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Use drm render device to map kfd BOs

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Previously kfd device is used to map memory for CPU access.
However this is not compatible with how TTM handles CPU mapping
on eviction - memory won't be unmapped and remapped on restore.
This fixes the issue by mmapping memory using DRM render device.

This patch requires a coordinated kernel driver change to work.
To make it compatible with old kernel driver, some temporary codes
are included. Once the coordinated kernel driver is checked in,
the temporary codes can be removed.



Change-Id: Ie7b304c4a82b7e8d5ab703acb81d66430af4f0bc
Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>


[ROCm/ROCR-Runtime commit: 68a2d286ca]
This commit is contained in:
Oak Zeng
2017-10-27 16:17:51 -04:00
committed by Felix Kuehling
parent a068301408
commit e305dc9c82
4 changed files with 47 additions and 9 deletions
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projects/rocr-runtime/src/libhsakmt.h
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@@ -107,6 +107,7 @@ HSAKMT_STATUS validate_nodeid(uint32_t nodeid, uint32_t *gpu_id);
HSAKMT_STATUS gpuid_to_nodeid(uint32_t gpu_id, uint32_t* node_id);
uint16_t get_device_id_by_node(HSAuint32 node_id);
uint16_t get_device_id_by_gpu_id(HSAuint32 gpu_id);
int get_drm_render_fd_by_gpu_id(HSAuint32 gpu_id);
HSAKMT_STATUS validate_nodeid_array(uint32_t **gpu_id_array,
uint32_t NumberOfNodes, uint32_t *NodeArray);