.fb_debug_leave = drm_fb_helper_debug_leave,
};
-static int intelfb_create(struct drm_fb_helper *helper,
- struct drm_fb_helper_surface_size *sizes)
+static int intelfb_alloc(struct drm_fb_helper *helper,
+ struct drm_fb_helper_surface_size *sizes)
{
struct intel_fbdev *ifbdev =
container_of(helper, struct intel_fbdev, helper);
- struct drm_device *dev = helper->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct fb_info *info;
struct drm_framebuffer *fb;
+ struct drm_device *dev = helper->dev;
struct drm_mode_fb_cmd2 mode_cmd = {};
struct drm_i915_gem_object *obj;
- struct device *device = &dev->pdev->dev;
int size, ret;
/* we don't do packed 24bpp */
goto out;
}
- mutex_lock(&dev->struct_mutex);
-
/* Flush everything out, we'll be doing GTT only from now on */
ret = intel_pin_and_fence_fb_obj(dev, obj, NULL);
if (ret) {
- DRM_ERROR("failed to pin fb: %d\n", ret);
+ DRM_ERROR("failed to pin obj: %d\n", ret);
goto out_unref;
}
- info = framebuffer_alloc(0, device);
+ fb = __intel_framebuffer_create(dev, &mode_cmd, obj);
+ if (IS_ERR(fb)) {
+ ret = PTR_ERR(fb);
+ goto out_unpin;
+ }
+
+ ifbdev->fb = to_intel_framebuffer(fb);
+
+ return 0;
+
+out_unpin:
+ i915_gem_object_ggtt_unpin(obj);
+out_unref:
+ drm_gem_object_unreference(&obj->base);
+out:
+ return ret;
+}
+
+static int intelfb_create(struct drm_fb_helper *helper,
+ struct drm_fb_helper_surface_size *sizes)
+{
+ struct intel_fbdev *ifbdev =
+ container_of(helper, struct intel_fbdev, helper);
+ struct intel_framebuffer *intel_fb = ifbdev->fb;
+ struct drm_device *dev = helper->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct fb_info *info;
+ struct drm_framebuffer *fb;
+ struct drm_i915_gem_object *obj;
+ int size, ret;
+ bool prealloc = false;
+
+ mutex_lock(&dev->struct_mutex);
+
+ if (!intel_fb || WARN_ON(!intel_fb->obj)) {
+ DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n");
+ ret = intelfb_alloc(helper, sizes);
+ if (ret)
+ goto out_unlock;
+ intel_fb = ifbdev->fb;
+ } else {
+ DRM_DEBUG_KMS("re-using BIOS fb\n");
+ prealloc = true;
+ sizes->fb_width = intel_fb->base.width;
+ sizes->fb_height = intel_fb->base.height;
+ }
+
+ obj = intel_fb->obj;
+ size = obj->base.size;
+
+ info = framebuffer_alloc(0, &dev->pdev->dev);
if (!info) {
ret = -ENOMEM;
goto out_unpin;
info->par = helper;
- ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, obj);
- if (ret)
- goto out_unpin;
-
- fb = &ifbdev->ifb.base;
+ fb = &ifbdev->fb->base;
ifbdev->helper.fb = fb;
ifbdev->helper.fbdev = info;
* If the object is stolen however, it will be full of whatever
* garbage was left in there.
*/
- if (ifbdev->ifb.obj->stolen)
+ if (ifbdev->fb->obj->stolen && !prealloc)
memset_io(info->screen_base, 0, info->screen_size);
/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
fb->width, fb->height,
i915_gem_obj_ggtt_offset(obj), obj);
-
mutex_unlock(&dev->struct_mutex);
vga_switcheroo_client_fb_set(dev->pdev, info);
return 0;
out_unpin:
- i915_gem_object_unpin(obj);
-out_unref:
+ i915_gem_object_ggtt_unpin(obj);
drm_gem_object_unreference(&obj->base);
+out_unlock:
mutex_unlock(&dev->struct_mutex);
-out:
return ret;
}
*blue = intel_crtc->lut_b[regno] << 8;
}
+static struct drm_fb_helper_crtc *
+intel_fb_helper_crtc(struct drm_fb_helper *fb_helper, struct drm_crtc *crtc)
+{
+ int i;
+
+ for (i = 0; i < fb_helper->crtc_count; i++)
+ if (fb_helper->crtc_info[i].mode_set.crtc == crtc)
+ return &fb_helper->crtc_info[i];
+
+ return NULL;
+}
+
+/*
+ * Try to read the BIOS display configuration and use it for the initial
+ * fb configuration.
