diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
index febca3130497ea23485f4ad48abf6843ceda8946..4d951a1baefab7bcd347e1b6a14c07454d513843 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
@@ -156,6 +156,8 @@ struct amdgpu_gmc_funcs {
uint64_t addr, uint64_t *flags);
/* get the amount of memory used by the vbios for pre-OS console */
unsigned int (*get_vbios_fb_size)(struct amdgpu_device *adev);
+ /* get the DCC buffer alignment */
+ unsigned int (*get_dcc_alignment)(struct amdgpu_device *adev);
enum amdgpu_memory_partition (*query_mem_partition_mode)(
struct amdgpu_device *adev);
@@ -363,6 +365,10 @@ struct amdgpu_gmc {
(adev)->gmc.gmc_funcs->override_vm_pte_flags \
((adev), (vm), (addr), (pte_flags))
#define amdgpu_gmc_get_vbios_fb_size(adev) (adev)->gmc.gmc_funcs->get_vbios_fb_size((adev))
+#define amdgpu_gmc_get_dcc_alignment(adev) ({ \
+ typeof(adev) _adev = (adev); \
+ _adev->gmc.gmc_funcs->get_dcc_alignment(_adev); \
+})
/**
* amdgpu_gmc_vram_full_visible - Check if full VRAM is visible through the BAR
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
index f91cc149d06c8802e6cac7ba9dd348c1e7349491..b2c94f12da9e792e72d4bcdeeee86236e4ff47be 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
@@ -456,6 +456,7 @@ static int amdgpu_vram_mgr_new(struct ttm_resource_manager *man,
u64 vis_usage = 0, max_bytes, min_block_size;
struct amdgpu_vram_mgr_resource *vres;
u64 size, remaining_size, lpfn, fpfn;
+ unsigned int adjust_dcc_size = 0;
struct drm_buddy *mm = &mgr->mm;
struct drm_buddy_block *block;
unsigned long pages_per_block;
@@ -511,7 +512,18 @@ static int amdgpu_vram_mgr_new(struct ttm_resource_manager *man,
/* Allocate blocks in desired range */
vres->flags |= DRM_BUDDY_RANGE_ALLOCATION;
+ if (adev->gmc.gmc_funcs->get_dcc_alignment)
+ adjust_dcc_size = amdgpu_gmc_get_dcc_alignment(adev);
+
remaining_size = (u64)vres->base.size;
+ if (bo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS && adjust_dcc_size) {
+ unsigned int dcc_size;
+
+ dcc_size = roundup_pow_of_two(vres->base.size + adjust_dcc_size);
+ remaining_size = (u64)dcc_size;
+
+ vres->flags |= DRM_BUDDY_TRIM_DISABLE;
+ }
mutex_lock(&mgr->lock);
while (remaining_size) {
@@ -521,8 +533,11 @@ static int amdgpu_vram_mgr_new(struct ttm_resource_manager *man,
min_block_size = mgr->default_page_size;
size = remaining_size;
- if ((size >= (u64)pages_per_block << PAGE_SHIFT) &&
- !(size & (((u64)pages_per_block << PAGE_SHIFT) - 1)))
+
+ if (bo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS && adjust_dcc_size)
+ min_block_size = size;
+ else if ((size >= (u64)pages_per_block << PAGE_SHIFT) &&
+ !(size & (((u64)pages_per_block << PAGE_SHIFT) - 1)))
min_block_size = (u64)pages_per_block << PAGE_SHIFT;
BUG_ON(min_block_size < mm->chunk_size);
@@ -553,6 +568,22 @@ static int amdgpu_vram_mgr_new(struct ttm_resource_manager *man,
}
mutex_unlock(&mgr->lock);
+ if (bo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS && adjust_dcc_size) {
+ struct drm_buddy_block *dcc_block;
+ unsigned long dcc_start;
+ u64 trim_start;
+
+ dcc_block = amdgpu_vram_mgr_first_block(&vres->blocks);
+ /* Adjust the start address for DCC buffers only */
+ dcc_start =
+ roundup((unsigned long)amdgpu_vram_mgr_block_start(dcc_block),
+ adjust_dcc_size);
+ trim_start = (u64)dcc_start;
+ drm_buddy_block_trim(mm, &trim_start,
+ (u64)vres->base.size,
+ &vres->blocks);
+ }
+
vres->base.start = 0;
size = max_t(u64, amdgpu_vram_mgr_blocks_size(&vres->blocks),
vres->base.size);
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
index fd3ac483760e6d85e87aa4d1c121b358819d24b5..26efce9aa4109f30b08798f55aece979114e9673 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
@@ -542,6 +542,23 @@ static unsigned gmc_v12_0_get_vbios_fb_size(struct amdgpu_device *adev)
return 0;
}
+static unsigned int gmc_v12_0_get_dcc_alignment(struct amdgpu_device *adev)
+{
+ unsigned int max_tex_channel_caches, alignment;
+
+ if (amdgpu_ip_version(adev, GC_HWIP, 0) != IP_VERSION(12, 0, 0) &&
+ amdgpu_ip_version(adev, GC_HWIP, 0) != IP_VERSION(12, 0, 1))
+ return 0;
+
+ max_tex_channel_caches = adev->gfx.config.max_texture_channel_caches;
+ if (is_power_of_2(max_tex_channel_caches))
+ alignment = (unsigned int)(max_tex_channel_caches / SZ_4);
+ else
+ alignment = roundup_pow_of_two(max_tex_channel_caches);
+
+ return (unsigned int)(alignment * max_tex_channel_caches * SZ_1K);
+}
+
static const struct amdgpu_gmc_funcs gmc_v12_0_gmc_funcs = {
.flush_gpu_tlb = gmc_v12_0_flush_gpu_tlb,
.flush_gpu_tlb_pasid = gmc_v12_0_flush_gpu_tlb_pasid,
@@ -551,6 +568,7 @@ static const struct amdgpu_gmc_funcs gmc_v12_0_gmc_funcs = {
.get_vm_pde = gmc_v12_0_get_vm_pde,
.get_vm_pte = gmc_v12_0_get_vm_pte,
.get_vbios_fb_size = gmc_v12_0_get_vbios_fb_size,
+ .get_dcc_alignment = gmc_v12_0_get_dcc_alignment,
};
static void gmc_v12_0_set_gmc_funcs(struct amdgpu_device *adev)