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_fbdev_generic.h> 41 #include <drm/drm_file.h> 42 #include <drm/drm_gem_ttm_helper.h> 43 #include <drm/drm_module.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 = devm_drm_dev_alloc(&pdev->dev, &qxl_driver, 89 struct qxl_device, ddev); 90 if (IS_ERR(qdev)) { 91 pr_err("Unable to init drm dev"); 92 return -ENOMEM; 93 } 94 95 ret = pci_enable_device(pdev); 96 if (ret) 97 return ret; 98 99 ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &qxl_driver); 100 if (ret) 101 goto disable_pci; 102 103 if (is_vga(pdev) && pdev->revision < 5) { 104 ret = vga_get_interruptible(pdev, VGA_RSRC_LEGACY_IO); 105 if (ret) { 106 DRM_ERROR("can't get legacy vga ioports\n"); 107 goto disable_pci; 108 } 109 } 110 111 ret = qxl_device_init(qdev, pdev); 112 if (ret) 113 goto put_vga; 114 115 ret = qxl_modeset_init(qdev); 116 if (ret) 117 goto unload; 118 119 drm_kms_helper_poll_init(&qdev->ddev); 120 121 /* Complete initialization. */ 122 ret = drm_dev_register(&qdev->ddev, ent->driver_data); 123 if (ret) 124 goto modeset_cleanup; 125 126 drm_fbdev_generic_setup(&qdev->ddev, 32); 127 return 0; 128 129 modeset_cleanup: 130 qxl_modeset_fini(qdev); 131 unload: 132 qxl_device_fini(qdev); 133 put_vga: 134 if (is_vga(pdev) && pdev->revision < 5) 135 vga_put(pdev, VGA_RSRC_LEGACY_IO); 136 disable_pci: 137 pci_disable_device(pdev); 138 139 return ret; 140 } 141 142 static void qxl_drm_release(struct drm_device *dev) 143 { 144 struct qxl_device *qdev = to_qxl(dev); 145 146 /* 147 * TODO: qxl_device_fini() call should be in qxl_pci_remove(), 148 * reordering qxl_modeset_fini() + qxl_device_fini() calls is 149 * non-trivial though. 150 */ 151 qxl_modeset_fini(qdev); 152 qxl_device_fini(qdev); 153 } 154 155 static void 156 qxl_pci_remove(struct pci_dev *pdev) 157 { 158 struct drm_device *dev = pci_get_drvdata(pdev); 159 160 drm_dev_unregister(dev); 161 drm_atomic_helper_shutdown(dev); 162 if (is_vga(pdev) && pdev->revision < 5) 163 vga_put(pdev, VGA_RSRC_LEGACY_IO); 164 } 165 166 DEFINE_DRM_GEM_FOPS(qxl_fops); 167 168 static int qxl_drm_freeze(struct drm_device *dev) 169 { 170 struct pci_dev *pdev = to_pci_dev(dev->dev); 171 struct qxl_device *qdev = to_qxl(dev); 172 int ret; 173 174 ret = drm_mode_config_helper_suspend(dev); 175 if (ret) 176 return ret; 177 178 qxl_destroy_monitors_object(qdev); 179 qxl_surf_evict(qdev); 180 qxl_vram_evict(qdev); 181 182 while (!qxl_check_idle(qdev->command_ring)); 183 while (!qxl_check_idle(qdev->release_ring)) 184 qxl_queue_garbage_collect(qdev, 1); 185 186 pci_save_state(pdev); 187 188 return 0; 189 } 190 191 static int qxl_drm_resume(struct drm_device *dev, bool thaw) 192 { 193 struct qxl_device *qdev = to_qxl(dev); 194 195 qdev->ram_header->int_mask = QXL_INTERRUPT_MASK; 196 if (!thaw) { 197 qxl_reinit_memslots(qdev); 198 } 199 200 qxl_create_monitors_object(qdev); 201 return drm_mode_config_helper_resume(dev); 202 } 203 204 static int qxl_pm_suspend(struct device *dev) 205 { 206 struct pci_dev *pdev = to_pci_dev(dev); 207 struct