// SPDX-License-Identifier: GPL-2.0 OR MIT /************************************************************************** * * Copyright (c) 2009-2025 Broadcom. All Rights Reserved. The term * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
**************************************************************************/
/* Planes are static in our case so we don't free it */
}
/** * vmw_du_plane_unpin_surf - unpins resource associated with a framebuffer surface * * @vps: plane state associated with the display surface
*/ void vmw_du_plane_unpin_surf(struct vmw_plane_state *vps)
{ struct vmw_surface *surf = vmw_user_object_surface(&vps->uo);
if (surf) { if (vps->pinned) {
vmw_resource_unpin(&surf->res);
vps->pinned--;
}
}
}
/** * vmw_du_plane_cleanup_fb - Unpins the plane surface * * @plane: display plane * @old_state: Contains the FB to clean up * * Unpins the framebuffer surface * * Returns 0 on success
*/ void
vmw_du_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_du_plane_unpin_surf(vps);
}
/** * vmw_du_primary_plane_atomic_check - check if the new state is okay * * @plane: display plane * @state: info on the new plane state, including the FB * * Check if the new state is settable given the current state. Other * than what the atomic helper checks, we care about crtc fitting * the FB and maintaining one active framebuffer. * * Returns 0 on success
*/ int vmw_du_primary_plane_atomic_check(struct drm_plane *plane, struct drm_atomic_state *state)
{ struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
plane); struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
plane); struct drm_crtc_state *crtc_state = NULL; struct drm_framebuffer *new_fb = new_state->fb; struct drm_framebuffer *old_fb = old_state->fb; int ret;
/* * Ignore damage clips if the framebuffer attached to the plane's state * has changed since the last plane update (page-flip). In this case, a * full plane update should happen because uploads are done per-buffer.
*/ if (old_fb != new_fb)
new_state->ignore_damage_clips = true;
if (new_state->crtc)
crtc_state = drm_atomic_get_new_crtc_state(state,
new_state->crtc);
/* * This is fine in general, but broken userspace might expect * some actual rendering so give a clue as why it's blank.
*/ if (new_state->enable && !has_primary)
drm_dbg_driver(&vmw->drm, "CRTC without a primary plane will be blank.\n");
/* * Our virtual device does not have a dot clock, so use the logical * clock value as the dot clock.
*/ if (new_state->mode.crtc_clock == 0)
new_state->adjusted_mode.crtc_clock = new_state->mode.clock;
/** * vmw_du_crtc_duplicate_state - duplicate crtc state * @crtc: DRM crtc * * Allocates and returns a copy of the crtc state (both common and * vmw-specific) for the specified crtc. * * Returns: The newly allocated crtc state, or NULL on failure.
*/ struct drm_crtc_state *
vmw_du_crtc_duplicate_state(struct drm_crtc *crtc)
{ struct drm_crtc_state *state; struct vmw_crtc_state *vcs;
/** * vmw_du_crtc_reset - creates a blank vmw crtc state * @crtc: DRM crtc * * Resets the atomic state for @crtc by freeing the state pointer (which * might be NULL, e.g. at driver load time) and allocating a new empty state * object.
*/ void vmw_du_crtc_reset(struct drm_crtc *crtc)
{ struct vmw_crtc_state *vcs;
if (crtc->state) {
__drm_atomic_helper_crtc_destroy_state(crtc->state);
kfree(vmw_crtc_state_to_vcs(crtc->state));
}
vcs = kzalloc(sizeof(*vcs), GFP_KERNEL);
if (!vcs) {
DRM_ERROR("Cannot allocate vmw_crtc_state\n"); return;
}
/** * vmw_du_crtc_destroy_state - destroy crtc state * @crtc: DRM crtc * @state: state object to destroy * * Destroys the crtc state (both common and vmw-specific) for the * specified plane.
*/ void
vmw_du_crtc_destroy_state(struct drm_crtc *crtc, struct drm_crtc_state *state)
{
drm_atomic_helper_crtc_destroy_state(crtc, state);
}
/** * vmw_du_plane_duplicate_state - duplicate plane state * @plane: drm plane * * Allocates and returns a copy of the plane state (both common and * vmw-specific) for the specified plane. * * Returns: The newly allocated plane state, or NULL on failure.
