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qxl.c
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qxl.c
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/*
* Copyright (C) 2010 Red Hat, Inc.
*
* written by Yaniv Kamay, Izik Eidus, Gerd Hoffmann
* maintained by Gerd Hoffmann <kraxel@redhat.com>
*
* 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 <zlib.h>
#include <stdint.h>
#include "qemu-common.h"
#include "qemu/timer.h"
#include "qemu/queue.h"
#include "qemu/atomic.h"
#include "sysemu/sysemu.h"
#include "trace.h"
#include "qxl.h"
/*
* NOTE: SPICE_RING_PROD_ITEM accesses memory on the pci bar and as
* such can be changed by the guest, so to avoid a guest trigerrable
* abort we just qxl_set_guest_bug and set the return to NULL. Still
* it may happen as a result of emulator bug as well.
*/
#undef SPICE_RING_PROD_ITEM
#define SPICE_RING_PROD_ITEM(qxl, r, ret) { \
uint32_t prod = (r)->prod & SPICE_RING_INDEX_MASK(r); \
if (prod >= ARRAY_SIZE((r)->items)) { \
qxl_set_guest_bug(qxl, "SPICE_RING_PROD_ITEM indices mismatch " \
"%u >= %zu", prod, ARRAY_SIZE((r)->items)); \
ret = NULL; \
} else { \
ret = &(r)->items[prod].el; \
} \
}
#undef SPICE_RING_CONS_ITEM
#define SPICE_RING_CONS_ITEM(qxl, r, ret) { \
uint32_t cons = (r)->cons & SPICE_RING_INDEX_MASK(r); \
if (cons >= ARRAY_SIZE((r)->items)) { \
qxl_set_guest_bug(qxl, "SPICE_RING_CONS_ITEM indices mismatch " \
"%u >= %zu", cons, ARRAY_SIZE((r)->items)); \
ret = NULL; \
} else { \
ret = &(r)->items[cons].el; \
} \
}
#undef ALIGN
#define ALIGN(a, b) (((a) + ((b) - 1)) & ~((b) - 1))
#define PIXEL_SIZE 0.2936875 //1280x1024 is 14.8" x 11.9"
#define QXL_MODE(_x, _y, _b, _o) \
{ .x_res = _x, \
.y_res = _y, \
.bits = _b, \
.stride = (_x) * (_b) / 8, \
.x_mili = PIXEL_SIZE * (_x), \
.y_mili = PIXEL_SIZE * (_y), \
.orientation = _o, \
}
#define QXL_MODE_16_32(x_res, y_res, orientation) \
QXL_MODE(x_res, y_res, 16, orientation), \
QXL_MODE(x_res, y_res, 32, orientation)
#define QXL_MODE_EX(x_res, y_res) \
QXL_MODE_16_32(x_res, y_res, 0), \
QXL_MODE_16_32(x_res, y_res, 1)
static QXLMode qxl_modes[] = {
QXL_MODE_EX(640, 480),
QXL_MODE_EX(800, 480),
QXL_MODE_EX(800, 600),
QXL_MODE_EX(832, 624),
QXL_MODE_EX(960, 640),
QXL_MODE_EX(1024, 600),
QXL_MODE_EX(1024, 768),
QXL_MODE_EX(1152, 864),
QXL_MODE_EX(1152, 870),
QXL_MODE_EX(1280, 720),
QXL_MODE_EX(1280, 760),
QXL_MODE_EX(1280, 768),
QXL_MODE_EX(1280, 800),
QXL_MODE_EX(1280, 960),
QXL_MODE_EX(1280, 1024),
QXL_MODE_EX(1360, 768),
QXL_MODE_EX(1366, 768),
QXL_MODE_EX(1400, 1050),
QXL_MODE_EX(1440, 900),
QXL_MODE_EX(1600, 900),
QXL_MODE_EX(1600, 1200),
QXL_MODE_EX(1680, 1050),
QXL_MODE_EX(1920, 1080),
/* these modes need more than 8 MB video memory */
QXL_MODE_EX(1920, 1200),
QXL_MODE_EX(1920, 1440),
QXL_MODE_EX(2000, 2000),
QXL_MODE_EX(2048, 1536),
QXL_MODE_EX(2048, 2048),
QXL_MODE_EX(2560, 1440),
QXL_MODE_EX(2560, 1600),
/* these modes need more than 16 MB video memory */
QXL_MODE_EX(2560, 2048),
QXL_MODE_EX(2800, 2100),
QXL_MODE_EX(3200, 2400),
/* these modes need more than 32 MB video memory */
QXL_MODE_EX(3840, 2160), /* 4k mainstream */
QXL_MODE_EX(4096, 2160), /* 4k */
/* these modes need more than 64 MB video memory */
QXL_MODE_EX(7680, 4320), /* 8k mainstream */
/* these modes need more than 128 MB video memory */
QXL_MODE_EX(8192, 4320), /* 8k */
};
static void qxl_send_events(PCIQXLDevice *d, uint32_t events);
static int qxl_destroy_primary(PCIQXLDevice *d, qxl_async_io async);
static void qxl_reset_memslots(PCIQXLDevice *d);
static void qxl_reset_surfaces(PCIQXLDevice *d);
static void qxl_ring_set_dirty(PCIQXLDevice *qxl);
static void qxl_hw_update(void *opaque);
void qxl_set_guest_bug(PCIQXLDevice *qxl, const char *msg, ...)
