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_crtc_helper.h>
  37 #include "qxl_drv.h"
  38 #include "qxl_object.h"
  39
  40 static const struct pci_device_id pciidlist[] = {
  41         { 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8,
  42           0xffff00, 0 },
  43         { 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_OTHER << 8,
  44           0xffff00, 0 },
  45         { 0, 0, 0 },
  46 };
  47 MODULE_DEVICE_TABLE(pci, pciidlist);
  48
  49 static int qxl_modeset = -1;
  50 int qxl_num_crtc = 4;
  51
  52 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
  53 module_param_named(modeset, qxl_modeset, int, 0400);
  54
  55 MODULE_PARM_DESC(num_heads, "Number of virtual crtcs to expose (default 4)");
  56 module_param_named(num_heads, qxl_num_crtc, int, 0400);
  57
  58 static struct drm_driver qxl_driver;
  59 static struct pci_driver qxl_pci_driver;
  60
  61 static int
  62 qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  63 {
  64         struct qxl_device *qdev;
  65         int ret;
  66
  67         if (pdev->revision < 4) {
  68                 DRM_ERROR("qxl too old, doesn't support client_monitors_config,"
  69                           " use xf86-video-qxl in user mode");
  70                 return -EINVAL; /* TODO: ENODEV ? */
  71         }
  72
  73         qdev = kzalloc(sizeof(struct qxl_device), GFP_KERNEL);
  74         if (!qdev)
  75                 return -ENOMEM;
  76
  77         ret = pci_enable_device(pdev);
  78         if (ret)
  79                 goto free_dev;
  80
  81         ret = qxl_device_init(qdev, &qxl_driver, pdev);
  82         if (ret)
  83                 goto disable_pci;
  84
  85         ret = qxl_modeset_init(qdev);
  86         if (ret)
  87                 goto unload;
  88
  89         drm_kms_helper_poll_init(&qdev->ddev);
  90
  91         /* Complete initialization. */
  92         ret = drm_dev_register(&qdev->ddev, ent->driver_data);
  93         if (ret)
  94                 goto modeset_cleanup;
  95
  96         return 0;
  97
  98 modeset_cleanup:
  99         qxl_modeset_fini(qdev);
 100 unload:
 101         qxl_device_fini(qdev);
 102 disable_pci:
 103         pci_disable_device(pdev);
 104 free_dev:
 105         kfree(qdev);
 106         return ret;
 107 }
 108
 109 static void
 110 qxl_pci_remove(struct pci_dev *pdev)
 111 {
 112         struct drm_device *dev = pci_get_drvdata(pdev);
 113         struct qxl_device *qdev = dev->dev_private;
 114
 115         drm_dev_unregister(dev);
 116
 117         qxl_modeset_fini(qdev);
 118         qxl_device_fini(qdev);
 119
 120         dev->dev_private = NULL;
 121         kfree(qdev);
 122         drm_dev_unref(dev);
 123 }
 124
 125 static const struct file_operations qxl_fops = {
 126         .owner = THIS_MODULE,
 127         .open = drm_open,
 128         .release = drm_release,
 129         .unlocked_ioctl = drm_ioctl,
 130         .poll = drm_poll,
 131         .read = drm_read,
 132         .mmap = qxl_mmap,
 133 };
 134
 135 static int qxl_drm_freeze(struct drm_device *dev)
 136 {
 137         struct pci_dev *pdev = dev->pdev;
 138         struct qxl_device *qdev = dev->dev_private;
 139         struct drm_crtc *crtc;
 140
 141         drm_kms_helper_poll_disable(dev);
 142
 143         console_lock();
 144         qxl_fbdev_set_suspend(qdev, 1);
 145         console_unlock();
 146
 147         /* unpin the front buffers */
 148         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 149                 const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
 150                 if (crtc->enabled)
 151                         (*crtc_funcs->disable)(crtc);
 152         }
 153
 154         qxl_destroy_monitors_object(qdev);
 155         qxl_surf_evict(qdev);
 156         qxl_vram_evict(qdev);
 157
 158         while (!qxl_check_idle(qdev->command_ring));
 159         while (!qxl_check_idle(qdev->release_ring))
 160                 qxl_queue_garbage_collect(qdev, 1);
 161
 162         pci_save_state(pdev);
 163
 164         return 0;
 165 }
 166
 167 static int qxl_drm_resume(struct drm_device *dev, bool thaw)
 168 {
 169         struct qxl_device *qdev = dev->dev_private;
 170
 171         qdev->ram_header->int_mask = QXL_INTERRUPT_MASK;
 172         if (!thaw) {
 173                 qxl_reinit_memslots(qdev);
 174                 qxl_ring_init_hdr(qdev->release_ring);
 175         }
 176
 177         qxl_create_monitors_object(qdev);
 178         drm_helper_resume_force_mode(dev);
 179
 180         console_lock();