*/ struct drm_plane_state *
vmw_du_plane_duplicate_state(struct drm_plane *plane)
{ struct drm_plane_state *state; struct vmw_plane_state *vps;
/** * vmw_du_plane_reset - creates a blank vmw plane state * @plane: drm plane * * Resets the atomic state for @plane by freeing the state pointer (which might * be NULL, e.g. at driver load time) and allocating a new empty state object.
*/ void vmw_du_plane_reset(struct drm_plane *plane)
{ struct vmw_plane_state *vps;
if (plane->state)
vmw_du_plane_destroy_state(plane, plane->state);
vps = kzalloc(sizeof(*vps), GFP_KERNEL);
if (!vps) {
DRM_ERROR("Cannot allocate vmw_plane_state\n"); return;
}
/** * vmw_du_connector_duplicate_state - duplicate connector state * @connector: DRM connector * * Allocates and returns a copy of the connector state (both common and * vmw-specific) for the specified connector. * * Returns: The newly allocated connector state, or NULL on failure.
*/ struct drm_connector_state *
vmw_du_connector_duplicate_state(struct drm_connector *connector)
{ struct drm_connector_state *state; struct vmw_connector_state *vcs;
/** * vmw_du_connector_reset - creates a blank vmw connector state * @connector: DRM connector * * Resets the atomic state for @connector by freeing the state pointer (which * might be NULL, e.g. at driver load time) and allocating a new empty state * object.
*/ void vmw_du_connector_reset(struct drm_connector *connector)
{ struct vmw_connector_state *vcs;
if (connector->state) {
__drm_atomic_helper_connector_destroy_state(connector->state);
if (bo) {
vmw_bo_dirty_release(bo); /* * bo->dirty is reference counted so it being NULL * means that the surface wasn't coherent to begin * with and so we have to free the dirty tracker * in the vmw_resource
*/ if (!bo->dirty && surf && surf->res.dirty)
surf->res.func->dirty_free(&surf->res);
}
drm_framebuffer_cleanup(framebuffer);
vmw_user_object_unref(&vfbs->uo);
kfree(vfbs);
}
/** * vmw_kms_readback - Perform a readback from the screen system to * a buffer-object backed framebuffer. * * @dev_priv: Pointer to the device private structure. * @file_priv: Pointer to a struct drm_file identifying the caller. * Must be set to NULL if @user_fence_rep is NULL. * @vfb: Pointer to the buffer-object backed framebuffer. * @user_fence_rep: User-space provided structure for fence information. * Must be set to non-NULL if @file_priv is non-NULL. * @vclips: Array of clip rects. * @num_clips: Number of clip rects in @vclips. * * Returns 0 on success, negative error code on failure. -ERESTARTSYS if * interrupted.
*/ int vmw_kms_readback(struct vmw_private *dev_priv, struct drm_file *file_priv, struct vmw_framebuffer *vfb, struct drm_vmw_fence_rep __user *user_fence_rep, struct drm_vmw_rect *vclips,
uint32_t num_clips)
{ switch (dev_priv->active_display_unit) { case vmw_du_screen_object: return vmw_kms_sou_readback(dev_priv, file_priv, vfb,
user_fence_rep, vclips, num_clips,
NULL); case vmw_du_screen_target: return vmw_kms_stdu_readback(dev_priv, file_priv, vfb,
user_fence_rep, NULL, vclips, num_clips,
1, NULL); default:
WARN_ONCE(true, "Readback called with invalid display system.\n");
}
/** * vmw_kms_srf_ok - check if a surface can be created * * @dev_priv: Pointer to device private struct. * @width: requested width * @height: requested height * * Surfaces need to be less than texture size
*/ staticbool
vmw_kms_srf_ok(struct vmw_private *dev_priv, uint32_t width, uint32_t height)
{ if (width > dev_priv->texture_max_width ||
height > dev_priv->texture_max_height) returnfalse;
returntrue;
}
/** * vmw_kms_new_framebuffer - Create a new framebuffer. * * @dev_priv: Pointer to device private struct. * @uo: Pointer to user object to wrap the kms framebuffer around. * Either the buffer or surface inside the user object must be NULL. * @info: pixel format information. * @mode_cmd: Frame-buffer metadata.
