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 "opt_syscons.h"
  31 #include <dev/drm2/drmP.h>
  32 #include <dev/drm2/drm.h>
  33 #include <dev/drm2/drm_crtc.h>
  34 #include <dev/drm2/drm_fb_helper.h>
  35 #include <dev/drm2/i915/i915_drm.h>
  36 #include <dev/drm2/i915/i915_drv.h>
  37 #include <dev/drm2/i915/intel_drv.h>
  38
  39 static int intelfb_create(struct intel_fbdev *ifbdev,
  40                           struct drm_fb_helper_surface_size *sizes)
  41 {
  42         struct drm_device *dev = ifbdev->helper.dev;
  43 #if 0
  44         struct drm_i915_private *dev_priv = dev->dev_private;
  45 #endif
  46         struct fb_info *info;
  47         struct drm_framebuffer *fb;
  48         struct drm_mode_fb_cmd2 mode_cmd;
  49         struct drm_i915_gem_object *obj;
  50         int size, ret;
  51
  52         /* we don't do packed 24bpp */
  53         if (sizes->surface_bpp == 24)
  54                 sizes->surface_bpp = 32;
  55
  56         mode_cmd.width = sizes->surface_width;
  57         mode_cmd.height = sizes->surface_height;
  58
  59         mode_cmd.pitches[0] = roundup2(mode_cmd.width * ((sizes->surface_bpp + 7) /
  60                                                          8), 64);
  61         mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
  62                                                           sizes->surface_depth);
  63
  64         size = mode_cmd.pitches[0] * mode_cmd.height;
  65         size = roundup2(size, PAGE_SIZE);
  66         obj = i915_gem_alloc_object(dev, size);
  67         if (!obj) {
  68                 DRM_ERROR("failed to allocate framebuffer\n");
  69                 ret = -ENOMEM;
  70                 goto out;
  71         }
  72
  73         DRM_LOCK(dev);
  74
  75         /* Flush everything out, we'll be doing GTT only from now on */
  76         ret = intel_pin_and_fence_fb_obj(dev, obj, false);
  77         if (ret) {
  78                 DRM_ERROR("failed to pin fb: %d\n", ret);
  79                 goto out_unref;
  80         }
  81
  82 #if 0
  83         info = framebuffer_alloc(0, device);
  84         if (!info) {
  85                 ret = -ENOMEM;
  86                 goto out_unpin;
  87         }
  88
  89         info->par = ifbdev;
  90 #else
  91         info = malloc(sizeof(struct fb_info), DRM_MEM_KMS, M_WAITOK | M_ZERO);
  92         info->fb_size = size;
  93         info->fb_bpp = sizes->surface_bpp;
  94         info->fb_width = sizes->fb_width;
  95         info->fb_height = sizes->fb_height;
  96         info->fb_pbase = dev->agp->base + obj->gtt_offset;
  97         info->fb_vbase = (vm_offset_t)pmap_mapdev_attr(info->fb_pbase, size,
  98             PAT_WRITE_COMBINING);
  99
 100 #endif
 101
 102         ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, obj);
 103         if (ret)
 104                 goto out_unpin;
 105
 106         fb = &ifbdev->ifb.base;
 107
 108         ifbdev->helper.fb = fb;
 109         ifbdev->helper.fbdev = info;
 110 #if 0
 111
 112         strcpy(info->fix.id, "inteldrmfb");
 113
 114         info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT;
 115         info->fbops = &intelfb_ops;
 116
 117         ret = fb_alloc_cmap(&info->cmap, 256, 0);
 118         if (ret) {
 119                 ret = -ENOMEM;
 120                 goto out_unpin;
 121         }
 122         /* setup aperture base/size for vesafb takeover */
 123         info->apertures = alloc_apertures(1);
 124         if (!info->apertures) {
 125                 ret = -ENOMEM;
 126                 goto out_unpin;
 127         }
 128         info->apertures->ranges[0].base = dev->mode_config.fb_base;
 129         info->apertures->ranges[0].size =
 130                 dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT;
 131
 132         info->fix.smem_start = dev->mode_config.fb_base + obj->gtt_offset;
 133         info->fix.smem_len = size;
 134
 135         info->screen_base = ioremap_wc(dev->agp->base + obj->gtt_offset, size);
 136         if (!info->screen_base) {
 137                 ret = -ENOSPC;
 138                 goto out_unpin;
 139         }
 140         info->screen_size = size;
 141
 142 //      memset(info->screen_base, 0, size);
 143
 144         drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
 145         drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
 146
 147         /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
 148 #endif
 149         DRM_DEBUG_KMS("allocated %dx%d (s %dbits) fb: 0x%08x, bo %p\n",
