mirror of https://gitee.com/openkylin/qemu.git
796 lines
22 KiB
C
796 lines
22 KiB
C
/*
|
|
* USB Mass Storage Device emulation
|
|
*
|
|
* Copyright (c) 2006 CodeSourcery.
|
|
* Written by Paul Brook
|
|
*
|
|
* This code is licensed under the LGPL.
|
|
*/
|
|
|
|
#include "qemu-common.h"
|
|
#include "qemu/option.h"
|
|
#include "qemu/config-file.h"
|
|
#include "hw/usb.h"
|
|
#include "hw/usb/desc.h"
|
|
#include "hw/scsi/scsi.h"
|
|
#include "ui/console.h"
|
|
#include "monitor/monitor.h"
|
|
#include "sysemu/sysemu.h"
|
|
#include "sysemu/blockdev.h"
|
|
|
|
//#define DEBUG_MSD
|
|
|
|
#ifdef DEBUG_MSD
|
|
#define DPRINTF(fmt, ...) \
|
|
do { printf("usb-msd: " fmt , ## __VA_ARGS__); } while (0)
|
|
#else
|
|
#define DPRINTF(fmt, ...) do {} while(0)
|
|
#endif
|
|
|
|
/* USB requests. */
|
|
#define MassStorageReset 0xff
|
|
#define GetMaxLun 0xfe
|
|
|
|
enum USBMSDMode {
|
|
USB_MSDM_CBW, /* Command Block. */
|
|
USB_MSDM_DATAOUT, /* Transfer data to device. */
|
|
USB_MSDM_DATAIN, /* Transfer data from device. */
|
|
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;
|
|
uint32_t scsi_off;
|
|
uint32_t scsi_len;
|
|
uint32_t data_len;
|
|
struct usb_msd_csw csw;
|
|
SCSIRequest *req;
|
|
SCSIBus bus;
|
|
/* For async completion. */
|
|
USBPacket *packet;
|
|
/* usb-storage only */
|
|
BlockConf conf;
|
|
uint32_t removable;
|
|
} MSDState;
|
|
|
|
struct usb_msd_cbw {
|
|
uint32_t sig;
|
|
uint32_t tag;
|
|
uint32_t data_len;
|
|
uint8_t flags;
|
|
uint8_t lun;
|
|
uint8_t cmd_len;
|
|
uint8_t cmd[16];
|
|
};
|
|
|
|
enum {
|
|
STR_MANUFACTURER = 1,
|
|
STR_PRODUCT,
|
|
STR_SERIALNUMBER,
|
|
STR_CONFIG_FULL,
|
|
STR_CONFIG_HIGH,
|
|
STR_CONFIG_SUPER,
|
|
};
|
|
|
|
static const USBDescStrings desc_strings = {
|
|
[STR_MANUFACTURER] = "QEMU",
|
|
[STR_PRODUCT] = "QEMU USB HARDDRIVE",
|
|
[STR_SERIALNUMBER] = "1",
|
|
[STR_CONFIG_FULL] = "Full speed config (usb 1.1)",
|
|
[STR_CONFIG_HIGH] = "High speed config (usb 2.0)",
|
|
[STR_CONFIG_SUPER] = "Super speed config (usb 3.0)",
|
|
};
|
|
|
|
static const USBDescIface desc_iface_full = {
|
|
.bInterfaceNumber = 0,
|
|
.bNumEndpoints = 2,
|
|
.bInterfaceClass = USB_CLASS_MASS_STORAGE,
|
|
.bInterfaceSubClass = 0x06, /* SCSI */
|
|
.bInterfaceProtocol = 0x50, /* Bulk */
|
|
.eps = (USBDescEndpoint[]) {
|
|
{
|
|
.bEndpointAddress = USB_DIR_IN | 0x01,
|
|
.bmAttributes = USB_ENDPOINT_XFER_BULK,
|
|
.wMaxPacketSize = 64,
|
|
},{
|
|
.bEndpointAddress = USB_DIR_OUT | 0x02,
|
|
.bmAttributes = USB_ENDPOINT_XFER_BULK,
|
|
.wMaxPacketSize = 64,
|
|
},
|
|
}
|
|
};
|
|
|
|
static const USBDescDevice desc_device_full = {
|
|
.bcdUSB = 0x0200,
|
|
.bMaxPacketSize0 = 8,
|
|
.bNumConfigurations = 1,
|
|
.confs = (USBDescConfig[]) {
|
|
{
|
|
.bNumInterfaces = 1,
|
|
.bConfigurationValue = 1,
|
|
.iConfiguration = STR_CONFIG_FULL,
