sys/dev/drm/i915kms/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  * $FreeBSD: head/sys/dev/drm2/i915/intel_fb.c 251961 2013-06-18 20:19:09Z kib $
  27  */
  28
  29 #include <dev/drm/drmP.h>
  30 #include <dev/drm/drm.h>
  31 #include <dev/drm/drm_crtc.h>
  32 #include <dev/drm/drm_fb_helper.h>
  33 #include "i915_drm.h"
  34 #include "i915_drv.h"
  35 #include "intel_drv.h"
  36
  37 static int intelfb_create(struct intel_fbdev *ifbdev,
  38                           struct drm_fb_helper_surface_size *sizes)
  39 {
  40         struct drm_device *dev = ifbdev->helper.dev;
  41 #if 0
  42         struct drm_i915_private *dev_priv = dev->dev_private;
  43         struct fb_info *info;
  44 #endif
  45         struct drm_framebuffer *fb;
  46         struct drm_mode_fb_cmd2 mode_cmd;
  47         struct drm_i915_gem_object *obj;
  48         int size, ret;
  49
  50         /* we don't do packed 24bpp */
  51         if (sizes->surface_bpp == 24)
  52                 sizes->surface_bpp = 32;
  53
  54         mode_cmd.width = sizes->surface_width;
  55         mode_cmd.height = sizes->surface_height;
  56
  57         mode_cmd.pitches[0] = roundup2(mode_cmd.width * ((sizes->surface_bpp + 7) /
  58                                                          8), 64);
  59         mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
  60                                                           sizes->surface_depth);
  61
  62         size = mode_cmd.pitches[0] * mode_cmd.height;
  63         size = roundup2(size, PAGE_SIZE);
  64         obj = i915_gem_alloc_object(dev, size);
  65         if (!obj) {
  66                 DRM_ERROR("failed to allocate framebuffer\n");
  67                 ret = -ENOMEM;
  68                 goto out;
  69         }
  70
  71         DRM_LOCK(dev);
  72
  73         /* Flush everything out, we'll be doing GTT only from now on */
  74         ret = intel_pin_and_fence_fb_obj(dev, obj, false);
  75         if (ret) {
  76                 DRM_ERROR("failed to pin fb: %d\n", ret);
  77                 goto out_unref;
  78         }
  79
  80 #if 0
  81         info = framebuffer_alloc(0, device);
  82         if (!info) {
  83                 ret = -ENOMEM;
  84                 goto out_unpin;
  85         }
  86
  87         info->par = ifbdev;
  88 #endif
  89
  90         ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, obj);
  91         if (ret)
  92                 goto out_unpin;
  93
  94         fb = &ifbdev->ifb.base;
  95
  96         ifbdev->helper.fb = fb;
  97 #if 0
  98         ifbdev->helper.fbdev = info;
  99
 100         strcpy(info->fix.id, "inteldrmfb");
 101
 102         info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT;
 103         info->fbops = &intelfb_ops;
 104
 105         ret = fb_alloc_cmap(&info->cmap, 256, 0);
 106         if (ret) {
 107                 ret = -ENOMEM;
 108                 goto out_unpin;
 109         }
 110         /* setup aperture base/size for vesafb takeover */
 111         info->apertures = alloc_apertures(1);
 112         if (!info->apertures) {
 113                 ret = -ENOMEM;
 114                 goto out_unpin;
 115         }
 116         info->apertures->ranges[0].base = dev->mode_config.fb_base;
 117         info->apertures->ranges[0].size =
 118                 dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT;
 119
 120         info->fix.smem_start = dev->mode_config.fb_base + obj->gtt_offset;
 121         info->fix.smem_len = size;
 122
 123         info->screen_base = ioremap_wc(dev->agp->base + obj->gtt_offset, size);
 124         if (!info->screen_base) {
 125                 ret = -ENOSPC;
 126                 goto out_unpin;
 127         }
 128         info->screen_size = size;
 129
 130 //      memset(info->screen_base, 0, size);
 131
 132         drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
 133         drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
 134
 135         /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
 136 #endif
 137
 138         DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x, bo %p\n",
 139                       fb->width, fb->height,
 140                       obj->gtt_offset, obj);
 141
 142         DRM_UNLOCK(dev);
 143 #if 1
 144         KIB_NOTYET();
