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: src/sys/dev/drm2/i915/intel_fb.c,v 1.1 2012/05/22 11:07:44 kib Exp $");
  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         struct fb_info *info;
  45 #endif
  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 #endif
  90
  91         ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, obj);
  92         if (ret)
  93                 goto out_unpin;
  94
  95         fb = &ifbdev->ifb.base;
  96
  97         ifbdev->helper.fb = fb;
  98 #if 0
  99         ifbdev->helper.fbdev = info;
 100
 101         strcpy(info->fix.id, "inteldrmfb");
 102
 103         info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT;
 104         info->fbops = &intelfb_ops;
 105
 106         ret = fb_alloc_cmap(&info->cmap, 256, 0);
 107         if (ret) {
 108                 ret = -ENOMEM;
 109                 goto out_unpin;
 110         }
 111         /* setup aperture base/size for vesafb takeover */
 112         info->apertures = alloc_apertures(1);
 113         if (!info->apertures) {
 114                 ret = -ENOMEM;
 115                 goto out_unpin;
 116         }
 117         info->apertures->ranges[0].base = dev->mode_config.fb_base;
 118         info->apertures->ranges[0].size =
 119                 dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT;
 120
 121         info->fix.smem_start = dev->mode_config.fb_base + obj->gtt_offset;
 122         info->fix.smem_len = size;
 123
 124         info->screen_base = ioremap_wc(dev->agp->base + obj->gtt_offset, size);
 125         if (!info->screen_base) {
 126                 ret = -ENOSPC;
 127                 goto out_unpin;
 128         }
 129         info->screen_size = size;
 130
 131 //      memset(info->screen_base, 0, size);
 132
 133         drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
 134         drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
 135
 136         /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
 137 #endif
 138
 139         DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x, bo %p\n",
 140                       fb->width, fb->height,
 141                       obj->gtt_offset, obj);
 142
 143         DRM_UNLOCK(dev);
 144 #if 1
 145         KIB_NOTYET();
 146 #else
 147         vga_switcheroo_client_fb_set(dev->pdev, info);
 148 #endif
 149         return 0;
 150
 151 out_unpin:
 152         i915_gem_object_unpin(obj);
 153 out_unref:
 154         drm_gem_object_unreference(&obj->base);
 155         DRM_UNLOCK(dev);
 156 out:
 157         return ret;
 158 }
 159
 160 static int intel_fb_find_or_create_single(struct drm_fb_helper *helper,
 161                                           struct drm_fb_helper_surface_size *sizes)
 162 {
 163         struct intel_fbdev *ifbdev = (struct intel_fbdev *)helper;
 164         int new_fb = 0;
 165         int ret;
 166
 167         if (!helper->fb) {
 168                 ret = intelfb_create(ifbdev, sizes);
 169                 if (ret)
 170                         return ret;
 171                 new_fb = 1;
 172         }
 173         return new_fb;
 174 }
 175
 176 static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
 177         .gamma_set = intel_crtc_fb_gamma_set,
 178         .gamma_get = intel_crtc_fb_gamma_get,
 179         .fb_probe = intel_fb_find_or_create_single,
 180 };
 181
 182 static void intel_fbdev_destroy(struct drm_device *dev,
 183                                 struct intel_fbdev *ifbdev)
 184 {
 185 #if 0
 186         struct fb_info *info;
 187 #endif
 188         struct intel_framebuffer *ifb = &ifbdev->ifb;
 189
 190 #if 0
 191         if (ifbdev->helper.fbdev) {
 192                 info = ifbdev->helper.fbdev;
 193                 unregister_framebuffer(info);
 194                 iounmap(info->screen_base);
 195                 if (info->cmap.len)
 196                         fb_dealloc_cmap(&info->cmap);
 197                 framebuffer_release(info);
 198         }
 199 #endif
 200
 201         drm_fb_helper_fini(&ifbdev->helper);
 202
 203         drm_framebuffer_cleanup(&ifb->base);
 204         if (ifb->obj) {
 205                 drm_gem_object_unreference_unlocked(&ifb->obj->base);
 206                 ifb->obj = NULL;
 207         }
 208 }
 209
 210 int intel_fbdev_init(struct drm_device *dev)
 211 {
 212         struct intel_fbdev *ifbdev;
 213         drm_i915_private_t *dev_priv = dev->dev_private;
 214         int ret;
 215
 216         ifbdev = malloc(sizeof(struct intel_fbdev), DRM_MEM_KMS,
 217             M_WAITOK | M_ZERO);
 218
 219         dev_priv->fbdev = ifbdev;
 220         ifbdev->helper.funcs = &intel_fb_helper_funcs;
 221
 222         ret = drm_fb_helper_init(dev, &ifbdev->helper,
 223                                  dev_priv->num_pipe,
 224                                  INTELFB_CONN_LIMIT);
 225         if (ret) {
 226                 free(ifbdev, DRM_MEM_KMS);
 227                 return ret;
 228         }
 229
 230         drm_fb_helper_single_add_all_connectors(&ifbdev->helper);
 231         drm_fb_helper_initial_config(&ifbdev->helper, 32);
 232         return 0;
 233 }
 234
 235 void intel_fbdev_fini(struct drm_device *dev)
 236 {
 237         drm_i915_private_t *dev_priv = dev->dev_private;
 238         if (!dev_priv->fbdev)
 239                 return;
 240
 241         intel_fbdev_destroy(dev, dev_priv->fbdev);
 242         free(dev_priv->fbdev, DRM_MEM_KMS);
 243         dev_priv->fbdev = NULL;
 244 }
 245
 246 void intel_fb_output_poll_changed(struct drm_device *dev)
 247 {
 248         drm_i915_private_t *dev_priv = dev->dev_private;
 249         drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper);
 250 }
 251
 252 void intel_fb_restore_mode(struct drm_device *dev)
 253 {
 254         int ret;
 255         drm_i915_private_t *dev_priv = dev->dev_private;
 256         struct drm_mode_config *config = &dev->mode_config;
 257         struct drm_plane *plane;
 258
 259         sx_xlock(&dev->mode_config.mutex);
 260
 261         ret = drm_fb_helper_restore_fbdev_mode(&dev_priv->fbdev->helper);
 262         if (ret)
 263                 DRM_DEBUG("failed to restore crtc mode\n");
 264
 265         /* Be sure to shut off any planes that may be active */
 266         list_for_each_entry(plane, &config->plane_list, head)
 267                 plane->funcs->disable_plane(plane);
 268
 269         sx_xunlock(&dev->mode_config.mutex);
 270 }