|
|
.bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER,
|
|
.nif = 1,
|
|
.ifs = &desc_iface_full,
|
|
},
|
|
},
|
|
};
|
|
|
|
static const USBDescIface desc_iface_high = {
|
|
.bInterfaceNumber = 0,
|
|
.bNumEndpoints = 2,
|
|
.bInterfaceClass = USB_CLASS_MASS_STORAGE,
|
|
.bInterfaceSubClass = 0x06, /* SCSI */
|
|
.bInterfaceProtocol = 0x50, /* Bulk */
|
|
.eps = (USBDescEndpoint[]) {
|
|
{
|
|
.bEndpointAddress = USB_DIR_IN | 0x01,
|
|
.bmAttributes = USB_ENDPOINT_XFER_BULK,
|
|
.wMaxPacketSize = 512,
|
|
},{
|
|
.bEndpointAddress = USB_DIR_OUT | 0x02,
|
|
.bmAttributes = USB_ENDPOINT_XFER_BULK,
|
|
.wMaxPacketSize = 512,
|
|
},
|
|
}
|
|
};
|
|
|
|
static const USBDescDevice desc_device_high = {
|
|
.bcdUSB = 0x0200,
|
|
.bMaxPacketSize0 = 64,
|
|
.bNumConfigurations = 1,
|
|
.confs = (USBDescConfig[]) {
|
|
{
|
|
.bNumInterfaces = 1,
|
|
.bConfigurationValue = 1,
|
|
.iConfiguration = STR_CONFIG_HIGH,
|
|
.bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER,
|
|
.nif = 1,
|
|
.ifs = &desc_iface_high,
|
|
},
|
|
},
|
|
};
|
|
|
|
static const USBDescIface desc_iface_super = {
|
|
.bInterfaceNumber = 0,
|
|
.bNumEndpoints = 2,
|
|
.bInterfaceClass = USB_CLASS_MASS_STORAGE,
|
|
.bInterfaceSubClass = 0x06, /* SCSI */
|
|
.bInterfaceProtocol = 0x50, /* Bulk */
|
|
.eps = (USBDescEndpoint[]) {
|
|
{
|
|
.bEndpointAddress = USB_DIR_IN | 0x01,
|
|
.bmAttributes = USB_ENDPOINT_XFER_BULK,
|
|
.wMaxPacketSize = 1024,
|
|
.bMaxBurst = 15,
|
|
},{
|
|
.bEndpointAddress = USB_DIR_OUT | 0x02,
|
|
.bmAttributes = USB_ENDPOINT_XFER_BULK,
|
|
.wMaxPacketSize = 1024,
|
|
.bMaxBurst = 15,
|
|
},
|
|
}
|
|
};
|
|
|
|
static const USBDescDevice desc_device_super = {
|
|
.bcdUSB = 0x0300,
|
|
.bMaxPacketSize0 = 9,
|
|
.bNumConfigurations = 1,
|
|
.confs = (USBDescConfig[]) {
|
|
{
|
|
.bNumInterfaces = 1,
|
|
.bConfigurationValue = 1,
|
|
.iConfiguration = STR_CONFIG_SUPER,
|
|
.bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER,
|
|
.nif = 1,
|
|
.ifs = &desc_iface_super,
|
|
},
|
|
},
|
|
};
|
|
|
|
static const USBDesc desc = {
|
|
.id = {
|
|
.idVendor = 0x46f4, /* CRC16() of "QEMU" */
|
|
.idProduct = 0x0001,
|
|
.bcdDevice = 0,
|
|
.iManufacturer = STR_MANUFACTURER,
|
|
.iProduct = STR_PRODUCT,
|
|
.iSerialNumber = STR_SERIALNUMBER,
|
|
},
|
|
.full = &desc_device_full,
|
|
.high = &desc_device_high,
|
|
.super = &desc_device_super,
|
|
.str = desc_strings,
|
|
};
|
|
|
|
static void usb_msd_copy_data(MSDState *s, USBPacket *p)
|
|
{
|
|
uint32_t len;
|
|
len = p->iov.size - p->actual_length;
|
|
if (len > s->scsi_len)
|
|
len = s->scsi_len;
|
|
usb_packet_copy(p, scsi_req_get_buf(s->req) + s->scsi_off, len);
|
|
s->scsi_len -= len;
|
|
s->scsi_off += len;
|
|
s->data_len -= len;
|
|
if (s->scsi_len == 0 || s->data_len == 0) {
|
|
