[PATCH v7 05/12] amdgpu/vce: use amdgpu_gtt_mgr_alloc_entries

[Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>]

Instead of reserving a number of GTT pages for VCE 1.0 this
commit now uses amdgpu_gtt_mgr_alloc_entries to allocate
the pages when initializing vce 1.0.

While at it remove the "does the VCPU BO already have a
32-bit address" check as suggested by Timur.

This decouples vce init from gtt init.

---
v7: renamed variables (Christian)
---

Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c |  1 -
 drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c     | 18 -----------
 drivers/gpu/drm/amd/amdgpu/amdgpu_vce.h     |  2 +-
 drivers/gpu/drm/amd/amdgpu/vce_v1_0.c       | 33 +++++++++++----------
 4 files changed, 18 insertions(+), 36 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
index dd9b845d5783..f2e89fb4b666 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
@@ -332,7 +332,6 @@ int amdgpu_gtt_mgr_init(struct amdgpu_device *adev, uint64_t gtt_size)
 	ttm_resource_manager_init(man, &adev->mman.bdev, gtt_size);
 
 	start = AMDGPU_GTT_MAX_TRANSFER_SIZE * AMDGPU_GTT_NUM_TRANSFER_WINDOWS;
-	start += amdgpu_vce_required_gart_pages(adev);
 	size = (adev->gmc.gart_size >> PAGE_SHIFT) - start;
 	drm_mm_init(&mgr->mm, start, size);
 	spin_lock_init(&mgr->lock);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
index a7d8f1ce6ac2..eb4a15db2ef2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
@@ -450,24 +450,6 @@ void amdgpu_vce_free_handles(struct amdgpu_device *adev, struct drm_file *filp)
 	}
 }
 
-/**
- * amdgpu_vce_required_gart_pages() - gets number of GART pages required by VCE
- *
- * @adev: amdgpu_device pointer
- *
- * Returns how many GART pages we need before GTT for the VCE IP block.
- * For VCE1, see vce_v1_0_ensure_vcpu_bo_32bit_addr for details.
- * For VCE2+, this is not needed so return zero.
- */
-u32 amdgpu_vce_required_gart_pages(struct amdgpu_device *adev)
-{
-	/* VCE IP block not added yet, so can't use amdgpu_ip_version */
-	if (adev->family == AMDGPU_FAMILY_SI)
-		return 512;
-
-	return 0;
-}
-
 /**
  * amdgpu_vce_get_create_msg - generate a VCE create msg
  *
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.h
index 1c3464ce5037..778c714c8385 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.h
@@ -52,6 +52,7 @@ struct amdgpu_vce {
 	uint32_t                srbm_soft_reset;
 	unsigned		num_rings;
 	uint32_t		keyselect;
+	struct drm_mm_node	gart_node;
 };
 
 int amdgpu_vce_early_init(struct amdgpu_device *adev);
@@ -61,7 +62,6 @@ int amdgpu_vce_entity_init(struct amdgpu_device *adev, struct amdgpu_ring *ring)
 int amdgpu_vce_suspend(struct amdgpu_device *adev);
 int amdgpu_vce_resume(struct amdgpu_device *adev);
 void amdgpu_vce_free_handles(struct amdgpu_device *adev, struct drm_file *filp);
-u32 amdgpu_vce_required_gart_pages(struct amdgpu_device *adev);
 int amdgpu_vce_ring_parse_cs(struct amdgpu_cs_parser *p, struct amdgpu_job *job,
 			     struct amdgpu_ib *ib);
 int amdgpu_vce_ring_parse_cs_vm(struct amdgpu_cs_parser *p,
diff --git a/drivers/gpu/drm/amd/amdgpu/vce_v1_0.c b/drivers/gpu/drm/amd/amdgpu/vce_v1_0.c
index 9ae424618556..5b7b46d242c6 100644
--- a/drivers/gpu/drm/amd/amdgpu/vce_v1_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/vce_v1_0.c
@@ -47,11 +47,6 @@
 #define VCE_V1_0_DATA_SIZE	(7808 * (AMDGPU_MAX_VCE_HANDLES + 1))
 #define VCE_STATUS_VCPU_REPORT_FW_LOADED_MASK	0x02
 