*/ struct vmw_framebuffer *
vmw_kms_new_framebuffer(struct vmw_private *dev_priv, struct vmw_user_object *uo, conststruct drm_format_info *info, conststruct drm_mode_fb_cmd2 *mode_cmd)
{ struct vmw_framebuffer *vfb = NULL; int ret;
/* Create the new framebuffer depending one what we have */ if (vmw_user_object_surface(uo)) {
ret = vmw_kms_new_framebuffer_surface(dev_priv, uo, &vfb,
info, mode_cmd);
} elseif (uo->buffer) {
ret = vmw_kms_new_framebuffer_bo(dev_priv, uo->buffer, &vfb,
info, mode_cmd);
} else {
BUG();
}
/* returns either a bo or surface */
ret = vmw_user_object_lookup(dev_priv, file_priv, mode_cmd->handles[0],
&uo); if (ret) {
DRM_ERROR("Invalid buffer object handle %u (0x%x).\n",
mode_cmd->handles[0], mode_cmd->handles[0]); goto err_out;
}
if (vmw_user_object_surface(&uo) &&
!vmw_kms_srf_ok(dev_priv, mode_cmd->width, mode_cmd->height)) {
DRM_ERROR("Surface size cannot exceed %dx%d\n",
dev_priv->texture_max_width,
dev_priv->texture_max_height);
ret = -EINVAL; goto err_out;
}
vfb = vmw_kms_new_framebuffer(dev_priv, &uo, info, mode_cmd); if (IS_ERR(vfb)) {
ret = PTR_ERR(vfb); goto err_out;
}
err_out:
bo = vmw_user_object_buffer(&uo);
surface = vmw_user_object_surface(&uo); /* vmw_user_object_lookup takes one ref so does new_fb */
vmw_user_object_unref(&uo);
if (ret) {
DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret); return ERR_PTR(ret);
}
ttm_bo_reserve(&bo->tbo, false, false, NULL);
ret = vmw_bo_dirty_add(bo); if (!ret && surface && surface->res.func->dirty_alloc) {
surface->res.coherent = true;
ret = surface->res.func->dirty_alloc(&surface->res);
}
ttm_bo_unreserve(&bo->tbo);
return &vfb->base;
}
/** * vmw_kms_check_display_memory - Validates display memory required for a * topology * @dev: DRM device * @num_rects: number of drm_rect in rects * @rects: array of drm_rect representing the topology to validate indexed by * crtc index. * * Returns: * 0 on success otherwise negative error code
*/ staticint vmw_kms_check_display_memory(struct drm_device *dev,
uint32_t num_rects, struct drm_rect *rects)
{ struct vmw_private *dev_priv = vmw_priv(dev); struct drm_rect bounding_box = {0};
u64 total_pixels = 0, pixel_mem, bb_mem; int i;
for (i = 0; i < num_rects; i++) { /* * For STDU only individual screen (screen target) is limited by * SCREENTARGET_MAX_WIDTH/HEIGHT registers.
