Archipelago » qemu

/*

 * Copyright (C) 2010 Red Hat, Inc.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License as

 * published by the Free Software Foundation; either version 2 or

 * (at your option) version 3 of the License.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, see <http://www.gnu.org/licenses/>.

 */

#include <pthread.h>

#include "qemu-common.h"

#include "qemu-spice.h"

#include "qemu-timer.h"

#include "qemu-queue.h"

#include "monitor.h"

#include "console.h"

#include "sysemu.h"

#include "spice-display.h"

static int debug = 0;

static void GCC_FMT_ATTR(2, 3) dprint(int level, const char *fmt, ...)

{

    va_list args;

    if (level <= debug) {

        va_start(args, fmt);

        vfprintf(stderr, fmt, args);

        va_end(args);

    }

}

int qemu_spice_rect_is_empty(const QXLRect* r)

{

    return r->top == r->bottom || r->left == r->right;

}

void qemu_spice_rect_union(QXLRect *dest, const QXLRect *r)

{

    if (qemu_spice_rect_is_empty(r)) {

        return;

    }

    if (qemu_spice_rect_is_empty(dest)) {

        *dest = *r;

        return;

    }

    dest->top = MIN(dest->top, r->top);

    dest->left = MIN(dest->left, r->left);

    dest->bottom = MAX(dest->bottom, r->bottom);

    dest->right = MAX(dest->right, r->right);

}

/*

 * Called from spice server thread context (via interface_get_command).

 *

 * We must aquire the global qemu mutex here to make sure the

 * DisplayState (+DisplaySurface) we are accessing doesn't change

 * underneath us.

 */

SimpleSpiceUpdate *qemu_spice_create_update(SimpleSpiceDisplay *ssd)

{

    SimpleSpiceUpdate *update;

    QXLDrawable *drawable;

    QXLImage *image;

    QXLCommand *cmd;

    uint8_t *src, *dst;

    int by, bw, bh;

    qemu_mutex_lock_iothread();

    if (qemu_spice_rect_is_empty(&ssd->dirty)) {

        qemu_mutex_unlock_iothread();

        return NULL;

    };

    dprint(2, "%s: lr %d -> %d,  tb -> %d -> %d\n", __FUNCTION__,

           ssd->dirty.left, ssd->dirty.right,

           ssd->dirty.top, ssd->dirty.bottom);

    update   = qemu_mallocz(sizeof(*update));

    drawable = &update->drawable;

    image    = &update->image;

    cmd      = &update->ext.cmd;

    bw       = ssd->dirty.right - ssd->dirty.left;

    bh       = ssd->dirty.bottom - ssd->dirty.top;

    update->bitmap = qemu_malloc(bw * bh * 4);

    drawable->bbox            = ssd->dirty;

    drawable->clip.type       = SPICE_CLIP_TYPE_NONE;

    drawable->effect          = QXL_EFFECT_OPAQUE;

    drawable->release_info.id = (intptr_t)update;

    drawable->type            = QXL_DRAW_COPY;

    drawable->surfaces_dest[0] = -1;

    drawable->surfaces_dest[1] = -1;

    drawable->surfaces_dest[2] = -1;

    drawable->u.copy.rop_descriptor  = SPICE_ROPD_OP_PUT;

    drawable->u.copy.src_bitmap      = (intptr_t)image;

    drawable->u.copy.src_area.right  = bw;

    drawable->u.copy.src_area.bottom = bh;

    QXL_SET_IMAGE_ID(image, QXL_IMAGE_GROUP_DEVICE, ssd->unique++);

    image->descriptor.type   = SPICE_IMAGE_TYPE_BITMAP;

    image->bitmap.flags      = QXL_BITMAP_DIRECT | QXL_BITMAP_TOP_DOWN;

    image->bitmap.stride     = bw * 4;

    image->descriptor.width  = image->bitmap.x = bw;

    image->descriptor.height = image->bitmap.y = bh;

    image->bitmap.data = (intptr_t)(update->bitmap);

    image->bitmap.palette = 0;

    image->bitmap.format = SPICE_BITMAP_FMT_32BIT;

    if (ssd->conv == NULL) {

        PixelFormat dst = qemu_default_pixelformat(32);

        ssd->conv = qemu_pf_conv_get(&dst, &ssd->ds->surface->pf);

        assert(ssd->conv);

    }

    src = ds_get_data(ssd->ds) +

        ssd->dirty.top * ds_get_linesize(ssd->ds) +

        ssd->dirty.left * ds_get_bytes_per_pixel(ssd->ds);

    dst = update->bitmap;

    for (by = 0; by < bh; by++) {

        qemu_pf_conv_run(ssd->conv, dst, src, bw);

        src += ds_get_linesize(ssd->ds);

        dst += image->bitmap.stride;

    }

    cmd->type = QXL_CMD_DRAW;

    cmd->data = (intptr_t)drawable;

    memset(&ssd->dirty, 0, sizeof(ssd->dirty));

    qemu_mutex_unlock_iothread();

    return update;

}

/*

 * Called from spice server thread context (via interface_release_ressource)

 * We do *not* hold the global qemu mutex here, so extra care is needed

 * when calling qemu functions.  Qemu interfaces used:

 *    - qemu_free (underlying glibc free is re-entrant).

