| // SPDX-License-Identifier: MIT |
| /* |
| * Copyright (C) 2013-2017 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. |
| * Authors: Dave Airlie <airlied@redhat.com> |
| * Michael Thayer <michael.thayer@oracle.com, |
| * Hans de Goede <hdegoede@redhat.com> |
| */ |
| #include <linux/export.h> |
| |
| #include <drm/drm_atomic.h> |
| #include <drm/drm_atomic_helper.h> |
| #include <drm/drm_fourcc.h> |
| #include <drm/drm_plane_helper.h> |
| #include <drm/drm_probe_helper.h> |
| #include <drm/drm_vblank.h> |
| |
| #include "hgsmi_channels.h" |
| #include "vbox_drv.h" |
| #include "vboxvideo.h" |
| |
| /* |
| * 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) |
| { |
| struct drm_framebuffer *fb = crtc->primary->state->fb; |
| 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 = vbox_crtc->width ? vbox_crtc->width : 640; |
| height = vbox_crtc->height ? vbox_crtc->height : 480; |
| bpp = fb ? fb->format->cpp[0] * 8 : 32; |
| pitch = fb ? fb->pitches[0] : width * bpp / 8; |
| x_offset = vbox->single_framebuffer ? vbox_crtc->x : vbox_crtc->x_hint; |
| y_offset = vbox->single_framebuffer ? vbox_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 && fb && |
| vbox_crtc->fb_offset / pitch < 0xffff - crtc->y && |
| vbox_crtc->fb_offset % (bpp / 8) == 0) { |
| vbox_write_ioport(VBE_DISPI_INDEX_XRES, width); |
| vbox_write_ioport(VBE_DISPI_INDEX_YRES, height); |
| vbox_write_ioport(VBE_DISPI_INDEX_VIRT_WIDTH, pitch * 8 / bpp); |
| vbox_write_ioport(VBE_DISPI_INDEX_BPP, bpp); |
| vbox_write_ioport(VBE_DISPI_INDEX_ENABLE, VBE_DISPI_ENABLED); |
| vbox_write_ioport(VBE_DISPI_INDEX_X_OFFSET, |
| vbox_crtc->fb_offset % pitch / bpp * 8 + vbox_crtc->x); |
| vbox_write_ioport(VBE_DISPI_INDEX_Y_OFFSET, |
| vbox_crtc->fb_offset / pitch + vbox_crtc->y); |
| } |
| |
| flags = VBVA_SCREEN_F_ACTIVE; |
| flags |= (fb && crtc->state->enable) ? 0 : VBVA_SCREEN_F_BLANK; |
| flags |= vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0; |
| hgsmi_process_display_info(vbox->guest_pool, vbox_crtc->crtc_id, |
| x_offset, y_offset, |
| vbox_crtc->x * bpp / 8 + |
| vbox_crtc->y * pitch, |
| pitch, width, height, bpp, flags); |
| } |
| |
| static int vbox_set_view(struct drm_crtc *crtc) |
| { |
| struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc); |
| struct vbox_private *vbox = crtc->dev->dev_private; |
| struct vbva_infoview *p; |
| |
| /* |
| * Tell the host about the view. This design originally targeted the |
| * Windows XP driver architecture and assumed that each screen would |
| * have a dedicated frame buffer with the command buffer following it, |
| * the whole being a "view". The host works out which screen a command |
| * buffer belongs to by checking whether it is in the first view, then |
| * whether it is in the second and so on. The first match wins. We |
| * cheat around this by making the first view be the managed memory |
| * plus the first command buffer, the second the same plus the second |
| * buffer and so on. |
| */ |
| p = hgsmi_buffer_alloc(vbox->guest_pool, sizeof(*p), |
| HGSMI_CH_VBVA, VBVA_INFO_VIEW); |
| if (!p) |
| return -ENOMEM; |