*/ if (dev_priv->active_display_unit == vmw_du_screen_target &&
(drm_rect_width(&rects[i]) > dev_priv->stdu_max_width ||
drm_rect_height(&rects[i]) > dev_priv->stdu_max_height)) {
VMW_DEBUG_KMS("Screen size not supported.\n"); return -EINVAL;
}
/* Bounding box upper left is at (0,0). */ if (rects[i].x2 > bounding_box.x2)
bounding_box.x2 = rects[i].x2;
if (rects[i].y2 > bounding_box.y2)
bounding_box.y2 = rects[i].y2;
/* Virtual svga device primary limits are always in 32-bpp. */
pixel_mem = total_pixels * 4;
/* * For HV10 and below prim_bb_mem is vram size. When * SVGA_REG_MAX_PRIMARY_BOUNDING_BOX_MEM is not present vram size is * limit on primary bounding box
*/ if (pixel_mem > dev_priv->max_primary_mem) {
VMW_DEBUG_KMS("Combined output size too large.\n"); return -EINVAL;
}
/* SVGA_CAP_NO_BB_RESTRICTION is available for STDU only. */ if (dev_priv->active_display_unit != vmw_du_screen_target ||
!(dev_priv->capabilities & SVGA_CAP_NO_BB_RESTRICTION)) {
bb_mem = (u64) bounding_box.x2 * bounding_box.y2 * 4;
if (bb_mem > dev_priv->max_primary_mem) {
VMW_DEBUG_KMS("Topology is beyond supported limits.\n"); return -EINVAL;
}
}
return 0;
}
/** * vmw_crtc_state_and_lock - Return new or current crtc state with locked * crtc mutex * @state: The atomic state pointer containing the new atomic state * @crtc: The crtc * * This function returns the new crtc state if it's part of the state update. * Otherwise returns the current crtc state. It also makes sure that the * crtc mutex is locked. * * Returns: A valid crtc state pointer or NULL. It may also return a * pointer error, in particular -EDEADLK if locking needs to be rerun.
*/ staticstruct drm_crtc_state *
vmw_crtc_state_and_lock(struct drm_atomic_state *state, struct drm_crtc *crtc)
{ struct drm_crtc_state *crtc_state;
crtc_state = drm_atomic_get_new_crtc_state(state, crtc); if (crtc_state) {
lockdep_assert_held(&crtc->mutex.mutex.base);
} else { int ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx);
if (ret != 0 && ret != -EALREADY) return ERR_PTR(ret);
crtc_state = crtc->state;
}
return crtc_state;
}
/** * vmw_kms_check_implicit - Verify that all implicit display units scan out * from the same fb after the new state is committed. * @dev: The drm_device. * @state: The new state to be checked. * * Returns: * Zero on success, * -EINVAL on invalid state, * -EDEADLK if modeset locking needs to be rerun.
*/ staticint vmw_kms_check_implicit(struct drm_device *dev, struct drm_atomic_state *state)
{ struct drm_framebuffer *implicit_fb = NULL; struct drm_crtc *crtc; struct drm_crtc_state *crtc_state; struct drm_plane_state *plane_state;
crtc_state = vmw_crtc_state_and_lock(state, crtc); if (IS_ERR(crtc_state)) return PTR_ERR(crtc_state);
if (!crtc_state || !crtc_state->enable) continue;
/* * Can't move primary planes across crtcs, so this is OK. * It also means we don't need to take the plane mutex.
*/
plane_state = du->primary.state; if (plane_state->crtc != crtc) continue;
/* Determine change to topology due to new atomic state */
for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state,
new_crtc_state, i) { struct vmw_display_unit *du = vmw_crtc_to_du(crtc); struct drm_connector *connector; struct drm_connector_state *conn_state; struct vmw_connector_state *vmw_conn_state;
if (!du->pref_active && new_crtc_state->enable) {
VMW_DEBUG_KMS("Enabling a disabled display unit\n");
ret = -EINVAL; goto clean;
}
/* * For vmwgfx each crtc has only one connector attached and it * is not changed so don't really need to check the * crtc->connector_mask and iterate over it.