 150                       fb->width, fb->height, fb->depth,
 151                       obj->gtt_offset, obj);
 152
 153         DRM_UNLOCK(dev);
 154 #if 1
 155         KIB_NOTYET();
 156 #else
 157         vga_switcheroo_client_fb_set(dev->pdev, info);
 158 #endif
 159         return 0;
 160
 161 out_unpin:
 162         i915_gem_object_unpin(obj);
 163 out_unref:
 164         drm_gem_object_unreference(&obj->base);
 165         DRM_UNLOCK(dev);
 166 out:
 167         return ret;
 168 }
 169
 170 static int intel_fb_find_or_create_single(struct drm_fb_helper *helper,
 171                                           struct drm_fb_helper_surface_size *sizes)
 172 {
 173         struct intel_fbdev *ifbdev = (struct intel_fbdev *)helper;
 174         int new_fb = 0;
 175         int ret;
 176
 177         if (!helper->fb) {
 178                 ret = intelfb_create(ifbdev, sizes);
 179                 if (ret)
 180                         return ret;
 181                 new_fb = 1;
 182         }
 183         return new_fb;
 184 }
 185
 186 static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
 187         .gamma_set = intel_crtc_fb_gamma_set,
 188         .gamma_get = intel_crtc_fb_gamma_get,
 189         .fb_probe = intel_fb_find_or_create_single,
 190 };
 191
 192 static void intel_fbdev_destroy(struct drm_device *dev,
 193                                 struct intel_fbdev *ifbdev)
 194 {
 195 #if 0
 196         struct fb_info *info;
 197 #endif
 198         struct intel_framebuffer *ifb = &ifbdev->ifb;
 199
 200 #if 0
 201         if (ifbdev->helper.fbdev) {
 202                 info = ifbdev->helper.fbdev;
 203                 unregister_framebuffer(info);
 204                 iounmap(info->screen_base);
 205                 if (info->cmap.len)
 206                         fb_dealloc_cmap(&info->cmap);
 207                 framebuffer_release(info);
 208         }
 209 #endif
 210
 211         drm_fb_helper_fini(&ifbdev->helper);
 212
 213         drm_framebuffer_cleanup(&ifb->base);
 214         if (ifb->obj) {
 215                 drm_gem_object_unreference_unlocked(&ifb->obj->base);
 216                 ifb->obj = NULL;
 217         }
 218 }
 219
 220 #ifdef DEV_SC
 221 extern int sc_txtmouse_no_retrace_wait;
 222 #endif
 223
 224 int intel_fbdev_init(struct drm_device *dev)
 225 {
 226         struct intel_fbdev *ifbdev;
 227         drm_i915_private_t *dev_priv = dev->dev_private;
 228         int ret;
 229
 230         ifbdev = malloc(sizeof(struct intel_fbdev), DRM_MEM_KMS,
 231             M_WAITOK | M_ZERO);
 232
 233         dev_priv->fbdev = ifbdev;
 234         ifbdev->helper.funcs = &intel_fb_helper_funcs;
 235
 236         ret = drm_fb_helper_init(dev, &ifbdev->helper,
 237                                  dev_priv->num_pipe,
 238                                  INTELFB_CONN_LIMIT);
 239         if (ret) {
 240                 free(ifbdev, DRM_MEM_KMS);
 241                 return ret;
 242         }
 243
 244         drm_fb_helper_single_add_all_connectors(&ifbdev->helper);
 245         drm_fb_helper_initial_config(&ifbdev->helper, 32);
 246 #ifdef DEV_SC
 247         sc_txtmouse_no_retrace_wait = 1;
 248 #endif
 249         return 0;
 250 }
 251
 252 void intel_fbdev_fini(struct drm_device *dev)
 253 {
 254         drm_i915_private_t *dev_priv = dev->dev_private;
 255         if (!dev_priv->fbdev)
 256                 return;
 257
 258         intel_fbdev_destroy(dev, dev_priv->fbdev);
 259         free(dev_priv->fbdev, DRM_MEM_KMS);
 260         dev_priv->fbdev = NULL;
 261 }
 262
 263 void intel_fb_output_poll_changed(struct drm_device *dev)
 264 {
 265         drm_i915_private_t *dev_priv = dev->dev_private;
 266         drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper);
 267 }
 268
 269 void intel_fb_restore_mode(struct drm_device *dev)
 270 {
 271         int ret;
 272         drm_i915_private_t *dev_priv = dev->dev_private;
 273         struct drm_mode_config *config = &dev->mode_config;
 274         struct drm_plane *plane;
 275
 276         sx_xlock(&dev->mode_config.mutex);
 277
 278         ret = drm_fb_helper_restore_fbdev_mode(&dev_priv->fbdev->helper);
 279         if (ret)
 280                 DRM_DEBUG("failed to restore crtc mode\n");
 281
 282         /* Be sure to shut off any planes that may be active */
 283         list_for_each_entry(plane, &config->plane_list, head)
 284                 plane->funcs->disable_plane(plane);
 285
 286         sx_xunlock(&dev->mode_config.mutex);
 287 }