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drm/amdgpu: Use ttm_pages_limit to override vram reporting

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On GFXIP9.4.3 APU, allow the memory reporting as per the ttm pages
limit in NPS1 mode.

Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Rajneesh Bhardwaj
2023-10-02 15:27:01 -04:00
committed by Alex Deucher
parent 9b37d45d79
commit f4bff6e0b9
2 changed files with 16 additions and 10 deletions
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17
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
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@@ -28,6 +28,7 @@
#include "amdgpu.h"
#include "amdgpu_gfx.h"
#include "amdgpu_dma_buf.h"
#include <drm/ttm/ttm_tt.h>
#include <linux/module.h>
#include <linux/dma-buf.h>
#include "amdgpu_xgmi.h"
@@ -783,11 +784,23 @@ void amdgpu_amdkfd_unlock_kfd(struct amdgpu_device *adev)
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);
u64 tmp;
if (adev->gmc.num_mem_partitions && xcp_id >= 0 && mem_id >= 0) {
tmp = adev->gmc.mem_partitions[mem_id].size;
if (adev->gmc.is_app_apu && adev->gmc.num_mem_partitions == 1) {
/* In NPS1 mode, we should restrict the vram reporting
* tied to the ttm_pages_limit which is 1/2 of the system
* memory. For other partition modes, the HBM is uniformly
* divided already per numa node reported. If user wants to
* go beyond the default ttm limit and maximize the ROCm
* allocations, they can go up to max ttm and sysmem limits.
*/
tmp = (ttm_tt_pages_limit() << PAGE_SHIFT) / num_online_nodes();
} else {
tmp = adev->gmc.mem_partitions[mem_id].size;
}
do_div(tmp, adev->xcp_mgr->num_xcp_per_mem_partition);
return ALIGN_DOWN(tmp, PAGE_SIZE);
} else {