LXR linux/drivers/staging/vboxvideo/vbox

   1/*
   2 * Copyright (C) 2013-2017 Oracle Corporation
   3 * This file is based on ast_drv.c
   4 * Copyright 2012 Red Hat Inc.
   5 *
   6 * Permission is hereby granted, free of charge, to any person obtaining a
   7 * copy of this software and associated documentation files (the
   8 * "Software"), to deal in the Software without restriction, including
   9 * without limitation the rights to use, copy, modify, merge, publish,
  10 * distribute, sub license, and/or sell copies of the Software, and to
  11 * permit persons to whom the Software is furnished to do so, subject to
  12 * the following conditions:
  13 *
  14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  17 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  18 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  19 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  20 * USE OR OTHER DEALINGS IN THE SOFTWARE.
  21 *
  22 * The above copyright notice and this permission notice (including the
  23 * next paragraph) shall be included in all copies or substantial portions
  24 * of the Software.
  25 *
  26 * Authors: Dave Airlie <airlied@redhat.com>
  27 *          Michael Thayer <michael.thayer@oracle.com,
  28 *          Hans de Goede <hdegoede@redhat.com>
  29 */
  30#include <linux/module.h>
  31#include <linux/console.h>
  32#include <linux/vt_kern.h>
  33
  34#include <drm/drmP.h>
  35#include <drm/drm_crtc_helper.h>
  36
  37#include "vbox_drv.h"
  38
  39static int vbox_modeset = -1;
  40
  41MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
  42module_param_named(modeset, vbox_modeset, int, 0400);
  43
  44static struct drm_driver driver;
  45
  46static const struct pci_device_id pciidlist[] = {
  47        { 0x80ee, 0xbeef, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
  48        { 0, 0, 0},
  49};
  50MODULE_DEVICE_TABLE(pci, pciidlist);
  51
  52static int vbox_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  53{
  54        return drm_get_pci_dev(pdev, ent, &driver);
  55}
  56
  57static void vbox_pci_remove(struct pci_dev *pdev)
  58{
  59        struct drm_device *dev = pci_get_drvdata(pdev);
  60
  61        drm_put_dev(dev);
  62}
  63
  64static int vbox_drm_freeze(struct drm_device *dev)
  65{
  66        struct vbox_private *vbox = dev->dev_private;
  67
  68        drm_kms_helper_poll_disable(dev);
  69
  70        pci_save_state(dev->pdev);
  71
  72        drm_fb_helper_set_suspend_unlocked(&vbox->fbdev->helper, true);
  73
  74        return 0;
  75}
  76
  77static int vbox_drm_thaw(struct drm_device *dev)
  78{
  79        struct vbox_private *vbox = dev->dev_private;
  80
  81        drm_mode_config_reset(dev);
  82        drm_helper_resume_force_mode(dev);
  83        drm_fb_helper_set_suspend_unlocked(&vbox->fbdev->helper, false);
  84
  85        return 0;
  86}
  87
  88static int vbox_drm_resume(struct drm_device *dev)
  89{
  90        int ret;
  91
  92        if (pci_enable_device(dev->pdev))
  93                return -EIO;
  94
  95        ret = vbox_drm_thaw(dev);
  96        if (ret)
  97                return ret;
  98
  99        drm_kms_helper_poll_enable(dev);
 100
 101        return 0;
 102}
 103
 104static int vbox_pm_suspend(struct device *dev)
 105{
 106        struct pci_dev *pdev = to_pci_dev(dev);
 107        struct drm_device *ddev = pci_get_drvdata(pdev);
 108        int error;
 109
 110        error = vbox_drm_freeze(ddev);
 111        if (error)
 112                return error;
 113
 114        pci_disable_device(pdev);
 115        pci_set_power_state(pdev, PCI_D3hot);
 116
 117        return 0;
 118}
 119
 120static int vbox_pm_resume(struct device *dev)
 121{
 122        struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
 123
 124        return vbox_drm_resume(ddev);
 125}
 126
 127static int vbox_pm_freeze(struct device *dev)
 128{
 129        struct pci_dev *pdev = to_pci_dev(dev);
 130        struct drm_device *ddev = pci_get_drvdata(pdev);
 131
 132        if (!ddev || !ddev->dev_private)
 133                return -ENODEV;
 134
 135        return vbox_drm_freeze(ddev);
 136}
 137
 138static int vbox_pm_thaw(struct device *dev)
 139{
 140        struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
 141
 142        return vbox_drm_thaw(ddev);
 143}
 144
 145static int vbox_pm_poweroff(struct device *dev)
 146{
 147        struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
 148
 149        return vbox_drm_freeze(ddev);
 150}
 151
 152static const struct dev_pm_ops vbox_pm_ops = {
 153        .suspend = vbox_pm_suspend,
 154        .resume = vbox_pm_resume,
 155        .freeze = vbox_pm_freeze,
 156        .thaw = vbox_pm_thaw,
 157        .poweroff = vbox_pm_poweroff,
 158        .restore = vbox_pm_resume,
 159};
 160
 161static struct pci_driver vbox_pci_driver = {
 162        .name = DRIVER_NAME,
 163        .id_table = pciidlist,
 164        .probe = vbox_pci_probe,
 165        .remove = vbox_pci_remove,
 166        .driver.pm = &vbox_pm_ops,
 167};
 168
 169static const struct file_operations vbox_fops = {
 170        .owner = THIS_MODULE,
 171        .open = drm_open,
 172        .release = drm_release,
 173        .unlocked_ioctl = drm_ioctl,
 174        .mmap = vbox_mmap,
 175        .poll = drm_poll,
 176#ifdef CONFIG_COMPAT
 177        .compat_ioctl = drm_compat_ioctl,
 178#endif
 179        .read = drm_read,
 180};
 181
 182static int vbox_master_set(struct drm_device *dev,
 183                           struct drm_file *file_priv, bool from_open)
 184{
 185        struct vbox_private *vbox = dev->dev_private;
 186
 187        /*
 188         * We do not yet know whether the new owner can handle hotplug, so we
 189         * do not advertise dynamic modes on the first query and send a
 190         * tentative hotplug notification after that to see if they query again.
