root / hw / usb / dev-storage.c @ caad4eb3
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/*
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* USB Mass Storage Device emulation
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*
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* Copyright (c) 2006 CodeSourcery.
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* Written by Paul Brook
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*
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* This code is licensed under the LGPL.
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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-file.h" |
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#include "hw/usb.h" |
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#include "hw/usb/desc.h" |
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#include "hw/scsi/scsi.h" |
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#include "ui/console.h" |
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#include "monitor/monitor.h" |
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#include "sysemu/sysemu.h" |
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#include "sysemu/blockdev.h" |
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|
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//#define DEBUG_MSD
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|
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#ifdef DEBUG_MSD
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#define DPRINTF(fmt, ...) \
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do { printf("usb-msd: " fmt , ## __VA_ARGS__); } while (0) |
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#else
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#define DPRINTF(fmt, ...) do {} while(0) |
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#endif
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|
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/* USB requests. */
|
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#define MassStorageReset 0xff |
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#define GetMaxLun 0xfe |
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|
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enum USBMSDMode {
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USB_MSDM_CBW, /* Command Block. */
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USB_MSDM_DATAOUT, /* Transfer data to device. */
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USB_MSDM_DATAIN, /* Transfer data from device. */
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USB_MSDM_CSW /* Command Status. */
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}; |
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|
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struct usb_msd_csw {
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uint32_t sig; |
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uint32_t tag; |
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uint32_t residue; |
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uint8_t status; |
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}; |
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|
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typedef struct { |
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USBDevice dev; |
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enum USBMSDMode mode;
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uint32_t scsi_off; |
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uint32_t scsi_len; |
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uint32_t data_len; |
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struct usb_msd_csw csw;
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SCSIRequest *req; |
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SCSIBus bus; |
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/* For async completion. */
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USBPacket *packet; |
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/* usb-storage only */
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BlockConf conf; |
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uint32_t removable; |
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} MSDState; |
63 |
|
