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 = devm_drm_dev_alloc(&pdev->dev, &qxl_driver, 85 struct qxl_device, ddev); 86 if (IS_ERR(qdev)) { 87 pr_err("Unable to init drm dev"); 88 return -ENOMEM; 89 } 90 91 ret = pci_enable_device(pdev); 92 if (ret) 93 return ret; 94 95 ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, "qxl"); 96 if (ret) 97 goto disable_pci; 98 99 if (is_vga(pdev)) { 100 ret = vga_get_interruptible(pdev, VGA_RSRC_LEGACY_IO); 101 if (ret) { 102 DRM_ERROR("can't get legacy vga ioports\n"); 103 goto disable_pci; 104 } 105 } 106 107 ret = qxl_device_init(qdev, pdev); 108 if (ret) 109 goto put_vga; 110 111 ret = qxl_modeset_init(qdev); 112 if (ret) 113 goto unload; 114 115 drm_kms_helper_poll_init(&qdev->ddev); 116 117 /* Complete initialization. */ 118 ret = drm_dev_register(&qdev->ddev, ent->driver_data); 119 if (ret) 120 goto modeset_cleanup; 121 122 drm_fbdev_generic_setup(&qdev->ddev, 32); 123 return 0; 124 125 modeset_cleanup: 126 qxl_modeset_fini(qdev); 127 unload: 128 qxl_device_fini(qdev); 129 put_vga: 130 if (is_vga(pdev)) 131 vga_put(pdev, VGA_RSRC_LEGACY_IO); 132 disable_pci: 133 pci_disable_device(pdev); 134 135 return ret; 136 } 137 138 static void qxl_drm_release(struct drm_device *dev) 139 { 140 struct qxl_device *qdev = to_qxl(dev); 141 142 /* 143 * TODO: qxl_device_fini() call should be in qxl_pci_remove(), 144 * reodering qxl_modeset_fini() + qxl_device_fini() calls is 145 * non-trivial though. 146 */ 147 qxl_modeset_fini(qdev); 148 qxl_device_fini(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 } 161 162 DEFINE_DRM_GEM_FOPS(qxl_fops); 163 164 static int qxl_drm_freeze(struct drm_device *dev) 165 { 166 struct pci_dev *pdev = dev->pdev; 167 struct qxl_device *qdev = to_qxl(dev); 168 int ret; 169 170 ret = drm_mode_config_helper_suspend(dev); 171 if (ret) 172 return ret; 173 174 qxl_destroy_monitors_object(qdev); 175 qxl_surf_evict(qdev); 176 qxl_vram_evict(qdev); 177 178 while (!qxl_check_idle(qdev->command_ring)); 179 while (!qxl_check_idle(qdev->release_ring)) 180 qxl_queue_garbage_collect(qdev, 1); 181 182 pci_save_state(pdev); 183 184 return 0; 185 } 186 187 static int qxl_drm_resume(struct drm_device *dev, bool thaw) 188 { 189 struct qxl_device *qdev = to_qxl(dev); 190 191 qdev->ram_header->int_mask = QXL_INTERRUPT_MASK; 192 if (!thaw) { 193 qxl_reinit_memslots(qdev); 194 qxl_ring_init_hdr(qdev->release_ring); 195 } 196 197 qxl_create_monitors_object(qdev); 198 return drm_mode_config_helper_resume(dev); 199 } 200 201 static int qxl_pm_suspend(struct device *dev) 202 { 203 struct pci_dev *pdev = to_pci_dev(dev); 204 struct drm_device *drm_dev = pci_get_drvdata(pdev); 205 int error; 206 207 error = qxl_drm_freeze(drm_dev); 208 if (error) 209 return error; 210 211 pci_disable_device(pdev); 212 pci_set_power_state(pdev, PCI_D3hot); 213 return 0; 214 } 215 216 static int qxl_pm_resume(struct device *dev) 217 { 218 struct pci_dev *pdev = to_pci_dev(dev); 219 struct drm_device *drm_dev = pci_get_drvdata(pdev); 220 221 pci_set_power_state(pdev, PCI_D0); 222 pci_restore_state(pdev); 223 if (pci_enable_device(pdev)) { 224 return -EIO; 225 } 226 227 return qxl_drm_resume(drm_dev, false); 228 } 229 230 static int qxl_pm_thaw(struct device *dev) 231 { 232 struct drm_device *drm_dev = dev_get_drvdata(dev); 233 234 return qxl_drm_resume(drm_dev, true); 235 } 236 237 static int qxl_pm_freeze(struct device *dev) 238 { 239 struct drm_device *drm_dev = dev_get_drvdata(dev); 240 241 return qxl_drm_freeze(drm_dev); 242 } 243 244 static int qxl_pm_restore(struct device *dev) 245 { 246 struct pci_dev *pdev = to_pci_dev(dev); 247 struct drm_device *drm_dev = pci_get_drvdata(pdev); 248 struct qxl_device *qdev = to_qxl(drm_dev); 249 250 qxl_io_reset(qdev); 251 return qxl_drm_resume(drm_dev, false); 252 } 253 254 static const struct dev_pm_ops qxl_pm_ops = { 255 .suspend = qxl_pm_suspend, 256 .resume = qxl_pm_resume, 257 .freeze = qxl_pm_freeze, 258 .thaw = qxl_pm_thaw, 259 .poweroff = qxl_pm_freeze, 260 .restore = qxl_pm_restore, 261 }; 262 static struct pci_driver qxl_pci_driver = { 263 .name = DRIVER_NAME, 264 .id_table = pciidlist, 265 .probe = qxl_pci_probe, 266 .remove = qxl_pci_remove, 267 .driver.pm = &qxl_pm_ops, 268 }; 269 270 static struct drm_driver qxl_driver = { 271 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, 272 273 .dumb_create = qxl_mode_dumb_create, 274 .dumb_map_offset = qxl_mode_dumb_mmap, 275 #if defined(CONFIG_DEBUG_FS) 276 .debugfs_init = qxl_debugfs_init, 277 #endif 278 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 279 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 280 .gem_prime_import_sg_table = qxl_gem_prime_import_sg_table, 281 .gem_prime_mmap = qxl_gem_prime_mmap, 282 .fops = &qxl_fops, 283 .ioctls = qxl_ioctls, 284 .irq_handler = qxl_irq_handler, 285 .name = DRIVER_NAME, 286 .desc = DRIVER_DESC, 287 .date = DRIVER_DATE, 288 .major = 0, 289 .minor = 1, 290 .patchlevel = 0, 291 292 .release = qxl_drm_release, 293 }; 294 295 static int __init qxl_init(void) 296 { 297 if (vgacon_text_force() && qxl_modeset == -1) 298 return -EINVAL; 299 300 if (qxl_modeset == 0) 301 return -EINVAL; 302 qxl_driver.num_ioctls = qxl_max_ioctls; 303 return pci_register_driver(&qxl_pci_driver); 304 } 305 306 static void __exit qxl_exit(void) 307 { 308 pci_unregister_driver(&qxl_pci_driver); 309 } 310 311 module_init(qxl_init); 312 module_exit(qxl_exit); 313 314 MODULE_AUTHOR(DRIVER_AUTHOR); 315 MODULE_DESCRIPTION(DRIVER_DESC); 316 MODULE_LICENSE("GPL and additional rights"); 317