1 files changed, 452 insertions, 0 deletions
diff --git a/src/VBox/Additions/linux/drm/vbox_drv.c b/src/VBox/Additions/linux/drm/vbox_drv.c
new file mode 100644
index 00000000..cac22e94
--- /dev/null
+++ b/src/VBox/Additions/linux/drm/vbox_drv.c
@@ -0,0 +1,452 @@
+/*  $Id: vbox_drv.c $ */
+/** @file
+ * VirtualBox Additions Linux kernel video driver
+ */
+
+/*
+ * Copyright (C) 2013-2022 Oracle and/or its affiliates.
+ * 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 <airlied@redhat.com>
+ *          Michael Thayer <michael.thayer@oracle.com,
+ *          Hans de Goede <hdegoede@redhat.com>
+ */
+#include <linux/module.h>
+#include <linux/console.h>
+#include <linux/vt_kern.h>
+
+#include "vbox_drv.h"
+
+#include <drm/drm_crtc_helper.h>
+#if RTLNX_VER_MIN(5,1,0) || RTLNX_RHEL_MAJ_PREREQ(8,1)
+# include <drm/drm_probe_helper.h>
+#endif
+
+#if RTLNX_VER_MIN(5,14,0) || RTLNX_RHEL_RANGE(8,6, 8,99)
+# include <drm/drm_aperture.h>
+#endif
+
+#include "version-generated.h"
+#include "revision-generated.h"
+
+/** Detect whether kernel mode setting is OFF. */
+#if defined(CONFIG_VGA_CONSOLE)
+# if RTLNX_VER_MIN(5,17,0)
+#  define VBOX_VIDEO_NOMODESET() drm_firmware_drivers_only() && vbox_modeset == -1
+# elif RTLNX_VER_MIN(4,7,0)
+#  define VBOX_VIDEO_NOMODESET() vgacon_text_force() && vbox_modeset == -1
+# else /* < 4.7.0 */
+# define VBOX_VIDEO_NOMODESET() 0
+# endif /* < 4.7.0 */
+#else /* !CONFIG_VGA_CONSOLE */
+# define VBOX_VIDEO_NOMODESET() 0
+#endif /* !CONFIG_VGA_CONSOLE */
+
+static 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)
+{
+#if RTLNX_VER_MIN(4,19,0) || RTLNX_RHEL_MIN(8,3)
+	struct drm_device *dev = NULL;
+	int ret = 0;
+
+# if RTLNX_VER_MIN(5,14,0) || RTLNX_RHEL_RANGE(8,6, 8,99)
+#  if RTLNX_VER_MIN(5,15,0) || RTLNX_RHEL_RANGE(8,7, 8,99) || RTLNX_RHEL_MIN(9,1) || RTLNX_SUSE_MAJ_PREREQ(15,4)
+	ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &driver);
+#  else
+	ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, "vboxvideofb");
+#  endif
+	if (ret)
+	{
+		printk("unable to remove conflicting framebuffer devices\n");
+		return ret;
+	}
+# endif /* >= 5.14. */
+
+	dev = drm_dev_alloc(&driver, &pdev->dev);
+	if (IS_ERR(dev)) {
+		ret = PTR_ERR(dev);
+		goto err_drv_alloc;
+	}
+# if RTLNX_VER_MAX(5,14,0) && !RTLNX_RHEL_RANGE(8,6, 8,99)
+	dev->pdev = pdev;
+# endif
+	pci_set_drvdata(pdev, dev);
+
+	ret = vbox_driver_load(dev);
+	if (ret)
+		goto err_vbox_driver_load;
+
+	ret = drm_dev_register(dev, 0);
+	if (ret)
+		goto err_drv_dev_register;
+	return ret;
+
+err_drv_dev_register:
+	vbox_driver_unload(dev);
+err_vbox_driver_load:
+	drm_dev_put(dev);
+err_drv_alloc:
+	return ret;
+#else /* < 4.19.0 || RHEL < 8.3 */
+	return drm_get_pci_dev(pdev, ent, &driver);
+#endif
+}
+
+static void vbox_pci_remove(struct pci_dev *pdev)
+{
+	struct drm_device *dev = pci_get_drvdata(pdev);
+