+ *
+ * The BIOS or boot loader will generally create an initial display
+ * configuration for us that includes some set of active pipes and displays.
+ * This routine tries to figure out which pipes and connectors are active
+ * and stuffs them into the crtcs and modes array given to us by the
+ * drm_fb_helper code.
+ *
+ * The overall sequence is:
+ * intel_fbdev_init - from driver load
+ * intel_fbdev_init_bios - initialize the intel_fbdev using BIOS data
+ * drm_fb_helper_init - build fb helper structs
+ * drm_fb_helper_single_add_all_connectors - more fb helper structs
+ * intel_fbdev_initial_config - apply the config
+ * drm_fb_helper_initial_config - call ->probe then register_framebuffer()
+ * drm_setup_crtcs - build crtc config for fbdev
+ * intel_fb_initial_config - find active connectors etc
+ * drm_fb_helper_single_fb_probe - set up fbdev
+ * intelfb_create - re-use or alloc fb, build out fbdev structs
+ *
+ * Note that we don't make special consideration whether we could actually
+ * switch to the selected modes without a full modeset. E.g. when the display
+ * is in VGA mode we need to recalculate watermarks and set a new high-res
+ * framebuffer anyway.
+ */
+static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,
+ struct drm_fb_helper_crtc **crtcs,
+ struct drm_display_mode **modes,
+ bool *enabled, int width, int height)
+{
+ struct drm_device *dev = fb_helper->dev;
+ int i, j;
+ bool *save_enabled;
+ bool fallback = true;
+ int num_connectors_enabled = 0;
+ int num_connectors_detected = 0;
+
+ /*
+ * If the user specified any force options, just bail here
+ * and use that config.
+ */
+ for (i = 0; i < fb_helper->connector_count; i++) {
+ struct drm_fb_helper_connector *fb_conn;
+ struct drm_connector *connector;
+
+ fb_conn = fb_helper->connector_info[i];
+ connector = fb_conn->connector;
+
+ if (!enabled[i])
+ continue;
+
+ if (connector->force != DRM_FORCE_UNSPECIFIED)
+ return false;
+ }
+
+ save_enabled = kcalloc(dev->mode_config.num_connector, sizeof(bool),
+ GFP_KERNEL);
+ if (!save_enabled)
+ return false;
+
+ memcpy(save_enabled, enabled, dev->mode_config.num_connector);
+
+ for (i = 0; i < fb_helper->connector_count; i++) {
+ struct drm_fb_helper_connector *fb_conn;
+ struct drm_connector *connector;
+ struct drm_encoder *encoder;
+ struct drm_fb_helper_crtc *new_crtc;
+
+ fb_conn = fb_helper->connector_info[i];
+ connector = fb_conn->connector;
+
+ if (connector->status == connector_status_connected)
+ num_connectors_detected++;
+
+ if (!enabled[i]) {
+ DRM_DEBUG_KMS("connector %d not enabled, skipping\n",
+ connector->base.id);
+ continue;
+ }
+
+ encoder = connector->encoder;
+ if (!encoder || WARN_ON(!encoder->crtc)) {
+ DRM_DEBUG_KMS("connector %d has no encoder or crtc, skipping\n",
+ connector->base.id);
+ enabled[i] = false;
+ continue;
+ }
+
+ num_connectors_enabled++;
+
+ new_crtc = intel_fb_helper_crtc(fb_helper, encoder->crtc);
+
+ /*
+ * Make sure we're not trying to drive multiple connectors
+ * with a single CRTC, since our cloning support may not
+ * match the BIOS.
+ */
+ for (j = 0; j < fb_helper->connector_count; j++) {
+ if (crtcs[j] == new_crtc) {
+ DRM_DEBUG_KMS("fallback: cloned configuration\n");
+ fallback = true;
+ goto out;
+ }
+ }
+
+ DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n",
+ fb_conn->connector->base.id);
+
+ /* go for command line mode first */
+ modes[i] = drm_pick_cmdline_mode(fb_conn, width, height);
+
+ /* try for preferred next */
+ if (!modes[i]) {
+ DRM_DEBUG_KMS("looking for preferred mode on connector %d\n",
+ fb_conn->connector->base.id);
+ modes[i] = drm_has_preferred_mode(fb_conn, width,
+ height);
+ }
+
+ /* last resort: use current mode */
+ if (!modes[i]) {
+ /*
+ * IMPORTANT: We want to use the adjusted mode (i.e.
