--- /dev/null
+/*
+ * 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/error-report.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/block-backend.h"
+#include "sysemu/blockdev.h"
+#include "qapi/visitor.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;
+ SCSIDevice *scsi_dev;
+} MSDState;
+
+#define TYPE_USB_STORAGE "usb-storage-dev"
+#define USB_STORAGE_DEV(obj) OBJECT_CHECK(MSDState, (obj), TYPE_USB_STORAGE)
+
+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 = USB_STORAGE_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) {
+ error_report("usb-msd: Bad CBW size");
+ goto fail;
+ }
+ usb_packet_copy(p, &cbw, 31);
+ if (le32_to_cpu(cbw.sig) != 0x43425355) {
+ error_report("usb-msd: Bad signature %08x",
+ 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) {
+ error_report("usb-msd: Bad LUN %d", 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;
+ Error *local_err = NULL;
+
+ if (!err) {
+ usb_device_attach(&s->dev, &local_err);
+ }
+
+ if (local_err) {
+ error_report_err(local_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 void usb_msd_realize_storage(USBDevice *dev, Error **errp)
+{
+ MSDState *s = USB_STORAGE_DEV(dev);
+ BlockBackend *blk = s->conf.blk;
+ SCSIDevice *scsi_dev;
+ Error *err = NULL;
+
+ if (!blk) {
+ error_setg(errp, "drive property not set");
+ return;
+ }
+
+ bdrv_add_key(blk_bs(blk), NULL, &err);
+ if (err) {
+ if (monitor_cur_is_qmp()) {
+ error_propagate(errp, err);
+ return;
+ }
+ error_free(err);
+ err = NULL;
+ if (cur_mon) {
+ monitor_read_bdrv_key_start(cur_mon, blk_bs(blk),
+ usb_msd_password_cb, s);
+ s->dev.auto_attach = 0;
+ } else {
+ autostart = 0;
+ }
+ }
+
+ blkconf_serial(&s->conf, &dev->serial);
+ blkconf_blocksizes(&s->conf);
+
+ /*
+ * 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.
+ */
+ blk_detach_dev(blk, &s->dev.qdev);
+ s->conf.blk = 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, blk, 0, !!s->removable,
+ s->conf.bootindex, dev->serial,
+ &err);
+ if (!scsi_dev) {
+ error_propagate(errp, err);
+ return;
+ }
+ usb_msd_handle_reset(dev);
+ s->scsi_dev = scsi_dev;
+}
+
+static void usb_msd_realize_bot(USBDevice *dev, Error **errp)
+{
+ MSDState *s = USB_STORAGE_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);
+ usb_msd_handle_reset(dev);
+}
+
+static USBDevice *usb_msd_init(USBBus *bus, const char *filename)
+{
+ static int nr=0;
+ Error *err = NULL;
+ char id[8];
+ QemuOpts *opts;
+ DriveInfo *dinfo;
+ USBDevice *dev;
+ const char *p1;
+ char fmt[32];
+
+ /* parse -usbdevice disk: syntax into drive opts */
+ do {
+ snprintf(id, sizeof(id), "usb%d", nr++);
+ opts = qemu_opts_create(qemu_find_opts("drive"), id, 1, NULL);
+ } while (!opts);
+
+ 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, &error_abort);
+ } else if (*filename != ':') {
+ error_report("unrecognized USB mass-storage option %s", filename);
+ return NULL;
+ }
+ filename = p1;
+ }
+ if (!*filename) {
+ error_report("block device specification needed");
+ return NULL;
+ }
+ qemu_opt_set(opts, "file", filename, &error_abort);
+ qemu_opt_set(opts, "if", "none", &error_abort);
+
+ /* 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");
+ qdev_prop_set_drive(&dev->qdev, "drive", blk_by_legacy_dinfo(dinfo),
+ &err);
+ if (err) {
+ error_report_err(err);
+ object_unparent(OBJECT(dev));
+ 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, void *data)
+{
+ 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->realize = usb_msd_realize_storage;
+ dc->props = msd_properties;
+}
+
+static void usb_msd_get_bootindex(Object *obj, Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ USBDevice *dev = USB_DEVICE(obj);
+ MSDState *s = USB_STORAGE_DEV(dev);
+
+ visit_type_int32(v, &s->conf.bootindex, name, errp);
+}
+
+static void usb_msd_set_bootindex(Object *obj, Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ USBDevice *dev = USB_DEVICE(obj);
+ MSDState *s = USB_STORAGE_DEV(dev);
+ int32_t boot_index;
+ Error *local_err = NULL;
+
+ visit_type_int32(v, &boot_index, name, &local_err);
+ if (local_err) {
+ goto out;
+ }
+ /* check whether bootindex is present in fw_boot_order list */
+ check_boot_index(boot_index, &local_err);
+ if (local_err) {
+ goto out;
+ }
+ /* change bootindex to a new one */
+ s->conf.bootindex = boot_index;
+
+ if (s->scsi_dev) {
+ object_property_set_int(OBJECT(s->scsi_dev), boot_index, "bootindex",
+ &error_abort);
+ }
+
+out:
+ if (local_err) {
+ error_propagate(errp, local_err);
+ }
+}
+
+static const TypeInfo usb_storage_dev_type_info = {
+ .name = TYPE_USB_STORAGE,
+ .parent = TYPE_USB_DEVICE,
+ .instance_size = sizeof(MSDState),
+ .abstract = true,
+ .class_init = usb_msd_class_initfn_common,
+};
+
+static void usb_msd_instance_init(Object *obj)
+{
+ object_property_add(obj, "bootindex", "int32",
+ usb_msd_get_bootindex,
+ usb_msd_set_bootindex, NULL, NULL, NULL);
+ object_property_set_int(obj, -1, "bootindex", NULL);
+}
+
+static void usb_msd_class_initfn_bot(ObjectClass *klass, void *data)
+{
+ USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ uc->realize = usb_msd_realize_bot;
+ dc->hotpluggable = false;
+}
+
+static const TypeInfo msd_info = {
+ .name = "usb-storage",
+ .parent = TYPE_USB_STORAGE,
+ .class_init = usb_msd_class_initfn_storage,
+ .instance_init = usb_msd_instance_init,
+};
+
+static const TypeInfo bot_info = {
+ .name = "usb-bot",
+ .parent = TYPE_USB_STORAGE,
+ .class_init = usb_msd_class_initfn_bot,
+};
+
+static void usb_msd_register_types(void)
+{
+ type_register_static(&usb_storage_dev_type_info);
+ 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)
Code Review / kvmfornfv.git / blobdiff