| |
| p->view_index = vbox_crtc->crtc_id; |
| p->view_offset = vbox_crtc->fb_offset; |
| p->view_size = vbox->available_vram_size - vbox_crtc->fb_offset + |
| vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE; |
| p->max_screen_size = vbox->available_vram_size - vbox_crtc->fb_offset; |
| |
| hgsmi_buffer_submit(vbox->guest_pool, p); |
| hgsmi_buffer_free(vbox->guest_pool, p); |
| |
| return 0; |
| } |
| |
| /* |
| * 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 *fb, *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->ddev.mode_config.crtc_list, head) { |
| fb = crtci->primary->state->fb; |
| if (!fb) |
| continue; |
| |
| if (!fb1) { |
| fb1 = fb; |
| if (to_vbox_framebuffer(fb1) == &vbox->afb) |
| break; |
| } else if (fb != fb1) { |
| single_framebuffer = false; |
| } |
| } |
| if (!fb1) |
| return false; |
| |
| if (single_framebuffer) { |
| vbox->single_framebuffer = true; |
| vbox->input_mapping_width = fb1->width; |
| vbox->input_mapping_height = fb1->height; |
| return old_single_framebuffer != vbox->single_framebuffer; |
| } |
| /* Otherwise calculate the total span of all screens. */ |
| list_for_each_entry(connectori, &vbox->ddev.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 void vbox_crtc_set_base_and_mode(struct drm_crtc *crtc, |
| struct drm_framebuffer *fb, |
| int x, int y) |
| { |
| struct drm_gem_vram_object *gbo = |
| drm_gem_vram_of_gem(to_vbox_framebuffer(fb)->obj); |
| struct vbox_private *vbox = crtc->dev->dev_private; |
| struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc); |
| bool needs_modeset = drm_atomic_crtc_needs_modeset(crtc->state); |
| |
| mutex_lock(&vbox->hw_mutex); |
| |
| if (crtc->state->enable) { |
| vbox_crtc->width = crtc->state->mode.hdisplay; |
| vbox_crtc->height = crtc->state->mode.vdisplay; |
| } |
| |
| vbox_crtc->x = x; |
| vbox_crtc->y = y; |
| vbox_crtc->fb_offset = drm_gem_vram_offset(gbo); |
| |
| /* vbox_do_modeset() checks vbox->single_framebuffer so update it now */ |
| if (needs_modeset && vbox_set_up_input_mapping(vbox)) { |
| struct drm_crtc *crtci; |
| |
| list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, |
| head) { |
| if (crtci == crtc) |
| continue; |
| vbox_do_modeset(crtci); |
| } |
| } |
| |
| vbox_set_view(crtc); |
| vbox_do_modeset(crtc); |
| |
| if (needs_modeset) |
| hgsmi_update_input_mapping(vbox->guest_pool, 0, 0, |
| vbox->input_mapping_width, |
| vbox->input_mapping_height); |
| |
| mutex_unlock(&vbox->hw_mutex); |
| } |
| |
| static void vbox_crtc_atomic_enable(struct drm_crtc *crtc, |
| struct drm_crtc_state *old_crtc_state) |
| { |
| } |
| |
| static void vbox_crtc_atomic_disable(struct drm_crtc *crtc, |
| struct drm_crtc_state *old_crtc_state) |
| { |
| } |
| |
| static void vbox_crtc_atomic_flush(struct drm_crtc *crtc, |
| struct drm_crtc_state *old_crtc_state) |
| { |
| struct drm_pending_vblank_event *event; |
| unsigned long flags; |
| |
| if (crtc->state && crtc->state->event) { |
| event = crtc->state->event; |
| crtc->state->event = NULL; |
| |
| spin_lock_irqsave(&crtc->dev->event_lock, flags); |
