intel_fb.c revision 8be48d924c307e72e3797ab5bde81b07a1ccc52d
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/slab.h> 34#include <linux/sysrq.h> 35#include <linux/delay.h> 36#include <linux/fb.h> 37#include <linux/init.h> 38#include <linux/vga_switcheroo.h> 39 40#include "drmP.h" 41#include "drm.h" 42#include "drm_crtc.h" 43#include "drm_fb_helper.h" 44#include "intel_drv.h" 45#include "i915_drm.h" 46#include "i915_drv.h" 47 48struct intel_fbdev { 49 struct drm_fb_helper helper; 50 struct intel_framebuffer ifb; 51 struct list_head fbdev_list; 52 struct drm_display_mode *our_mode; 53}; 54 55static struct fb_ops intelfb_ops = { 56 .owner = THIS_MODULE, 57 .fb_check_var = drm_fb_helper_check_var, 58 .fb_set_par = drm_fb_helper_set_par, 59 .fb_setcolreg = drm_fb_helper_setcolreg, 60 .fb_fillrect = cfb_fillrect, 61 .fb_copyarea = cfb_copyarea, 62 .fb_imageblit = cfb_imageblit, 63 .fb_pan_display = drm_fb_helper_pan_display, 64 .fb_blank = drm_fb_helper_blank, 65 .fb_setcmap = drm_fb_helper_setcmap, 66}; 67 68static struct drm_fb_helper_funcs intel_fb_helper_funcs = { 69 .gamma_set = intel_crtc_fb_gamma_set, 70 .gamma_get = intel_crtc_fb_gamma_get, 71}; 72 73 74static int intelfb_create(struct intel_fbdev *ifbdev, 75 struct drm_fb_helper_surface_size *sizes) 76{ 77 struct drm_device *dev = ifbdev->helper.dev; 78 struct fb_info *info; 79 struct drm_framebuffer *fb; 80 struct drm_mode_fb_cmd mode_cmd; 81 struct drm_gem_object *fbo = NULL; 82 struct drm_i915_gem_object *obj_priv; 83 struct device *device = &dev->pdev->dev; 84 int size, ret, mmio_bar = IS_I9XX(dev) ? 0 : 1; 85 86 /* we don't do packed 24bpp */ 87 if (sizes->surface_bpp == 24) 88 sizes->surface_bpp = 32; 89 90 mode_cmd.width = sizes->surface_width; 91 mode_cmd.height = sizes->surface_height; 92 93 mode_cmd.bpp = sizes->surface_bpp; 94 mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64); 95 mode_cmd.depth = sizes->surface_depth; 96 97 size = mode_cmd.pitch * mode_cmd.height; 98 size = ALIGN(size, PAGE_SIZE); 99 fbo = drm_gem_object_alloc(dev, size); 100 if (!fbo) { 101 DRM_ERROR("failed to allocate framebuffer\n"); 102 ret = -ENOMEM; 103 goto out; 104 } 105 obj_priv = fbo->driver_private; 106 107 mutex_lock(&dev->struct_mutex); 108 109 ret = i915_gem_object_pin(fbo, 64*1024); 110 if (ret) { 111 DRM_ERROR("failed to pin fb: %d\n", ret); 112 goto out_unref; 113 } 114 115 /* Flush everything out, we'll be doing GTT only from now on */ 116 i915_gem_object_set_to_gtt_domain(fbo, 1); 117 118 info = framebuffer_alloc(0, device); 119 if (!info) { 120 ret = -ENOMEM; 121 goto out_unpin; 122 } 123 124 info->par = ifbdev; 125 126 intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, fbo); 127 128 fb = &ifbdev->ifb.base; 129 130 ifbdev->helper.fb = fb; 131 ifbdev->helper.fbdev = info; 132 ifbdev->helper.funcs = &intel_fb_helper_funcs; 133 134 strcpy(info->fix.id, "inteldrmfb"); 135 136 info->flags = FBINFO_DEFAULT; 137 info->fbops = &intelfb_ops; 138 139 /* setup aperture base/size for vesafb takeover */ 140 info->aperture_base = dev->mode_config.fb_base; 141 if (IS_I9XX(dev)) 142 info->aperture_size = pci_resource_len(dev->pdev, 2); 143 else 144 info->aperture_size = pci_resource_len(dev->pdev, 0); 145 