-#define VCE_V1_0_GART_PAGE_START \
-	(AMDGPU_GTT_MAX_TRANSFER_SIZE * AMDGPU_GTT_NUM_TRANSFER_WINDOWS)
-#define VCE_V1_0_GART_ADDR_START \
-	(VCE_V1_0_GART_PAGE_START * AMDGPU_GPU_PAGE_SIZE)
-
 static void vce_v1_0_set_ring_funcs(struct amdgpu_device *adev);
 static void vce_v1_0_set_irq_funcs(struct amdgpu_device *adev);
 
@@ -535,27 +530,29 @@ static int vce_v1_0_early_init(struct amdgpu_ip_block *ip_block)
  */
 static int vce_v1_0_ensure_vcpu_bo_32bit_addr(struct amdgpu_device *adev)
 {
-	u64 gpu_addr = amdgpu_bo_gpu_offset(adev->vce.vcpu_bo);
 	u64 bo_size = amdgpu_bo_size(adev->vce.vcpu_bo);
 	u64 max_vcpu_bo_addr = 0xffffffff - bo_size;
 	u64 num_pages = ALIGN(bo_size, AMDGPU_GPU_PAGE_SIZE) / AMDGPU_GPU_PAGE_SIZE;
 	u64 pa = amdgpu_gmc_vram_pa(adev, adev->vce.vcpu_bo);
 	u64 flags = AMDGPU_PTE_READABLE | AMDGPU_PTE_WRITEABLE | AMDGPU_PTE_VALID;
+	u64 vce_gart_start_offs;
+	int r;
 
-	/*
-	 * Check if the VCPU BO already has a 32-bit address.
-	 * Eg. if MC is configured to put VRAM in the low address range.
-	 */
-	if (gpu_addr <= max_vcpu_bo_addr)
-		return 0;
+	r = amdgpu_gtt_mgr_alloc_entries(&adev->mman.gtt_mgr,
+					 &adev->vce.gart_node, num_pages,
+					 DRM_MM_INSERT_LOW);
+	if (r)
+		return r;
+
+	vce_gart_start_offs = amdgpu_gtt_node_to_byte_offset(&adev->vce.gart_node);
 
 	/* Check if we can map the VCPU BO in GART to a 32-bit address. */
-	if (adev->gmc.gart_start + VCE_V1_0_GART_ADDR_START > max_vcpu_bo_addr)
+	if (adev->gmc.gart_start + vce_gart_start_offs > max_vcpu_bo_addr)
 		return -EINVAL;
 
-	amdgpu_gart_map_vram_range(adev, pa, VCE_V1_0_GART_PAGE_START,
+	amdgpu_gart_map_vram_range(adev, pa, adev->vce.gart_node.start,
 				   num_pages, flags, adev->gart.ptr);
-	adev->vce.gpu_addr = adev->gmc.gart_start + VCE_V1_0_GART_ADDR_START;
+	adev->vce.gpu_addr = adev->gmc.gart_start + vce_gart_start_offs;
 	if (adev->vce.gpu_addr > max_vcpu_bo_addr)
 		return -EINVAL;
 
@@ -610,7 +607,11 @@ static int vce_v1_0_sw_fini(struct amdgpu_ip_block *ip_block)
 	if (r)
 		return r;
 
-	return amdgpu_vce_sw_fini(adev);
+	r = amdgpu_vce_sw_fini(adev);
+
+	amdgpu_gtt_mgr_free_entries(&adev->mman.gtt_mgr, &adev->vce.gart_node);
+
+	return r;
 }
 
 /**
-- 
2.43.0