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 "qxl_drv.h"
  32 #include <linux/console.h>
  33 #include <linux/module.h>
  34 #include <linux/pci.h>
  35
  36 #include <drm/drm.h>
  37 #include <drm/drm_drv.h>
  38 #include <drm/drm_file.h>
  39 #include <drm/drm_modeset_helper.h>
  40 #include <drm/drm_prime.h>
  41 #include <drm/drm_probe_helper.h>
  42
  43 #include "qxl_object.h"
  44
  45 static const struct pci_device_id pciidlist[] = {
  46         { 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8,
  47           0xffff00, 0 },
  48         { 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_OTHER << 8,
  49           0xffff00, 0 },
  50         { 0, 0, 0 },
  51 };
  52 MODULE_DEVICE_TABLE(pci, pciidlist);
  53
  54 static int qxl_modeset = -1;
  55 int qxl_num_crtc = 4;
  56
  57 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
  58 module_param_named(modeset, qxl_modeset, int, 0400);
  59
  60 MODULE_PARM_DESC(num_heads, "Number of virtual crtcs to expose (default 4)");
  61 module_param_named(num_heads, qxl_num_crtc, int, 0400);
  62
  63 static struct drm_driver qxl_driver;
  64 static struct pci_driver qxl_pci_driver;
  65
  66 static bool is_vga(struct pci_dev *pdev)
  67 {
  68         return pdev->class == PCI_CLASS_DISPLAY_VGA << 8;
  69 }
  70
  71 static int
  72 qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  73 {
  74         struct qxl_device *qdev;
  75         int ret;
  76
  77         if (pdev->revision < 4) {
  78                 DRM_ERROR("qxl too old, doesn't support client_monitors_config,"
  79                           " use xf86-video-qxl in user mode");
  80                 return -EINVAL; /* TODO: ENODEV ? */
  81         }
  82
  83         qdev = kzalloc(sizeof(struct qxl_device), GFP_KERNEL);
  84         if (!qdev)
  85                 return -ENOMEM;
  86
  87         ret = pci_enable_device(pdev);
  88         if (ret)
  89                 goto free_dev;
  90
  91         ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, "qxl");
  92         if (ret)
  93                 goto disable_pci;
  94
  95         if (is_vga(pdev)) {
  96                 ret = vga_get_interruptible(pdev, VGA_RSRC_LEGACY_IO);
  97                 if (ret) {
  98                         DRM_ERROR("can't get legacy vga ioports\n");
  99                         goto disable_pci;
 100                 }
 101         }
 102
 103         ret = qxl_device_init(qdev, &qxl_driver, pdev);
 104         if (ret)
 105                 goto put_vga;
 106
 107         ret = qxl_modeset_init(qdev);
 108         if (ret)
 109                 goto unload;
 110
 111         drm_kms_helper_poll_init(&qdev->ddev);
 112
 113         /* Complete initialization. */
 114         ret = drm_dev_register(&qdev->ddev, ent->driver_data);
 115         if (ret)
 116                 goto modeset_cleanup;
 117
 118         drm_fbdev_generic_setup(&qdev->ddev, 32);
 119         return 0;
 120
 121 modeset_cleanup:
 122         qxl_modeset_fini(qdev);
 123 unload:
 124         qxl_device_fini(qdev);
 125 put_vga:
 126         if (is_vga(pdev))
 127                 vga_put(pdev, VGA_RSRC_LEGACY_IO);
 128 disable_pci:
 129         pci_disable_device(pdev);
 130 free_dev:
 131         kfree(qdev);
 132         return ret;
 133 }
 134
 135 static void
 136 qxl_pci_remove(struct pci_dev *pdev)
 137 {
 138         struct drm_device *dev = pci_get_drvdata(pdev);
 139         struct qxl_device *qdev = dev->dev_private;
 140
 141         drm_dev_unregister(dev);
 142
 143         qxl_modeset_fini(qdev);
 144         qxl_device_fini(qdev);
 145         if (is_vga(pdev))
 146                 vga_put(pdev, VGA_RSRC_LEGACY_IO);
 147
 148         dev->dev_private = NULL;
 149         kfree(qdev);
 150         drm_dev_put(dev);
 151 }
 152
 153 DEFINE_DRM_GEM_FOPS(qxl_fops);
 154
 155 static int qxl_drm_freeze(struct drm_device *dev)
 156 {
 157         struct pci_dev *pdev = dev->pdev;
 158         struct qxl_device *qdev = dev->dev_private;
 159         int ret;
 160
 161         ret = drm_mode_config_helper_suspend(dev);
 162         if (ret)