 145 #else
 146         vga_switcheroo_client_fb_set(dev->pdev, info);
 147 #endif
 148         return 0;
 149
 150 out_unpin:
 151         i915_gem_object_unpin(obj);
 152 out_unref:
 153         drm_gem_object_unreference(&obj->base);
 154         DRM_UNLOCK(dev);
 155 out:
 156         return ret;
 157 }
 158
 159 static int intel_fb_find_or_create_single(struct drm_fb_helper *helper,
 160                                           struct drm_fb_helper_surface_size *sizes)
 161 {
 162         struct intel_fbdev *ifbdev = (struct intel_fbdev *)helper;
 163         int new_fb = 0;
 164         int ret;
 165
 166         if (!helper->fb) {
 167                 ret = intelfb_create(ifbdev, sizes);
 168                 if (ret)
 169                         return ret;
 170                 new_fb = 1;
 171         }
 172         return new_fb;
 173 }
 174
 175 static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
 176         .gamma_set = intel_crtc_fb_gamma_set,
 177         .gamma_get = intel_crtc_fb_gamma_get,
 178         .fb_probe = intel_fb_find_or_create_single,
 179 };
 180
 181 static void intel_fbdev_destroy(struct drm_device *dev,
 182                                 struct intel_fbdev *ifbdev)
 183 {
 184 #if 0
 185         struct fb_info *info;
 186 #endif
 187         struct intel_framebuffer *ifb = &ifbdev->ifb;
 188
 189 #if 0
 190         if (ifbdev->helper.fbdev) {
 191                 info = ifbdev->helper.fbdev;
 192                 unregister_framebuffer(info);
 193                 iounmap(info->screen_base);
 194                 if (info->cmap.len)
 195                         fb_dealloc_cmap(&info->cmap);
 196                 framebuffer_release(info);
 197         }
 198 #endif
 199
 200         drm_fb_helper_fini(&ifbdev->helper);
 201
 202         drm_framebuffer_cleanup(&ifb->base);
 203         if (ifb->obj) {
 204                 drm_gem_object_unreference_unlocked(&ifb->obj->base);
 205                 ifb->obj = NULL;
 206         }
 207 }
 208
 209 extern int sc_txtmouse_no_retrace_wait;
 210
 211 int intel_fbdev_init(struct drm_device *dev)
 212 {
 213         struct intel_fbdev *ifbdev;
 214         drm_i915_private_t *dev_priv = dev->dev_private;
 215         int ret;
 216
 217         ifbdev = kmalloc(sizeof(struct intel_fbdev), DRM_MEM_KMS,
 218             M_WAITOK | M_ZERO);
 219
 220         dev_priv->fbdev = ifbdev;
 221         ifbdev->helper.funcs = &intel_fb_helper_funcs;
 222
 223         ret = drm_fb_helper_init(dev, &ifbdev->helper,
 224                                  dev_priv->num_pipe,
 225                                  INTELFB_CONN_LIMIT);
 226         if (ret) {
 227                 drm_free(ifbdev, DRM_MEM_KMS);
 228                 return ret;
 229         }
 230
 231         drm_fb_helper_single_add_all_connectors(&ifbdev->helper);
 232         drm_fb_helper_initial_config(&ifbdev->helper, 32);
 233         sc_txtmouse_no_retrace_wait = 1;
 234         return 0;
 235 }
 236
 237 void intel_fbdev_fini(struct drm_device *dev)
 238 {
 239         drm_i915_private_t *dev_priv = dev->dev_private;
 240         if (!dev_priv->fbdev)
 241                 return;
 242
 243         intel_fbdev_destroy(dev, dev_priv->fbdev);
 244         drm_free(dev_priv->fbdev, DRM_MEM_KMS);
 245         dev_priv->fbdev = NULL;
 246 }
 247
 248 void intel_fb_output_poll_changed(struct drm_device *dev)
 249 {
 250         drm_i915_private_t *dev_priv = dev->dev_private;
 251         drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper);
 252 }
 253
 254 void intel_fb_restore_mode(struct drm_device *dev)
 255 {
 256         int ret;
 257         drm_i915_private_t *dev_priv = dev->dev_private;
 258         struct drm_mode_config *config = &dev->mode_config;
 259         struct drm_plane *plane;
 260
 261         lockmgr(&dev->mode_config.lock, LK_EXCLUSIVE);
 262
 263         ret = drm_fb_helper_restore_fbdev_mode(&dev_priv->fbdev->helper);
 264         if (ret)
 265                 DRM_DEBUG("failed to restore crtc mode\n");
 266
 267         /* Be sure to shut off any planes that may be active */
 268         list_for_each_entry(plane, &config->plane_list, head)
 269                 plane->funcs->disable_plane(plane);
 270
 271         lockmgr(&dev->mode_config.lock, LK_RELEASE);
 272 }