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, 0, "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 static const struct file_operations qxl_fops = { 154 .owner = THIS_MODULE, 155 .open = drm_open, 156 .release = drm_release, 157 .unlocked_ioctl = drm_ioctl, 158 .poll = drm_poll, 159 .read = drm_read, 160 .mmap = qxl_mmap, 161 }; 162 163 static int qxl_drm_freeze(struct drm_device *dev) 164 { 165 struct pci_dev *pdev = dev->pdev; 166 struct qxl_device *qdev = dev->dev_private; 167 int ret; 168 169 ret = drm_mode_config_helper_suspend(dev); 170 if (ret) 171 return ret; 172 173 qxl_destroy_monitors_object(qdev); 174 qxl_surf_evict(qdev); 175 qxl_vram_evict(qdev); 176 177 while (!qxl_check_idle(qdev->command_ring)); 178 while (!qxl_check_idle(qdev->release_ring)) 179 qxl_queue_garbage_collect(qdev, 1); 180 181 pci_save_state(pdev); 182 183 return 0; 184 } 185 186 static int qxl_drm_resume(struct drm_device *dev, bool thaw) 187 { 188 struct qxl_device *qdev = dev->dev_private; 189 190 qdev->ram_header->int_mask = QXL_INTERRUPT_MASK; 191 if (!thaw) { 192 qxl_reinit_memslots(qdev); 193 qxl_ring_init_hdr(qdev->release_ring); 194 } 195 196 qxl_create_monitors_object(qdev); 197 return drm_mode_config_helper_resume(dev); 198 } 199 200 static int qxl_pm_suspend(struct device *dev) 201 { 202 struct pci_dev *pdev = to_pci_dev(dev); 203 struct drm_device *drm_dev = pci_get_drvdata(pdev); 204 int error; 205 206 error = qxl_drm_freeze(drm_dev); 207 if (error) 208 return error; 209 210 pci_disable_device(pdev); 211 pci_set_power_state(pdev, PCI_D3hot); 212 return 0; 213 } 214 215 static int qxl_pm_resume(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 pci_set_power_state(pdev, PCI_D0); 221 pci_restore_state(pdev); 222 if (pci_enable_device(pdev)) { 223 return -EIO; 224 } 225 226 return qxl_drm_resume(drm_dev, false); 227 } 228 229 static int qxl_pm_thaw(struct device *dev) 230 { 231 struct drm_device *drm_dev = dev_get_drvdata(dev); 232 233 return qxl_drm_resume(drm_dev, true); 234 } 235 236 static int qxl_pm_freeze(struct device *dev) 237 { 238 struct drm_device *drm_dev = dev_get_drvdata(dev); 239 240 return qxl_drm_freeze(drm_dev); 241 } 242 243 static int qxl_pm_restore(struct device *dev) 244 { 245 struct pci_dev *pdev = to_pci_dev(dev); 246 struct drm_device *drm_dev = pci_get_drvdata(pdev); 247 struct qxl_device *qdev = drm_dev->dev_private; 248 249 qxl_io_reset(qdev); 250 return qxl_drm_resume(drm_dev, false); 251 } 252 253 static const struct dev_pm_ops qxl_pm_ops = { 254 .suspend = qxl_pm_suspend, 255 .resume = qxl_pm_resume, 256 .freeze = qxl_pm_freeze, 257 .thaw = qxl_pm_thaw, 258 .poweroff = qxl_pm_freeze, 259 .restore = qxl_pm_restore, 260 }; 261 static struct pci_driver qxl_pci_driver = { 262 .name = DRIVER_NAME, 263 .id_table = pciidlist, 264 .probe = qxl_pci_probe, 265 .remove = qxl_pci_remove, 266 .driver.pm = &qxl_pm_ops, 267 }; 268 269 static struct drm_driver qxl_driver = { 270 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, 271 272 .dumb_create = qxl_mode_dumb_create, 273 .dumb_map_offset = qxl_mode_dumb_mmap, 274 #if defined(CONFIG_DEBUG_FS) 275 .debugfs_init = qxl_debugfs_init, 276 #endif 277 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 278 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 279 .gem_prime_pin = qxl_gem_prime_pin, 280 .gem_prime_unpin = qxl_gem_prime_unpin, 281 .gem_prime_get_sg_table = qxl_gem_prime_get_sg_table, 282 .gem_prime_import_sg_table = qxl_gem_prime_import_sg_table, 283 .gem_prime_vmap = qxl_gem_prime_vmap, 284 .gem_prime_vunmap = qxl_gem_prime_vunmap, 285 .gem_prime_mmap = qxl_gem_prime_mmap, 286 .gem_free_object_unlocked = qxl_gem_object_free, 287 .gem_open_object = qxl_gem_object_open, 288 .gem_close_object = qxl_gem_object_close, 289 .fops = &qxl_fops, 290 .ioctls = qxl_ioctls, 291 .irq_handler = qxl_irq_handler, 292 .name = DRIVER_NAME, 293 .desc = DRIVER_DESC, 294 .date = DRIVER_DATE, 295 .major = 0, 296 .minor = 1, 297 .patchlevel = 0, 298 }; 299 300 static int __init qxl_init(void) 301 { 302 if (vgacon_text_force() && qxl_modeset == -1) 303 return -EINVAL; 304 305 if (qxl_modeset == 0) 306 return -EINVAL; 307 qxl_driver.num_ioctls = qxl_max_ioctls; 308 return pci_register_driver(&qxl_pci_driver); 309 } 310 311 static void __exit qxl_exit(void) 312 { 313 pci_unregister_driver(&qxl_pci_driver); 314 } 315 316 module_init(qxl_init); 317 module_exit(qxl_exit); 318 319 MODULE_AUTHOR(DRIVER_AUTHOR); 320 MODULE_DESCRIPTION(DRIVER_DESC); 321 MODULE_LICENSE("GPL and additional rights"); 322