Re: [Qemu-devel] [PATCH v9 3/5] qxl: add QXL_IO_MONITORS_CONFIG_ASYNC

[Blue Swirl]

On Mon, Aug 20, 2012 at 1:26 PM, Alon Levy <address@hidden> wrote:
> Revision bumped to 4 for new IO support, enabled for spice-server >=
> 0.11.1. New io enabled iff revision is 4. Revision can be set to 4, and
> defaults to 4, iff spice-server >= 0.11.1 && spice-protocol >=
> 0.12.0.
>
> This io calls the corresponding new spice api
> spice_qxl_monitors_config_async to let spice-server read a new guest set
> monitors config and notify the client.
>
> On migration reissue spice_qxl_monitors_config_async.
>
> RHBZ: 770842
>
> Signed-off-by: Alon Levy <address@hidden>
> ---
>  configure          |  3 ++
>  hw/qxl.c           | 91 
> ++++++++++++++++++++++++++++++++++++++++++++++++++++--
>  hw/qxl.h           |  8 +++++
>  trace-events       |  1 +
>  ui/spice-display.h |  1 +
>  5 files changed, 101 insertions(+), 3 deletions(-)
>
> diff --git a/configure b/configure
> index cc774b5..ff6443e 100755
> --- a/configure
> +++ b/configure
> @@ -2657,6 +2657,9 @@ EOF
>      spice="yes"
>      libs_softmmu="$libs_softmmu $spice_libs"
>      QEMU_CFLAGS="$QEMU_CFLAGS $spice_cflags"
> +    if $pkg_config --atleast-version=0.12.0 spice-protocol >/dev/null 2>&1; 
> then
> +        QEMU_CFLAGS="$QEMU_CFLAGS -DQXL_HAS_IO_MONITORS_CONFIG_ASYNC"
> +    fi

Still -D instead of adding the #define (with CONFIG_ prefix) to config-host.h.

>    else
>      if test "$spice" = "yes" ; then
>        feature_not_found "spice"
> diff --git a/hw/qxl.c b/hw/qxl.c
> index c978f5e..8823f92 100644
> --- a/hw/qxl.c
> +++ b/hw/qxl.c
> @@ -27,6 +27,11 @@
>
>  #include "qxl.h"
>
> +#ifndef QXL_HAS_IO_MONITORS_CONFIG_ASYNC
> +/* spice-protocol is too old, add missing definitions */
> +#define QXL_IO_MONITORS_CONFIG_ASYNC (QXL_IO_FLUSH_RELEASE + 1)
> +#endif
> +
>  /*
>   * 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
> @@ -249,6 +254,24 @@ static void qxl_spice_destroy_surfaces(PCIQXLDevice 
> *qxl, qxl_async_io async)
>      }
>  }
>
> +static void qxl_spice_monitors_config_async(PCIQXLDevice *qxl)
> +{
> +    trace_qxl_spice_monitors_config(qxl->id);
> +/* 0x000b01 == 0.11.1 */
> +#if SPICE_SERVER_VERSION >= 0x000b01 && \
> +    defined(QXL_HAS_IO_MONITORS_CONFIG_ASYNC)
> +    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));
> +#else
> +    fprintf(stderr, "qxl: too old spice-protocol/spice-server for "
> +            "QXL_IO_MONITORS_CONFIG_ASYNC\n");
> +#endif
> +}
> +
>  void qxl_spice_reset_image_cache(PCIQXLDevice *qxl)
>  {
>      trace_qxl_spice_reset_image_cache(qxl->id);
> @@ -538,6 +561,7 @@ static const char *io_port_to_string(uint32_t io_port)
>                                          = 
> "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];
>  }
> @@ -819,6 +843,7 @@ static void interface_async_complete_io(PCIQXLDevice 
> *qxl, QXLCookie *cookie)
>      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);
> @@ -894,6 +919,8 @@ static void interface_async_complete(QXLInstance *sin, 
> uint64_t cookie_token)
>      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);
> @@ -1314,6 +1341,13 @@ static void ioport_write(void *opaque, 
