| /* |
| * Copyright © 2007 David Airlie |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| * DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: |
| * David Airlie |
| */ |
| |
| #include <linux/async.h> |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/console.h> |
| #include <linux/errno.h> |
| #include <linux/string.h> |
| #include <linux/mm.h> |
| #include <linux/tty.h> |
| #include <linux/sysrq.h> |
| #include <linux/delay.h> |
| #include <linux/fb.h> |
| #include <linux/init.h> |
| #include <linux/vga_switcheroo.h> |
| |
| #include <drm/drmP.h> |
| #include <drm/drm_crtc.h> |
| #include <drm/drm_fb_helper.h> |
| #include "intel_drv.h" |
| #include <drm/i915_drm.h> |
| #include "i915_drv.h" |
| |
| static int intel_fbdev_set_par(struct fb_info *info) |
| { |
| struct drm_fb_helper *fb_helper = info->par; |
| struct intel_fbdev *ifbdev = |
| container_of(fb_helper, struct intel_fbdev, helper); |
| int ret; |
| |
| ret = drm_fb_helper_set_par(info); |
| |
| if (ret == 0) { |
| mutex_lock(&fb_helper->dev->struct_mutex); |
| intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT); |
| mutex_unlock(&fb_helper->dev->struct_mutex); |
| } |
| |
| return ret; |
| } |
| |
| static int intel_fbdev_blank(int blank, struct fb_info *info) |
| { |
| struct drm_fb_helper *fb_helper = info->par; |
| struct intel_fbdev *ifbdev = |
| container_of(fb_helper, struct intel_fbdev, helper); |
| int ret; |
| |
| ret = drm_fb_helper_blank(blank, info); |
| |
| if (ret == 0) { |
| mutex_lock(&fb_helper->dev->struct_mutex); |
| intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT); |
| mutex_unlock(&fb_helper->dev->struct_mutex); |
| } |
| |
| return ret; |
| } |
| |
| static int intel_fbdev_pan_display(struct fb_var_screeninfo *var, |
| struct fb_info *info) |
| { |
| struct drm_fb_helper *fb_helper = info->par; |
| struct intel_fbdev *ifbdev = |
| container_of(fb_helper, struct intel_fbdev, helper); |
| |
| int ret; |
| ret = drm_fb_helper_pan_display(var, info); |
| |
| if (ret == 0) { |
| mutex_lock(&fb_helper->dev->struct_mutex); |
| intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT); |
| mutex_unlock(&fb_helper->dev->struct_mutex); |
| } |
| |
| return ret; |
| } |
| |
| static struct fb_ops intelfb_ops = { |
| .owner = THIS_MODULE, |
| .fb_check_var = drm_fb_helper_check_var, |
| .fb_set_par = intel_fbdev_set_par, |
| .fb_fillrect = drm_fb_helper_cfb_fillrect, |
| .fb_copyarea = drm_fb_helper_cfb_copyarea, |
| .fb_imageblit = drm_fb_helper_cfb_imageblit, |
| .fb_pan_display = intel_fbdev_pan_display, |
| .fb_blank = intel_fbdev_blank, |
| .fb_setcmap = drm_fb_helper_setcmap, |
| .fb_debug_enter = drm_fb_helper_debug_enter, |
| .fb_debug_leave = drm_fb_helper_debug_leave, |
| }; |
| |
| 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_framebuffer *fb; |
| struct drm_device *dev = helper->dev; |
| struct drm_i915_private *dev_priv = to_i915(dev); |
| struct i915_ggtt *ggtt = &dev_priv->ggtt; |
| struct drm_mode_fb_cmd2 mode_cmd = {}; |
| struct drm_i915_gem_object *obj = NULL; |
| int size, ret; |
| |
| /* we don't do packed 24bpp */ |
| if (sizes->surface_bpp == 24) |
| sizes->surface_bpp = 32; |
| |
| mode_cmd.width = sizes->surface_width; |
| mode_cmd.height = sizes->surface_height; |
| |
| mode_cmd.pitches[0] = ALIGN(mode_cmd.width * |
| DIV_ROUND_UP(sizes->surface_bpp, 8), 64); |
| mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, |
| sizes->surface_depth); |
| |
| mutex_lock(&dev->struct_mutex); |
| |
| size = mode_cmd.pitches[0] * mode_cmd.height; |
| size = PAGE_ALIGN(size); |
| |
| /* If the FB is too big, just don't use it since fbdev is not very |
| * important and we should probably use that space with FBC or other |
| * features. */ |
