/* $Id: vbox_mode.c $ */ /** @file * VirtualBox Additions Linux kernel video driver */ /* * Copyright (C) 2013-2019 Oracle Corporation * This file is based on ast_mode.c * Copyright 2012 Red Hat Inc. * Parts based on xf86-video-ast * Copyright (c) 2005 ASPEED Technology 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 #include #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 18, 0) || defined(RHEL_72) #include #endif #include "VBoxVideo.h" static int vbox_cursor_set2(struct drm_crtc *crtc, struct drm_file *file_priv, u32 handle, u32 width, u32 height, s32 hot_x, s32 hot_y); static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y); /** * Set a graphics mode. Poke any required values into registers, do an HGSMI * mode set and tell the host we support advanced graphics functions. */ static void vbox_do_modeset(struct drm_crtc *crtc, const struct drm_display_mode *mode) { struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc); struct vbox_private *vbox; int width, height, bpp, pitch; u16 flags; s32 x_offset, y_offset; vbox = crtc->dev->dev_private; width = mode->hdisplay ? mode->hdisplay : 640; height = mode->vdisplay ? mode->vdisplay : 480; #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0) || defined(RHEL_75) bpp = crtc->enabled ? CRTC_FB(crtc)->format->cpp[0] * 8 : 32; pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8; #elif LINUX_VERSION_CODE >= KERNEL_VERSION(3, 3, 0) bpp = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32; pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8; #else bpp = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32; pitch = crtc->enabled ? CRTC_FB(crtc)->pitch : width * bpp / 8; #endif x_offset = vbox->single_framebuffer ? crtc->x : vbox_crtc->x_hint; y_offset = vbox->single_framebuffer ? crtc->y : vbox_crtc->y_hint; /* * This is the old way of setting graphics modes. It assumed one screen * and a frame-buffer at the start of video RAM. On older versions of * VirtualBox, certain parts of the code still assume that the first * screen is programmed this way, so try to fake it. */ if (vbox_crtc->crtc_id == 0 && crtc->enabled && vbox_crtc->fb_offset / pitch < 0xffff - crtc->y && vbox_crtc->fb_offset % (bpp / 8) == 0) VBoxVideoSetModeRegisters( width, height, pitch * 8 / bpp, #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0) || defined(RHEL_75) CRTC_FB(crtc)->format->cpp[0] * 8, #else CRTC_FB(crtc)->bits_per_pixel, #endif 0, vbox_crtc->fb_offset % pitch / bpp * 8 + crtc->x, vbox_crtc->fb_offset / pitch + crtc->y); flags = VBVA_SCREEN_F_ACTIVE; flags |= (crtc->enabled && !vbox_crtc->blanked) ? 0 : VBVA_SCREEN_F_BLANK; flags |= vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0; VBoxHGSMIProcessDisplayInfo(vbox->guest_pool, vbox_crtc->crtc_id, x_offset, y_offset, vbox_crtc->fb_offset + crtc->x * bpp / 8 + crtc->y * pitch, pitch, width, height, vbox_crtc->blanked ? 0 : bpp, flags); } static void vbox_crtc_dpms(struct drm_crtc *crtc, int mode) { struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc); struct vbox_private *vbox = crtc->dev->dev_private; switch (mode) { case DRM_MODE_DPMS_ON: vbox_crtc->blanked = false; /* Restart the refresh timer if necessary. */ schedule_delayed_work(&vbox->refresh_work, VBOX_REFRESH_PERIOD); break; case DRM_MODE_DPMS_STANDBY: case DRM_MODE_DPMS_SUSPEND: case DRM_MODE_DPMS_OFF: vbox_crtc->blanked = true; break; } mutex_lock(&vbox->hw_mutex); vbox_do_modeset(crtc, &crtc->hwmode); mutex_unlock(&vbox->hw_mutex); } static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc, const struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) { return true; } /* * Try to map the layout of virtual screens to the range of the input device. * Return true if we need to re-set the crtc modes due to screen offset * changes. */ static bool vbox_set_up_input_mapping(struct vbox_private *vbox) { struct drm_crtc *crtci; struct drm_connector *connectori; struct drm_framebuffer *fb1 = NULL; bool single_framebuffer = true; bool old_single_framebuffer = vbox->single_framebuffer; u16 width = 0, height = 0; /* * Are we using an X.Org-style single large frame-buffer for all crtcs? * If so then screen layout can be deduced from the crtc offsets. * Same fall-back if this is the fbdev frame-buffer. */ list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) { if (!fb1) { fb1 = CRTC_FB(crtci); if (to_vbox_framebuffer(fb1) == &vbox->fbdev->afb) break; } else if (CRTC_FB(crtci) && fb1 != CRTC_FB(crtci)) { single_framebuffer = false; } } if (single_framebuffer) { list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) { if (to_vbox_crtc(crtci)->crtc_id != 0) continue; vbox->single_framebuffer = true; vbox->input_mapping_width = CRTC_FB(crtci)->width; vbox->input_mapping_height = CRTC_FB(crtci)->height; return old_single_framebuffer != vbox->single_framebuffer; } } /* Otherwise calculate the total span of all screens. */ list_for_each_entry(connectori, &vbox->dev->mode_config.connector_list, head) { struct vbox_connector *vbox_connector = to_vbox_connector(connectori); struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc; width = max_t(u16, width, vbox_crtc->x_hint + vbox_connector->mode_hint.width); height = max_t(u16, height, vbox_crtc->y_hint + vbox_connector->mode_hint.height); } vbox->single_framebuffer = false; vbox->input_mapping_width = width; vbox->input_mapping_height = height; return old_single_framebuffer != vbox->single_framebuffer; } static int vbox_crtc_set_base(struct drm_crtc *crtc, struct drm_framebuffer *old_fb, int x, int y) { struct vbox_private *vbox = crtc->dev->dev_private; struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc); struct drm_gem_object *obj; struct vbox_framebuffer *vbox_fb; struct vbox_bo *bo; int ret; u64 gpu_addr; vbox_fb = to_vbox_framebuffer(CRTC_FB(crtc)); obj = vbox_fb->obj; bo = gem_to_vbox_bo(obj); ret = vbox_bo_reserve(bo, false); if (ret) return ret; ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr); vbox_bo_unreserve(bo); if (ret) return ret; /* Unpin the previous fb. Do this after the new one has been pinned rather * than before and re-pinning it on failure in case that fails too. */ if (old_fb) { vbox_fb = to_vbox_framebuffer(old_fb); obj = vbox_fb->obj; bo = gem_to_vbox_bo(obj); ret = vbox_bo_reserve(bo, false); /* This should never fail, as no one else should be accessing it and we * should be running under the modeset locks. */ if (!ret) { vbox_bo_unpin(bo); vbox_bo_unreserve(bo); } } if (&vbox->fbdev->afb == vbox_fb) vbox_fbdev_set_base(vbox, gpu_addr); vbox_crtc->fb_offset = gpu_addr; if (vbox_set_up_input_mapping(vbox)) { struct drm_crtc *crtci; list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) { vbox_do_modeset(crtci, &crtci->mode); } } return 0; } static int vbox_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode, int x, int y, struct drm_framebuffer *old_fb) { struct vbox_private *vbox = crtc->dev->dev_private; int ret = vbox_crtc_set_base(crtc, old_fb, x, y); if (ret) return ret; mutex_lock(&vbox->hw_mutex); vbox_do_modeset(crtc, mode); VBoxHGSMIUpdateInputMapping(vbox->guest_pool, 0, 0, vbox->input_mapping_width, vbox->input_mapping_height); mutex_unlock(&vbox->hw_mutex); return ret; } static void vbox_crtc_disable(struct drm_crtc *crtc) { } static void vbox_crtc_prepare(struct drm_crtc *crtc) { } static void vbox_crtc_commit(struct drm_crtc *crtc) { } static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = { .dpms = vbox_crtc_dpms, .mode_fixup = vbox_crtc_mode_fixup, .mode_set = vbox_crtc_mode_set, .disable = vbox_crtc_disable, .prepare = vbox_crtc_prepare, .commit = vbox_crtc_commit, }; static void vbox_crtc_reset(struct drm_crtc *crtc) { } static void vbox_crtc_destroy(struct drm_crtc *crtc) { drm_crtc_cleanup(crtc); kfree(crtc); } static const struct drm_crtc_funcs vbox_crtc_funcs = { .cursor_move = vbox_cursor_move, .cursor_set2 = vbox_cursor_set2, .reset = vbox_crtc_reset, .set_config = drm_crtc_helper_set_config, /* .gamma_set = vbox_crtc_gamma_set, */ .destroy = vbox_crtc_destroy, }; static struct vbox_crtc *vbox_crtc_init(struct drm_device *dev, unsigned int i) { struct vbox_crtc *vbox_crtc; vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL); if (!vbox_crtc) return NULL; vbox_crtc->crtc_id = i; drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs); drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256); drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs); return vbox_crtc; } static void vbox_encoder_destroy(struct drm_encoder *encoder) { drm_encoder_cleanup(encoder); kfree(encoder); } #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0) && !defined(RHEL_71) static struct drm_encoder *drm_encoder_find(struct drm_device *dev, u32 id) { struct drm_mode_object *mo; mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER); return mo ? obj_to_encoder(mo) : NULL; } #endif static struct drm_encoder *vbox_best_single_encoder(struct drm_connector *connector) { int enc_id = connector->encoder_ids[0]; /* pick the encoder ids */ if (enc_id) #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0) || \ (defined(CONFIG_SUSE_VERSION) && \ LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)) || \ defined(RHEL_76) return drm_encoder_find(connector->dev, NULL, enc_id); #else return drm_encoder_find(connector->dev, enc_id); #endif return NULL; } static const struct drm_encoder_funcs vbox_enc_funcs = { .destroy = vbox_encoder_destroy, }; static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode) { } static bool vbox_mode_fixup(struct drm_encoder *encoder, const struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) { return true; } static void vbox_encoder_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) { } static void vbox_encoder_prepare(struct drm_encoder *encoder) { } static void vbox_encoder_commit(struct drm_encoder *encoder) { } static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = { .dpms = vbox_encoder_dpms, .mode_fixup = vbox_mode_fixup, .prepare = vbox_encoder_prepare, .commit = vbox_encoder_commit, .mode_set = vbox_encoder_mode_set, }; static struct drm_encoder *vbox_encoder_init(struct drm_device *dev, unsigned int i) { struct vbox_encoder *vbox_encoder; vbox_encoder = kzalloc(sizeof(*vbox_encoder), GFP_KERNEL); if (!vbox_encoder) return NULL; drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs, #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0) || defined(RHEL_73) DRM_MODE_ENCODER_DAC, NULL); #else DRM_MODE_ENCODER_DAC); #endif drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs); vbox_encoder->base.possible_crtcs = 1 << i; return &vbox_encoder->base; } /** * Generate EDID data with a mode-unique serial number for the virtual * monitor to try to persuade Unity that different modes correspond to * different monitors and it should not try to force the same resolution on * them. */ static void vbox_set_edid(struct drm_connector *connector, int width, int height) { enum { EDID_SIZE = 128 }; unsigned char edid[EDID_SIZE] = { 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */ 0x58, 0x58, /* manufacturer (VBX) */ 0x00, 0x00, /* product code */ 0x00, 0x00, 0x00, 0x00, /* serial number goes here */ 0x01, /* week of manufacture */ 0x00, /* year of manufacture */ 0x01, 0x03, /* EDID version */ 0x80, /* capabilities - digital */ 0x00, /* horiz. res in cm, zero for projectors */ 0x00, /* vert. res in cm */ 0x78, /* display gamma (120 == 2.2). */ 0xEE, /* features (standby, suspend, off, RGB, std */ /* colour space, preferred timing mode) */ 0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54, /* chromaticity