{
trace_qxl_set_guest_bug(qxl->id);
qxl_send_events(qxl, QXL_INTERRUPT_ERROR);
qxl->guest_bug = 1;
if (qxl->guestdebug) {
va_list ap;
va_start(ap, msg);
fprintf(stderr, "qxl-%d: guest bug: ", qxl->id);
vfprintf(stderr, msg, ap);
fprintf(stderr, "\n");
va_end(ap);
}
}
static void qxl_clear_guest_bug(PCIQXLDevice *qxl)
{
qxl->guest_bug = 0;
}
void qxl_spice_update_area(PCIQXLDevice *qxl, uint32_t surface_id,
struct QXLRect *area, struct QXLRect *dirty_rects,
uint32_t num_dirty_rects,
uint32_t clear_dirty_region,
qxl_async_io async, struct QXLCookie *cookie)
{
trace_qxl_spice_update_area(qxl->id, surface_id, area->left, area->right,
area->top, area->bottom);
trace_qxl_spice_update_area_rest(qxl->id, num_dirty_rects,
clear_dirty_region);
if (async == QXL_SYNC) {
spice_qxl_update_area(&qxl->ssd.qxl, surface_id, area,
dirty_rects, num_dirty_rects, clear_dirty_region);
} else {
assert(cookie != NULL);
spice_qxl_update_area_async(&qxl->ssd.qxl, surface_id, area,
clear_dirty_region, (uintptr_t)cookie);
}
}
static void qxl_spice_destroy_surface_wait_complete(PCIQXLDevice *qxl,
uint32_t id)
{
trace_qxl_spice_destroy_surface_wait_complete(qxl->id, id);
qemu_mutex_lock(&qxl->track_lock);
qxl->guest_surfaces.cmds[id] = 0;
qxl->guest_surfaces.count--;
qemu_mutex_unlock(&qxl->track_lock);
}
static void qxl_spice_destroy_surface_wait(PCIQXLDevice *qxl, uint32_t id,
qxl_async_io async)
{
QXLCookie *cookie;
trace_qxl_spice_destroy_surface_wait(qxl->id, id, async);
if (async) {
cookie = qxl_cookie_new(QXL_COOKIE_TYPE_IO,
QXL_IO_DESTROY_SURFACE_ASYNC);
cookie->u.surface_id = id;
spice_qxl_destroy_surface_async(&qxl->ssd.qxl, id, (uintptr_t)cookie);
} else {
spice_qxl_destroy_surface_wait(&qxl->ssd.qxl, id);
qxl_spice_destroy_surface_wait_complete(qxl, id);
}
}
static void qxl_spice_flush_surfaces_async(PCIQXLDevice *qxl)
{
trace_qxl_spice_flush_surfaces_async(qxl->id, qxl->guest_surfaces.count,
qxl->num_free_res);
spice_qxl_flush_surfaces_async(&qxl->ssd.qxl,
(uintptr_t)qxl_cookie_new(QXL_COOKIE_TYPE_IO,
QXL_IO_FLUSH_SURFACES_ASYNC));
}
void qxl_spice_loadvm_commands(PCIQXLDevice *qxl, struct QXLCommandExt *ext,
uint32_t count)
{
trace_qxl_spice_loadvm_commands(qxl->id, ext, count);
spice_qxl_loadvm_commands(&qxl->ssd.qxl, ext, count);
}
void qxl_spice_oom(PCIQXLDevice *qxl)
{
trace_qxl_spice_oom(qxl->id);
spice_qxl_oom(&qxl->ssd.qxl);
}
void qxl_spice_reset_memslots(PCIQXLDevice *qxl)
{
trace_qxl_spice_reset_memslots(qxl->id);
spice_qxl_reset_memslots(&qxl->ssd.qxl);
}
static void qxl_spice_destroy_surfaces_complete(PCIQXLDevice *qxl)
{
trace_qxl_spice_destroy_surfaces_complete(qxl->id);
qemu_mutex_lock(&qxl->track_lock);
memset(qxl->guest_surfaces.cmds, 0,
sizeof(qxl->guest_surfaces.cmds[0]) * qxl->ssd.num_surfaces);
qxl->guest_surfaces.count = 0;
qemu_mutex_unlock(&qxl->track_lock);
}
static void qxl_spice_destroy_surfaces(PCIQXLDevice *qxl, qxl_async_io async)
{
trace_qxl_spice_destroy_surfaces(qxl->id, async);
if (async) {
spice_qxl_destroy_surfaces_async(&qxl->ssd.qxl,
(uintptr_t)qxl_cookie_new(QXL_COOKIE_TYPE_IO,
QXL_IO_DESTROY_ALL_SURFACES_ASYNC));
} else {
spice_qxl_destroy_surfaces(&qxl->ssd.qxl);
qxl_spice_destroy_surfaces_complete(qxl);
}
}
static void qxl_spice_monitors_config_async(PCIQXLDevice *qxl, int replay)
{
trace_qxl_spice_monitors_config(qxl->id);
if (replay) {
/*
* don't use QXL_COOKIE_TYPE_IO:
* - we are not running yet (post_load), we will assert
* in send_events
* - this is not a guest io, but a reply, so async_io isn't set.