scsi_req_continue(s->req);
|
|
}
|
|
}
|
|
|
|
static void usb_msd_send_status(MSDState *s, USBPacket *p)
|
|
{
|
|
int len;
|
|
|
|
DPRINTF("Command status %d tag 0x%x, len %zd\n",
|
|
s->csw.status, le32_to_cpu(s->csw.tag), p->iov.size);
|
|
|
|
assert(s->csw.sig == cpu_to_le32(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_packet_complete(MSDState *s)
|
|
{
|
|
USBPacket *p = s->packet;
|
|
|
|
/* Set s->packet to NULL before calling usb_packet_complete
|
|
because another request may be issued before
|
|
usb_packet_complete returns. */
|
|
DPRINTF("Packet complete %p\n", p);
|
|
s->packet = NULL;
|
|
usb_packet_complete(&s->dev, p);
|
|
}
|
|
|
|
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;
|
|
|
|
assert((s->mode == USB_MSDM_DATAOUT) == (req->cmd.mode == SCSI_XFER_TO_DEV));
|
|
s->scsi_len = len;
|
|
s->scsi_off = 0;
|
|
if (p) {
|
|
usb_msd_copy_data(s, p);
|
|
p = s->packet;
|
|
if (p && p->actual_length == p->iov.size) {
|
|
p->status = USB_RET_SUCCESS; /* Clear previous ASYNC status */
|
|
usb_msd_packet_complete(s);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void usb_msd_command_complete(SCSIRequest *req, uint32_t status, size_t resid)
|
|
{
|
|
MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent);
|
|
USBPacket *p = s->packet;
|
|
|
|
DPRINTF("Command complete %d tag 0x%x\n", status, req->tag);
|
|
|
|
s->csw.sig = cpu_to_le32(0x53425355);
|
|
s->csw.tag = cpu_to_le32(req->tag);
|
|
s->csw.residue = cpu_to_le32(s->data_len);
|
|
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
|
|
the status read packet. */
|
|
usb_msd_send_status(s, p);
|
|
s->mode = USB_MSDM_CBW;
|
|
} else if (s->mode == USB_MSDM_CSW) {
|
|
usb_msd_send_status(s, p);
|
|
s->mode = USB_MSDM_CBW;
|
|
} else {
|
|
if (s->data_len) {
|
|
int len = (p->iov.size - p->actual_length);
|
|
usb_packet_skip(p, len);
|
|
s->data_len -= len;
|
|
}
|
|
if (s->data_len == 0) {
|
|
s->mode = USB_MSDM_CSW;
|
|
}
|
|
}
|
|
p->status = USB_RET_SUCCESS; /* Clear previous ASYNC status */
|
|
usb_msd_packet_complete(s);
|
|
} else if (s->data_len == 0) {
|
|
s->mode = USB_MSDM_CSW;
|
|
}
|
|
scsi_req_unref(req);
|
|
s->req = NULL;
|
|
}
|
|
|
|
static void usb_msd_request_cancelled(SCSIRequest *req)
|
|
{
|
|
MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent);
|
|
|
|
if (req == s->req) {
|
|
scsi_req_unref(s->req);
|
|
s->req = NULL;
|
|
s->scsi_len = 0;
|
|
}
|
|
}
|
|
|
|
static void usb_msd_handle_reset(USBDevice *dev)
|
|
{
|
|
MSDState *s = (MSDState *)dev;
|
|
|
|
DPRINTF("Reset\n");
|
|
if (s->req) {
|
|
scsi_req_cancel(s->req);
|
|
}
|
|
assert(s->req == NULL);
|
|
|
|
if (s->packet) {
|
|
s->packet->status = USB_RET_STALL;
|
|
usb_msd_packet_complete(s);
|
|
}
|
|
|
|
s->mode = USB_MSDM_CBW;
|
|
}
|
|
|
|
static void usb_msd_handle_control(USBDevice *dev, USBPacket *p,