for standard colour space. */ 0x00, 0x00, 0x00, /* no default timings */ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, /* no standard timings */ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02, 0x02, 0x02, /* descriptor block 1 goes below */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* descriptor block 2, monitor ranges */ 0x00, 0x00, 0x00, 0xFD, 0x00, 0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, /* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */ 0x20, /* descriptor block 3, monitor name */ 0x00, 0x00, 0x00, 0xFC, 0x00, 'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r', '\n', /* descriptor block 4: dummy data */ 0x00, 0x00, 0x00, 0x10, 0x00, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, /* number of extensions */ 0x00 /* checksum goes here */ }; int clock = (width + 6) * (height + 6) * 60 / 10000; unsigned int i, sum = 0; edid[12] = width & 0xff; edid[13] = width >> 8; edid[14] = height & 0xff; edid[15] = height >> 8; edid[54] = clock & 0xff; edid[55] = clock >> 8; edid[56] = width & 0xff; edid[58] = (width >> 4) & 0xf0; edid[59] = height & 0xff; edid[61] = (height >> 4) & 0xf0; for (i = 0; i < EDID_SIZE - 1; ++i) sum += edid[i]; edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF; #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0) drm_connector_update_edid_property(connector, (struct edid *)edid); #else drm_mode_connector_update_edid_property(connector, (struct edid *)edid); #endif } static int vbox_get_modes(struct drm_connector *connector) { struct vbox_connector *vbox_connector = NULL; struct drm_display_mode *mode = NULL; struct vbox_private *vbox = NULL; unsigned int num_modes = 0; int preferred_width, preferred_height; vbox_connector = to_vbox_connector(connector); vbox = connector->dev->dev_private; /* * Heuristic: we do not want to tell the host that we support dynamic * resizing unless we feel confident that the user space client using * the video driver can handle hot-plug events. So the first time modes * are queried after a "master" switch we tell the host that we do not, * and immediately after we send the client a hot-plug notification as * a test to see if they will respond and query again. * That is also the reason why capabilities are reported to the host at * this place in the code rather than elsewhere. * We need to report the flags location before reporting the IRQ * capability. */ VBoxHGSMIReportFlagsLocation(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) + HOST_FLAGS_OFFSET); if (vbox_connector->vbox_crtc->crtc_id == 0) vbox_report_caps(vbox); if (!vbox->initial_mode_queried) { if (vbox_connector->vbox_crtc->crtc_id == 0) { vbox->initial_mode_queried = true; vbox_report_hotplug(vbox); } return drm_add_modes_noedid(connector, 800, 600); } /* Also assume that a client which supports hot-plugging also knows * how to update the screen in a way we can use, the only known * relevent client which cannot is Plymouth in Ubuntu 14.04. */ vbox->need_refresh_timer = false; num_modes = drm_add_modes_noedid(connector, 2560, 1600); preferred_width = vbox_connector->mode_hint.width ? vbox_connector->mode_hint.width : 1024; preferred_height = vbox_connector->mode_hint.height ? vbox_connector->mode_hint.height : 768; mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height, 60, false, false, false); if (mode) { mode->type |= DRM_MODE_TYPE_PREFERRED; drm_mode_probed_add(connector, mode); ++num_modes; } vbox_set_edid(connector, preferred_width, preferred_height); #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0) || defined(RHEL_72) if (vbox_connector->vbox_crtc->x_hint != -1) drm_object_property_set_value(&connector->base, vbox->dev->mode_config.suggested_x_property, vbox_connector->vbox_crtc->x_hint); else drm_object_property_set_value(&connector->base, vbox->dev->mode_config.suggested_x_property, 