| /* |
| * USB Mass Storage Device emulation |
| * |
| * Copyright (c) 2006 CodeSourcery. |
| * Written by Paul Brook |
| * |
| * This code is licensed under the LGPL. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qapi/error.h" |
| #include "qemu/error-report.h" |
| #include "qemu/module.h" |
| #include "qemu/option.h" |
| #include "qemu/config-file.h" |
| #include "hw/usb.h" |
| #include "desc.h" |
| #include "hw/qdev-properties.h" |
| #include "hw/scsi/scsi.h" |
| #include "migration/vmstate.h" |
| #include "sysemu/sysemu.h" |
| #include "sysemu/block-backend.h" |
| #include "qapi/visitor.h" |
| #include "qemu/cutils.h" |
| #include "qom/object.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; |
| }; |
| |
| struct MSDState { |
| 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; |
| }; |
| typedef struct MSDState MSDState; |
| |
| #define TYPE_USB_STORAGE "usb-storage-dev" |
| DECLARE_INSTANCE_CHECKER(MSDState, USB_STORAGE_DEV, |
| 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; |
| if (len > s->data_len) { |
| len = s->data_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); |
| if (len > s->data_len) { |
| len = s->data_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); |
| if (len > s->data_len) { |
| len = s->data_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); |
| if (len > s->data_len) { |
| len = s->data_len; |
| } |
| s->data_len -= len; |
| if (s->data_len == 0) { |
| s->mode = USB_MSDM_CSW; |
| } |
| } |
| } |
| if (p->actual_length < p->iov.size && s->mode == USB_MSDM_DATAIN) { |
| 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_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_storage_realize(USBDevice *dev, Error **errp) |
| { |
| MSDState *s = USB_STORAGE_DEV(dev); |
| BlockBackend *blk = s->conf.blk; |
| SCSIDevice *scsi_dev; |
| |
| if (!blk) { |
| error_setg(errp, "drive property not set"); |
| return; |
| } |
| |
| if (!blkconf_blocksizes(&s->conf, errp)) { |
| return; |
| } |
| |
| if (!blkconf_apply_backend_options(&s->conf, blk_is_read_only(blk), true, |
| errp)) { |
| return; |
| } |
| |
| /* |
| * 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. We also need to take another reference so that |
| * blk_detach_dev() doesn't free blk while we still need it. |
| * |
| * The hack is probably a bad idea. |
| */ |
| blk_ref(blk); |
| blk_detach_dev(blk, DEVICE(s)); |
| 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, s->conf.share_rw, |
| s->conf.rerror, s->conf.werror, |
| dev->serial, |
| errp); |
| blk_unref(blk); |
| if (!scsi_dev) { |
| return; |
| } |
| usb_msd_handle_reset(dev); |
| s->scsi_dev = scsi_dev; |
| } |
| |
| static void usb_msd_bot_realize(USBDevice *dev, Error **errp) |
| { |
| MSDState *s = USB_STORAGE_DEV(dev); |
| DeviceState *d = DEVICE(dev); |
| |
| usb_desc_create_serial(dev); |
| usb_desc_init(dev); |
| if (d->hotplugged) { |
| s->dev.auto_attach = 0; |
| } |
| |
| scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(dev), |
| &usb_msd_scsi_info_bot, NULL); |
| usb_msd_handle_reset(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_BLOCK_ERROR_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_storage_initfn(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| USBDeviceClass *uc = USB_DEVICE_CLASS(klass); |
| |
| uc->realize = usb_msd_storage_realize; |
| device_class_set_props(dc, msd_properties); |
| } |
| |
| static void usb_msd_get_bootindex(Object *obj, Visitor *v, const char *name, |
| void *opaque, Error **errp) |
| { |
| USBDevice *dev = USB_DEVICE(obj); |
| MSDState *s = USB_STORAGE_DEV(dev); |
| |
| visit_type_int32(v, name, &s->conf.bootindex, errp); |
| } |
| |
| static void usb_msd_set_bootindex(Object *obj, Visitor *v, const char *name, |
| void *opaque, Error **errp) |
| { |
| USBDevice *dev = USB_DEVICE(obj); |
| MSDState *s = USB_STORAGE_DEV(dev); |
| int32_t boot_index; |
| Error *local_err = NULL; |
| |
| if (!visit_type_int32(v, name, &boot_index, errp)) { |
| return; |
| } |
| /* 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), "bootindex", boot_index, |
| &error_abort); |
| } |
| |
| out: |
| 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); |
| object_property_set_int(obj, "bootindex", -1, NULL); |
| } |
| |
| static void usb_msd_class_bot_initfn(ObjectClass *klass, void *data) |
| { |
| USBDeviceClass *uc = USB_DEVICE_CLASS(klass); |
| |
| uc->realize = usb_msd_bot_realize; |
| uc->attached_settable = true; |
| } |
| |
| static const TypeInfo msd_info = { |
| .name = "usb-storage", |
| .parent = TYPE_USB_STORAGE, |
| .class_init = usb_msd_class_storage_initfn, |
| .instance_init = usb_msd_instance_init, |
| }; |
| |
| static const TypeInfo bot_info = { |
| .name = "usb-bot", |
| .parent = TYPE_USB_STORAGE, |
| .class_init = usb_msd_class_bot_initfn, |
| }; |
| |
| 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); |
| } |
| |
| type_init(usb_msd_register_types) |