diff options
Diffstat (limited to 'drivers/gpu/drm/drm_pci.c')
| -rw-r--r-- | drivers/gpu/drm/drm_pci.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c index 2ea9ad4a8d69..e20f78b542a7 100644 --- a/drivers/gpu/drm/drm_pci.c +++ b/drivers/gpu/drm/drm_pci.c @@ -124,4 +124,147 @@ void drm_pci_free(struct drm_device * dev, drm_dma_handle_t * dmah) EXPORT_SYMBOL(drm_pci_free); +#ifdef CONFIG_PCI +/** + * Register. + * + * \param pdev - PCI device structure + * \param ent entry from the PCI ID table with device type flags + * \return zero on success or a negative number on failure. + * + * Attempt to gets inter module "drm" information. If we are first + * then register the character device and inter module information. + * Try and register, if we fail to register, backout previous work. + */ +int drm_get_pci_dev(struct pci_dev *pdev, const struct pci_device_id *ent, + struct drm_driver *driver) +{ + struct drm_device *dev; + int ret; + + DRM_DEBUG("\n"); + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) + return -ENOMEM; + + ret = pci_enable_device(pdev); + if (ret) + goto err_g1; + + pci_set_master(pdev); + + dev->pdev = pdev; + dev->dev = &pdev->dev; + + dev->pci_device = pdev->device; + dev->pci_vendor = pdev->vendor; + +#ifdef __alpha__ + dev->hose = pdev->sysdata; +#endif + + if ((ret = drm_fill_in_dev(dev, ent, driver))) { + printk(KERN_ERR "DRM: Fill_in_dev failed.\n"); + goto err_g2; + } + + if (drm_core_check_feature(dev, DRIVER_MODESET)) { + pci_set_drvdata(pdev, dev); + ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL); + if (ret) + goto err_g2; + } + + if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY))) + goto err_g3; + + if (dev->driver->load) { + ret = dev->driver->load(dev, ent->driver_data); + if (ret) + goto err_g4; + } + + /* setup the grouping for the legacy output */ + if (drm_core_check_feature(dev, DRIVER_MODESET)) { + ret = drm_mode_group_init_legacy_group(dev, + &dev->primary->mode_group); + if (ret) + goto err_g4; + } + + list_add_tail(&dev->driver_item, &driver->device_list); + + DRM_INFO("Initialized %s %d.%d.%d %s for %s on minor %d\n", + driver->name, driver->major, driver->minor, driver->patchlevel, + driver->date, pci_name(pdev), dev->primary->index); + + return 0; + +err_g4: + drm_put_minor(&dev->primary); +err_g3: + if (drm_core_check_feature(dev, DRIVER_MODESET)) + drm_put_minor(&dev->control); +err_g2: + pci_disable_device(pdev); +err_g1: + kfree(dev); + return ret; +} +EXPORT_SYMBOL(drm_get_pci_dev); + +/** + * PCI device initialization. Called via drm_init at module load time, + * + * \return zero on success or a negative number on failure. + * + * Initializes a drm_device structures,registering the + * stubs and initializing the AGP device. + * + * Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and + * after the initialization for driver customization. + */ +int drm_pci_init(struct drm_driver *driver) +{ + struct pci_dev *pdev = NULL; + const struct pci_device_id *pid; + int i; + + if (driver->driver_features & DRIVER_MODESET) + return pci_register_driver(&driver->pci_driver); + + /* If not using KMS, fall back to stealth mode manual scanning. */ + for (i = 0; driver->pci_driver.id_table[i].vendor != 0; i++) { + pid = &driver->pci_driver.id_table[i]; + + /* Loop around setting up a DRM device for each PCI device + * matching our ID and device class. If we had the internal + * function that pci_get_subsys and pci_get_class used, we'd + * be able to just pass pid in instead of doing a two-stage + * thing. + */ + pdev = NULL; + while ((pdev = + pci_get_subsys(pid->vendor, pid->device, pid->subvendor, + pid->subdevice, pdev)) != NULL) { + if ((pdev->class & pid->class_mask) != pid->class) + continue; + + /* stealth mode requires a manual probe */ + pci_dev_get(pdev); + drm_get_pci_dev(pdev, pid, driver); + } + } + return 0; +} + +#else + +int drm_pci_init(struct drm_driver *driver) +{ + return -1; +} + +#endif /*@}*/ |