/**************************************************************************
*
- * Copyright © 2011-2015 VMware, Inc., Palo Alto, CA., USA
+ * Copyright © 2011-2018 VMware, Inc., Palo Alto, CA., USA
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
#include <drm/drmP.h>
#include "vmwgfx_drv.h"
+#include "drm/ttm/ttm_object.h"
+
+
+/**
+ * struct vmw_user_buffer_object - User-space-visible buffer object
+ *
+ * @prime: The prime object providing user visibility.
+ * @vbo: The struct vmw_buffer_object
+ */
+struct vmw_user_buffer_object {
+ struct ttm_prime_object prime;
+ struct vmw_buffer_object vbo;
+};
+
+
+/**
+ * vmw_buffer_object - Convert a struct ttm_buffer_object to a struct
+ * vmw_buffer_object.
+ *
+ * @bo: Pointer to the TTM buffer object.
+ * Return: Pointer to the struct vmw_buffer_object embedding the
+ * TTM buffer object.
+ */
+static struct vmw_buffer_object *
+vmw_buffer_object(struct ttm_buffer_object *bo)
+{
+ return container_of(bo, struct vmw_buffer_object, base);
+}
+
+
+/**
+ * vmw_user_buffer_object - Convert a struct ttm_buffer_object to a struct
+ * vmw_user_buffer_object.
+ *
+ * @bo: Pointer to the TTM buffer object.
+ * Return: Pointer to the struct vmw_buffer_object embedding the TTM buffer
+ * object.
+ */
+static struct vmw_user_buffer_object *
+vmw_user_buffer_object(struct ttm_buffer_object *bo)
+{
+ struct vmw_buffer_object *vmw_bo = vmw_buffer_object(bo);
+
+ return container_of(vmw_bo, struct vmw_user_buffer_object, vbo);
+}
/**
* @buf: DMA buffer to move.
* @placement: The placement to pin it.
* @interruptible: Use interruptible wait.
- *
- * Returns
- * -ERESTARTSYS if interrupted by a signal.
+ * Return: Zero on success, Negative error code on failure. In particular
+ * -ERESTARTSYS if interrupted by a signal
*/
int vmw_bo_pin_in_placement(struct vmw_private *dev_priv,
struct vmw_buffer_object *buf,
return ret;
}
+
/**
* vmw_bo_pin_in_vram_or_gmr - Move a buffer to vram or gmr.
*
* @buf: DMA buffer to move.
* @pin: Pin buffer if true.
* @interruptible: Use interruptible wait.
- *
- * Returns
- * -ERESTARTSYS if interrupted by a signal.
+ * Return: Zero on success, Negative error code on failure. In particular
+ * -ERESTARTSYS if interrupted by a signal
*/
int vmw_bo_pin_in_vram_or_gmr(struct vmw_private *dev_priv,
struct vmw_buffer_object *buf,
return ret;
}
+
/**
* vmw_bo_pin_in_vram - Move a buffer to vram.
*
* @dev_priv: Driver private.
* @buf: DMA buffer to move.
* @interruptible: Use interruptible wait.
- *
- * Returns
- * -ERESTARTSYS if interrupted by a signal.
+ * Return: Zero on success, Negative error code on failure. In particular
+ * -ERESTARTSYS if interrupted by a signal
*/
int vmw_bo_pin_in_vram(struct vmw_private *dev_priv,
struct vmw_buffer_object *buf,
interruptible);
}
+
/**
* vmw_bo_pin_in_start_of_vram - Move a buffer to start of vram.
*
* @dev_priv: Driver private.
* @buf: DMA buffer to pin.
* @interruptible: Use interruptible wait.
- *
- * Returns
- * -ERESTARTSYS if interrupted by a signal.
+ * Return: Zero on success, Negative error code on failure. In particular
+ * -ERESTARTSYS if interrupted by a signal
*/
int vmw_bo_pin_in_start_of_vram(struct vmw_private *dev_priv,
struct vmw_buffer_object *buf,
return ret;
}
+
/**
* vmw_bo_unpin - Unpin the buffer given buffer, does not move the buffer.
*
* @dev_priv: Driver private.
* @buf: DMA buffer to unpin.
* @interruptible: Use interruptible wait.
- *
- * Returns
- * -ERESTARTSYS if interrupted by a signal.
+ * Return: Zero on success, Negative error code on failure. In particular
+ * -ERESTARTSYS if interrupted by a signal
*/
int vmw_bo_unpin(struct vmw_private *dev_priv,
struct vmw_buffer_object *buf,
}
-/*
- * vmw_buffer_object_unmap - Tear down a cached buffer object map.
- *
- * @vbo: The buffer object whose map we are tearing down.
- *
- * This function tears down a cached map set up using
- * vmw_buffer_object_map_and_cache().
- */
-void vmw_buffer_object_unmap(struct vmw_buffer_object *vbo)
-{
- if (vbo->map.bo == NULL)
- return;
-
- ttm_bo_kunmap(&vbo->map);
-}
-
-
-/*
- * vmw_buffer_object_map_and_cache - Map a buffer object and cache the map
+/**
+ * vmw_bo_map_and_cache - Map a buffer object and cache the map
*
* @vbo: The buffer object to map
* Return: A kernel virtual address or NULL if mapping failed.
* 3) Buffer object destruction
*
*/
-void *vmw_buffer_object_map_and_cache(struct vmw_buffer_object *vbo)
+void *vmw_bo_map_and_cache(struct vmw_buffer_object *vbo)
{
struct ttm_buffer_object *bo = &vbo->base;
bool not_used;
return ttm_kmap_obj_virtual(&vbo->map, ¬_used);
}
+
+
+/**
+ * vmw_bo_unmap - Tear down a cached buffer object map.
+ *
+ * @vbo: The buffer object whose map we are tearing down.
+ *
+ * This function tears down a cached map set up using
+ * vmw_buffer_object_map_and_cache().
+ */
+void vmw_bo_unmap(struct vmw_buffer_object *vbo)
+{
+ if (vbo->map.bo == NULL)
+ return;
+
+ ttm_bo_kunmap(&vbo->map);
+}
+
+
+/**
+ * vmw_bo_acc_size - Calculate the pinned memory usage of buffers
+ *
+ * @dev_priv: Pointer to a struct vmw_private identifying the device.
+ * @size: The requested buffer size.
+ * @user: Whether this is an ordinary dma buffer or a user dma buffer.
+ */
+static size_t vmw_bo_acc_size(struct vmw_private *dev_priv, size_t size,
+ bool user)
+{
+ static size_t struct_size, user_struct_size;
+ size_t num_pages = PAGE_ALIGN(size) >> PAGE_SHIFT;
+ size_t page_array_size = ttm_round_pot(num_pages * sizeof(void *));
+
+ if (unlikely(struct_size == 0)) {
+ size_t backend_size = ttm_round_pot(vmw_tt_size);
+
+ struct_size = backend_size +
+ ttm_round_pot(sizeof(struct vmw_buffer_object));
+ user_struct_size = backend_size +
+ ttm_round_pot(sizeof(struct vmw_user_buffer_object));
+ }
+
+ if (dev_priv->map_mode == vmw_dma_alloc_coherent)
+ page_array_size +=
+ ttm_round_pot(num_pages * sizeof(dma_addr_t));
+
+ return ((user) ? user_struct_size : struct_size) +
+ page_array_size;
+}
+
+
+/**
+ * vmw_bo_bo_free - vmw buffer object destructor
+ *
+ * @bo: Pointer to the embedded struct ttm_buffer_object
+ */
+void vmw_bo_bo_free(struct ttm_buffer_object *bo)
+{
+ struct vmw_buffer_object *vmw_bo = vmw_buffer_object(bo);
+
+ vmw_bo_unmap(vmw_bo);
+ kfree(vmw_bo);
+}
+
+
+/**
+ * vmw_user_bo_destroy - vmw buffer object destructor
+ *
+ * @bo: Pointer to the embedded struct ttm_buffer_object
+ */
+static void vmw_user_bo_destroy(struct ttm_buffer_object *bo)
+{
+ struct vmw_user_buffer_object *vmw_user_bo = vmw_user_buffer_object(bo);
+
+ vmw_bo_unmap(&vmw_user_bo->vbo);
+ ttm_prime_object_kfree(vmw_user_bo, prime);
+}
+
+
+/**
+ * vmw_bo_init - Initialize a vmw buffer object
+ *
+ * @dev_priv: Pointer to the device private struct
+ * @vmw_bo: Pointer to the struct vmw_buffer_object to initialize.