 */

void qemu_spice_destroy_update(SimpleSpiceDisplay *sdpy, SimpleSpiceUpdate *update)

{

    qemu_free(update->bitmap);

    qemu_free(update);

}

void qemu_spice_create_host_memslot(SimpleSpiceDisplay *ssd)

{

    QXLDevMemSlot memslot;

    dprint(1, "%s:\n", __FUNCTION__);

    memset(&memslot, 0, sizeof(memslot));

    memslot.slot_group_id = MEMSLOT_GROUP_HOST;

    memslot.virt_end = ~0;

    ssd->worker->add_memslot(ssd->worker, &memslot);

}

void qemu_spice_create_host_primary(SimpleSpiceDisplay *ssd)

{

    QXLDevSurfaceCreate surface;

    dprint(1, "%s: %dx%d\n", __FUNCTION__,

           ds_get_width(ssd->ds), ds_get_height(ssd->ds));

    surface.format     = SPICE_SURFACE_FMT_32_xRGB;

    surface.width      = ds_get_width(ssd->ds);

    surface.height     = ds_get_height(ssd->ds);

    surface.stride     = -surface.width * 4;

    surface.mouse_mode = true;

    surface.flags      = 0;

    surface.type       = 0;

    surface.mem        = (intptr_t)ssd->buf;

    surface.group_id   = MEMSLOT_GROUP_HOST;

    qemu_mutex_unlock_iothread();

    ssd->worker->create_primary_surface(ssd->worker, 0, &surface);

    qemu_mutex_lock_iothread();

}

void qemu_spice_destroy_host_primary(SimpleSpiceDisplay *ssd)

{

    dprint(1, "%s:\n", __FUNCTION__);

    qemu_mutex_unlock_iothread();

    ssd->worker->destroy_primary_surface(ssd->worker, 0);

    qemu_mutex_lock_iothread();

}

void qemu_spice_vm_change_state_handler(void *opaque, int running, int reason)

{

    SimpleSpiceDisplay *ssd = opaque;

    if (running) {

        ssd->worker->start(ssd->worker);

    } else {

        qemu_mutex_unlock_iothread();

        ssd->worker->stop(ssd->worker);

        qemu_mutex_lock_iothread();

    }

    ssd->running = running;

}

/* display listener callbacks */

void qemu_spice_display_update(SimpleSpiceDisplay *ssd,

                               int x, int y, int w, int h)

{

    QXLRect update_area;

    dprint(2, "%s: x %d y %d w %d h %d\n", __FUNCTION__, x, y, w, h);

    update_area.left = x,

    update_area.right = x + w;

    update_area.top = y;

    update_area.bottom = y + h;

    if (qemu_spice_rect_is_empty(&ssd->dirty)) {

        ssd->notify++;

    }

    qemu_spice_rect_union(&ssd->dirty, &update_area);

}

void qemu_spice_display_resize(SimpleSpiceDisplay *ssd)

{

    dprint(1, "%s:\n", __FUNCTION__);

    memset(&ssd->dirty, 0, sizeof(ssd->dirty));

    qemu_pf_conv_put(ssd->conv);

    ssd->conv = NULL;

    qemu_spice_destroy_host_primary(ssd);

    qemu_spice_create_host_primary(ssd);

    memset(&ssd->dirty, 0, sizeof(ssd->dirty));

    ssd->notify++;

}

void qemu_spice_display_refresh(SimpleSpiceDisplay *ssd)

{

    dprint(3, "%s:\n", __FUNCTION__);

    vga_hw_update();

    if (ssd->notify) {

        ssd->notify = 0;

        ssd->worker->wakeup(ssd->worker);

        dprint(2, "%s: notify\n", __FUNCTION__);

    }

}

/* spice display interface callbacks */

static void interface_attach_worker(QXLInstance *sin, QXLWorker *qxl_worker)

{

    SimpleSpiceDisplay *ssd = container_of(sin, SimpleSpiceDisplay, qxl);

    dprint(1, "%s:\n", __FUNCTION__);

    ssd->worker = qxl_worker;

}

static void interface_set_compression_level(QXLInstance *sin, int level)

{

    dprint(1, "%s:\n", __FUNCTION__);

