/* * 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/slab.h> #include <linux/sysrq.h> #include <linux/delay.h> #include <linux/fb.h> #include <linux/init.h> #include "drmP.h" #include "drm.h" #include "drm_crtc.h" #include "drm_fb_helper.h" #include "intel_drv.h" #include "i915_drm.h" #include "i915_drv.h" struct intelfb_par { struct drm_fb_helper helper; struct intel_framebuffer *intel_fb; struct drm_display_mode *our_mode; }; 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_setcolreg = drm_fb_helper_setcolreg, .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, }; static struct drm_fb_helper_funcs intel_fb_helper_funcs = { .gamma_set = intel_crtc_fb_gamma_set, .gamma_get = intel_crtc_fb_gamma_get, }; /** * Curretly it is assumed that the old framebuffer is reused. * * LOCKING * caller should hold the mode config lock. * */ int intelfb_resize(struct drm_device *dev, struct drm_crtc *crtc) { struct fb_info *info; struct drm_framebuffer *fb; struct drm_display_mode *mode = crtc->desired_mode; fb = crtc->fb; if (!fb) return 1; info = fb->fbdev; if (!info) return 1; if (!mode) return 1; info->var.xres = mode->hdisplay; info->var.right_margin = mode->hsync_start - mode->hdisplay; info->var.hsync_len = mode->hsync_end - mode->hsync_start; info->var.left_margin = mode->htotal - mode->hsync_end; info->var.yres = mode->vdisplay; info->var.lower_margin = mode->vsync_start - mode->vdisplay; info->var.vsync_len = mode->vsync_end - mode->vsync_start; info->var.upper_margin = mode->vtotal - mode->vsync_end; info->var.pixclock = 10000000 / mode->htotal * 1000 / mode->vtotal * 100; /* avoid overflow */ info->var.pixclock = info->var.pixclock * 1000 / mode->vrefresh; return 0; } EXPORT_SYMBOL(intelfb_resize); static int intelfb_create(struct drm_device *dev, uint32_t fb_width, uint32_t fb_height, uint32_t surface_width, uint32_t surface_height, uint32_t surface_depth, uint32_t surface_bpp, struct drm_framebuffer **fb_p) { struct fb_info *info; struct intelfb_par *par; struct drm_framebuffer *fb; struct intel_framebuffer *intel_fb; struct drm_mode_fb_cmd mode_cmd; struct drm_gem_object *fbo = NULL; struct drm_i915_gem_object *obj_priv; struct device *device = &dev->pdev->dev; int size, ret, mmio_bar = IS_I9XX(dev) ? 0 : 1; /* we don't do packed 24bpp */ if (surface_bpp == 24) surface_bpp = 32; mode_cmd.width = surface_width; mode_cmd.height = surface_height; mode_cmd.bpp = surface_bpp; mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64); mode_cmd.depth = surface_depth; size = mode_cmd.pitch * mode_cmd.height; size = ALIGN(size, PAGE_SIZE); fbo = drm_gem_object_alloc(dev, size); if (!fbo) { DRM_ERROR("failed to allocate framebuffer\n"); ret = -ENOMEM; goto out; } obj_priv = fbo->driver_private; mutex_lock(&dev->struct_mutex); ret = i915_gem_object_pin(fbo, PAGE_SIZE); if (ret) { DRM_ERROR("failed to pin fb: %d\n", ret); goto out_unref; } /* Flush everything out, we'll be doing GTT only from now on */ i915_gem_object_set_to_gtt_domain(fbo, 1); ret = intel_framebuffer_create(dev, &mode_cmd, &fb, fbo); if (ret) { DRM_ERROR("failed to allocate fb.\n"); goto out_unpin; } list_add(&fb->filp_head, &dev->mode_config.fb_kernel_list); intel_fb = to_intel_framebuffer(fb); *fb_p = fb; info = framebuffer_alloc(sizeof(struct intelfb_par), device); if (!info) { ret = -ENOMEM; goto out_unpin; } par = info->par; par->helper.funcs = &intel_fb_helper_funcs; par->helper.dev = dev; ret = drm_fb_helper_init_crtc_count(&par->helper, 2, INTELFB_CONN_LIMIT); if (ret) goto out_unref; strcpy(info->fix.id, "inteldrmfb"); info->flags = FBINFO_DEFAULT; info->fbops = &intelfb_ops; /* setup aperture base/size for vesafb takeover */ info->aperture_base = dev->mode_config.fb_base; if (IS_I9XX(dev)) info->aperture_size = pci_resource_len(dev->pdev, 2); else info->aperture_size = pci_resource_len(dev->pdev, 0); info->fix.smem_start = dev->mode_config.fb_base + obj_priv->gtt_offset; info->fix.smem_len = size; info->flags = FBINFO_DEFAULT; info->screen_base = ioremap_wc(dev->agp->base + obj_priv->gtt_offset, size); if (!info->screen_base) { ret = -ENOSPC; goto out_unpin; } info->screen_size = size; // memset(info->screen_base, 0, size); drm_fb_helper_fill_fix(info, fb->pitch, fb->depth); drm_fb_helper_fill_var(info, fb, fb_width, fb_height); /* FIXME: we really shouldn't expose mmio space at all */ info->fix.mmio_start = pci_resource_start(dev->pdev, mmio_bar); info->fix.mmio_len = pci_resource_len(dev->pdev, mmio_bar); info->pixmap.size = 64*1024; info->pixmap.buf_align = 8; info->pixmap.access_align = 32; info->pixmap.flags = FB_PIXMAP_SYSTEM; info->pixmap.scan_align = 1; fb->fbdev = info; par->intel_fb = intel_fb; /* To allow resizeing without swapping buffers */ DRM_DEBUG("allocated %dx%d fb: 0x%08x, bo %p\n", intel_fb->base.width, intel_fb->base.height, obj_priv->gtt_offset, fbo); mutex_unlock(&dev->struct_mutex); return 0; out_unpin: i915_gem_object_unpin(fbo); out_unref: drm_gem_object_unreference(fbo); mutex_unlock(&dev->struct_mutex); out: return ret; } int intelfb_probe(struct drm_device *dev) { int ret; DRM_DEBUG("\n"); ret = drm_fb_helper_single_fb_probe(dev, 32, intelfb_create); return ret; } EXPORT_SYMBOL(intelfb_probe); int intelfb_remove(struct drm_device *dev, struct drm_framebuffer *fb) { struct fb_info *info; if (!fb) return -EINVAL; info = fb->fbdev; if (info) { struct intelfb_par *par = info->par; unregister_framebuffer(info); iounmap(info->screen_base); if (info->par) drm_fb_helper_free(&par->helper); framebuffer_release(info); } return 0; } EXPORT_SYMBOL(intelfb_remove); MODULE_LICENSE("GPL and additional rights");