From 12c5674b846dccf1f80fb43b64606721e6f78976 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Wed, 16 May 2012 12:54:05 +0200 Subject: [PATCH] virtio-blk: define VirtIOBlkConf We will have to add another field to the virtio-blk configuration in the next patch. Avoid a proliferation of arguments to virtio_blk_init. Signed-off-by: Paolo Bonzini Signed-off-by: Anthony Liguori --- hw/s390-virtio-bus.c | 7 +++---- hw/s390-virtio-bus.h | 4 ++-- hw/virtio-blk.c | 27 +++++++++++++-------------- hw/virtio-blk.h | 7 +++++++ hw/virtio-pci.c | 7 +++---- hw/virtio-pci.h | 4 ++-- hw/virtio.h | 4 ++-- 7 files changed, 32 insertions(+), 28 deletions(-) diff --git a/hw/s390-virtio-bus.c b/hw/s390-virtio-bus.c index 63ccd5c35a..43647a7a55 100644 --- a/hw/s390-virtio-bus.c +++ b/hw/s390-virtio-bus.c @@ -163,8 +163,7 @@ static int s390_virtio_blk_init(VirtIOS390Device *dev) { VirtIODevice *vdev; - vdev = virtio_blk_init((DeviceState *)dev, &dev->block, - &dev->block_serial); + vdev = virtio_blk_init((DeviceState *)dev, &dev->blk); if (!vdev) { return -1; } @@ -400,8 +399,8 @@ static TypeInfo s390_virtio_net = { }; static Property s390_virtio_blk_properties[] = { - DEFINE_BLOCK_PROPERTIES(VirtIOS390Device, block), - DEFINE_PROP_STRING("serial", VirtIOS390Device, block_serial), + DEFINE_BLOCK_PROPERTIES(VirtIOS390Device, blk.conf), + DEFINE_PROP_STRING("serial", VirtIOS390Device, blk.serial), DEFINE_PROP_END_OF_LIST(), }; diff --git a/hw/s390-virtio-bus.h b/hw/s390-virtio-bus.h index 49e6c462df..4b99d02298 100644 --- a/hw/s390-virtio-bus.h +++ b/hw/s390-virtio-bus.h @@ -17,6 +17,7 @@ * License along with this library; if not, see . */ +#include "virtio-blk.h" #include "virtio-net.h" #include "virtio-serial.h" #include "virtio-scsi.h" @@ -64,8 +65,7 @@ struct VirtIOS390Device { ram_addr_t feat_offs; uint8_t feat_len; VirtIODevice *vdev; - BlockConf block; - char *block_serial; + VirtIOBlkConf blk; NICConf nic; uint32_t host_features; virtio_serial_conf serial; diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c index afd15f2997..960b9cfe3f 100644 --- a/hw/virtio-blk.c +++ b/hw/virtio-blk.c @@ -29,7 +29,7 @@ typedef struct VirtIOBlock void *rq; QEMUBH *bh; BlockConf *conf; - char *serial; + VirtIOBlkConf *blk; unsigned short sector_mask; DeviceState *qdev; } VirtIOBlock; @@ -389,7 +389,7 @@ static void virtio_blk_handle_request(VirtIOBlockReq *req, * terminated by '\0' only when shorter than buffer. */ strncpy(req->elem.in_sg[0].iov_base, - s->serial ? s->serial : "", + s->blk->serial ? s->blk->serial : "", MIN(req->elem.in_sg[0].iov_len, VIRTIO_BLK_ID_BYTES)); virtio_blk_req_complete(req, VIRTIO_BLK_S_OK); g_free(req); @@ -563,28 +563,27 @@ static const BlockDevOps virtio_block_ops = { .resize_cb = virtio_blk_resize, }; -VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf, - char **serial) +VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk) { VirtIOBlock *s; int cylinders, heads, secs; static int virtio_blk_id; DriveInfo *dinfo; - if (!conf->bs) { + if (!blk->conf.bs) { error_report("drive property not set"); return NULL; } - if (!bdrv_is_inserted(conf->bs)) { + if (!bdrv_is_inserted(blk->conf.bs)) { error_report("Device needs media, but drive is empty"); return NULL; } - if (!