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drm/amdgpu/sdma: allocate CSA per sdma ring 

Allocate CSA for the given sdma ring.

Acked-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jack Xiao 2019-01-07 15:28:01 +08:00 committed by Alex Deucher
parent d8780dc71d
commit ca1eb73207
2 changed files with 28 additions and 1 deletions
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27
drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
View File

@ -24,6 +24,10 @@
#include "amdgpu.h"
#include "amdgpu_sdma.h"
#define AMDGPU_CSA_SDMA_SIZE 64
/* SDMA CSA reside in the 3rd page of CSA */
#define AMDGPU_CSA_SDMA_OFFSET (4096 * 2)
/*
* GPU SDMA IP block helpers function.
*/
@ -56,3 +60,26 @@ int amdgpu_sdma_get_index_from_ring(struct amdgpu_ring *ring, uint32_t *index)
return -EINVAL;
}
uint64_t amdgpu_sdma_get_csa_mc_addr(struct amdgpu_ring *ring,
unsigned vmid)
{
struct amdgpu_device *adev = ring->adev;
uint64_t csa_mc_addr;
uint32_t index = 0;
int r;
if (vmid == 0 || !amdgpu_mcbp)
return 0;
r = amdgpu_sdma_get_index_from_ring(ring, &index);
if (r || index > 31)
csa_mc_addr = 0;
else
csa_mc_addr = amdgpu_csa_vaddr(adev) +
AMDGPU_CSA_SDMA_OFFSET +
index * AMDGPU_CSA_SDMA_SIZE;
return csa_mc_addr;
}

2
drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h
View File

@ -97,5 +97,5 @@ struct amdgpu_buffer_funcs {
struct amdgpu_sdma_instance *
amdgpu_sdma_get_instance_from_ring(struct amdgpu_ring *ring);
int amdgpu_sdma_get_index_from_ring(struct amdgpu_ring *ring, uint32_t *index);
uint64_t amdgpu_sdma_get_csa_mc_addr(struct amdgpu_ring *ring, unsigned vmid);
#endif