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authorOded Gabbay <oded.gabbay@amd.com>2014-07-15 13:53:32 +0300
committerOded Gabbay <oded.gabbay@amd.com>2014-07-15 13:53:32 +0300
commite28740ece34d314002b1ddfa14e8fb7c7b909489 (patch)
treeb428227c964e601e090662183c422440e0613090 /CREDITS
parent1c0a46255f8d7daf5b601668836e185fd1294e94 (diff)
downloadlinux-linaro-stable-e28740ece34d314002b1ddfa14e8fb7c7b909489.tar.gz
drm/radeon: Add radeon <--> amdkfd interface
This patch adds the interface between the radeon driver and the amdkfd driver. The interface implementation is contained in radeon_kfd.c and radeon_kfd.h. The interface itself is represented by a pointer to struct kfd_dev. The pointer is located inside radeon_device structure. All the register accesses that amdkfd need are done using this interface. This allows us to avoid direct register accesses in amdkfd proper, while also avoiding locking between amdkfd and radeon. The single exception is the doorbells that are used in both of the drivers. However, because they are located in separate pci bar pages, the danger of sharing registers between the drivers is minimal. Having said that, we are planning to move the doorbells as well to radeon. v3: Add interface for sa manager init and fini. The init function will allocate a buffer on system memory and pin it to the GART address space via the radeon sa manager. All mappings of buffers to GART address space are done via the radeon sa manager. The interface of allocate memory will use the radeon sa manager to sub allocate from the single buffer that was allocated during the init function. Change lower_32/upper_32 calls to use linux macros Add documentation for the interface v4: Change ptr field type in kgd_mem from uint32_t* to void* to match to type that is returned by radeon_sa_bo_cpu_addr v5: Change format of mqd structure to work with latest KV firmware Add support for AQL queues creation to enable working with open-source HSA runtime. Move generic kfd-->kgd interface and other generic kgd definitions to a generic header file that will be used by AMD's radeon and amdgpu drivers Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
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