| drm_crtc_send_vblank_event(crtc, event); |
| spin_unlock_irqrestore(&crtc->dev->event_lock, flags); |
| } |
| } |
| |
| static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = { |
| .atomic_enable = vbox_crtc_atomic_enable, |
| .atomic_disable = vbox_crtc_atomic_disable, |
| .atomic_flush = vbox_crtc_atomic_flush, |
| }; |
| |
| static void vbox_crtc_destroy(struct drm_crtc *crtc) |
| { |
| drm_crtc_cleanup(crtc); |
| kfree(crtc); |
| } |
| |
| static const struct drm_crtc_funcs vbox_crtc_funcs = { |
| .set_config = drm_atomic_helper_set_config, |
| .page_flip = drm_atomic_helper_page_flip, |
| /* .gamma_set = vbox_crtc_gamma_set, */ |
| .destroy = vbox_crtc_destroy, |
| .reset = drm_atomic_helper_crtc_reset, |
| .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, |
| .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, |
| }; |
| |
| static int vbox_primary_atomic_check(struct drm_plane *plane, |
| struct drm_plane_state *new_state) |
| { |
| struct drm_crtc_state *crtc_state = NULL; |
| |
| if (new_state->crtc) { |
| crtc_state = drm_atomic_get_existing_crtc_state( |
| new_state->state, new_state->crtc); |
| if (WARN_ON(!crtc_state)) |
| return -EINVAL; |
| } |
| |
| return drm_atomic_helper_check_plane_state(new_state, crtc_state, |
| DRM_PLANE_HELPER_NO_SCALING, |
| DRM_PLANE_HELPER_NO_SCALING, |
| false, true); |
| } |
| |
| static void vbox_primary_atomic_update(struct drm_plane *plane, |
| struct drm_plane_state *old_state) |
| { |
| struct drm_crtc *crtc = plane->state->crtc; |
| struct drm_framebuffer *fb = plane->state->fb; |
| |
| vbox_crtc_set_base_and_mode(crtc, fb, |
| plane->state->src_x >> 16, |
| plane->state->src_y >> 16); |
| } |
| |
| static void vbox_primary_atomic_disable(struct drm_plane *plane, |
| struct drm_plane_state *old_state) |
| { |
| struct drm_crtc *crtc = old_state->crtc; |
| |
| /* vbox_do_modeset checks plane->state->fb and will disable if NULL */ |
| vbox_crtc_set_base_and_mode(crtc, old_state->fb, |
| old_state->src_x >> 16, |
| old_state->src_y >> 16); |
| } |
| |
| static int vbox_primary_prepare_fb(struct drm_plane *plane, |
| struct drm_plane_state *new_state) |
| { |
| struct drm_gem_vram_object *gbo; |
| int ret; |
| |
| if (!new_state->fb) |
| return 0; |
| |
| gbo = drm_gem_vram_of_gem(to_vbox_framebuffer(new_state->fb)->obj); |
| ret = drm_gem_vram_pin(gbo, DRM_GEM_VRAM_PL_FLAG_VRAM); |
| if (ret) |
| DRM_WARN("Error %d pinning new fb, out of video mem?\n", ret); |
| |
| return ret; |
| } |
| |
| static void vbox_primary_cleanup_fb(struct drm_plane *plane, |
| struct drm_plane_state *old_state) |
| { |
| struct drm_gem_vram_object *gbo; |
| |
| if (!old_state->fb) |
| return; |
| |
| gbo = drm_gem_vram_of_gem(to_vbox_framebuffer(old_state->fb)->obj); |
| drm_gem_vram_unpin(gbo); |
| } |
| |
| static int vbox_cursor_atomic_check(struct drm_plane *plane, |
| struct drm_plane_state *new_state) |
| { |
| struct drm_crtc_state *crtc_state = NULL; |
| u32 width = new_state->crtc_w; |
| u32 height = new_state->crtc_h; |
| int ret; |
| |
| if (new_state->crtc) { |
| crtc_state = drm_atomic_get_existing_crtc_state( |
