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_module.h> 43 #include <drm/drm_modeset_helper.h> 44 #include <drm/drm_prime.h> 45 #include <drm/drm_probe_helper.h> 46 47 #include "qxl_object.h" 48 49 static const struct pci_device_id pciidlist[] = { 50 { 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, 51 0xffff00, 0 }, 52 { 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_OTHER << 8, 53 0xffff00, 0 }, 54 { 0, 0, 0 }, 55 }; 56 MODULE_DEVICE_TABLE(pci, pciidlist); 57 58 static int qxl_modeset = -1; 59 int qxl_num_crtc = 4; 60 61 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting"); 62 module_param_named(modeset, qxl_modeset, int, 0400); 63 64 MODULE_PARM_DESC(num_heads, "Number of virtual crtcs to expose (default 4)"); 65 module_param_named(num_heads, qxl_num_crtc, int, 0400); 66 67 static struct drm_driver qxl_driver; 68 static struct pci_driver qxl_pci_driver; 69 70 static bool is_vga(struct pci_dev *pdev) 71 { 72 return pdev->class == PCI_CLASS_DISPLAY_VGA << 8; 73 } 74 75 static int 76 qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 77 { 78 struct qxl_device *qdev; 79 int ret; 80 81 if (pdev->revision < 4) { 82 DRM_ERROR("qxl too old, doesn't support client_monitors_config," 83 " use xf86-video-qxl in user mode"); 84 return -EINVAL; /* TODO: ENODEV ? */ 85 } 86 87 qdev = devm_drm_dev_alloc(&pdev->dev, &qxl_driver, 88 struct qxl_device, ddev); 89 if (IS_ERR(qdev)) { 90 pr_err("Unable to init drm dev"); 91 return -ENOMEM; 92 } 93 94 ret = pci_enable_device(pdev); 95 if (ret) 96 return ret; 97 98 ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &qxl_driver); 99 if (ret) 100 goto disable_pci; 101 102 if (is_vga(pdev) && pdev->revision < 5) { 103 ret = vga_get_interruptible(pdev, VGA_RSRC_LEGACY_IO); 104 if (ret) { 105 DRM_ERROR("can't get legacy vga ioports\n"); 106 goto disable_pci; 107 } 108 } 109 110 ret = qxl_device_init(qdev, pdev); 111 if (ret) 112 goto put_vga; 113 114 ret = qxl_modeset_init(qdev); 115 if (ret) 116 goto unload; 117 118 drm_kms_helper_poll_init(&qdev->ddev); 119 120 /* Complete initialization. */ 121 ret = drm_dev_register(&qdev->ddev, ent->driver_data); 122 if (ret) 123 goto modeset_cleanup; 124 125 drm_fbdev_generic_setup(&qdev->ddev, 32); 126 return 0; 127 128 modeset_cleanup: 129 qxl_modeset_fini(qdev); 130 unload: 131 qxl_device_fini(qdev); 132 put_vga: 133 if (is_vga(pdev) && pdev->revision < 5) 134 vga_put(pdev, VGA_RSRC_LEGACY_IO); 135 disable_pci: 136 pci_disable_device(pdev); 137 138 return ret; 139 } 140 141 static void qxl_drm_release(struct drm_device *dev) 142 { 143 struct qxl_device *qdev = to_qxl(dev); 144 145 /* 146 * TODO: qxl_device_fini() call should be in qxl_pci_remove(), 147 * reordering qxl_modeset_fini() + qxl_device_fini() calls is 148 * non-trivial though. 