*/
connector = &du->connector;
conn_state = drm_atomic_get_connector_state(state, connector); if (IS_ERR(conn_state)) {
ret = PTR_ERR(conn_state); goto clean;
}
ret = vmw_kms_check_display_memory(dev, dev->mode_config.num_crtc,
rects);
clean:
kfree(rects); return ret;
}
/** * vmw_kms_atomic_check_modeset- validate state object for modeset changes * * @dev: DRM device * @state: the driver state object * * This is a simple wrapper around drm_atomic_helper_check_modeset() for * us to assign a value to mode->crtc_clock so that * drm_calc_timestamping_constants() won't throw an error message * * Returns: * Zero for success or -errno
*/ staticint
vmw_kms_atomic_check_modeset(struct drm_device *dev, struct drm_atomic_state *state)
{ struct drm_crtc *crtc; struct drm_crtc_state *crtc_state; bool need_modeset = false; int i, ret;
ret = drm_atomic_helper_check(dev, state); if (ret) return ret;
ret = vmw_kms_check_implicit(dev, state); if (ret) {
VMW_DEBUG_KMS("Invalid implicit state\n"); return ret;
}
ret = vmw_kms_stdu_init_display(dev_priv); if (ret) {
ret = vmw_kms_sou_init_display(dev_priv); if (ret) /* Fallback */
ret = vmw_kms_ldu_init_display(dev_priv);
}
BUILD_BUG_ON(ARRAY_SIZE(display_unit_names) != (vmw_du_max + 1));
drm_info(&dev_priv->drm, "%s display unit initialized\n",
display_unit_names[dev_priv->active_display_unit]);
return ret;
}
int vmw_kms_close(struct vmw_private *dev_priv)
{ int ret = 0;
/* * Docs says we should take the lock before calling this function * but since it destroys encoders and our destructor calls * drm_encoder_cleanup which takes the lock we deadlock.
*/
drm_mode_config_cleanup(&dev_priv->drm); if (dev_priv->active_display_unit == vmw_du_legacy)
ret = vmw_kms_ldu_close_display(dev_priv);
/** * vmw_kms_update_layout_ioctl - Handler for DRM_VMW_UPDATE_LAYOUT ioctl * @dev: drm device for the ioctl * @data: data pointer for the ioctl * @file_priv: drm file for the ioctl call * * Update preferred topology of display unit as per ioctl request. The topology * is expressed as array of drm_vmw_rect. * e.g. * [0 0 640 480] [640 0 800 600] [0 480 640 480] * * NOTE: * The x and y offset (upper left) in drm_vmw_rect cannot be less than 0. Beside * device limit on topology, x + w and y + h (lower right) cannot be greater * than INT_MAX. So topology beyond these limits will return with error. * * Returns: * Zero on success, negative errno on failure.
*/ int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv)
{ struct vmw_private *dev_priv = vmw_priv(dev); struct drm_mode_config *mode_config = &dev->mode_config; struct drm_vmw_update_layout_arg *arg =
(struct drm_vmw_update_layout_arg *)data; constvoid __user *user_rects; struct drm_vmw_rect *rects; struct drm_rect *drm_rects; unsigned rects_size; int ret, i;
user_rects = (void __user *)(unsignedlong)arg->rects;
ret = copy_from_user(rects, user_rects, rects_size); if (unlikely(ret != 0)) {
DRM_ERROR("Failed to get rects.\n");
ret = -EFAULT; goto out_free;
}
drm_rects = (struct drm_rect *)rects;
VMW_DEBUG_KMS("Layout count = %u\n", arg->num_outputs); for (i = 0; i < arg->num_outputs; i++) { struct drm_vmw_rect curr_rect;
/* Verify user-space for overflow as kernel use drm_rect */ if ((rects[i].x + rects[i].w > INT_MAX) ||
(rects[i].y + rects[i].h > INT_MAX)) {
ret = -ERANGE; goto out_free;
}
/* * Currently this check is limiting the topology within * mode_config->max (which actually is max texture size * supported by virtual device). This limit is here to address * window managers that create a big framebuffer for whole * topology.
*/ if (drm_rects[i].x1 < 0 || drm_rects[i].y1 < 0 ||
drm_rects[i].x2 > mode_config->max_width ||
drm_rects[i].y2 > mode_config->max_height) {
VMW_DEBUG_KMS("Invalid layout %d %d %d %d\n",
drm_rects[i].x1, drm_rects[i].y1,
drm_rects[i].x2, drm_rects[i].y2);
ret = -EINVAL; goto out_free;
}
}
ret = vmw_kms_check_display_memory(dev, arg->num_outputs, drm_rects);
if (ret == 0)
vmw_du_update_layout(dev_priv, arg->num_outputs, drm_rects);
out_free:
kfree(rects); return ret;
}
/** * vmw_kms_helper_dirty - Helper to build commands and perform actions based * on a set of cliprects and a set of display units. * * @dev_priv: Pointer to a device private structure. * @framebuffer: Pointer to the framebuffer on which to perform the actions. * @clips: A set of struct drm_clip_rect. Either this os @vclips must be NULL. * Cliprects are given in framebuffer coordinates. * @vclips: A set of struct drm_vmw_rect cliprects. Either this or @clips must * be NULL. Cliprects are given in source coordinates. * @dest_x: X coordinate offset for the crtc / destination clip rects. * @dest_y: Y coordinate offset for the crtc / destination clip rects. * @num_clips: Number of cliprects in the @clips or @vclips array. * @increment: Integer with which to increment the clip counter when looping. * Used to skip a predetermined number of clip rects. * @dirty: Closure structure. See the description of struct vmw_kms_dirty.