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struct usb_msd_cbw {
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uint32_t sig; |
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uint32_t tag; |
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uint32_t data_len; |
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uint8_t flags; |
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uint8_t lun; |
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uint8_t cmd_len; |
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uint8_t cmd[16];
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}; |
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|
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enum {
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STR_MANUFACTURER = 1,
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STR_PRODUCT, |
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STR_SERIALNUMBER, |
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STR_CONFIG_FULL, |
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STR_CONFIG_HIGH, |
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STR_CONFIG_SUPER, |
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}; |
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|
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static const USBDescStrings desc_strings = { |
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[STR_MANUFACTURER] = "QEMU",
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[STR_PRODUCT] = "QEMU USB HARDDRIVE",
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[STR_SERIALNUMBER] = "1",
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[STR_CONFIG_FULL] = "Full speed config (usb 1.1)",
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[STR_CONFIG_HIGH] = "High speed config (usb 2.0)",
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[STR_CONFIG_SUPER] = "Super speed config (usb 3.0)",
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}; |
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|
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static const USBDescIface desc_iface_full = { |
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.bInterfaceNumber = 0,
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.bNumEndpoints = 2,
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.bInterfaceClass = USB_CLASS_MASS_STORAGE, |
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.bInterfaceSubClass = 0x06, /* SCSI */ |
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.bInterfaceProtocol = 0x50, /* Bulk */ |
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.eps = (USBDescEndpoint[]) { |
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{ |
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.bEndpointAddress = USB_DIR_IN | 0x01,
|
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.bmAttributes = USB_ENDPOINT_XFER_BULK, |
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.wMaxPacketSize = 64,
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},{ |
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.bEndpointAddress = USB_DIR_OUT | 0x02,
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.bmAttributes = USB_ENDPOINT_XFER_BULK, |
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.wMaxPacketSize = 64,
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}, |
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} |
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}; |
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|
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static const USBDescDevice desc_device_full = { |
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.bcdUSB = 0x0200,
|
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.bMaxPacketSize0 = 8,
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.bNumConfigurations = 1,
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.confs = (USBDescConfig[]) { |
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{ |
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.bNumInterfaces = 1,
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.bConfigurationValue = 1,
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.iConfiguration = STR_CONFIG_FULL, |
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.bmAttributes = 0xc0,
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.nif = 1,
