vmwgfx: Break out execbuf command processing
This will make it easier to execute commands operating on user-space resources but generated by the kernel. JB: Added tracking if the sw_context was called from the kernel or userspace. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Jakob Bornecrantz <jakob@vmware.com> Reviewed-by: Jakob Bornecrantz <jakob@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Thomas Hellstrom
Dave Airlie
parent
6070e9fa6d
commit
922ade0d16
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@ -139,6 +139,7 @@ struct vmw_sw_context{
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struct ida bo_list;
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uint32_t last_cid;
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bool cid_valid;
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bool kernel; /**< is the called made from the kernel */
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uint32_t last_sid;
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uint32_t sid_translation;
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bool sid_valid;
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@ -449,6 +450,14 @@ extern int vmw_dma_quiescent(struct drm_device *dev);
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extern int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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extern int vmw_execbuf_process(struct drm_file *file_priv,
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struct vmw_private *dev_priv,
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void __user *user_commands,
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void *kernel_commands,
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uint32_t command_size,
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uint64_t throttle_us,
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struct drm_vmw_fence_rep __user
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*user_fence_rep);
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/**
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* IRQs and wating - vmwgfx_irq.c
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@ -531,9 +531,9 @@ out_err:
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static int vmw_cmd_check_all(struct vmw_private *dev_priv,
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struct vmw_sw_context *sw_context,
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void *buf,
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uint32_t size)
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{
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void *buf = sw_context->cmd_bounce;
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int32_t cur_size = size;
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int ret;
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@ -724,58 +724,44 @@ int vmw_execbuf_fence_commands(struct drm_file *file_priv,
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return 0;
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}
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int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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int vmw_execbuf_process(struct drm_file *file_priv,
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struct vmw_private *dev_priv,
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void __user *user_commands,
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void *kernel_commands,
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uint32_t command_size,
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uint64_t throttle_us,
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struct drm_vmw_fence_rep __user *user_fence_rep)
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{
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struct vmw_private *dev_priv = vmw_priv(dev);
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struct drm_vmw_execbuf_arg *arg = (struct drm_vmw_execbuf_arg *)data;
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struct drm_vmw_fence_rep fence_rep;
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struct drm_vmw_fence_rep __user *user_fence_rep;
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int ret;
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void *user_cmd;
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void *cmd;
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struct vmw_sw_context *sw_context = &dev_priv->ctx;
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struct vmw_master *vmaster = vmw_master(file_priv->master);
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struct drm_vmw_fence_rep fence_rep;
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struct vmw_fence_obj *fence;
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uint32_t handle;
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/*
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* This will allow us to extend the ioctl argument while
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* maintaining backwards compatibility:
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* We take different code paths depending on the value of
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* arg->version.
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*/
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if (unlikely(arg->version != DRM_VMW_EXECBUF_VERSION)) {
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DRM_ERROR("Incorrect execbuf version.\n");
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DRM_ERROR("You're running outdated experimental "
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"vmwgfx user-space drivers.");
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return -EINVAL;
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}
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ret = ttm_read_lock(&vmaster->lock, true);
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if (unlikely(ret != 0))
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return ret;
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void *cmd;
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int ret;
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ret = mutex_lock_interruptible(&dev_priv->cmdbuf_mutex);
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if (unlikely(ret != 0)) {
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ret = -ERESTARTSYS;
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goto out_no_cmd_mutex;
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}
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ret = vmw_resize_cmd_bounce(sw_context, arg->command_size);
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if (unlikely(ret != 0))
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goto out_unlock;
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return -ERESTARTSYS;
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user_cmd = (void __user *)(unsigned long)arg->commands;
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ret = copy_from_user(sw_context->cmd_bounce,
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user_cmd, arg->command_size);
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if (kernel_commands == NULL) {
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sw_context->kernel = false;
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if (unlikely(ret != 0)) {
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ret = -EFAULT;
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DRM_ERROR("Failed copying commands.\n");
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goto out_unlock;
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}
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ret = vmw_resize_cmd_bounce(sw_context, command_size);
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if (unlikely(ret != 0))
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goto out_unlock;
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ret = copy_from_user(sw_context->cmd_bounce,
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user_commands, command_size);