+ * @size: Buffer object size in bytes.
+ * @placement: Initial placement.
+ * @interruptible: Whether waits should be performed interruptible.
+ * @bo_free: The buffer object destructor.
+ * Returns: Zero on success, negative error code on error.
+ *
+ * Note that on error, the code will free the buffer object.
+ */
+int vmw_bo_init(struct vmw_private *dev_priv,
+ struct vmw_buffer_object *vmw_bo,
+ size_t size, struct ttm_placement *placement,
+ bool interruptible,
+ void (*bo_free)(struct ttm_buffer_object *bo))
+{
+ struct ttm_bo_device *bdev = &dev_priv->bdev;
+ size_t acc_size;
+ int ret;
+ bool user = (bo_free == &vmw_user_bo_destroy);
+
+ WARN_ON_ONCE(!bo_free && (!user && (bo_free != vmw_bo_bo_free)));
+
+ acc_size = vmw_bo_acc_size(dev_priv, size, user);
+ memset(vmw_bo, 0, sizeof(*vmw_bo));
+
+ INIT_LIST_HEAD(&vmw_bo->res_list);
+
+ ret = ttm_bo_init(bdev, &vmw_bo->base, size,
+ ttm_bo_type_device, placement,
+ 0, interruptible, acc_size,
+ NULL, NULL, bo_free);
+ return ret;
+}
+
+
+/**
+ * vmw_user_bo_release - TTM reference base object release callback for
+ * vmw user buffer objects
+ *
+ * @p_base: The TTM base object pointer about to be unreferenced.
+ *
+ * Clears the TTM base object pointer and drops the reference the
+ * base object has on the underlying struct vmw_buffer_object.
+ */
+static void vmw_user_bo_release(struct ttm_base_object **p_base)
+{
+ struct vmw_user_buffer_object *vmw_user_bo;
+ struct ttm_base_object *base = *p_base;
+ struct ttm_buffer_object *bo;
+
+ *p_base = NULL;
+
+ if (unlikely(base == NULL))
+ return;
+
+ vmw_user_bo = container_of(base, struct vmw_user_buffer_object,
+ prime.base);
+ bo = &vmw_user_bo->vbo.base;
+ ttm_bo_unref(&bo);
+}
+
+
+/**
+ * vmw_user_bo_ref_obj-release - TTM synccpu reference object release callback
+ * for vmw user buffer objects
+ *
+ * @base: Pointer to the TTM base object
+ * @ref_type: Reference type of the reference reaching zero.
+ *
+ * Called when user-space drops its last synccpu reference on the buffer
+ * object, Either explicitly or as part of a cleanup file close.
+ */
+static void vmw_user_bo_ref_obj_release(struct ttm_base_object *base,
+ enum ttm_ref_type ref_type)
+{
+ struct vmw_user_buffer_object *user_bo;
+
+ user_bo = container_of(base, struct vmw_user_buffer_object, prime.base);
+
+ switch (ref_type) {
+ case TTM_REF_SYNCCPU_WRITE:
+ ttm_bo_synccpu_write_release(&user_bo->vbo.base);
+ break;
+ default:
+ WARN_ONCE(true, "Undefined buffer object reference release.\n");
+ }
+}
+
+
+/**
+ * vmw_user_bo_alloc - Allocate a user buffer object
+ *
+ * @dev_priv: Pointer to a struct device private.
+ * @tfile: Pointer to a struct ttm_object_file on which to register the user
+ * object.
+ * @size: Size of the buffer object.
+ * @shareable: Boolean whether the buffer is shareable with other open files.
+ * @handle: Pointer to where the handle value should be assigned.
+ * @p_vbo: Pointer to where the refcounted struct vmw_buffer_object pointer
+ * should be assigned.
+ * Return: Zero on success, negative error code on error.
+ */
+int vmw_user_bo_alloc(struct vmw_private *dev_priv,
+ struct ttm_object_file *tfile,
+ uint32_t size,
+ bool shareable,
+ uint32_t *handle,
+ struct vmw_buffer_object **p_vbo,
+ struct ttm_base_object **p_base)
+{
+ struct vmw_user_buffer_object *user_bo;
+ struct ttm_buffer_object *tmp;
+ int ret;
+
+ user_bo = kzalloc(sizeof(*user_bo), GFP_KERNEL);
+ if (unlikely(!user_bo)) {
+ DRM_ERROR("Failed to allocate a buffer.\n");
+ return -ENOMEM;
+ }
+
+ ret = vmw_bo_init(dev_priv, &user_bo->vbo, size,
+ (dev_priv->has_mob) ?
+ &vmw_sys_placement :
+ &vmw_vram_sys_placement, true,
+ &vmw_user_bo_destroy);
+ if (unlikely(ret != 0))
+ return ret;
+
+ tmp = ttm_bo_reference(&user_bo->vbo.base);
+ ret = ttm_prime_object_init(tfile,
+ size,
+ &user_bo->prime,
+ shareable,
+ ttm_buffer_type,
+ &vmw_user_bo_release,
+ &vmw_user_bo_ref_obj_release);
+ if (unlikely(ret != 0)) {
+ ttm_bo_unref(&tmp);
+ goto out_no_base_object;
+ }
+
+ *p_vbo = &user_bo->vbo;
+ if (p_base) {
+ *p_base = &user_bo->prime.base;
+ kref_get(&(*p_base)->refcount);
+ }
+ *handle = user_bo->prime.base.hash.key;
+
+out_no_base_object:
+ return ret;
+}
+
+
+/**
+ * vmw_user_bo_verify_access - verify access permissions on this
+ * buffer object.
+ *
+ * @bo: Pointer to the buffer object being accessed
+ * @tfile: Identifying the caller.
+ */
+int vmw_user_bo_verify_access(struct ttm_buffer_object *bo,
+ struct ttm_object_file *tfile)
+{
+ struct vmw_user_buffer_object *vmw_user_bo;
+
+ if (unlikely(bo->destroy != vmw_user_bo_destroy))
+ return -EPERM;
+
+ vmw_user_bo = vmw_user_buffer_object(bo);
+
+ /* Check that the caller has opened the object. */
+ if (likely(ttm_ref_object_exists(tfile, &vmw_user_bo->prime.base)))
+ return 0;
+
+ DRM_ERROR("Could not grant buffer access.\n");
+ return -EPERM;
+}
+
+
+/**
+ * vmw_user_bo_synccpu_grab - Grab a struct vmw_user_buffer_object for cpu
+ * access, idling previous GPU operations on the buffer and optionally
+ * blocking it for further command submissions.
+ *
+ * @user_bo: Pointer to the buffer object being grabbed for CPU access
+ * @tfile: Identifying the caller.
+ * @flags: Flags indicating how the grab should be performed.
+ * Return: Zero on success, Negative error code on error. In particular,
+ * -EBUSY will be returned if a dontblock operation is requested and the
+ * buffer object is busy, and -ERESTARTSYS will be returned if a wait is
+ * interrupted by a signal.
+ *
+ * A blocking grab will be automatically released when @tfile is closed.
