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qxl: make qxl_render_update async 

RHBZ# 747011

Removes the last user of QXL_SYNC when using update drivers that use the
_ASYNC io ports.

The last user is qxl_render_update, it is called both by qxl_hw_update
which is the vga_hw_update_ptr passed to graphic_console_init, and by
qxl_hw_screen_dump.

At the same time the QXLRect area being passed to the red_worker thread
is passed as a copy, as part of the QXLCookie.

The implementation uses interface_update_area_complete with a bh to make
sure dpy_update and qxl_flip are called from the io thread, otherwise
the vga->ds->surface.data can change under our feet.

With this patch sdl+spice works fine. But spice by itself doesn't
produce the expected screendumps unless repeated a few times, due to
ppm_save being called before update_area (rendering done in spice server
thread) having a chance to complete. Fixed by next patch, but see commit
message for problem introduced by it.

Signed-off-by: Alon Levy <alevy@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Alon Levy 2012-02-24 23:19:31 +02:00 committed by Gerd Hoffmann
parent 2e1a98c9c1
commit 81fb6f1504
4 changed files with 150 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

96
hw/qxl-render.c
View File

@ -82,17 +82,25 @@ void qxl_render_resize(PCIQXLDevice *qxl)
}
}
void qxl_render_update(PCIQXLDevice *qxl)
static void qxl_set_rect_to_surface(PCIQXLDevice *qxl, QXLRect *area)
{
area->left = 0;
area->right = qxl->guest_primary.surface.width;
area->top = 0;
area->bottom = qxl->guest_primary.surface.height;
}
static void qxl_render_update_area_unlocked(PCIQXLDevice *qxl)
{
VGACommonState *vga = &qxl->vga;
QXLRect dirty[32], update;
int i, redraw = 0;
int i;
DisplaySurface *surface = vga->ds->surface;
if (qxl->guest_primary.resized) {
qxl->guest_primary.resized = 0;
qxl->guest_primary.data = memory_region_get_ram_ptr(&qxl->vga.vram);
qxl_set_rect_to_surface(qxl, &qxl->dirty[0]);
qxl->num_dirty_rects = 1;
dprint(qxl, 1, "%s: %dx%d, stride %d, bpp %d, depth %d\n",
__FUNCTION__,
qxl->guest_primary.surface.width,
@ -103,9 +111,9 @@ void qxl_render_update(PCIQXLDevice *qxl)
}
if (surface->width != qxl->guest_primary.surface.width ||
surface->height != qxl->guest_primary.surface.height) {
dprint(qxl, 1, "%s: resizing displaysurface to guest_primary\n",
__func__);
if (qxl->guest_primary.qxl_stride > 0) {
dprint(qxl, 1, "%s: using guest_primary for displaysurface\n",
__func__);
qemu_free_displaysurface(vga->ds);
qemu_create_displaysurface_from(qxl->guest_primary.surface.width,
qxl->guest_primary.surface.height,
@ -113,36 +121,70 @@ void qxl_render_update(PCIQXLDevice *qxl)
qxl->guest_primary.abs_stride,
qxl->guest_primary.data);
} else {
dprint(qxl, 1, "%s: resizing displaysurface to guest_primary\n",
__func__);
qemu_resize_displaysurface(vga->ds,
qxl->guest_primary.surface.width,
qxl->guest_primary.surface.height);
}
}
update.left = 0;
update.right = qxl->guest_primary.surface.width;
update.top = 0;
update.bottom = qxl->guest_primary.surface.height;
memset(dirty, 0, sizeof(dirty));
if (runstate_is_running() && qxl->guest_primary.commands) {
qxl->guest_primary.commands = 0;
qxl_spice_update_area(qxl, 0, &update,
dirty, ARRAY_SIZE(dirty), 1, QXL_SYNC, NULL);
}
if (redraw) {
memset(dirty, 0, sizeof(dirty));
dirty[0] = update;
}
for (i = 0; i < ARRAY_SIZE(dirty); i++) {
if (qemu_spice_rect_is_empty(dirty+i)) {
for (i = 0; i < qxl->num_dirty_rects; i++) {
if (qemu_spice_rect_is_empty(qxl->dirty+i)) {
break;
}
qxl_flip(qxl, dirty+i);
qxl_flip(qxl, qxl->dirty+i);
dpy_update(vga->ds,
dirty[i].left, dirty[i].top,
dirty[i].right - dirty[i].left,
dirty[i].bottom - dirty[i].top);
qxl->dirty[i].left, qxl->dirty[i].top,
qxl->dirty[i].right - qxl->dirty[i].left,
qxl->dirty[i].bottom - qxl->dirty[i].top);
}
qxl->num_dirty_rects = 0;
}
/*
* use ssd.lock to protect render_update_cookie_num.
* qxl_render_update is called by io thread or vcpu thread, and the completion
* callbacks are called by spice_server thread, defering to bh called from the
* io thread.
*/
void qxl_render_update(PCIQXLDevice *qxl)
{
QXLCookie *cookie;
qemu_mutex_lock(&qxl->ssd.lock);
if (!runstate_is_running() || !qxl->guest_primary.commands) {
qxl_render_update_area_unlocked(qxl);
qemu_mutex_unlock(&qxl->ssd.lock);
return;
}
qxl->guest_primary.commands = 0;
qxl->render_update_cookie_num++;
qemu_mutex_unlock(&qxl->ssd.lock);
cookie = qxl_cookie_new(QXL_COOKIE_TYPE_RENDER_UPDATE_AREA,
0);
qxl_set_rect_to_surface(qxl, &cookie->u.render.area);
qxl_spice_update_area(qxl, 0, &cookie->u.render.area, NULL,
0, 1 /* clear_dirty_region */, QXL_ASYNC, cookie);
}
void qxl_render_update_area_bh(void *opaque)
{
PCIQXLDevice *qxl = opaque;
qemu_mutex_lock(&qxl->ssd.lock);
qxl_render_update_area_unlocked(qxl);
qemu_mutex_unlock(&qxl->ssd.lock);
}
void qxl_render_update_area_done(PCIQXLDevice *qxl, QXLCookie *cookie)
{
qemu_mutex_lock(&qxl->ssd.lock);
qemu_bh_schedule(qxl->update_area_bh);
qxl->render_update_cookie_num--;
qemu_mutex_unlock(&qxl->ssd.lock);
g_free(cookie);
}
static QEMUCursor *qxl_cursor(PCIQXLDevice *qxl, QXLCursor *cursor)