146 info->fix.smem_start = dev->mode_config.fb_base + obj_priv->gtt_offset; 147 info->fix.smem_len = size; 148 149 info->flags = FBINFO_DEFAULT; 150 151 info->screen_base = ioremap_wc(dev->agp->base + obj_priv->gtt_offset, 152 size); 153 if (!info->screen_base) { 154 ret = -ENOSPC; 155 goto out_unpin; 156 } 157 info->screen_size = size; 158 159// memset(info->screen_base, 0, size); 160 161 drm_fb_helper_fill_fix(info, fb->pitch, fb->depth); 162 drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height); 163 164 /* FIXME: we really shouldn't expose mmio space at all */ 165 info->fix.mmio_start = pci_resource_start(dev->pdev, mmio_bar); 166 info->fix.mmio_len = pci_resource_len(dev->pdev, mmio_bar); 167 168 info->pixmap.size = 64*1024; 169 info->pixmap.buf_align = 8; 170 info->pixmap.access_align = 32; 171 info->pixmap.flags = FB_PIXMAP_SYSTEM; 172 info->pixmap.scan_align = 1; 173 174 DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x, bo %p\n", 175 fb->width, fb->height, 176 obj_priv->gtt_offset, fbo); 177 178 179 mutex_unlock(&dev->struct_mutex); 180 vga_switcheroo_client_fb_set(dev->pdev, info); 181 return 0; 182 183out_unpin: 184 i915_gem_object_unpin(fbo); 185out_unref: 186 drm_gem_object_unreference(fbo); 187 mutex_unlock(&dev->struct_mutex); 188out: 189 return ret; 190} 191 192static int intel_fb_find_or_create_single(struct drm_fb_helper *helper, 193 struct drm_fb_helper_surface_size *sizes) 194{ 195 struct intel_fbdev *ifbdev = (struct intel_fbdev *)helper; 196 int new_fb = 0; 197 int ret; 198 199 if (!helper->fb) { 200 ret = intelfb_create(ifbdev, sizes); 201 if (ret) 202 return ret; 203 new_fb = 1; 204 } 205 return new_fb; 206} 207 208static int intelfb_probe(struct intel_fbdev *ifbdev) 209{ 210 int ret; 211 212 DRM_DEBUG_KMS("\n"); 213 ret = drm_fb_helper_single_fb_probe(&ifbdev->helper, 32); 214 return ret; 215} 216 217int intel_fbdev_destroy(struct drm_device *dev, 218 struct intel_fbdev *ifbdev) 219{ 220 struct fb_info *info; 221 struct intel_framebuffer *ifb = &ifbdev->ifb; 222 223 if (ifbdev->helper.fbdev) { 224 info = ifbdev->helper.fbdev; 225 unregister_framebuffer(info); 226 iounmap(info->screen_base); 227 framebuffer_release(info); 228 } 229 230 drm_fb_helper_free(&ifbdev->helper); 231 232 drm_framebuffer_cleanup(&ifb->base); 233 if (ifb->obj) 234 drm_gem_object_unreference_unlocked(ifb->obj); 235 236 return 0; 237} 238 239int intel_fbdev_init(struct drm_device *dev) 240{ 241 struct intel_fbdev *ifbdev; 242 drm_i915_private_t *dev_priv = dev->dev_private; 243 244 ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL); 245 if (!ifbdev) 246 return -ENOMEM; 247 248 dev_priv->fbdev = ifbdev; 249 250 drm_fb_helper_init_crtc_count(dev, &ifbdev->helper, 2, 251 INTELFB_CONN_LIMIT); 252 ifbdev->helper.fb_probe = intel_fb_find_or_create_single; 253 drm_fb_helper_initial_config(&ifbdev->helper); 254 intelfb_probe(ifbdev); 255 return 0; 256} 257 258void intel_fbdev_fini(struct drm_device *dev) 259{ 260 drm_i915_private_t *dev_priv = dev->dev_private; 261 if (!dev_priv->fbdev) 262 return; 263 264 intel_fbdev_destroy(dev, dev_priv->fbdev); 265 kfree(dev_priv->fbdev); 266 dev_priv->fbdev = NULL; 267} 268MODULE_LICENSE("GPL and additional rights"); 269