USB_MSDM_CSW /* Command Status. */
};
+struct usb_msd_csw {
+ uint32_t sig;
+ uint32_t tag;
+ uint32_t residue;
+ uint8_t status;
+};
+
typedef struct {
USBDevice dev;
enum USBMSDMode mode;
uint8_t *scsi_buf;
uint32_t data_len;
uint32_t residue;
- uint32_t tag;
+ struct usb_msd_csw csw;
SCSIRequest *req;
SCSIBus bus;
BlockConf conf;
char *serial;
SCSIDevice *scsi_dev;
uint32_t removable;
- int result;
/* For async completion. */
USBPacket *packet;
} MSDState;
uint8_t cmd[16];
};
-struct usb_msd_csw {
- uint32_t sig;
- uint32_t tag;
- uint32_t residue;
- uint8_t status;
-};
-
enum {
STR_MANUFACTURER = 1,
STR_PRODUCT,
static const USBDesc desc = {
.id = {
- .idVendor = 0,
- .idProduct = 0,
+ .idVendor = 0x46f4, /* CRC16() of "QEMU" */
+ .idProduct = 0x0001,
.bcdDevice = 0,
.iManufacturer = STR_MANUFACTURER,
.iProduct = STR_PRODUCT,
static void usb_msd_send_status(MSDState *s, USBPacket *p)
{
- struct usb_msd_csw csw;
int len;
- csw.sig = cpu_to_le32(0x53425355);
- csw.tag = cpu_to_le32(s->tag);
- csw.residue = s->residue;
- csw.status = s->result;
+ DPRINTF("Command status %d tag 0x%x, len %zd\n",
+ s->csw.status, s->csw.tag, p->iov.size);
- len = MIN(sizeof(csw), p->iov.size);
- usb_packet_copy(p, &csw, len);
- p->result = len;
+ assert(s->csw.sig == 0x53425355);
+ len = MIN(sizeof(s->csw), p->iov.size);
+ usb_packet_copy(p, &s->csw, len);
+ memset(&s->csw, 0, sizeof(s->csw));
}
static void usb_msd_transfer_data(SCSIRequest *req, uint32_t len)
MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent);
USBPacket *p = s->packet;
- DPRINTF("Command complete %d\n", status);
+ DPRINTF("Command complete %d tag 0x%x\n", status, req->tag);
s->residue = s->data_len;
- s->result = status != 0;
+
+ s->csw.sig = cpu_to_le32(0x53425355);
+ s->csw.tag = cpu_to_le32(req->tag);
+ s->csw.residue = s->residue;
+ s->csw.status = status != 0;
+
if (s->packet) {
if (s->data_len == 0 && s->mode == USB_MSDM_DATAOUT) {
/* A deferred packet with no write data remaining must be
MSDState *s = (MSDState *)dev;
DPRINTF("Reset\n");
+ if (s->req) {
+ scsi_req_cancel(s->req);
+ }
+ assert(s->req == NULL);
+
+ if (s->packet) {
+ USBPacket *p = s->packet;
+ s->packet = NULL;
+ p->result = USB_RET_STALL;
+ usb_packet_complete(dev, p);
+ }
+
s->mode = USB_MSDM_CBW;
}
ret = 0;
switch (request) {
- case DeviceRequest | USB_REQ_GET_INTERFACE:
- data[0] = 0;
- ret = 1;
- break;
- case DeviceOutRequest | USB_REQ_SET_INTERFACE:
- ret = 0;
- break;
case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
ret = 0;
break;
- case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
- ret = 0;
- break;
/* Class specific requests. */
case ClassInterfaceOutRequest | MassStorageReset:
/* Reset state ready for the next CBW. */
static void usb_msd_cancel_io(USBDevice *dev, USBPacket *p)
{
MSDState *s = DO_UPCAST(MSDState, dev, dev);
- scsi_req_cancel(s->req);
+
+ if (s->req) {
+ scsi_req_cancel(s->req);
+ }
}
static int usb_msd_handle_data(USBDevice *dev, USBPacket *p)
{
MSDState *s = (MSDState *)dev;
+ uint32_t tag;
int ret = 0;
struct usb_msd_cbw cbw;
uint8_t devep = p->devep;
fprintf(stderr, "usb-msd: Bad LUN %d\n", cbw.lun);
goto fail;
}
- s->tag = le32_to_cpu(cbw.tag);
+ tag = le32_to_cpu(cbw.tag);
s->data_len = le32_to_cpu(cbw.data_len);
if (s->data_len == 0) {
s->mode = USB_MSDM_CSW;
s->mode = USB_MSDM_DATAOUT;
}
DPRINTF("Command tag 0x%x flags %08x len %d data %d\n",
- s->tag, cbw.flags, cbw.cmd_len, s->data_len);
+ tag, cbw.flags, cbw.cmd_len, s->data_len);
s->residue = 0;
s->scsi_len = 0;
- s->req = scsi_req_new(s->scsi_dev, s->tag, 0, NULL);
- scsi_req_enqueue(s->req, cbw.cmd);
- /* ??? Should check that USB and SCSI data transfer