*/
spice_qxl_monitors_config_async(&qxl->ssd.qxl,
qxl->guest_monitors_config,
MEMSLOT_GROUP_GUEST,
(uintptr_t)qxl_cookie_new(
QXL_COOKIE_TYPE_POST_LOAD_MONITORS_CONFIG,
0));
} else {
#if SPICE_SERVER_VERSION >= 0x000c06 /* release 0.12.6 */
if (qxl->max_outputs) {
spice_qxl_set_max_monitors(&qxl->ssd.qxl, qxl->max_outputs);
}
#endif
qxl->guest_monitors_config = qxl->ram->monitors_config;
spice_qxl_monitors_config_async(&qxl->ssd.qxl,
qxl->ram->monitors_config,
MEMSLOT_GROUP_GUEST,
(uintptr_t)qxl_cookie_new(QXL_COOKIE_TYPE_IO,
QXL_IO_MONITORS_CONFIG_ASYNC));
}
}
void qxl_spice_reset_image_cache(PCIQXLDevice *qxl)
{
trace_qxl_spice_reset_image_cache(qxl->id);
spice_qxl_reset_image_cache(&qxl->ssd.qxl);
}
void qxl_spice_reset_cursor(PCIQXLDevice *qxl)
{
trace_qxl_spice_reset_cursor(qxl->id);
spice_qxl_reset_cursor(&qxl->ssd.qxl);
qemu_mutex_lock(&qxl->track_lock);
qxl->guest_cursor = 0;
qemu_mutex_unlock(&qxl->track_lock);
if (qxl->ssd.cursor) {
cursor_put(qxl->ssd.cursor);
}
qxl->ssd.cursor = cursor_builtin_hidden();
}
static ram_addr_t qxl_rom_size(void)
{
uint32_t required_rom_size = sizeof(QXLRom) + sizeof(QXLModes) +
sizeof(qxl_modes);
uint32_t rom_size = 8192; /* two pages */
QEMU_BUILD_BUG_ON(required_rom_size > rom_size);
return rom_size;
}
static void init_qxl_rom(PCIQXLDevice *d)
{
QXLRom *rom = memory_region_get_ram_ptr(&d->rom_bar);
QXLModes *modes = (QXLModes *)(rom + 1);
uint32_t ram_header_size;
uint32_t surface0_area_size;
uint32_t num_pages;
uint32_t fb;
int i, n;
memset(rom, 0, d->rom_size);
rom->magic = cpu_to_le32(QXL_ROM_MAGIC);
rom->id = cpu_to_le32(d->id);
rom->log_level = cpu_to_le32(d->guestdebug);
rom->modes_offset = cpu_to_le32(sizeof(QXLRom));
rom->slot_gen_bits = MEMSLOT_GENERATION_BITS;
rom->slot_id_bits = MEMSLOT_SLOT_BITS;
rom->slots_start = 1;
rom->slots_end = NUM_MEMSLOTS - 1;
rom->n_surfaces = cpu_to_le32(d->ssd.num_surfaces);
for (i = 0, n = 0; i < ARRAY_SIZE(qxl_modes); i++) {
fb = qxl_modes[i].y_res * qxl_modes[i].stride;
if (fb > d->vgamem_size) {
continue;
}
modes->modes[n].id = cpu_to_le32(i);
modes->modes[n].x_res = cpu_to_le32(qxl_modes[i].x_res);
modes->modes[n].y_res = cpu_to_le32(qxl_modes[i].y_res);
modes->modes[n].bits = cpu_to_le32(qxl_modes[i].bits);
modes->modes[n].stride = cpu_to_le32(qxl_modes[i].stride);