 163                 return ret;
 164
 165         qxl_destroy_monitors_object(qdev);
 166         qxl_surf_evict(qdev);
 167         qxl_vram_evict(qdev);
 168
 169         while (!qxl_check_idle(qdev->command_ring));
 170         while (!qxl_check_idle(qdev->release_ring))
 171                 qxl_queue_garbage_collect(qdev, 1);
 172
 173         pci_save_state(pdev);
 174
 175         return 0;
 176 }
 177
 178 static int qxl_drm_resume(struct drm_device *dev, bool thaw)
 179 {
 180         struct qxl_device *qdev = dev->dev_private;
 181
 182         qdev->ram_header->int_mask = QXL_INTERRUPT_MASK;
 183         if (!thaw) {
 184                 qxl_reinit_memslots(qdev);
 185                 qxl_ring_init_hdr(qdev->release_ring);
 186         }
 187
 188         qxl_create_monitors_object(qdev);
 189         return drm_mode_config_helper_resume(dev);
 190 }
 191
 192 static int qxl_pm_suspend(struct device *dev)
 193 {
 194         struct pci_dev *pdev = to_pci_dev(dev);
 195         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 196         int error;
 197
 198         error = qxl_drm_freeze(drm_dev);
 199         if (error)
 200                 return error;
 201
 202         pci_disable_device(pdev);
 203         pci_set_power_state(pdev, PCI_D3hot);
 204         return 0;
 205 }
 206
 207 static int qxl_pm_resume(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         pci_set_power_state(pdev, PCI_D0);
 213         pci_restore_state(pdev);
 214         if (pci_enable_device(pdev)) {
 215                 return -EIO;
 216         }
 217
 218         return qxl_drm_resume(drm_dev, false);
 219 }
 220
 221 static int qxl_pm_thaw(struct device *dev)
 222 {
 223         struct drm_device *drm_dev = dev_get_drvdata(dev);
 224
 225         return qxl_drm_resume(drm_dev, true);
 226 }
 227
 228 static int qxl_pm_freeze(struct device *dev)
 229 {
 230         struct drm_device *drm_dev = dev_get_drvdata(dev);
 231
 232         return qxl_drm_freeze(drm_dev);
 233 }
 234
 235 static int qxl_pm_restore(struct device *dev)
 236 {
 237         struct pci_dev *pdev = to_pci_dev(dev);
 238         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 239         struct qxl_device *qdev = drm_dev->dev_private;
 240
 241         qxl_io_reset(qdev);
 242         return qxl_drm_resume(drm_dev, false);
 243 }
 244
 245 static const struct dev_pm_ops qxl_pm_ops = {
 246         .suspend = qxl_pm_suspend,
 247         .resume = qxl_pm_resume,
 248         .freeze = qxl_pm_freeze,
 249         .thaw = qxl_pm_thaw,
 250         .poweroff = qxl_pm_freeze,
 251         .restore = qxl_pm_restore,
 252 };
 253 static struct pci_driver qxl_pci_driver = {
 254          .name = DRIVER_NAME,
 255          .id_table = pciidlist,
 256          .probe = qxl_pci_probe,
 257          .remove = qxl_pci_remove,
 258          .driver.pm = &qxl_pm_ops,
 259 };
 260
 261 static struct drm_driver qxl_driver = {
 262         .driver_features = DRIVER_GEM | DRIVER_MODESET | 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_import_sg_table = qxl_gem_prime_import_sg_table,
 272         .gem_prime_mmap = qxl_gem_prime_mmap,
 273         .fops = &qxl_fops,
 274         .ioctls = qxl_ioctls,
 275         .irq_handler = qxl_irq_handler,
 276         .name = DRIVER_NAME,
 277         .desc = DRIVER_DESC,
 278         .date = DRIVER_DATE,
 279         .major = 0,
 280         .minor = 1,
 281         .patchlevel = 0,
 282 };
 283
 284 static int __init qxl_init(void)
 285 {
 286         if (vgacon_text_force() && qxl_modeset == -1)
 287                 return -EINVAL;
 288
 289         if (qxl_modeset == 0)
 290                 return -EINVAL;
 291         qxl_driver.num_ioctls = qxl_max_ioctls;
 292         return pci_register_driver(&qxl_pci_driver);
 293 }
 294
 295 static void __exit qxl_exit(void)
 296 {
 297         pci_unregister_driver(&qxl_pci_driver);
 298 }
 299
 300 module_init(qxl_init);
 301 module_exit(qxl_exit);
 302
 303 MODULE_AUTHOR(DRIVER_AUTHOR);
 304 MODULE_DESCRIPTION(DRIVER_DESC);
 305 MODULE_LICENSE("GPL and additional rights");