*/ int vmw_kms_helper_dirty(struct vmw_private *dev_priv, struct vmw_framebuffer *framebuffer, conststruct drm_clip_rect *clips, conststruct drm_vmw_rect *vclips,
s32 dest_x, s32 dest_y, int num_clips, int increment, struct vmw_kms_dirty *dirty)
{ struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS]; struct drm_crtc *crtc;
u32 num_units = 0;
u32 i, k;
dirty->dev_priv = dev_priv;
/* If crtc is passed, no need to iterate over other display units */ if (dirty->crtc) {
units[num_units++] = vmw_crtc_to_du(dirty->crtc);
} else {
list_for_each_entry(crtc, &dev_priv->drm.mode_config.crtc_list,
head) { struct drm_plane *plane = crtc->primary;
if (plane->state->fb == &framebuffer->base)
units[num_units++] = vmw_crtc_to_du(crtc);
}
}
/* Skip this clip if it's outside the crtc region */ if (dirty->unit_x1 >= crtc_width ||
dirty->unit_y1 >= crtc_height ||
dirty->unit_x2 <= 0 || dirty->unit_y2 <= 0) continue;
/* Clip right and bottom to crtc limits */
dirty->unit_x2 = min_t(s32, dirty->unit_x2,
crtc_width);
dirty->unit_y2 = min_t(s32, dirty->unit_y2,
crtc_height);
/* Clip left and top to crtc limits */
clip_left = min_t(s32, dirty->unit_x1, 0);
clip_top = min_t(s32, dirty->unit_y1, 0);
dirty->unit_x1 -= clip_left;
dirty->unit_y1 -= clip_top;
dirty->fb_x -= clip_left;
dirty->fb_y -= clip_top;
dirty->clip(dirty);
}
dirty->fifo_commit(dirty);
}
return 0;
}
/** * vmw_kms_helper_validation_finish - Helper for post KMS command submission * cleanup and fencing * @dev_priv: Pointer to the device-private struct * @file_priv: Pointer identifying the client when user-space fencing is used * @ctx: Pointer to the validation context * @out_fence: If non-NULL, returned refcounted fence-pointer * @user_fence_rep: If non-NULL, pointer to user-space address area * in which to copy user-space fence info
*/ void vmw_kms_helper_validation_finish(struct vmw_private *dev_priv, struct drm_file *file_priv, struct vmw_validation_context *ctx, struct vmw_fence_obj **out_fence, struct drm_vmw_fence_rep __user *
user_fence_rep)
{ struct vmw_fence_obj *fence = NULL;
uint32_t handle = 0; int ret = 0;
if (file_priv || user_fence_rep || vmw_validation_has_bos(ctx) ||
out_fence)
ret = vmw_execbuf_fence_commands(file_priv, dev_priv, &fence,
file_priv ? &handle : NULL);
vmw_validation_done(ctx, fence); if (file_priv)
vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv),
ret, user_fence_rep, fence,
handle, -1); if (out_fence)
*out_fence = fence; else
vmw_fence_obj_unreference(&fence);
}
/** * vmw_kms_create_implicit_placement_property - Set up the implicit placement * property. * * @dev_priv: Pointer to a device private struct. * * Sets up the implicit placement property unless it's already set up.
