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drm/amdgpu: Implement get num of hops between two xgmi device

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KFD need to provide the info for upper level to determine the data path

Signed-off-by: shaoyunl <shaoyun.liu@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
shaoyunl
2019-04-17 14:28:18 -04:00
committed by Alex Deucher
parent d8e408a827
commit da361dd13f
5 changed files with 50 additions and 18 deletions
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15
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
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@@ -27,6 +27,7 @@
#include "amdgpu_gfx.h"
#include <linux/module.h>
#include <linux/dma-buf.h>
#include "amdgpu_xgmi.h"
static const unsigned int compute_vmid_bitmap = 0xFF00;
@@ -518,6 +519,20 @@ uint64_t amdgpu_amdkfd_get_hive_id(struct kgd_dev *kgd)
return adev->gmc.xgmi.hive_id;
}
uint8_t amdgpu_amdkfd_get_xgmi_hops_count(struct kgd_dev *dst, struct kgd_dev *src)
{
struct amdgpu_device *peer_adev = (struct amdgpu_device *)src;
struct amdgpu_device *adev = (struct amdgpu_device *)dst;
int ret = amdgpu_xgmi_get_hops_count(adev, peer_adev);
if (ret < 0) {
DRM_ERROR("amdgpu: failed to get xgmi hops count between node %d and %d. ret = %d\n",
adev->gmc.xgmi.physical_node_id,
peer_adev->gmc.xgmi.physical_node_id, ret);
ret = 0;
}
return (uint8_t)ret;
}
uint64_t amdgpu_amdkfd_get_mmio_remap_phys_addr(struct kgd_dev *kgd)
{