| if (size * 2 < ggtt->stolen_usable_size) |
| obj = i915_gem_object_create_stolen(dev, size); |
| if (obj == NULL) |
| obj = i915_gem_object_create(dev, size); |
| if (IS_ERR(obj)) { |
| DRM_ERROR("failed to allocate framebuffer\n"); |
| ret = PTR_ERR(obj); |
| goto out; |
| } |
| |
| fb = __intel_framebuffer_create(dev, &mode_cmd, obj); |
| if (IS_ERR(fb)) { |
| drm_gem_object_unreference(&obj->base); |
| ret = PTR_ERR(fb); |
| goto out; |
| } |
| |
| mutex_unlock(&dev->struct_mutex); |
| |
| ifbdev->fb = to_intel_framebuffer(fb); |
| |
| return 0; |
| |
| out: |
| mutex_unlock(&dev->struct_mutex); |
| 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 = to_i915(dev); |
| struct i915_ggtt *ggtt = &dev_priv->ggtt; |
| struct fb_info *info; |
| struct drm_framebuffer *fb; |
| struct i915_vma *vma; |
| struct drm_i915_gem_object *obj; |
| bool prealloc = false; |
| void *vaddr; |
| int ret; |
| |
| if (intel_fb && |
| (sizes->fb_width > intel_fb->base.width || |
| sizes->fb_height > intel_fb->base.height)) { |
| DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d)," |
| " releasing it\n", |
| intel_fb->base.width, intel_fb->base.height, |
| sizes->fb_width, sizes->fb_height); |
| drm_framebuffer_unreference(&intel_fb->base); |
| intel_fb = ifbdev->fb = NULL; |
| } |
| 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) |
| return ret; |
| 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; |
| |
| mutex_lock(&dev->struct_mutex); |
| |
| /* Pin the GGTT vma for our access via info->screen_base. |
| * This also validates that any existing fb inherited from the |
| * BIOS is suitable for own access. |
| */ |
| ret = intel_pin_and_fence_fb_obj(&ifbdev->fb->base, BIT(DRM_ROTATE_0)); |
| if (ret) |
| goto out_unlock; |
| |
| info = drm_fb_helper_alloc_fbi(helper); |
| if (IS_ERR(info)) { |
| DRM_ERROR("Failed to allocate fb_info\n"); |
| ret = PTR_ERR(info); |
| goto out_unpin; |
| } |
| |
| info->par = helper; |
| |
| fb = &ifbdev->fb->base; |
| |
| ifbdev->helper.fb = fb; |
| |
| strcpy(info->fix.id, "inteldrmfb"); |
| |
| info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; |
| info->fbops = &intelfb_ops; |
| |
| vma = i915_gem_obj_to_ggtt(obj); |
| |
| /* setup aperture base/size for vesafb takeover */ |
| info->apertures->ranges[0].base = dev->mode_config.fb_base; |
| info->apertures->ranges[0].size = ggtt->mappable_end; |
| |
| info->fix.smem_start = dev->mode_config.fb_base + vma->node.start; |
| info->fix.smem_len = vma->node.size; |
| |
| vaddr = i915_vma_pin_iomap(vma); |
| if (IS_ERR(vaddr)) { |
| DRM_ERROR("Failed to remap framebuffer into virtual memory\n"); |
| ret = PTR_ERR(vaddr); |
| goto out_destroy_fbi; |
| } |
| info->screen_base = vaddr; |
| info->screen_size = vma->node.size; |
| |
| /* This driver doesn't need a VT switch to restore the mode on resume */ |
| info->skip_vt_switch = true; |
| |
| drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); |
| drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height); |
| |
| /* If the object is shmemfs backed, it will have given us zeroed pages. |
| * If the object is stolen however, it will be full of whatever |
| * garbage was left in there. |
| */ |
| 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) */ |
| |
| DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08llx, bo %p\n", |
| 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_destroy_fbi: |
| drm_fb_helper_release_fbi(helper); |
| out_unpin: |
| intel_unpin_fb_obj(&ifbdev->fb->base, BIT(DRM_ROTATE_0)); |
| out_unlock: |
| mutex_unlock(&dev->struct_mutex); |
| return ret; |
| } |
| |
| /** Sets the color ramps on behalf of RandR */ |
| static void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, |
| u16 blue, int regno) |
| { |
| struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| |
| intel_crtc->lut_r[regno] = red >> 8; |
| intel_crtc->lut_g[regno] = green >> 8; |
| intel_crtc->lut_b[regno] = blue >> 8; |
| } |
| |
| static void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, |
| u16 *blue, int regno) |
| { |
| struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| |
| *red = intel_crtc->lut_r[regno] << 8; |
| *green = intel_crtc->lut_g[regno] << 8; |
| *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, |
| struct drm_fb_offset *offsets, |
| 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; |
| uint64_t conn_configured = 0, mask; |
| int pass = 0; |
| |
| save_enabled = kcalloc(fb_helper->connector_count, sizeof(bool), |
| GFP_KERNEL); |
| if (!save_enabled) |
| return false; |
| |
| memcpy(save_enabled, enabled, fb_helper->connector_count); |
| mask = (1 << fb_helper->connector_count) - 1; |
| retry: |
| 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; |
| struct intel_crtc *intel_crtc; |
| |
| fb_conn = fb_helper->connector_info[i]; |
| connector = fb_conn->connector; |
| |
| if (conn_configured & (1 << i)) |
| continue; |
| |
| if (pass == 0 && !connector->has_tile) |
| continue; |
| |
| if (connector->status == connector_status_connected) |
| num_connectors_detected++; |
| |
| if (!enabled[i]) { |
| DRM_DEBUG_KMS("connector %s not enabled, skipping\n", |
| connector->name); |
| conn_configured |= (1 << i); |
| continue; |
| } |
| |
| if (connector->force == DRM_FORCE_OFF) { |
| DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n", |
| connector->name); |
| enabled[i] = false; |
| continue; |
| } |
| |
| encoder = connector->state->best_encoder; |
| if (!encoder || WARN_ON(!connector->state->crtc)) { |
| if (connector->force > DRM_FORCE_OFF) |
| goto bail; |
| |
| DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n", |
| connector->name); |
| enabled[i] = false; |
| conn_configured |= (1 << i); |
| continue; |
| } |
| |
| num_connectors_enabled++; |
| |
| intel_crtc = to_intel_crtc(connector->state->crtc); |
| for (j = 0; j < 256; j++) { |
| intel_crtc->lut_r[j] = j; |
| intel_crtc->lut_g[j] = j; |
| intel_crtc->lut_b[j] = j; |
| } |
| |
| new_crtc = intel_fb_helper_crtc(fb_helper, connector->state->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"); |
| goto bail; |
| } |
| } |
| |
| DRM_DEBUG_KMS("looking for cmdline mode on connector %s\n", |
| connector->name); |
| |
| /* 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 %s %d\n", |
| connector->name, connector->has_tile); |
| modes[i] = drm_has_preferred_mode(fb_conn, width, |
| height); |
| } |
| |
| /* No preferred mode marked by the EDID? Are there any modes? */ |
| if (!modes[i] && !list_empty(&connector->modes)) { |
| DRM_DEBUG_KMS("using first mode listed on connector %s\n", |
| connector->name); |
| modes[i] = list_first_entry(&connector->modes, |
| struct drm_display_mode, |
| head); |
| } |
| |
| /* 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 |
| * code puts a mode derived from the post-pfit timings |
| * into crtc->mode this works out correctly. |
| * |
| * This is crtc->mode and not crtc->state->mode for the |
| * fastboot check to work correctly. crtc_state->mode has |
| * I915_MODE_FLAG_INHERITED, which we clear to force check |
| * state. |
| */ |
| DRM_DEBUG_KMS("looking for current mode on connector %s\n", |
| connector->name); |
| modes[i] = &connector->state->crtc->mode; |
| } |
| crtcs[i] = new_crtc; |
| |
| DRM_DEBUG_KMS("connector %s on [CRTC:%d:%s]: %dx%d%s\n", |
| connector->name, |
| connector->state->crtc->base.id, |
| connector->state->crtc->name, |
| modes[i]->hdisplay, modes[i]->vdisplay, |
| modes[i]->flags & DRM_MODE_FLAG_INTERLACE ? "i" :""); |
| |