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.ifs = &desc_iface_full, |
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}, |
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}, |
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}; |
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|
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static const USBDescIface desc_iface_high = { |
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.bInterfaceNumber = 0,
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.bNumEndpoints = 2,
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.bInterfaceClass = USB_CLASS_MASS_STORAGE, |
131 |
.bInterfaceSubClass = 0x06, /* SCSI */ |
132 |
.bInterfaceProtocol = 0x50, /* Bulk */ |
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.eps = (USBDescEndpoint[]) { |
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{ |
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.bEndpointAddress = USB_DIR_IN | 0x01,
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.bmAttributes = USB_ENDPOINT_XFER_BULK, |
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.wMaxPacketSize = 512,
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},{ |
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.bEndpointAddress = USB_DIR_OUT | 0x02,
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.bmAttributes = USB_ENDPOINT_XFER_BULK, |
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.wMaxPacketSize = 512,
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}, |
143 |
} |
144 |
}; |
145 |
|
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static const USBDescDevice desc_device_high = { |
147 |
.bcdUSB = 0x0200,
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.bMaxPacketSize0 = 64,
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.bNumConfigurations = 1,
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.confs = (USBDescConfig[]) { |
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{ |
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.bNumInterfaces = 1,
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153 |
.bConfigurationValue = 1,
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154 |
.iConfiguration = STR_CONFIG_HIGH, |
155 |
.bmAttributes = 0xc0,
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.nif = 1,
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.ifs = &desc_iface_high, |
158 |
}, |
159 |
}, |
160 |
}; |
161 |
|
162 |
static const USBDescIface desc_iface_super = { |
163 |
.bInterfaceNumber = 0,
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.bNumEndpoints = 2,
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.bInterfaceClass = USB_CLASS_MASS_STORAGE, |
166 |
.bInterfaceSubClass = 0x06, /* SCSI */ |
167 |
.bInterfaceProtocol = 0x50, /* Bulk */ |
168 |
.eps = (USBDescEndpoint[]) { |
169 |
{ |
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.bEndpointAddress = USB_DIR_IN | 0x01,
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.bmAttributes = USB_ENDPOINT_XFER_BULK, |
172 |
.wMaxPacketSize = 1024,
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.bMaxBurst = 15,
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},{ |
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.bEndpointAddress = USB_DIR_OUT | 0x02,
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.bmAttributes = USB_ENDPOINT_XFER_BULK, |
177 |
.wMaxPacketSize = 1024,
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.bMaxBurst = 15,
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}, |
180 |
} |
181 |
}; |
182 |
|
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static const USBDescDevice desc_device_super = { |
184 |
.bcdUSB = 0x0300,
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.bMaxPacketSize0 = 9,
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186 |
.bNumConfigurations = 1,
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187 |
.confs = (USBDescConfig[]) { |
188 |
{ |
189 |
.bNumInterfaces = 1,
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190 |
.bConfigurationValue = 1,
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191 |
.iConfiguration = STR_CONFIG_SUPER, |
192 |
.bmAttributes = 0xc0,
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.nif = 1,
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.ifs = &desc_iface_super, |
195 |
}, |
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}, |
197 |
}; |
198 |
|
