intel_fb.c revision 1471ca9aa71cd37b6a7476bb6f06a3a8622ea1bd
1/* 2 * Copyright © 2007 David Airlie 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 21 * DEALINGS IN THE SOFTWARE. 22 * 23 * Authors: 24 * David Airlie 25 */ 26 27#include <linux/module.h> 28#include <linux/kernel.h> 29#include <linux/errno.h> 30#include <linux/string.h> 31#include <linux/mm.h> 32#include <linux/tty.h> 33#include <linux/sysrq.h> 34#include <linux/delay.h> 35#include <linux/fb.h> 36#include <linux/init.h> 37#include <linux/vga_switcheroo.h> 38 39#include "drmP.h" 40#include "drm.h" 41#include "drm_crtc.h" 42#include "drm_fb_helper.h" 43#include "intel_drv.h" 44#include "i915_drm.h" 45#include "i915_drv.h" 46 47struct intel_fbdev { 48 struct drm_fb_helper helper; 49 struct intel_framebuffer ifb; 50 struct list_head fbdev_list; 51 struct drm_display_mode *our_mode; 52}; 53 54static struct fb_ops intelfb_ops = { 55 .owner = THIS_MODULE, 56 .fb_check_var = drm_fb_helper_check_var, 57 .fb_set_par = drm_fb_helper_set_par, 58 .fb_fillrect = cfb_fillrect, 59 .fb_copyarea = cfb_copyarea, 60 .fb_imageblit = cfb_imageblit, 61 .fb_pan_display = drm_fb_helper_pan_display, 62 .fb_blank = drm_fb_helper_blank, 63 .fb_setcmap = drm_fb_helper_setcmap, 64}; 65 66static int intelfb_create(struct intel_fbdev *ifbdev, 67 struct drm_fb_helper_surface_size *sizes) 68{ 69 struct drm_device *dev = ifbdev->helper.dev; 70 struct fb_info *info; 71 struct drm_framebuffer *fb; 72 struct drm_mode_fb_cmd mode_cmd; 73 struct drm_gem_object *fbo = NULL; 74 struct drm_i915_gem_object *obj_priv; 75 struct device *device = &dev->pdev->dev; 76 int size, ret, mmio_bar = IS_I9XX(dev) ? 0 : 1; 77 78 /* we don't do packed 24bpp */ 79 if (sizes->surface_bpp == 24) 80 sizes->surface_bpp = 32; 81 82 mode_cmd.width = sizes->surface_width; 83 mode_cmd.height = sizes->surface_height; 84 85 mode_cmd.bpp = sizes->surface_bpp; 86 mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64); 87 mode_cmd.depth = sizes->surface_depth; 88 89 size = mode_cmd.pitch * mode_cmd.height; 90 size = ALIGN(size, PAGE_SIZE); 91 fbo = i915_gem_alloc_object(dev, size); 92 if (!fbo) { 93 DRM_ERROR("failed to allocate framebuffer\n"); 94 ret = -ENOMEM; 95 goto out; 96 } 97 obj_priv = to_intel_bo(fbo); 98 99 mutex_lock(&dev->struct_mutex); 100 101 ret = i915_gem_object_pin(fbo, 64*1024); 102 if (ret) { 103 DRM_ERROR("failed to pin fb: %d\n", ret); 104 goto out_unref; 105 } 106 107 /* Flush everything out, we'll be doing GTT only from now on */ 108 i915_gem_object_set_to_gtt_domain(fbo, 1); 109 110 info = framebuffer_alloc(0, device); 111 if (!info) { 112 ret = -ENOMEM; 113 goto out_unpin; 114 } 115 116 info->par = ifbdev; 117 118 intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, fbo); 119 120 fb = &ifbdev->ifb.base; 121 122 ifbdev->helper.fb = fb; 123 ifbdev->helper.fbdev = info; 124 125 strcpy(info->fix.id, "inteldrmfb"); 126 127 info->flags = FBINFO_DEFAULT; 128 info->fbops = &intelfb_ops; 129 130 /* setup aperture base/size for vesafb takeover */ 131 info->apertures = alloc_apertures(1); 132 if (!info->apertures) { 133 ret = -ENOMEM; 134 goto out_unpin; 135 } 136 info->apertures->ranges[0].base = dev->mode_config.fb_base; 137 if (IS_I9XX(dev)) 138 info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 2); 139 else 140 info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 0); 141 142 info->fix.smem_start = dev->mode_config.fb_base + obj_priv->gtt_offset; 143 info->fix.smem_len = size; 144 145 info->flags = FBINFO_DEFAULT; 146 147 info->screen_base = ioremap_wc(dev->agp->base + obj_priv->gtt_offset, 148 size); 149 if (!info->screen_base) { 150 ret = -ENOSPC; 151 goto out_unpin; 152 } 153 154 ret = fb_alloc_cmap(&info->cmap, 256, 0); 155 if (ret) { 156 ret = -ENOMEM; 157 goto out_unpin; 158 } 159 info->screen_size = size; 160 161// memset(info->screen_base, 0, size); 162 163 drm_fb_helper_fill_fix(info, fb->pitch, fb->depth); 164 drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height); 165 166 /* FIXME: we really shouldn't expose mmio space at all */ 167 info->fix.mmio_start = pci_resource_start(dev->pdev, mmio_bar); 168 info->fix.mmio_len = pci_resource_len(dev->pdev, mmio_bar); 169 170 info->pixmap.size = 64*1024; 171 info->pixmap.buf_align = 8; 172 info->pixmap.access_align = 32; 173 info->pixmap.flags = FB_PIXMAP_SYSTEM; 174 info->pixmap.scan_align = 1; 175 176 DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x, bo %p\n", 177 fb->width, fb->height, 178 obj_priv->gtt_offset, fbo); 179 180 181 mutex_unlock(&dev->struct_mutex); 182 vga_switcheroo_client_fb_set(dev->pdev, info); 183 return 0; 184 185out_unpin: 186 i915_gem_object_unpin(fbo); 187out_unref: 188 drm_gem_object_unreference(fbo); 189 mutex_unlock(&dev->struct_mutex); 190out: 191 return ret; 192} 193 194static int intel_fb_find_or_create_single(struct drm_fb_helper *helper, 195 struct drm_fb_helper_surface_size *sizes) 196{ 197 struct intel_fbdev *ifbdev = (struct intel_fbdev *)helper; 198 int new_fb = 0; 199 int ret; 200 201 if (!helper->fb) { 202 ret = intelfb_create(ifbdev, sizes); 203 if (ret) 204 return ret; 205 new_fb = 1; 206 } 207 return new_fb; 208} 209 210void intelfb_hotplug(struct drm_device *dev, bool polled) 211{ 212 drm_i915_private_t *dev_priv = dev->dev_private; 213 drm_helper_fb_hpd_irq_event(&dev_priv->fbdev->helper); 214} 215 216static struct drm_fb_helper_funcs intel_fb_helper_funcs = { 217 .gamma_set = intel_crtc_fb_gamma_set, 218 .gamma_get = intel_crtc_fb_gamma_get, 219 .fb_probe = intel_fb_find_or_create_single, 220}; 221 222int intel_fbdev_destroy(struct drm_device *dev, 223 struct intel_fbdev *ifbdev) 224{ 225 struct fb_info *info; 226 struct intel_framebuffer *ifb = &ifbdev->ifb; 227 228 if (ifbdev->helper.fbdev) { 229 info = ifbdev->helper.fbdev; 230 unregister_framebuffer(info); 231 iounmap(info->screen_base); 232 if (info->cmap.len) 233 fb_dealloc_cmap(&info->cmap); 234 framebuffer_release(info); 235 } 236 237 drm_fb_helper_fini(&ifbdev->helper); 238 239 drm_framebuffer_cleanup(&ifb->base); 240 if (ifb->obj) 241 drm_gem_object_unreference_unlocked(ifb->obj); 242 243 return 0; 244} 245 246int intel_fbdev_init(struct drm_device *dev) 247{ 248 struct intel_fbdev *ifbdev; 249 drm_i915_private_t *dev_priv = dev->dev_private; 250 251 ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL); 252 if (!ifbdev) 253 return -ENOMEM; 254 255 dev_priv->fbdev = ifbdev; 256 ifbdev->helper.funcs = &intel_fb_helper_funcs; 257 258 drm_fb_helper_init(dev, &ifbdev->helper, 2, 259 INTELFB_CONN_LIMIT, false); 260 261 drm_fb_helper_single_add_all_connectors(&ifbdev->helper); 262 drm_fb_helper_initial_config(&ifbdev->helper, 32); 263 return 0; 264} 265 266void intel_fbdev_fini(struct drm_device *dev) 267{ 268 drm_i915_private_t *dev_priv = dev->dev_private; 269 if (!dev_priv->fbdev) 270 return; 271 272 intel_fbdev_destroy(dev, dev_priv->fbdev); 273 kfree(dev_priv->fbdev); 274 dev_priv->fbdev = NULL; 275} 276MODULE_LICENSE("GPL and additional rights"); 277