/* * 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) { /* * FIXME: fbdev presumes that all callbacks also work from * atomic contexts and relies on that for emergency oops * printing. KMS totally doesn't do that and the locking here is * by far not the only place this goes wrong. Ignore this for * now until we solve this for real. */ mutex_lock(&fb_helper->dev->struct_mutex); ret = i915_gem_object_set_to_gtt_domain(ifbdev->fb->obj, true); 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) { /* * FIXME: fbdev presumes that all callbacks also work from * atomic contexts and relies on that for emergency oops * printing. KMS totally doesn't do that and the locking here is * by far not the only place this goes wrong. Ignore this for * now until we solve this for real. */ mutex_lock(&fb_helper->dev->struct_mutex); intel_fb_obj_invalidate(ifbdev->fb->obj, NULL, 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) { /* * FIXME: fbdev presumes that all callbacks also work from * atomic contexts and relies on that for emergency oops * printing. KMS totally doesn't do that and the locking here is * by far not the only place this goes wrong. Ignore this for * now until we solve this for real. */ mutex_lock(&fb_helper->dev->struct_mutex); intel_fb_obj_invalidate(ifbdev->fb->obj, NULL, 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 = cfb_fillrect, .fb_copyarea = cfb_copyarea, .fb_imageblit = 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_mode_fb_cmd2 mode_cmd = {}; struct drm_i915_gem_object *obj; 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); size = mode_cmd.pitches[0] * mode_cmd.height; size = PAGE_ALIGN(size); obj = i915_gem_object_create_stolen(dev, size); if (obj == NULL) obj = i915_gem_alloc_object(dev, size); if (!obj) { DRM_ERROR("failed to allocate framebuffer\n"); ret = -ENOMEM; goto out; } fb = __intel_framebuffer_create(dev, &mode_cmd, obj); if (IS_ERR(fb)) { ret = PTR_ERR(fb); goto out_unref; } /* Flush everything out, we'll be doing GTT only from now on */ ret = intel_pin_and_fence_fb_obj(NULL, fb, NULL, NULL); if (ret) { DRM_ERROR("failed to pin obj: %d\n", ret); goto out_fb; } ifbdev->fb = to_intel_framebuffer(fb); return 0; out_fb: drm_framebuffer_remove(fb);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 && (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) 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; fb = &ifbdev->fb->base; ifbdev->helper.fb = fb; ifbdev->helper.fbdev = info; strcpy(info->fix.id, "inteldrmfb"); info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; info->fbops = &intelfb_ops; ret = fb_alloc_cmap(&info->cmap, 256, 0); if (ret) { ret = -ENOMEM; goto out_unpin; } /* setup aperture base/size for vesafb takeover */ info->apertures = alloc_apertures(1); if (!info->apertures) { ret = -ENOMEM; goto out_unpin; } info->apertures->ranges[0].base = dev->mode_config.fb_base; info->apertures->ranges[0].size = dev_priv->gtt.mappable_end; info->fix.smem_start = dev->mode_config.fb_base + i915_gem_obj_ggtt_offset(obj); info->fix.smem_len = size; info->screen_base = ioremap_wc(dev_priv->gtt.mappable_base + i915_gem_obj_ggtt_offset(obj), size); if (!info->screen_base) { ret = -ENOSPC; goto out_unpin; } info->screen_size = 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%08lx, 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_unpin: i915_gem_object_ggtt_unpin(obj); drm_gem_object_unreference(&obj->base);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(dev->mode_config.num_connector, sizeof(bool), GFP_KERNEL); if (!save_enabled) return false; memcpy(save_enabled, enabled, dev->mode_config.num_connector); 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; 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->encoder; if (!encoder || WARN_ON(!encoder->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++; 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"); 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 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. */ DRM_DEBUG_KMS("looking for current mode on connector %s\n", connector->name); intel_mode_from_pipe_config(&encoder->crtc->hwmode, to_intel_crtc(encoder->crtc)->config); modes[i] = &encoder->crtc->hwmode; } crtcs[i] = new_crtc;Lines 1–500 of 835. Load more