|
|
int request, int value, int index, int length, uint8_t *data)
|
|
{
|
|
MSDState *s = (MSDState *)dev;
|
|
SCSIDevice *scsi_dev;
|
|
int ret, maxlun;
|
|
|
|
ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
|
|
if (ret >= 0) {
|
|
return;
|
|
}
|
|
|
|
switch (request) {
|
|
case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
|
|
break;
|
|
/* Class specific requests. */
|
|
case ClassInterfaceOutRequest | MassStorageReset:
|
|
/* Reset state ready for the next CBW. */
|
|
s->mode = USB_MSDM_CBW;
|
|
break;
|
|
case ClassInterfaceRequest | GetMaxLun:
|
|
maxlun = 0;
|
|
for (;;) {
|
|
scsi_dev = scsi_device_find(&s->bus, 0, 0, maxlun+1);
|
|
if (scsi_dev == NULL) {
|
|
break;
|
|
}
|
|
if (scsi_dev->lun != maxlun+1) {
|
|
break;
|
|
}
|
|
maxlun++;
|
|
}
|
|
DPRINTF("MaxLun %d\n", maxlun);
|
|
data[0] = maxlun;
|
|
p->actual_length = 1;
|
|
break;
|
|
default:
|
|
p->status = USB_RET_STALL;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void usb_msd_cancel_io(USBDevice *dev, USBPacket *p)
|
|
{
|
|
MSDState *s = DO_UPCAST(MSDState, dev, dev);
|
|
|
|
assert(s->packet == p);
|
|
s->packet = NULL;
|
|
|
|
if (s->req) {
|
|
scsi_req_cancel(s->req);
|
|
}
|
|
}
|
|
|
|
static void usb_msd_handle_data(USBDevice *dev, USBPacket *p)
|
|
{
|
|
MSDState *s = (MSDState *)dev;
|
|
uint32_t tag;
|
|
struct usb_msd_cbw cbw;
|
|
uint8_t devep = p->ep->nr;
|
|
SCSIDevice *scsi_dev;
|
|
uint32_t len;
|
|
|
|
switch (p->pid) {
|
|
case USB_TOKEN_OUT:
|
|
if (devep != 2)
|
|
goto fail;
|
|
|
|
switch (s->mode) {
|
|
case USB_MSDM_CBW:
|
|
if (p->iov.size != 31) {
|
|
fprintf(stderr, "usb-msd: Bad CBW size");
|
|
goto fail;
|
|
}
|
|
usb_packet_copy(p, &cbw, 31);
|
|
if (le32_to_cpu(cbw.sig) != 0x43425355) {
|
|
fprintf(stderr, "usb-msd: Bad signature %08x\n",
|
|
le32_to_cpu(cbw.sig));
|
|
goto fail;
|
|
}
|
|
DPRINTF("Command on LUN %d\n", cbw.lun);
|
|
scsi_dev = scsi_device_find(&s->bus, 0, 0, cbw.lun);
|
|
if (scsi_dev == NULL) {
|
|
fprintf(stderr, "usb-msd: Bad LUN %d\n", cbw.lun);
|
|
goto fail;
|
|
}
|
|
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;
|
|
} else if (cbw.flags & 0x80) {
|
|
s->mode = USB_MSDM_DATAIN;
|
|
} else {
|
|
s->mode = USB_MSDM_DATAOUT;
|
|
}
|
|
DPRINTF("Command tag 0x%x flags %08x len %d data %d\n",
|
|
tag, cbw.flags, cbw.cmd_len, s->data_len);
|
|
assert(le32_to_cpu(s->csw.residue) == 0);
|
|
s->scsi_len = 0;
|
|
s->req = scsi_req_new(scsi_dev, tag, cbw.lun, cbw.cmd, NULL);
|
|
#ifdef DEBUG_MSD
|
|
scsi_req_print(s->req);
|
|
#endif
|
|
len = scsi_req_enqueue(s->req);
|
|
if (len) {
|
|
scsi_req_continue(s->req);
|
|
}
|
|
break;
|
|
|
|
case USB_MSDM_DATAOUT:
|
|
DPRINTF("Data out %zd/%d\n", p->iov.size, s->data_len);
|
|
if (p->iov.size > s->data_len) {
|
|
goto fail;
|
|
}
|
|
|
|
if (s->scsi_len) {
|
|