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static const USBDesc desc = { |
200 |
.id = { |
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.idVendor = 0x46f4, /* CRC16() of "QEMU" */ |
202 |
.idProduct = 0x0001,
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203 |
.bcdDevice = 0,
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204 |
.iManufacturer = STR_MANUFACTURER, |
205 |
.iProduct = STR_PRODUCT, |
206 |
.iSerialNumber = STR_SERIALNUMBER, |
207 |
}, |
208 |
.full = &desc_device_full, |
209 |
.high = &desc_device_high, |
210 |
.super = &desc_device_super, |
211 |
.str = desc_strings, |
212 |
}; |
213 |
|
214 |
static void usb_msd_copy_data(MSDState *s, USBPacket *p) |
215 |
{ |
216 |
uint32_t len; |
217 |
len = p->iov.size - p->actual_length; |
218 |
if (len > s->scsi_len)
|
219 |
len = s->scsi_len; |
220 |
usb_packet_copy(p, scsi_req_get_buf(s->req) + s->scsi_off, len); |
221 |
s->scsi_len -= len; |
222 |
s->scsi_off += len; |
223 |
s->data_len -= len; |
224 |
if (s->scsi_len == 0 || s->data_len == 0) { |
225 |
scsi_req_continue(s->req); |
226 |
} |
227 |
} |
228 |
|
229 |
static void usb_msd_send_status(MSDState *s, USBPacket *p) |
230 |
{ |
231 |
int len;
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232 |
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DPRINTF("Command status %d tag 0x%x, len %zd\n",
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s->csw.status, le32_to_cpu(s->csw.tag), p->iov.size); |
235 |
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assert(s->csw.sig == cpu_to_le32(0x53425355));
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len = MIN(sizeof(s->csw), p->iov.size);
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usb_packet_copy(p, &s->csw, len); |
239 |
memset(&s->csw, 0, sizeof(s->csw)); |
240 |
} |
241 |
|
242 |
static void usb_msd_packet_complete(MSDState *s) |
243 |
{ |
244 |
USBPacket *p = s->packet; |
245 |
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/* Set s->packet to NULL before calling usb_packet_complete
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247 |
because another request may be issued before
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248 |
usb_packet_complete returns. */
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DPRINTF("Packet complete %p\n", p);
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s->packet = NULL;
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usb_packet_complete(&s->dev, p); |
252 |
} |
253 |
|
254 |
static void usb_msd_transfer_data(SCSIRequest *req, uint32_t len) |
255 |
{ |
256 |
MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent); |
257 |
USBPacket *p = s->packet; |
258 |
|
259 |
assert((s->mode == USB_MSDM_DATAOUT) == (req->cmd.mode == SCSI_XFER_TO_DEV)); |
260 |
s->scsi_len = len; |
261 |
s->scsi_off = 0;
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262 |
if (p) {
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263 |
usb_msd_copy_data(s, p); |
264 |
p = s->packet; |
265 |
if (p && p->actual_length == p->iov.size) {
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p->status = USB_RET_SUCCESS; /* Clear previous ASYNC status */
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usb_msd_packet_complete(s); |
268 |
} |
269 |
} |
270 |
} |
271 |
|
272 |
static void usb_msd_command_complete(SCSIRequest *req, uint32_t status, size_t resid) |
273 |
{ |
274 |
MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent); |
275 |
USBPacket *p = s->packet; |
276 |
|
277 |
DPRINTF("Command complete %d tag 0x%x\n", status, req->tag);
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278 |
|
279 |
s->csw.sig = cpu_to_le32(0x53425355);
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s->csw.tag = cpu_to_le32(req->tag); |
281 |
s->csw.residue = cpu_to_le32(s->data_len); |
282 |
s->csw.status = status != 0;
|
283 |
|
284 |
if (s->packet) {
|
285 |
if (s->data_len == 0 && s->mode == USB_MSDM_DATAOUT) { |
286 |
/* A deferred packet with no write data remaining must be
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287 |
the status read packet. */
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288 |
usb_msd_send_status(s, p); |
289 |
s->mode = USB_MSDM_CBW; |
290 |
} else if (s->mode == USB_MSDM_CSW) { |
291 |
usb_msd_send_status(s, p); |
292 |
s->mode = USB_MSDM_CBW; |
293 |
} else {
|
294 |
if (s->data_len) {
|
295 |
int len = (p->iov.size - p->actual_length);
|