+ */
+static int vmw_user_bo_synccpu_grab(struct vmw_user_buffer_object *user_bo,
+ struct ttm_object_file *tfile,
+ uint32_t flags)
+{
+ struct ttm_buffer_object *bo = &user_bo->vbo.base;
+ bool existed;
+ int ret;
+
+ if (flags & drm_vmw_synccpu_allow_cs) {
+ bool nonblock = !!(flags & drm_vmw_synccpu_dontblock);
+ long lret;
+
+ lret = reservation_object_wait_timeout_rcu
+ (bo->resv, true, true,
+ nonblock ? 0 : MAX_SCHEDULE_TIMEOUT);
+ if (!lret)
+ return -EBUSY;
+ else if (lret < 0)
+ return lret;
+ return 0;
+ }
+
+ ret = ttm_bo_synccpu_write_grab
+ (bo, !!(flags & drm_vmw_synccpu_dontblock));
+ if (unlikely(ret != 0))
+ return ret;
+
+ ret = ttm_ref_object_add(tfile, &user_bo->prime.base,
+ TTM_REF_SYNCCPU_WRITE, &existed, false);
+ if (ret != 0 || existed)
+ ttm_bo_synccpu_write_release(&user_bo->vbo.base);
+
+ return ret;
+}
+
+/**
+ * vmw_user_bo_synccpu_release - Release a previous grab for CPU access,
+ * and unblock command submission on the buffer if blocked.
+ *
+ * @handle: Handle identifying the buffer object.
+ * @tfile: Identifying the caller.
+ * @flags: Flags indicating the type of release.
+ */
+static int vmw_user_bo_synccpu_release(uint32_t handle,
+ struct ttm_object_file *tfile,
+ uint32_t flags)
+{
+ if (!(flags & drm_vmw_synccpu_allow_cs))
+ return ttm_ref_object_base_unref(tfile, handle,
+ TTM_REF_SYNCCPU_WRITE);
+
+ return 0;
+}
+
+
+/**
+ * vmw_user_bo_synccpu_ioctl - ioctl function implementing the synccpu
+ * functionality.
+ *
+ * @dev: Identifies the drm device.
+ * @data: Pointer to the ioctl argument.
+ * @file_priv: Identifies the caller.
+ * Return: Zero on success, negative error code on error.
+ *
+ * This function checks the ioctl arguments for validity and calls the
+ * relevant synccpu functions.
+ */
+int vmw_user_bo_synccpu_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_vmw_synccpu_arg *arg =
+ (struct drm_vmw_synccpu_arg *) data;
+ struct vmw_buffer_object *vbo;
+ struct vmw_user_buffer_object *user_bo;
+ struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
+ struct ttm_base_object *buffer_base;
+ int ret;
+
+ if ((arg->flags & (drm_vmw_synccpu_read | drm_vmw_synccpu_write)) == 0
+ || (arg->flags & ~(drm_vmw_synccpu_read | drm_vmw_synccpu_write |
+ drm_vmw_synccpu_dontblock |
+ drm_vmw_synccpu_allow_cs)) != 0) {
+ DRM_ERROR("Illegal synccpu flags.\n");
+ return -EINVAL;
+ }
+
+ switch (arg->op) {
+ case drm_vmw_synccpu_grab:
+ ret = vmw_user_bo_lookup(tfile, arg->handle, &vbo,
+ &buffer_base);
+ if (unlikely(ret != 0))
+ return ret;
+
+ user_bo = container_of(vbo, struct vmw_user_buffer_object,
+ vbo);
+ ret = vmw_user_bo_synccpu_grab(user_bo, tfile, arg->flags);
+ vmw_bo_unreference(&vbo);
+ ttm_base_object_unref(&buffer_base);
+ if (unlikely(ret != 0 && ret != -ERESTARTSYS &&
+ ret != -EBUSY)) {
+ DRM_ERROR("Failed synccpu grab on handle 0x%08x.\n",
+ (unsigned int) arg->handle);
+ return ret;
+ }
+ break;
+ case drm_vmw_synccpu_release:
+ ret = vmw_user_bo_synccpu_release(arg->handle, tfile,
+ arg->flags);
+ if (unlikely(ret != 0)) {
+ DRM_ERROR("Failed synccpu release on handle 0x%08x.\n",
+ (unsigned int) arg->handle);
+ return ret;
+ }
+ break;
+ default:
+ DRM_ERROR("Invalid synccpu operation.\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+
+/**
+ * vmw_bo_alloc_ioctl - ioctl function implementing the buffer object
+ * allocation functionality.
+ *
+ * @dev: Identifies the drm device.
+ * @data: Pointer to the ioctl argument.
+ * @file_priv: Identifies the caller.
+ * Return: Zero on success, negative error code on error.
+ *
+ * This function checks the ioctl arguments for validity and allocates a
+ * struct vmw_user_buffer_object bo.
+ */
+int vmw_bo_alloc_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct vmw_private *dev_priv = vmw_priv(dev);
+ union drm_vmw_alloc_dmabuf_arg *arg =
+ (union drm_vmw_alloc_dmabuf_arg *)data;
+ struct drm_vmw_alloc_dmabuf_req *req = &arg->req;
+ struct drm_vmw_dmabuf_rep *rep = &arg->rep;
+ struct vmw_buffer_object *vbo;
+ uint32_t handle;
+ int ret;
+
+ ret = ttm_read_lock(&dev_priv->reservation_sem, true);
+ if (unlikely(ret != 0))
+ return ret;
+
+ ret = vmw_user_bo_alloc(dev_priv, vmw_fpriv(file_priv)->tfile,
+ req->size, false, &handle, &vbo,
+ NULL);
+ if (unlikely(ret != 0))
+ goto out_no_bo;
+
+ rep->handle = handle;
+ rep->map_handle = drm_vma_node_offset_addr(&vbo->base.vma_node);
+ rep->cur_gmr_id = handle;
+ rep->cur_gmr_offset = 0;
+
+ vmw_bo_unreference(&vbo);
+
+out_no_bo:
+ ttm_read_unlock(&dev_priv->reservation_sem);
+
+ return ret;
+}
+
+
+/**
+ * vmw_bo_unref_ioctl - Generic handle close ioctl.
+ *
+ * @dev: Identifies the drm device.
+ * @data: Pointer to the ioctl argument.
+ * @file_priv: Identifies the caller.
+ * Return: Zero on success, negative error code on error.
+ *
+ * This function checks the ioctl arguments for validity and closes a
+ * handle to a TTM base object, optionally freeing the object.
+ */
+int vmw_bo_unref_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_vmw_unref_dmabuf_arg *arg =
+ (struct drm_vmw_unref_dmabuf_arg *)data;
+
+ return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile,
+ arg->handle,
+ TTM_REF_USAGE);
+}
+
+
+/**
+ * vmw_user_bo_lookup - Look up a vmw user buffer object from a handle.
+ *
+ * @tfile: The TTM object file the handle is registered with.
+ * @handle: The user buffer object handle
+ * @out: Pointer to a where a pointer to the embedded
+ * struct vmw_buffer_object should be placed.
+ * @p_base: Pointer to where a pointer to the TTM base object should be
+ * placed, or NULL if no such pointer is required.
+ * Return: Zero on success, Negative error code on error.
+ *
+ * Both the output base object pointer and the vmw buffer object pointer
+ * will be refcounted.
+ */
+int vmw_user_bo_lookup(struct ttm_object_file *tfile,
+ uint32_t handle, struct vmw_buffer_object **out,
+ struct ttm_base_object **p_base)
+{
+ struct vmw_user_buffer_object *vmw_user_bo;
+ struct ttm_base_object *base;
+
+ base = ttm_base_object_lookup(tfile, handle);
+ if (unlikely(base == NULL)) {
+ DRM_ERROR("Invalid buffer object handle 0x%08lx.\n",
+ (unsigned long)handle);
+ return -ESRCH;
+ }
+
+ if (unlikely(ttm_base_object_type(base) != ttm_buffer_type)) {
+ ttm_base_object_unref(&base);
+ DRM_ERROR("Invalid buffer object handle 0x%08lx.\n",
+ (unsigned long)handle);
+ return -EINVAL;
+ }
+
+ vmw_user_bo = container_of(base, struct vmw_user_buffer_object,
+ prime.base);
+ (void)ttm_bo_reference(&vmw_user_bo->vbo.base);
+ if (p_base)
+ *p_base = base;
+ else
+ ttm_base_object_unref(&base);
+ *out = &vmw_user_bo->vbo;
+
+ return 0;
+}
+
+
+/**
+ * vmw_user_bo_reference - Open a handle to a vmw user buffer object.
