mirror of https://gitee.com/openkylin/qemu.git
qdev/scsi+usb: convert usb-storage to qdev.
Full coverage with properties and everything. You can add virtual usb sticks this way now: -drive if=none,id=pendrive,path=/some/where -device usb-storage,drive=pendrive -usbdevice disk:/path/to/image continues to work. Other side effects: usb storage is listed in 'info block' now. kvm tree should be able to boot from usb via extboot (untested though). Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Gerd Hoffmann
Anthony Liguori
parent
d52affa7f6
commit
7fc2f2c086
67
hw/usb-msd.c
67
hw/usb-msd.c
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@ -8,6 +8,8 @@
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*/
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#include "qemu-common.h"
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#include "qemu-option.h"
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#include "qemu-config.h"
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#include "usb.h"
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#include "block.h"
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#include "scsi-disk.h"
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@ -43,8 +45,8 @@ typedef struct {
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uint32_t data_len;
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uint32_t residue;
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uint32_t tag;
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BlockDriverState *bs;
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SCSIBus *bus;
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DriveInfo *dinfo;
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SCSIDevice *scsi_dev;
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int result;
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/* For async completion. */
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@ -511,7 +513,7 @@ static void usb_msd_handle_destroy(USBDevice *dev)
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MSDState *s = (MSDState *)dev;
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s->scsi_dev->info->destroy(s->scsi_dev);
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bdrv_delete(s->bs);
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drive_uninit(s->dinfo->bdrv);
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qemu_free(s);
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}
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@ -519,19 +521,33 @@ static int usb_msd_initfn(USBDevice *dev)
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{
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MSDState *s = DO_UPCAST(MSDState, dev, dev);
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if (!s->dinfo || !s->dinfo->bdrv) {
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qemu_error("usb-msd: drive property not set\n");
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return -1;
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}
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s->dev.speed = USB_SPEED_FULL;
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s->bus = scsi_bus_new(&s->dev.qdev, 0, 1, usb_msd_command_complete);
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s->scsi_dev = scsi_bus_legacy_add_drive(s->bus, s->dinfo, 0);
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usb_msd_handle_reset(dev);
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return 0;
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}
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USBDevice *usb_msd_init(const char *filename)
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{
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static int nr=0;
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char id[8];
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QemuOpts *opts;
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DriveInfo *dinfo;
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USBDevice *dev;
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MSDState *s;
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BlockDriverState *bdrv;
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BlockDriver *drv = NULL;
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int fatal_error;
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const char *p1;
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char fmt[32];
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/* parse -usbdevice disk: syntax into drive opts */
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snprintf(id, sizeof(id), "usb%d", nr++);
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opts = qemu_opts_create(&qemu_drive_opts, id, 0);
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p1 = strchr(filename, ':');
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if (p1++) {
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const char *p2;
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@ -539,52 +555,45 @@ USBDevice *usb_msd_init(const char *filename)
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if (strstart(filename, "format=", &p2)) {
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int len = MIN(p1 - p2, sizeof(fmt));
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pstrcpy(fmt, len, p2);
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drv = bdrv_find_format(fmt);
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if (!drv) {
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printf("invalid format %s\n", fmt);
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return NULL;
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}
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qemu_opt_set(opts, "format", fmt);
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} else if (*filename != ':') {
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printf("unrecognized USB mass-storage option %s\n", filename);
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return NULL;
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}
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filename = p1;
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}
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if (!*filename) {
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printf("block device specification needed\n");
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return NULL;
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}
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qemu_opt_set(opts, "file", filename);
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qemu_opt_set(opts, "if", "none");
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bdrv = bdrv_new("usb");
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if (bdrv_open2(bdrv, filename, 0, drv) < 0)
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/* create host drive */
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dinfo = drive_init(opts, NULL, &fatal_error);
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if (!dinfo) {
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qemu_opts_del(opts);
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return NULL;
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}
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dev = usb_create_simple(NULL /* FIXME */, "QEMU USB MSD");
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s = DO_UPCAST(MSDState, dev, dev);
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s->bs = bdrv;
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snprintf(s->dev.devname, sizeof(s->dev.devname), "QEMU USB MSD(%.16s)",
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filename);
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/* create guest device */
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dev = usb_create(NULL /* FIXME */, "QEMU USB MSD");
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qdev_prop_set_drive(&dev->qdev, "drive", dinfo);
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qdev_init(&dev->qdev);
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s->bus = scsi_bus_new(&s->dev.qdev, 0, 1, usb_msd_command_complete);
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#if 0
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s->scsi_dev = scsi_disk_init(s->bus, bdrv);
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#endif
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usb_msd_handle_reset((USBDevice *)s);
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return (USBDevice *)s;
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return dev;
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}
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BlockDriverState *usb_msd_get_bdrv(USBDevice *dev)
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{
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MSDState *s = (MSDState *)dev;
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return s->bs;
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return s->dinfo->bdrv;
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}
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static struct USBDeviceInfo msd_info = {
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.qdev.name = "QEMU USB MSD",
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.qdev.alias = "usb-storage",
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.qdev.size = sizeof(MSDState),
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.init = usb_msd_initfn,
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.handle_packet = usb_generic_handle_packet,
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@ -592,6 +601,10 @@ static struct USBDeviceInfo msd_info = {
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.handle_control = usb_msd_handle_control,
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.handle_data = usb_msd_handle_data,
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.handle_destroy = usb_msd_handle_destroy,
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.qdev.props = (Property[]) {
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DEFINE_PROP_DRIVE("drive", MSDState, dinfo),
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DEFINE_PROP_END_OF_LIST(),
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},
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};
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static void usb_msd_register_devices(void)
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