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