1 /* $NetBSD: qxl_drv.c,v 1.5 2021/12/18 23:45:42 riastradh Exp $ */ 2 3 /* vim: set ts=8 sw=8 tw=78 ai noexpandtab */ 4 /* qxl_drv.c -- QXL driver -*- linux-c -*- 5 * 6 * Copyright 2011 Red Hat, Inc. 7 * All Rights Reserved. 8 * 9 * Permission is hereby granted, free of charge, to any person obtaining a 10 * copy of this software and associated documentation files (the "Software"), 11 * to deal in the Software without restriction, including without limitation 12 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 13 * and/or sell copies of the Software, and to permit persons to whom the 14 * Software is furnished to do so, subject to the following conditions: 15 * 16 * The above copyright notice and this permission notice (including the next 17 * paragraph) shall be included in all copies or substantial portions of the 18 * Software. 19 * 20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 23 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 24 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 25 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 26 * OTHER DEALINGS IN THE SOFTWARE. 27 * 28 * Authors: 29 * Dave Airlie <airlie (at) redhat.com> 30 * Alon Levy <alevy (at) redhat.com> 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: qxl_drv.c,v 1.5 2021/12/18 23:45:42 riastradh Exp $"); 35 36 #include "qxl_drv.h" 37 #include <linux/console.h> 38 #include <linux/module.h> 39 #include <linux/pci.h> 40 41 #include <drm/drm.h> 42 #include <drm/drm_drv.h> 43 #include <drm/drm_file.h> 44 #include <drm/drm_modeset_helper.h> 45 #include <drm/drm_prime.h> 46 #include <drm/drm_probe_helper.h> 47 48 #include "qxl_object.h" 49 50 static const struct pci_device_id pciidlist[] = { 51 { 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, 52 0xffff00, 0 }, 53 { 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_OTHER << 8, 54 0xffff00, 0 }, 55 { 0, 0, 0 }, 56 }; 57 MODULE_DEVICE_TABLE(pci, pciidlist); 58 59 static int qxl_modeset = -1; 60 int qxl_num_crtc = 4; 61 62 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting"); 63 module_param_named(modeset, qxl_modeset, int, 0400); 64 65 MODULE_PARM_DESC(num_heads, "Number of virtual crtcs to expose (default 4)"); 66 module_param_named(num_heads, qxl_num_crtc, int, 0400); 67 68 static struct drm_driver qxl_driver; 69 static struct pci_driver qxl_pci_driver; 70 71 static bool is_vga(struct pci_dev *pdev) 72 { 73 return pdev->class == PCI_CLASS_DISPLAY_VGA << 8; 74 } 75 76 static int 77 qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 78 { 79 struct qxl_device *qdev; 80 int ret; 81 82 if (pdev->revision < 4) { 83 DRM_ERROR("qxl too old, doesn't support client_monitors_config," 84 " use xf86-video-qxl in user mode"); 85 return -EINVAL; /* TODO: ENODEV ? */ 86 } 87 88 qdev = kzalloc(sizeof(struct qxl_device), GFP_KERNEL); 89 if (!qdev) 90 return -ENOMEM; 91 92 ret = pci_enable_device(pdev); 93 if (ret) 94 goto free_dev; 95 96 ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, "qxl"); 97 if (ret) 98 goto disable_pci; 99 100 if (is_vga(pdev)) { 101 ret = vga_get_interruptible(pdev, VGA_RSRC_LEGACY_IO); 102 if (ret) { 103 DRM_ERROR("can't get legacy vga ioports\n"); 104 goto disable_pci; 105 } 106 } 107 108 ret = qxl_device_init(qdev, &qxl_driver, pdev); 109 if (ret) 110 goto put_vga; 111 112 ret = qxl_modeset_init(qdev); 113 if (ret) 114 goto unload; 115 116 drm_kms_helper_poll_init(&qdev->ddev); 117 118 /* Complete initialization. */ 119 ret = drm_dev_register(&qdev->ddev, ent->driver_data); 120 if (ret) 121 goto modeset_cleanup; 122 123 drm_fbdev_generic_setup(&qdev->ddev, 32); 124 return 0; 125 126 modeset_cleanup: 127 qxl_modeset_fini(qdev); 128 unload: 129 qxl_device_fini(qdev); 130 put_vga: 131 if (is_vga(pdev)) 132 vga_put(pdev, VGA_RSRC_LEGACY_IO); 133 disable_pci: 134 pci_disable_device(pdev); 135 free_dev: 136 kfree(qdev); 137 return ret; 138 } 139 140 static void 141 qxl_pci_remove(struct pci_dev *pdev) 142 { 143 struct drm_device *dev = pci_get_drvdata(pdev); 144 struct qxl_device *qdev = dev->dev_private; 145 146 drm_dev_unregister(dev); 147 148 qxl_modeset_fini(qdev); 149 qxl_device_fini(qdev); 150 if (is_vga(pdev)) 151 