drivers/gpu/drm/qxl/qxl_drv.c

   1 /* vim: set ts=8 sw=8 tw=78 ai noexpandtab */
   2 /* qxl_drv.c -- QXL driver -*- linux-c -*-
   3  *
   4  * Copyright 2011 Red Hat, Inc.
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the next
  15  * paragraph) shall be included in all copies or substantial portions of the
  16  * Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  22  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  23  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  24  * OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  * Authors:
  27  *    Dave Airlie <airlie@redhat.com>
  28  *    Alon Levy <alevy@redhat.com>
  29  */
  30
  31 #include <linux/module.h>
  32 #include <linux/console.h>
  33
  34 #include <drm/drmP.h>
  35 #include <drm/drm.h>
  36 #include <drm/drm_modeset_helper.h>
  37 #include <drm/drm_probe_helper.h>
  38 #include "qxl_drv.h"
  39 #include "qxl_object.h"
  40
  41 static const struct pci_device_id pciidlist[] = {
  42         { 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8,
  43           0xffff00, 0 },
  44         { 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_OTHER << 8,
  45           0xffff00, 0 },
  46         { 0, 0, 0 },
  47 };
  48 MODULE_DEVICE_TABLE(pci, pciidlist);
  49
  50 static int qxl_modeset = -1;
  51 int qxl_num_crtc = 4;
  52
  53 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
  54 module_param_named(modeset, qxl_modeset, int, 0400);
  55
  56 MODULE_PARM_DESC(num_heads, "Number of virtual crtcs to expose (default 4)");
  57 module_param_named(num_heads, qxl_num_crtc, int, 0400);
  58
  59 static struct drm_driver qxl_driver;
  60 static struct pci_driver qxl_pci_driver;
  61
  62 static int
  63 qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  64 {
  65         struct qxl_device *qdev;
  66         int ret;
  67
  68         if (pdev->revision < 4) {
  69                 DRM_ERROR("qxl too old, doesn't support client_monitors_config,"
  70                           " use xf86-video-qxl in user mode");
  71                 return -EINVAL; /* TODO: ENODEV ? */
  72         }
  73
  74         qdev = kzalloc(sizeof(struct qxl_device), GFP_KERNEL);
  75         if (!qdev)
  76                 return -ENOMEM;
  77
  78         ret = pci_enable_device(pdev);
  79         if (ret)
  80                 goto free_dev;
  81
  82         ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, 0, "qxl");
  83         if (ret)
  84                 goto disable_pci;
  85
  86         ret = qxl_device_init(qdev, &qxl_driver, pdev);
  87         if (ret)
  88                 goto disable_pci;
  89
  90         ret = qxl_modeset_init(qdev);
  91         if (ret)
  92                 goto unload;
  93
  94         drm_kms_helper_poll_init(&qdev->ddev);
  95
  96         /* Complete initialization. */
  97         ret = drm_dev_register(&qdev->ddev, ent->driver_data);
  98         if (ret)
  99                 goto modeset_cleanup;
 100
 101         drm_fbdev_generic_setup(&qdev->ddev, 32);
 102         return 0;
 103
 104 modeset_cleanup:
 105         qxl_modeset_fini(qdev);
 106 unload:
 107         qxl_device_fini(qdev);
 108 disable_pci:
 109         pci_disable_device(pdev);
 110 free_dev:
 111         kfree(qdev);
 112         return ret;
 113 }
 114
 115 static void
 116 qxl_pci_remove(struct pci_dev *pdev)
 117 {
 118         struct drm_device *dev = pci_get_drvdata(pdev);
 119         struct qxl_device *qdev = dev->dev_private;
 120
 121         drm_dev_unregister(dev);
 122
 123         qxl_modeset_fini(qdev);
 124         qxl_device_fini(qdev);
 125
 126         dev->dev_private = NULL;
 127         kfree(qdev);
 128         drm_dev_put(dev);
 129 }
 130
 131 static const struct file_operations qxl_fops = {
 132         .owner = THIS_MODULE,
 133         .open = drm_open,
 134         .release = drm_release,
 135         .unlocked_ioctl = drm_ioctl,
 136         .poll = drm_poll,
 137         .read = drm_read,
 138         .mmap = qxl_mmap,
 139 };
 140
 141 static int qxl_drm_freeze(struct drm_device *dev)
 142 {
 143         struct pci_dev *pdev = dev->pdev;
 144         struct qxl_device *qdev = dev->dev_private;
 145         int ret;
 146
 147         ret = drm_mode_config_helper_suspend(dev);
 148         if (ret)
 149                 return ret;
 150
 151         qxl_destroy_monitors_object(qdev);
 152         qxl_surf_evict(qdev);
 153         qxl_vram_evict(qdev);
 154
 155         while (!qxl_check_idle(qdev->command_ring));
 156         while (!qxl_check_idle(qdev->release_ring))
 157                 qxl_queue_garbage_collect(qdev, 1);