+ * after the panel fitter upscaling) as the initial
+ * config, not the input mode, which is what crtc->mode
+ * usually contains. But since our current fastboot
+ * code puts a mode derived from the post-pfit timings
+ * into crtc->mode this works out correctly. We don't
+ * use hwmode anywhere right now, so use it for this
+ * since the fb helper layer wants a pointer to
+ * something we own.
+ */
+ intel_mode_from_pipe_config(&encoder->crtc->hwmode,
+ &to_intel_crtc(encoder->crtc)->config);
+ modes[i] = &encoder->crtc->hwmode;
+ }
+ crtcs[i] = new_crtc;
+
+ DRM_DEBUG_KMS("connector %s on crtc %d: %s\n",
+ drm_get_connector_name(connector),
+ encoder->crtc->base.id,
+ modes[i]->name);
+
+ fallback = false;
+ }
+
+ /*
+ * If the BIOS didn't enable everything it could, fall back to have the
+ * same user experiencing of lighting up as much as possible like the
+ * fbdev helper library.
+ */
+ if (num_connectors_enabled != num_connectors_detected &&
+ num_connectors_enabled < INTEL_INFO(dev)->num_pipes) {
+ DRM_DEBUG_KMS("fallback: Not all outputs enabled\n");
+ DRM_DEBUG_KMS("Enabled: %i, detected: %i\n", num_connectors_enabled,
+ num_connectors_detected);
+ fallback = true;
+ }
+
+out:
+ if (fallback) {
+ DRM_DEBUG_KMS("Not using firmware configuration\n");
+ memcpy(enabled, save_enabled, dev->mode_config.num_connector);
+ kfree(save_enabled);
+ return false;
+ }
+
+ kfree(save_enabled);
+ return true;
+}
+
static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
+ .initial_config = intel_fb_initial_config,
.gamma_set = intel_crtc_fb_gamma_set,
.gamma_get = intel_crtc_fb_gamma_get,
.fb_probe = intelfb_create,
drm_fb_helper_fini(&ifbdev->helper);
- drm_framebuffer_unregister_private(&ifbdev->ifb.base);
- intel_framebuffer_fini(&ifbdev->ifb);
+ drm_framebuffer_unregister_private(&ifbdev->fb->base);
+ drm_framebuffer_remove(&ifbdev->fb->base);
+}
+
+/*
+ * Build an intel_fbdev struct using a BIOS allocated framebuffer, if possible.
+ * The core display code will have read out the current plane configuration,
+ * so we use that to figure out if there's an object for us to use as the
+ * fb, and if so, we re-use it for the fbdev configuration.
+ *
+ * Note we only support a single fb shared across pipes for boot (mostly for
+ * fbcon), so we just find the biggest and use that.
+ */
+static bool intel_fbdev_init_bios(struct drm_device *dev,
+ struct intel_fbdev *ifbdev)
+{
+ struct intel_framebuffer *fb = NULL;
+ struct drm_crtc *crtc;
+ struct intel_crtc *intel_crtc;
+ struct intel_plane_config *plane_config = NULL;
+ unsigned int max_size = 0;
+
+ if (!i915.fastboot)
+ return false;
+
+ /* Find the largest fb */
+ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+ intel_crtc = to_intel_crtc(crtc);
+
+ if (!intel_crtc->active || !crtc->fb) {
+ DRM_DEBUG_KMS("pipe %c not active or no fb, skipping\n",
+ pipe_name(intel_crtc->pipe));
+ continue;
+ }
+
+ if (intel_crtc->plane_config.size > max_size) {
+ DRM_DEBUG_KMS("found possible fb from plane %c\n",
+ pipe_name(intel_crtc->pipe));
+ plane_config = &intel_crtc->plane_config;
+ fb = to_intel_framebuffer(crtc->fb);
+ max_size = plane_config->size;
+ }
+ }
+
+ if (!fb) {
+ DRM_DEBUG_KMS("no active fbs found, not using BIOS config\n");
+ goto out;
+ }
+
+ /* Now make sure all the pipes will fit into it */
+ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+ unsigned int cur_size;
+
+ intel_crtc = to_intel_crtc(crtc);
+
+ if (!intel_crtc->active) {
+ DRM_DEBUG_KMS("pipe %c not active, skipping\n",
+ pipe_name(intel_crtc->pipe));
+ continue;
+ }
+
+ DRM_DEBUG_KMS("checking plane %c for BIOS fb\n",
+ pipe_name(intel_crtc->pipe));
+
+ /*
+ * See if the plane fb we found above will fit on this
+ * pipe. Note we need to use the selected fb's bpp rather
+ * than the current pipe's, since they could be different.
