/* $Id: vbox_drv.c 71947 2018-04-20 14:59:20Z vboxsync $ */ /** @file * VirtualBox Additions Linux kernel video driver */ /* * Copyright (C) 2013-2017 Oracle Corporation * This file is based on ast_drv.c * Copyright 2012 Red Hat Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE * USE OR OTHER DEALINGS IN THE SOFTWARE. * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * * Authors: Dave Airlie * Michael Thayer */ #include "vbox_drv.h" #include "version-generated.h" #include "revision-generated.h" #include #include #include #include #include int vbox_modeset = -1; MODULE_PARM_DESC(modeset, "Disable/Enable modesetting"); module_param_named(modeset, vbox_modeset, int, 0400); static struct drm_driver driver; static const struct pci_device_id pciidlist[] = { { 0x80ee, 0xbeef, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, { 0, 0, 0}, }; MODULE_DEVICE_TABLE(pci, pciidlist); static int vbox_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { return drm_get_pci_dev(pdev, ent, &driver); } static void vbox_pci_remove(struct pci_dev *pdev) { struct drm_device *dev = pci_get_drvdata(pdev); drm_put_dev(dev); } static int vbox_drm_freeze(struct drm_device *dev) { drm_kms_helper_poll_disable(dev); pci_save_state(dev->pdev); console_lock(); vbox_fbdev_set_suspend(dev, 1); console_unlock(); return 0; } static int vbox_drm_thaw(struct drm_device *dev) { drm_mode_config_reset(dev); drm_helper_resume_force_mode(dev); console_lock(); vbox_fbdev_set_suspend(dev, 0); console_unlock(); return 0; } static int vbox_drm_resume(struct drm_device *dev) { int ret; if (pci_enable_device(dev->pdev)) return -EIO; ret = vbox_drm_thaw(dev); if (ret) return ret; drm_kms_helper_poll_enable(dev); return 0; } static int vbox_pm_suspend(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct drm_device *ddev = pci_get_drvdata(pdev); int error; error = vbox_drm_freeze(ddev); if (error) return error; pci_disable_device(pdev); pci_set_power_state(pdev, PCI_D3hot); return 0; } static int vbox_pm_resume(struct device *dev) { struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev)); return vbox_drm_resume(ddev); } static int vbox_pm_freeze(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct drm_device *ddev = pci_get_drvdata(pdev); if (!ddev || !ddev->dev_private) return -ENODEV; return vbox_drm_freeze(ddev); } static int vbox_pm_thaw(struct device *dev) { struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev)); return vbox_drm_thaw(ddev); } static int vbox_pm_poweroff(struct device *dev) { struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev)); return vbox_drm_freeze(ddev); } static const struct dev_pm_ops vbox_pm_ops = { .suspend = vbox_pm_suspend, .resume = vbox_pm_resume, .freeze = vbox_pm_freeze, .thaw = vbox_pm_thaw, .poweroff = vbox_pm_poweroff, .restore = vbox_pm_resume, }; static struct pci_driver vbox_pci_driver = { .name = DRIVER_NAME, .id_table = pciidlist, .probe = vbox_pci_probe, .remove = vbox_pci_remove, .driver.pm = &vbox_pm_ops, }; #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0) && !defined(RHEL_74) /* This works around a bug in X servers prior to 1.18.4, which sometimes * submit more dirty rectangles than the kernel is willing to handle and * then disable dirty rectangle handling altogether when they see the * EINVAL error. I do not want the code to hang around forever, which is * why I am limiting it to certain kernel versions. We can increase the * limit if some distributions uses old X servers with new kernels. */ long vbox_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { long rc = drm_ioctl(filp, cmd, arg); if (cmd == DRM_IOCTL_MODE_DIRTYFB && rc == -EINVAL) return -EOVERFLOW; return rc; } #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0) && !RHEL_74 */ static const struct file_operations vbox_fops = { .owner = THIS_MODULE, .open = drm_open, .release = drm_release, #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0) && !defined(RHEL_74) .unlocked_ioctl = vbox_ioctl, #else .unlocked_ioctl = drm_ioctl, #endif .mmap = vbox_mmap, .poll = drm_poll, #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0) && !defined(RHEL_73) .fasync = drm_fasync, #endif #ifdef CONFIG_COMPAT .compat_ioctl = drm_compat_ioctl, #endif .read = drm_read, }; static int vbox_master_set(struct drm_device *dev, struct drm_file *file_priv, bool from_open) { struct vbox_private *vbox = dev->dev_private; /* * We do not yet know whether the new owner can handle hotplug, so we * do not advertise dynamic modes on the first query and send a * tentative hotplug notification after that to see if they query again. */ vbox->initial_mode_queried = false; mutex_lock(&vbox->hw_mutex); /* * Disable VBVA when someone releases master in case the next person * tries tries to do VESA. */ /** @todo work out if anyone is likely to and whether it will work. */ /* * Update: we also disable it because if the new master does not do * dirty rectangle reporting (e.g. old versions of Plymouth) then at * least the first screen will still be updated. We enable it as soon * as we receive a dirty rectangle report. */ vbox_disable_accel(vbox); mutex_unlock(&vbox->hw_mutex); return 0; } #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 8, 0) && !defined(RHEL_74) static void vbox_master_drop(struct drm_device *dev, struct drm_file *file_priv, bool from_release) #else static void vbox_master_drop(struct drm_device *dev, struct drm_file *file_priv) #endif { struct vbox_private *vbox = dev->dev_private; /* See vbox_master_set() */ vbox->initial_mode_queried = false; mutex_lock(&vbox->hw_mutex); vbox_disable_accel(vbox); mutex_unlock(&vbox->hw_mutex); } static struct drm_driver driver = { .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_PRIME, .dev_priv_size = 0, .load = vbox_driver_load, .unload = vbox_driver_unload, .lastclose = vbox_driver_lastclose, .master_set = vbox_master_set, .master_drop = vbox_master_drop, #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 18, 0) || defined(RHEL_73) # if LINUX_VERSION_CODE < KERNEL_VERSION(4, 14, 0) && !defined(RHEL_75) .set_busid = drm_pci_set_busid, # endif #endif .fops = &vbox_fops, .irq_handler = vbox_irq_handler, .name = DRIVER_NAME, .desc = DRIVER_DESC, .date = DRIVER_DATE, .major = DRIVER_MAJOR, .minor = DRIVER_MINOR, .patchlevel = DRIVER_PATCHLEVEL, .gem_free_object = vbox_gem_free_object, .dumb_create = vbox_dumb_create, .dumb_map_offset = vbox_dumb_mmap_offset, #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0) && !defined(RHEL_73) .dumb_destroy = vbox_dumb_destroy, #else .dumb_destroy = drm_gem_dumb_destroy, #endif .prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, .gem_prime_export = drm_gem_prime_export, .gem_prime_import = drm_gem_prime_import, .gem_prime_pin = vbox_gem_prime_pin, .gem_prime_unpin = vbox_gem_prime_unpin, .gem_prime_get_sg_table = vbox_gem_prime_get_sg_table, .gem_prime_import_sg_table = vbox_gem_prime_import_sg_table, .gem_prime_vmap = vbox_gem_prime_vmap, .gem_prime_vunmap = vbox_gem_prime_vunmap, .gem_prime_mmap = vbox_gem_prime_mmap, }; static int __init vbox_init(void) { #if defined(CONFIG_VGA_CONSOLE) || LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0) if (vgacon_text_force() && vbox_modeset == -1) return -EINVAL; #endif if (vbox_modeset == 0) return -EINVAL; return pci_register_driver(&vbox_pci_driver); } static void __exit vbox_exit(void) { pci_unregister_driver(&vbox_pci_driver); } module_init(vbox_init); module_exit(vbox_exit); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL and additional rights"); #ifdef MODULE_VERSION MODULE_VERSION(VBOX_VERSION_STRING " r" __stringify(VBOX_SVN_REV)); #endif