| fallback = false; |
| conn_configured |= (1 << i); |
| } |
| |
| if ((conn_configured & mask) != mask) { |
| pass++; |
| goto retry; |
| } |
| |
| /* |
| * 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; |
| } |
| |
| if (fallback) { |
| bail: |
| DRM_DEBUG_KMS("Not using firmware configuration\n"); |
| memcpy(enabled, save_enabled, fb_helper->connector_count); |
| kfree(save_enabled); |
| return false; |
| } |
| |
| kfree(save_enabled); |
| return true; |
| } |
| |
| static const 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, |
| }; |
| |
| static void intel_fbdev_destroy(struct intel_fbdev *ifbdev) |
| { |
| /* We rely on the object-free to release the VMA pinning for |
| * the info->screen_base mmaping. Leaking the VMA is simpler than |
| * trying to rectify all the possible error paths leading here. |
| */ |
| |
| drm_fb_helper_unregister_fbi(&ifbdev->helper); |
| drm_fb_helper_release_fbi(&ifbdev->helper); |
| |
| drm_fb_helper_fini(&ifbdev->helper); |
| |
| if (ifbdev->fb) { |
| mutex_lock(&ifbdev->helper.dev->struct_mutex); |
| intel_unpin_fb_obj(&ifbdev->fb->base, BIT(DRM_ROTATE_0)); |
| mutex_unlock(&ifbdev->helper.dev->struct_mutex); |
| |
| drm_framebuffer_remove(&ifbdev->fb->base); |
| } |
| |
| kfree(ifbdev); |
| } |
| |
| /* |
| * 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; |
| unsigned int max_size = 0; |
| |
| /* Find the largest fb */ |
| for_each_crtc(dev, crtc) { |
| struct drm_i915_gem_object *obj = |
| intel_fb_obj(crtc->primary->state->fb); |
| intel_crtc = to_intel_crtc(crtc); |
| |
| if (!crtc->state->active || !obj) { |
| DRM_DEBUG_KMS("pipe %c not active or no fb, skipping\n", |
| pipe_name(intel_crtc->pipe)); |
| continue; |
| } |
| |
| if (obj->base.size > max_size) { |
| DRM_DEBUG_KMS("found possible fb from plane %c\n", |
| pipe_name(intel_crtc->pipe)); |
| fb = to_intel_framebuffer(crtc->primary->state->fb); |
| max_size = obj->base.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 */ |
| for_each_crtc(dev, crtc) { |
| unsigned int cur_size; |
| |
| intel_crtc = to_intel_crtc(crtc); |
| |
| if (!crtc->state->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 pitch and bpp |
| * rather than the current pipe's, since they differ. |
| */ |
| cur_size = intel_crtc->config->base.adjusted_mode.crtc_hdisplay; |
| cur_size = cur_size * fb->base.bits_per_pixel / 8; |
| if (fb->base.pitches[0] < cur_size) { |
| DRM_DEBUG_KMS("fb not wide enough for plane %c (%d vs %d)\n", |
| pipe_name(intel_crtc->pipe), |
| cur_size, fb->base.pitches[0]); |
| fb = NULL; |
| break; |
| } |
| |
| cur_size = intel_crtc->config->base.adjusted_mode.crtc_vdisplay; |
| cur_size = intel_fb_align_height(dev, cur_size, |
| fb->base.pixel_format, |
| fb->base.modifier[0]); |
| cur_size *= fb->base.pitches[0]; |
| DRM_DEBUG_KMS("pipe %c area: %dx%d, bpp: %d, size: %d\n", |
| pipe_name(intel_crtc->pipe), |
| intel_crtc->config->base.adjusted_mode.crtc_hdisplay, |
| intel_crtc->config->base.adjusted_mode.crtc_vdisplay, |
| fb->base.bits_per_pixel, |
| cur_size); |
| |
| 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); |
| 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 */ |
| for_each_crtc(dev, crtc) { |
| intel_crtc = to_intel_crtc(crtc); |
| |
| if (!crtc->state->active) |
| continue; |
| |
| WARN(!crtc->primary->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; |
| } |
| |
| static void intel_fbdev_suspend_worker(struct work_struct *work) |
| { |
| intel_fbdev_set_suspend(container_of(work, |
| struct drm_i915_private, |
| fbdev_suspend_work)->dev, |
| FBINFO_STATE_RUNNING, |
| true); |
| } |
| |
| int intel_fbdev_init(struct drm_device *dev) |
| { |
| struct intel_fbdev *ifbdev; |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| int ret; |