vga_put(pdev, VGA_RSRC_LEGACY_IO); 152 153 dev->dev_private = NULL; 154 kfree(qdev); 155 drm_dev_put(dev); 156 } 157 158 DEFINE_DRM_GEM_FOPS(qxl_fops); 159 160 static int qxl_drm_freeze(struct drm_device *dev) 161 { 162 struct pci_dev *pdev = dev->pdev; 163 struct qxl_device *qdev = dev->dev_private; 164 int ret; 165 166 ret = drm_mode_config_helper_suspend(dev); 167 if (ret) 168 return ret; 169 170 qxl_destroy_monitors_object(qdev); 171 qxl_surf_evict(qdev); 172 qxl_vram_evict(qdev); 173 174 while (!qxl_check_idle(qdev->command_ring)); 175 while (!qxl_check_idle(qdev->release_ring)) 176 qxl_queue_garbage_collect(qdev, 1); 177 178 pci_save_state(pdev); 179 180 return 0; 181 } 182 183 static int qxl_drm_resume(struct drm_device *dev, bool thaw) 184 { 185 struct qxl_device *qdev = dev->dev_private; 186 187 qdev->ram_header->int_mask = QXL_INTERRUPT_MASK; 188 if (!thaw) { 189 qxl_reinit_memslots(qdev); 190 qxl_ring_init_hdr(qdev->release_ring); 191 } 192 193 qxl_create_monitors_object(qdev); 194 return drm_mode_config_helper_resume(dev); 195 } 196 197 static int qxl_pm_suspend(struct device *dev) 198 { 199 struct pci_dev *pdev = to_pci_dev(dev); 200 struct drm_device *drm_dev = pci_get_drvdata(pdev); 201 int error; 202 203 error = qxl_drm_freeze(drm_dev); 204 if (error) 205 return error; 206 207 pci_disable_device(pdev); 208 pci_set_power_state(pdev, PCI_D3hot); 209 return 0; 210 } 211 212 static int qxl_pm_resume(struct device *dev) 213 { 214 struct pci_dev *pdev = to_pci_dev(dev); 215 struct drm_device *drm_dev = pci_get_drvdata(pdev); 216 217 pci_set_power_state(pdev, PCI_D0); 218 pci_restore_state(pdev); 219 if (pci_enable_device(pdev)) { 220 return -EIO; 221 } 222 223 return qxl_drm_resume(drm_dev, false); 224 } 225 226 static int qxl_pm_thaw(struct device *dev) 227 { 228 struct drm_device *drm_dev = dev_get_drvdata(dev); 229 230 return qxl_drm_resume(drm_dev, true); 231 } 232 233 static int qxl_pm_freeze(struct device *dev) 234 { 235 struct drm_device *drm_dev = dev_get_drvdata(dev); 236 237 return qxl_drm_freeze(drm_dev); 238 } 239 240 static int qxl_pm_restore(struct device *dev) 241 { 242 struct pci_dev *pdev = to_pci_dev(dev); 243 struct drm_device *drm_dev = pci_get_drvdata(pdev); 244 struct qxl_device *qdev = drm_dev->dev_private; 245 246 qxl_io_reset(qdev); 247 return qxl_drm_resume(drm_dev, false); 248 } 249 250 static const struct dev_pm_ops qxl_pm_ops = { 251 .suspend = qxl_pm_suspend, 252 .resume = qxl_pm_resume, 253 .freeze = qxl_pm_freeze, 254 .thaw = qxl_pm_thaw, 255 .poweroff = qxl_pm_freeze, 256 .restore = qxl_pm_restore, 257 }; 258 static struct pci_driver qxl_pci_driver = { 259 .name = DRIVER_NAME, 260 .id_table = pciidlist, 261 .probe = qxl_pci_probe, 262 .remove = qxl_pci_remove, 263 .driver.pm = &qxl_pm_ops, 264 }; 265 266 static struct drm_driver qxl_driver = { 267 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, 268 269 .dumb_create = qxl_mode_dumb_create, 270 .dumb_map_offset = qxl_mode_dumb_mmap, 271 #if defined(CONFIG_DEBUG_FS) 272 .debugfs_init = qxl_debugfs_init, 273 #endif 274 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 275 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 276 .gem_prime_import_sg_table = qxl_gem_prime_import_sg_table, 277 .gem_prime_mmap = qxl_gem_prime_mmap, 278 .fops = &qxl_fops, 279 .ioctls = qxl_ioctls, 280 .irq_handler = qxl_irq_handler, 281 #ifdef __NetBSD__ 282 .request_irq = drm_pci_request_irq, 283 .free_irq = drm_pci_free_irq, 284 #endif 285 .name = DRIVER_NAME, 286 .desc = DRIVER_DESC, 287 .date = DRIVER_DATE, 288 .major = 0, 289 .minor = 1, 290 .patchlevel = 0, 291 }; 292 293 static int __init qxl_init(void) 294 { 295 if (vgacon_text_force() && qxl_modeset == -1) 296 return -EINVAL; 297 298 if (qxl_modeset == 0) 299 return -EINVAL; 300 qxl_driver.num_ioctls = qxl_max_ioctls; 301 return pci_register_driver(&qxl_pci_driver); 302 } 303 304 static void __exit qxl_exit(void) 305 { 306 pci_unregister_driver(&qxl_pci_driver); 307 } 308 309 module_init(qxl_init); 310 module_exit(qxl_exit); 311 312 MODULE_AUTHOR(DRIVER_AUTHOR); 313 MODULE_DESCRIPTION(DRIVER_DESC); 314 MODULE_LICENSE("GPL and additional rights"); 315
Indexes created Sat Sep 27 21:09:56 GMT 2025