2fd5eabab0
Afact vmwgfx already has all the right refcounting implemented on the backing storage, and we only need to ensure that the drm fb doesn't disappear untimely. So holding onto the fb reference from _lookup until vmw_kms_present has completed should be enough. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
327 lines
8.8 KiB
C
327 lines
8.8 KiB
C
/**************************************************************************
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*
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* Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#include "vmwgfx_drv.h"
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#include <drm/vmwgfx_drm.h>
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#include "vmwgfx_kms.h"
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int vmw_getparam_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_getparam_arg *param =
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(struct drm_vmw_getparam_arg *)data;
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switch (param->param) {
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case DRM_VMW_PARAM_NUM_STREAMS:
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param->value = vmw_overlay_num_overlays(dev_priv);
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break;
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case DRM_VMW_PARAM_NUM_FREE_STREAMS:
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param->value = vmw_overlay_num_free_overlays(dev_priv);
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break;
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case DRM_VMW_PARAM_3D:
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param->value = vmw_fifo_have_3d(dev_priv) ? 1 : 0;
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break;
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case DRM_VMW_PARAM_HW_CAPS:
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param->value = dev_priv->capabilities;
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break;
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case DRM_VMW_PARAM_FIFO_CAPS:
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param->value = dev_priv->fifo.capabilities;
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break;
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case DRM_VMW_PARAM_MAX_FB_SIZE:
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param->value = dev_priv->vram_size;
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break;
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case DRM_VMW_PARAM_FIFO_HW_VERSION:
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{
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__le32 __iomem *fifo_mem = dev_priv->mmio_virt;
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const struct vmw_fifo_state *fifo = &dev_priv->fifo;
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param->value =
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ioread32(fifo_mem +
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((fifo->capabilities &
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SVGA_FIFO_CAP_3D_HWVERSION_REVISED) ?
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SVGA_FIFO_3D_HWVERSION_REVISED :
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SVGA_FIFO_3D_HWVERSION));
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break;
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}
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default:
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DRM_ERROR("Illegal vmwgfx get param request: %d\n",
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param->param);
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return -EINVAL;
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}
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return 0;
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}
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int vmw_get_cap_3d_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 drm_vmw_get_3d_cap_arg *arg =
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(struct drm_vmw_get_3d_cap_arg *) data;
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struct vmw_private *dev_priv = vmw_priv(dev);
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uint32_t size;
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__le32 __iomem *fifo_mem;
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void __user *buffer = (void __user *)((unsigned long)(arg->buffer));
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void *bounce;
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int ret;
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if (unlikely(arg->pad64 != 0)) {
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DRM_ERROR("Illegal GET_3D_CAP argument.\n");
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return -EINVAL;
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}
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size = (SVGA_FIFO_3D_CAPS_LAST - SVGA_FIFO_3D_CAPS + 1) << 2;
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if (arg->max_size < size)
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size = arg->max_size;
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bounce = vmalloc(size);
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if (unlikely(bounce == NULL)) {
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DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n");
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return -ENOMEM;
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}
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fifo_mem = dev_priv->mmio_virt;
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memcpy_fromio(bounce, &fifo_mem[SVGA_FIFO_3D_CAPS], size);
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ret = copy_to_user(buffer, bounce, size);
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if (ret)
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ret = -EFAULT;
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vfree(bounce);
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if (unlikely(ret != 0))
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DRM_ERROR("Failed to report 3D caps info.\n");
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return ret;
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}
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int vmw_present_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 ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
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struct vmw_private *dev_priv = vmw_priv(dev);
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struct drm_vmw_present_arg *arg =
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(struct drm_vmw_present_arg *)data;
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struct vmw_surface *surface;
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struct vmw_master *vmaster = vmw_master(file_priv->master);
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struct drm_vmw_rect __user *clips_ptr;
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struct drm_vmw_rect *clips = NULL;
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struct drm_framebuffer *fb;
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struct vmw_framebuffer *vfb;
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struct vmw_resource *res;
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uint32_t num_clips;
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int ret;
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num_clips = arg->num_clips;
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clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr;
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if (unlikely(num_clips == 0))
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return 0;
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if (clips_ptr == NULL) {
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DRM_ERROR("Variable clips_ptr must be specified.\n");
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ret = -EINVAL;
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goto out_clips;
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}
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clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
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if (clips == NULL) {
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DRM_ERROR("Failed to allocate clip rect list.\n");
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ret = -ENOMEM;
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goto out_clips;
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}
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ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
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if (ret) {
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DRM_ERROR("Failed to copy clip rects from userspace.\n");
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ret = -EFAULT;
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goto out_no_copy;
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}
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drm_modeset_lock_all(dev);
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fb = drm_framebuffer_lookup(dev, arg->fb_id);
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if (!fb) {
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DRM_ERROR("Invalid framebuffer id.\n");
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ret = -EINVAL;
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goto out_no_fb;
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}
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vfb = vmw_framebuffer_to_vfb(fb);
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ret = ttm_read_lock(&vmaster->lock, true);
