sys/dev/drm2/i915/intel_fb.c

   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 <sys/cdefs.h>
  28 __FBSDID("$FreeBSD$");
  29
  30 #include <dev/drm2/drmP.h>
  31 #include <dev/drm2/drm.h>
  32 #include <dev/drm2/drm_crtc.h>
  33 #include <dev/drm2/drm_fb_helper.h>
  34 #include <dev/drm2/i915/i915_drm.h>
  35 #include <dev/drm2/i915/i915_drv.h>
  36 #include <dev/drm2/i915/intel_drv.h>
  37
  38 static int intelfb_create(struct intel_fbdev *ifbdev,
  39                           struct drm_fb_helper_surface_size *sizes)
  40 {
  41         struct drm_device *dev = ifbdev->helper.dev;
  42 #if 0
  43         struct drm_i915_private *dev_priv = dev->dev_private;
  44 #endif
  45         struct fb_info *info;
  46         struct drm_framebuffer *fb;
  47         struct drm_mode_fb_cmd2 mode_cmd;
  48         struct drm_i915_gem_object *obj;
  49         int size, ret;
  50
  51         /* we don't do packed 24bpp */
  52         if (sizes->surface_bpp == 24)
  53                 sizes->surface_bpp = 32;
  54
  55         mode_cmd.width = sizes->surface_width;
  56         mode_cmd.height = sizes->surface_height;
  57
  58         mode_cmd.pitches[0] = roundup2(mode_cmd.width * ((sizes->surface_bpp + 7) /
  59                                                          8), 64);
  60         mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
  61                                                           sizes->surface_depth);
  62
  63         size = mode_cmd.pitches[0] * mode_cmd.height;
  64         size = roundup2(size, PAGE_SIZE);
  65         obj = i915_gem_alloc_object(dev, size);
  66         if (!obj) {
  67                 DRM_ERROR("failed to allocate framebuffer\n");
  68                 ret = -ENOMEM;
  69                 goto out;
  70         }
  71
  72         DRM_LOCK(dev);
  73
  74         /* Flush everything out, we'll be doing GTT only from now on */
  75         ret = intel_pin_and_fence_fb_obj(dev, obj, false);
  76         if (ret) {
  77                 DRM_ERROR("failed to pin fb: %d\n", ret);
  78                 goto out_unref;
  79         }
  80
  81 #if 0
  82         info = framebuffer_alloc(0, device);
  83         if (!info) {
  84                 ret = -ENOMEM;
  85                 goto out_unpin;
  86         }
  87
  88         info->par = ifbdev;
  89 #else
  90         info = malloc(sizeof(struct fb_info), DRM_MEM_KMS, M_WAITOK | M_ZERO);
  91         info->fb_size = size;
  92         info->fb_bpp = sizes->surface_bpp;
  93         info->fb_width = sizes->fb_width;
  94         info->fb_height = sizes->fb_height;
  95         info->fb_pbase = dev->agp->base + obj->gtt_offset;
  96         info->fb_vbase = (vm_offset_t)pmap_mapdev_attr(info->fb_pbase, size,
  97             PAT_WRITE_COMBINING);
  98
  99 #endif
 100
 101         ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, obj);
 102         if (ret)
 103                 goto out_unpin;
 104
 105         fb = &ifbdev->ifb.base;
 106
 107         ifbdev->helper.fb = fb;
 108         ifbdev->helper.fbdev = info;
 109 #if 0
 110
 111         strcpy(info->fix.id, "inteldrmfb");
 112
 113         info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT;
 114         info->fbops = &intelfb_ops;
 115
 116         ret = fb_alloc_cmap(&info->cmap, 256, 0);
 117         if (ret) {
 118                 ret = -ENOMEM;
 119                 goto out_unpin;
 120         }
 121         /* setup aperture base/size for vesafb takeover */
 122         info->apertures = alloc_apertures(1);
 123         if (!info->apertures) {
 124                 ret = -ENOMEM;
 125                 goto out_unpin;
 126         }
 127         info->apertures->ranges[0].base = dev->mode_config.fb_base;
 128         info->apertures->ranges[0].size =
 129                 dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT;
 130
 131         info->fix.smem_start = dev->mode_config.fb_base + obj->gtt_offset;
 132         info->fix.smem_len = size;
 133
 134         info->screen_base = ioremap_wc(dev->agp->base + obj->gtt_offset, size);
 135         if (!info->screen_base) {
 136                 ret = -ENOSPC;
 137                 goto out_unpin;
 138         }
 139         info->screen_size = size;
 140
 141 //      memset(info->screen_base, 0, size);
 142
 143         drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
 144         drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
 145
 146         /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
 147 #endif
