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/aperture.h> 33 #include <linux/module.h> 34 #include <linux/pci.h> 35 #include <linux/vgaarb.h> 36 37 #include <drm/drm.h> 38 #include <drm/drm_atomic_helper.h> 39 #include <drm/drm_client_setup.h> 40 #include <drm/drm_drv.h> 41 #include <drm/drm_fbdev_ttm.h> 42 #include <drm/drm_file.h> 43 #include <drm/drm_gem_ttm_helper.h> 44 #include <drm/drm_module.h> 45 #include <drm/drm_modeset_helper.h> 46 #include <drm/drm_prime.h> 47 #include <drm/drm_probe_helper.h> 48 49 #include "qxl_object.h" 50 51 static const struct pci_device_id pciidlist[] = { 52 { 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, 53 0xffff00, 0 }, 54 { 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_OTHER << 8, 55 0xffff00, 0 }, 56 { 0, 0, 0 }, 57 }; 58 MODULE_DEVICE_TABLE(pci, pciidlist); 59 60 static int qxl_modeset = -1; 61 int qxl_num_crtc = 4; 62 63 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting"); 64 module_param_named(modeset, qxl_modeset, int, 0400); 65 66 MODULE_PARM_DESC(num_heads, "Number of virtual crtcs to expose (default 4)"); 67 module_param_named(num_heads, qxl_num_crtc, int, 0400); 68 69 static struct drm_driver qxl_driver; 70 static struct pci_driver qxl_pci_driver; 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 = aperture_remove_conflicting_pci_devices(pdev, qxl_driver.name); 96 if (ret) 97 goto disable_pci; 98 99 if (pci_is_vga(pdev) && pdev->revision < 5) { 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_client_setup(&qdev->ddev, NULL); 123 return 0; 124 125 modeset_cleanup: 126 qxl_modeset_fini(qdev); 127 unload: 128 qxl_device_fini(qdev); 129 put_vga: 130 if (pci_is_vga(pdev) && pdev->revision < 5) 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 * reordering 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 (pci_is_vga(pdev) && pdev->revision < 5) 159 vga_put(pdev, VGA_RSRC_LEGACY_IO); 160 } 161 162 static void 163 qxl_pci_shutdown(struct pci_dev *pdev) 164 { 165 drm_atomic_helper_shutdown(pci_get_drvdata(pdev)); 166 } 167 168 DEFINE_DRM_GEM_FOPS(qxl_fops); 169 170 static int qxl_drm_freeze(struct drm_device *dev) 171 { 172 struct pci_dev *pdev = to_pci_dev(dev->dev); 173 struct qxl_device *qdev = to_qxl(dev); 174 int ret; 175 176 ret = drm_mode_config_helper_suspend(dev); 177 if (ret) 178 return ret; 179 180 qxl_destroy_monitors_object(qdev); 181 qxl_surf_evict(qdev); 182 qxl_vram_evict(qdev); 183 184 while (!qxl_check_idle(qdev->command_ring)); 185 while (!qxl_check_idle(qdev->release_ring)) 186 qxl_queue_garbage_collect(qdev, 1); 187 188 pci_save_state(pdev); 189 190 return 0; 191 } 192 193 static int qxl_drm_resume(struct drm_device *dev, bool thaw) 194 { 195 struct qxl_device *qdev = to_qxl(dev); 196 197 qdev->ram_header->int_mask = QXL_INTERRUPT_MASK; 198 if (!thaw) { 199 qxl_reinit_memslots(qdev); 200 } 201 202 qxl_create_monitors_object(qdev); 203 return drm_mode_config_helper_resume(dev); 204 } 205 206 static int qxl_pm_suspend(struct device *dev) 207 { 208 struct pci_dev *pdev = to_pci_dev(dev); 209 struct drm_device *drm_dev = pci_get_drvdata(pdev); 210 int error; 211 212 error = qxl_drm_freeze(drm_dev); 213 if (error) 214 return error; 215 216 pci_disable_device(pdev); 217 pci_set_power_state(pdev, PCI_D3hot); 218 return 0; 219 } 220 221 static int qxl_pm_resume(struct device *dev) 222 { 223 struct pci_dev *pdev = to_pci_dev(dev); 224 struct drm_device *drm_dev = pci_get_drvdata(pdev); 225 struct qxl_device *qdev = to_qxl(drm_dev); 226 227 pci_set_power_state(pdev, PCI_D0); 228 pci_restore_state(pdev); 229 if (pci_enable_device(pdev)) { 230 return -EIO; 231 } 232 233 qxl_io_reset(qdev); 234 return qxl_drm_resume(drm_dev, false); 235 } 236 237 static int qxl_pm_thaw(struct device *dev) 238 { 239 struct drm_device *drm_dev = dev_get_drvdata(dev); 240 241 return qxl_drm_resume(drm_dev, true); 242 } 243 244 static int qxl_pm_freeze(struct device *dev) 245 { 246 struct drm_device *drm_dev = dev_get_drvdata(dev); 247 248 return qxl_drm_freeze(drm_dev); 249 } 250 251 static int qxl_pm_restore(struct device *dev) 252 { 253 struct pci_dev *pdev = to_pci_dev(dev); 254 struct drm_device *drm_dev = pci_get_drvdata(pdev); 255 struct qxl_device *qdev = to_qxl(drm_dev); 256 257 qxl_io_reset(qdev); 258 return qxl_drm_resume(drm_dev, false); 259 } 260 261 static const struct dev_pm_ops qxl_pm_ops = { 262 .suspend = qxl_pm_suspend, 263 .resume = qxl_pm_resume, 264 .freeze = qxl_pm_freeze, 265 .thaw = qxl_pm_thaw, 266 .poweroff = qxl_pm_freeze, 267 .restore = qxl_pm_restore, 268 }; 269 static struct pci_driver qxl_pci_driver = { 270 .name = DRIVER_NAME, 271 .id_table = pciidlist, 272 .probe = qxl_pci_probe, 273 .remove = qxl_pci_remove, 274 .shutdown = qxl_pci_shutdown, 275 .driver.pm = &qxl_pm_ops, 276 }; 277 278 static const struct drm_ioctl_desc qxl_ioctls[] = { 279 DRM_IOCTL_DEF_DRV(QXL_ALLOC, qxl_alloc_ioctl, DRM_AUTH), 280 DRM_IOCTL_DEF_DRV(QXL_MAP, qxl_map_ioctl, DRM_AUTH), 281 DRM_IOCTL_DEF_DRV(QXL_EXECBUFFER, qxl_execbuffer_ioctl, DRM_AUTH), 282 DRM_IOCTL_DEF_DRV(QXL_UPDATE_AREA, qxl_update_area_ioctl, DRM_AUTH), 283 DRM_IOCTL_DEF_DRV(QXL_GETPARAM, qxl_getparam_ioctl, DRM_AUTH), 284 DRM_IOCTL_DEF_DRV(QXL_CLIENTCAP, qxl_clientcap_ioctl, DRM_AUTH), 285 DRM_IOCTL_DEF_DRV(QXL_ALLOC_SURF, qxl_alloc_surf_ioctl, DRM_AUTH), 286 }; 287 288 static struct drm_driver qxl_driver = { 289 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC | DRIVER_CURSOR_HOTSPOT, 290 291 .dumb_create = qxl_mode_dumb_create, 292 .dumb_map_offset = drm_gem_ttm_dumb_map_offset, 293 #if defined(CONFIG_DEBUG_FS) 294 .debugfs_init = qxl_debugfs_init, 295 #endif 296 .gem_prime_import_sg_table = qxl_gem_prime_import_sg_table, 297 DRM_FBDEV_TTM_DRIVER_OPS, 298 .fops = &qxl_fops, 299 .ioctls = qxl_ioctls, 300 .num_ioctls = ARRAY_SIZE(qxl_ioctls), 301 .name = DRIVER_NAME, 302 .desc = DRIVER_DESC, 303 .date = DRIVER_DATE, 304 .major = 0, 305 .minor = 1, 306 .patchlevel = 0, 307 308 .release = qxl_drm_release, 309 }; 310 311 drm_module_pci_driver_if_modeset(qxl_pci_driver, qxl_modeset); 312 313 MODULE_AUTHOR(DRIVER_AUTHOR); 314 MODULE_DESCRIPTION(DRIVER_DESC); 315 MODULE_LICENSE("GPL and additional rights"); 316