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if (unlikely(ret != 0)) {
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ret = -EFAULT;
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DRM_ERROR("Failed copying commands.\n");
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goto out_unlock;
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}
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kernel_commands = sw_context->cmd_bounce;
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} else
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sw_context->kernel = true;
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sw_context->tfile = vmw_fpriv(file_priv)->tfile;
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sw_context->cid_valid = false;
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@ -786,7 +772,8 @@ int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
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INIT_LIST_HEAD(&sw_context->validate_nodes);
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ret = vmw_cmd_check_all(dev_priv, sw_context, arg->command_size);
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ret = vmw_cmd_check_all(dev_priv, sw_context, kernel_commands,
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command_size);
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if (unlikely(ret != 0))
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goto out_err;
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@ -800,26 +787,24 @@ int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
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vmw_apply_relocations(sw_context);
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if (arg->throttle_us) {
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if (throttle_us) {
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ret = vmw_wait_lag(dev_priv, &dev_priv->fifo.marker_queue,
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arg->throttle_us);
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throttle_us);
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if (unlikely(ret != 0))
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goto out_throttle;
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}
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cmd = vmw_fifo_reserve(dev_priv, arg->command_size);
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cmd = vmw_fifo_reserve(dev_priv, command_size);
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if (unlikely(cmd == NULL)) {
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DRM_ERROR("Failed reserving fifo space for commands.\n");
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ret = -ENOMEM;
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goto out_err;
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goto out_throttle;
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}
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memcpy(cmd, sw_context->cmd_bounce, arg->command_size);
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vmw_fifo_commit(dev_priv, arg->command_size);
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memcpy(cmd, kernel_commands, command_size);
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vmw_fifo_commit(dev_priv, command_size);
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user_fence_rep = (struct drm_vmw_fence_rep __user *)
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(unsigned long)arg->fence_rep;
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ret = vmw_execbuf_fence_commands(file_priv, dev_priv,
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&fence,
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(user_fence_rep) ? &handle : NULL);
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@ -836,7 +821,6 @@ int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
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(void *) fence);
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vmw_clear_validations(sw_context);
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mutex_unlock(&dev_priv->cmdbuf_mutex);
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if (user_fence_rep) {
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fence_rep.error = ret;
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@ -873,9 +857,9 @@ int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
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if (likely(fence != NULL))
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vmw_fence_obj_unreference(&fence);
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vmw_kms_cursor_post_execbuf(dev_priv);
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ttm_read_unlock(&vmaster->lock);
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mutex_unlock(&dev_priv->cmdbuf_mutex);
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return 0;
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out_err:
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vmw_free_relocations(sw_context);
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out_throttle:
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@ -883,7 +867,47 @@ out_throttle:
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vmw_clear_validations(sw_context);
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out_unlock:
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mutex_unlock(&dev_priv->cmdbuf_mutex);
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out_no_cmd_mutex:
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return ret;
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}
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int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct vmw_private *dev_priv = vmw_priv(dev);
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struct drm_vmw_execbuf_arg *arg = (struct drm_vmw_execbuf_arg *)data;
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struct vmw_master *vmaster = vmw_master(file_priv->master);
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int ret;
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/*
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* This will allow us to extend the ioctl argument while
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* maintaining backwards compatibility:
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* We take different code paths depending on the value of
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* arg->version.
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*/
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if (unlikely(arg->version != DRM_VMW_EXECBUF_VERSION)) {
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DRM_ERROR("Incorrect execbuf version.\n");
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DRM_ERROR("You're running outdated experimental "
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"vmwgfx user-space drivers.");
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return -EINVAL;
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}
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ret = ttm_read_lock(&vmaster->lock, true);
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if (unlikely(ret != 0))
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return ret;
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ret = vmw_execbuf_process(file_priv, dev_priv,
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(void __user *)(unsigned long)arg->commands,
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NULL, arg->command_size, arg->throttle_us,
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(void __user *)(unsigned long)arg->fence_rep);
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if (unlikely(ret != 0))
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goto out_unlock;
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vmw_kms_cursor_post_execbuf(dev_priv);
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out_unlock:
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ttm_read_unlock(&vmaster->lock);
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return ret;
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}
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