usb_msd_copy_data(s, p);
|
|
}
|
|
if (le32_to_cpu(s->csw.residue)) {
|
|
int len = p->iov.size - p->actual_length;
|
|
if (len) {
|
|
usb_packet_skip(p, len);
|
|
s->data_len -= len;
|
|
if (s->data_len == 0) {
|
|
s->mode = USB_MSDM_CSW;
|
|
}
|
|
}
|
|
}
|
|
if (p->actual_length < p->iov.size) {
|
|
DPRINTF("Deferring packet %p [wait data-out]\n", p);
|
|
s->packet = p;
|
|
p->status = USB_RET_ASYNC;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
DPRINTF("Unexpected write (len %zd)\n", p->iov.size);
|
|
goto fail;
|
|
}
|
|
break;
|
|
|
|
case USB_TOKEN_IN:
|
|
if (devep != 1)
|
|
goto fail;
|
|
|
|
switch (s->mode) {
|
|
case USB_MSDM_DATAOUT:
|
|
if (s->data_len != 0 || p->iov.size < 13) {
|
|
goto fail;
|
|
}
|
|
/* Waiting for SCSI write to complete. */
|
|
s->packet = p;
|
|
p->status = USB_RET_ASYNC;
|
|
break;
|
|
|
|
case USB_MSDM_CSW:
|
|
if (p->iov.size < 13) {
|
|
goto fail;
|
|
}
|
|
|
|
if (s->req) {
|
|
/* still in flight */
|
|
DPRINTF("Deferring packet %p [wait status]\n", p);
|
|
s->packet = p;
|
|
p->status = USB_RET_ASYNC;
|
|
} else {
|
|
usb_msd_send_status(s, p);
|
|
s->mode = USB_MSDM_CBW;
|
|
}
|
|
break;
|
|
|
|
case USB_MSDM_DATAIN:
|
|
DPRINTF("Data in %zd/%d, scsi_len %d\n",
|
|
p->iov.size, s->data_len, s->scsi_len);
|
|
if (s->scsi_len) {
|
|
usb_msd_copy_data(s, p);
|
|
}
|
|
if (le32_to_cpu(s->csw.residue)) {
|
|
int len = p->iov.size - p->actual_length;
|
|
if (len) {
|
|
usb_packet_skip(p, len);
|
|
s->data_len -= len;
|
|
if (s->data_len == 0) {
|
|
s->mode = USB_MSDM_CSW;
|
|
}
|
|
}
|
|
}
|
|
if (p->actual_length < p->iov.size) {
|
|
DPRINTF("Deferring packet %p [wait data-in]\n", p);
|
|
s->packet = p;
|
|
p->status = USB_RET_ASYNC;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
DPRINTF("Unexpected read (len %zd)\n", p->iov.size);
|
|
goto fail;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
DPRINTF("Bad token\n");
|
|
fail:
|
|
p->status = USB_RET_STALL;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void usb_msd_password_cb(void *opaque, int err)
|
|
{
|
|
MSDState *s = opaque;
|
|
|
|
if (!err)
|
|
err = usb_device_attach(&s->dev);
|
|
|
|
if (err)
|
|
qdev_unplug(&s->dev.qdev, NULL);
|
|
}
|
|
|
|
static void *usb_msd_load_request(QEMUFile *f, SCSIRequest *req)
|
|
{
|
|
MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent);
|
|
|
|
/* nothing to load, just store req in our state struct */
|
|
assert(s->req == NULL);
|
|
scsi_req_ref(req);
|
|
s->req = req;
|
|
return NULL;
|
|
}
|
|
|
|
static const struct SCSIBusInfo usb_msd_scsi_info_storage = {
|
|
.tcq = false,
|
|
.max_target = 0,
|
|
.max_lun = 0,
|
|
|
|
.transfer_data = usb_msd_transfer_data,
|
|
.complete = usb_msd_command_complete,
|
|
.cancel = usb_msd_request_cancelled,
|
|
.load_request = usb_msd_load_request,
|
|
};
|
|
|
|
