intel_fb.c 7.5 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288
  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. #include <linux/module.h>
  27. #include <linux/kernel.h>
  28. #include <linux/errno.h>
  29. #include <linux/string.h>
  30. #include <linux/mm.h>
  31. #include <linux/tty.h>
  32. #include <linux/sysrq.h>
  33. #include <linux/delay.h>
  34. #include <linux/fb.h>
  35. #include <linux/init.h>
  36. #include <linux/vga_switcheroo.h>
  37. #include "drmP.h"
  38. #include "drm.h"
  39. #include "drm_crtc.h"
  40. #include "drm_fb_helper.h"
  41. #include "intel_drv.h"
  42. #include "i915_drm.h"
  43. #include "i915_drv.h"
  44. struct intel_fbdev {
  45. struct drm_fb_helper helper;
  46. struct intel_framebuffer ifb;
  47. struct list_head fbdev_list;
  48. struct drm_display_mode *our_mode;
  49. };
  50. static struct fb_ops intelfb_ops = {
  51. .owner = THIS_MODULE,
  52. .fb_check_var = drm_fb_helper_check_var,
  53. .fb_set_par = drm_fb_helper_set_par,
  54. .fb_fillrect = cfb_fillrect,
  55. .fb_copyarea = cfb_copyarea,
  56. .fb_imageblit = cfb_imageblit,
  57. .fb_pan_display = drm_fb_helper_pan_display,
  58. .fb_blank = drm_fb_helper_blank,
  59. .fb_setcmap = drm_fb_helper_setcmap,
  60. .fb_debug_enter = drm_fb_helper_debug_enter,
  61. .fb_debug_leave = drm_fb_helper_debug_leave,
  62. };
  63. static int intelfb_create(struct intel_fbdev *ifbdev,
  64. struct drm_fb_helper_surface_size *sizes)
  65. {
  66. struct drm_device *dev = ifbdev->helper.dev;
  67. struct fb_info *info;
  68. struct drm_framebuffer *fb;
  69. struct drm_mode_fb_cmd mode_cmd;
  70. struct drm_gem_object *fbo = NULL;
  71. struct drm_i915_gem_object *obj_priv;
  72. struct device *device = &dev->pdev->dev;
  73. int size, ret, mmio_bar = IS_I9XX(dev) ? 0 : 1;
  74. /* we don't do packed 24bpp */
  75. if (sizes->surface_bpp == 24)
  76. sizes->surface_bpp = 32;
  77. mode_cmd.width = sizes->surface_width;
  78. mode_cmd.height = sizes->surface_height;
  79. mode_cmd.bpp = sizes->surface_bpp;
  80. mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64);
  81. mode_cmd.depth = sizes->surface_depth;
  82. size = mode_cmd.pitch * mode_cmd.height;
  83. size = ALIGN(size, PAGE_SIZE);
  84. fbo = i915_gem_alloc_object(dev, size);
  85. if (!fbo) {
  86. DRM_ERROR("failed to allocate framebuffer\n");
  87. ret = -ENOMEM;
  88. goto out;
  89. }
  90. obj_priv = to_intel_bo(fbo);
  91. mutex_lock(&dev->struct_mutex);
  92. ret = intel_pin_and_fence_fb_obj(dev, fbo);
  93. if (ret) {
  94. DRM_ERROR("failed to pin fb: %d\n", ret);
  95. goto out_unref;
  96. }
  97. /* Flush everything out, we'll be doing GTT only from now on */
  98. ret = i915_gem_object_set_to_gtt_domain(fbo, 1);
  99. if (ret) {
  100. DRM_ERROR("failed to bind fb: %d.\n", ret);
  101. goto out_unpin;
  102. }
  103. info = framebuffer_alloc(0, device);
  104. if (!info) {
  105. ret = -ENOMEM;
  106. goto out_unpin;
  107. }
  108. info->par = ifbdev;
  109. ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, fbo);
  110. if (ret)
  111. goto out_unpin;
  112. fb = &ifbdev->ifb.base;
  113. ifbdev->helper.fb = fb;
  114. ifbdev->helper.fbdev = info;
  115. strcpy(info->fix.id, "inteldrmfb");
  116. info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT;
  117. info->fbops = &intelfb_ops;
  118. /* setup aperture base/size for vesafb takeover */
  119. info->apertures = alloc_apertures(1);
  120. if (!info->apertures) {
  121. ret = -ENOMEM;
  122. goto out_unpin;
  123. }
  124. info->apertures->ranges[0].base = dev->mode_config.fb_base;
  125. if (IS_I9XX(dev))
  126. info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 2);
  127. else
  128. info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 0);
  129. info->fix.smem_start = dev->mode_config.fb_base + obj_priv->gtt_offset;