 158
 159         pci_save_state(pdev);
 160
 161         return 0;
 162 }
 163
 164 static int qxl_drm_resume(struct drm_device *dev, bool thaw)
 165 {
 166         struct qxl_device *qdev = dev->dev_private;
 167
 168         qdev->ram_header->int_mask = QXL_INTERRUPT_MASK;
 169         if (!thaw) {
 170                 qxl_reinit_memslots(qdev);
 171                 qxl_ring_init_hdr(qdev->release_ring);
 172         }
 173
 174         qxl_create_monitors_object(qdev);
 175         return drm_mode_config_helper_resume(dev);
 176 }
 177
 178 static int qxl_pm_suspend(struct device *dev)
 179 {
 180         struct pci_dev *pdev = to_pci_dev(dev);
 181         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 182         int error;
 183
 184         error = qxl_drm_freeze(drm_dev);
 185         if (error)
 186                 return error;
 187
 188         pci_disable_device(pdev);
 189         pci_set_power_state(pdev, PCI_D3hot);
 190         return 0;
 191 }
 192
 193 static int qxl_pm_resume(struct device *dev)
 194 {
 195         struct pci_dev *pdev = to_pci_dev(dev);
 196         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 197
 198         pci_set_power_state(pdev, PCI_D0);
 199         pci_restore_state(pdev);
 200         if (pci_enable_device(pdev)) {
 201                 return -EIO;
 202         }
 203
 204         return qxl_drm_resume(drm_dev, false);
 205 }
 206
 207 static int qxl_pm_thaw(struct device *dev)
 208 {
 209         struct pci_dev *pdev = to_pci_dev(dev);
 210         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 211
 212         return qxl_drm_resume(drm_dev, true);
 213 }
 214
 215 static int qxl_pm_freeze(struct device *dev)
 216 {
 217         struct pci_dev *pdev = to_pci_dev(dev);
 218         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 219
 220         return qxl_drm_freeze(drm_dev);
 221 }
 222
 223 static int qxl_pm_restore(struct device *dev)
 224 {
 225         struct pci_dev *pdev = to_pci_dev(dev);
 226         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 227         struct qxl_device *qdev = drm_dev->dev_private;
 228
 229         qxl_io_reset(qdev);
 230         return qxl_drm_resume(drm_dev, false);
 231 }
 232
 233 static const struct dev_pm_ops qxl_pm_ops = {
 234         .suspend = qxl_pm_suspend,
 235         .resume = qxl_pm_resume,
 236         .freeze = qxl_pm_freeze,
 237         .thaw = qxl_pm_thaw,
 238         .poweroff = qxl_pm_freeze,
 239         .restore = qxl_pm_restore,
 240 };
 241 static struct pci_driver qxl_pci_driver = {
 242          .name = DRIVER_NAME,
 243          .id_table = pciidlist,
 244          .probe = qxl_pci_probe,
 245          .remove = qxl_pci_remove,
 246          .driver.pm = &qxl_pm_ops,
 247 };
 248
 249 static struct drm_driver qxl_driver = {
 250         .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
 251                            DRIVER_ATOMIC,
 252
 253         .dumb_create = qxl_mode_dumb_create,
 254         .dumb_map_offset = qxl_mode_dumb_mmap,
 255 #if defined(CONFIG_DEBUG_FS)
 256         .debugfs_init = qxl_debugfs_init,
 257 #endif
 258         .gem_prime_export = drm_gem_prime_export,
 259         .gem_prime_import = drm_gem_prime_import,
 260         .gem_prime_pin = qxl_gem_prime_pin,
 261         .gem_prime_unpin = qxl_gem_prime_unpin,
 262         .gem_prime_vmap = qxl_gem_prime_vmap,
 263         .gem_prime_vunmap = qxl_gem_prime_vunmap,
 264         .gem_prime_mmap = qxl_gem_prime_mmap,
 265         .gem_free_object_unlocked = qxl_gem_object_free,
 266         .gem_open_object = qxl_gem_object_open,
 267         .gem_close_object = qxl_gem_object_close,
 268         .fops = &qxl_fops,
 269         .ioctls = qxl_ioctls,
 270         .irq_handler = qxl_irq_handler,
 271         .name = DRIVER_NAME,
 272         .desc = DRIVER_DESC,
 273         .date = DRIVER_DATE,
 274         .major = 0,
 275         .minor = 1,
 276         .patchlevel = 0,
 277 };
 278
 279 static int __init qxl_init(void)
 280 {
 281         if (vgacon_text_force() && qxl_modeset == -1)
 282                 return -EINVAL;
 283
 284         if (qxl_modeset == 0)
 285                 return -EINVAL;
 286         qxl_driver.num_ioctls = qxl_max_ioctls;
 287         return pci_register_driver(&qxl_pci_driver);
 288 }
 289
 290 static void __exit qxl_exit(void)
 291 {
 292         pci_unregister_driver(&qxl_pci_driver);
 293 }
 294
 295 module_init(qxl_init);
 296 module_exit(qxl_exit);
 297
 298 MODULE_AUTHOR(DRIVER_AUTHOR);
 299 MODULE_DESCRIPTION(DRIVER_DESC);
 300 MODULE_LICENSE("GPL and additional rights");