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author | 2023-05-16 17:16:30 -0400 | |
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committer | 2023-06-09 10:37:52 -0400 | |
commit | 45b3a914d40e63d2c9e3a3e02fb2014be975b9b0 (patch) | |
tree | 66bdb4126a5d312e3c19bb14d163d90d305114ea /drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c | |
parent | drm/amdgpu: initialize RAS for gfx_v9_4_3 (diff) | |
download | linux-45b3a914d40e63d2c9e3a3e02fb2014be975b9b0.tar.gz linux-45b3a914d40e63d2c9e3a3e02fb2014be975b9b0.tar.bz2 linux-45b3a914d40e63d2c9e3a3e02fb2014be975b9b0.zip |
drm/amdgpu/gmc9: fix 64 bit division in partition code
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>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c')
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c index 739eb7c0d133..5de92c9ab18f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c @@ -794,3 +794,18 @@ void amdgpu_amdkfd_unlock_kfd(struct amdgpu_device *adev) { kgd2kfd_unlock_kfd(); } + + +u64 amdgpu_amdkfd_xcp_memory_size(struct amdgpu_device *adev, int xcp_id) +{ + u64 tmp; + s8 mem_id = KFD_XCP_MEM_ID(adev, xcp_id); + + if (adev->gmc.num_mem_partitions && xcp_id >= 0 && mem_id >= 0) { + tmp = adev->gmc.mem_partitions[mem_id].size; + do_div(tmp, adev->xcp_mgr->num_xcp_per_mem_partition); + return tmp; + } else { + return adev->gmc.real_vram_size; + } +} |