> target_phys_addr_t addr,
>          return;
>      }
>
> +    if (d->revision <= QXL_REVISION_STABLE_V10 &&
> +        io_port >= QXL_IO_FLUSH_SURFACES_ASYNC) {
> +        qxl_set_guest_bug(d, "unsupported io %d for revision %d\n",
> +            io_port, d->revision);
> +        return;
> +    }
> +
>      switch (io_port) {
>      case QXL_IO_RESET:
>      case QXL_IO_SET_MODE:
> @@ -1333,7 +1367,7 @@ static void ioport_write(void *opaque, 
> target_phys_addr_t addr,
>              io_port, io_port_to_string(io_port));
>          /* be nice to buggy guest drivers */
>          if (io_port >= QXL_IO_UPDATE_AREA_ASYNC &&
> -            io_port <= QXL_IO_DESTROY_ALL_SURFACES_ASYNC) {
> +            io_port < QXL_IO_RANGE_SIZE) {
>              qxl_send_events(d, QXL_INTERRUPT_IO_CMD);
>          }
>          return;
> @@ -1361,6 +1395,7 @@ static void ioport_write(void *opaque, 
> target_phys_addr_t addr,
>          io_port = QXL_IO_DESTROY_ALL_SURFACES;
>          goto async_common;
>      case QXL_IO_FLUSH_SURFACES_ASYNC:
> +    case QXL_IO_MONITORS_CONFIG_ASYNC:
>  async_common:
>          async = QXL_ASYNC;
>          qemu_mutex_lock(&d->async_lock);
> @@ -1502,6 +1537,9 @@ async_common:
>          d->mode = QXL_MODE_UNDEFINED;
>          qxl_spice_destroy_surfaces(d, async);
>          break;
> +    case QXL_IO_MONITORS_CONFIG_ASYNC:
> +        qxl_spice_monitors_config_async(d);
> +        break;
>      default:
>          qxl_set_guest_bug(d, "%s: unexpected ioport=0x%x\n", __func__, 
> io_port);
>      }
> @@ -1797,9 +1835,17 @@ static int qxl_init_common(PCIQXLDevice *qxl)
>          io_size = 16;
>          break;
>      case 3: /* qxl-3 */
> -        pci_device_rev = QXL_DEFAULT_REVISION;
> +        pci_device_rev = QXL_REVISION_STABLE_V10;
> +        io_size = 32; /* PCI region size must be pow2 */
> +        break;
> +/* 0x000b01 == 0.11.1 */
> +#if SPICE_SERVER_VERSION >= 0x000b01 && \
> +        defined(QXL_HAS_IO_MONITORS_CONFIG_ASYNC)
> +    case 4: /* qxl-4 */
> +        pci_device_rev = QXL_REVISION_STABLE_V12;
>          io_size = msb_mask(QXL_IO_RANGE_SIZE * 2 - 1);
>          break;
> +#endif
>      default:
>          error_report("Invalid revision %d for qxl device (max %d)",
>                       qxl->revision, QXL_DEFAULT_REVISION);
> @@ -1998,7 +2044,20 @@ static int qxl_post_load(void *opaque, int version)
>          }
>          qxl_spice_loadvm_commands(d, cmds, out);
>          g_free(cmds);
> -
> +        if (d->guest_monitors_config) {
> +            /*
> +             * 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(&d->ssd.qxl,
> +                    d->guest_monitors_config,
> +                    MEMSLOT_GROUP_GUEST,
> +                    (uintptr_t)qxl_cookie_new(
> +                        QXL_COOKIE_TYPE_POST_LOAD_MONITORS_CONFIG,
> +                        0));
> +        }
>          break;
>      case QXL_MODE_COMPAT:
>          /* note: no need to call qxl_create_memslots, qxl_set_mode
> @@ -2011,6 +2070,14 @@ static int qxl_post_load(void *opaque, int version)
>
>  #define QXL_SAVE_VERSION 21
>
