/* * 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/module.h> #include <linux/kernel.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" struct drm_i915_gem_object *fb_obj; struct fb_info *framebuffer_alloc(size_t size, struct device *dev) { #define BYTES_PER_LONG (BITS_PER_LONG/8) #define PADDING (BYTES_PER_LONG - (sizeof(struct fb_info) % BYTES_PER_LONG)) int fb_info_size = sizeof(struct fb_info); struct fb_info *info; char *p; if (size) fb_info_size += PADDING; p = kzalloc(fb_info_size + size, GFP_KERNEL); if (!p) return NULL; info = (struct fb_info *) p; if (size) info->par = p + fb_info_size; return info; #undef PADDING #undef BYTES_PER_LONG } static struct fb_ops intelfb_ops = { .owner = THIS_MODULE, .fb_check_var = drm_fb_helper_check_var, .fb_set_par = drm_fb_helper_set_par, // .fb_fillrect = cfb_fillrect, // .fb_copyarea = cfb_copyarea, // .fb_imageblit = cfb_imageblit, // .fb_pan_display = drm_fb_helper_pan_display, .fb_blank = drm_fb_helper_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_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 drm_device *dev = helper->dev; struct drm_i915_private *dev_priv = dev->dev_private; struct fb_info *info; struct drm_framebuffer *fb; struct drm_mode_fb_cmd2 mode_cmd = {}; struct drm_i915_gem_object *obj; struct device *device = &dev->pdev->dev; int size, ret; ENTER(); /* 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 * ((sizes->surface_bpp + 7) / 8), 512); mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, sizes->surface_depth); size = mode_cmd.pitches[0] * mode_cmd.height; size = ALIGN(size, PAGE_SIZE); obj = fb_obj; if (!obj) { DRM_ERROR("failed to allocate framebuffer\n"); ret = -ENOMEM; goto out; } obj->stride = mode_cmd.pitches[0]; 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); goto out_unref; } info = framebuffer_alloc(0, device); 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; 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; /* 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 = (void*) 0xFE000000; 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); /* 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); return 0; out_unpin: i915_gem_object_unpin(obj); out_unref: drm_gem_object_unreference(&obj->base); mutex_unlock(&dev->struct_mutex); out: return ret; } static struct drm_fb_helper_funcs intel_fb_helper_funcs = { .gamma_set = intel_crtc_fb_gamma_set, .gamma_get = intel_crtc_fb_gamma_get, .fb_probe = intelfb_create, }; int intel_fbdev_init(struct drm_device *dev) { struct intel_fbdev *ifbdev; struct drm_i915_private *dev_priv = dev->dev_private; int ret; ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL); if (!ifbdev) return -ENOMEM; dev_priv->fbdev = ifbdev; ifbdev->helper.funcs = &intel_fb_helper_funcs; ret = drm_fb_helper_init(dev, &ifbdev->helper, INTEL_INFO(dev)->num_pipes, INTELFB_CONN_LIMIT); if (ret) { kfree(ifbdev); return ret; } 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; /* Due to peculiar init order wrt to hpd handling this is separate. */ drm_fb_helper_initial_config(&dev_priv->fbdev->helper, 32); } void intel_fb_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); }