modes->modes[n].x_mili = cpu_to_le32(qxl_modes[i].x_mili);
modes->modes[n].y_mili = cpu_to_le32(qxl_modes[i].y_mili);
modes->modes[n].orientation = cpu_to_le32(qxl_modes[i].orientation);
n++;
}
modes->n_modes = cpu_to_le32(n);
ram_header_size = ALIGN(sizeof(QXLRam), 4096);
surface0_area_size = ALIGN(d->vgamem_size, 4096);
num_pages = d->vga.vram_size;
num_pages -= ram_header_size;
num_pages -= surface0_area_size;
num_pages = num_pages / QXL_PAGE_SIZE;
assert(ram_header_size + surface0_area_size <= d->vga.vram_size);
rom->draw_area_offset = cpu_to_le32(0);
rom->surface0_area_size = cpu_to_le32(surface0_area_size);
rom->pages_offset = cpu_to_le32(surface0_area_size);
rom->num_pages = cpu_to_le32(num_pages);
rom->ram_header_offset = cpu_to_le32(d->vga.vram_size - ram_header_size);
d->shadow_rom = *rom;
d->rom = rom;
d->modes = modes;
}
static void init_qxl_ram(PCIQXLDevice *d)
{
uint8_t *buf;
uint64_t *item;
buf = d->vga.vram_ptr;
d->ram = (QXLRam *)(buf + le32_to_cpu(d->shadow_rom.ram_header_offset));
d->ram->magic = cpu_to_le32(QXL_RAM_MAGIC);
d->ram->int_pending = cpu_to_le32(0);
d->ram->int_mask = cpu_to_le32(0);
d->ram->update_surface = 0;
d->ram->monitors_config = 0;
SPICE_RING_INIT(&d->ram->cmd_ring);
SPICE_RING_INIT(&d->ram->cursor_ring);
SPICE_RING_INIT(&d->ram->release_ring);
SPICE_RING_PROD_ITEM(d, &d->ram->release_ring, item);
assert(item);
*item = 0;
qxl_ring_set_dirty(d);
}
/* can be called from spice server thread context */
static void qxl_set_dirty(MemoryRegion *mr, ram_addr_t addr, ram_addr_t end)
{
memory_region_set_dirty(mr, addr, end - addr);
}
static void qxl_rom_set_dirty(PCIQXLDevice *qxl)
{
qxl_set_dirty(&qxl->rom_bar, 0, qxl->rom_size);
}
/* called from spice server thread context only */
static void qxl_ram_set_dirty(PCIQXLDevice *qxl, void *ptr)
{
void *base = qxl->vga.vram_ptr;
intptr_t offset;
offset = ptr - base;
assert(offset < qxl->vga.vram_size);
qxl_set_dirty(&qxl->vga.vram, offset, offset + 3);
}
/* can be called from spice server thread context */
static void qxl_ring_set_dirty(PCIQXLDevice *qxl)
{
ram_addr_t addr = qxl->shadow_rom.ram_header_offset;
ram_addr_t end = qxl->vga.vram_size;
qxl_set_dirty(&qxl->vga.vram, addr, end);
}
/*
* keep track of some command state, for savevm/loadvm.