149 */ 150 qxl_modeset_fini(qdev); 151 qxl_device_fini(qdev); 152 } 153 154 static void 155 qxl_pci_remove(struct pci_dev *pdev) 156 { 157 struct drm_device *dev = pci_get_drvdata(pdev); 158 159 drm_dev_unregister(dev); 160 drm_atomic_helper_shutdown(dev); 161 if (is_vga(pdev) && pdev->revision < 5) 162 vga_put(pdev, VGA_RSRC_LEGACY_IO); 163 } 164 165 DEFINE_DRM_GEM_FOPS(qxl_fops); 166 167 static int qxl_drm_freeze(struct drm_device *dev) 168 { 169 struct pci_dev *pdev = to_pci_dev(dev->dev); 170 struct qxl_device *qdev = to_qxl(dev); 171 int ret; 172 173 ret = drm_mode_config_helper_suspend(dev); 174 if (ret) 175 return ret; 176 177 qxl_destroy_monitors_object(qdev); 178 qxl_surf_evict(qdev); 179 qxl_vram_evict(qdev); 180 181 while (!qxl_check_idle(qdev->command_ring)); 182 while (!qxl_check_idle(qdev->release_ring)) 183 qxl_queue_garbage_collect(qdev, 1); 184 185 pci_save_state(pdev); 186 187 return 0; 188 } 189 190 static int qxl_drm_resume(struct drm_device *dev, bool thaw) 191 { 192 struct qxl_device *qdev = to_qxl(dev); 193 194 qdev->ram_header->int_mask = QXL_INTERRUPT_MASK; 195 if (!thaw) { 196 qxl_reinit_memslots(qdev); 197 qxl_ring_init_hdr(qdev->release_ring); 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); 223 224 pci_set_power_state(pdev, PCI_D0); 225 pci_restore_state(pdev); 226 if (pci_enable_device(pdev)) { 227 return -EIO; 228 } 229 230 return qxl_drm_resume(drm_dev, false); 231 } 232 233 static int qxl_pm_thaw(struct device *dev) 234 { 235 struct drm_device *drm_dev = dev_get_drvdata(dev); 236 237 return qxl_drm_resume(drm_dev, true); 238 } 239 240 static int qxl_pm_freeze(struct device *dev) 241 { 242 struct drm_device *drm_dev = dev_get_drvdata(dev); 243 244 return qxl_drm_freeze(drm_dev); 245 } 246 247 static int qxl_pm_restore(struct device *dev) 248 { 249 struct pci_dev *pdev = to_pci_dev(dev); 250 struct drm_device *drm_dev = pci_get_drvdata(pdev); 251 struct qxl_device *qdev = to_qxl(drm_dev); 252 253 qxl_io_reset(qdev); 254 return qxl_drm_resume(drm_dev, false); 255 } 256 257 static const struct dev_pm_ops qxl_pm_ops = { 258 .suspend = qxl_pm_suspend, 259 .resume = qxl_pm_resume, 260 .freeze = qxl_pm_freeze, 261 .thaw = qxl_pm_thaw, 262 .poweroff = qxl_pm_freeze, 263 .restore = qxl_pm_restore, 264 }; 265 static struct pci_driver qxl_pci_driver = { 266 .name = DRIVER_NAME, 267 .id_table = pciidlist, 268 .probe = qxl_pci_probe, 269 .remove = qxl_pci_remove, 270 .driver.pm = &qxl_pm_ops, 271 }; 272 273 static const struct drm_ioctl_desc qxl_ioctls[] = { 274 DRM_IOCTL_DEF_DRV(QXL_ALLOC, qxl_alloc_ioctl, DRM_AUTH), 275 DRM_IOCTL_DEF_DRV(QXL_MAP, qxl_map_ioctl, DRM_AUTH), 276 DRM_IOCTL_DEF_DRV(QXL_EXECBUFFER, qxl_execbuffer_ioctl, DRM_AUTH), 277 DRM_IOCTL_DEF_DRV(QXL_UPDATE_AREA, qxl_update_area_ioctl, DRM_AUTH), 278 DRM_IOCTL_DEF_DRV(QXL_GETPARAM, qxl_getparam_ioctl, DRM_AUTH), 279 DRM_IOCTL_DEF_DRV(QXL_CLIENTCAP, qxl_clientcap_ioctl, DRM_AUTH), 280 DRM_IOCTL_DEF_DRV(QXL_ALLOC_SURF, qxl_alloc_surf_ioctl, DRM_AUTH), 281 }; 282 283 static struct drm_driver qxl_driver = { 284 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, 285 286 .dumb_create = qxl_mode_dumb_create, 287 .dumb_map_offset = drm_gem_ttm_dumb_map_offset, 288 #if defined(CONFIG_DEBUG_FS) 289 .debugfs_init = qxl_debugfs_init, 290 #endif 291 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 292 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 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