| new_state->state, new_state->crtc); |
| if (WARN_ON(!crtc_state)) |
| return -EINVAL; |
| } |
| |
| ret = drm_atomic_helper_check_plane_state(new_state, crtc_state, |
| DRM_PLANE_HELPER_NO_SCALING, |
| DRM_PLANE_HELPER_NO_SCALING, |
| true, true); |
| if (ret) |
| return ret; |
| |
| if (!new_state->fb) |
| return 0; |
| |
| if (width > VBOX_MAX_CURSOR_WIDTH || height > VBOX_MAX_CURSOR_HEIGHT || |
| width == 0 || height == 0) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| /* |
| * 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 void vbox_cursor_atomic_update(struct drm_plane *plane, |
| struct drm_plane_state *old_state) |
| { |
| struct vbox_private *vbox = |
| container_of(plane->dev, struct vbox_private, ddev); |
| struct vbox_crtc *vbox_crtc = to_vbox_crtc(plane->state->crtc); |
| struct drm_framebuffer *fb = plane->state->fb; |
| struct drm_gem_vram_object *gbo = |
| drm_gem_vram_of_gem(to_vbox_framebuffer(fb)->obj); |
| u32 width = plane->state->crtc_w; |
| u32 height = plane->state->crtc_h; |
| size_t data_size, mask_size; |
| u32 flags; |
| u8 *src; |
| |
| /* |
| * VirtualBox uses the host windowing system to draw the cursor so |
| * moves are a no-op, we only need to upload new cursor sprites. |
| */ |
| if (fb == old_state->fb) |
| return; |
| |
| mutex_lock(&vbox->hw_mutex); |
| |
| vbox_crtc->cursor_enabled = true; |
| |
| /* pinning is done in prepare/cleanup framebuffer */ |
| src = drm_gem_vram_kmap(gbo, true, NULL); |
| if (IS_ERR(src)) { |
| mutex_unlock(&vbox->hw_mutex); |
| DRM_WARN("Could not kmap cursor bo, skipping update\n"); |
| return; |
| } |
| |
| /* |
| * 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; |
| |
| copy_cursor_image(src, vbox->cursor_data, width, height, mask_size); |
| drm_gem_vram_kunmap(gbo); |
| |
| flags = VBOX_MOUSE_POINTER_VISIBLE | VBOX_MOUSE_POINTER_SHAPE | |
| VBOX_MOUSE_POINTER_ALPHA; |
| hgsmi_update_pointer_shape(vbox->guest_pool, flags, |
| min_t(u32, max(fb->hot_x, 0), width), |
| min_t(u32, max(fb->hot_y, 0), height), |
| width, height, vbox->cursor_data, data_size); |
| |
| mutex_unlock(&vbox->hw_mutex); |
| } |
| |
| static void vbox_cursor_atomic_disable(struct drm_plane *plane, |
| struct drm_plane_state *old_state) |
| { |
| struct vbox_private *vbox = |
| container_of(plane->dev, struct vbox_private, ddev); |
| struct vbox_crtc *vbox_crtc = to_vbox_crtc(old_state->crtc); |
| bool cursor_enabled = false; |
| struct drm_crtc *crtci; |
| |
| mutex_lock(&vbox->hw_mutex); |
| |
| vbox_crtc->cursor_enabled = false; |
| |
| list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, head) { |
| if (to_vbox_crtc(crtci)->cursor_enabled) |
| cursor_enabled = true; |
| } |
| |
| if (!cursor_enabled) |
| hgsmi_update_pointer_shape(vbox->guest_pool, 0, 0, 0, |
| 0, 0, NULL, 0); |
| |
| mutex_unlock(&vbox->hw_mutex); |
| } |
| |
| static int vbox_cursor_prepare_fb(struct drm_plane *plane, |
| struct drm_plane_state *new_state) |
| { |
| struct drm_gem_vram_object *gbo; |
| |
| if (!new_state->fb) |
| return 0; |
| |
| gbo = drm_gem_vram_of_gem(to_vbox_framebuffer(new_state->fb)->obj); |