* called from spice server thread context only
*/
static int qxl_track_command(PCIQXLDevice *qxl, struct QXLCommandExt *ext)
{
switch (le32_to_cpu(ext->cmd.type)) {
case QXL_CMD_SURFACE:
{
QXLSurfaceCmd *cmd = qxl_phys2virt(qxl, ext->cmd.data, ext->group_id);
if (!cmd) {
return 1;
}
uint32_t id = le32_to_cpu(cmd->surface_id);
if (id >= qxl->ssd.num_surfaces) {
qxl_set_guest_bug(qxl, "QXL_CMD_SURFACE id %d >= %d", id,
qxl->ssd.num_surfaces);
return 1;
}
if (cmd->type == QXL_SURFACE_CMD_CREATE &&
(cmd->u.surface_create.stride & 0x03) != 0) {
qxl_set_guest_bug(qxl, "QXL_CMD_SURFACE stride = %d %% 4 != 0\n",
cmd->u.surface_create.stride);
return 1;
}
qemu_mutex_lock(&qxl->track_lock);
if (cmd->type == QXL_SURFACE_CMD_CREATE) {
qxl->guest_surfaces.cmds[id] = ext->cmd.data;
qxl->guest_surfaces.count++;
if (qxl->guest_surfaces.max < qxl->guest_surfaces.count)
qxl->guest_surfaces.max = qxl->guest_surfaces.count;
}
if (cmd->type == QXL_SURFACE_CMD_DESTROY) {
qxl->guest_surfaces.cmds[id] = 0;
qxl->guest_surfaces.count--;
}
qemu_mutex_unlock(&qxl->track_lock);
break;
}
case QXL_CMD_CURSOR:
{
QXLCursorCmd *cmd = qxl_phys2virt(qxl, ext->cmd.data, ext->group_id);
if (!cmd) {
return 1;
}
if (cmd->type == QXL_CURSOR_SET) {
qemu_mutex_lock(&qxl->track_lock);
qxl->guest_cursor = ext->cmd.data;
qemu_mutex_unlock(&qxl->track_lock);
}
break;
}
}
return 0;
}
/* spice display interface callbacks */
static void interface_attach_worker(QXLInstance *sin, QXLWorker *qxl_worker)
{
PCIQXLDevice *qxl = container_of(sin, PCIQXLDevice, ssd.qxl);
trace_qxl_interface_attach_worker(qxl->id);
qxl->ssd.worker = qxl_worker;
}
static void interface_set_compression_level(QXLInstance *sin, int level)
{
PCIQXLDevice *qxl = container_of(sin, PCIQXLDevice, ssd.qxl);
trace_qxl_interface_set_compression_level(qxl->id, level);
qxl->shadow_rom.compression_level = cpu_to_le32(level);
qxl->rom->compression_level = cpu_to_le32(level);
qxl_rom_set_dirty(qxl);
}
static void interface_set_mm_time(QXLInstance *sin, uint32_t mm_time)
{
PCIQXLDevice *qxl = container_of(sin, PCIQXLDevice, ssd.qxl);
if (!qemu_spice_display_is_running(&qxl->ssd)) {
return;
}
trace_qxl_interface_set_mm_time(qxl->id, mm_time);
qxl->shadow_rom.mm_clock = cpu_to_le32(mm_time);
qxl->rom->mm_clock = cpu_to_le32(mm_time);
qxl_rom_set_dirty(qxl);
}
static void interface_get_init_info(QXLInstance *sin, QXLDevInitInfo *info)
{
PCIQXLDevice *qxl = container_of(sin, PCIQXLDevice, ssd.qxl);
trace_qxl_interface_get_init_info(qxl->id);
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 =
le32_to_cpu(qxl->shadow_rom.num_pages) << QXL_PAGE_BITS;
info->n_surfaces = qxl->ssd.num_surfaces;
}
static const char *qxl_mode_to_string(int mode)
{
switch (mode) {
case QXL_MODE_COMPAT:
return "compat";
case QXL_MODE_NATIVE:
return "native";
case QXL_MODE_UNDEFINED:
return "undefined";
case QXL_MODE_VGA:
return "vga";
}
return "INVALID";
}
static const char *io_port_to_string(uint32_t io_port)
{
if (io_port >= QXL_IO_RANGE_SIZE) {
return "out of range";
}
static const char *io_port_to_string[QXL_IO_RANGE_SIZE + 1] = {
[QXL_IO_NOTIFY_CMD] = "QXL_IO_NOTIFY_CMD",
[QXL_IO_NOTIFY_CURSOR] = "QXL_IO_NOTIFY_CURSOR",
[QXL_IO_UPDATE_AREA] = "QXL_IO_UPDATE_AREA",
[QXL_IO_UPDATE_IRQ] = "QXL_IO_UPDATE_IRQ",
[QXL_IO_NOTIFY_OOM] = "QXL_IO_NOTIFY_OOM",
[QXL_IO_RESET] = "QXL_IO_RESET",
[QXL_IO_SET_MODE] = "QXL_IO_SET_MODE",
[QXL_IO_LOG] = "QXL_IO_LOG",