296 |
usb_packet_skip(p, len); |
297 |
s->data_len -= len; |
298 |
} |
299 |
if (s->data_len == 0) { |
300 |
s->mode = USB_MSDM_CSW; |
301 |
} |
302 |
} |
303 |
p->status = USB_RET_SUCCESS; /* Clear previous ASYNC status */
|
304 |
usb_msd_packet_complete(s); |
305 |
} else if (s->data_len == 0) { |
306 |
s->mode = USB_MSDM_CSW; |
307 |
} |
308 |
scsi_req_unref(req); |
309 |
s->req = NULL;
|
310 |
} |
311 |
|
312 |
static void usb_msd_request_cancelled(SCSIRequest *req) |
313 |
{ |
314 |
MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent); |
315 |
|
316 |
if (req == s->req) {
|
317 |
scsi_req_unref(s->req); |
318 |
s->req = NULL;
|
319 |
s->scsi_len = 0;
|
320 |
} |
321 |
} |
322 |
|
323 |
static void usb_msd_handle_reset(USBDevice *dev) |
324 |
{ |
325 |
MSDState *s = (MSDState *)dev; |
326 |
|
327 |
DPRINTF("Reset\n");
|
328 |
if (s->req) {
|
329 |
scsi_req_cancel(s->req); |
330 |
} |
331 |
assert(s->req == NULL);
|
332 |
|
333 |
if (s->packet) {
|
334 |
s->packet->status = USB_RET_STALL; |
335 |
usb_msd_packet_complete(s); |
336 |
} |
337 |
|
338 |
s->mode = USB_MSDM_CBW; |
339 |
} |
340 |
|
341 |
static void usb_msd_handle_control(USBDevice *dev, USBPacket *p, |
342 |
int request, int value, int index, int length, uint8_t *data) |
343 |
{ |
344 |
MSDState *s = (MSDState *)dev; |
345 |
SCSIDevice *scsi_dev; |
346 |
int ret, maxlun;
|
347 |
|
348 |
ret = usb_desc_handle_control(dev, p, request, value, index, length, data); |
349 |
if (ret >= 0) { |
350 |
return;
|
351 |
} |
352 |
|
353 |
switch (request) {
|
354 |
case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
|
355 |
break;
|
356 |
/* Class specific requests. */
|
357 |
case ClassInterfaceOutRequest | MassStorageReset:
|
358 |
/* Reset state ready for the next CBW. */
|
359 |
s->mode = USB_MSDM_CBW; |
360 |
break;
|
361 |
case ClassInterfaceRequest | GetMaxLun:
|
362 |
maxlun = 0;
|
363 |
for (;;) {
|
364 |
scsi_dev = scsi_device_find(&s->bus, 0, 0, maxlun+1); |
365 |
if (scsi_dev == NULL) { |
366 |
break;
|
367 |
} |
368 |
if (scsi_dev->lun != maxlun+1) { |
369 |
break;
|
370 |
} |
371 |
maxlun++; |
372 |
} |
373 |
DPRINTF("MaxLun %d\n", maxlun);
|
374 |
data[0] = maxlun;
|
375 |
p->actual_length = 1;
|
376 |
break;
|
377 |
default:
|
378 |
p->status = USB_RET_STALL; |
379 |
break;
|
380 |
} |
381 |
} |
382 |
|
383 |
static void usb_msd_cancel_io(USBDevice *dev, USBPacket *p) |
384 |
{ |
385 |
MSDState *s = DO_UPCAST(MSDState, dev, dev); |
386 |
|
387 |
assert(s->packet == p); |
388 |
s->packet = NULL;
|
389 |
|
390 |
if (s->req) {
|
391 |
scsi_req_cancel(s->req); |
392 |
} |
393 |
} |
394 |
|
395 |
static void usb_msd_handle_data(USBDevice *dev, USBPacket *p) |
396 |
{ |
397 |
MSDState *s = (MSDState *)dev; |
398 |
uint32_t tag; |
399 |
struct usb_msd_cbw cbw;
|
400 |
uint8_t devep = p->ep->nr; |
401 |
SCSIDevice *scsi_dev; |
402 |
uint32_t len; |
403 |
|
404 |
switch (p->pid) {
|
405 |
case USB_TOKEN_OUT:
|
406 |
if (devep != 2) |
407 |
goto fail;
|
408 |
|
409 |
switch (s->mode) {
|
410 |
case USB_MSDM_CBW:
|
411 |
if (p->iov.size != 31) { |
412 |
fprintf(stderr, "usb-msd: Bad CBW size");
|
413 |
goto fail;
|
414 |
} |
415 |
usb_packet_copy(p, &cbw, 31);
|
416 |
if (le32_to_cpu(cbw.sig) != 0x43425355) { |
417 |
fprintf(stderr, "usb-msd: Bad signature %08x\n",
|
418 |
le32_to_cpu(cbw.sig)); |
419 |
goto fail;
|
420 |
} |
421 |
DPRINTF("Command on LUN %d\n", cbw.lun);
|
422 |
scsi_dev = scsi_device_find(&s->bus, 0, 0, cbw.lun); |
423 |
if (scsi_dev == NULL) { |
424 |
fprintf(stderr, "usb-msd: Bad LUN %d\n", cbw.lun);
|
425 |
goto fail;
|
426 |
} |
427 |
tag = le32_to_cpu(cbw.tag); |
428 |
s->data_len = le32_to_cpu(cbw.data_len); |
429 |
if (s->data_len == 0) { |
430 |
s->mode = USB_MSDM_CSW; |
431 |
} else if (cbw.flags & 0x80) { |
432 |
s->mode = USB_MSDM_DATAIN; |
433 |
} else {
|
434 |
s->mode = USB_MSDM_DATAOUT; |
435 |
} |
436 |
DPRINTF("Command tag 0x%x flags %08x len %d data %d\n",
|
437 |
tag, cbw.flags, cbw.cmd_len, s->data_len); |
438 |
assert(le32_to_cpu(s->csw.residue) == 0);
|
439 |
s->scsi_len = 0;
|
440 |
s->req = scsi_req_new(scsi_dev, tag, cbw.lun, cbw.cmd, NULL);
|
441 |
#ifdef DEBUG_MSD
|
442 |
scsi_req_print(s->req); |
443 |
#endif
|
444 |
len = scsi_req_enqueue(s->req); |
445 |
if (len) {
|
446 |
scsi_req_continue(s->req); |
447 |
} |
448 |
break;
|
449 |
|
450 |
case USB_MSDM_DATAOUT:
|
451 |
DPRINTF("Data out %zd/%d\n", p->iov.size, s->data_len);