+ *
+ * @tfile: The TTM object file to register the handle with.
+ * @vbo: The embedded vmw buffer object.
+ * @handle: Pointer to where the new handle should be placed.
+ * Return: Zero on success, Negative error code on error.
+ */
+int vmw_user_bo_reference(struct ttm_object_file *tfile,
+ struct vmw_buffer_object *vbo,
+ uint32_t *handle)
+{
+ struct vmw_user_buffer_object *user_bo;
+
+ if (vbo->base.destroy != vmw_user_bo_destroy)
+ return -EINVAL;
+
+ user_bo = container_of(vbo, struct vmw_user_buffer_object, vbo);
+
+ *handle = user_bo->prime.base.hash.key;
+ return ttm_ref_object_add(tfile, &user_bo->prime.base,
+ TTM_REF_USAGE, NULL, false);
+}
+
+
+/**
+ * vmw_bo_fence_single - Utility function to fence a single TTM buffer
+ * object without unreserving it.
+ *
+ * @bo: Pointer to the struct ttm_buffer_object to fence.
+ * @fence: Pointer to the fence. If NULL, this function will
+ * insert a fence into the command stream..
+ *
+ * Contrary to the ttm_eu version of this function, it takes only
+ * a single buffer object instead of a list, and it also doesn't
+ * unreserve the buffer object, which needs to be done separately.
+ */
+void vmw_bo_fence_single(struct ttm_buffer_object *bo,
+ struct vmw_fence_obj *fence)
+{
+ struct ttm_bo_device *bdev = bo->bdev;
+
+ struct vmw_private *dev_priv =
+ container_of(bdev, struct vmw_private, bdev);
+
+ if (fence == NULL) {
+ vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
+ reservation_object_add_excl_fence(bo->resv, &fence->base);
+ dma_fence_put(&fence->base);
+ } else
+ reservation_object_add_excl_fence(bo->resv, &fence->base);
+}
+
+
+/**
+ * vmw_dumb_create - Create a dumb kms buffer
+ *
+ * @file_priv: Pointer to a struct drm_file identifying the caller.
+ * @dev: Pointer to the drm device.
+ * @args: Pointer to a struct drm_mode_create_dumb structure
+ * Return: Zero on success, negative error code on failure.
+ *
+ * This is a driver callback for the core drm create_dumb functionality.
+ * Note that this is very similar to the vmw_bo_alloc ioctl, except
+ * that the arguments have a different format.
+ */
+int vmw_dumb_create(struct drm_file *file_priv,
+ struct drm_device *dev,
+ struct drm_mode_create_dumb *args)
+{
+ struct vmw_private *dev_priv = vmw_priv(dev);
+ struct vmw_buffer_object *vbo;
+ int ret;
+
+ args->pitch = args->width * ((args->bpp + 7) / 8);
+ args->size = args->pitch * args->height;
+
+ ret = ttm_read_lock(&dev_priv->reservation_sem, true);
+ if (unlikely(ret != 0))
+ return ret;
+
+ ret = vmw_user_bo_alloc(dev_priv, vmw_fpriv(file_priv)->tfile,
+ args->size, false, &args->handle,
+ &vbo, NULL);
+ if (unlikely(ret != 0))
+ goto out_no_bo;
+
+ vmw_bo_unreference(&vbo);
+out_no_bo:
+ ttm_read_unlock(&dev_priv->reservation_sem);
+ return ret;
+}
+
+
+/**
+ * vmw_dumb_map_offset - Return the address space offset of a dumb buffer
+ *
+ * @file_priv: Pointer to a struct drm_file identifying the caller.
+ * @dev: Pointer to the drm device.
+ * @handle: Handle identifying the dumb buffer.
+ * @offset: The address space offset returned.
+ * Return: Zero on success, negative error code on failure.
+ *
+ * This is a driver callback for the core drm dumb_map_offset functionality.
+ */
+int vmw_dumb_map_offset(struct drm_file *file_priv,
+ struct drm_device *dev, uint32_t handle,
+ uint64_t *offset)
+{
+ struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
+ struct vmw_buffer_object *out_buf;
+ int ret;
+
+ ret = vmw_user_bo_lookup(tfile, handle, &out_buf, NULL);
+ if (ret != 0)
+ return -EINVAL;
+
+ *offset = drm_vma_node_offset_addr(&out_buf->base.vma_node);
+ vmw_bo_unreference(&out_buf);
+ return 0;
+}
+
+
+/**
+ * vmw_dumb_destroy - Destroy a dumb boffer
+ *
+ * @file_priv: Pointer to a struct drm_file identifying the caller.
+ * @dev: Pointer to the drm device.
+ * @handle: Handle identifying the dumb buffer.
+ * Return: Zero on success, negative error code on failure.
+ *
+ * This is a driver callback for the core drm dumb_destroy functionality.
+ */
+int vmw_dumb_destroy(struct drm_file *file_priv,
+ struct drm_device *dev,
+ uint32_t handle)
+{
+ return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile,
+ handle, TTM_REF_USAGE);
+}
+
+
+/**
+ * vmw_bo_swap_notify - swapout notify callback.
+ *
+ * @bo: The buffer object to be swapped out.
+ */
+void vmw_bo_swap_notify(struct ttm_buffer_object *bo)
+{
+ /* Is @bo embedded in a struct vmw_buffer_object? */
+ if (bo->destroy != vmw_bo_bo_free &&
+ bo->destroy != vmw_user_bo_destroy)
+ return;
+
+ /* Kill any cached kernel maps before swapout */
+ vmw_bo_unmap(vmw_buffer_object(bo));
+}
+
+
+/**
+ * vmw_bo_move_notify - TTM move_notify_callback
+ *
+ * @bo: The TTM buffer object about to move.
+ * @mem: The struct ttm_mem_reg indicating to what memory
+ * region the move is taking place.
+ *
+ * Detaches cached maps and device bindings that require that the
+ * buffer doesn't move.
+ */
+void vmw_bo_move_notify(struct ttm_buffer_object *bo,
+ struct ttm_mem_reg *mem)
+{
+ struct vmw_buffer_object *vbo;
+
+ if (mem == NULL)
+ return;
+
+ /* Make sure @bo is embedded in a struct vmw_buffer_object? */
+ if (bo->destroy != vmw_bo_bo_free &&
+ bo->destroy != vmw_user_bo_destroy)
+ return;
+
+ vbo = container_of(bo, struct vmw_buffer_object, base);
+
+ /*
+ * Kill any cached kernel maps before move. An optimization could
+ * be to do this iff source or destination memory type is in VRAM.
+ */
+ vmw_bo_unmap(vbo);
+
+ /*
+ * If we're moving a backup MOB out of MOB placement, then make sure we
+ * read back all resource content first, and unbind the MOB from
+ * the resource.
