:19 -0600 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-01-16 13:34:27 -0500 |
| commit | ea930000a6dcd161346c957545f7e67b3f77ec06 (patch) | |
| tree | ea8fab2ff16ba75dee40a4fb49ed5b9942a5dec6 /drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | |
| parent | 4f01f1e58e073d35d49ca15460d00671c6244323 (diff) | |
| download | linux-ea930000a6dcd161346c957545f7e67b3f77ec06.tar.bz2 | |
drm/amdgpu: export function to flush TLB via pasid
This can be used directly from amdgpu and amdkfd to invalidate
TLB through pasid.
It supports gmc v7, v8, v9 and v10.
Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c index b83c8d745f42..40a496804356 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -38,10 +38,12 @@ #include "dce/dce_12_0_sh_mask.h" #include "vega10_enum.h" #include "mmhub/mmhub_1_0_offset.h" +#include "athub/athub_1_0_sh_mask.h" #include "athub/athub_1_0_offset.h" #include "oss/osssys_4_0_offset.h" #include "soc15.h" +#include "soc15d.h" #include "soc15_common.h" #include "umc/umc_6_0_sh_mask.h" @@ -441,6 +443,18 @@ static bool gmc_v9_0_use_invalidate_semaphore(struct amdgpu_device *adev, adev->pdev->device == 0x15d8))); } +static bool gmc_v9_0_get_atc_vmid_pasid_mapping_info(struct amdgpu_device *adev, + uint8_t vmid, uint16_t *p_pasid) +{ + uint32_t value; + + value = RREG32(SOC15_REG_OFFSET(ATHUB, 0, mmATC_VMID0_PASID_MAPPING) + + vmid); + *p_pasid = value & ATC_VMID0_PASID_MAPPING__PASID_MASK; + + return !!(value & ATC_VMID0_PASID_MAPPING__VALID_MASK); +} + /* * GART * VMID 0 is the physical GPU addresses as used by the kernel. @@ -539,6 +553,67 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid, DRM_ERROR("Timeout waiting for VM flush ACK!\n"); } +/** + * gmc_v9_0_flush_gpu_tlb_pasid - tlb flush via pasid + * + * @adev: amdgpu_device pointer + * @pasid: pasid to be flush + * + * Flush the TLB for the requested pasid. + */ +static int gmc_v9_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev, + uint16_t pasid, uint32_t flush_type, + bool all_hub) +{ + int vmid, i; + signed long r; + uint32_t seq; + uint16_t queried_pasid; + bool ret; + struct amdgpu_ring *ring = &adev->gfx.kiq.ring; + struct amdgpu_kiq *kiq = &adev->gfx.kiq; + + if (adev->in_gpu_reset) + return -EIO; + + if (ring->sched.ready) { + spin_lock(&adev->gfx.kiq.ring_lock); + amdgpu_ring_alloc(ring, kiq->pmf->invalidate_tlbs_size); + kiq->pmf->kiq_invalidate_tlbs(ring, + pasid, flush_type, all_hub); + amdgpu_fence_emit_polling(ring, &seq); + amdgpu_ring_commit(ring); + spin_unlock(&adev->gfx.kiq.ring_lock); + r = amdgpu_fence_wait_polling(ring, seq, adev->usec_timeout); + if (r < 1) { + DRM_ERROR("wait for kiq fence error: %ld.\n", r); + return -ETIME; + } + + return 0; + } + + for (vmid = 1; vmid < 16; vmid++) { + + ret = gmc_v9_0_get_atc_vmid_pasid_mapping_info(adev, vmid, + &queried_pasid); + if (ret && queried_pasid == pasid) { + if (all_hub) { + for (i = 0; i < adev->num_vmhubs; i++) + gmc_v9_0_flush_gpu_tlb(adev, vmid, + i, 0); + } else { + gmc_v9_0_flush_gpu_tlb(adev, vmid, + AMDGPU_GFXHUB_0, 0); + } + break; + } + } + + return 0; + +} + static uint64_t gmc_v9_0_emit_flush_gpu_tlb(struct amdgpu_ring *ring, unsigned vmid, uint64_t pd_addr) { @@ -700,6 +775,7 @@ static void gmc_v9_0_get_vm_pte(struct amdgpu_device *adev, static const struct amdgpu_gmc_funcs gmc_v9_0_gmc_funcs = { .flush_gpu_tlb = gmc_v9_0_flush_gpu_tlb, + .flush_gpu_tlb_pasid = gmc_v9_0_flush_gpu_tlb_pasid, .emit_flush_gpu_tlb = gmc_v9_0_emit_flush_gpu_tlb, .emit_pasid_mapping = gmc_v9_0_emit_pasid_mapping, .map_mtype = gmc_v9_0_map_mtype, |