> +static bool qxl_monitors_config_needed(void *opaque)
> +{
> +    PCIQXLDevice *qxl = opaque;
> +
> +    return qxl->guest_monitors_config != 0;
> +}
> +
> +
>  static VMStateDescription qxl_memslot = {
>      .name               = "qxl-memslot",
>      .version_id         = QXL_SAVE_VERSION,
> @@ -2041,6 +2108,16 @@ static VMStateDescription qxl_surface = {
>      }
>  };
>
> +static VMStateDescription qxl_vmstate_monitors_config = {
> +    .name               = "qxl/monitors-config",
> +    .version_id         = 1,
> +    .minimum_version_id = 1,
> +    .fields = (VMStateField []) {
> +        VMSTATE_UINT64(guest_monitors_config, PCIQXLDevice),
> +        VMSTATE_END_OF_LIST()
> +    },
> +};
> +
>  static VMStateDescription qxl_vmstate = {
>      .name               = "qxl",
>      .version_id         = QXL_SAVE_VERSION,
> @@ -2067,6 +2144,14 @@ static VMStateDescription qxl_vmstate = {
>          VMSTATE_UINT64(guest_cursor, PCIQXLDevice),
>          VMSTATE_END_OF_LIST()
>      },
> +    .subsections = (VMStateSubsection []) {
> +        {
> +            .vmsd = &qxl_vmstate_monitors_config,
> +            .needed = qxl_monitors_config_needed,
> +        }, {
> +            /* empty */
> +        }
> +    }
>  };
>
>  static Property qxl_properties[] = {
> diff --git a/hw/qxl.h b/hw/qxl.h
> index 172baf6..b4fbe0e 100644
> --- a/hw/qxl.h
> +++ b/hw/qxl.h
> @@ -71,6 +71,8 @@ typedef struct PCIQXLDevice {
>      } guest_surfaces;
>      QXLPHYSICAL        guest_cursor;
>
> +    QXLPHYSICAL        guest_monitors_config;
> +
>      QemuMutex          track_lock;
>
>      /* thread signaling */
> @@ -128,7 +130,13 @@ typedef struct PCIQXLDevice {
>          }                                                               \
>      } while (0)
>
> +/* 0x000b01 == 0.11.1 */
> +#if SPICE_SERVER_VERSION >= 0x000b01 &&\
> +    defined(QXL_HAS_IO_MONITORS_CONFIG_ASYNC)
> +#define QXL_DEFAULT_REVISION QXL_REVISION_STABLE_V12
> +#else
>  #define QXL_DEFAULT_REVISION QXL_REVISION_STABLE_V10
> +#endif
>
>  /* qxl.c */
>  void *qxl_phys2virt(PCIQXLDevice *qxl, QXLPHYSICAL phys, int group_id);
> diff --git a/trace-events b/trace-events
> index 04b0723..8fcbc50 100644
> --- a/trace-events
> +++ b/trace-events
> @@ -956,6 +956,7 @@ qxl_spice_destroy_surfaces(int qid, int async) "%d 
> async=%d"
>  qxl_spice_destroy_surface_wait_complete(int qid, uint32_t id) "%d sid=%d"
>  qxl_spice_destroy_surface_wait(int qid, uint32_t id, int async) "%d sid=%d 
> async=%d"
>  qxl_spice_flush_surfaces_async(int qid, uint32_t surface_count, uint32_t 
> num_free_res) "%d s#=%d, res#=%d"
> +qxl_spice_monitors_config(int id) "%d"
>  qxl_spice_loadvm_commands(int qid, void *ext, uint32_t count) "%d ext=%p 
> count=%d"
>  qxl_spice_oom(int qid) "%d"
>  qxl_spice_reset_cursor(int qid) "%d"
> diff --git a/ui/spice-display.h b/ui/spice-display.h
> index 12e50b6..7fa095f 100644
> --- a/ui/spice-display.h
> +++ b/ui/spice-display.h
> @@ -51,6 +51,7 @@ typedef enum qxl_async_io {
>  enum {
>      QXL_COOKIE_TYPE_IO,
>      QXL_COOKIE_TYPE_RENDER_UPDATE_AREA,
> +    QXL_COOKIE_TYPE_POST_LOAD_MONITORS_CONFIG,
>  };
>
>  typedef struct QXLCookie {
> --
> 1.7.11.2
>
>