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drm/amdgpu: Add stolen vga reserve-region

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Use reserve region helpers for initializing/reserving stolen vga region.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lijo Lazar 2026-03-25 17:00:31 +05:30 committed by Alex Deucher
parent c9042a4dd6
commit 9bb16dabb0
4 changed files with 10 additions and 12 deletions
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8
drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
View File

@ -1099,10 +1099,12 @@ void amdgpu_gmc_get_vbios_allocations(struct amdgpu_device *adev)
size = 0;
if (size > AMDGPU_VBIOS_VGA_ALLOCATION) {
adev->mman.stolen_vga_size = AMDGPU_VBIOS_VGA_ALLOCATION;
adev->mman.stolen_extended_size = size - adev->mman.stolen_vga_size;
amdgpu_ttm_init_vram_resv(adev, AMDGPU_RESV_STOLEN_VGA,
0, AMDGPU_VBIOS_VGA_ALLOCATION, false);
adev->mman.stolen_extended_size = size - AMDGPU_VBIOS_VGA_ALLOCATION;
} else {
adev->mman.stolen_vga_size = size;
amdgpu_ttm_init_vram_resv(adev, AMDGPU_RESV_STOLEN_VGA,
0, size, false);
adev->mman.stolen_extended_size = 0;
}
}

10
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
View File

@ -2206,14 +2206,12 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
* and driver.
*/
if (!adev->gmc.is_app_apu) {
r = amdgpu_bo_create_kernel_at(adev, 0,
adev->mman.stolen_vga_size,
&adev->mman.stolen_vga_memory,
NULL);
r = amdgpu_ttm_mark_vram_reserved(adev, AMDGPU_RESV_STOLEN_VGA);
if (r)
return r;
r = amdgpu_bo_create_kernel_at(adev, adev->mman.stolen_vga_size,
r = amdgpu_bo_create_kernel_at(adev,
adev->mman.resv_region[AMDGPU_RESV_STOLEN_VGA].size,
adev->mman.stolen_extended_size,
&adev->mman.stolen_extended_memory,
NULL);
@ -2342,7 +2340,7 @@ void amdgpu_ttm_fini(struct amdgpu_device *adev)
amdgpu_ttm_training_reserve_vram_fini(adev);
/* return the stolen vga memory back to VRAM */
if (!adev->gmc.is_app_apu) {
amdgpu_bo_free_kernel(&adev->mman.stolen_vga_memory, NULL, NULL);
amdgpu_ttm_unmark_vram_reserved(adev, AMDGPU_RESV_STOLEN_VGA);
amdgpu_bo_free_kernel(&adev->mman.stolen_extended_memory, NULL, NULL);
/* return the FW reserved memory back to VRAM */
amdgpu_bo_free_kernel(&adev->mman.fw_reserved_memory, NULL,

2
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
View File

@ -103,8 +103,6 @@ struct amdgpu_mman {
struct amdgpu_gtt_mgr gtt_mgr;
struct ttm_resource_manager preempt_mgr;
uint64_t stolen_vga_size;
struct amdgpu_bo *stolen_vga_memory;
uint64_t stolen_extended_size;
struct amdgpu_bo *stolen_extended_memory;
bool keep_stolen_vga_memory;

2
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@ -11199,7 +11199,7 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
if (!adev->in_suspend) {
/* return the stolen vga memory back to VRAM */
if (!adev->mman.keep_stolen_vga_memory)
amdgpu_bo_free_kernel(&adev->mman.stolen_vga_memory, NULL, NULL);
amdgpu_ttm_unmark_vram_reserved(adev, AMDGPU_RESV_STOLEN_VGA);
amdgpu_bo_free_kernel(&adev->mman.stolen_extended_memory, NULL, NULL);
}