*serial) { + if (!blk->serial) { /* try to fall back to value set with legacy -drive serial=... */ - dinfo = drive_get_by_blockdev(conf->bs); + dinfo = drive_get_by_blockdev(blk->conf.bs); if (*dinfo->serial) { - *serial = strdup(dinfo->serial); + blk->serial = strdup(dinfo->serial); } } @@ -595,9 +594,9 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf, s->vdev.get_config = virtio_blk_update_config; s->vdev.get_features = virtio_blk_get_features; s->vdev.reset = virtio_blk_reset; - s->bs = conf->bs; - s->conf = conf; - s->serial = *serial; + s->bs = blk->conf.bs; + s->conf = &blk->conf; + s->blk = blk; s->rq = NULL; s->sector_mask = (s->conf->logical_block_size / BDRV_SECTOR_SIZE) - 1; bdrv_guess_geometry(s->bs, &cylinders, &heads, &secs); @@ -609,10 +608,10 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf, register_savevm(dev, "virtio-blk", virtio_blk_id++, 2, virtio_blk_save, virtio_blk_load, s); bdrv_set_dev_ops(s->bs, &virtio_block_ops, s); - bdrv_set_buffer_alignment(s->bs, conf->logical_block_size); + bdrv_set_buffer_alignment(s->bs, s->conf->logical_block_size); bdrv_iostatus_enable(s->bs); - add_boot_device_path(conf->bootindex, dev, "/disk@0,0"); + add_boot_device_path(s->conf->bootindex, dev, "/disk@0,0"); return &s->vdev; } diff --git a/hw/virtio-blk.h b/hw/virtio-blk.h index 244dce45aa..70564a188a 100644 --- a/hw/virtio-blk.h +++ b/hw/virtio-blk.h @@ -97,6 +97,12 @@ struct virtio_scsi_inhdr uint32_t residual; }; +struct VirtIOBlkConf +{ + BlockConf conf; + char *serial; +}; + #ifdef __linux__ #define DEFINE_VIRTIO_BLK_FEATURES(_state, _field) \ DEFINE_VIRTIO_COMMON_FEATURES(_state, _field), \ @@ -105,4 +111,5 @@ struct virtio_scsi_inhdr #define DEFINE_VIRTIO_BLK_FEATURES(_state, _field) \ DEFINE_VIRTIO_COMMON_FEATURES(_state, _field) #endif + #endif diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c index f2f4153ade..a20c3cf6f2 100644 --- a/hw/virtio-pci.c +++ b/hw/virtio-pci.c @@ -697,8 +697,7 @@ static int virtio_blk_init_pci(PCIDevice *pci_dev) proxy->class_code != PCI_CLASS_STORAGE_OTHER) proxy->class_code = PCI_CLASS_STORAGE_SCSI; - vdev = virtio_blk_init(&pci_dev->qdev, &proxy->block, - &proxy->block_serial); + vdev = virtio_blk_init(&pci_dev->qdev, &proxy->blk); if (!vdev) { return -1; } @@ -813,8 +812,8 @@ static int virtio_balloon_exit_pci(PCIDevice *pci_dev) static Property virtio_blk_properties[] = { DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), - DEFINE_BLOCK_PROPERTIES(VirtIOPCIProxy, block), - DEFINE_PROP_STRING("serial", VirtIOPCIProxy, block_serial), + DEFINE_BLOCK_PROPERTIES(VirtIOPCIProxy, blk.conf), + DEFINE_PROP_STRING("serial", VirtIOPCIProxy, blk.serial), DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features), diff --git a/hw/virtio-pci.h b/hw/virtio-pci.h index e5604282e5..889e59e421 100644 --- a/hw/virtio-pci.h +++ b/hw/virtio-pci.h @@ -15,6 +15,7 @@ #ifndef QEMU_VIRTIO_PCI_H #define QEMU_VIRTIO_PCI_H +#include "virtio-blk.h" #include "virtio-net.h" #include "virtio-serial.h" #include "virtio-scsi.h" @@ -32,8 +33,7 @@ typedef struct { uint32_t flags; uint32_t class_code; uint32_t nvectors; - BlockConf block; - char *block_serial; + VirtIOBlkConf blk; NICConf nic; uint32_t host_features; #ifdef CONFIG_LINUX diff --git a/hw/virtio.h b/hw/virtio.h index 0aef7d1bc0..85aabe53d8 100644 --- a/hw/virtio.h +++ b/hw/virtio.h @@ -191,8 +191,8 @@ void virtio_bind_device(VirtIODevice *vdev, const VirtIOBindings *binding, void *opaque); /* Base devices. */ -VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf, - char **serial); +typedef struct VirtIOBlkConf VirtIOBlkConf; +VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk); struct virtio_net_conf; VirtIODevice *virtio_net_init(DeviceState *dev, NICConf *conf, struct virtio_net_conf *net); -- GitLab