+ */
+ if (mem->mem_type != VMW_PL_MOB)
+ vmw_resource_unbind_list(vbo);
+}
(void) vmw_execbuf_fence_commands(NULL, dev_priv,
&fence, NULL);
- vmw_fence_single_bo(bo, fence);
+ vmw_bo_fence_single(bo, fence);
if (likely(fence != NULL))
vmw_fence_obj_unreference(&fence);
(void) vmw_execbuf_fence_commands(NULL, dev_priv,
&fence, NULL);
- vmw_fence_single_bo(bo, fence);
+ vmw_bo_fence_single(bo, fence);
if (likely(fence != NULL))
vmw_fence_obj_unreference(&fence);
vmw_dx_context_scrub_cotables(vcotbl->ctx, readback);
mutex_unlock(&dev_priv->binding_mutex);
(void) vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
- vmw_fence_single_bo(bo, fence);
+ vmw_bo_fence_single(bo, fence);
if (likely(fence != NULL))
vmw_fence_obj_unreference(&fence);
}
(void) vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
- vmw_fence_single_bo(&res->backup->base, fence);
+ vmw_bo_fence_single(&res->backup->base, fence);
vmw_fence_obj_unreference(&fence);
return 0;
uint32_t handle,
const struct vmw_user_resource_conv *converter,
struct vmw_resource **p_res);
-extern void vmw_bo_bo_free(struct ttm_buffer_object *bo);
-extern int vmw_bo_init(struct vmw_private *dev_priv,
- struct vmw_buffer_object *vmw_bo,
- size_t size, struct ttm_placement *placement,
- bool interuptable,
- void (*bo_free)(struct ttm_buffer_object *bo));
-extern int vmw_user_bo_verify_access(struct ttm_buffer_object *bo,
- struct ttm_object_file *tfile);
-extern int vmw_user_bo_alloc(struct vmw_private *dev_priv,
- struct ttm_object_file *tfile,
- uint32_t size,
- bool shareable,
- uint32_t *handle,
- struct vmw_buffer_object **p_dma_buf,
- struct ttm_base_object **p_base);
-extern int vmw_user_bo_reference(struct ttm_object_file *tfile,
- struct vmw_buffer_object *dma_buf,
- uint32_t *handle);
-extern int vmw_bo_alloc_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv);
-extern int vmw_bo_unref_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv);
-extern int vmw_user_bo_synccpu_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv);
-extern uint32_t vmw_bo_validate_node(struct ttm_buffer_object *bo,
- uint32_t cur_validate_node);
-extern void vmw_bo_validate_clear(struct ttm_buffer_object *bo);
-extern int vmw_user_bo_lookup(struct ttm_object_file *tfile,
- uint32_t id, struct vmw_buffer_object **out,
- struct ttm_base_object **base);
extern int vmw_stream_claim_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_stream_unref_ioctl(struct drm_device *dev, void *data,
bool switch_backup,
struct vmw_buffer_object *new_backup,
unsigned long new_backup_offset);
-extern void vmw_resource_move_notify(struct ttm_buffer_object *bo,
- struct ttm_mem_reg *mem);
extern void vmw_query_move_notify(struct ttm_buffer_object *bo,
struct ttm_mem_reg *mem);
-extern void vmw_resource_swap_notify(struct ttm_buffer_object *bo);
extern int vmw_query_readback_all(struct vmw_buffer_object *dx_query_mob);
-extern void vmw_fence_single_bo(struct ttm_buffer_object *bo,
- struct vmw_fence_obj *fence);
extern void vmw_resource_evict_all(struct vmw_private *dev_priv);
-
+extern void vmw_resource_unbind_list(struct vmw_buffer_object *vbo);
/**
* Buffer object helper functions - vmwgfx_bo.c
extern void vmw_bo_get_guest_ptr(const struct ttm_buffer_object *buf,
SVGAGuestPtr *ptr);
extern void vmw_bo_pin_reserved(struct vmw_buffer_object *bo, bool pin);
-extern void *vmw_buffer_object_map_and_cache(struct vmw_buffer_object *vbo);
-extern void vmw_buffer_object_unmap(struct vmw_buffer_object *vbo);
+extern void vmw_bo_bo_free(struct ttm_buffer_object *bo);
+extern int vmw_bo_init(struct vmw_private *dev_priv,
+ struct vmw_buffer_object *vmw_bo,
+ size_t size, struct ttm_placement *placement,
+ bool interuptable,
+ void (*bo_free)(struct ttm_buffer_object *bo));
+extern int vmw_user_bo_verify_access(struct ttm_buffer_object *bo,
+ struct ttm_object_file *tfile);
+extern int vmw_user_bo_alloc(struct vmw_private *dev_priv,
+ struct ttm_object_file *tfile,
+ uint32_t size,
+ bool shareable,
+ uint32_t *handle,
+ struct vmw_buffer_object **p_dma_buf,
+ struct ttm_base_object **p_base);
+extern int vmw_user_bo_reference(struct ttm_object_file *tfile,
+ struct vmw_buffer_object *dma_buf,
+ uint32_t *handle);
+extern int vmw_bo_alloc_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+extern int vmw_bo_unref_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+extern int vmw_user_bo_synccpu_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+extern int vmw_user_bo_lookup(struct ttm_object_file *tfile,
+ uint32_t id, struct vmw_buffer_object **out,
+ struct ttm_base_object **base);
+extern void vmw_bo_fence_single(struct ttm_buffer_object *bo,
+ struct vmw_fence_obj *fence);
+extern void *vmw_bo_map_and_cache(struct vmw_buffer_object *vbo);
+extern void vmw_bo_unmap(struct vmw_buffer_object *vbo);
+extern void vmw_bo_move_notify(struct ttm_buffer_object *bo,
+ struct ttm_mem_reg *mem);
+extern void vmw_bo_swap_notify(struct ttm_buffer_object *bo);
/**
* Misc Ioctl functionality - vmwgfx_ioctl.c
(void) ttm_read_lock(&vmw_priv->reservation_sem, false);
(void) ttm_bo_reserve(&vbo->base, false, false, NULL);
- virtual = vmw_buffer_object_map_and_cache(vbo);
+ virtual = vmw_bo_map_and_cache(vbo);
if (!virtual)
goto out_unreserve;
ret = vmw_execbuf_fence_commands(file_priv, dev_priv, &fence,
file_priv ? &handle : NULL);
if (buf)
- vmw_fence_single_bo(&buf->base, fence);
+ vmw_bo_fence_single(&buf->base, fence);
if (file_priv)
vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv),
ret, user_fence_rep, fence,
ret = ttm_bo_reserve(bo, false, true, NULL);
BUG_ON(ret != 0);
- vmw_fence_single_bo(bo, NULL);
+ vmw_bo_fence_single(bo, NULL);
ttm_bo_unreserve(bo);
}
ret = ttm_bo_reserve(bo, false, true, NULL);
BUG_ON(ret != 0);
- vmw_fence_single_bo(bo, NULL);
+ vmw_bo_fence_single(bo, NULL);
ttm_bo_unreserve(bo);
ttm_bo_unref(&batch->otable_bo);
vmw_fifo_commit(dev_priv, sizeof(*cmd));
}
if (bo) {
- vmw_fence_single_bo(bo, NULL);
+ vmw_bo_fence_single(bo, NULL);
ttm_bo_unreserve(bo);
}
vmw_fifo_resource_dec(dev_priv);
#include "vmwgfx_drv.h"
#include <drm/vmwgfx_drm.h>
-#include <drm/ttm/ttm_object.h>
#include <drm/ttm/ttm_placement.h>
#include <drm/drmP.h>
#include "vmwgfx_resource_priv.h"
#define VMW_RES_EVICT_ERR_COUNT 10
-struct vmw_user_buffer_object {
- struct ttm_prime_object prime;
- struct vmw_buffer_object vbo;
-};
-
-struct vmw_bo_user_rep {
- uint32_t handle;
- uint64_t map_handle;
-};
-
-static inline struct vmw_buffer_object *
-vmw_buffer_object(struct ttm_buffer_object *bo)
-{
- return container_of(bo, struct vmw_buffer_object, base);
-}
-
-static inline struct vmw_user_buffer_object *
-vmw_user_buffer_object(struct ttm_buffer_object *bo)
-{
- struct vmw_buffer_object *vmw_bo = vmw_buffer_object(bo);
-
- return container_of(vmw_bo, struct vmw_user_buffer_object, vbo);
-}
-
struct vmw_resource *vmw_resource_reference(struct vmw_resource *res)
{
kref_get(&res->kref);
return ret;
}
-/**
- * Buffer management.