  130. info->fix.smem_len = size;
  131. info->screen_base = ioremap_wc(dev->agp->base + obj_priv->gtt_offset,
  132. size);
  133. if (!info->screen_base) {
  134. ret = -ENOSPC;
  135. goto out_unpin;
  136. }
  137. ret = fb_alloc_cmap(&info->cmap, 256, 0);
  138. if (ret) {
  139. ret = -ENOMEM;
  140. goto out_unpin;
  141. }
  142. info->screen_size = size;
  143. // memset(info->screen_base, 0, size);
  144. drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
  145. drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
  146. /* FIXME: we really shouldn't expose mmio space at all */
  147. info->fix.mmio_start = pci_resource_start(dev->pdev, mmio_bar);
  148. info->fix.mmio_len = pci_resource_len(dev->pdev, mmio_bar);
  149. info->pixmap.size = 64*1024;
  150. info->pixmap.buf_align = 8;
  151. info->pixmap.access_align = 32;
  152. info->pixmap.flags = FB_PIXMAP_SYSTEM;
  153. info->pixmap.scan_align = 1;
  154. DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x, bo %p\n",
  155. fb->width, fb->height,
  156. obj_priv->gtt_offset, fbo);
  157. mutex_unlock(&dev->struct_mutex);
  158. vga_switcheroo_client_fb_set(dev->pdev, info);
  159. return 0;
  160. out_unpin:
  161. i915_gem_object_unpin(fbo);
  162. out_unref:
  163. drm_gem_object_unreference(fbo);
  164. mutex_unlock(&dev->struct_mutex);
  165. out:
  166. return ret;
  167. }
  168. static int intel_fb_find_or_create_single(struct drm_fb_helper *helper,
  169. struct drm_fb_helper_surface_size *sizes)
  170. {
  171. struct intel_fbdev *ifbdev = (struct intel_fbdev *)helper;
  172. int new_fb = 0;
  173. int ret;
  174. if (!helper->fb) {
  175. ret = intelfb_create(ifbdev, sizes);
  176. if (ret)
  177. return ret;
  178. new_fb = 1;
  179. }
  180. return new_fb;
  181. }
  182. static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
  183. .gamma_set = intel_crtc_fb_gamma_set,
  184. .gamma_get = intel_crtc_fb_gamma_get,
  185. .fb_probe = intel_fb_find_or_create_single,
  186. };
  187. int intel_fbdev_destroy(struct drm_device *dev,
  188. struct intel_fbdev *ifbdev)
  189. {
  190. struct fb_info *info;
  191. struct intel_framebuffer *ifb = &ifbdev->ifb;
  192. if (ifbdev->helper.fbdev) {
  193. info = ifbdev->helper.fbdev;
  194. unregister_framebuffer(info);
  195. iounmap(info->screen_base);
  196. if (info->cmap.len)
  197. fb_dealloc_cmap(&info->cmap);
  198. framebuffer_release(info);
  199. }
  200. drm_fb_helper_fini(&ifbdev->helper);
  201. drm_framebuffer_cleanup(&ifb->base);
  202. if (ifb->obj)
  203. drm_gem_object_unreference(ifb->obj);
  204. return 0;
  205. }
  206. int intel_fbdev_init(struct drm_device *dev)
  207. {
  208. struct intel_fbdev *ifbdev;
  209. drm_i915_private_t *dev_priv = dev->dev_private;
  210. int ret;
  211. ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL);
  212. if (!ifbdev)
  213. return -ENOMEM;
  214. dev_priv->fbdev = ifbdev;
  215. ifbdev->helper.funcs = &intel_fb_helper_funcs;
  216. ret = drm_fb_helper_init(dev, &ifbdev->helper,
  217. dev_priv->num_pipe,
  218. INTELFB_CONN_LIMIT);
  219. if (ret) {
  220. kfree(ifbdev);
  221. return ret;
  222. }
  223. drm_fb_helper_single_add_all_connectors(&ifbdev->helper);
  224. drm_fb_helper_initial_config(&ifbdev->helper, 32);
  225. return 0;
  226. }
  227. void intel_fbdev_fini(struct drm_device *dev)
  228. {
  229. drm_i915_private_t *dev_priv = dev->dev_private;
  230. if (!dev_priv->fbdev)
  231. return;
  232. intel_fbdev_destroy(dev, dev_priv->fbdev);
  233. kfree(dev_priv->fbdev);
  234. dev_priv->fbdev = NULL;
  235. }
  236. MODULE_LICENSE("GPL and additional rights");
  237. void intel_fb_output_poll_changed(struct drm_device *dev)
  238. {
  239. drm_i915_private_t *dev_priv = dev->dev_private;
  240. drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper);
  241. }