| 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 | |
| 47 | struct 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 | |
| 54 | static 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 | .fb_debug_enter = drm_fb_helper_debug_enter, |
| 65 | .fb_debug_leave = drm_fb_helper_debug_leave, |
| 66 | }; |
| 67 | |
| 68 | static int intelfb_create(struct intel_fbdev *ifbdev, |
| 69 | struct drm_fb_helper_surface_size *sizes) |
| 70 | { |
| 71 | struct drm_device *dev = ifbdev->helper.dev; |
| 72 | struct fb_info *info; |
| 73 | struct drm_framebuffer *fb; |
| 74 | struct drm_mode_fb_cmd mode_cmd; |
| 75 | struct drm_gem_object *fbo = NULL; |
| 76 | struct drm_i915_gem_object *obj_priv; |
| 77 | struct device *device = &dev->pdev->dev; |
| 78 | int size, ret, mmio_bar = IS_I9XX(dev) ? 0 : 1; |
| 79 | |
| 80 | /* we don't do packed 24bpp */ |
| 81 | if (sizes->surface_bpp == 24) |
| 82 | sizes->surface_bpp = 32; |
| 83 | |
| 84 | mode_cmd.width = sizes->surface_width; |
| 85 | mode_cmd.height = sizes->surface_height; |
| 86 | |
| 87 | mode_cmd.bpp = sizes->surface_bpp; |
| 88 | mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64); |
| 89 | mode_cmd.depth = sizes->surface_depth; |
| 90 | |
| 91 | size = mode_cmd.pitch * mode_cmd.height; |
| 92 | size = ALIGN(size, PAGE_SIZE); |
| 93 | fbo = i915_gem_alloc_object(dev, size); |
| 94 | if (!fbo) { |
| 95 | DRM_ERROR("failed to allocate framebuffer\n"); |
| 96 | ret = -ENOMEM; |
| 97 | goto out; |
| 98 | } |
| 99 | obj_priv = to_intel_bo(fbo); |
| 100 | |
| 101 | mutex_lock(&dev->struct_mutex); |
| 102 | |
| 103 | ret = intel_pin_and_fence_fb_obj(dev, fbo); |
| 104 | if (ret) { |
| 105 | DRM_ERROR("failed to pin fb: %d\n", ret); |
| 106 | goto out_unref; |
| 107 | } |
| 108 | |
| 109 | /* Flush everything out, we'll be doing GTT only from now on */ |
| 110 | ret = i915_gem_object_set_to_gtt_domain(fbo, 1); |
| 111 | if (ret) { |
| 112 | DRM_ERROR("failed to bind fb: %d.\n", ret); |
| 113 | goto out_unpin; |
| 114 | } |
| 115 | |
| 116 | info = framebuffer_alloc(0, device); |
| 117 | if (!info) { |
| 118 | ret = -ENOMEM; |
| 119 | goto out_unpin; |
| 120 | } |
| 121 | |
| 122 | info->par = ifbdev; |
| 123 | |
| 124 | ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, fbo); |
| 125 | if (ret) |
| 126 | goto out_unpin; |
| 127 | |
| 128 | fb = &ifbdev->ifb.base; |
| 129 | |
| 130 | ifbdev->helper.fb = fb; |
| 131 | ifbdev->helper.fbdev = info; |
| 132 | |
| 133 | strcpy(info->fix.id, "inteldrmfb"); |
| 134 | |
| 135 | info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; |
| 136 | info->fbops = &intelfb_ops; |
| 137 | |
| 138 | /* setup aperture base/size for vesafb takeover */ |
| 139 | info->apertures = alloc_apertures(1); |
| 140 | if (!info->apertures) { |
| 141 | ret = -ENOMEM; |
| 142 | goto out_unpin; |
| 143 | } |
| 144 | info->apertures->ranges[0].base = dev->mode_config.fb_base; |
| 145 | if (IS_I9XX(dev)) |
| 146 | info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 2); |
| 147 | else |
| 148 | info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 0); |
| 149 | |
| 150 | info->fix.smem_start = dev->mode_config.fb_base + obj_priv->gtt_offset; |
| 151 | info->fix.smem_len = size; |
| 152 | |
| 153 | info->screen_base = ioremap_wc(dev->agp->base + obj_priv->gtt_offset, |
| 154 | size); |
| 155 | if (!info->screen_base) { |
| 156 | ret = -ENOSPC; |
| 157 | goto out_unpin; |
| 158 | } |
| 159 | |
| 160 | ret = fb_alloc_cmap(&info->cmap, 256, 0); |