[QXL_IO_MEMSLOT_ADD] = "QXL_IO_MEMSLOT_ADD",
[QXL_IO_MEMSLOT_DEL] = "QXL_IO_MEMSLOT_DEL",
[QXL_IO_DETACH_PRIMARY] = "QXL_IO_DETACH_PRIMARY",
[QXL_IO_ATTACH_PRIMARY] = "QXL_IO_ATTACH_PRIMARY",
[QXL_IO_CREATE_PRIMARY] = "QXL_IO_CREATE_PRIMARY",
[QXL_IO_DESTROY_PRIMARY] = "QXL_IO_DESTROY_PRIMARY",
[QXL_IO_DESTROY_SURFACE_WAIT] = "QXL_IO_DESTROY_SURFACE_WAIT",
[QXL_IO_DESTROY_ALL_SURFACES] = "QXL_IO_DESTROY_ALL_SURFACES",
[QXL_IO_UPDATE_AREA_ASYNC] = "QXL_IO_UPDATE_AREA_ASYNC",
[QXL_IO_MEMSLOT_ADD_ASYNC] = "QXL_IO_MEMSLOT_ADD_ASYNC",
[QXL_IO_CREATE_PRIMARY_ASYNC] = "QXL_IO_CREATE_PRIMARY_ASYNC",
[QXL_IO_DESTROY_PRIMARY_ASYNC] = "QXL_IO_DESTROY_PRIMARY_ASYNC",
[QXL_IO_DESTROY_SURFACE_ASYNC] = "QXL_IO_DESTROY_SURFACE_ASYNC",
[QXL_IO_DESTROY_ALL_SURFACES_ASYNC]
= "QXL_IO_DESTROY_ALL_SURFACES_ASYNC",
[QXL_IO_FLUSH_SURFACES_ASYNC] = "QXL_IO_FLUSH_SURFACES_ASYNC",
[QXL_IO_FLUSH_RELEASE] = "QXL_IO_FLUSH_RELEASE",
[QXL_IO_MONITORS_CONFIG_ASYNC] = "QXL_IO_MONITORS_CONFIG_ASYNC",
};
return io_port_to_string[io_port];
}
/* called from spice server thread context only */
static int interface_get_command(QXLInstance *sin, struct QXLCommandExt *ext)
{
PCIQXLDevice *qxl = container_of(sin, PCIQXLDevice, ssd.qxl);
SimpleSpiceUpdate *update;
QXLCommandRing *ring;
QXLCommand *cmd;
int notify, ret;
trace_qxl_ring_command_check(qxl->id, qxl_mode_to_string(qxl->mode));
switch (qxl->mode) {
case QXL_MODE_VGA:
ret = false;
qemu_mutex_lock(&qxl->ssd.lock);
update = QTAILQ_FIRST(&qxl->ssd.updates);
if (update != NULL) {
QTAILQ_REMOVE(&qxl->ssd.updates, update, next);
*ext = update->ext;
ret = true;
}
qemu_mutex_unlock(&qxl->ssd.lock);
if (ret) {
trace_qxl_ring_command_get(qxl->id, qxl_mode_to_string(qxl->mode));
qxl_log_command(qxl, "vga", ext);
}
return ret;
case QXL_MODE_COMPAT:
case QXL_MODE_NATIVE:
case QXL_MODE_UNDEFINED:
ring = &qxl->ram->cmd_ring;
if (qxl->guest_bug || SPICE_RING_IS_EMPTY(ring)) {
return false;
}
SPICE_RING_CONS_ITEM(qxl, ring, cmd);
if (!cmd) {
return false;
}
ext->cmd = *cmd;
ext->group_id = MEMSLOT_GROUP_GUEST;
ext->flags = qxl->cmdflags;
SPICE_RING_POP(ring, notify);
qxl_ring_set_dirty(qxl);
if (notify) {
qxl_send_events(qxl, QXL_INTERRUPT_DISPLAY);
}
qxl->guest_primary.commands++;
qxl_track_command(qxl, ext);
qxl_log_command(qxl, "cmd", ext);
trace_qxl_ring_command_get(qxl->id, qxl_mode_to_string(qxl->mode));
return true;
default:
return false;
}
}
/* called from spice server thread context only */
static int interface_req_cmd_notification(QXLInstance *sin)
{
PCIQXLDevice *qxl = container_of(sin, PCIQXLDevice, ssd.qxl);
int wait = 1;
trace_qxl_ring_command_req_notification(qxl->id);
switch (qxl->mode) {
case QXL_MODE_COMPAT:
case QXL_MODE_NATIVE:
case QXL_MODE_UNDEFINED:
SPICE_RING_CONS_WAIT(&qxl->ram->cmd_ring, wait);
qxl_ring_set_dirty(qxl);
break;
default:
/* nothing */
break;
}
return wait;
}
/* called from spice server thread context only */
static inline void qxl_push_free_res(PCIQXLDevice *d, int flush)
{
QXLReleaseRing *ring = &d->ram->release_ring;
uint64_t *item;
int notify;
#define QXL_FREE_BUNCH_SIZE 32
if (ring->prod - ring->cons + 1 == ring->num_items) {
/* ring full -- can't push */
return;
}
if (!flush && d->oom_running) {
/* collect everything from oom handler before pushing */
return;
}
if (!flush && d->num_free_res < QXL_FREE_BUNCH_SIZE) {
/* collect a bit more before pushing */
return;
}
SPICE_RING_PUSH(ring, notify);
