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drm/amdgpu: move dummy page functions to amdgpu_gart.c

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It's the only place they are used.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher
2017-12-15 16:28:33 -05:00
parent 39c640c086
commit 55e0037aab
3 changed files with 47 additions and 50 deletions
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45
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@@ -724,51 +724,6 @@ bool amdgpu_device_need_post(struct amdgpu_device *adev)
return true;
}
/**
* amdgpu_dummy_page_init - init dummy page used by the driver
*
* @adev: amdgpu_device pointer
*
* Allocate the dummy page used by the driver (all asics).
* This dummy page is used by the driver as a filler for gart entries
* when pages are taken out of the GART
* Returns 0 on sucess, -ENOMEM on failure.
*/
int amdgpu_dummy_page_init(struct amdgpu_device *adev)
{
if (adev->dummy_page.page)
return 0;
adev->dummy_page.page = alloc_page(GFP_DMA32 | GFP_KERNEL | __GFP_ZERO);
if (adev->dummy_page.page == NULL)
return -ENOMEM;
adev->dummy_page.addr = pci_map_page(adev->pdev, adev->dummy_page.page,
0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
if (pci_dma_mapping_error(adev->pdev, adev->dummy_page.addr)) {
dev_err(&adev->pdev->dev, "Failed to DMA MAP the dummy page\n");
__free_page(adev->dummy_page.page);
adev->dummy_page.page = NULL;
return -ENOMEM;
}
return 0;
}
/**
* amdgpu_dummy_page_fini - free dummy page used by the driver
*
* @adev: amdgpu_device pointer
*
* Frees the dummy page used by the driver (all asics).
*/
void amdgpu_dummy_page_fini(struct amdgpu_device *adev)
{
if (adev->dummy_page.page == NULL)
return;
pci_unmap_page(adev->pdev, adev->dummy_page.addr,
PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
__free_page(adev->dummy_page.page);
adev->dummy_page.page = NULL;
}
/* if we get transitioned to only one device, take VGA back */
/**
* amdgpu_device_vga_set_decode - enable/disable vga decode