From: Christian König Date: Fri, 27 Jan 2017 10:56:05 +0000 (+0100) Subject: drm/amdgpu: implement PRT for GFX6 v2 X-Git-Tag: v4.14-rc1~674^2~26^2~282 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f7c35abe933c2ee34008c7415578611adcf3fcc6;p=platform%2Fkernel%2Flinux-rpi.git drm/amdgpu: implement PRT for GFX6 v2 Enable/disable the handling globally for now and print a warning when we enable it for the first time. v2: write to the correct register, adjust bits to that hw generation v3: fix compilation, add the missing register bit definitions Signed-off-by: Christian König Reviewed-by: Nicolai Hähnle Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index b921253..3edc871 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -569,6 +569,7 @@ struct amdgpu_mc { uint32_t vram_type; uint32_t srbm_soft_reset; struct amdgpu_mode_mc_save save; + bool prt_warning; }; /* diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c index 0635829..3328428 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c @@ -400,6 +400,60 @@ static void gmc_v6_0_set_fault_enable_default(struct amdgpu_device *adev, WREG32(mmVM_CONTEXT1_CNTL, tmp); } + /** + + * gmc_v8_0_set_prt - set PRT VM fault + + * + + * @adev: amdgpu_device pointer + + * @enable: enable/disable VM fault handling for PRT + +*/ +static void gmc_v6_0_set_prt(struct amdgpu_device *adev, bool enable) +{ + u32 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_FAULT_ON_UNMAPPED_ACCESS, + enable); + tmp = REG_SET_FIELD(tmp, VM_PRT_CNTL, + TC_DISABLE_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); + 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); + } +} + static int gmc_v6_0_gart_enable(struct amdgpu_device *adev) { int r, i; @@ -1082,6 +1136,7 @@ static const struct amd_ip_funcs gmc_v6_0_ip_funcs = { static const struct amdgpu_gart_funcs gmc_v6_0_gart_funcs = { .flush_gpu_tlb = gmc_v6_0_gart_flush_gpu_tlb, .set_pte_pde = gmc_v6_0_gart_set_pte_pde, + .set_prt = gmc_v6_0_set_prt, }; static const struct amdgpu_irq_src_funcs gmc_v6_0_irq_funcs = { diff --git a/drivers/gpu/drm/amd/include/asic_reg/gmc/gmc_6_0_sh_mask.h b/drivers/gpu/drm/amd/include/asic_reg/gmc/gmc_6_0_sh_mask.h index 0f6c6c8..7155312 100644 --- a/drivers/gpu/drm/amd/include/asic_reg/gmc/gmc_6_0_sh_mask.h +++ b/drivers/gpu/drm/amd/include/asic_reg/gmc/gmc_6_0_sh_mask.h @@ -11891,5 +11891,9 @@ #define VM_PRT_CNTL__L1_TLB_STORE_INVALID_ENTRIES__SHIFT 0x00000003 #define VM_PRT_CNTL__L2_CACHE_STORE_INVALID_ENTRIES_MASK 0x00000004L #define VM_PRT_CNTL__L2_CACHE_STORE_INVALID_ENTRIES__SHIFT 0x00000002 +#define VM_PRT_CNTL__CB_DISABLE_FAULT_ON_UNMAPPED_ACCESS_MASK 0x00000001L +#define VM_PRT_CNTL__CB_DISABLE_FAULT_ON_UNMAPPED_ACCESS__SHIFT 0x00000000 +#define VM_PRT_CNTL__TC_DISABLE_FAULT_ON_UNMAPPED_ACCESS_MASK 0x00000002L +#define VM_PRT_CNTL__TC_DISABLE_FAULT_ON_UNMAPPED_ACCESS__SHIFT 0x00000001 #endif