|
452 |
if (p->iov.size > s->data_len) {
|
453 |
goto fail;
|
454 |
} |
455 |
|
456 |
if (s->scsi_len) {
|
457 |
usb_msd_copy_data(s, p); |
458 |
} |
459 |
if (le32_to_cpu(s->csw.residue)) {
|
460 |
int len = p->iov.size - p->actual_length;
|
461 |
if (len) {
|
462 |
usb_packet_skip(p, len); |
463 |
s->data_len -= len; |
464 |
if (s->data_len == 0) { |
465 |
s->mode = USB_MSDM_CSW; |
466 |
} |
467 |
} |
468 |
} |
469 |
if (p->actual_length < p->iov.size) {
|
470 |
DPRINTF("Deferring packet %p [wait data-out]\n", p);
|
471 |
s->packet = p; |
472 |
p->status = USB_RET_ASYNC; |
473 |
} |
474 |
break;
|
475 |
|
476 |
default:
|
477 |
DPRINTF("Unexpected write (len %zd)\n", p->iov.size);
|
478 |
goto fail;
|
479 |
} |
480 |
break;
|
481 |
|
482 |
case USB_TOKEN_IN:
|
483 |
if (devep != 1) |
484 |
goto fail;
|
485 |
|
486 |
switch (s->mode) {
|
487 |
case USB_MSDM_DATAOUT:
|
488 |
if (s->data_len != 0 || p->iov.size < 13) { |
489 |
goto fail;
|
490 |
} |
491 |
/* Waiting for SCSI write to complete. */
|
492 |
s->packet = p; |
493 |
p->status = USB_RET_ASYNC; |
494 |
break;
|
495 |
|
496 |
case USB_MSDM_CSW:
|
497 |
if (p->iov.size < 13) { |
498 |
goto fail;
|
499 |
} |
500 |
|
501 |
if (s->req) {
|
502 |
/* still in flight */
|
503 |
DPRINTF("Deferring packet %p [wait status]\n", p);
|
504 |
s->packet = p; |
505 |
p->status = USB_RET_ASYNC; |
506 |
} else {
|
507 |
usb_msd_send_status(s, p); |
508 |
s->mode = USB_MSDM_CBW; |
509 |
} |
510 |
break;
|
511 |
|
512 |
case USB_MSDM_DATAIN:
|
513 |
DPRINTF("Data in %zd/%d, scsi_len %d\n",
|
514 |
p->iov.size, s->data_len, s->scsi_len); |
515 |
if (s->scsi_len) {
|
516 |
usb_msd_copy_data(s, p); |
517 |
} |
518 |
if (le32_to_cpu(s->csw.residue)) {
|
519 |
int len = p->iov.size - p->actual_length;
|
520 |
if (len) {
|
521 |
usb_packet_skip(p, len); |
522 |
s->data_len -= len; |
523 |
if (s->data_len == 0) { |
524 |
s->mode = USB_MSDM_CSW; |
525 |
} |
526 |
} |
527 |
} |
528 |
if (p->actual_length < p->iov.size) {
|
529 |
DPRINTF("Deferring packet %p [wait data-in]\n", p);
|
530 |
s->packet = p; |
531 |
p->status = USB_RET_ASYNC; |
532 |
} |
533 |
break;
|
534 |
|
535 |
default:
|
536 |
DPRINTF("Unexpected read (len %zd)\n", p->iov.size);
|
537 |
goto fail;
|
538 |
} |
539 |
break;
|
540 |
|
541 |
default:
|
542 |
DPRINTF("Bad token\n");
|
543 |
fail:
|
544 |
p->status = USB_RET_STALL; |
545 |
break;
|
546 |
} |
547 |
} |
548 |
|
549 |
static void usb_msd_password_cb(void *opaque, int err) |
550 |
{ |
551 |
MSDState *s = opaque; |
552 |
|
553 |
if (!err)
|
554 |
err = usb_device_attach(&s->dev); |
555 |
|
556 |
if (err)
|
557 |
qdev_unplug(&s->dev.qdev, NULL);
|
558 |
} |
559 |
|
560 |
static void *usb_msd_load_request(QEMUFile *f, SCSIRequest *req) |
561 |
{ |
562 |
MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent); |
563 |
|
564 |
/* nothing to load, just store req in our state struct */
|
565 |
assert(s->req == NULL);
|
566 |
scsi_req_ref(req); |
567 |
s->req = req; |
568 |
return NULL; |
569 |
} |
570 |
|
571 |
static const struct SCSIBusInfo usb_msd_scsi_info_storage = { |
572 |
.tcq = false,
|
573 |
.max_target = 0,
|
574 |
.max_lun = 0,
|
575 |
|
576 |
.transfer_data = usb_msd_transfer_data, |
577 |
.complete = usb_msd_command_complete, |
578 |
.cancel = usb_msd_request_cancelled, |
579 |
.load_request = usb_msd_load_request, |
580 |
}; |
581 |
|
582 |
static const struct SCSIBusInfo usb_msd_scsi_info_bot = { |
583 |
.tcq = false,
|
584 |
.max_target = 0,
|
585 |
.max_lun = 15,
|
586 |
|
587 |
.transfer_data = usb_msd_transfer_data, |
588 |
.complete = usb_msd_command_complete, |
589 |
.cancel = usb_msd_request_cancelled, |
590 |
.load_request = usb_msd_load_request, |
591 |
}; |
592 |
|
593 |
static int usb_msd_initfn_storage(USBDevice *dev) |
594 |
{ |
595 |
MSDState *s = DO_UPCAST(MSDState, dev, dev); |
596 |
BlockDriverState *bs = s->conf.bs; |
597 |
SCSIDevice *scsi_dev; |
598 |
Error *err = NULL;
|
599 |
|
600 |
if (!bs) {
|
601 |
error_report("drive property not set");
|
602 |
return -1; |
603 |
} |
604 |
|
605 |
blkconf_serial(&s->conf, &dev->serial); |
606 |
|
607 |
/*
|
608 |
* Hack alert: this pretends to be a block device, but it's really
|
609 |
* a SCSI bus that can serve only a single device, which it
|
610 |
* creates automatically. But first it needs to detach from its
|
611 |
* blockdev, or else scsi_bus_legacy_add_drive() dies when it
|
612 |
* attaches again.
