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drm/amdgpu: add support for new GFX shadow size query

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Use the new callback to fetch the data.  Return an error if
not supported.  UMDs should use this query to check whether
shadow buffers are supported and if so what size they
should be.

v2: return an error rather than a zerod structure.
v3: drop GDS, move into dev_info structure.  Data will be
    0 if not supported.
v4: drop local variable r

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher
2023-03-09 15:28:25 -05:00
parent 02527099dd
commit 1ba91b54a9
1 changed files with 13 additions and 0 deletions
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13
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
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@@ -876,6 +876,19 @@ int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
dev_info->gl2c_cache_size = adev->gfx.config.gc_gl2c_per_gpu;
dev_info->mall_size = adev->gmc.mall_size;
if (adev->gfx.funcs->get_gfx_shadow_info) {
struct amdgpu_gfx_shadow_info shadow_info;
ret = amdgpu_gfx_get_gfx_shadow_info(adev, &shadow_info);
if (!ret) {
dev_info->shadow_size = shadow_info.shadow_size;
dev_info->shadow_alignment = shadow_info.shadow_alignment;
dev_info->csa_size = shadow_info.csa_size;
dev_info->csa_alignment = shadow_info.csa_alignment;
}
}
ret = copy_to_user(out, dev_info,
min((size_t)size, sizeof(*dev_info))) ? -EFAULT : 0;
kfree(dev_info);