+#if RTLNX_VER_MAX(4,19,0)
+	drm_put_dev(dev);
+#else
+	drm_dev_unregister(dev);
+	vbox_driver_unload(dev);
+	drm_dev_put(dev);
+#endif
+}
+
+#if RTLNX_VER_MAX(4,9,0) && !RTLNX_RHEL_MAJ_PREREQ(7,4)
+static void drm_fb_helper_set_suspend_unlocked(struct drm_fb_helper *fb_helper,
+					bool suspend)
+{
+	if (!fb_helper || !fb_helper->fbdev)
+		return;
+
+	console_lock();
+	fb_set_suspend(fb_helper->fbdev, suspend);
+	console_unlock();
+}
+#endif
+
+static int vbox_drm_freeze(struct drm_device *dev)
+{
+	struct vbox_private *vbox = dev->dev_private;
+
+	drm_kms_helper_poll_disable(dev);
+
+	pci_save_state(VBOX_DRM_TO_PCI_DEV(dev));
+
+	drm_fb_helper_set_suspend_unlocked(&vbox->fbdev->helper, true);
+
+	return 0;
+}
+
+static int vbox_drm_thaw(struct drm_device *dev)
+{
+	struct vbox_private *vbox = dev->dev_private;
+
+	drm_mode_config_reset(dev);
+	drm_helper_resume_force_mode(dev);
+	drm_fb_helper_set_suspend_unlocked(&vbox->fbdev->helper, false);
+
+	return 0;
+}
+
+static int vbox_drm_resume(struct drm_device *dev)
+{
+	int ret;
+
+	if (pci_enable_device(VBOX_DRM_TO_PCI_DEV(dev)))
+		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 RTLNX_VER_MAX(4,7,0) && !RTLNX_RHEL_MAJ_PREREQ(7,4)
+/* 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 /* RTLNX_VER_MAX(4,7,0) && !RTLNX_RHEL_MAJ_PREREQ(7,4) */
+
+static const struct file_operations vbox_fops = {
+	.owner = THIS_MODULE,
+	.open = drm_open,
+	.release = drm_release,
+#if RTLNX_VER_MAX(4,7,0) && !RTLNX_RHEL_MAJ_PREREQ(7,4)
+	.unlocked_ioctl = vbox_ioctl,
+#else
+	.unlocked_ioctl = drm_ioctl,
+#endif
+	.mmap = vbox_mmap,
+	.poll = drm_poll,
+#if RTLNX_VER_MAX(3,12,0) && !RTLNX_RHEL_MAJ_PREREQ(7,0)
+	.fasync = drm_fasync,
+#endif
+#ifdef CONFIG_COMPAT
+	.compat_ioctl = drm_compat_ioctl,
+#endif
+	.read = drm_read,
+};
+
+#if RTLNX_VER_MIN(5,9,0) || RTLNX_RHEL_MIN(8,4) || RTLNX_SUSE_MAJ_PREREQ(15,3)
+static void
+#else
+static int
+#endif
+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);
+	/* Start the refresh timer in case the user does not provide dirty
+	 * rectangles. */
+	vbox->need_refresh_timer = true;
+	schedule_delayed_work(&vbox->refresh_work, VBOX_REFRESH_PERIOD);
+	mutex_unlock(&vbox->hw_mutex);
+
+#if RTLNX_VER_MAX(5,9,0) && !RTLNX_RHEL_MAJ_PREREQ(8,4) && !RTLNX_SUSE_MAJ_PREREQ(15,3)
+	return 0;
+#endif
+}
+
+#if RTLNX_VER_MAX(4,8,0) && !RTLNX_RHEL_MAJ_PREREQ(7,4)
+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;
+	vbox_report_caps(vbox);
+
+	mutex_lock(&vbox->hw_mutex);
+	vbox->need_refresh_timer = false;
+	mutex_unlock(&vbox->hw_mutex);
+}
+
+static struct drm_driver driver = {
+#if RTLNX_VER_MAX(5,4,0) && !RTLNX_RHEL_MAJ_PREREQ(8,3) && !RTLNX_SUSE_MAJ_PREREQ(15,3)
+	.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_HAVE_IRQ |
+# if RTLNX_VER_MAX(5,1,0) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
+	    DRIVER_IRQ_SHARED |