69
hw/qxl.c
View File

@ -747,6 +747,11 @@ static void interface_async_complete_io(PCIQXLDevice *qxl, QXLCookie *cookie)
__func__, current_async, cookie->io);
}
switch (current_async) {
case QXL_IO_MEMSLOT_ADD_ASYNC:
case QXL_IO_DESTROY_PRIMARY_ASYNC:
case QXL_IO_UPDATE_AREA_ASYNC:
case QXL_IO_FLUSH_SURFACES_ASYNC:
break;
case QXL_IO_CREATE_PRIMARY_ASYNC:
qxl_create_guest_primary_complete(qxl);
break;
@ -756,10 +761,53 @@ static void interface_async_complete_io(PCIQXLDevice *qxl, QXLCookie *cookie)
case QXL_IO_DESTROY_SURFACE_ASYNC:
qxl_spice_destroy_surface_wait_complete(qxl, cookie->u.surface_id);
break;
default:
fprintf(stderr, "qxl: %s: unexpected current_async %d\n", __func__,
current_async);
}
qxl_send_events(qxl, QXL_INTERRUPT_IO_CMD);
}
/* called from spice server thread context only */
static void interface_update_area_complete(QXLInstance *sin,
uint32_t surface_id,
QXLRect *dirty, uint32_t num_updated_rects)
{
PCIQXLDevice *qxl = container_of(sin, PCIQXLDevice, ssd.qxl);
int i;
int qxl_i;
qemu_mutex_lock(&qxl->ssd.lock);
if (surface_id != 0 || !qxl->render_update_cookie_num) {
qemu_mutex_unlock(&qxl->ssd.lock);
return;
}
if (qxl->num_dirty_rects + num_updated_rects > QXL_NUM_DIRTY_RECTS) {
/*
* overflow - treat this as a full update. Not expected to be common.
*/
dprint(qxl, 1, "%s: overflow of dirty rects\n", __func__);
qxl->guest_primary.resized = 1;
}
if (qxl->guest_primary.resized) {
/*
* Don't bother copying or scheduling the bh since we will flip
* the whole area anyway on completion of the update_area async call
*/
qemu_mutex_unlock(&qxl->ssd.lock);
return;
}
qxl_i = qxl->num_dirty_rects;
for (i = 0; i < num_updated_rects; i++) {
qxl->dirty[qxl_i++] = dirty[i];
}
qxl->num_dirty_rects += num_updated_rects;
dprint(qxl, 1, "%s: scheduling update_area_bh, #dirty %d\n",
__func__, qxl->num_dirty_rects);
qemu_bh_schedule(qxl->update_area_bh);
qemu_mutex_unlock(&qxl->ssd.lock);
}
/* called from spice server thread context only */
static void interface_async_complete(QXLInstance *sin, uint64_t cookie_token)
{
@ -769,13 +817,17 @@ static void interface_async_complete(QXLInstance *sin, uint64_t cookie_token)
switch (cookie->type) {
case QXL_COOKIE_TYPE_IO:
interface_async_complete_io(qxl, cookie);
g_free(cookie);
break;
case QXL_COOKIE_TYPE_RENDER_UPDATE_AREA:
qxl_render_update_area_done(qxl, cookie);
break;
default:
