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 bool is_vga(struct pci_dev *pdev) 63 { 64 return pdev->class == PCI_CLASS_DISPLAY_VGA << 8; 65 } 66 67 static int 68 qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 69 { 70 struct qxl_device *qdev; 71 int ret; 72 73 if (pdev->revision < 4) { 74 DRM_ERROR("qxl too old, doesn't support client_monitors_config," 75 " use xf86-video-qxl in user mode"); 76 return -EINVAL; /* TODO: ENODEV ? */ 77 } 78 79 qdev = kzalloc(sizeof(struct qxl_device), GFP_KERNEL); 80 if (!qdev) 81 return -ENOMEM; 82 83 ret = pci_enable_device(pdev); 84 if (ret) 85 goto free_dev; 86 87 ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, 0, "qxl"); 88 if (ret) 89 goto disable_pci; 90 91 if (is_vga(pdev)) { 92 ret = vga_get_interruptible(pdev, VGA_RSRC_LEGACY_IO); 93 if (ret) { 94 DRM_ERROR("can't get legacy vga ioports\n"); 95 goto disable_pci; 96 } 97 } 98 99 ret = qxl_device_init(qdev, &qxl_driver, pdev); 100 if (ret) 101 goto put_vga; 102 103 ret = qxl_modeset_init(qdev); 104 if (ret) 105 goto unload; 106 107 drm_kms_helper_poll_init(&qdev->ddev); 108 109 /* Complete initialization. */ 110 ret = drm_dev_register(&qdev->ddev, ent->driver_data); 111 if (ret) 112 goto modeset_cleanup; 113 114 drm_fbdev_generic_setup(&qdev->ddev, 32); 115 return 0; 116 117 modeset_cleanup: 118 qxl_modeset_fini(qdev); 119 unload: 120 qxl_device_fini(qdev); 121 put_vga: 122 if (is_vga(pdev)) 123 vga_put(pdev, VGA_RSRC_LEGACY_IO); 124 disable_pci: 125 pci_disable_device(pdev); 126 free_dev: 127 kfree(qdev); 128 return ret; 129 } 130 131 static void 132 qxl_pci_remove(struct pci_dev *pdev) 133 { 134 struct drm_device *dev = pci_get_drvdata(pdev); 135 struct qxl_device *qdev = dev->dev_private; 136 137 drm_dev_unregister(dev); 138 139 qxl_modeset_fini(qdev); 140 qxl_device_fini(qdev); 141 if (is_vga(pdev)) 142 vga_put(pdev, VGA_RSRC_LEGACY_IO); 143 144 dev->dev_private = NULL; 145 kfree(qdev); 146 drm_dev_put(dev); 147 } 148 149 static const struct file_operations qxl_fops = { 150 .owner = THIS_MODULE, 151 .open = drm_open, 152 .release = drm_release, 153 .unlocked_ioctl = drm_ioctl, 154 .poll = drm_poll, 155 .read = drm_read, 156 .mmap = qxl_mmap, 157 }; 158 159 static int qxl_drm_freeze(struct drm_device *dev) 160 { 161 struct pci_dev *pdev = dev->pdev; 162 struct qxl_device *qdev = dev->dev_private; 163 int ret; 164 165 ret = drm_mode_config_helper_suspend(dev); 166 if (ret) 167 return ret; 168 169 qxl_destroy_monitors_object(qdev); 170 qxl_surf_evict(qdev); 171 qxl_vram_evict(qdev); 172 173 while (!qxl_check_idle(qdev->command_ring)); 174 while (!qxl_check_idle(qdev->release_ring)) 175 qxl_queue_garbage_collect(qdev, 1); 176 177 pci_save_state(pdev); 178 179 return 0; 180 } 181 182 static int qxl_drm_resume(struct drm_device *dev, bool thaw) 183 { 184 struct qxl_device *qdev = dev->dev_private; 185 186 qdev->ram_header->int_mask = QXL_INTERRUPT_MASK; 187 if (!thaw) { 188 qxl_reinit_memslots(qdev); 189 qxl_ring_init_hdr(qdev->release_ring); 190 } 191 192 qxl_create_monitors_object(qdev); 193 return drm_mode_config_helper_resume(dev); 194 } 195 196 static int qxl_pm_suspend(struct device *dev) 197 { 198 struct pci_dev *pdev = to_pci_dev(dev); 199 struct drm_device *drm_dev = pci_get_drvdata(pdev); 200 int error; 201 202 