    /* nothing to do */

}

static void interface_set_mm_time(QXLInstance *sin, uint32_t mm_time)

{

    dprint(3, "%s:\n", __FUNCTION__);

    /* nothing to do */

}

static void interface_get_init_info(QXLInstance *sin, QXLDevInitInfo *info)

{

    SimpleSpiceDisplay *ssd = container_of(sin, SimpleSpiceDisplay, qxl);

    info->memslot_gen_bits = MEMSLOT_GENERATION_BITS;

    info->memslot_id_bits  = MEMSLOT_SLOT_BITS;

    info->num_memslots = NUM_MEMSLOTS;

    info->num_memslots_groups = NUM_MEMSLOTS_GROUPS;

    info->internal_groupslot_id = 0;

    info->qxl_ram_size = ssd->bufsize;

    info->n_surfaces = NUM_SURFACES;

}

static int interface_get_command(QXLInstance *sin, struct QXLCommandExt *ext)

{

    SimpleSpiceDisplay *ssd = container_of(sin, SimpleSpiceDisplay, qxl);

    SimpleSpiceUpdate *update;

    dprint(3, "%s:\n", __FUNCTION__);

    update = qemu_spice_create_update(ssd);

    if (update == NULL) {

        return false;

    }

    *ext = update->ext;

    return true;

}

static int interface_req_cmd_notification(QXLInstance *sin)

{

    dprint(1, "%s:\n", __FUNCTION__);

    return 1;

}

static void interface_release_resource(QXLInstance *sin,

                                       struct QXLReleaseInfoExt ext)

{

    SimpleSpiceDisplay *ssd = container_of(sin, SimpleSpiceDisplay, qxl);

    uintptr_t id;

    dprint(2, "%s:\n", __FUNCTION__);

    id = ext.info->id;

    qemu_spice_destroy_update(ssd, (void*)id);

}

static int interface_get_cursor_command(QXLInstance *sin, struct QXLCommandExt *ext)

{

    dprint(3, "%s:\n", __FUNCTION__);

    return false;

}

static int interface_req_cursor_notification(QXLInstance *sin)

{

    dprint(1, "%s:\n", __FUNCTION__);

    return 1;

}

static void interface_notify_update(QXLInstance *sin, uint32_t update_id)

{

    fprintf(stderr, "%s: abort()\n", __FUNCTION__);

    abort();

}

static int interface_flush_resources(QXLInstance *sin)

{

    fprintf(stderr, "%s: abort()\n", __FUNCTION__);

    abort();

    return 0;

}

static const QXLInterface dpy_interface = {

    .base.type               = SPICE_INTERFACE_QXL,

    .base.description        = "qemu simple display",

    .base.major_version      = SPICE_INTERFACE_QXL_MAJOR,

    .base.minor_version      = SPICE_INTERFACE_QXL_MINOR,

    .attache_worker          = interface_attach_worker,

    .set_compression_level   = interface_set_compression_level,

    .set_mm_time             = interface_set_mm_time,

    .get_init_info           = interface_get_init_info,

    /* the callbacks below are called from spice server thread context */

    .get_command             = interface_get_command,

    .req_cmd_notification    = interface_req_cmd_notification,

    .release_resource        = interface_release_resource,

    .get_cursor_command      = interface_get_cursor_command,

    .req_cursor_notification = interface_req_cursor_notification,

    .notify_update           = interface_notify_update,

    .flush_resources         = interface_flush_resources,

};

static SimpleSpiceDisplay sdpy;

static void display_update(struct DisplayState *ds, int x, int y, int w, int h)

{

    qemu_spice_display_update(&sdpy, x, y, w, h);

}

static void display_resize(struct DisplayState *ds)

{

    qemu_spice_display_resize(&sdpy);

}

static void display_refresh(struct DisplayState *ds)

{

    qemu_spice_display_refresh(&sdpy);

}

static DisplayChangeListener display_listener = {

    .dpy_update  = display_update,

    .dpy_resize  = display_resize,

    .dpy_refresh = display_refresh,

};

void qemu_spice_display_init(DisplayState *ds)

{

    assert(sdpy.ds == NULL);

    sdpy.ds = ds;

    sdpy.bufsize = (16 * 1024 * 1024);

    sdpy.buf = qemu_malloc(sdpy.bufsize);

    register_displaychangelistener(ds, &display_listener);

    sdpy.qxl.base.sif = &dpy_interface.base;

    qemu_spice_add_interface(&sdpy.qxl.base);

    assert(sdpy.worker);

    qemu_add_vm_change_state_handler(qemu_spice_vm_change_state_handler, &sdpy);

    qemu_spice_create_host_memslot(&sdpy);

    qemu_spice_create_host_primary(&sdpy);

}