 148         DRM_DEBUG_KMS("allocated %dx%d (s %dbits) fb: 0x%08x, bo %p\n",
 149                       fb->width, fb->height, fb->depth,
 150                       obj->gtt_offset, obj);
 151
 152         DRM_UNLOCK(dev);
 153 #if 1
 154         KIB_NOTYET();
 155 #else
 156         vga_switcheroo_client_fb_set(dev->pdev, info);
 157 #endif
 158         return 0;
 159
 160 out_unpin:
 161         i915_gem_object_unpin(obj);
 162 out_unref:
 163         drm_gem_object_unreference(&obj->base);
 164         DRM_UNLOCK(dev);
 165 out:
 166         return ret;
 167 }
 168
 169 static int intel_fb_find_or_create_single(struct drm_fb_helper *helper,
 170                                           struct drm_fb_helper_surface_size *sizes)
 171 {
 172         struct intel_fbdev *ifbdev = (struct intel_fbdev *)helper;
 173         int new_fb = 0;
 174         int ret;
 175
 176         if (!helper->fb) {
 177                 ret = intelfb_create(ifbdev, sizes);
 178                 if (ret)
 179                         return ret;
 180                 new_fb = 1;
 181         }
 182         return new_fb;
 183 }
 184
 185 static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
 186         .gamma_set = intel_crtc_fb_gamma_set,
 187         .gamma_get = intel_crtc_fb_gamma_get,
 188         .fb_probe = intel_fb_find_or_create_single,
 189 };
 190
 191 static void intel_fbdev_destroy(struct drm_device *dev,
 192                                 struct intel_fbdev *ifbdev)
 193 {
 194 #if 0
 195         struct fb_info *info;
 196 #endif
 197         struct intel_framebuffer *ifb = &ifbdev->ifb;
 198
 199 #if 0
 200         if (ifbdev->helper.fbdev) {
 201                 info = ifbdev->helper.fbdev;
 202                 unregister_framebuffer(info);
 203                 iounmap(info->screen_base);
 204                 if (info->cmap.len)
 205                         fb_dealloc_cmap(&info->cmap);
 206                 framebuffer_release(info);
 207         }
 208 #endif
 209
 210         drm_fb_helper_fini(&ifbdev->helper);
 211
 212         drm_framebuffer_cleanup(&ifb->base);
 213         if (ifb->obj) {
 214                 drm_gem_object_unreference_unlocked(&ifb->obj->base);
 215                 ifb->obj = NULL;
 216         }
 217 }
 218
 219 extern int sc_txtmouse_no_retrace_wait;
 220
 221 int intel_fbdev_init(struct drm_device *dev)
 222 {
 223         struct intel_fbdev *ifbdev;
 224         drm_i915_private_t *dev_priv = dev->dev_private;
 225         int ret;
 226
 227         ifbdev = malloc(sizeof(struct intel_fbdev), DRM_MEM_KMS,
 228             M_WAITOK | M_ZERO);
 229
 230         dev_priv->fbdev = ifbdev;
 231         ifbdev->helper.funcs = &intel_fb_helper_funcs;
 232
 233         ret = drm_fb_helper_init(dev, &ifbdev->helper,
 234                                  dev_priv->num_pipe,
 235                                  INTELFB_CONN_LIMIT);
 236         if (ret) {
 237                 free(ifbdev, DRM_MEM_KMS);
 238                 return ret;
 239         }
 240
 241         drm_fb_helper_single_add_all_connectors(&ifbdev->helper);
 242         drm_fb_helper_initial_config(&ifbdev->helper, 32);
 243         sc_txtmouse_no_retrace_wait = 1;
 244         return 0;
 245 }
 246
 247 void intel_fbdev_fini(struct drm_device *dev)
 248 {
 249         drm_i915_private_t *dev_priv = dev->dev_private;
 250         if (!dev_priv->fbdev)
 251                 return;
 252
 253         intel_fbdev_destroy(dev, dev_priv->fbdev);
 254         free(dev_priv->fbdev, DRM_MEM_KMS);
 255         dev_priv->fbdev = NULL;
 256 }
 257
 258 void intel_fb_output_poll_changed(struct drm_device *dev)
 259 {
 260         drm_i915_private_t *dev_priv = dev->dev_private;
 261         drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper);
 262 }
 263
 264 void intel_fb_restore_mode(struct drm_device *dev)
 265 {
 266         int ret;
 267         drm_i915_private_t *dev_priv = dev->dev_private;
 268         struct drm_mode_config *config = &dev->mode_config;
 269         struct drm_plane *plane;
 270
 271         sx_xlock(&dev->mode_config.mutex);
 272
 273         ret = drm_fb_helper_restore_fbdev_mode(&dev_priv->fbdev->helper);
 274         if (ret)
 275                 DRM_DEBUG("failed to restore crtc mode\n");
 276
 277         /* Be sure to shut off any planes that may be active */
 278         list_for_each_entry(plane, &config->plane_list, head)
 279                 plane->funcs->disable_plane(plane);
 280
 281         sx_xunlock(&dev->mode_config.mutex);
 282 }