static const struct SCSIBusInfo usb_msd_scsi_info_bot = {
|
|
.tcq = false,
|
|
.max_target = 0,
|
|
.max_lun = 15,
|
|
|
|
.transfer_data = usb_msd_transfer_data,
|
|
.complete = usb_msd_command_complete,
|
|
.cancel = usb_msd_request_cancelled,
|
|
.load_request = usb_msd_load_request,
|
|
};
|
|
|
|
static int usb_msd_initfn_storage(USBDevice *dev)
|
|
{
|
|
MSDState *s = DO_UPCAST(MSDState, dev, dev);
|
|
BlockDriverState *bs = s->conf.bs;
|
|
SCSIDevice *scsi_dev;
|
|
Error *err = NULL;
|
|
|
|
if (!bs) {
|
|
error_report("drive property not set");
|
|
return -1;
|
|
}
|
|
|
|
blkconf_serial(&s->conf, &dev->serial);
|
|
|
|
/*
|
|
* Hack alert: this pretends to be a block device, but it's really
|
|
* a SCSI bus that can serve only a single device, which it
|
|
* creates automatically. But first it needs to detach from its
|
|
* blockdev, or else scsi_bus_legacy_add_drive() dies when it
|
|
* attaches again.
|
|
*
|
|
* The hack is probably a bad idea.
|
|
*/
|
|
bdrv_detach_dev(bs, &s->dev.qdev);
|
|
s->conf.bs = NULL;
|
|
|
|
usb_desc_create_serial(dev);
|
|
usb_desc_init(dev);
|
|
scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(dev),
|
|
&usb_msd_scsi_info_storage, NULL);
|
|
scsi_dev = scsi_bus_legacy_add_drive(&s->bus, bs, 0, !!s->removable,
|
|
s->conf.bootindex, dev->serial,
|
|
&err);
|
|
if (!scsi_dev) {
|
|
return -1;
|
|
}
|
|
s->bus.qbus.allow_hotplug = 0;
|
|
usb_msd_handle_reset(dev);
|
|
|
|
if (bdrv_key_required(bs)) {
|
|
if (cur_mon) {
|
|
monitor_read_bdrv_key_start(cur_mon, bs, usb_msd_password_cb, s);
|
|
s->dev.auto_attach = 0;
|
|
} else {
|
|
autostart = 0;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int usb_msd_initfn_bot(USBDevice *dev)
|
|
{
|
|
MSDState *s = DO_UPCAST(MSDState, dev, dev);
|
|
|
|
usb_desc_create_serial(dev);
|
|
usb_desc_init(dev);
|
|
scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(dev),
|
|
&usb_msd_scsi_info_bot, NULL);
|
|
s->bus.qbus.allow_hotplug = 0;
|
|
usb_msd_handle_reset(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static USBDevice *usb_msd_init(USBBus *bus, const char *filename)
|
|
{
|
|
static int nr=0;
|
|
char id[8];
|
|
QemuOpts *opts;
|
|
DriveInfo *dinfo;
|
|
USBDevice *dev;
|
|
const char *p1;
|
|
char fmt[32];
|
|
|
|
/* parse -usbdevice disk: syntax into drive opts */
|
|
snprintf(id, sizeof(id), "usb%d", nr++);
|
|
opts = qemu_opts_create(qemu_find_opts("drive"), id, 0, NULL);
|
|
|
|
p1 = strchr(filename, ':');
|
|
if (p1++) {
|
|
const char *p2;
|
|
|
|
if (strstart(filename, "format=", &p2)) {
|
|
int len = MIN(p1 - p2, sizeof(fmt));
|
|
pstrcpy(fmt, len, p2);
|
|
qemu_opt_set(opts, "format", fmt);
|
|
} else if (*filename != ':') {
|
|
printf("unrecognized USB mass-storage option %s\n", filename);
|
|
return NULL;
|
|
}
|
|
filename = p1;
|
|
}
|
|
if (!*filename) {
