Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxx>
---
drivers/gpu/drm/ttm/ttm_bo_vm.c | 159 ----------------------------------------
1 file changed, 159 deletions(-)
diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c
index 3df9f16..87906c2 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_vm.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c
@@ -304,162 +304,3 @@ int ttm_fbdev_mmap(struct vm_area_struct *vma, struct ttm_buffer_object *bo)
return 0;
}
EXPORT_SYMBOL(ttm_fbdev_mmap);
-
-
-ssize_t ttm_bo_io(struct ttm_bo_device *bdev, struct file *filp,
- const char __user *wbuf, char __user *rbuf, size_t count,
- loff_t *f_pos, bool write)
-{
- struct ttm_buffer_object *bo;
- struct ttm_bo_driver *driver;
- struct ttm_bo_kmap_obj map;
- unsigned long dev_offset = (*f_pos >> PAGE_SHIFT);
- unsigned long kmap_offset;
- unsigned long kmap_end;
- unsigned long kmap_num;
- size_t io_size;
- unsigned int page_offset;
- char *virtual;
- int ret;
- bool no_wait = false;
- bool dummy;
-
- read_lock(&bdev->vm_lock);
- bo = ttm_bo_vm_lookup_rb(bdev, dev_offset, 1);
- if (likely(bo != NULL))
- ttm_bo_reference(bo);
- read_unlock(&bdev->vm_lock);
-
- if (unlikely(bo == NULL))
- return -EFAULT;
-
- driver = bo->bdev->driver;
- if (unlikely(!driver->verify_access)) {
- ret = -EPERM;
- goto out_unref;
- }
-
- ret = driver->verify_access(bo, filp);
- if (unlikely(ret != 0))
- goto out_unref;
-
- kmap_offset = dev_offset - bo->vm_node->start;
- if (unlikely(kmap_offset >= bo->num_pages)) {
- ret = -EFBIG;
- goto out_unref;
- }
-
- page_offset = *f_pos & ~PAGE_MASK;
- io_size = bo->num_pages - kmap_offset;
- io_size = (io_size << PAGE_SHIFT) - page_offset;
- if (count < io_size)
- io_size = count;
-
- kmap_end = (*f_pos + count - 1) >> PAGE_SHIFT;
- kmap_num = kmap_end - kmap_offset + 1;
-
- ret = ttm_bo_reserve(bo, true, no_wait, false, 0);
-
- switch (ret) {
- case 0:
- break;
- case -EBUSY:
- ret = -EAGAIN;
- goto out_unref;
- default:
- goto out_unref;
- }
-
- ret = ttm_bo_kmap(bo, kmap_offset, kmap_num, &map);
- if (unlikely(ret != 0)) {
- ttm_bo_unreserve(bo);
- goto out_unref;
- }
-
- virtual = ttm_kmap_obj_virtual(&map, &dummy);
- virtual += page_offset;
-
- if (write)
- ret = copy_from_user(virtual, wbuf, io_size);
- else
- ret = copy_to_user(rbuf, virtual, io_size);
-
- ttm_bo_kunmap(&map);
- ttm_bo_unreserve(bo);
- ttm_bo_unref(&bo);
-
- if (unlikely(ret != 0))
- return -EFBIG;
-
- *f_pos += io_size;
-
- return io_size;
-out_unref:
- ttm_bo_unref(&bo);
- return ret;
-}
-
-ssize_t ttm_bo_fbdev_io(struct ttm_buffer_object *bo, const char __user *wbuf,
- char __user *rbuf, size_t count, loff_t *f_pos,
- bool write)
-{
- struct ttm_bo_kmap_obj map;
- unsigned long kmap_offset;
- unsigned long kmap_end;
- unsigned long kmap_num;
- size_t io_size;
- unsigned int page_offset;
- char *virtual;
- int ret;
- bool no_wait = false;
- bool dummy;
-
- kmap_offset = (*f_pos >> PAGE_SHIFT);
- if (unlikely(kmap_offset >= bo->num_pages))
- return -EFBIG;
-
- page_offset = *f_pos & ~PAGE_MASK;
- io_size = bo->num_pages - kmap_offset;
- io_size = (io_size << PAGE_SHIFT) - page_offset;
- if (count < io_size)
- io_size = count;
-
- kmap_end = (*f_pos + count - 1) >> PAGE_SHIFT;
- kmap_num = kmap_end - kmap_offset + 1;
-
- ret = ttm_bo_reserve(bo, true, no_wait, false, 0);
-
- switch (ret) {
- case 0:
- break;
- case -EBUSY:
- return -EAGAIN;
- default:
- return ret;
- }
-
- ret = ttm_bo_kmap(bo, kmap_offset, kmap_num, &map);
- if (unlikely(ret != 0)) {
- ttm_bo_unreserve(bo);
- return ret;
- }
-
- virtual = ttm_kmap_obj_virtual(&map, &dummy);
- virtual += page_offset;
-
- if (write)
- ret = copy_from_user(virtual, wbuf, io_size);
- else
- ret = copy_to_user(rbuf, virtual, io_size);
-
- ttm_bo_kunmap(&map);
- ttm_bo_unreserve(bo);
- ttm_bo_unref(&bo);
-
- if (unlikely(ret != 0))
- return ret;
-
- *f_pos += io_size;
-
- return io_size;
-}
--
1.8.3.4
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