From f215e02bf85f68d3a6106c2a1f4f7f063f819064 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:17:27 +0200 Subject: Adding upstream version 7.0.14-dfsg. Signed-off-by: Daniel Baumann --- src/VBox/Additions/linux/drm/vbox_irq.c | 225 ++++++++++++++++++++++++++++++++ 1 file changed, 225 insertions(+) create mode 100644 src/VBox/Additions/linux/drm/vbox_irq.c (limited to 'src/VBox/Additions/linux/drm/vbox_irq.c') diff --git a/src/VBox/Additions/linux/drm/vbox_irq.c b/src/VBox/Additions/linux/drm/vbox_irq.c new file mode 100644 index 00000000..594388f8 --- /dev/null +++ b/src/VBox/Additions/linux/drm/vbox_irq.c @@ -0,0 +1,225 @@ +/* $Id: vbox_irq.c $ */ +/** @file + * VirtualBox Additions Linux kernel video driver + */ + +/* + * Copyright (C) 2016-2023 Oracle and/or its affiliates. + * This file is based on qxl_irq.c + * Copyright 2013 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, sublicense, + * 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 above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * 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 NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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. + * + * Authors: Dave Airlie + * Alon Levy + * Michael Thayer + */ +#include "vbox_drv.h" + +#if RTLNX_VER_MAX(5,1,0) +# include +# if RTLNX_RHEL_MAJ_PREREQ(8,1) +# include +# endif +#else +# include +#endif +#include + +static void vbox_clear_irq(void) +{ + outl((u32)~0, VGA_PORT_HGSMI_HOST); +} + +static u32 vbox_get_flags(struct vbox_private *vbox) +{ + return readl(vbox->guest_heap + HOST_FLAGS_OFFSET); +} + +void vbox_report_hotplug(struct vbox_private *vbox) +{ + schedule_work(&vbox->hotplug_work); +} + +irqreturn_t vbox_irq_handler(int irq, void *arg) +{ + struct drm_device *dev = (struct drm_device *)arg; + struct vbox_private *vbox = (struct vbox_private *)dev->dev_private; + u32 host_flags = vbox_get_flags(vbox); + + if (!(host_flags & HGSMIHOSTFLAGS_IRQ)) + return IRQ_NONE; + + /* + * Due to a bug in the initial host implementation of hot-plug irqs, + * the hot-plug and cursor capability flags were never cleared. + * Fortunately we can tell when they would have been set by checking + * that the VSYNC flag is not set. + */ + if (host_flags & + (HGSMIHOSTFLAGS_HOTPLUG | HGSMIHOSTFLAGS_CURSOR_CAPABILITIES) && + !(host_flags & HGSMIHOSTFLAGS_VSYNC)) + vbox_report_hotplug(vbox); + + vbox_clear_irq(); + + return IRQ_HANDLED; +} + +/** + * Check that the position hints provided by the host are suitable for GNOME + * shell (i.e. all screens disjoint and hints for all enabled screens) and if + * not replace them with default ones. Providing valid hints improves the + * chances that we will get a known screen layout for pointer mapping. + */ +static void validate_or_set_position_hints(struct vbox_private *vbox) +{ + struct VBVAMODEHINT *hintsi, *hintsj; + bool valid = true; + u16 currentx = 0; + int i, j; + + for (i = 0; i < vbox->num_crtcs; ++i) { + for (j = 0; j < i; ++j) { + hintsi = &vbox->last_mode_hints[i]; + hintsj = &vbox->last_mode_hints[j]; + + if (hintsi->fEnabled && hintsj->fEnabled) { + if (hintsi->dx >= 0xffff || + hintsi->dy >= 0xffff || + hintsj->dx >= 0xffff || + hintsj->dy >= 0xffff || + (hintsi->dx < + hintsj->dx + (hintsj->cx & 