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if (unlikely(ret != 0))
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goto out_no_ttm_lock;
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ret = vmw_user_resource_lookup_handle(dev_priv, tfile, arg->sid,
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user_surface_converter,
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&res);
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if (ret)
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goto out_no_surface;
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surface = vmw_res_to_srf(res);
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ret = vmw_kms_present(dev_priv, file_priv,
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vfb, surface, arg->sid,
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arg->dest_x, arg->dest_y,
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clips, num_clips);
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/* vmw_user_surface_lookup takes one ref so does new_fb */
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vmw_surface_unreference(&surface);
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out_no_surface:
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ttm_read_unlock(&vmaster->lock);
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out_no_ttm_lock:
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drm_framebuffer_unreference(fb);
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out_no_fb:
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drm_modeset_unlock_all(dev);
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out_no_copy:
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kfree(clips);
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out_clips:
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return ret;
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}
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int vmw_present_readback_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_present_readback_arg *arg =
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(struct drm_vmw_present_readback_arg *)data;
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struct drm_vmw_fence_rep __user *user_fence_rep =
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(struct drm_vmw_fence_rep __user *)
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(unsigned long)arg->fence_rep;
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struct vmw_master *vmaster = vmw_master(file_priv->master);
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struct drm_vmw_rect __user *clips_ptr;
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struct drm_vmw_rect *clips = NULL;
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struct drm_framebuffer *fb;
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struct vmw_framebuffer *vfb;
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uint32_t num_clips;
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int ret;
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num_clips = arg->num_clips;
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clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr;
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if (unlikely(num_clips == 0))
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return 0;
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if (clips_ptr == NULL) {
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DRM_ERROR("Argument clips_ptr must be specified.\n");
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ret = -EINVAL;
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goto out_clips;
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}
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clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
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if (clips == NULL) {
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DRM_ERROR("Failed to allocate clip rect list.\n");
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ret = -ENOMEM;
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goto out_clips;
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}
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ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
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if (ret) {
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DRM_ERROR("Failed to copy clip rects from userspace.\n");
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ret = -EFAULT;
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goto out_no_copy;
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}
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drm_modeset_lock_all(dev);
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fb = drm_framebuffer_lookup(dev, arg->fb_id);
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if (!fb) {
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DRM_ERROR("Invalid framebuffer id.\n");
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ret = -EINVAL;
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goto out_no_fb;
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}
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vfb = vmw_framebuffer_to_vfb(fb);
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if (!vfb->dmabuf) {
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DRM_ERROR("Framebuffer not dmabuf backed.\n");
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ret = -EINVAL;
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goto out_no_ttm_lock;
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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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goto out_no_ttm_lock;
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ret = vmw_kms_readback(dev_priv, file_priv,
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vfb, user_fence_rep,
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clips, num_clips);
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ttm_read_unlock(&vmaster->lock);
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out_no_ttm_lock:
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drm_framebuffer_unreference(fb);
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out_no_fb:
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drm_modeset_unlock_all(dev);
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out_no_copy:
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kfree(clips);
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out_clips:
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return ret;
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}
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/**
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* vmw_fops_poll - wrapper around the drm_poll function
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*
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* @filp: See the linux fops poll documentation.
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* @wait: See the linux fops poll documentation.
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*
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* Wrapper around the drm_poll function that makes sure the device is
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* processing the fifo if drm_poll decides to wait.
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*/
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unsigned int vmw_fops_poll(struct file *filp, struct poll_table_struct *wait)
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{
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struct drm_file *file_priv = filp->private_data;
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struct vmw_private *dev_priv =
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vmw_priv(file_priv->minor->dev);
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vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC);
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return drm_poll(filp, wait);
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}
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/**
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* vmw_fops_read - wrapper around the drm_read function
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*
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* @filp: See the linux fops read documentation.
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* @buffer: See the linux fops read documentation.
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* @count: See the linux fops read documentation.
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* offset: See the linux fops read documentation.
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*
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* Wrapper around the drm_read function that makes sure the device is
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* processing the fifo if drm_read decides to wait.
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*/
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ssize_t vmw_fops_read(struct file *filp, char __user *buffer,
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size_t count, loff_t *offset)
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{
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struct drm_file *file_priv = filp->private_data;
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struct vmw_private *dev_priv =
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vmw_priv(file_priv->minor->dev);
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vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC);
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return drm_read(filp, buffer, count, offset);
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}
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