/**
* vmw_sou_crtc_mode_set_nofb - Create new screen
*
* @crtc: CRTC associated with the new screen
*
* This function creates/destroys a screen. This function cannot fail, so if
* somehow we run into a failure, just do the best we can to get out.
*/
static void vmw_sou_crtc_mode_set_nofb(struct drm_crtc *crtc)
{
struct vmw_private *dev_priv;
struct vmw_screen_object_unit *sou;
struct vmw_framebuffer *vfb;
struct drm_framebuffer *fb;
struct drm_plane_state *ps;
struct vmw_plane_state *vps;
int ret;
sou = vmw_crtc_to_sou(crtc);
dev_priv = vmw_priv(crtc->dev);
ps = crtc->primary->state;
fb = ps->fb;
vps = vmw_plane_state_to_vps(ps);
vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
if (sou->defined) {
ret = vmw_sou_fifo_destroy(dev_priv, sou);
if (ret) {
DRM_ERROR("Failed to destroy Screen Object\n");
return;
}
}
if (vfb) {
struct drm_connector_state *conn_state;
struct vmw_connector_state *vmw_conn_state;
int x, y;
sou->buffer = vps->bo;
sou->buffer_size = vps->bo_size;
if (sou->base.is_implicit) {
x = crtc->x;
y = crtc->y;
} else {
conn_state = sou->base.connector.state;
vmw_conn_state = vmw_connector_state_to_vcs(conn_state);
x = vmw_conn_state->gui_x;
y = vmw_conn_state->gui_y;
}
ret = vmw_sou_fifo_create(dev_priv, sou, x, y, &crtc->mode);
if (ret)
DRM_ERROR("Failed to define Screen Object %dx%d\n",
crtc->x, crtc->y);
vmw_kms_add_active(dev_priv, &sou->base, vfb);
} else {
sou->buffer = NULL;
sou->buffer_size = 0;
vmw_kms_del_active(dev_priv, &sou->base);
}
}
/**
* vmw_sou_primary_plane_cleanup_fb - Frees sou backing buffer
*
* @plane: display plane
* @old_state: Contains the FB to clean up
*
* Unpins the display surface
*
* Returns 0 on success
*/
static void
vmw_sou_primary_plane_cleanup_fb(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct vmw_plane_state *vps = vmw_plane_state_to_vps(old_state);
vmw_dmabuf_unreference(&vps->dmabuf);
vps->dmabuf_size = 0;
vmw_du_plane_cleanup_fb(plane, old_state);
}
/**
* vmw_sou_primary_plane_prepare_fb - allocate backing buffer
*
* @plane: display plane
* @new_state: info on the new plane state, including the FB
*
* The SOU backing buffer is our equivalent of the display plane.
*
* Returns 0 on success
*/
static int
vmw_sou_primary_plane_prepare_fb(struct drm_plane *plane,
struct drm_plane_state *new_state)
{
struct drm_framebuffer *new_fb = new_state->fb;
struct drm_crtc *crtc = plane->state->crtc ?: new_state->crtc;
struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
struct vmw_private *dev_priv;
size_t size;
int ret;
if (!new_fb) {
vmw_dmabuf_unreference(&vps->dmabuf);
vps->dmabuf_size = 0;
return 0;
}
size = new_state->crtc_w * new_state->crtc_h * 4;
if (vps->dmabuf) {
if (vps->dmabuf_size == size)
return 0;
vmw_dmabuf_unreference(&vps->dmabuf);
vps->dmabuf_size = 0;
}
vps->dmabuf = kzalloc(sizeof(*vps->dmabuf), GFP_KERNEL);
if (!vps->dmabuf)
return -ENOMEM;
dev_priv = vmw_priv(crtc->dev);
vmw_svga_enable(dev_priv);
/* After we have alloced the backing store might not be able to
* resume the overlays, this is preferred to failing to alloc.
*/
vmw_overlay_pause_all(dev_priv);
ret = vmw_dmabuf_init(dev_priv, vps->dmabuf, size,
&vmw_vram_ne_placement,
false, &vmw_dmabuf_bo_free);
vmw_overlay_resume_all(dev_priv);
if (ret != 0)
vps->dmabuf = NULL; /* vmw_dmabuf_init frees on error */
else
vps->dmabuf_size = size;
return ret;
}
/**
* vmw_sou_primary_plane_cleanup_fb - Frees sou backing buffer
*
* @plane: display plane
* @old_state: Contains the FB to clean up
*
* Unpins the display surface
*
* Returns 0 on success
*/
static void
vmw_sou_primary_plane_cleanup_fb(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct vmw_plane_state *vps = vmw_plane_state_to_vps(old_state);
struct drm_crtc *crtc = plane->state->crtc ?
plane->state->crtc : old_state->crtc;
if (vps->bo)
vmw_bo_unpin(vmw_priv(crtc->dev), vps->bo, false);
vmw_bo_unreference(&vps->bo);
vps->bo_size = 0;
vmw_du_plane_cleanup_fb(plane, old_state);
}
/**
* vmw_sou_primary_plane_prepare_fb - allocate backing buffer
*
* @plane: display plane
* @new_state: info on the new plane state, including the FB
*
* The SOU backing buffer is our equivalent of the display plane.
*
* Returns 0 on success
*/
static int
vmw_sou_primary_plane_prepare_fb(struct drm_plane *plane,
struct drm_plane_state *new_state)
{
struct drm_framebuffer *new_fb = new_state->fb;
struct drm_crtc *crtc = plane->state->crtc ?: new_state->crtc;
struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
struct vmw_private *dev_priv;
size_t size;
int ret;
if (!new_fb) {
vmw_bo_unreference(&vps->bo);
vps->bo_size = 0;
return 0;
}
size = new_state->crtc_w * new_state->crtc_h * 4;
dev_priv = vmw_priv(crtc->dev);
if (vps->bo) {
if (vps->bo_size == size) {
/*
* Note that this might temporarily up the pin-count
* to 2, until cleanup_fb() is called.
*/
return vmw_bo_pin_in_vram(dev_priv, vps->bo,
true);
}
vmw_bo_unreference(&vps->bo);
vps->bo_size = 0;
}
vps->bo = kzalloc(sizeof(*vps->bo), GFP_KERNEL);
if (!vps->bo)
return -ENOMEM;
vmw_svga_enable(dev_priv);
/* After we have alloced the backing store might not be able to
* resume the overlays, this is preferred to failing to alloc.
*/
vmw_overlay_pause_all(dev_priv);
ret = vmw_bo_init(dev_priv, vps->bo, size,
&vmw_vram_ne_placement,
false, &vmw_bo_bo_free);
vmw_overlay_resume_all(dev_priv);
if (ret) {
vps->bo = NULL; /* vmw_bo_init frees on error */
return ret;
}
vps->bo_size = size;
/*
* TTM already thinks the buffer is pinned, but make sure the
* pin_count is upped.
*/
return vmw_bo_pin_in_vram(dev_priv, vps->bo, true);
}