*/ void
vmw_kms_create_implicit_placement_property(struct vmw_private *dev_priv)
{ if (dev_priv->implicit_placement_property) return;
/** * vmw_kms_suspend - Save modesetting state and turn modesetting off. * * @dev: Pointer to the drm device * Return: 0 on success. Negative error code on failure.
*/ int vmw_kms_suspend(struct drm_device *dev)
{ struct vmw_private *dev_priv = vmw_priv(dev);
dev_priv->suspend_state = drm_atomic_helper_suspend(dev); if (IS_ERR(dev_priv->suspend_state)) { int ret = PTR_ERR(dev_priv->suspend_state);
/** * vmw_kms_resume - Re-enable modesetting and restore state * * @dev: Pointer to the drm device * Return: 0 on success. Negative error code on failure. * * State is resumed from a previous vmw_kms_suspend(). It's illegal * to call this function without a previous vmw_kms_suspend().
*/ int vmw_kms_resume(struct drm_device *dev)
{ struct vmw_private *dev_priv = vmw_priv(dev); int ret;
if (WARN_ON(!dev_priv->suspend_state)) return 0;
ret = drm_atomic_helper_resume(dev, dev_priv->suspend_state);
dev_priv->suspend_state = NULL;
return ret;
}
/** * vmw_kms_lost_device - Notify kms that modesetting capabilities will be lost * * @dev: Pointer to the drm device
*/ void vmw_kms_lost_device(struct drm_device *dev)
{
drm_atomic_helper_shutdown(dev);
}
/** * vmw_du_helper_plane_update - Helper to do plane update on a display unit. * @update: The closure structure. * * Call this helper after setting callbacks in &vmw_du_update_plane to do plane * update on display unit. * * Return: 0 on success or a negative error code on failure.
*/ int vmw_du_helper_plane_update(struct vmw_du_update_plane *update)
{ struct drm_plane_state *state = update->plane->state; struct drm_plane_state *old_state = update->old_state; struct drm_atomic_helper_damage_iter iter; struct drm_rect clip; struct drm_rect bb;
DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
uint32_t reserved_size = 0;
uint32_t submit_size = 0;
uint32_t curr_size = 0;
uint32_t num_hits = 0; void *cmd_start; char *cmd_next; int ret;
/* * Iterate in advance to check if really need plane update and find the * number of clips that actually are in plane src for fifo allocation.
*/
drm_atomic_helper_damage_iter_init(&iter, old_state, state);
drm_atomic_for_each_plane_damage(&iter, &clip)
num_hits++;
if (num_hits == 0) return 0;
if (update->vfb->bo) { struct vmw_framebuffer_bo *vfbbo =
container_of(update->vfb, typeof(*vfbbo), base);
/* * For screen targets we want a mappable bo, for everything else we want * accelerated i.e. host backed (vram or gmr) bo. If the display unit * is not screen target then mob's shouldn't be available.
*/ if (update->dev_priv->active_display_unit == vmw_du_screen_target) {
vmw_bo_placement_set(vfbbo->buffer,
VMW_BO_DOMAIN_SYS | VMW_BO_DOMAIN_MOB | VMW_BO_DOMAIN_GMR,
VMW_BO_DOMAIN_SYS | VMW_BO_DOMAIN_MOB | VMW_BO_DOMAIN_GMR);
} else {
WARN_ON(update->dev_priv->has_mob);
vmw_bo_placement_set_default_accelerated(vfbbo->buffer);
}
ret = vmw_validation_add_bo(&val_ctx, vfbbo->buffer);
} else { struct vmw_framebuffer_surface *vfbs =
container_of(update->vfb, typeof(*vfbs), base); struct vmw_surface *surf = vmw_user_object_surface(&vfbs->uo);
ret = vmw_validation_add_resource(&val_ctx, &surf->res,
0, VMW_RES_DIRTY_NONE, NULL,
NULL);
}
if (ret) return ret;
ret = vmw_validation_prepare(&val_ctx, update->mutex, update->intr); if (ret) goto out_unref;
reserved_size = update->calc_fifo_size(update, num_hits);
cmd_start = VMW_CMD_RESERVE(update->dev_priv, reserved_size); if (!cmd_start) {
ret = -ENOMEM; goto out_revert;
}
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.