|
613 |
*
|
614 |
* The hack is probably a bad idea.
|
615 |
*/
|
616 |
bdrv_detach_dev(bs, &s->dev.qdev); |
617 |
s->conf.bs = NULL;
|
618 |
|
619 |
usb_desc_create_serial(dev); |
620 |
usb_desc_init(dev); |
621 |
scsi_bus_new(&s->bus, &s->dev.qdev, &usb_msd_scsi_info_storage, NULL);
|
622 |
scsi_dev = scsi_bus_legacy_add_drive(&s->bus, bs, 0, !!s->removable,
|
623 |
s->conf.bootindex, dev->serial, |
624 |
&err); |
625 |
if (!scsi_dev) {
|
626 |
return -1; |
627 |
} |
628 |
s->bus.qbus.allow_hotplug = 0;
|
629 |
usb_msd_handle_reset(dev); |
630 |
|
631 |
if (bdrv_key_required(bs)) {
|
632 |
if (cur_mon) {
|
633 |
monitor_read_bdrv_key_start(cur_mon, bs, usb_msd_password_cb, s); |
634 |
s->dev.auto_attach = 0;
|
635 |
} else {
|
636 |
autostart = 0;
|
637 |
} |
638 |
} |
639 |
|
640 |
return 0; |
641 |
} |
642 |
|
643 |
static int usb_msd_initfn_bot(USBDevice *dev) |
644 |
{ |
645 |
MSDState *s = DO_UPCAST(MSDState, dev, dev); |
646 |
|
647 |
usb_desc_create_serial(dev); |
648 |
usb_desc_init(dev); |
649 |
scsi_bus_new(&s->bus, &s->dev.qdev, &usb_msd_scsi_info_bot, NULL);
|
650 |
s->bus.qbus.allow_hotplug = 0;
|
651 |
usb_msd_handle_reset(dev); |
652 |
|
653 |
return 0; |
654 |
} |
655 |
|
656 |
static USBDevice *usb_msd_init(USBBus *bus, const char *filename) |
657 |
{ |
658 |
static int nr=0; |
659 |
char id[8]; |
660 |
QemuOpts *opts; |
661 |
DriveInfo *dinfo; |
662 |
USBDevice *dev; |
663 |
const char *p1; |
664 |
char fmt[32]; |
665 |
|
666 |
/* parse -usbdevice disk: syntax into drive opts */
|
667 |
snprintf(id, sizeof(id), "usb%d", nr++); |
668 |
opts = qemu_opts_create(qemu_find_opts("drive"), id, 0, NULL); |
669 |
|
670 |
p1 = strchr(filename, ':');
|
671 |
if (p1++) {
|
672 |
const char *p2; |
673 |
|
674 |
if (strstart(filename, "format=", &p2)) { |
675 |
int len = MIN(p1 - p2, sizeof(fmt)); |
676 |
pstrcpy(fmt, len, p2); |
677 |
qemu_opt_set(opts, "format", fmt);
|
678 |
} else if (*filename != ':') { |
679 |
printf("unrecognized USB mass-storage option %s\n", filename);
|
680 |
return NULL; |
681 |
} |
682 |
filename = p1; |
683 |
} |
684 |
if (!*filename) {
|
685 |
printf("block device specification needed\n");
|
686 |
return NULL; |
687 |
} |
688 |
qemu_opt_set(opts, "file", filename);
|
689 |
qemu_opt_set(opts, "if", "none"); |
690 |
|
691 |
/* create host drive */
|
692 |
dinfo = drive_init(opts, 0);
|
693 |
if (!dinfo) {
|
694 |
qemu_opts_del(opts); |
695 |
return NULL; |
696 |
} |
697 |
|
698 |
/* create guest device */
|
699 |
dev = usb_create(bus, "usb-storage");
|
700 |
if (!dev) {
|
701 |
return NULL; |
702 |
} |
703 |
if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) { |
704 |
qdev_free(&dev->qdev); |
705 |
return NULL; |
706 |
} |
707 |
if (qdev_init(&dev->qdev) < 0) |
708 |
return NULL; |
709 |
