1 /* qxl_drv.c -- QXL driver -*- linux-c -*- 2 * 3 * Copyright 2011 Red Hat, Inc. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the next 14 * paragraph) shall be included in all copies or substantial portions of the 15 * Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 23 * OTHER DEALINGS IN THE SOFTWARE. 24 * 25 * Authors: 26 * Dave Airlie <airlie@redhat.com> 27 * Alon Levy <alevy@redhat.com> 28 */ 29 30 #include "qxl_drv.h" 31 #include <linux/console.h> 32 #include <linux/module.h> 33 #include <linux/pci.h> 34 35 #include <drm/drm.h> 36 #include <drm/drm_atomic_helper.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 = devm_drm_dev_alloc(&pdev->dev, &qxl_driver, 84 struct qxl_device, ddev); 85 if (IS_ERR(qdev)) { 86 pr_err("Unable to init drm dev"); 87 return -ENOMEM; 88 } 89 90 ret = pci_enable_device(pdev); 91 if (ret) 92 return ret; 93 94 ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, "qxl"); 95 if (ret) 96 goto disable_pci; 97 98 if (is_vga(pdev) && pdev->revision < 5) { 99 ret = vga_get_interruptible(pdev, VGA_RSRC_LEGACY_IO); 100 if (ret) { 101 DRM_ERROR("can't get legacy vga ioports\n"); 102 goto disable_pci; 103 } 104 } 105 106 ret = qxl_device_init(qdev, pdev); 107 if (ret) 108 goto put_vga; 109 110 ret = qxl_modeset_init(qdev); 111 if (ret) 112 goto unload; 113 114 drm_kms_helper_poll_init(&qdev->ddev); 115 116 /* Complete initialization. */ 117 ret = drm_dev_register(&qdev->ddev, ent->driver_data); 118 if (ret) 119 goto modeset_cleanup; 120 121 drm_fbdev_generic_setup(&qdev->ddev, 32); 122 return 0; 123 124 modeset_cleanup: 125 qxl_modeset_fini(qdev); 126 unload: 127 qxl_device_fini(qdev); 128 put_vga: 129 if (is_vga(pdev) && pdev->revision < 5) 130 vga_put(pdev, VGA_RSRC_LEGACY_IO); 131 disable_pci: 132 pci_disable_device(pdev); 133 134 return ret; 135 } 136 137 static void qxl_drm_release(struct drm_device *dev) 138 { 139 struct qxl_device *qdev = to_qxl(dev); 140 141 /* 142 * TODO: qxl_device_fini() call should be in qxl_pci_remove(), 143 * reordering qxl_modeset_fini() + qxl_device_fini() calls is 144 * non-trivial though. 145 */ 146 qxl_modeset_fini(qdev); 147 qxl_device_fini(qdev); 148 } 149 150 static void 151 qxl_pci_remove(struct pci_dev *pdev) 152 { 153 struct drm_device *dev = pci_get_drvdata(pdev); 154 155 drm_dev_unregister(dev); 156 drm_atomic_helper_shutdown(dev); 157 if (is_vga(pdev) && pdev->revision < 5) 158 vga_put(pdev, VGA_RSRC_LEGACY_IO); 159 } 160 161 DEFINE_DRM_GEM_FOPS(qxl_fops); 162 163 static int qxl_drm_freeze(struct drm_device *dev) 164 { 165 struct pci_dev *pdev = to_pci_dev(dev->dev); 166 struct qxl_device *qdev = to_qxl(dev); 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 = to_qxl(dev); 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 = to_qxl(drm_dev); 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_import_sg_table = qxl_gem_prime_import_sg_table, 280 .gem_prime_mmap = qxl_gem_prime_mmap, 281 .fops = &qxl_fops, 282 .ioctls = qxl_ioctls, 283 .irq_handler = qxl_irq_handler, 284 .name = DRIVER_NAME, 285 .desc = DRIVER_DESC, 286 .date = DRIVER_DATE, 287 .major = 0, 288 .minor = 1, 289 .patchlevel = 0, 290 291 .release = qxl_drm_release, 292 }; 293 294 static int __init qxl_init(void) 295 { 296 if (vgacon_text_force() && qxl_modeset == -1) 297 return -EINVAL; 298 299 if (qxl_modeset == 0) 300 return -EINVAL; 301 qxl_driver.num_ioctls = qxl_max_ioctls; 302 return pci_register_driver(&qxl_pci_driver); 303 } 304 305 static void __exit qxl_exit(void) 306 { 307 pci_unregister_driver(&qxl_pci_driver); 308 } 309 310 module_init(qxl_init); 311 module_exit(qxl_exit); 312 313 MODULE_AUTHOR(DRIVER_AUTHOR); 314 MODULE_DESCRIPTION(DRIVER_DESC); 315 MODULE_LICENSE("GPL and additional rights"); 316