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_atomic_helper.h> 38 #include <drm/drm_drv.h> 39 #include <drm/drm_file.h> 40 #include <drm/drm_modeset_helper.h> 41 #include <drm/drm_prime.h> 42 #include <drm/drm_probe_helper.h> 43 44 #include "qxl_object.h" 45 46 static const struct pci_device_id pciidlist[] = { 47 { 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, 48 0xffff00, 0 }, 49 { 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_OTHER << 8, 50 0xffff00, 0 }, 51 { 0, 0, 0 }, 52 }; 53 MODULE_DEVICE_TABLE(pci, pciidlist); 54 55 static int qxl_modeset = -1; 56 int qxl_num_crtc = 4; 57 58 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting"); 59 module_param_named(modeset, qxl_modeset, int, 0400); 60 61 MODULE_PARM_DESC(num_heads, "Number of virtual crtcs to expose (default 4)"); 62 module_param_named(num_heads, qxl_num_crtc, int, 0400); 63 64 static struct drm_driver qxl_driver; 65 static struct pci_driver qxl_pci_driver; 66 67 static bool is_vga(struct pci_dev *pdev) 68 { 69 return pdev->class == PCI_CLASS_DISPLAY_VGA << 8; 70 } 71 72 static int 73 qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 74 { 75 struct qxl_device *qdev; 76 int ret; 77 78 if (pdev->revision < 4) { 79 DRM_ERROR("qxl too old, doesn't support client_monitors_config," 80 " use xf86-video-qxl in user mode"); 81 return -EINVAL; /* TODO: ENODEV ? */ 82 } 83 84 qdev = kzalloc(sizeof(struct qxl_device), GFP_KERNEL); 85 if (!qdev) 86 return -ENOMEM; 87 88 ret = pci_enable_device(pdev); 89 if (ret) 90 goto free_dev; 91 92 ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, "qxl"); 93 if (ret) 94 goto disable_pci; 95 96 if (is_vga(pdev)) { 97 ret = vga_get_interruptible(pdev, VGA_RSRC_LEGACY_IO); 98 if (ret) { 99 DRM_ERROR("can't get legacy vga ioports\n"); 100 goto disable_pci; 101 } 102 } 103 104 ret = qxl_device_init(qdev, &qxl_driver, pdev); 105 if (ret) 106 goto put_vga; 107 108 ret = qxl_modeset_init(qdev); 109 if (ret) 110 goto unload; 111 112 drm_kms_helper_poll_init(&qdev->ddev); 113 114 /* Complete initialization. */ 115 ret = drm_dev_register(&qdev->ddev, ent->driver_data); 116 if (ret) 117 goto modeset_cleanup; 118 119 drm_fbdev_generic_setup(&qdev->ddev, 32); 120 return 0; 121 122 modeset_cleanup: 123 qxl_modeset_fini(qdev); 124 unload: 125 qxl_device_fini(qdev); 126 put_vga: 127 if (is_vga(pdev)) 128 vga_put(pdev, VGA_RSRC_LEGACY_IO); 129 disable_pci: 130 pci_disable_device(pdev); 131 free_dev: 132 kfree(qdev); 133 return ret; 134 } 135 136 static void qxl_drm_release(struct drm_device *dev) 137 { 138 struct qxl_device *qdev = dev->dev_private; 139 140 /* 141 * TODO: qxl_device_fini() call should be in qxl_pci_remove(), 142 * reodering qxl_modeset_fini() + qxl_device_fini() calls is 143 * non-trivial though. 144 */ 145 qxl_modeset_fini(qdev); 146 qxl_device_fini(qdev); 147 dev->dev_private = NULL; 148 kfree(qdev); 149 } 150 151 static void 152 qxl_pci_remove(struct pci_dev *pdev) 153 { 154 struct drm_device *dev = pci_get_drvdata(pdev); 155 156 drm_dev_unregister(dev); 157 drm_atomic_helper_shutdown(dev); 158 if (is_vga(pdev)) 159 vga_put(pdev, VGA_RSRC_LEGACY_IO); 160 drm_dev_put(dev); 161 } 162 163 DEFINE_DRM_GEM_FOPS(qxl_fops); 164 165 static int qxl_drm_freeze(struct drm_device *dev) 166 { 167 struct pci_dev *pdev = dev->pdev; 168 struct qxl_device *qdev = dev->dev_private; 169 int ret; 170 171 ret = drm_mode_config_helper_suspend(dev); 172 if (ret) 173 return ret; 174 