|
710 |
return dev;
|
711 |
} |
712 |
|
713 |
static const VMStateDescription vmstate_usb_msd = { |
714 |
.name = "usb-storage",
|
715 |
.version_id = 1,
|
716 |
.minimum_version_id = 1,
|
717 |
.fields = (VMStateField []) { |
718 |
VMSTATE_USB_DEVICE(dev, MSDState), |
719 |
VMSTATE_UINT32(mode, MSDState), |
720 |
VMSTATE_UINT32(scsi_len, MSDState), |
721 |
VMSTATE_UINT32(scsi_off, MSDState), |
722 |
VMSTATE_UINT32(data_len, MSDState), |
723 |
VMSTATE_UINT32(csw.sig, MSDState), |
724 |
VMSTATE_UINT32(csw.tag, MSDState), |
725 |
VMSTATE_UINT32(csw.residue, MSDState), |
726 |
VMSTATE_UINT8(csw.status, MSDState), |
727 |
VMSTATE_END_OF_LIST() |
728 |
} |
729 |
}; |
730 |
|
731 |
static Property msd_properties[] = {
|
732 |
DEFINE_BLOCK_PROPERTIES(MSDState, conf), |
733 |
DEFINE_PROP_BIT("removable", MSDState, removable, 0, false), |
734 |
DEFINE_PROP_END_OF_LIST(), |
735 |
}; |
736 |
|
737 |
static void usb_msd_class_initfn_common(ObjectClass *klass) |
738 |
{ |
739 |
DeviceClass *dc = DEVICE_CLASS(klass); |
740 |
USBDeviceClass *uc = USB_DEVICE_CLASS(klass); |
741 |
|
742 |
uc->product_desc = "QEMU USB MSD";
|
743 |
uc->usb_desc = &desc; |
744 |
uc->cancel_packet = usb_msd_cancel_io; |
745 |
uc->handle_attach = usb_desc_attach; |
746 |
uc->handle_reset = usb_msd_handle_reset; |
747 |
uc->handle_control = usb_msd_handle_control; |
748 |
uc->handle_data = usb_msd_handle_data; |
749 |
dc->fw_name = "storage";
|
750 |
dc->vmsd = &vmstate_usb_msd; |
751 |
} |
752 |
|
753 |
static void usb_msd_class_initfn_storage(ObjectClass *klass, void *data) |
754 |
{ |
755 |
DeviceClass *dc = DEVICE_CLASS(klass); |
756 |
USBDeviceClass *uc = USB_DEVICE_CLASS(klass); |
757 |
|
758 |
uc->init = usb_msd_initfn_storage; |
759 |
dc->props = msd_properties; |
760 |
usb_msd_class_initfn_common(klass); |
761 |
} |
762 |
|
763 |
static void usb_msd_class_initfn_bot(ObjectClass *klass, void *data) |
764 |
{ |
765 |
USBDeviceClass *uc = USB_DEVICE_CLASS(klass); |
766 |
|
767 |
uc->init = usb_msd_initfn_bot; |
768 |
usb_msd_class_initfn_common(klass); |
769 |
} |
770 |
|
771 |
static const TypeInfo msd_info = { |
772 |
.name = "usb-storage",
|
773 |
.parent = TYPE_USB_DEVICE, |
774 |
.instance_size = sizeof(MSDState),
|
775 |
.class_init = usb_msd_class_initfn_storage, |
776 |
}; |
777 |
|
778 |
static const TypeInfo bot_info = { |
779 |
.name = "usb-bot",
|
780 |
.parent = TYPE_USB_DEVICE, |
781 |
.instance_size = sizeof(MSDState),
|
782 |
.class_init = usb_msd_class_initfn_bot, |
783 |
}; |
784 |
|
785 |
static void usb_msd_register_types(void) |
786 |
{ |
787 |
type_register_static(&msd_info); |
788 |
type_register_static(&bot_info); |
789 |
usb_legacy_register("usb-storage", "disk", usb_msd_init); |
790 |
} |
791 |
|
792 |
type_init(usb_msd_register_types) |