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