drm/amdgpu: add amdgpu_gmc_pd_addr helper

Add a helper to get the root PD address and remove the workarounds from
the GMC9 code for that.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/Makefile

@@ -51,7 +51,8 @@ amdgpu-y += amdgpu_device.o amdgpu_kms.o \
 	amdgpu_prime.o amdgpu_vm.o amdgpu_ib.o amdgpu_pll.o \
 	amdgpu_ucode.o amdgpu_bo_list.o amdgpu_ctx.o amdgpu_sync.o \
 	amdgpu_gtt_mgr.o amdgpu_vram_mgr.o amdgpu_virt.o amdgpu_atomfirmware.o \
-	amdgpu_vf_error.o amdgpu_sched.o amdgpu_debugfs.o amdgpu_ids.o
+	amdgpu_vf_error.o amdgpu_sched.o amdgpu_debugfs.o amdgpu_ids.o \
+	amdgpu_gmc.o
 
 # add asic specific block
 amdgpu-$(CONFIG_DRM_AMDGPU_CIK)+= cik.o cik_ih.o kv_smc.o kv_dpm.o \

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c

@@ -364,7 +364,6 @@ static int vm_validate_pt_pd_bos(struct amdgpu_vm *vm)
 	struct amdgpu_bo *pd = vm->root.base.bo;
 	struct amdgpu_device *adev = amdgpu_ttm_adev(pd->tbo.bdev);
 	struct amdgpu_vm_parser param;
-	uint64_t addr, flags = AMDGPU_PTE_VALID;
 	int ret;
 
 	param.domain = AMDGPU_GEM_DOMAIN_VRAM;
@@ -383,9 +382,7 @@ static int vm_validate_pt_pd_bos(struct amdgpu_vm *vm)
 		return ret;
 	}
 
-	addr = amdgpu_bo_gpu_offset(vm->root.base.bo);
-	amdgpu_gmc_get_vm_pde(adev, -1, &addr, &flags);
-	vm->pd_phys_addr = addr;
+	vm->pd_phys_addr = amdgpu_gmc_pd_addr(vm->root.base.bo);
 
 	if (vm->use_cpu_for_update) {
 		ret = amdgpu_bo_kmap(pd, NULL);

drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c

@@ -946,7 +946,7 @@ static int amdgpu_cs_vm_handling(struct amdgpu_cs_parser *p)
 	if (r)
 		return r;
 
-	p->job->vm_pd_addr = amdgpu_bo_gpu_offset(vm->root.base.bo);
+	p->job->vm_pd_addr = amdgpu_gmc_pd_addr(vm->root.base.bo);
 
 	if (amdgpu_vm_debug) {
 		/* Invalidate all BOs to test for userspace bugs */

drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2018 Advanced Micro Devices, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ */
+
+#include "amdgpu.h"
+
+/**
+ * amdgpu_gmc_pd_addr - return the address of the root directory
+ *
+ */
+uint64_t amdgpu_gmc_pd_addr(struct amdgpu_bo *bo)
+{
+	struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
+	uint64_t pd_addr;
+
+	pd_addr = amdgpu_bo_gpu_offset(bo);
+	/* TODO: move that into ASIC specific code */
+	if (adev->asic_type >= CHIP_VEGA10) {
+		uint64_t flags = AMDGPU_PTE_VALID;
+
+		amdgpu_gmc_get_vm_pde(adev, -1, &pd_addr, &flags);
+		pd_addr |= flags;
+	}
+	return pd_addr;
+}

drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h

@@ -133,4 +133,6 @@ static inline bool amdgpu_gmc_vram_full_visible(struct amdgpu_gmc *gmc)
 	return (gmc->real_vram_size == gmc->visible_vram_size);
 }
 
+uint64_t amdgpu_gmc_pd_addr(struct amdgpu_bo *bo);
+
 #endif

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c

@@ -2049,7 +2049,7 @@ int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset,
 		return r;
 
 	if (vm_needs_flush) {
-		job->vm_pd_addr = amdgpu_bo_gpu_offset(adev->gart.bo);
+		job->vm_pd_addr = amdgpu_gmc_pd_addr(adev->gart.bo);
 		job->vm_needs_flush = true;
 	}
 	if (resv) {

drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c

@@ -37,12 +37,7 @@ u64 gfxhub_v1_0_get_mc_fb_offset(struct amdgpu_device *adev)
 
 static void gfxhub_v1_0_init_gart_pt_regs(struct amdgpu_device *adev)
 {
-	uint64_t value = amdgpu_bo_gpu_offset(adev->gart.bo);
-
-	BUG_ON(value & (~0x0000FFFFFFFFF000ULL));
-	value -= adev->gmc.vram_start + adev->vm_manager.vram_base_offset;
-	value &= 0x0000FFFFFFFFF000ULL;
-	value |= 0x1; /*valid bit*/
+	uint64_t value = amdgpu_gmc_pd_addr(adev->gart.bo);
 
 	WREG32_SOC15(GC, 0, mmVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32,
 		     lower_32_bits(value));

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

@@ -429,12 +429,8 @@ static uint64_t gmc_v9_0_emit_flush_gpu_tlb(struct amdgpu_ring *ring,
 	struct amdgpu_device *adev = ring->adev;
 	struct amdgpu_vmhub *hub = &adev->vmhub[ring->funcs->vmhub];
 	uint32_t req = gmc_v9_0_get_invalidate_req(vmid);
-	uint64_t flags = AMDGPU_PTE_VALID;
 	unsigned eng = ring->vm_inv_eng;
 
-	amdgpu_gmc_get_vm_pde(adev, -1, &pd_addr, &flags);
-	pd_addr |= flags;
-
 	amdgpu_ring_emit_wreg(ring, hub->ctx0_ptb_addr_lo32 + (2 * vmid),
 			      lower_32_bits(pd_addr));
 

drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c

@@ -47,12 +47,7 @@ u64 mmhub_v1_0_get_fb_location(struct amdgpu_device *adev)
 
 static void mmhub_v1_0_init_gart_pt_regs(struct amdgpu_device *adev)
 {
-	uint64_t value = amdgpu_bo_gpu_offset(adev->gart.bo);
-
-	BUG_ON(value & (~0x0000FFFFFFFFF000ULL));
-	value -= adev->gmc.vram_start + adev->vm_manager.vram_base_offset;
-	value &= 0x0000FFFFFFFFF000ULL;
-	value |= 0x1; /* valid bit */
+	uint64_t value = amdgpu_gmc_pd_addr(adev->gart.bo);
 
 	WREG32_SOC15(MMHUB, 0, mmVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32,
 		     lower_32_bits(value));