- directions match. */
- if (s->mode != USB_MSDM_CSW && s->residue == 0) {
+ s->req = scsi_req_new(s->scsi_dev, tag, 0, cbw.cmd, NULL);
+ scsi_req_enqueue(s->req);
+ if (s->req && s->req->cmd.xfer != SCSI_XFER_NONE) {
scsi_req_continue(s->req);
}
ret = p->result;
break;
case USB_MSDM_CSW:
- DPRINTF("Command status %d tag 0x%x, len %zd\n",
- s->result, s->tag, p->iov.size);
if (p->iov.size < 13) {
goto fail;
}
- usb_msd_send_status(s, p);
- s->mode = USB_MSDM_CBW;
- ret = 13;
+ if (s->req) {
+ /* still in flight */
+ s->packet = p;
+ ret = USB_RET_ASYNC;
+ } else {
+ usb_msd_send_status(s, p);
+ s->mode = USB_MSDM_CBW;
+ ret = 13;
+ }
break;
case USB_MSDM_DATAIN:
qdev_unplug(&s->dev.qdev);
}
-static const struct SCSIBusOps usb_msd_scsi_ops = {
+static const struct SCSIBusInfo usb_msd_scsi_info = {
+ .tcq = false,
+ .max_target = 0,
+ .max_lun = 0,
+
.transfer_data = usb_msd_transfer_data,
.complete = usb_msd_command_complete,
.cancel = usb_msd_request_cancelled
DriveInfo *dinfo;
if (!bs) {
- error_report("usb-msd: drive property not set");
+ error_report("drive property not set");
return -1;
}
*
* The hack is probably a bad idea.
*/
- bdrv_detach(bs, &s->dev.qdev);
+ bdrv_detach_dev(bs, &s->dev.qdev);
s->conf.bs = NULL;
if (!s->serial) {
}
usb_desc_init(dev);
- scsi_bus_new(&s->bus, &s->dev.qdev, 0, 1, &usb_msd_scsi_ops);
- s->scsi_dev = scsi_bus_legacy_add_drive(&s->bus, bs, 0, !!s->removable);
+ scsi_bus_new(&s->bus, &s->dev.qdev, &usb_msd_scsi_info);
+ s->scsi_dev = scsi_bus_legacy_add_drive(&s->bus, bs, 0, !!s->removable,
+ s->conf.bootindex);
if (!s->scsi_dev) {
return -1;
}
}
}
- add_boot_device_path(s->conf.bootindex, &dev->qdev, "/disk@0,0");
return 0;
}
}
};
-static struct USBDeviceInfo msd_info = {
- .product_desc = "QEMU USB MSD",
- .qdev.name = "usb-storage",
- .qdev.fw_name = "storage",
- .qdev.size = sizeof(MSDState),
- .qdev.vmsd = &vmstate_usb_msd,
- .usb_desc = &desc,
- .init = usb_msd_initfn,
- .handle_packet = usb_generic_handle_packet,
- .cancel_packet = usb_msd_cancel_io,
- .handle_attach = usb_desc_attach,
- .handle_reset = usb_msd_handle_reset,
- .handle_control = usb_msd_handle_control,
- .handle_data = usb_msd_handle_data,
- .usbdevice_name = "disk",
- .usbdevice_init = usb_msd_init,
- .qdev.props = (Property[]) {
- DEFINE_BLOCK_PROPERTIES(MSDState, conf),
- DEFINE_PROP_STRING("serial", MSDState, serial),
- DEFINE_PROP_BIT("removable", MSDState, removable, 0, false),
- DEFINE_PROP_END_OF_LIST(),
- },
+static Property msd_properties[] = {
+ DEFINE_BLOCK_PROPERTIES(MSDState, conf),
+ DEFINE_PROP_STRING("serial", MSDState, serial),
+ DEFINE_PROP_BIT("removable", MSDState, removable, 0, false),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void usb_msd_class_initfn(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
+
+ uc->init = usb_msd_initfn;
+ uc->product_desc = "QEMU USB MSD";
+ uc->usb_desc = &desc;
+ uc->handle_packet = usb_generic_handle_packet;
+ uc->cancel_packet = usb_msd_cancel_io;
+ uc->handle_attach = usb_desc_attach;
+ uc->handle_reset = usb_msd_handle_reset;
+ uc->handle_control = usb_msd_handle_control;
+ uc->handle_data = usb_msd_handle_data;
+ dc->fw_name = "storage";
+ dc->vmsd = &vmstate_usb_msd;
+ dc->props = msd_properties;
+}
+
+static TypeInfo msd_info = {
+ .name = "usb-storage",
+ .parent = TYPE_USB_DEVICE,
+ .instance_size = sizeof(MSDState),
+ .class_init = usb_msd_class_initfn,
};
static void usb_msd_register_devices(void)
{
- usb_qdev_register(&msd_info);
+ type_register_static(&msd_info);
+ usb_legacy_register("usb-storage", "disk", usb_msd_init);
}
device_init(usb_msd_register_devices)
projects / qemu.git / blobdiff