| 161 | if (ret) { |
| 162 | ret = -ENOMEM; |
| 163 | goto out_unpin; |
| 164 | } |
| 165 | info->screen_size = size; |
| 166 | |
| 167 | // memset(info->screen_base, 0, size); |
| 168 | |
| 169 | drm_fb_helper_fill_fix(info, fb->pitch, fb->depth); |
| 170 | drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height); |
| 171 | |
| 172 | /* FIXME: we really shouldn't expose mmio space at all */ |
| 173 | info->fix.mmio_start = pci_resource_start(dev->pdev, mmio_bar); |
| 174 | info->fix.mmio_len = pci_resource_len(dev->pdev, mmio_bar); |
| 175 | |
| 176 | info->pixmap.size = 64*1024; |
| 177 | info->pixmap.buf_align = 8; |
| 178 | info->pixmap.access_align = 32; |
| 179 | info->pixmap.flags = FB_PIXMAP_SYSTEM; |
| 180 | info->pixmap.scan_align = 1; |
| 181 | |
| 182 | DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x, bo %p\n", |
| 183 | fb->width, fb->height, |
| 184 | obj_priv->gtt_offset, fbo); |
| 185 | |
| 186 | |
| 187 | mutex_unlock(&dev->struct_mutex); |
| 188 | vga_switcheroo_client_fb_set(dev->pdev, info); |
| 189 | return 0; |
| 190 | |
| 191 | out_unpin: |
| 192 | i915_gem_object_unpin(fbo); |
| 193 | out_unref: |
| 194 | drm_gem_object_unreference(fbo); |
| 195 | mutex_unlock(&dev->struct_mutex); |
| 196 | out: |
| 197 | return ret; |
| 198 | } |
| 199 | |
| 200 | static int intel_fb_find_or_create_single(struct drm_fb_helper *helper, |
| 201 | struct drm_fb_helper_surface_size *sizes) |
| 202 | { |
| 203 | struct intel_fbdev *ifbdev = (struct intel_fbdev *)helper; |
| 204 | int new_fb = 0; |
| 205 | int ret; |
| 206 | |
| 207 | if (!helper->fb) { |
| 208 | ret = intelfb_create(ifbdev, sizes); |
| 209 | if (ret) |
| 210 | return ret; |
| 211 | new_fb = 1; |
| 212 | } |
| 213 | return new_fb; |
| 214 | } |
| 215 | |
| 216 | static 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 | |
| 222 | int 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_handle_unreference(ifb->obj); |
| 242 | drm_gem_object_unreference(ifb->obj); |
| 243 | } |
| 244 | |
| 245 | return 0; |
| 246 | } |
| 247 | |
| 248 | int intel_fbdev_init(struct drm_device *dev) |
| 249 | { |
| 250 | struct intel_fbdev *ifbdev; |
| 251 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 252 | int ret; |
| 253 | |
| 254 | ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL); |
| 255 | if (!ifbdev) |
| 256 | return -ENOMEM; |
| 257 | |
| 258 | dev_priv->fbdev = ifbdev; |
| 259 | ifbdev->helper.funcs = &intel_fb_helper_funcs; |
| 260 | |
| 261 | ret = drm_fb_helper_init(dev, &ifbdev->helper, |
| 262 | dev_priv->num_pipe, |
| 263 | INTELFB_CONN_LIMIT); |
| 264 | if (ret) { |
| 265 | kfree(ifbdev); |
| 266 | return ret; |
| 267 | } |
| 268 | |
| 269 | drm_fb_helper_single_add_all_connectors(&ifbdev->helper); |
| 270 | drm_fb_helper_initial_config(&ifbdev->helper, 32); |
| 271 | return 0; |
| 272 | } |
| 273 | |
| 274 | void intel_fbdev_fini(struct drm_device *dev) |
| 275 | { |
| 276 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 277 | if (!dev_priv->fbdev) |
| 278 | return; |
| 279 | |
| 280 | intel_fbdev_destroy(dev, dev_priv->fbdev); |
| 281 | kfree(dev_priv->fbdev); |
| 282 | dev_priv->fbdev = NULL; |
| 283 | } |
| 284 | MODULE_LICENSE("GPL and additional rights"); |
| 285 | |
| 286 | void intel_fb_output_poll_changed(struct drm_device *dev) |
| 287 | { |
| 288 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 289 | drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper); |
| 290 | } |