error = qxl_drm_freeze(drm_dev); 203 if (error) 204 return error; 205 206 pci_disable_device(pdev); 207 pci_set_power_state(pdev, PCI_D3hot); 208 return 0; 209 } 210 211 static int qxl_pm_resume(struct device *dev) 212 { 213 struct pci_dev *pdev = to_pci_dev(dev); 214 struct drm_device *drm_dev = pci_get_drvdata(pdev); 215 216 pci_set_power_state(pdev, PCI_D0); 217 pci_restore_state(pdev); 218 if (pci_enable_device(pdev)) { 219 return -EIO; 220 } 221 222 return qxl_drm_resume(drm_dev, false); 223 } 224 225 static int qxl_pm_thaw(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_resume(drm_dev, true); 231 } 232 233 static int qxl_pm_freeze(struct device *dev) 234 { 235 struct pci_dev *pdev = to_pci_dev(dev); 236 struct drm_device *drm_dev = pci_get_drvdata(pdev); 237 238 return qxl_drm_freeze(drm_dev); 239 } 240 241 static int qxl_pm_restore(struct device *dev) 242 { 243 struct pci_dev *pdev = to_pci_dev(dev); 244 struct drm_device *drm_dev = pci_get_drvdata(pdev); 245 struct qxl_device *qdev = drm_dev->dev_private; 246 247 qxl_io_reset(qdev); 248 return qxl_drm_resume(drm_dev, false); 249 } 250 251 static const struct dev_pm_ops qxl_pm_ops = { 252 .suspend = qxl_pm_suspend, 253 .resume = qxl_pm_resume, 254 .freeze = qxl_pm_freeze, 255 .thaw = qxl_pm_thaw, 256 .poweroff = qxl_pm_freeze, 257 .restore = qxl_pm_restore, 258 }; 259 static struct pci_driver qxl_pci_driver = { 260 .name = DRIVER_NAME, 261 .id_table = pciidlist, 262 .probe = qxl_pci_probe, 263 .remove = qxl_pci_remove, 264 .driver.pm = &qxl_pm_ops, 265 }; 266 267 static struct drm_driver qxl_driver = { 268 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | 269 DRIVER_ATOMIC, 270 271 .dumb_create = qxl_mode_dumb_create, 272 .dumb_map_offset = qxl_mode_dumb_mmap, 273 #if defined(CONFIG_DEBUG_FS) 274 .debugfs_init = qxl_debugfs_init, 275 #endif 276 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 277 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 278 .gem_prime_export = drm_gem_prime_export, 279 .gem_prime_import = drm_gem_prime_import, 280 .gem_prime_pin = qxl_gem_prime_pin, 281 .gem_prime_unpin = qxl_gem_prime_unpin, 282 .gem_prime_get_sg_table = qxl_gem_prime_get_sg_table, 283 .gem_prime_import_sg_table = qxl_gem_prime_import_sg_table, 284 .gem_prime_vmap = qxl_gem_prime_vmap, 285 .gem_prime_vunmap = qxl_gem_prime_vunmap, 286 .gem_prime_mmap = qxl_gem_prime_mmap, 287 .gem_free_object_unlocked = qxl_gem_object_free, 288 .gem_open_object = qxl_gem_object_open, 289 .gem_close_object = qxl_gem_object_close, 290 .fops = &qxl_fops, 291 .ioctls = qxl_ioctls, 292 .irq_handler = qxl_irq_handler, 293 .name = DRIVER_NAME, 294 .desc = DRIVER_DESC, 295 .date = DRIVER_DATE, 296 .major = 0, 297 .minor = 1, 298 .patchlevel = 0, 299 }; 300 301 static int __init qxl_init(void) 302 { 303 if (vgacon_text_force() && qxl_modeset == -1) 304 return -EINVAL; 305 306 if (qxl_modeset == 0) 307 return -EINVAL; 308 qxl_driver.num_ioctls = qxl_max_ioctls; 309 return pci_register_driver(&qxl_pci_driver); 310 } 311 312 static void __exit qxl_exit(void) 313 { 314 pci_unregister_driver(&qxl_pci_driver); 315 } 316 317 module_init(qxl_init); 318 module_exit(qxl_exit); 319 320 MODULE_AUTHOR(DRIVER_AUTHOR); 321 MODULE_DESCRIPTION(DRIVER_DESC); 322 MODULE_LICENSE("GPL and additional rights"); 323