| return drm_gem_vram_pin(gbo, DRM_GEM_VRAM_PL_FLAG_SYSTEM); |
| } |
| |
| static void vbox_cursor_cleanup_fb(struct drm_plane *plane, |
| struct drm_plane_state *old_state) |
| { |
| struct drm_gem_vram_object *gbo; |
| |
| if (!plane->state->fb) |
| return; |
| |
| gbo = drm_gem_vram_of_gem(to_vbox_framebuffer(plane->state->fb)->obj); |
| drm_gem_vram_unpin(gbo); |
| } |
| |
| static const u32 vbox_cursor_plane_formats[] = { |
| DRM_FORMAT_ARGB8888, |
| }; |
| |
| static const struct drm_plane_helper_funcs vbox_cursor_helper_funcs = { |
| .atomic_check = vbox_cursor_atomic_check, |
| .atomic_update = vbox_cursor_atomic_update, |
| .atomic_disable = vbox_cursor_atomic_disable, |
| .prepare_fb = vbox_cursor_prepare_fb, |
| .cleanup_fb = vbox_cursor_cleanup_fb, |
| }; |
| |
| static const struct drm_plane_funcs vbox_cursor_plane_funcs = { |
| .update_plane = drm_atomic_helper_update_plane, |
| .disable_plane = drm_atomic_helper_disable_plane, |
| .destroy = drm_primary_helper_destroy, |
| .reset = drm_atomic_helper_plane_reset, |
| .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, |
| .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, |
| }; |
| |
| static const u32 vbox_primary_plane_formats[] = { |
| DRM_FORMAT_XRGB8888, |
| DRM_FORMAT_ARGB8888, |
| }; |
| |
| static const struct drm_plane_helper_funcs vbox_primary_helper_funcs = { |
| .atomic_check = vbox_primary_atomic_check, |
| .atomic_update = vbox_primary_atomic_update, |
| .atomic_disable = vbox_primary_atomic_disable, |
| .prepare_fb = vbox_primary_prepare_fb, |
| .cleanup_fb = vbox_primary_cleanup_fb, |
| }; |
| |
| static const struct drm_plane_funcs vbox_primary_plane_funcs = { |
| .update_plane = drm_atomic_helper_update_plane, |
| .disable_plane = drm_atomic_helper_disable_plane, |
| .destroy = drm_primary_helper_destroy, |
| .reset = drm_atomic_helper_plane_reset, |
| .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, |
| .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, |
| }; |
| |
| static struct drm_plane *vbox_create_plane(struct vbox_private *vbox, |
| unsigned int possible_crtcs, |
| enum drm_plane_type type) |
| { |
| const struct drm_plane_helper_funcs *helper_funcs = NULL; |
| const struct drm_plane_funcs *funcs; |
| struct drm_plane *plane; |
| const u32 *formats; |
| int num_formats; |
| int err; |
| |
| if (type == DRM_PLANE_TYPE_PRIMARY) { |
| funcs = &vbox_primary_plane_funcs; |
| formats = vbox_primary_plane_formats; |
| helper_funcs = &vbox_primary_helper_funcs; |
| num_formats = ARRAY_SIZE(vbox_primary_plane_formats); |
| } else if (type == DRM_PLANE_TYPE_CURSOR) { |
| funcs = &vbox_cursor_plane_funcs; |
| formats = vbox_cursor_plane_formats; |
| helper_funcs = &vbox_cursor_helper_funcs; |
| num_formats = ARRAY_SIZE(vbox_cursor_plane_formats); |
| } else { |
| return ERR_PTR(-EINVAL); |
| } |
| |
| plane = kzalloc(sizeof(*plane), GFP_KERNEL); |
| if (!plane) |
| return ERR_PTR(-ENOMEM); |
| |
| err = drm_universal_plane_init(&vbox->ddev, plane, possible_crtcs, |
| funcs, formats, num_formats, |
| NULL, type, NULL); |
| if (err) |
