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ac/info: add ac_fill_memory_info

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Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40656>
This commit is contained in:
Pierre-Eric Pelloux-Prayer 2026-03-26 09:52:13 +01:00 • committed by Marge Bot
parent f9c60f3699
commit 2bc0e5437d
2 changed files with 30 additions and 24 deletions
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51
src/amd/common/ac_gpu_info.c
View file

@ -424,6 +424,32 @@ ac_fill_tiling_info(struct radeon_info *info, const struct amdgpu_gpu_info *amdi
sizeof(amdinfo->gb_macro_tile_mode));
}
void
ac_fill_memory_info(struct radeon_info *info, const struct drm_amdgpu_info_device *device_info,
const struct drm_amdgpu_memory_info *meminfo)
{
/* Note: usable_heap_size values can be random and can't be relied on. */
info->gart_size_kb = DIV_ROUND_UP(meminfo->gtt.total_heap_size, 1024);
info->vram_size_kb = DIV_ROUND_UP(fix_vram_size(meminfo->vram.total_heap_size), 1024);
info->vram_vis_size_kb = DIV_ROUND_UP(meminfo->cpu_accessible_vram.total_heap_size, 1024);
/* Add some margin of error, though this shouldn't be needed in theory. */
info->all_vram_visible = info->vram_size_kb * 0.9 < info->vram_vis_size_kb;
info->virtual_address_max = device_info->virtual_address_max;
/* Set which chips have dedicated VRAM. */
info->has_dedicated_vram = !(device_info->ids_flags & AMDGPU_IDS_FLAGS_FUSION);
/* The kernel can split large buffers in VRAM but not in GTT, so large
* allocations can fail or cause buffer movement failures in the kernel.
*/
if (info->has_dedicated_vram)
info->max_heap_size_kb = info->vram_size_kb;
else
info->max_heap_size_kb = info->gart_size_kb;
info->vram_type = device_info->vram_type;
info->memory_bus_width = device_info->vram_bit_width;
}
enum ac_query_gpu_info_result
ac_query_gpu_info(int fd, void *dev_p, struct radeon_info *info,
bool require_pci_bus_info)
@ -630,22 +656,13 @@ ac_query_gpu_info(int fd, void *dev_p, struct radeon_info *info,
fprintf(stderr, "amdgpu: ac_drm_query_info(memory) failed.\n");
return AC_QUERY_GPU_INFO_FAIL;
}
/* Note: usable_heap_size values can be random and can't be relied on. */
info->gart_size_kb = DIV_ROUND_UP(meminfo.gtt.total_heap_size, 1024);
info->vram_size_kb = DIV_ROUND_UP(fix_vram_size(meminfo.vram.total_heap_size), 1024);
info->vram_vis_size_kb = DIV_ROUND_UP(meminfo.cpu_accessible_vram.total_heap_size, 1024);
ac_fill_memory_info(info, &device_info, &meminfo);
ac_drm_query_video_caps_info(dev, AMDGPU_INFO_VIDEO_CAPS_DECODE,
sizeof(info->dec_caps), &(info->dec_caps));
ac_drm_query_video_caps_info(dev, AMDGPU_INFO_VIDEO_CAPS_ENCODE,
sizeof(info->enc_caps), &(info->enc_caps));
/* Add some margin of error, though this shouldn't be needed in theory. */
info->all_vram_visible = info->vram_size_kb * 0.9 < info->vram_vis_size_kb;
info->virtual_address_max = device_info.virtual_address_max;
/* Set chip identification. */
info->pci_id = device_info.device_id;
info->pci_rev_id = device_info.pci_rev;
@ -874,20 +891,6 @@ ac_query_gpu_info(int fd, void *dev_p, struct radeon_info *info,
info->ip[AMD_IP_VPE].ver_minor,
info->ip[AMD_IP_VPE].ver_rev);
/* Set which chips have dedicated VRAM. */
info->has_dedicated_vram = !(device_info.ids_flags & AMDGPU_IDS_FLAGS_FUSION);
/* The kernel can split large buffers in VRAM but not in GTT, so large
* allocations can fail or cause buffer movement failures in the kernel.
*/
if (info->has_dedicated_vram)
info->max_heap_size_kb = info->vram_size_kb;
else
info->max_heap_size_kb = info->gart_size_kb;
info->vram_type = device_info.vram_type;
info->memory_bus_width = device_info.vram_bit_width;
/* Set which chips have uncached device memory. */
info->has_l2_uncached = info->gfx_level >= GFX9;

3
src/amd/common/ac_gpu_info.h
View file

@ -89,6 +89,7 @@ extern "C" {
struct amdgpu_gpu_info;
struct drm_amdgpu_info_device;
struct drm_amdgpu_memory_info;
struct amd_ip_info {
uint8_t ver_major;
@ -488,6 +489,8 @@ enum ac_query_gpu_info_result ac_query_gpu_info(int fd, void *dev_p, struct rade
bool require_pci_bus_info);
void ac_fill_compiler_info(struct radeon_info *info, struct drm_amdgpu_info_device *device_info);
void ac_fill_tiling_info(struct radeon_info *info, const struct amdgpu_gpu_info *amdinfo);
void ac_fill_memory_info(struct radeon_info *info, const struct drm_amdgpu_info_device *device_info,
const struct drm_amdgpu_memory_info *meminfo);
void ac_compute_driver_uuid(char *uuid, size_t size);