|
|
printf("block device specification needed\n");
|
|
return NULL;
|
|
}
|
|
qemu_opt_set(opts, "file", filename);
|
|
qemu_opt_set(opts, "if", "none");
|
|
|
|
/* create host drive */
|
|
dinfo = drive_new(opts, 0);
|
|
if (!dinfo) {
|
|
qemu_opts_del(opts);
|
|
return NULL;
|
|
}
|
|
|
|
/* create guest device */
|
|
dev = usb_create(bus, "usb-storage");
|
|
if (!dev) {
|
|
return NULL;
|
|
}
|
|
if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) {
|
|
object_unparent(OBJECT(dev));
|
|
return NULL;
|
|
}
|
|
if (qdev_init(&dev->qdev) < 0)
|
|
return NULL;
|
|
|
|
return dev;
|
|
}
|
|
|
|
static const VMStateDescription vmstate_usb_msd = {
|
|
.name = "usb-storage",
|
|
.version_id = 1,
|
|
.minimum_version_id = 1,
|
|
.fields = (VMStateField[]) {
|
|
VMSTATE_USB_DEVICE(dev, MSDState),
|
|
VMSTATE_UINT32(mode, MSDState),
|
|
VMSTATE_UINT32(scsi_len, MSDState),
|
|
VMSTATE_UINT32(scsi_off, MSDState),
|
|
VMSTATE_UINT32(data_len, MSDState),
|
|
VMSTATE_UINT32(csw.sig, MSDState),
|
|
VMSTATE_UINT32(csw.tag, MSDState),
|
|
VMSTATE_UINT32(csw.residue, MSDState),
|
|
VMSTATE_UINT8(csw.status, MSDState),
|
|
VMSTATE_END_OF_LIST()
|
|
}
|
|
};
|
|
|
|
static Property msd_properties[] = {
|
|
DEFINE_BLOCK_PROPERTIES(MSDState, conf),
|
|
DEFINE_PROP_BIT("removable", MSDState, removable, 0, false),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void usb_msd_class_initfn_common(ObjectClass *klass)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
|
|
|
|
uc->product_desc = "QEMU USB MSD";
|
|
uc->usb_desc = &desc;
|
|
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;
|
|
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
|
|
dc->fw_name = "storage";
|
|
dc->vmsd = &vmstate_usb_msd;
|
|
}
|
|
|
|
static void usb_msd_class_initfn_storage(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
|
|
|
|
uc->init = usb_msd_initfn_storage;
|
|
dc->props = msd_properties;
|
|
usb_msd_class_initfn_common(klass);
|
|
}
|
|
|
|
static void usb_msd_class_initfn_bot(ObjectClass *klass, void *data)
|
|
{
|
|
USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
|
|
|
|
uc->init = usb_msd_initfn_bot;
|
|
usb_msd_class_initfn_common(klass);
|
|
}
|
|
|
|
static const TypeInfo msd_info = {
|
|
.name = "usb-storage",
|
|
.parent = TYPE_USB_DEVICE,
|
|
.instance_size = sizeof(MSDState),
|
|
.class_init = usb_msd_class_initfn_storage,
|
|
};
|
|
|
|
static const TypeInfo bot_info = {
|
|
.name = "usb-bot",
|
|
.parent = TYPE_USB_DEVICE,
|
|
.instance_size = sizeof(MSDState),
|
|
.class_init = usb_msd_class_initfn_bot,
|
|
};
|
|
|
|
static void usb_msd_register_types(void)
|
|
{
|
|
type_register_static(&msd_info);
|
|
type_register_static(&bot_info);
|
|
usb_legacy_register("usb-storage", "disk", usb_msd_init);
|
|
}
|
|
|
|
type_init(usb_msd_register_types)
|