| goto free_plane; |
| |
| drm_plane_helper_add(plane, helper_funcs); |
| |
| return plane; |
| |
| free_plane: |
| kfree(plane); |
| return ERR_PTR(-EINVAL); |
| } |
| |
| static struct vbox_crtc *vbox_crtc_init(struct drm_device *dev, unsigned int i) |
| { |
| struct vbox_private *vbox = |
| container_of(dev, struct vbox_private, ddev); |
| struct drm_plane *cursor = NULL; |
| struct vbox_crtc *vbox_crtc; |
| struct drm_plane *primary; |
| u32 caps = 0; |
| int ret; |
| |
| ret = hgsmi_query_conf(vbox->guest_pool, |
| VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps); |
| if (ret) |
| return ERR_PTR(ret); |
| |
| vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL); |
| if (!vbox_crtc) |
| return ERR_PTR(-ENOMEM); |
| |
| primary = vbox_create_plane(vbox, 1 << i, DRM_PLANE_TYPE_PRIMARY); |
| if (IS_ERR(primary)) { |
| ret = PTR_ERR(primary); |
| goto free_mem; |
| } |
| |
| if ((caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE)) { |
| cursor = vbox_create_plane(vbox, 1 << i, DRM_PLANE_TYPE_CURSOR); |
| if (IS_ERR(cursor)) { |
| ret = PTR_ERR(cursor); |
| goto clean_primary; |
| } |
| } else { |
| DRM_WARN("VirtualBox host is too old, no cursor support\n"); |
| } |
| |
| vbox_crtc->crtc_id = i; |
| |
| ret = drm_crtc_init_with_planes(dev, &vbox_crtc->base, primary, cursor, |
| &vbox_crtc_funcs, NULL); |
| if (ret) |
| goto clean_cursor; |
| |
| drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256); |
| drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs); |
| |
| return vbox_crtc; |
| |
| clean_cursor: |
| if (cursor) { |
| drm_plane_cleanup(cursor); |
| kfree(cursor); |
| } |
| clean_primary: |
| drm_plane_cleanup(primary); |
| kfree(primary); |
| free_mem: |
| kfree(vbox_crtc); |
| return ERR_PTR(ret); |
| } |
| |
| static void vbox_encoder_destroy(struct drm_encoder *encoder) |
| { |
| drm_encoder_cleanup(encoder); |
| kfree(encoder); |
| } |
| |
| static const struct drm_encoder_funcs vbox_enc_funcs = { |
| .destroy = vbox_encoder_destroy, |
| }; |
| |
| 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, |
| DRM_MODE_ENCODER_DAC, NULL); |
| |
| 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; |
| drm_connector_update_edid_property(connector, (struct edid *)edid); |
| } |
| |
| 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; |
| |
| hgsmi_report_flags_location(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) + |
| HOST_FLAGS_OFFSET); |
| if (vbox_connector->vbox_crtc->crtc_id == 0) |
| vbox_report_caps(vbox); |
| |
| 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 (vbox_connector->vbox_crtc->x_hint != -1) |
| drm_object_property_set_value(&connector->base, |
| vbox->ddev.mode_config.suggested_x_property, |
| vbox_connector->vbox_crtc->x_hint); |
| else |
| drm_object_property_set_value(&connector->base, |
| vbox->ddev.mode_config.suggested_x_property, 0); |
| |
| if (vbox_connector->vbox_crtc->y_hint != -1) |
| drm_object_property_set_value(&connector->base, |
| vbox->ddev.mode_config.suggested_y_property, |
| vbox_connector->vbox_crtc->y_hint); |
| else |
| drm_object_property_set_value(&connector->base, |