 191         */
 192        vbox->initial_mode_queried = false;
 193
 194        mutex_lock(&vbox->hw_mutex);
 195        /*
 196         * Disable VBVA when someone releases master in case the next person
 197         * tries tries to do VESA.
 198         */
 199        /** @todo work out if anyone is likely to and whether it will work. */
 200        /*
 201         * Update: we also disable it because if the new master does not do
 202         * dirty rectangle reporting (e.g. old versions of Plymouth) then at
 203         * least the first screen will still be updated. We enable it as soon
 204         * as we receive a dirty rectangle report.
 205         */
 206        vbox_disable_accel(vbox);
 207        mutex_unlock(&vbox->hw_mutex);
 208
 209        return 0;
 210}
 211
 212static void vbox_master_drop(struct drm_device *dev, struct drm_file *file_priv)
 213{
 214        struct vbox_private *vbox = dev->dev_private;
 215
 216        /* See vbox_master_set() */
 217        vbox->initial_mode_queried = false;
 218
 219        mutex_lock(&vbox->hw_mutex);
 220        vbox_disable_accel(vbox);
 221        mutex_unlock(&vbox->hw_mutex);
 222}
 223
 224static struct drm_driver driver = {
 225        .driver_features =
 226            DRIVER_MODESET | DRIVER_GEM | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED |
 227            DRIVER_PRIME,
 228        .dev_priv_size = 0,
 229
 230        .load = vbox_driver_load,
 231        .unload = vbox_driver_unload,
 232        .lastclose = vbox_driver_lastclose,
 233        .master_set = vbox_master_set,
 234        .master_drop = vbox_master_drop,
 235
 236        .fops = &vbox_fops,
 237        .irq_handler = vbox_irq_handler,
 238        .name = DRIVER_NAME,
 239        .desc = DRIVER_DESC,
 240        .date = DRIVER_DATE,
 241        .major = DRIVER_MAJOR,
 242        .minor = DRIVER_MINOR,
 243        .patchlevel = DRIVER_PATCHLEVEL,
 244
 245        .gem_free_object = vbox_gem_free_object,
 246        .dumb_create = vbox_dumb_create,
 247        .dumb_map_offset = vbox_dumb_mmap_offset,
 248        .dumb_destroy = drm_gem_dumb_destroy,
 249        .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 250        .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 251        .gem_prime_export = drm_gem_prime_export,
 252        .gem_prime_import = drm_gem_prime_import,
 253        .gem_prime_pin = vbox_gem_prime_pin,
 254        .gem_prime_unpin = vbox_gem_prime_unpin,
 255        .gem_prime_get_sg_table = vbox_gem_prime_get_sg_table,
 256        .gem_prime_import_sg_table = vbox_gem_prime_import_sg_table,
 257        .gem_prime_vmap = vbox_gem_prime_vmap,
 258        .gem_prime_vunmap = vbox_gem_prime_vunmap,
 259        .gem_prime_mmap = vbox_gem_prime_mmap,
 260};
 261
 262static int __init vbox_init(void)
 263{
 264#ifdef CONFIG_VGA_CONSOLE
 265        if (vgacon_text_force() && vbox_modeset == -1)
 266                return -EINVAL;
 267#endif
 268
 269        if (vbox_modeset == 0)
 270                return -EINVAL;
 271
 272        return pci_register_driver(&vbox_pci_driver);
 273}
 274
 275static void __exit vbox_exit(void)
 276{
 277        pci_unregister_driver(&vbox_pci_driver);
 278}
 279
 280module_init(vbox_init);
 281module_exit(vbox_exit);
 282
 283MODULE_AUTHOR("Oracle Corporation");
 284MODULE_DESCRIPTION(DRIVER_DESC);
 285MODULE_LICENSE("GPL and additional rights");
 286