+ */
+ cur_size = intel_crtc->config.adjusted_mode.crtc_hdisplay *
+ intel_crtc->config.adjusted_mode.crtc_vdisplay;
+ DRM_DEBUG_KMS("pipe %c area: %d\n", pipe_name(intel_crtc->pipe),
+ cur_size);
+ cur_size *= fb->base.bits_per_pixel / 8;
+ DRM_DEBUG_KMS("total size %d (bpp %d)\n", cur_size,
+ fb->base.bits_per_pixel / 8);
+
+ if (cur_size > max_size) {
+ DRM_DEBUG_KMS("fb not big enough for plane %c (%d vs %d)\n",
+ pipe_name(intel_crtc->pipe),
+ cur_size, max_size);
+ plane_config = NULL;
+ fb = NULL;
+ break;
+ }
+
+ DRM_DEBUG_KMS("fb big enough for plane %c (%d >= %d)\n",
+ pipe_name(intel_crtc->pipe),
+ max_size, cur_size);
+ }
+
+ if (!fb) {
+ DRM_DEBUG_KMS("BIOS fb not suitable for all pipes, not using\n");
+ goto out;
+ }
+
+ ifbdev->preferred_bpp = fb->base.bits_per_pixel;
+ ifbdev->fb = fb;
+
+ drm_framebuffer_reference(&ifbdev->fb->base);
+
+ /* Final pass to check if any active pipes don't have fbs */
+ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+ intel_crtc = to_intel_crtc(crtc);
+
+ if (!intel_crtc->active)
+ continue;
+
+ WARN(!crtc->fb,
+ "re-used BIOS config but lost an fb on crtc %d\n",
+ crtc->base.id);
+ }
+
+
+ DRM_DEBUG_KMS("using BIOS fb for initial console\n");
+ return true;
+
+out:
+
+ return false;
}
int intel_fbdev_init(struct drm_device *dev)
struct drm_i915_private *dev_priv = dev->dev_private;
int ret;
- ifbdev = kzalloc(sizeof(*ifbdev), GFP_KERNEL);
- if (!ifbdev)
+ if (WARN_ON(INTEL_INFO(dev)->num_pipes == 0))
+ return -ENODEV;
+
+ ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL);
+ if (ifbdev == NULL)
return -ENOMEM;
- dev_priv->fbdev = ifbdev;
ifbdev->helper.funcs = &intel_fb_helper_funcs;
+ if (!intel_fbdev_init_bios(dev, ifbdev))
+ ifbdev->preferred_bpp = 32;
ret = drm_fb_helper_init(dev, &ifbdev->helper,
- INTEL_INFO(dev)->num_pipes,
- 4);
+ INTEL_INFO(dev)->num_pipes, 4);
if (ret) {
kfree(ifbdev);
return ret;
}
+ dev_priv->fbdev = ifbdev;
drm_fb_helper_single_add_all_connectors(&ifbdev->helper);
return 0;
void intel_fbdev_initial_config(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_fbdev *ifbdev = dev_priv->fbdev;
/* Due to peculiar init order wrt to hpd handling this is separate. */
- drm_fb_helper_initial_config(&dev_priv->fbdev->helper, 32);
+ drm_fb_helper_initial_config(&ifbdev->helper, ifbdev->preferred_bpp);
}
void intel_fbdev_fini(struct drm_device *dev)
* been restored from swap. If the object is stolen however, it will be
* full of whatever garbage was left in there.
*/
- if (state == FBINFO_STATE_RUNNING && ifbdev->ifb.obj->stolen)
+ if (state == FBINFO_STATE_RUNNING && ifbdev->fb->obj->stolen)
memset_io(info->screen_base, 0, info->screen_size);
fb_set_suspend(info, state);
}
-MODULE_LICENSE("GPL and additional rights");
-
void intel_fbdev_output_poll_changed(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper);
+ if (dev_priv->fbdev)
+ drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper);
}
void intel_fbdev_restore_mode(struct drm_device *dev)
int ret;
struct drm_i915_private *dev_priv = dev->dev_private;
- if (INTEL_INFO(dev)->num_pipes == 0)
+ if (!dev_priv->fbdev)
return;
drm_modeset_lock_all(dev);
projects / deliverable / linux.git / blobdiff