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drm/amdgpu:fix gfx fence allocate size

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1, for sriov, we need 8dw for the gfx fence due to CP
behaviour
2, cleanup wrong logic in wptr/rptr wb alloc and free

Change-Id: Ifbfed17a4621dae57244942ffac7de1743de0294
Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Monk Liu
2017-06-19 10:19:41 -04:00
committed by Alex Deucher
parent e342610c9a
commit 0915fdbc69
3 changed files with 52 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

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

@ -1192,7 +1192,9 @@ 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);
int amdgpu_wb_get_256Bit(struct amdgpu_device *adev, u32 *wb);
void amdgpu_wb_free_64bit(struct amdgpu_device *adev, u32 wb);
void amdgpu_wb_free_256bit(struct amdgpu_device *adev, u32 wb);
void amdgpu_get_pcie_info(struct amdgpu_device *adev);

32
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View File

@ -602,6 +602,21 @@ int amdgpu_wb_get_64bit(struct amdgpu_device *adev, u32 *wb)
}
}
int amdgpu_wb_get_256Bit(struct amdgpu_device *adev, u32 *wb)
{
int i = 0;
unsigned long offset = bitmap_find_next_zero_area_off(adev->wb.used,
adev->wb.num_wb, 0, 8, 63, 0);
if ((offset + 7) < adev->wb.num_wb) {
for (i = 0; i < 8; i++)
__set_bit(offset + i, adev->wb.used);
*wb = offset;
return 0;
} else {
return -EINVAL;
}
}
/**
* amdgpu_wb_free - Free a wb entry
*
@ -632,6 +647,23 @@ void amdgpu_wb_free_64bit(struct amdgpu_device *adev, u32 wb)
}
}
/**
* amdgpu_wb_free_256bit - 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_256bit(struct amdgpu_device *adev, u32 wb)
{
int i = 0;
if ((wb + 7) < adev->wb.num_wb)
for (i = 0; i < 8; i++)
__clear_bit(wb + i, adev->wb.used);
}
/**
* amdgpu_vram_location - try to find VRAM location
* @adev: amdgpu device structure holding all necessary informations

26
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
View File

@ -212,10 +212,19 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
}
r = amdgpu_wb_get(adev, &ring->fence_offs);
if (r) {
dev_err(adev->dev, "(%d) ring fence_offs wb alloc failed\n", r);
return r;
if (amdgpu_sriov_vf(adev) && ring->funcs->type == AMDGPU_RING_TYPE_GFX) {
r = amdgpu_wb_get_256Bit(adev, &ring->fence_offs);
if (r) {
dev_err(adev->dev, "(%d) ring fence_offs wb alloc failed\n", r);
return r;
}
} else {
r = amdgpu_wb_get(adev, &ring->fence_offs);
if (r) {
dev_err(adev->dev, "(%d) ring fence_offs wb alloc failed\n", r);
return r;
}
}
r = amdgpu_wb_get(adev, &ring->cond_exe_offs);
@ -278,17 +287,18 @@ void amdgpu_ring_fini(struct amdgpu_ring *ring)
ring->ready = false;
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_wb_free(ring->adev, ring->cond_exe_offs);
if (amdgpu_sriov_vf(ring->adev) && ring->funcs->type == AMDGPU_RING_TYPE_GFX)
amdgpu_wb_free_256bit(ring->adev, ring->fence_offs);
else
amdgpu_wb_free(ring->adev, ring->fence_offs);
amdgpu_bo_free_kernel(&ring->ring_obj,
&ring->gpu_addr,