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 32 #include <linux/module.h> 33 #include <linux/pci.h> 34 #include <linux/vgaarb.h> 35 36 #include <drm/drm.h> 37 #include <drm/drm_aperture.h> 38 #include <drm/drm_atomic_helper.h> 39 #include <drm/drm_drv.h> 40 #include <drm/drm_file.h> 41 #include <drm/drm_gem_ttm_helper.h> 42 #include <drm/drm_modeset_helper.h> 43 #include <drm/drm_prime.h> 44 #include <drm/drm_probe_helper.h> 45 46 #include "qxl_object.h" 47 48 static const struct pci_device_id pciidlist[] = { 49 { 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, 50 0xffff00, 0 }, 51 { 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_OTHER << 8, 52 0xffff00, 0 }, 53 { 0, 0, 0 }, 54 }; 55 MODULE_DEVICE_TABLE(pci, pciidlist); 56 57 static int qxl_modeset = -1; 58 int qxl_num_crtc = 4; 59 60 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting"); 61 module_param_named(modeset, qxl_modeset, int, 0400); 62 63 MODULE_PARM_DESC(num_heads, "Number of virtual crtcs to expose (default 4)"); 64 module_param_named(num_heads, qxl_num_crtc, int, 0400); 65 66 static struct drm_driver qxl_driver; 67 static struct pci_driver qxl_pci_driver; 68 69 static bool is_vga(struct pci_dev *pdev) 70 { 71 return pdev->class == PCI_CLASS_DISPLAY_VGA << 8; 72 } 73 74 static int 75 qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 76 { 77 struct qxl_device *qdev; 78 int ret; 79 80 if (pdev->revision < 4) { 81 DRM_ERROR("qxl too old, doesn't support client_monitors_config," 82 " use xf86-video-qxl in user mode"); 83 return -EINVAL; /* TODO: ENODEV ? */ 84 } 85 86 qdev = devm_drm_dev_alloc(&pdev->dev, &qxl_driver, 87 struct qxl_device, ddev); 88 if (IS_ERR(qdev)) { 89 pr_err("Unable to init drm dev"); 90 return -ENOMEM; 91 } 92 93 ret = pci_enable_device(pdev); 94 if (ret) 95 return ret; 96 97 ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &qxl_driver); 98 if (ret) 99 goto disable_pci; 100 101 if (is_vga(pdev) && pdev->revision < 5) { 102 ret = vga_get_interruptible(pdev, VGA_RSRC_LEGACY_IO); 103 if (ret) { 104 DRM_ERROR("can't get legacy vga ioports\n"); 105 goto disable_pci; 106 } 107 } 108 109 ret = qxl_device_init(qdev, pdev); 110 if (ret) 111 goto put_vga; 112 113 ret = qxl_modeset_init(qdev); 114 if (ret) 115 goto unload; 116 117 drm_kms_helper_poll_init(&qdev->ddev); 118 119 /* Complete initialization. */ 120 ret = drm_dev_register(&qdev->ddev, ent->driver_data); 121 if (ret) 122 goto modeset_cleanup; 123 124 drm_fbdev_generic_setup(&qdev->ddev, 32); 125 return 0; 126 127 modeset_cleanup: 128 qxl_modeset_fini(qdev); 129 unload: 130 qxl_device_fini(qdev); 131 put_vga: 132 if (is_vga(pdev) && pdev->revision < 5) 133 vga_put(pdev, VGA_RSRC_LEGACY_IO); 134 disable_pci: 135 pci_disable_device(pdev); 136 137 return ret; 138 } 139 140 static void qxl_drm_release(struct drm_device *dev) 141 { 142 struct qxl_device *qdev = to_qxl(dev); 143 144 /* 145 * TODO: qxl_device_fini() call should be in qxl_pci_remove(), 146 * reordering qxl_modeset_fini() + qxl_device_fini() calls is 147 * non-trivial though. 