0x8fff) && + hintsi->dx + (hintsi->cx & 0x8fff) > + hintsj->dx) || + (hintsi->dy < + hintsj->dy + (hintsj->cy & 0x8fff) && + hintsi->dy + (hintsi->cy & 0x8fff) > + hintsj->dy)) + valid = false; + } + } + } + if (!valid) + for (i = 0; i < vbox->num_crtcs; ++i) { + if (vbox->last_mode_hints[i].fEnabled) { + vbox->last_mode_hints[i].dx = currentx; + vbox->last_mode_hints[i].dy = 0; + currentx += + vbox->last_mode_hints[i].cx & 0x8fff; + } + } +} + +/** + * Query the host for the most recent video mode hints. + */ +static void vbox_update_mode_hints(struct vbox_private *vbox) +{ + struct drm_device *dev = vbox->dev; + struct drm_connector *connector; + struct vbox_connector *vbox_conn; + struct VBVAMODEHINT *hints; + u16 flags; + bool disconnected; + unsigned int crtc_id; + int ret; + + ret = VBoxHGSMIGetModeHints(vbox->guest_pool, vbox->num_crtcs, + vbox->last_mode_hints); + if (ret) { + DRM_ERROR("vboxvideo: hgsmi_get_mode_hints failed: %d\n", ret); + return; + } + + validate_or_set_position_hints(vbox); +#if RTLNX_VER_MIN(3,9,0) + drm_modeset_lock_all(dev); +#else + mutex_lock(&dev->mode_config.mutex); +#endif + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + vbox_conn = to_vbox_connector(connector); + + hints = &vbox->last_mode_hints[vbox_conn->vbox_crtc->crtc_id]; + if (hints->magic != VBVAMODEHINT_MAGIC) + continue; + + disconnected = !(hints->fEnabled); + crtc_id = vbox_conn->vbox_crtc->crtc_id; + vbox_conn->mode_hint.width = hints->cx; + vbox_conn->mode_hint.height = hints->cy; + vbox_conn->vbox_crtc->x_hint = hints->dx; + vbox_conn->vbox_crtc->y_hint = hints->dy; + vbox_conn->mode_hint.disconnected = disconnected; + + if (vbox_conn->vbox_crtc->disconnected == disconnected) + continue; + + if (disconnected) + flags = VBVA_SCREEN_F_ACTIVE | VBVA_SCREEN_F_DISABLED; + else + flags = VBVA_SCREEN_F_ACTIVE | VBVA_SCREEN_F_BLANK; + + VBoxHGSMIProcessDisplayInfo(vbox->guest_pool, crtc_id, 0, 0, 0, + hints->cx * 4, hints->cx, + hints->cy, 0, flags); + + vbox_conn->vbox_crtc->disconnected = disconnected; + } +#if RTLNX_VER_MIN(3,9,0) + drm_modeset_unlock_all(dev); +#else + mutex_unlock(&dev->mode_config.mutex); +#endif +} + +static void vbox_hotplug_worker(struct work_struct *work) +{ + struct vbox_private *vbox = container_of(work, struct vbox_private, + hotplug_work); + + vbox_update_mode_hints(vbox); + drm_kms_helper_hotplug_event(vbox->dev); +} + +int vbox_irq_init(struct vbox_private *vbox) +{ + INIT_WORK(&vbox->hotplug_work, vbox_hotplug_worker); + vbox_update_mode_hints(vbox); +#if RTLNX_VER_MIN(5,15,0) || RTLNX_RHEL_RANGE(8,7, 8,99) || RTLNX_RHEL_MAJ_PREREQ(9,1) || RTLNX_SUSE_MAJ_PREREQ(15,5) + return request_irq(VBOX_DRM_TO_PCI_DEV(vbox->dev)->irq, vbox_irq_handler, IRQF_SHARED, vbox->dev->driver->name, vbox->dev); +#elif RTLNX_VER_MIN(3,16,0) || RTLNX_RHEL_MAJ_PREREQ(7,1) + return drm_irq_install(vbox->dev, VBOX_DRM_TO_PCI_DEV(vbox->dev)->irq); +#else + return drm_irq_install(vbox->dev); +#endif +} + +void vbox_irq_fini(struct vbox_private *vbox) +{ +#if RTLNX_VER_MIN(5,15,0) || RTLNX_RHEL_RANGE(8,7, 8,99) || RTLNX_RHEL_MAJ_PREREQ(9,1) || RTLNX_SUSE_MAJ_PREREQ(15,5) + free_irq(VBOX_DRM_TO_PCI_DEV(vbox->dev)->irq, vbox->dev); +#else + drm_irq_uninstall(vbox->dev); +#endif + flush_work(&vbox->hotplug_work); +} -- cgit v1.2.3