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drm/amdgpu: add 64bit wb functions

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Newer asics need 64 bit writeback slots.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Ken Wang <Qingqing.Wang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Ken Wang 2016-03-18 15:08:49 +08:00 committed by Alex Deucher
parent 536fbf946c
commit 7014285ade
3 changed files with 78 additions and 13 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View file

@ -1021,6 +1021,8 @@ struct amdgpu_wb {
int amdgpu_wb_get(struct amdgpu_device *adev, u32 *wb);
void amdgpu_wb_free(struct amdgpu_device *adev, u32 wb);
int amdgpu_wb_get_64bit(struct amdgpu_device *adev, u32 *wb);
void amdgpu_wb_free_64bit(struct amdgpu_device *adev, u32 wb);
void amdgpu_get_pcie_info(struct amdgpu_device *adev);

39
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View file

@ -515,6 +515,29 @@ int amdgpu_wb_get(struct amdgpu_device *adev, u32 *wb)
}
}
/**
* amdgpu_wb_get_64bit - Allocate a wb entry
*
* @adev: amdgpu_device pointer
* @wb: wb index
*
* Allocate a wb slot for use by the driver (all asics).
* Returns 0 on success or -EINVAL on failure.
*/
int amdgpu_wb_get_64bit(struct amdgpu_device *adev, u32 *wb)
{
unsigned long offset = bitmap_find_next_zero_area_off(adev->wb.used,
adev->wb.num_wb, 0, 2, 7, 0);
if ((offset + 1) < adev->wb.num_wb) {
__set_bit(offset, adev->wb.used);
__set_bit(offset + 1, adev->wb.used);
*wb = offset;
return 0;
} else {
return -EINVAL;
}
}
/**
* amdgpu_wb_free - Free a wb entry
*
@ -529,6 +552,22 @@ void amdgpu_wb_free(struct amdgpu_device *adev, u32 wb)
__clear_bit(wb, adev->wb.used);
}
/**
* amdgpu_wb_free_64bit - Free a wb entry
*
* @adev: amdgpu_device pointer
* @wb: wb index
*
* Free a wb slot allocated for use by the driver (all asics)
*/
void amdgpu_wb_free_64bit(struct amdgpu_device *adev, u32 wb)
{
if ((wb + 1) < adev->wb.num_wb) {
__clear_bit(wb, adev->wb.used);
__clear_bit(wb + 1, adev->wb.used);
}
}
/**
* amdgpu_vram_location - try to find VRAM location
* @adev: amdgpu device structure holding all necessary informations

50
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
View file

@ -182,16 +182,32 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
return r;
}
r = amdgpu_wb_get(adev, &ring->rptr_offs);
if (r) {
dev_err(adev->dev, "(%d) ring rptr_offs wb alloc failed\n", r);
return r;
}
if (ring->funcs->support_64bit_ptrs) {
r = amdgpu_wb_get_64bit(adev, &ring->rptr_offs);
if (r) {
dev_err(adev->dev, "(%d) ring rptr_offs wb alloc failed\n", r);
return r;
}
r = amdgpu_wb_get_64bit(adev, &ring->wptr_offs);
if (r) {
dev_err(adev->dev, "(%d) ring wptr_offs wb alloc failed\n", r);
return r;
}
} else {
r = amdgpu_wb_get(adev, &ring->rptr_offs);
if (r) {
dev_err(adev->dev, "(%d) ring rptr_offs wb alloc failed\n", r);
return r;
}
r = amdgpu_wb_get(adev, &ring->wptr_offs);
if (r) {
dev_err(adev->dev, "(%d) ring wptr_offs wb alloc failed\n", r);
return r;
}
r = amdgpu_wb_get(adev, &ring->wptr_offs);
if (r) {
dev_err(adev->dev, "(%d) ring wptr_offs wb alloc failed\n", r);
return r;
}
r = amdgpu_wb_get(adev, &ring->fence_offs);
@ -256,10 +272,18 @@ void amdgpu_ring_fini(struct amdgpu_ring *ring)
{
ring->ready = false;
amdgpu_wb_free(ring->adev, ring->cond_exe_offs);
amdgpu_wb_free(ring->adev, ring->fence_offs);
amdgpu_wb_free(ring->adev, ring->rptr_offs);
amdgpu_wb_free(ring->adev, ring->wptr_offs);
if (ring->funcs->support_64bit_ptrs) {
amdgpu_wb_free_64bit(ring->adev, ring->cond_exe_offs);
amdgpu_wb_free_64bit(ring->adev, ring->fence_offs);
amdgpu_wb_free_64bit(ring->adev, ring->rptr_offs);
amdgpu_wb_free_64bit(ring->adev, ring->wptr_offs);
} else {
amdgpu_wb_free(ring->adev, ring->cond_exe_offs);
amdgpu_wb_free(ring->adev, ring->fence_offs);
amdgpu_wb_free(ring->adev, ring->rptr_offs);
amdgpu_wb_free(ring->adev, ring->wptr_offs);
}
amdgpu_bo_free_kernel(&ring->ring_obj,
&ring->gpu_addr,