175 qxl_destroy_monitors_object(qdev); 176 qxl_surf_evict(qdev); 177 qxl_vram_evict(qdev); 178 179 while (!qxl_check_idle(qdev->command_ring)); 180 while (!qxl_check_idle(qdev->release_ring)) 181 qxl_queue_garbage_collect(qdev, 1); 182 183 pci_save_state(pdev); 184 185 return 0; 186 } 187 188 static int qxl_drm_resume(struct drm_device *dev, bool thaw) 189 { 190 struct qxl_device *qdev = dev->dev_private; 191 192 qdev->ram_header->int_mask = QXL_INTERRUPT_MASK; 193 if (!thaw) { 194 qxl_reinit_memslots(qdev); 195 qxl_ring_init_hdr(qdev->release_ring); 196 } 197 198 qxl_create_monitors_object(qdev); 199 return drm_mode_config_helper_resume(dev); 200 } 201 202 static int qxl_pm_suspend(struct device *dev) 203 { 204 struct pci_dev *pdev = to_pci_dev(dev); 205 struct drm_device *drm_dev = pci_get_drvdata(pdev); 206 int error; 207 208 error = qxl_drm_freeze(drm_dev); 209 if (error) 210 return error; 211 212 pci_disable_device(pdev); 213 pci_set_power_state(pdev, PCI_D3hot); 214 return 0; 215 } 216 217 static int qxl_pm_resume(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 pci_set_power_state(pdev, PCI_D0); 223 pci_restore_state(pdev); 224 if (pci_enable_device(pdev)) { 225 return -EIO; 226 } 227 228 return qxl_drm_resume(drm_dev, false); 229 } 230 231 static int qxl_pm_thaw(struct device *dev) 232 { 233 struct drm_device *drm_dev = dev_get_drvdata(dev); 234 235 return qxl_drm_resume(drm_dev, true); 236 } 237 238 static int qxl_pm_freeze(struct device *dev) 239 { 240 struct drm_device *drm_dev = dev_get_drvdata(dev); 241 242 return qxl_drm_freeze(drm_dev); 243 } 244 245 static int qxl_pm_restore(struct device *dev) 246 { 247 struct pci_dev *pdev = to_pci_dev(dev); 248 struct drm_device *drm_dev = pci_get_drvdata(pdev); 249 struct qxl_device *qdev = drm_dev->dev_private; 250 251 qxl_io_reset(qdev); 252 return qxl_drm_resume(drm_dev, false); 253 } 254 255 static const struct dev_pm_ops qxl_pm_ops = { 256 .suspend = qxl_pm_suspend, 257 .resume = qxl_pm_resume, 258 .freeze = qxl_pm_freeze, 259 .thaw = qxl_pm_thaw, 260 .poweroff = qxl_pm_freeze, 261 .restore = qxl_pm_restore, 262 }; 263 static struct pci_driver qxl_pci_driver = { 264 .name = DRIVER_NAME, 265 .id_table = pciidlist, 266 .probe = qxl_pci_probe, 267 .remove = qxl_pci_remove, 268 .driver.pm = &qxl_pm_ops, 269 }; 270 271 static struct drm_driver qxl_driver = { 272 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, 273 274 .dumb_create = qxl_mode_dumb_create, 275 .dumb_map_offset = qxl_mode_dumb_mmap, 276 #if defined(CONFIG_DEBUG_FS) 277 .debugfs_init = qxl_debugfs_init, 278 #endif 279 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 280 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 281 .gem_prime_import_sg_table = qxl_gem_prime_import_sg_table, 282 .gem_prime_mmap = qxl_gem_prime_mmap, 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 .release = qxl_drm_release, 294 }; 295 296 static int __init qxl_init(void) 297 { 298 if (vgacon_text_force() && qxl_modeset == -1) 299 return -EINVAL; 300 301 if (qxl_modeset == 0) 302 return -EINVAL; 303 qxl_driver.num_ioctls = qxl_max_ioctls; 304 return pci_register_driver(&qxl_pci_driver); 305 } 306 307 static void __exit qxl_exit(void) 308 { 309 pci_unregister_driver(&qxl_pci_driver); 310 } 311 312 module_init(qxl_init); 313 module_exit(qxl_exit); 314 315 MODULE_AUTHOR(DRIVER_AUTHOR); 316 MODULE_DESCRIPTION(DRIVER_DESC); 317 MODULE_LICENSE("GPL and additional rights"); 318