| vbox->ddev.mode_config.suggested_y_property, 0); |
| |
| return num_modes; |
| } |
| |
| static void vbox_connector_destroy(struct drm_connector *connector) |
| { |
| drm_connector_unregister(connector); |
| 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 = { |
| .get_modes = vbox_get_modes, |
| }; |
| |
| static const struct drm_connector_funcs vbox_connector_funcs = { |
| .detect = vbox_connector_detect, |
| .fill_modes = vbox_fill_modes, |
| .destroy = vbox_connector_destroy, |
| .reset = drm_atomic_helper_connector_reset, |
| .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, |
| .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
| }; |
| |
| 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; |
| |
| 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); |
| |
| drm_connector_attach_encoder(connector, encoder); |
| |
| return 0; |
| } |
| |
| static struct drm_framebuffer *vbox_user_framebuffer_create( |
| struct drm_device *dev, |
| struct drm_file *filp, |
| const struct drm_mode_fb_cmd2 *mode_cmd) |
| { |
| struct vbox_private *vbox = |
| container_of(dev, struct vbox_private, ddev); |
| struct drm_gem_object *obj; |
| struct vbox_framebuffer *vbox_fb; |
| int ret = -ENOMEM; |
| |
| obj = drm_gem_object_lookup(filp, mode_cmd->handles[0]); |
| if (!obj) |
| return ERR_PTR(-ENOENT); |
| |
| vbox_fb = kzalloc(sizeof(*vbox_fb), GFP_KERNEL); |
| if (!vbox_fb) |
| goto err_unref_obj; |
| |
| ret = vbox_framebuffer_init(vbox, vbox_fb, mode_cmd, obj); |
| if (ret) |
| goto err_free_vbox_fb; |
| |
| return &vbox_fb->base; |
| |
| err_free_vbox_fb: |
| kfree(vbox_fb); |
| err_unref_obj: |
| drm_gem_object_put_unlocked(obj); |
| return ERR_PTR(ret); |
| } |
| |
| static const struct drm_mode_config_funcs vbox_mode_funcs = { |
| .fb_create = vbox_user_framebuffer_create, |
| .atomic_check = drm_atomic_helper_check, |
| .atomic_commit = drm_atomic_helper_commit, |
| }; |
| |
| int vbox_mode_init(struct vbox_private *vbox) |
| { |
| struct drm_device *dev = &vbox->ddev; |
| struct drm_encoder *encoder; |
| struct vbox_crtc *vbox_crtc; |
| unsigned int i; |
| int ret; |
| |
| drm_mode_config_init(dev); |
| |
| dev->mode_config.funcs = (void *)&vbox_mode_funcs; |
| dev->mode_config.min_width = 0; |
| dev->mode_config.min_height = 0; |
| dev->mode_config.preferred_depth = 24; |
| dev->mode_config.max_width = VBE_DISPI_MAX_XRES; |
| dev->mode_config.max_height = VBE_DISPI_MAX_YRES; |
| |
| for (i = 0; i < vbox->num_crtcs; ++i) { |
| vbox_crtc = vbox_crtc_init(dev, i); |
| if (IS_ERR(vbox_crtc)) { |
| ret = PTR_ERR(vbox_crtc); |
| goto err_drm_mode_cleanup; |
| } |
| encoder = vbox_encoder_init(dev, i); |
| if (!encoder) { |
| ret = -ENOMEM; |
| goto err_drm_mode_cleanup; |
| } |
| ret = vbox_connector_init(dev, vbox_crtc, encoder); |
| if (ret) |
| goto err_drm_mode_cleanup; |
| } |
| |
| drm_mode_config_reset(dev); |
| return 0; |
| |
| err_drm_mode_cleanup: |
| drm_mode_config_cleanup(dev); |
| return ret; |
| } |
| |
| void vbox_mode_fini(struct vbox_private *vbox) |
| { |
| drm_mode_config_cleanup(&vbox->ddev); |
| } |