diff options
Diffstat (limited to 'drivers/gpu/drm/i915/selftests/mock_dmabuf.c')
| -rw-r--r-- | drivers/gpu/drm/i915/selftests/mock_dmabuf.c | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/drivers/gpu/drm/i915/selftests/mock_dmabuf.c b/drivers/gpu/drm/i915/selftests/mock_dmabuf.c deleted file mode 100644 index ca682caf1062..000000000000 --- a/drivers/gpu/drm/i915/selftests/mock_dmabuf.c +++ /dev/null @@ -1,162 +0,0 @@ -/* - * Copyright © 2016 Intel Corporation - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS - * IN THE SOFTWARE. - * - */ - -#include "mock_dmabuf.h" - -static struct sg_table *mock_map_dma_buf(struct dma_buf_attachment *attachment, - enum dma_data_direction dir) -{ - struct mock_dmabuf *mock = to_mock(attachment->dmabuf); - struct sg_table *st; - struct scatterlist *sg; - int i, err; - - st = kmalloc(sizeof(*st), GFP_KERNEL); - if (!st) - return ERR_PTR(-ENOMEM); - - err = sg_alloc_table(st, mock->npages, GFP_KERNEL); - if (err) - goto err_free; - - sg = st->sgl; - for (i = 0; i < mock->npages; i++) { - sg_set_page(sg, mock->pages[i], PAGE_SIZE, 0); - sg = sg_next(sg); - } - - if (!dma_map_sg(attachment->dev, st->sgl, st->nents, dir)) { - err = -ENOMEM; - goto err_st; - } - - return st; - -err_st: - sg_free_table(st); -err_free: - kfree(st); - return ERR_PTR(err); -} - -static void mock_unmap_dma_buf(struct dma_buf_attachment *attachment, - struct sg_table *st, - enum dma_data_direction dir) -{ - dma_unmap_sg(attachment->dev, st->sgl, st->nents, dir); - sg_free_table(st); - kfree(st); -} - -static void mock_dmabuf_release(struct dma_buf *dma_buf) -{ - struct mock_dmabuf *mock = to_mock(dma_buf); - int i; - - for (i = 0; i < mock->npages; i++) - put_page(mock->pages[i]); - - kfree(mock); -} - -static void *mock_dmabuf_vmap(struct dma_buf *dma_buf) -{ - struct mock_dmabuf *mock = to_mock(dma_buf); - - return vm_map_ram(mock->pages, mock->npages, 0, PAGE_KERNEL); -} - -static void mock_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr) -{ - struct mock_dmabuf *mock = to_mock(dma_buf); - - vm_unmap_ram(vaddr, mock->npages); -} - -static void *mock_dmabuf_kmap(struct dma_buf *dma_buf, unsigned long page_num) -{ - struct mock_dmabuf *mock = to_mock(dma_buf); - - return kmap(mock->pages[page_num]); -} - -static void mock_dmabuf_kunmap(struct dma_buf *dma_buf, unsigned long page_num, void *addr) -{ - struct mock_dmabuf *mock = to_mock(dma_buf); - - return kunmap(mock->pages[page_num]); -} - -static int mock_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma) -{ - return -ENODEV; -} - -static const struct dma_buf_ops mock_dmabuf_ops = { - .map_dma_buf = mock_map_dma_buf, - .unmap_dma_buf = mock_unmap_dma_buf, - .release = mock_dmabuf_release, - .map = mock_dmabuf_kmap, - .unmap = mock_dmabuf_kunmap, - .mmap = mock_dmabuf_mmap, - .vmap = mock_dmabuf_vmap, - .vunmap = mock_dmabuf_vunmap, -}; - -static struct dma_buf *mock_dmabuf(int npages) -{ - struct mock_dmabuf *mock; - DEFINE_DMA_BUF_EXPORT_INFO(exp_info); - struct dma_buf *dmabuf; - int i; - - mock = kmalloc(sizeof(*mock) + npages * sizeof(struct page *), - GFP_KERNEL); - if (!mock) - return ERR_PTR(-ENOMEM); - - mock->npages = npages; - for (i = 0; i < npages; i++) { - mock->pages[i] = alloc_page(GFP_KERNEL); - if (!mock->pages[i]) - goto err; - } - - exp_info.ops = &mock_dmabuf_ops; - exp_info.size = npages * PAGE_SIZE; - exp_info.flags = O_CLOEXEC; - exp_info.priv = mock; - - dmabuf = dma_buf_export(&exp_info); - if (IS_ERR(dmabuf)) - goto err; - - return dmabuf; - -err: - while (i--) - put_page(mock->pages[i]); - kfree(mock); - return ERR_PTR(-ENOMEM); -} |