1 files changed, 29 insertions, 202 deletions

diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c
index 3df9f16b041c..1006c15445e9 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_vm.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c
@@ -33,6 +33,7 @@
 #include <ttm/ttm_module.h>
 #include <ttm/ttm_bo_driver.h>
 #include <ttm/ttm_placement.h>
+#include <drm/drm_vma_manager.h>
 #include <linux/mm.h>
 #include <linux/rbtree.h>
 #include <linux/module.h>
@@ -40,37 +41,6 @@
 
 #define TTM_BO_VM_NUM_PREFAULT 16
 
-static struct ttm_buffer_object *ttm_bo_vm_lookup_rb(struct ttm_bo_device *bdev,
-						     unsigned long page_start,
-						     unsigned long num_pages)
-{
-	struct rb_node *cur = bdev->addr_space_rb.rb_node;
-	unsigned long cur_offset;
-	struct ttm_buffer_object *bo;
-	struct ttm_buffer_object *best_bo = NULL;
-
-	while (likely(cur != NULL)) {
-		bo = rb_entry(cur, struct ttm_buffer_object, vm_rb);
-		cur_offset = bo->vm_node->start;
-		if (page_start >= cur_offset) {
-			cur = cur->rb_right;
-			best_bo = bo;
-			if (page_start == cur_offset)
-				break;
-		} else
-			cur = cur->rb_left;
-	}
-
-	if (unlikely(best_bo == NULL))
-		return NULL;
-
-	if (unlikely((best_bo->vm_node->start + best_bo->num_pages) <
-		     (page_start + num_pages)))
-		return NULL;
-
-	return best_bo;
-}
-
 static int ttm_bo_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 {
 	struct ttm_buffer_object *bo = (struct ttm_buffer_object *)
@@ -146,9 +116,9 @@ static int ttm_bo_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 	}
 
 	page_offset = ((address - vma->vm_start) >> PAGE_SHIFT) +
-	    bo->vm_node->start - vma->vm_pgoff;
+	    drm_vma_node_start(&bo->vma_node) - vma->vm_pgoff;
 	page_last = vma_pages(vma) +
-	    bo->vm_node->start - vma->vm_pgoff;
+	    drm_vma_node_start(&bo->vma_node) - vma->vm_pgoff;
 
 	if (unlikely(page_offset >= bo->num_pages)) {
 		retval = VM_FAULT_SIGBUS;
@@ -249,6 +219,30 @@ static const struct vm_operations_struct ttm_bo_vm_ops = {
 	.close = ttm_bo_vm_close
 };
 
+static struct ttm_buffer_object *ttm_bo_vm_lookup(struct ttm_bo_device *bdev,
+						  unsigned long offset,
+						  unsigned long pages)
+{
+	struct drm_vma_offset_node *node;
+	struct ttm_buffer_object *bo = NULL;
+
+	drm_vma_offset_lock_lookup(&bdev->vma_manager);
+
+	node = drm_vma_offset_lookup_locked(&bdev->vma_manager, offset, pages);
+	if (likely(node)) {
+		bo = container_of(node, struct ttm_buffer_object, vma_node);
+		if (!kref_get_unless_zero(&bo->kref))
+			bo = NULL;
+	}
+
+	drm_vma_offset_unlock_lookup(&bdev->vma_manager);
+
+	if (!bo)
+		pr_err("Could not find buffer object to map\n");
+
+	return bo;
+}
+
 int ttm_bo_mmap(struct file *filp, struct vm_area_struct *vma,
 		struct ttm_bo_device *bdev)
 {
@@ -256,17 +250,9 @@ int ttm_bo_mmap(struct file *filp, struct vm_area_struct *vma,
 	struct ttm_buffer_object *bo;
 	int ret;
 
-	read_lock(&bdev->vm_lock);
-	bo = ttm_bo_vm_lookup_rb(bdev, vma->vm_pgoff,
-				 vma_pages(vma));
-	if (likely(bo != NULL) && !kref_get_unless_zero(&bo->kref))
-		bo = NULL;
-	read_unlock(&bdev->vm_lock);
-
-	if (unlikely(bo == NULL)) {
-		pr_err("Could not find buffer object to map\n");
+	bo = ttm_bo_vm_lookup(bdev, vma->vm_pgoff, vma_pages(vma));
+	if (unlikely(!bo))
 		return -EINVAL;
-	}
 
 	driver = bo->bdev->driver;
 	if (unlikely(!driver->verify_access)) {
@@ -304,162 +290,3 @@ 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;
-}