148 */ 149 qxl_modeset_fini(qdev); 150 qxl_device_fini(qdev); 151 } 152 153 static void 154 qxl_pci_remove(struct pci_dev *pdev) 155 { 156 struct drm_device *dev = pci_get_drvdata(pdev); 157 158 drm_dev_unregister(dev); 159 drm_atomic_helper_shutdown(dev); 160 if (is_vga(pdev) && pdev->revision < 5) 161 vga_put(pdev, VGA_RSRC_LEGACY_IO); 162 } 163 164 DEFINE_DRM_GEM_FOPS(qxl_fops); 165 166 static int qxl_drm_freeze(struct drm_device *dev) 167 { 168 struct pci_dev *pdev = to_pci_dev(dev->dev); 169 struct qxl_device *qdev = to_qxl(dev); 170 int ret; 171 172 ret = drm_mode_config_helper_suspend(dev); 173 if (ret) 174 return ret; 175 176 qxl_destroy_monitors_object(qdev); 177 qxl_surf_evict(qdev); 178 qxl_vram_evict(qdev); 179 180 while (!qxl_check_idle(qdev->command_ring)); 181 while (!qxl_check_idle(qdev->release_ring)) 182 qxl_queue_garbage_collect(qdev, 1); 183 184 pci_save_state(pdev); 185 186 return 0; 187 } 188 189 static int qxl_drm_resume(struct drm_device *dev, bool thaw) 190 { 191 struct qxl_device *qdev = to_qxl(dev); 192 193 qdev->ram_header->int_mask = QXL_INTERRUPT_MASK; 194 if (!thaw) { 195 qxl_reinit_memslots(qdev); 196 qxl_ring_init_hdr(qdev->release_ring); 197 } 198 199 qxl_create_monitors_object(qdev); 200 return drm_mode_config_helper_resume(dev); 201 } 202 203 static int qxl_pm_suspend(struct device *dev) 204 { 205 struct pci_dev *pdev = to_pci_dev(dev); 206 struct drm_device *drm_dev = pci_get_drvdata(pdev); 207 int error; 208 209 error = qxl_drm_freeze(drm_dev); 210 if (error) 211 return error; 212 213 pci_disable_device(pdev); 214 pci_set_power_state(pdev, PCI_D3hot); 215 return 0; 216 } 217 218 static int qxl_pm_resume(struct device *dev) 219 { 220 struct pci_dev *pdev = to_pci_dev(dev); 221 struct drm_device *drm_dev = pci_get_drvdata(pdev); 222 223 pci_set_power_state(pdev, PCI_D0); 224 pci_restore_state(pdev); 225 if (pci_enable_device(pdev)) { 226 return -EIO; 227 } 228 229 return qxl_drm_resume(drm_dev, false); 230 } 231 232 static int qxl_pm_thaw(struct device *dev) 233 { 234 struct drm_device *drm_dev = dev_get_drvdata(dev); 235 236 return qxl_drm_resume(drm_dev, true); 237 } 238 239 static int qxl_pm_freeze(struct device *dev) 240 { 241 struct drm_device *drm_dev = dev_get_drvdata(dev); 242 243 return qxl_drm_freeze(drm_dev); 244 } 245 246 static int qxl_pm_restore(struct device *dev) 247 { 248 struct pci_dev *pdev = to_pci_dev(dev); 249 struct drm_device *drm_dev = pci_get_drvdata(pdev); 250 struct qxl_device *qdev = to_qxl(drm_dev); 251 252 qxl_io_reset(qdev); 253 return qxl_drm_resume(drm_dev, false); 254 } 255 256 static const struct dev_pm_ops qxl_pm_ops = { 257 .suspend = qxl_pm_suspend, 258 .resume = qxl_pm_resume, 259 .freeze = qxl_pm_freeze, 260 .thaw = qxl_pm_thaw, 261 .poweroff = qxl_pm_freeze, 262 .restore = qxl_pm_restore, 263 }; 264 static struct pci_driver qxl_pci_driver = { 265 .name = DRIVER_NAME, 266 .id_table = pciidlist, 267 .probe = qxl_pci_probe, 268 .remove = qxl_pci_remove, 269 .driver.pm = &qxl_pm_ops, 270 }; 271 272 static struct drm_driver qxl_driver = { 273 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, 274 275 .dumb_create = qxl_mode_dumb_create, 276 .dumb_map_offset = drm_gem_ttm_dumb_map_offset, 277 #if defined(CONFIG_DEBUG_FS) 278 .debugfs_init = qxl_debugfs_init, 279 #endif 280 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 281 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 282 .gem_prime_import_sg_table = qxl_gem_prime_import_sg_table, 283 .fops = &qxl_fops, 284 .ioctls = qxl_ioctls, 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 (drm_firmware_drivers_only() && 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