drm_device *drm_dev = pci_get_drvdata(pdev); 208 int error; 209 210 error = qxl_drm_freeze(drm_dev); 211 if (error) 212 return error; 213 214 pci_disable_device(pdev); 215 pci_set_power_state(pdev, PCI_D3hot); 216 return 0; 217 } 218 219 static int qxl_pm_resume(struct device *dev) 220 { 221 struct pci_dev *pdev = to_pci_dev(dev); 222 struct drm_device *drm_dev = pci_get_drvdata(pdev); 223 struct qxl_device *qdev = to_qxl(drm_dev); 224 225 pci_set_power_state(pdev, PCI_D0); 226 pci_restore_state(pdev); 227 if (pci_enable_device(pdev)) { 228 return -EIO; 229 } 230 231 qxl_io_reset(qdev); 232 return qxl_drm_resume(drm_dev, false); 233 } 234 235 static int qxl_pm_thaw(struct device *dev) 236 { 237 struct drm_device *drm_dev = dev_get_drvdata(dev); 238 239 return qxl_drm_resume(drm_dev, true); 240 } 241 242 static int qxl_pm_freeze(struct device *dev) 243 { 244 struct drm_device *drm_dev = dev_get_drvdata(dev); 245 246 return qxl_drm_freeze(drm_dev); 247 } 248 249 static int qxl_pm_restore(struct device *dev) 250 { 251 struct pci_dev *pdev = to_pci_dev(dev); 252 struct drm_device *drm_dev = pci_get_drvdata(pdev); 253 struct qxl_device *qdev = to_qxl(drm_dev); 254 255 qxl_io_reset(qdev); 256 return qxl_drm_resume(drm_dev, false); 257 } 258 259 static const struct dev_pm_ops qxl_pm_ops = { 260 .suspend = qxl_pm_suspend, 261 .resume = qxl_pm_resume, 262 .freeze = qxl_pm_freeze, 263 .thaw = qxl_pm_thaw, 264 .poweroff = qxl_pm_freeze, 265 .restore = qxl_pm_restore, 266 }; 267 static struct pci_driver qxl_pci_driver = { 268 .name = DRIVER_NAME, 269 .id_table = pciidlist, 270 .probe = qxl_pci_probe, 271 .remove = qxl_pci_remove, 272 .driver.pm = &qxl_pm_ops, 273 }; 274 275 static const struct drm_ioctl_desc qxl_ioctls[] = { 276 DRM_IOCTL_DEF_DRV(QXL_ALLOC, qxl_alloc_ioctl, DRM_AUTH), 277 DRM_IOCTL_DEF_DRV(QXL_MAP, qxl_map_ioctl, DRM_AUTH), 278 DRM_IOCTL_DEF_DRV(QXL_EXECBUFFER, qxl_execbuffer_ioctl, DRM_AUTH), 279 DRM_IOCTL_DEF_DRV(QXL_UPDATE_AREA, qxl_update_area_ioctl, DRM_AUTH), 280 DRM_IOCTL_DEF_DRV(QXL_GETPARAM, qxl_getparam_ioctl, DRM_AUTH), 281 DRM_IOCTL_DEF_DRV(QXL_CLIENTCAP, qxl_clientcap_ioctl, DRM_AUTH), 282 DRM_IOCTL_DEF_DRV(QXL_ALLOC_SURF, qxl_alloc_surf_ioctl, DRM_AUTH), 283 }; 284 285 static struct drm_driver qxl_driver = { 286 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC | DRIVER_CURSOR_HOTSPOT, 287 288 .dumb_create = qxl_mode_dumb_create, 289 .dumb_map_offset = drm_gem_ttm_dumb_map_offset, 290 #if defined(CONFIG_DEBUG_FS) 291 .debugfs_init = qxl_debugfs_init, 292 #endif 293 .gem_prime_import_sg_table = qxl_gem_prime_import_sg_table, 294 .fops = &qxl_fops, 295 .ioctls = qxl_ioctls, 296 .num_ioctls = ARRAY_SIZE(qxl_ioctls), 297 .name = DRIVER_NAME, 298 .desc = DRIVER_DESC, 299 .date = DRIVER_DATE, 300 .major = 0, 301 .minor = 1, 302 .patchlevel = 0, 303 304 .release = qxl_drm_release, 305 }; 306 307 drm_module_pci_driver_if_modeset(qxl_pci_driver, qxl_modeset); 308 309 MODULE_AUTHOR(DRIVER_AUTHOR); 310 MODULE_DESCRIPTION(DRIVER_DESC); 311 MODULE_LICENSE("GPL and additional rights"); 312