/* * 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) { /* * FIXME: fbdev presumes that all callbacks also work from * atomic contexts and relies on that for emergency oops * printing. KMS totally doesn't do that and the locking here is * by far not the only place this goes wrong. Ignore this for * now until we solve this for real. */ mutex_lock(&fb_helper->dev->struct_mutex); ret = i915_gem_object_set_to_gtt_domain(ifbdev->fb->obj, true); 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) { /* * FIXME: fbdev presumes that all callbacks also work from * atomic contexts and relies on that for emergency oops * printing. KMS totally doesn't do that and the locking here is * by far not the only place this goes wrong. Ignore this for * now until we solve this for real. */ mutex_lock(&fb_helper->dev->struct_mutex); intel_fb_obj_invalidate(ifbdev->fb->obj, NULL, 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) { /* * FIXME: fbdev presumes that all callbacks also work from * atomic contexts and relies on that for emergency oops * printing. KMS totally doesn't do that and the locking here is * by far not the only place this goes wrong. Ignore this for * now until we solve this for real. */ mutex_lock(&fb_helper->dev->struct_mutex); intel_fb_obj_invalidate(ifbdev->fb->obj, NULL, 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 = cfb_fillrect, .fb_copyarea = cfb_copyarea, .fb_imageblit = 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_mode_fb_cmd2 mode_cmd = {}; struct drm_i915_gem_object *obj; 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); size = mode_cmd.pitches[0] * mode_cmd.height; size = PAGE_ALIGN(size); obj = i915_gem_object_create_stolen(dev, size); if (obj == NULL) obj = i915_gem_alloc_object(dev, size); if (!obj) { DRM_ERROR("failed to allocate framebuffer\n"); ret = -ENOMEM; goto out; } fb = __intel_framebuffer_create(dev, &mode_cmd, obj); if (IS_ERR(fb)) { ret = PTR_ERR(fb); goto out_unref; } /* Flush everything out, we'll be doing GTT only from now on */ ret = intel_pin_and_fence_fb_obj(NULL, fb, NULL, NULL); if (ret) { DRM_ERROR("failed to pin obj: %d\n", ret); goto out_fb; } ifbdev->fb = to_intel_framebuffer(fb); return 0; out_fb: drm_framebuffer_remove(fb); 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 && (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) 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; fb = &ifbdev->fb->base; ifbdev->helper.fb = fb; ifbdev->helper.fbdev = info; strcpy(info->fix.id, "inteldrmfb"); info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; info->fbops = &intelfb_ops; ret = fb_alloc_cmap(&info->cmap, 256, 0); if (ret) { ret = -ENOMEM; goto out_unpin; } /* setup aperture base/size for vesafb takeover */ info->apertures = alloc_apertures(1); if (!info->apertures) { ret = -ENOMEM; goto out_unpin; } info->apertures->ranges[0].base = dev->mode_config.fb_base; info->apertures->ranges[0].size = dev_priv->gtt.mappable_end; info->fix.smem_start = dev->mode_config.fb_base + i915_gem_obj_ggtt_offset(obj); info->fix.smem_len = size; info->screen_base = ioremap_wc(dev_priv->gtt.mappable_base + i915_gem_obj_ggtt_offset(obj), size); if (!info->screen_base) { ret = -ENOSPC; goto out_unpin; } info->screen_size = 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%08lx, 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_unpin: i915_gem_object_ggtt_unpin(obj); drm_gem_object_unreference(&obj->base); 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(dev->mode_config.num_connector, sizeof(bool), GFP_KERNEL); if (!save_enabled) return false; memcpy(save_enabled, enabled, dev->mode_config.num_connector); 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; 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->encoder; if (!encoder || WARN_ON(!encoder->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++; 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"); 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 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. */ DRM_DEBUG_KMS("looking for current mode on connector %s\n", connector->name); intel_mode_from_pipe_config(&encoder->crtc->hwmode, to_intel_crtc(encoder->crtc)->config); modes[i] = &encoder->crtc->hwmode; } crtcs[i] = new_crtc;