+# endif
+	    DRIVER_PRIME,
+#else  /* >= 5.4.0 && RHEL >= 8.3 && SLES >= 15-SP3 */
+		.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_HAVE_IRQ,
+#endif /* <  5.4.0 */
+
+#if RTLNX_VER_MAX(4,19,0) && !RTLNX_RHEL_MAJ_PREREQ(8,3)
+	/* Legacy hooks, but still supported. */
+	.load = vbox_driver_load,
+	.unload = vbox_driver_unload,
+#endif
+	.lastclose = vbox_driver_lastclose,
+	.master_set = vbox_master_set,
+	.master_drop = vbox_master_drop,
+#if RTLNX_VER_MIN(3,18,0) || RTLNX_RHEL_MAJ_PREREQ(7,2)
+# if RTLNX_VER_MAX(4,14,0) && !RTLNX_RHEL_MAJ_PREREQ(7,5) && !RTLNX_SUSE_MAJ_PREREQ(15,1) && !RTLNX_SUSE_MAJ_PREREQ(12,5)
+	.set_busid = drm_pci_set_busid,
+# endif
+#endif
+
+	.fops = &vbox_fops,
+#if RTLNX_VER_MAX(5,15,0) && !RTLNX_RHEL_RANGE(8,7, 8,99) && !RTLNX_RHEL_MAJ_PREREQ(9,1)
+	.irq_handler = vbox_irq_handler,
+#endif
+	.name = DRIVER_NAME,
+	.desc = DRIVER_DESC,
+	.date = DRIVER_DATE,
+	.major = DRIVER_MAJOR,
+	.minor = DRIVER_MINOR,
+	.patchlevel = DRIVER_PATCHLEVEL,
+
+#if RTLNX_VER_MAX(4,7,0)
+	.gem_free_object = vbox_gem_free_object,
+#endif
+	.dumb_create = vbox_dumb_create,
+	.dumb_map_offset = vbox_dumb_mmap_offset,
+#if RTLNX_VER_MAX(3,12,0) && !RTLNX_RHEL_MAJ_PREREQ(7,3)
+	.dumb_destroy = vbox_dumb_destroy,
+#elif RTLNX_VER_MAX(5,12,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
+	.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_import = drm_gem_prime_import,
+	.gem_prime_import_sg_table = vbox_gem_prime_import_sg_table,
+	.gem_prime_mmap = vbox_gem_prime_mmap,
+
+#if RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
+	.dev_priv_size = 0,
+# if RTLNX_VER_MIN(4,7,0)
+	.gem_free_object_unlocked = vbox_gem_free_object,
+# endif
+	.gem_prime_export = drm_gem_prime_export,
+	.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_vmap = vbox_gem_prime_vmap,
+	.gem_prime_vunmap = vbox_gem_prime_vunmap,
+#endif
+};
+
+static int __init vbox_init(void)
+{
+	printk("vboxvideo: loading version " VBOX_VERSION_STRING " r" __stringify(VBOX_SVN_REV) "\n");
+	if (VBOX_VIDEO_NOMODESET())
+	{
+		printk("vboxvideo: kernel is running with *nomodeset* parameter,\n");
+		printk("vboxvideo: please consider either to remove it or load driver\n");
+		printk("vboxvideo: with parameter modeset=1, unloading\n");
+		return -EINVAL;
+	}
+
+	if (vbox_modeset == 0)
+	{
+		printk("vboxvideo: driver loaded with modeset=0 parameter, unloading\n");
+		return -EINVAL;
+	}
+
+#if RTLNX_VER_MIN(3,18,0) || RTLNX_RHEL_MAJ_PREREQ(7,3)
+	return pci_register_driver(&vbox_pci_driver);
+#else
+	return drm_pci_init(&driver, &vbox_pci_driver);
+#endif
+}
+
+static void __exit vbox_exit(void)
+{
+#if RTLNX_VER_MIN(3,18,0) || RTLNX_RHEL_MAJ_PREREQ(7,3)
+	pci_unregister_driver(&vbox_pci_driver);
+#else
+	drm_pci_exit(&driver, &vbox_pci_driver);
+#endif
+}
+
+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