| |
| if (WARN_ON(INTEL_INFO(dev)->num_pipes == 0)) |
| return -ENODEV; |
| |
| ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL); |
| if (ifbdev == NULL) |
| return -ENOMEM; |
| |
| drm_fb_helper_prepare(dev, &ifbdev->helper, &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); |
| if (ret) { |
| kfree(ifbdev); |
| return ret; |
| } |
| |
| dev_priv->fbdev = ifbdev; |
| INIT_WORK(&dev_priv->fbdev_suspend_work, intel_fbdev_suspend_worker); |
| |
| drm_fb_helper_single_add_all_connectors(&ifbdev->helper); |
| |
| return 0; |
| } |
| |
| static void intel_fbdev_initial_config(void *data, async_cookie_t cookie) |
| { |
| struct intel_fbdev *ifbdev = data; |
| |
| /* Due to peculiar init order wrt to hpd handling this is separate. */ |
| if (drm_fb_helper_initial_config(&ifbdev->helper, |
| ifbdev->preferred_bpp)) |
| intel_fbdev_fini(ifbdev->helper.dev); |
| } |
| |
| void intel_fbdev_initial_config_async(struct drm_device *dev) |
| { |
| struct intel_fbdev *ifbdev = to_i915(dev)->fbdev; |
| |
| ifbdev->cookie = async_schedule(intel_fbdev_initial_config, ifbdev); |
| } |
| |
| static void intel_fbdev_sync(struct intel_fbdev *ifbdev) |
| { |
| if (!ifbdev->cookie) |
| return; |
| |
| /* Only serialises with all preceding async calls, hence +1 */ |
| async_synchronize_cookie(ifbdev->cookie + 1); |
| ifbdev->cookie = 0; |
| } |
| |
| void intel_fbdev_fini(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct intel_fbdev *ifbdev = dev_priv->fbdev; |
| |
| if (!ifbdev) |
| return; |
| |
| flush_work(&dev_priv->fbdev_suspend_work); |
| if (!current_is_async()) |
| intel_fbdev_sync(ifbdev); |
| |
| intel_fbdev_destroy(ifbdev); |
| dev_priv->fbdev = NULL; |
| } |
| |
| void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct intel_fbdev *ifbdev = dev_priv->fbdev; |
| struct fb_info *info; |
| |
| if (!ifbdev) |
| return; |
| |
| info = ifbdev->helper.fbdev; |
| |
| if (synchronous) { |
| /* Flush any pending work to turn the console on, and then |
| * wait to turn it off. It must be synchronous as we are |
| * about to suspend or unload the driver. |
| * |
| * Note that from within the work-handler, we cannot flush |
| * ourselves, so only flush outstanding work upon suspend! |
| */ |
| if (state != FBINFO_STATE_RUNNING) |
| flush_work(&dev_priv->fbdev_suspend_work); |
| console_lock(); |
| } else { |
| /* |
| * The console lock can be pretty contented on resume due |
| * to all the printk activity. Try to keep it out of the hot |
| * path of resume if possible. |
| */ |
| WARN_ON(state != FBINFO_STATE_RUNNING); |
| if (!console_trylock()) { |
| /* Don't block our own workqueue as this can |
| * be run in parallel with other i915.ko tasks. |
| */ |
| schedule_work(&dev_priv->fbdev_suspend_work); |
| return; |
| } |
| } |
| |
| /* On resume from hibernation: If the object is shmemfs backed, it has |
| * 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->fb->obj->stolen) |
| memset_io(info->screen_base, 0, info->screen_size); |
| |
| drm_fb_helper_set_suspend(&ifbdev->helper, state); |
| console_unlock(); |
| } |
| |
| void intel_fbdev_output_poll_changed(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| 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; |
| struct intel_fbdev *ifbdev = dev_priv->fbdev; |
| struct drm_fb_helper *fb_helper; |
| |
| if (!ifbdev) |
| return; |
| |
| intel_fbdev_sync(ifbdev); |
| |
| fb_helper = &ifbdev->helper; |
| |
| ret = drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper); |
| if (ret) { |
| DRM_DEBUG("failed to restore crtc mode\n"); |
| } else { |
| mutex_lock(&fb_helper->dev->struct_mutex); |
| intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT); |
| mutex_unlock(&fb_helper->dev->struct_mutex); |
| } |
| } |