0); if (vbox_connector->vbox_crtc->y_hint != -1) drm_object_property_set_value(&connector->base, vbox->dev->mode_config.suggested_y_property, vbox_connector->vbox_crtc->y_hint); else drm_object_property_set_value(&connector->base, vbox->dev->mode_config.suggested_y_property, 0); #endif return num_modes; } static int vbox_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { return MODE_OK; } static void vbox_connector_destroy(struct drm_connector *connector) { #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) && !defined(RHEL_72) drm_sysfs_connector_remove(connector); #else drm_connector_unregister(connector); #endif drm_connector_cleanup(connector); kfree(connector); } static enum drm_connector_status vbox_connector_detect(struct drm_connector *connector, bool force) { struct vbox_connector *vbox_connector; vbox_connector = to_vbox_connector(connector); return vbox_connector->mode_hint.disconnected ? connector_status_disconnected : connector_status_connected; } static int vbox_fill_modes(struct drm_connector *connector, u32 max_x, u32 max_y) { struct vbox_connector *vbox_connector; struct drm_device *dev; struct drm_display_mode *mode, *iterator; vbox_connector = to_vbox_connector(connector); dev = vbox_connector->base.dev; list_for_each_entry_safe(mode, iterator, &connector->modes, head) { list_del(&mode->head); drm_mode_destroy(dev, mode); } return drm_helper_probe_single_connector_modes(connector, max_x, max_y); } static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = { .mode_valid = vbox_mode_valid, .get_modes = vbox_get_modes, .best_encoder = vbox_best_single_encoder, }; static const struct drm_connector_funcs vbox_connector_funcs = { .dpms = drm_helper_connector_dpms, .detect = vbox_connector_detect, .fill_modes = vbox_fill_modes, .destroy = vbox_connector_destroy, }; static int vbox_connector_init(struct drm_device *dev, struct vbox_crtc *vbox_crtc, struct drm_encoder *encoder) { struct vbox_connector *vbox_connector; struct drm_connector *connector; vbox_connector = kzalloc(sizeof(*vbox_connector), GFP_KERNEL); if (!vbox_connector) return -ENOMEM; connector = &vbox_connector->base; vbox_connector->vbox_crtc = vbox_crtc; drm_connector_init(dev, connector, &vbox_connector_funcs, DRM_MODE_CONNECTOR_VGA); drm_connector_helper_add(connector, &vbox_connector_helper_funcs); connector->interlace_allowed = 0; connector->doublescan_allowed = 0; #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0) || defined(RHEL_72) drm_mode_create_suggested_offset_properties(dev); drm_object_attach_property(&connector->base, dev->mode_config.suggested_x_property, 0); drm_object_attach_property(&connector->base, dev->mode_config.suggested_y_property, 0); #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) && !defined(RHEL_72) drm_sysfs_connector_add(connector); #else drm_connector_register(connector); #endif #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0) drm_connector_attach_encoder(connector, encoder); #else drm_mode_connector_attach_encoder(connector, encoder); #endif return 0; } int vbox_mode_init(struct drm_device *dev) { struct vbox_private *vbox = dev->dev_private; struct drm_encoder *encoder; struct vbox_crtc *vbox_crtc; unsigned int i; int ret; /* vbox_cursor_init(dev); */ for (i = 0; i < vbox->num_crtcs; ++i) { vbox_crtc = vbox_crtc_init(dev, i); if (!vbox_crtc) return -ENOMEM; encoder = vbox_encoder_init(dev, i); if (!encoder) return -ENOMEM; ret = vbox_connector_init(dev, vbox_crtc, encoder); if (ret) return ret; } return 0; } void vbox_mode_fini(struct drm_device *dev) { /* vbox_cursor_fini(dev); */ } /** * Copy the ARGB image and generate the mask, which is needed in case the host * does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set * if the corresponding alpha value in the ARGB image is greater than 0xF0. */ static void copy_cursor_image(u8 *src, u8 *dst, u32 width, u32 height, size_t mask_size) { size_t line_size = (width + 7) / 8; u32 i, j; memcpy(dst + mask_size, src, width * height * 4); for (i = 0; i < height; ++i) for (j = 0; j < width; ++j) if (((u32 *)src)[i * width + j] > 0xf0000000) dst[i * line_size + j / 8] |= (0x80 >> (j % 8)); } static int vbox_cursor_set2(struct drm_crtc *crtc, struct drm_file *file_priv, u32 handle, u32 width, u32 height, s32 hot_x, s32 hot_y) { struct vbox_private *vbox = crtc->dev->dev_private; struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc); struct ttm_bo_kmap_obj uobj_map; size_t data_size, mask_size; struct drm_gem_object *obj; u32 flags, caps = 0; struct vbox_bo *bo; bool src_isiomem; u8 *dst = NULL; u8 *src; int ret; if (!handle) { bool cursor_enabled = false; struct drm_crtc *crtci; /* Hide cursor. */ vbox_crtc->cursor_enabled = false; list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) { if (to_vbox_crtc(crtci)->cursor_enabled) cursor_enabled = true; } if (!cursor_enabled) VBoxHGSMIUpdatePointerShape(vbox->guest_pool, 0, 0, 0, 0, 0, NULL, 0); return 0; } vbox_crtc->cursor_enabled = true; if (width > VBOX_MAX_CURSOR_WIDTH || height > VBOX_MAX_CURSOR_HEIGHT || width == 0 || height == 0) return -EINVAL; ret = VBoxQueryConfHGSMI(vbox->guest_pool, VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps); if (ret) return ret == VERR_NO_MEMORY ? -ENOMEM : -EINVAL; if (!(caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE)) { /* * -EINVAL means cursor_set2() not supported, -EAGAIN means * retry at once. */ return -EBUSY; } #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0) || defined(RHEL_74) obj = drm_gem_object_lookup(file_priv, handle); #else obj = drm_gem_object_lookup(crtc->dev, file_priv, handle); #endif if (!obj) { DRM_ERROR("Cannot find cursor object %x for crtc\n", handle); return -ENOENT; } bo = gem_to_vbox_bo(obj); ret = vbox_bo_reserve(bo, false); if (ret) goto out_unref_obj; /* * The mask must be calculated based on the alpha * channel, one bit per ARGB word, and must be 32-bit * padded. */ mask_size = ((width + 7) / 8 * height + 3) & ~3; data_size = width * height * 4 + mask_size; vbox->cursor_hot_x = hot_x; vbox->cursor_hot_y = hot_y; vbox->cursor_width = width; vbox->cursor_height = height; vbox->cursor_data_size = data_size; dst = vbox->cursor_data; ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map); if (ret) { vbox->cursor_data_size = 0; goto out_unreserve_bo; } src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem); if (src_isiomem) { DRM_ERROR("src cursor bo not in main memory\n"); ret = -EIO; goto out_unmap_bo; } copy_cursor_image(src, dst, width, height, mask_size); flags = VBOX_MOUSE_POINTER_VISIBLE | VBOX_MOUSE_POINTER_SHAPE | VBOX_MOUSE_POINTER_ALPHA; ret = VBoxHGSMIUpdatePointerShape(vbox->guest_pool, flags, vbox->cursor_hot_x, vbox->cursor_hot_y, width, height, dst, data_size); ret = ret == VINF_SUCCESS ? 0 : ret == VERR_NO_MEMORY ? -ENOMEM : ret == VERR_NOT_SUPPORTED ? -EBUSY : -EINVAL; out_unmap_bo: ttm_bo_kunmap(&uobj_map); out_unreserve_bo: vbox_bo_unreserve(bo); out_unref_obj: drm_gem_object_put_unlocked(obj); return ret; } static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y) { struct vbox_private *vbox = crtc->dev->dev_private; s32 crtc_x = vbox->single_framebuffer ? crtc->x : to_vbox_crtc(crtc)->x_hint; s32 crtc_y = vbox->single_framebuffer ? crtc->y : to_vbox_crtc(crtc)->y_hint; int ret; x += vbox->cursor_hot_x; y += vbox->cursor_hot_y; if (x + crtc_x < 0 || y + crtc_y < 0 || x + crtc_x >= vbox->input_mapping_width || y + crtc_y >= vbox->input_mapping_width || vbox->cursor_data_size == 0) return 0; ret = VBoxHGSMICursorPosition(vbox->guest_pool, true, x + crtc_x, y + crtc_y, NULL, NULL); return ret == VINF_SUCCESS ? 0 : ret == VERR_NO_MEMORY ? -ENOMEM : ret == VERR_NOT_SUPPORTED ? -EBUSY : -EINVAL; }