- */
-
-/**
- * vmw_bo_acc_size - Calculate the pinned memory usage of buffers
- *
- * @dev_priv: Pointer to a struct vmw_private identifying the device.
- * @size: The requested buffer size.
- * @user: Whether this is an ordinary dma buffer or a user dma buffer.
- */
-static size_t vmw_bo_acc_size(struct vmw_private *dev_priv, size_t size,
- bool user)
-{
- static size_t struct_size, user_struct_size;
- size_t num_pages = PAGE_ALIGN(size) >> PAGE_SHIFT;
- size_t page_array_size = ttm_round_pot(num_pages * sizeof(void *));
-
- if (unlikely(struct_size == 0)) {
- size_t backend_size = ttm_round_pot(vmw_tt_size);
-
- struct_size = backend_size +
- ttm_round_pot(sizeof(struct vmw_buffer_object));
- user_struct_size = backend_size +
- ttm_round_pot(sizeof(struct vmw_user_buffer_object));
- }
-
- if (dev_priv->map_mode == vmw_dma_alloc_coherent)
- page_array_size +=
- ttm_round_pot(num_pages * sizeof(dma_addr_t));
-
- return ((user) ? user_struct_size : struct_size) +
- page_array_size;
-}
-
-void vmw_bo_bo_free(struct ttm_buffer_object *bo)
-{
- struct vmw_buffer_object *vmw_bo = vmw_buffer_object(bo);
-
- vmw_buffer_object_unmap(vmw_bo);
- kfree(vmw_bo);
-}
-
-static void vmw_user_bo_destroy(struct ttm_buffer_object *bo)
-{
- struct vmw_user_buffer_object *vmw_user_bo = vmw_user_buffer_object(bo);
-
- vmw_buffer_object_unmap(&vmw_user_bo->vbo);
- ttm_prime_object_kfree(vmw_user_bo, prime);
-}
-
-int vmw_bo_init(struct vmw_private *dev_priv,
- struct vmw_buffer_object *vmw_bo,
- size_t size, struct ttm_placement *placement,
- bool interruptible,
- void (*bo_free)(struct ttm_buffer_object *bo))
-{
- struct ttm_bo_device *bdev = &dev_priv->bdev;
- size_t acc_size;
- int ret;
- bool user = (bo_free == &vmw_user_bo_destroy);
-
- WARN_ON_ONCE(!bo_free && (!user && (bo_free != vmw_bo_bo_free)));
-
- acc_size = vmw_bo_acc_size(dev_priv, size, user);
- memset(vmw_bo, 0, sizeof(*vmw_bo));
-
- INIT_LIST_HEAD(&vmw_bo->res_list);
-
- ret = ttm_bo_init(bdev, &vmw_bo->base, size,
- ttm_bo_type_device, placement,
- 0, interruptible, acc_size,
- NULL, NULL, bo_free);
- return ret;
-}
-
-static void vmw_user_bo_release(struct ttm_base_object **p_base)
-{
- struct vmw_user_buffer_object *vmw_user_bo;
- struct ttm_base_object *base = *p_base;
- struct ttm_buffer_object *bo;
-
- *p_base = NULL;
-
- if (unlikely(base == NULL))
- return;
-
- vmw_user_bo = container_of(base, struct vmw_user_buffer_object,
- prime.base);
- bo = &vmw_user_bo->vbo.base;
- ttm_bo_unref(&bo);
-}
-
-static void vmw_user_bo_ref_obj_release(struct ttm_base_object *base,
- enum ttm_ref_type ref_type)
-{
- struct vmw_user_buffer_object *user_bo;
-
- user_bo = container_of(base, struct vmw_user_buffer_object, prime.base);
-
- switch (ref_type) {
- case TTM_REF_SYNCCPU_WRITE:
- ttm_bo_synccpu_write_release(&user_bo->vbo.base);
- break;
- default:
- BUG();
- }
-}
-
-/**
- * vmw_user_bo_alloc - Allocate a user dma buffer
- *
- * @dev_priv: Pointer to a struct device private.
- * @tfile: Pointer to a struct ttm_object_file on which to register the user
- * object.
- * @size: Size of the dma buffer.
- * @shareable: Boolean whether the buffer is shareable with other open files.
- * @handle: Pointer to where the handle value should be assigned.
- * @p_vbo: Pointer to where the refcounted struct vmw_buffer_object pointer
- * should be assigned.
- */
-int vmw_user_bo_alloc(struct vmw_private *dev_priv,
- struct ttm_object_file *tfile,
- uint32_t size,
- bool shareable,
- uint32_t *handle,
- struct vmw_buffer_object **p_vbo,
- struct ttm_base_object **p_base)
-{
- struct vmw_user_buffer_object *user_bo;
- struct ttm_buffer_object *tmp;
- int ret;
-
- user_bo = kzalloc(sizeof(*user_bo), GFP_KERNEL);
- if (unlikely(!user_bo)) {
- DRM_ERROR("Failed to allocate a buffer.\n");
- return -ENOMEM;
- }
-
- ret = vmw_bo_init(dev_priv, &user_bo->vbo, size,
- (dev_priv->has_mob) ?
- &vmw_sys_placement :
- &vmw_vram_sys_placement, true,
- &vmw_user_bo_destroy);
- if (unlikely(ret != 0))
- return ret;
-
- tmp = ttm_bo_reference(&user_bo->vbo.base);
- ret = ttm_prime_object_init(tfile,
- size,
- &user_bo->prime,
- shareable,
- ttm_buffer_type,
- &vmw_user_bo_release,
- &vmw_user_bo_ref_obj_release);
- if (unlikely(ret != 0)) {
- ttm_bo_unref(&tmp);
- goto out_no_base_object;
- }
-
- *p_vbo = &user_bo->vbo;
- if (p_base) {
- *p_base = &user_bo->prime.base;
- kref_get(&(*p_base)->refcount);
- }
- *handle = user_bo->prime.base.hash.key;
-
-out_no_base_object:
- return ret;
-}
-
-/**
- * vmw_user_bo_verify_access - verify access permissions on this
- * buffer object.
- *
- * @bo: Pointer to the buffer object being accessed
- * @tfile: Identifying the caller.
- */
-int vmw_user_bo_verify_access(struct ttm_buffer_object *bo,
- struct ttm_object_file *tfile)
-{
- struct vmw_user_buffer_object *vmw_user_bo;
-
- if (unlikely(bo->destroy != vmw_user_bo_destroy))
- return -EPERM;
-
- vmw_user_bo = vmw_user_buffer_object(bo);
-
- /* Check that the caller has opened the object. */
- if (likely(ttm_ref_object_exists(tfile, &vmw_user_bo->prime.base)))
- return 0;
-
- DRM_ERROR("Could not grant buffer access.\n");
- return -EPERM;
-}
-
-/**
- * vmw_user_bo_synccpu_grab - Grab a struct vmw_user_buffer_object for cpu
- * access, idling previous GPU operations on the buffer and optionally
- * blocking it for further command submissions.
- *
- * @user_bo: Pointer to the buffer object being grabbed for CPU access
- * @tfile: Identifying the caller.
- * @flags: Flags indicating how the grab should be performed.
- *
- * A blocking grab will be automatically released when @tfile is closed.
