--- /dev/null
- vbox_write_ioport(
- VBE_DISPI_INDEX_X_OFFSET,
+ // 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 vbox_bo *bo = gem_to_vbox_bo(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 = vbox_bo_gpu_offset(bo);
+
+ /* 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 vbox_bo *bo;
+ int ret;
+
+ if (!new_state->fb)
+ return 0;
+
+ bo = gem_to_vbox_bo(to_vbox_framebuffer(new_state->fb)->obj);
+ ret = vbox_bo_pin(bo, TTM_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 vbox_bo *bo;
+
+ if (!old_state->fb)
+ return;
+
+ bo = gem_to_vbox_bo(to_vbox_framebuffer(old_state->fb)->obj);
+ vbox_bo_unpin(bo);
+ }
+
+ 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 vbox_bo *bo = gem_to_vbox_bo(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 = vbox_bo_kmap(bo);
+ 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);
+ vbox_bo_kunmap(bo);
+
+ 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 vbox_bo *bo;
+
+ if (!new_state->fb)
+ return 0;
+
+ bo = gem_to_vbox_bo(to_vbox_framebuffer(new_state->fb)->obj);
+ return vbox_bo_pin(bo, TTM_PL_FLAG_SYSTEM);
+ }
+
+ static void vbox_cursor_cleanup_fb(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+ {
+ struct vbox_bo *bo;
+
+ if (!plane->state->fb)
+ return;
+
+ bo = gem_to_vbox_bo(to_vbox_framebuffer(plane->state->fb)->obj);
+ vbox_bo_unpin(bo);
+ }
+
+ 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);
+ }
projects / openwrt / staging / blogic.git / commitdiff