trace_qxl_ring_res_push(d->id, qxl_mode_to_string(d->mode),
d->guest_surfaces.count, d->num_free_res,
d->last_release, notify ? "yes" : "no");
trace_qxl_ring_res_push_rest(d->id, ring->prod - ring->cons,
ring->num_items, ring->prod, ring->cons);
if (notify) {
qxl_send_events(d, QXL_INTERRUPT_DISPLAY);
}
SPICE_RING_PROD_ITEM(d, ring, item);
if (!item) {
return;
}
*item = 0;
d->num_free_res = 0;
d->last_release = NULL;
qxl_ring_set_dirty(d);
}
/* called from spice server thread context only */
static void interface_release_resource(QXLInstance *sin,
QXLReleaseInfoExt ext)
{
PCIQXLDevice *qxl = container_of(sin, PCIQXLDevice, ssd.qxl);
QXLReleaseRing *ring;
uint64_t *item, id;
if (ext.group_id == MEMSLOT_GROUP_HOST) {
/* host group -> vga mode update request */
QXLCommandExt *cmdext = (void *)(intptr_t)(ext.info->id);
SimpleSpiceUpdate *update;
g_assert(cmdext->cmd.type == QXL_CMD_DRAW);
update = container_of(cmdext, SimpleSpiceUpdate, ext);
qemu_spice_destroy_update(&qxl->ssd, update);
return;
}
/*
* ext->info points into guest-visible memory
* pci bar 0, $command.release_info
*/
ring = &qxl->ram->release_ring;
SPICE_RING_PROD_ITEM(qxl, ring, item);
if (!item) {
return;
}
if (*item == 0) {
/* stick head into the ring */
id = ext.info->id;
ext.info->next = 0;
qxl_ram_set_dirty(qxl, &ext.info->next);
*item = id;
qxl_ring_set_dirty(qxl);
} else {
/* append item to the list */
qxl->last_release->next = ext.info->id;
qxl_ram_set_dirty(qxl, &qxl->last_release->next);
ext.info->next = 0;
qxl_ram_set_dirty(qxl, &ext.info->next);
}
qxl->last_release = ext.info;
qxl->num_free_res++;
trace_qxl_ring_res_put(qxl->id, qxl->num_free_res);
qxl_push_free_res(qxl, 0);
}
/* called from spice server thread context only */
static int interface_get_cursor_command(QXLInstance *sin, struct QXLCommandExt *ext)
{
PCIQXLDevice *qxl = container_of(sin, PCIQXLDevice, ssd.qxl);
QXLCursorRing *ring;
QXLCommand *cmd;
int notify;
trace_qxl_ring_cursor_check(qxl->id, qxl_mode_to_string(qxl->mode));
switch (qxl->mode) {
case QXL_MODE_COMPAT:
case QXL_MODE_NATIVE:
case QXL_MODE_UNDEFINED:
ring = &qxl->ram->cursor_ring;
if (SPICE_RING_IS_EMPTY(ring)) {
return false;
}
SPICE_RING_CONS_ITEM(qxl, ring, cmd);
if (!cmd) {
return false;
}
ext->cmd = *cmd;
ext->group_id = MEMSLOT_GROUP_GUEST;
ext->flags = qxl->cmdflags;
SPICE_RING_POP(ring, notify);
qxl_ring_set_dirty(qxl);
if (notify) {
qxl_send_events(qxl, QXL_INTERRUPT_CURSOR);
}
qxl->guest_primary.commands++;
qxl_track_command(qxl, ext);
qxl_log_command(qxl, "csr", ext);
if (qxl->id == 0) {
qxl_render_cursor(qxl, ext);
}
trace_qxl_ring_cursor_get(qxl->id, qxl_mode_to_string(qxl->mode));
return true;
default:
return false;
}
}
/* called from spice server thread context only */
static int interface_req_cursor_notification(QXLInstance *sin)
{
PCIQXLDevice *qxl = container_of(sin, PCIQXLDevice, ssd.qxl);
int wait = 1;
trace_qxl_ring_cursor_req_notification(qxl->id);
switch (qxl->mode) {
case QXL_MODE_COMPAT:
case QXL_MODE_NATIVE:
case QXL_MODE_UNDEFINED:
SPICE_RING_CONS_WAIT(&qxl->ram->cursor_ring, wait);
qxl_ring_set_dirty(qxl);
break;
default:
/* nothing */
break;
}
return wait;
}
/* called from spice server thread context */
static void interface_notify_update(QXLInstance *sin, uint32_t update_id)
{
/*
* Called by spice-server as a result of a QXL_CMD_UPDATE which is not in
* use by xf86-video-qxl and is defined out in the qxl windows driver.