- */
-static int vmw_user_bo_synccpu_grab(struct vmw_user_buffer_object *user_bo,
- struct ttm_object_file *tfile,
- uint32_t flags)
-{
- struct ttm_buffer_object *bo = &user_bo->vbo.base;
- bool existed;
- int ret;
-
- if (flags & drm_vmw_synccpu_allow_cs) {
- bool nonblock = !!(flags & drm_vmw_synccpu_dontblock);
- long lret;
-
- lret = reservation_object_wait_timeout_rcu(bo->resv, true, true,
- nonblock ? 0 : MAX_SCHEDULE_TIMEOUT);
- if (!lret)
- return -EBUSY;
- else if (lret < 0)
- return lret;
- return 0;
- }
-
- ret = ttm_bo_synccpu_write_grab
- (bo, !!(flags & drm_vmw_synccpu_dontblock));
- if (unlikely(ret != 0))
- return ret;
-
- ret = ttm_ref_object_add(tfile, &user_bo->prime.base,
- TTM_REF_SYNCCPU_WRITE, &existed, false);
- if (ret != 0 || existed)
- ttm_bo_synccpu_write_release(&user_bo->vbo.base);
-
- return ret;
-}
-
-/**
- * vmw_user_bo_synccpu_release - Release a previous grab for CPU access,
- * and unblock command submission on the buffer if blocked.
- *
- * @handle: Handle identifying the buffer object.
- * @tfile: Identifying the caller.
- * @flags: Flags indicating the type of release.
- */
-static int vmw_user_bo_synccpu_release(uint32_t handle,
- struct ttm_object_file *tfile,
- uint32_t flags)
-{
- if (!(flags & drm_vmw_synccpu_allow_cs))
- return ttm_ref_object_base_unref(tfile, handle,
- TTM_REF_SYNCCPU_WRITE);
-
- return 0;
-}
-
-/**
- * vmw_user_bo_synccpu_release - ioctl function implementing the synccpu
- * functionality.
- *
- * @dev: Identifies the drm device.
- * @data: Pointer to the ioctl argument.
- * @file_priv: Identifies the caller.
- *
- * This function checks the ioctl arguments for validity and calls the
- * relevant synccpu functions.
- */
-int vmw_user_bo_synccpu_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct drm_vmw_synccpu_arg *arg =
- (struct drm_vmw_synccpu_arg *) data;
- struct vmw_buffer_object *vbo;
- struct vmw_user_buffer_object *user_bo;
- struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
- struct ttm_base_object *buffer_base;
- int ret;
-
- if ((arg->flags & (drm_vmw_synccpu_read | drm_vmw_synccpu_write)) == 0
- || (arg->flags & ~(drm_vmw_synccpu_read | drm_vmw_synccpu_write |
- drm_vmw_synccpu_dontblock |
- drm_vmw_synccpu_allow_cs)) != 0) {
- DRM_ERROR("Illegal synccpu flags.\n");
- return -EINVAL;
- }
-
- switch (arg->op) {
- case drm_vmw_synccpu_grab:
- ret = vmw_user_bo_lookup(tfile, arg->handle, &vbo,
- &buffer_base);
- if (unlikely(ret != 0))
- return ret;
-
- user_bo = container_of(vbo, struct vmw_user_buffer_object,
- vbo);
- ret = vmw_user_bo_synccpu_grab(user_bo, tfile, arg->flags);
- vmw_bo_unreference(&vbo);
- ttm_base_object_unref(&buffer_base);
- if (unlikely(ret != 0 && ret != -ERESTARTSYS &&
- ret != -EBUSY)) {
- DRM_ERROR("Failed synccpu grab on handle 0x%08x.\n",
- (unsigned int) arg->handle);
- return ret;
- }
- break;
- case drm_vmw_synccpu_release:
- ret = vmw_user_bo_synccpu_release(arg->handle, tfile,
- arg->flags);
- if (unlikely(ret != 0)) {
- DRM_ERROR("Failed synccpu release on handle 0x%08x.\n",
- (unsigned int) arg->handle);
- return ret;
- }
- break;
- default:
- DRM_ERROR("Invalid synccpu operation.\n");
- return -EINVAL;
- }
-
- return 0;
-}
-
-int vmw_bo_alloc_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct vmw_private *dev_priv = vmw_priv(dev);
- union drm_vmw_alloc_dmabuf_arg *arg =
- (union drm_vmw_alloc_dmabuf_arg *)data;
- struct drm_vmw_alloc_dmabuf_req *req = &arg->req;
- struct drm_vmw_dmabuf_rep *rep = &arg->rep;
- struct vmw_buffer_object *vbo;
- uint32_t handle;
- int ret;
-
- ret = ttm_read_lock(&dev_priv->reservation_sem, true);
- if (unlikely(ret != 0))
- return ret;
-
- ret = vmw_user_bo_alloc(dev_priv, vmw_fpriv(file_priv)->tfile,
- req->size, false, &handle, &vbo,
- NULL);
- if (unlikely(ret != 0))
- goto out_no_bo;
-
- rep->handle = handle;
- rep->map_handle = drm_vma_node_offset_addr(&vbo->base.vma_node);
- rep->cur_gmr_id = handle;
- rep->cur_gmr_offset = 0;
-
- vmw_bo_unreference(&vbo);
-
-out_no_bo:
- ttm_read_unlock(&dev_priv->reservation_sem);
-
- return ret;
-}
-
-int vmw_bo_unref_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct drm_vmw_unref_dmabuf_arg *arg =
- (struct drm_vmw_unref_dmabuf_arg *)data;
-
- return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile,
- arg->handle,
- TTM_REF_USAGE);
-}
-
-int vmw_user_bo_lookup(struct ttm_object_file *tfile,
- uint32_t handle, struct vmw_buffer_object **out,
- struct ttm_base_object **p_base)
-{
- struct vmw_user_buffer_object *vmw_user_bo;
- struct ttm_base_object *base;
-
- base = ttm_base_object_lookup(tfile, handle);
- if (unlikely(base == NULL)) {
- pr_err("Invalid buffer object handle 0x%08lx\n",
- (unsigned long)handle);
- return -ESRCH;
- }
-
- if (unlikely(ttm_base_object_type(base) != ttm_buffer_type)) {
- ttm_base_object_unref(&base);
- pr_err("Invalid buffer object handle 0x%08lx\n",
- (unsigned long)handle);
- return -EINVAL;
- }
-
- vmw_user_bo = container_of(base, struct vmw_user_buffer_object,
- prime.base);
- (void)ttm_bo_reference(&vmw_user_bo->vbo.base);
- if (p_base)
- *p_base = base;
- else
- ttm_base_object_unref(&base);
- *out = &vmw_user_bo->vbo;
-
- return 0;
-}
-
-int vmw_user_bo_reference(struct ttm_object_file *tfile,
- struct vmw_buffer_object *vbo,
- uint32_t *handle)
-{
- struct vmw_user_buffer_object *user_bo;
-
- if (vbo->base.destroy != vmw_user_bo_destroy)
- return -EINVAL;
-
- user_bo = container_of(vbo, struct vmw_user_buffer_object, vbo);
-
- *handle = user_bo->prime.base.hash.key;
- return ttm_ref_object_add(tfile, &user_bo->prime.base,
- TTM_REF_USAGE, NULL, false);
-}
-
-/**
- * vmw_dumb_create - Create a dumb kms buffer
- *
- * @file_priv: Pointer to a struct drm_file identifying the caller.
- * @dev: Pointer to the drm device.
- * @args: Pointer to a struct drm_mode_create_dumb structure
- *
- * This is a driver callback for the core drm create_dumb functionality.
- * Note that this is very similar to the vmw_bo_alloc ioctl, except
- * that the arguments have a different format.
- */
-int vmw_dumb_create(struct drm_file *file_priv,
- struct drm_device *dev,
- struct drm_mode_create_dumb *args)
-{
- struct vmw_private *dev_priv = vmw_priv(dev);
- struct vmw_buffer_object *vbo;
- int ret;
-
- args->pitch = args->width * ((args->bpp + 7) / 8);
- args->size = args->pitch * args->height;
-
- ret = ttm_read_lock(&dev_priv->reservation_sem, true);
- if (unlikely(ret != 0))
- return ret;
-
- ret = vmw_user_bo_alloc(dev_priv, vmw_fpriv(file_priv)->tfile,
- args->size, false, &args->handle,
- &vbo, NULL);
- if (unlikely(ret != 0))
- goto out_no_bo;
-
- vmw_bo_unreference(&vbo);
-out_no_bo:
- ttm_read_unlock(&dev_priv->reservation_sem);
- return ret;
-}
-
-/**
- * vmw_dumb_map_offset - Return the address space offset of a dumb buffer
- *
- * @file_priv: Pointer to a struct drm_file identifying the caller.
