From 62cd91f99e6b1f1384d69ec68b7ff85c5bbc38c5 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Christian=20K=C3=B6nig?= Date: Wed, 18 Jan 2017 13:37:21 +0100 Subject: [PATCH] drm/amdgpu: implement PRT for GFX7 v2 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Enable/disable the handling globally for now and print a warning when we enable it for the first time. v2: set correct register Signed-off-by: Junwei Zhang Signed-off-by: Christian König Reviewed-by: Nicolai Hähnle Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c | 57 +++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c index 8d05e0c4e3d7..4b38d062cbe4 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c @@ -480,6 +480,62 @@ static void gmc_v7_0_set_fault_enable_default(struct amdgpu_device *adev, WREG32(mmVM_CONTEXT1_CNTL, tmp); } +/** + * gmc_v7_0_set_prt - set PRT VM fault + * + * @adev: amdgpu_device pointer + * @enable: enable/disable VM fault handling for PRT + */ +static void gmc_v7_0_set_prt(struct amdgpu_device *adev, bool enable) +{ + uint32_t tmp; + + if (enable && !adev->mc.prt_warning) { + dev_warn(adev->dev, "Disabling VM faults because of PRT request!\n"); + adev->mc.prt_warning = true; + } + + tmp = RREG32(mmVM_PRT_CNTL); + tmp = REG_SET_FIELD(tmp, VM_PRT_CNTL, + CB_DISABLE_READ_FAULT_ON_UNMAPPED_ACCESS, enable); + tmp = REG_SET_FIELD(tmp, VM_PRT_CNTL, + CB_DISABLE_WRITE_FAULT_ON_UNMAPPED_ACCESS, enable); + tmp = REG_SET_FIELD(tmp, VM_PRT_CNTL, + TC_DISABLE_READ_FAULT_ON_UNMAPPED_ACCESS, enable); + tmp = REG_SET_FIELD(tmp, VM_PRT_CNTL, + TC_DISABLE_WRITE_FAULT_ON_UNMAPPED_ACCESS, enable); + tmp = REG_SET_FIELD(tmp, VM_PRT_CNTL, + L2_CACHE_STORE_INVALID_ENTRIES, enable); + tmp = REG_SET_FIELD(tmp, VM_PRT_CNTL, + L1_TLB_STORE_INVALID_ENTRIES, enable); + tmp = REG_SET_FIELD(tmp, VM_PRT_CNTL, + MASK_PDE0_FAULT, enable); + WREG32(mmVM_PRT_CNTL, tmp); + + if (enable) { + uint32_t low = AMDGPU_VA_RESERVED_SIZE >> AMDGPU_GPU_PAGE_SHIFT; + uint32_t high = adev->vm_manager.max_pfn; + + WREG32(mmVM_PRT_APERTURE0_LOW_ADDR, low); + WREG32(mmVM_PRT_APERTURE1_LOW_ADDR, low); + WREG32(mmVM_PRT_APERTURE2_LOW_ADDR, low); + WREG32(mmVM_PRT_APERTURE3_LOW_ADDR, low); + WREG32(mmVM_PRT_APERTURE0_HIGH_ADDR, high); + WREG32(mmVM_PRT_APERTURE1_HIGH_ADDR, high); + WREG32(mmVM_PRT_APERTURE2_HIGH_ADDR, high); + WREG32(mmVM_PRT_APERTURE3_HIGH_ADDR, high); + } else { + WREG32(mmVM_PRT_APERTURE0_LOW_ADDR, 0xfffffff); + WREG32(mmVM_PRT_APERTURE1_LOW_ADDR, 0xfffffff); + WREG32(mmVM_PRT_APERTURE2_LOW_ADDR, 0xfffffff); + WREG32(mmVM_PRT_APERTURE3_LOW_ADDR, 0xfffffff); + WREG32(mmVM_PRT_APERTURE0_HIGH_ADDR, 0x0); + WREG32(mmVM_PRT_APERTURE1_HIGH_ADDR, 0x0); + WREG32(mmVM_PRT_APERTURE2_HIGH_ADDR, 0x0); + WREG32(mmVM_PRT_APERTURE3_HIGH_ADDR, 0x0); + } +} + /** * gmc_v7_0_gart_enable - gart enable * @@ -1259,6 +1315,7 @@ static const struct amd_ip_funcs gmc_v7_0_ip_funcs = { static const struct amdgpu_gart_funcs gmc_v7_0_gart_funcs = { .flush_gpu_tlb = gmc_v7_0_gart_flush_gpu_tlb, .set_pte_pde = gmc_v7_0_gart_set_pte_pde, + .set_prt = gmc_v7_0_set_prt, }; static const struct amdgpu_irq_src_funcs gmc_v7_0_irq_funcs = { -- 2.20.1