* Probably was at some earlier version that is prior to git start (2009),
* and is still guest trigerrable.
*/
fprintf(stderr, "%s: deprecated\n", __func__);
}
/* called from spice server thread context only */
static int interface_flush_resources(QXLInstance *sin)
{
PCIQXLDevice *qxl = container_of(sin, PCIQXLDevice, ssd.qxl);
int ret;
ret = qxl->num_free_res;
if (ret) {
qxl_push_free_res(qxl, 1);
}
return ret;
}
static void qxl_create_guest_primary_complete(PCIQXLDevice *d);
/* called from spice server thread context only */
static void interface_async_complete_io(PCIQXLDevice *qxl, QXLCookie *cookie)
{
uint32_t current_async;
qemu_mutex_lock(&qxl->async_lock);
current_async = qxl->current_async;
qxl->current_async = QXL_UNDEFINED_IO;
qemu_mutex_unlock(&qxl->async_lock);
trace_qxl_interface_async_complete_io(qxl->id, current_async, cookie);
if (!cookie) {
fprintf(stderr, "qxl: %s: error, cookie is NULL\n", __func__);
return;
}
if (cookie && current_async != cookie->io) {
fprintf(stderr,
"qxl: %s: error: current_async = %d != %"
PRId64 " = cookie->io\n", __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:
case QXL_IO_MONITORS_CONFIG_ASYNC:
break;
case QXL_IO_CREATE_PRIMARY_ASYNC:
qxl_create_guest_primary_complete(qxl);
break;
case QXL_IO_DESTROY_ALL_SURFACES_ASYNC:
qxl_spice_destroy_surfaces_complete(qxl);
break;
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;
}
trace_qxl_interface_update_area_complete(qxl->id, surface_id, dirty->left,
dirty->right, dirty->top, dirty->bottom);
trace_qxl_interface_update_area_complete_rest(qxl->id, num_updated_rects);
if (qxl->num_dirty_rects + num_updated_rects > QXL_NUM_DIRTY_RECTS) {
/*
* overflow - treat this as a full update. Not expected to be common.
*/
trace_qxl_interface_update_area_complete_overflow(qxl->id,
QXL_NUM_DIRTY_RECTS);
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;
trace_qxl_interface_update_area_complete_schedule_bh(qxl->id,
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)
{
PCIQXLDevice *qxl = container_of(sin, PCIQXLDevice, ssd.qxl);
QXLCookie *cookie = (QXLCookie *)(uintptr_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;
case QXL_COOKIE_TYPE_POST_LOAD_MONITORS_CONFIG:
break;
default:
fprintf(stderr, "qxl: %s: unexpected cookie type %d\n",
__func__, cookie->type);
g_free(cookie);
}
}
/* called from spice server thread context only */
static void interface_set_client_capabilities(QXLInstance *sin,
uint8_t client_present,
uint8_t caps[58])
{
PCIQXLDevice *qxl = container_of(sin, PCIQXLDevice, ssd.qxl);
if (qxl->revision < 4) {
trace_qxl_set_client_capabilities_unsupported_by_revision(qxl->id,
qxl->revision);
return;
}
if (runstate_check(RUN_STATE_INMIGRATE) ||
runstate_check(RUN_STATE_POSTMIGRATE)) {
return;
}
qxl->shadow_rom.client_present = client_present;
memcpy(qxl->shadow_rom.client_capabilities, caps,
sizeof(qxl->shadow_rom.client_capabilities));
qxl->rom->client_present = client_present;
memcpy(qxl->rom->client_capabilities, caps,
sizeof(qxl->rom->client_capabilities));
qxl_rom_set_dirty(qxl);
qxl_send_events(qxl, QXL_INTERRUPT_CLIENT);
}
static uint32_t qxl_crc32(const uint8_t *p, unsigned len)
{
/*
* zlib xors the seed with 0xffffffff, and xors the result
* again with 0xffffffff; Both are not done with linux's crc32,
* which we want to be compatible with, so undo that.
*/
return crc32(0xffffffff, p, len) ^ 0xffffffff;
}
/* called from main context only */
static int interface_client_monitors_config(QXLInstance *sin,
VDAgentMonitorsConfig *monitors_config)
{
PCIQXLDevice *qxl = container_of(sin, PCIQXLDevice, ssd.qxl);
QXLRom *rom = memory_region_get_ram_ptr(&qxl->rom_bar);
int i;
unsigned max_outputs = ARRAY_SIZE(rom->client_monitors_config.heads);