fprintf(stderr, "qxl: %s: unexpected cookie type %d\n",
__func__, cookie->type);
}
g_free(cookie);
}
}
static const QXLInterface qxl_interface = {
.base.type = SPICE_INTERFACE_QXL,
@ -797,6 +849,7 @@ static const QXLInterface qxl_interface = {
.notify_update = interface_notify_update,
.flush_resources = interface_flush_resources,
.async_complete = interface_async_complete,
.update_area_complete = interface_update_area_complete,
};
static void qxl_enter_vga_mode(PCIQXLDevice *d)
@ -1213,11 +1266,17 @@ async_common:
switch (io_port) {
case QXL_IO_UPDATE_AREA:
{
QXLCookie *cookie = NULL;
QXLRect update = d->ram->update_area;
if (async == QXL_ASYNC) {
cookie = qxl_cookie_new(QXL_COOKIE_TYPE_IO,
QXL_IO_UPDATE_AREA_ASYNC);
cookie->u.area = update;
}
qxl_spice_update_area(d, d->ram->update_surface,
&update, NULL, 0, 0, async,
qxl_cookie_new(QXL_COOKIE_TYPE_IO,
QXL_IO_UPDATE_AREA_ASYNC));
cookie ? &cookie->u.area : &update,
NULL, 0, 0, async, cookie);
break;
}
case QXL_IO_NOTIFY_CMD:
@ -1649,6 +1708,8 @@ static int qxl_init_common(PCIQXLDevice *qxl)
init_pipe_signaling(qxl);
qxl_reset_state(qxl);
qxl->update_area_bh = qemu_bh_new(qxl_render_update_area_bh, qxl);
return 0;
}

10
hw/qxl.h
View File

@ -18,6 +18,8 @@ enum qxl_mode {
#define QXL_UNDEFINED_IO UINT32_MAX
#define QXL_NUM_DIRTY_RECTS 64
typedef struct PCIQXLDevice {
PCIDevice pci;
SimpleSpiceDisplay ssd;
@ -93,6 +95,12 @@ typedef struct PCIQXLDevice {
/* user-friendly properties (in megabytes) */
uint32_t ram_size_mb;
uint32_t vram_size_mb;
/* qxl_render_update state */
int render_update_cookie_num;
int num_dirty_rects;
QXLRect dirty[QXL_NUM_DIRTY_RECTS];
QEMUBH *update_area_bh;
} PCIQXLDevice;
#define PANIC_ON(x) if ((x)) { \
@ -134,3 +142,5 @@ void qxl_log_command(PCIQXLDevice *qxl, const char *ring, QXLCommandExt *ext);
void qxl_render_resize(PCIQXLDevice *qxl);
void qxl_render_update(PCIQXLDevice *qxl);
void qxl_render_cursor(PCIQXLDevice *qxl, QXLCommandExt *ext);
void qxl_render_update_area_done(PCIQXLDevice *qxl, QXLCookie *cookie);
void qxl_render_update_area_bh(void *opaque);

6
ui/spice-display.h
View File

@ -50,6 +50,7 @@ typedef enum qxl_async_io {
enum {
QXL_COOKIE_TYPE_IO,
QXL_COOKIE_TYPE_RENDER_UPDATE_AREA,
};
typedef struct QXLCookie {
@ -57,6 +58,11 @@ typedef struct QXLCookie {
uint64_t io;
union {
uint32_t surface_id;
QXLRect area;
struct {
QXLRect area;
int redraw;
} render;
} u;
} QXLCookie;