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drm/amdgpu/gmc9: fix 64 bit division in partition code

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Rework logic or use do_div() to avoid problems on 32 bit.

v2: add a missing case for XCP macro
v3: fix out of bounds array access
v4: fix xcp handling harder

Acked-by: Guchun Chen <guchun.chen@amd.com> (v1)
Reviewed-by: Mukul Joshi <mukul.joshi@amd.com> (v3)
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher
2023-05-16 17:16:30 -04:00
parent 92ecb92ccc
commit 45b3a914d4
5 changed files with 35 additions and 13 deletions
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9
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
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@@ -333,15 +333,14 @@ int amdgpu_amdkfd_reserve_mem_limit(struct amdgpu_device *adev,
void amdgpu_amdkfd_unreserve_mem_limit(struct amdgpu_device *adev,
uint64_t size, u32 alloc_flag, int8_t xcp_id);
u64 amdgpu_amdkfd_xcp_memory_size(struct amdgpu_device *adev, int xcp_id);
#define KFD_XCP_MEM_ID(adev, xcp_id) \
((adev)->xcp_mgr && (xcp_id) >= 0 ?\
(adev)->xcp_mgr->xcp[(xcp_id)].mem_id : -1)
#define KFD_XCP_MEMORY_SIZE(adev, xcp_id)\
((adev)->gmc.num_mem_partitions && (xcp_id) >= 0 ?\
(adev)->gmc.mem_partitions[KFD_XCP_MEM_ID((adev), (xcp_id))].size /\
(adev)->xcp_mgr->num_xcp_per_mem_partition :\
(adev)->gmc.real_vram_size)
#define KFD_XCP_MEMORY_SIZE(adev, xcp_id) amdgpu_amdkfd_xcp_memory_size((adev), (xcp_id))
#if IS_ENABLED(CONFIG_HSA_AMD)
void amdgpu_amdkfd_gpuvm_init_mem_limits(void);