- * @dev: Pointer to the drm device.
- * @handle: Handle identifying the dumb buffer.
- * @offset: The address space offset returned.
- *
- * This is a driver callback for the core drm dumb_map_offset functionality.
- */
-int vmw_dumb_map_offset(struct drm_file *file_priv,
- struct drm_device *dev, uint32_t handle,
- uint64_t *offset)
-{
- struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
- struct vmw_buffer_object *out_buf;
- int ret;
-
- ret = vmw_user_bo_lookup(tfile, handle, &out_buf, NULL);
- if (ret != 0)
- return -EINVAL;
-
- *offset = drm_vma_node_offset_addr(&out_buf->base.vma_node);
- vmw_bo_unreference(&out_buf);
- return 0;
-}
-
-/**
- * vmw_dumb_destroy - Destroy a dumb boffer
- *
- * @file_priv: Pointer to a struct drm_file identifying the caller.
- * @dev: Pointer to the drm device.
- * @handle: Handle identifying the dumb buffer.
- *
- * This is a driver callback for the core drm dumb_destroy functionality.
- */
-int vmw_dumb_destroy(struct drm_file *file_priv,
- struct drm_device *dev,
- uint32_t handle)
-{
- return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile,
- handle, TTM_REF_USAGE);
-}
-
/**
* vmw_resource_buf_alloc - Allocate a backup buffer for a resource.
*
return ret;
}
-/**
- * vmw_fence_single_bo - Utility function to fence a single TTM buffer
- * object without unreserving it.
- *
- * @bo: Pointer to the struct ttm_buffer_object to fence.
- * @fence: Pointer to the fence. If NULL, this function will
- * insert a fence into the command stream..
- *
- * Contrary to the ttm_eu version of this function, it takes only
- * a single buffer object instead of a list, and it also doesn't
- * unreserve the buffer object, which needs to be done separately.
- */
-void vmw_fence_single_bo(struct ttm_buffer_object *bo,
- struct vmw_fence_obj *fence)
-{
- struct ttm_bo_device *bdev = bo->bdev;
-
- struct vmw_private *dev_priv =
- container_of(bdev, struct vmw_private, bdev);
-
- if (fence == NULL) {
- vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
- reservation_object_add_excl_fence(bo->resv, &fence->base);
- dma_fence_put(&fence->base);
- } else
- reservation_object_add_excl_fence(bo->resv, &fence->base);
-}
/**
- * vmw_resource_move_notify - TTM move_notify_callback
+ * vmw_resource_unbind_list
*
- * @bo: The TTM buffer object about to move.
- * @mem: The struct ttm_mem_reg indicating to what memory
- * region the move is taking place.
+ * @vbo: Pointer to the current backing MOB.
*
* Evicts the Guest Backed hardware resource if the backup
* buffer is being moved out of MOB memory.
- * Note that this function should not race with the resource
- * validation code as long as it accesses only members of struct
- * resource that remain static while bo::res is !NULL and
- * while we have @bo reserved. struct resource::backup is *not* a
- * static member. The resource validation code will take care
- * to set @bo::res to NULL, while having @bo reserved when the
- * buffer is no longer bound to the resource, so @bo:res can be
- * used to determine whether there is a need to unbind and whether
- * it is safe to unbind.
+ * Note that this function will not race with the resource
+ * validation code, since resource validation and eviction
+ * both require the backup buffer to be reserved.
*/
-void vmw_resource_move_notify(struct ttm_buffer_object *bo,
- struct ttm_mem_reg *mem)
+void vmw_resource_unbind_list(struct vmw_buffer_object *vbo)
{
- struct vmw_buffer_object *vbo;
-
- if (mem == NULL)
- return;
-
- if (bo->destroy != vmw_bo_bo_free &&
- bo->destroy != vmw_user_bo_destroy)
- return;
-
- vbo = container_of(bo, struct vmw_buffer_object, base);
-
- /*
- * Kill any cached kernel maps before move. An optimization could
- * be to do this iff source or destination memory type is VRAM.
- */
- vmw_buffer_object_unmap(vbo);
- if (mem->mem_type != VMW_PL_MOB) {
- struct vmw_resource *res, *n;
- struct ttm_validate_buffer val_buf;
+ struct vmw_resource *res, *next;
+ struct ttm_validate_buffer val_buf = {
+ .bo = &vbo->base,
+ .shared = false
+ };
- val_buf.bo = bo;
- val_buf.shared = false;
+ lockdep_assert_held(&vbo->base.resv->lock.base);
+ list_for_each_entry_safe(res, next, &vbo->res_list, mob_head) {
+ if (!res->func->unbind)
+ continue;
- list_for_each_entry_safe(res, n, &vbo->res_list, mob_head) {
-
- if (unlikely(res->func->unbind == NULL))
- continue;
-
- (void) res->func->unbind(res, true, &val_buf);
- res->backup_dirty = true;
- res->res_dirty = false;
- list_del_init(&res->mob_head);
- }
-
- (void) ttm_bo_wait(bo, false, false);
+ (void) res->func->unbind(res, true, &val_buf);
+ res->backup_dirty = true;
+ res->res_dirty = false;
+ list_del_init(&res->mob_head);
}
-}
-
-
-/**
- * vmw_resource_swap_notify - swapout notify callback.
- *
- * @bo: The buffer object to be swapped out.
- */
-void vmw_resource_swap_notify(struct ttm_buffer_object *bo)
-{
- if (bo->destroy != vmw_bo_bo_free &&
- bo->destroy != vmw_user_bo_destroy)
- return;
- /* Kill any cached kernel maps before swapout */
- vmw_buffer_object_unmap(vmw_buffer_object(bo));
+ (void) ttm_bo_wait(&vbo->base, false, false);
}
/* Create a fence and attach the BO to it */
(void) vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
- vmw_fence_single_bo(bo, fence);
+ vmw_bo_fence_single(bo, fence);
if (fence != NULL)
vmw_fence_obj_unreference(&fence);
(void) vmw_execbuf_fence_commands(NULL, dev_priv,
&fence, NULL);
- vmw_fence_single_bo(val_buf->bo, fence);
+ vmw_bo_fence_single(val_buf->bo, fence);
if (likely(fence != NULL))
vmw_fence_obj_unreference(&fence);
(void) vmw_execbuf_fence_commands(NULL, dev_priv,
&fence, NULL);
- vmw_fence_single_bo(val_buf->bo, fence);
+ vmw_bo_fence_single(val_buf->bo, fence);
if (likely(fence != NULL))
vmw_fence_obj_unreference(&fence);
(void) vmw_execbuf_fence_commands(NULL, dev_priv,
&fence, NULL);
- vmw_fence_single_bo(val_buf->bo, fence);
+ vmw_bo_fence_single(val_buf->bo, fence);
if (likely(fence != NULL))
vmw_fence_obj_unreference(&fence);
(void) vmw_execbuf_fence_commands(NULL, dev_priv,
&fence, NULL);
- vmw_fence_single_bo(val_buf->bo, fence);
+ vmw_bo_fence_single(val_buf->bo, fence);
if (likely(fence != NULL))
vmw_fence_obj_unreference(&fence);
bool evict,
struct ttm_mem_reg *mem)
{
- vmw_resource_move_notify(bo, mem);
+ vmw_bo_move_notify(bo, mem);
vmw_query_move_notify(bo, mem);
}
*/
static void vmw_swap_notify(struct ttm_buffer_object *bo)
{
- vmw_resource_swap_notify(bo);
+ vmw_bo_swap_notify(bo);
(void) ttm_bo_wait(bo, false, false);
}
projects / openwrt / staging / blogic.git / commitdiff