 181         qxl_fbdev_set_suspend(qdev, 0);
 182         console_unlock();
 183
 184         drm_kms_helper_poll_enable(dev);
 185         return 0;
 186 }
 187
 188 static int qxl_pm_suspend(struct device *dev)
 189 {
 190         struct pci_dev *pdev = to_pci_dev(dev);
 191         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 192         int error;
 193
 194         error = qxl_drm_freeze(drm_dev);
 195         if (error)
 196                 return error;
 197
 198         pci_disable_device(pdev);
 199         pci_set_power_state(pdev, PCI_D3hot);
 200         return 0;
 201 }
 202
 203 static int qxl_pm_resume(struct device *dev)
 204 {
 205         struct pci_dev *pdev = to_pci_dev(dev);
 206         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 207
 208         pci_set_power_state(pdev, PCI_D0);
 209         pci_restore_state(pdev);
 210         if (pci_enable_device(pdev)) {
 211                 return -EIO;
 212         }
 213
 214         return qxl_drm_resume(drm_dev, false);
 215 }
 216
 217 static int qxl_pm_thaw(struct device *dev)
 218 {
 219         struct pci_dev *pdev = to_pci_dev(dev);
 220         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 221
 222         return qxl_drm_resume(drm_dev, true);
 223 }
 224
 225 static int qxl_pm_freeze(struct device *dev)
 226 {
 227         struct pci_dev *pdev = to_pci_dev(dev);
 228         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 229
 230         return qxl_drm_freeze(drm_dev);
 231 }
 232
 233 static int qxl_pm_restore(struct device *dev)
 234 {
 235         struct pci_dev *pdev = to_pci_dev(dev);
 236         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 237         struct qxl_device *qdev = drm_dev->dev_private;
 238
 239         qxl_io_reset(qdev);
 240         return qxl_drm_resume(drm_dev, false);
 241 }
 242
 243 static const struct dev_pm_ops qxl_pm_ops = {
 244         .suspend = qxl_pm_suspend,
 245         .resume = qxl_pm_resume,
 246         .freeze = qxl_pm_freeze,
 247         .thaw = qxl_pm_thaw,
 248         .poweroff = qxl_pm_freeze,
 249         .restore = qxl_pm_restore,
 250 };
 251 static struct pci_driver qxl_pci_driver = {
 252          .name = DRIVER_NAME,
 253          .id_table = pciidlist,
 254          .probe = qxl_pci_probe,
 255          .remove = qxl_pci_remove,
 256          .driver.pm = &qxl_pm_ops,
 257 };
 258
 259 static struct drm_driver qxl_driver = {
 260         .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
 261                            DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED |
 262                            DRIVER_ATOMIC,
 263
 264         .dumb_create = qxl_mode_dumb_create,
 265         .dumb_map_offset = qxl_mode_dumb_mmap,
 266 #if defined(CONFIG_DEBUG_FS)
 267         .debugfs_init = qxl_debugfs_init,
 268 #endif
 269         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 270         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 271         .gem_prime_export = drm_gem_prime_export,
 272         .gem_prime_import = drm_gem_prime_import,
 273         .gem_prime_pin = qxl_gem_prime_pin,
 274         .gem_prime_unpin = qxl_gem_prime_unpin,
 275         .gem_prime_get_sg_table = qxl_gem_prime_get_sg_table,
 276         .gem_prime_import_sg_table = qxl_gem_prime_import_sg_table,
 277         .gem_prime_vmap = qxl_gem_prime_vmap,
 278         .gem_prime_vunmap = qxl_gem_prime_vunmap,
 279         .gem_prime_mmap = qxl_gem_prime_mmap,
 280         .gem_free_object_unlocked = qxl_gem_object_free,
 281         .gem_open_object = qxl_gem_object_open,
 282         .gem_close_object = qxl_gem_object_close,
 283         .fops = &qxl_fops,
 284         .ioctls = qxl_ioctls,
 285         .irq_handler = qxl_irq_handler,
 286         .name = DRIVER_NAME,
 287         .desc = DRIVER_DESC,
 288         .date = DRIVER_DATE,
 289         .major = 0,
 290         .minor = 1,
 291         .patchlevel = 0,
 292 };
 293
 294 static int __init qxl_init(void)
 295 {
 296         if (vgacon_text_force() && qxl_modeset == -1)
 297                 return -EINVAL;
 298
 299         if (qxl_modeset == 0)
 300                 return -EINVAL;
 301         qxl_driver.num_ioctls = qxl_max_ioctls;
 302         return pci_register_driver(&qxl_pci_driver);
 303 }
 304
 305 static void __exit qxl_exit(void)
 306 {
 307         pci_unregister_driver(&qxl_pci_driver);
 308 }
 309
 310 module_init(qxl_init);
 311 module_exit(qxl_exit);
 312
 313 MODULE_AUTHOR(DRIVER_AUTHOR);
 314 MODULE_DESCRIPTION(DRIVER_DESC);
 315 MODULE_LICENSE("GPL and additional rights");