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drm/amdgpu/discovery: add a function to get the mall_size

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Add a function to fetch the mall size from the IP discovery
table. Properly handle harvest configurations where more
or less cache may be available.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2022-03-29 17:23:49 -04:00
parent 478d338bb0
commit 24681cb50b
2 changed files with 47 additions and 0 deletions
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46
drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
View File

@ -1250,6 +1250,52 @@ int amdgpu_discovery_get_gfx_info(struct amdgpu_device *adev)
return 0;
}
union mall_info {
struct mall_info_v1_0 v1;
};
int amdgpu_discovery_get_mall_info(struct amdgpu_device *adev)
{
struct binary_header *bhdr;
union mall_info *mall_info;
u32 u, mall_size_per_umc, m_s_present, half_use;
u64 mall_size;
if (!adev->mman.discovery_bin) {
DRM_ERROR("ip discovery uninitialized\n");
return -EINVAL;
}
bhdr = (struct binary_header *)adev->mman.discovery_bin;
mall_info = (union mall_info *)(adev->mman.discovery_bin +
le16_to_cpu(bhdr->table_list[MALL_INFO].offset));
switch (le16_to_cpu(mall_info->v1.header.version_major)) {
case 1:
mall_size = 0;
mall_size_per_umc = le32_to_cpu(mall_info->v1.mall_size_per_m);
m_s_present = le32_to_cpu(mall_info->v1.m_s_present);
half_use = le32_to_cpu(mall_info->v1.m_half_use);
for (u = 0; u < adev->gmc.num_umc; u++) {
if (m_s_present & (1 << u))
mall_size += mall_size_per_umc * 2;
else if (half_use & (1 << u))
mall_size += mall_size_per_umc / 2;
else
mall_size += mall_size_per_umc;
}
adev->gmc.mall_size = mall_size;
break;
default:
dev_err(adev->dev,
"Unhandled MALL info table %d.%d\n",
le16_to_cpu(mall_info->v1.header.version_major),
le16_to_cpu(mall_info->v1.header.version_minor));
return -EINVAL;
}
return 0;
}
static int amdgpu_discovery_set_common_ip_blocks(struct amdgpu_device *adev)
{
/* what IP to use for this? */

1
drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.h
View File

@ -34,6 +34,7 @@ int amdgpu_discovery_get_ip_version(struct amdgpu_device *adev, int hw_id, int n
int *major, int *minor, int *revision);
int amdgpu_discovery_get_gfx_info(struct amdgpu_device *adev);
int amdgpu_discovery_get_mall_info(struct amdgpu_device *adev);
int amdgpu_discovery_set_ip_blocks(struct amdgpu_device *adev);
#endif /* __AMDGPU_DISCOVERY__ */