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Commit cfa32556 authored by Junwei Zhang's avatar Junwei Zhang Committed by Alex Deucher
Browse files

drm/amd/amdgpu: add info about vram and gtt max allocation size 



Signed-off-by: default avatarJunwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 9f6163e7

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

+18 −0
Original line number Diff line number Diff line
@@ -421,6 +421,24 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file 
				    min((size_t)size, sizeof(vram_gtt_total)))

				    ? -EFAULT : 0;

	}

	case AMDGPU_INFO_VRAM_GTT_MAX: {

		struct drm_amdgpu_info_vram_gtt_max vram_gtt_max;

		u64 max_size;



		max_size = adev->mc.real_vram_size - adev->vram_pin_size;

		vram_gtt_max.vram_max_size = max_size * 3 / 4;



		max_size = adev->mc.visible_vram_size - (adev->vram_pin_size -

				adev->invisible_pin_size);

		vram_gtt_max.vram_cpu_accessible_max_size = max_size * 3 / 4;



		max_size = adev->mc.gtt_size - adev->gart_pin_size;

		vram_gtt_max.gtt_max_size = max_size * 3 / 4;



		return copy_to_user(out, &vram_gtt_max,

				    min((size_t)size, sizeof(vram_gtt_max)))

				    ? -EFAULT : 0;

	}

	case AMDGPU_INFO_READ_MMR_REG: {

		unsigned n, alloc_size;

		uint32_t *regs;

include/uapi/drm/amdgpu_drm.h

+8 −0
Original line number Diff line number Diff line
@@ -489,6 +489,8 @@ struct drm_amdgpu_cs_chunk_data { 
#define AMDGPU_INFO_NUM_EVICTIONS		0x18

/* Query the total size of VRAM and GTT domains */

#define AMDGPU_INFO_VRAM_GTT_TOTAL		0x19

/* Query the max allocation size of VRAM and GTT domains */

#define AMDGPU_INFO_VRAM_GTT_MAX		0x1a



#define AMDGPU_INFO_MMR_SE_INDEX_SHIFT	0

#define AMDGPU_INFO_MMR_SE_INDEX_MASK	0xff
@@ -580,6 +582,12 @@ struct drm_amdgpu_info_vram_gtt_total { 
	__u64 gtt_total_size;

};



struct drm_amdgpu_info_vram_gtt_max {

	__u64 vram_max_size;

	__u64 vram_cpu_accessible_max_size;

	__u64 gtt_max_size;

};



struct drm_amdgpu_info_firmware {

	__u32 ver;

	__u32 feature;