root / hw / usb-msd.c @ ed5a83dd
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1 | 5fafdf24 | ths | /*
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2 | 2e5d83bb | pbrook | * USB Mass Storage Device emulation
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3 | 2e5d83bb | pbrook | *
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4 | 2e5d83bb | pbrook | * Copyright (c) 2006 CodeSourcery.
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5 | 2e5d83bb | pbrook | * Written by Paul Brook
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6 | 2e5d83bb | pbrook | *
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7 | 2e5d83bb | pbrook | * This code is licenced under the LGPL.
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8 | 2e5d83bb | pbrook | */
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9 | 2e5d83bb | pbrook | |
10 | 87ecb68b | pbrook | #include "qemu-common.h" |
11 | 7fc2f2c0 | Gerd Hoffmann | #include "qemu-option.h" |
12 | 7fc2f2c0 | Gerd Hoffmann | #include "qemu-config.h" |
13 | 87ecb68b | pbrook | #include "usb.h" |
14 | 81bfd2f2 | Gerd Hoffmann | #include "usb-desc.h" |
15 | 43b443b6 | Gerd Hoffmann | #include "scsi.h" |
16 | c0f4ce77 | aliguori | #include "console.h" |
17 | b3e461d3 | Gerd Hoffmann | #include "monitor.h" |
18 | 666daa68 | Markus Armbruster | #include "sysemu.h" |
19 | 2446333c | Blue Swirl | #include "blockdev.h" |
20 | 2e5d83bb | pbrook | |
21 | 2e5d83bb | pbrook | //#define DEBUG_MSD
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22 | 2e5d83bb | pbrook | |
23 | 2e5d83bb | pbrook | #ifdef DEBUG_MSD
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24 | 001faf32 | Blue Swirl | #define DPRINTF(fmt, ...) \
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25 | 001faf32 | Blue Swirl | do { printf("usb-msd: " fmt , ## __VA_ARGS__); } while (0) |
26 | 2e5d83bb | pbrook | #else
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27 | 001faf32 | Blue Swirl | #define DPRINTF(fmt, ...) do {} while(0) |
28 | 2e5d83bb | pbrook | #endif
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29 | 2e5d83bb | pbrook | |
30 | 2e5d83bb | pbrook | /* USB requests. */
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31 | 2e5d83bb | pbrook | #define MassStorageReset 0xff |
32 | 2e5d83bb | pbrook | #define GetMaxLun 0xfe |
33 | 2e5d83bb | pbrook | |
34 | 2e5d83bb | pbrook | enum USBMSDMode {
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35 | 2e5d83bb | pbrook | USB_MSDM_CBW, /* Command Block. */
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36 | 2e5d83bb | pbrook | USB_MSDM_DATAOUT, /* Tranfer data to device. */
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37 | 2e5d83bb | pbrook | USB_MSDM_DATAIN, /* Transfer data from device. */
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38 | 2e5d83bb | pbrook | USB_MSDM_CSW /* Command Status. */
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39 | 2e5d83bb | pbrook | }; |
40 | 2e5d83bb | pbrook | |
41 | 2e5d83bb | pbrook | typedef struct { |
42 | 2e5d83bb | pbrook | USBDevice dev; |
43 | 2e5d83bb | pbrook | enum USBMSDMode mode;
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44 | a917d384 | pbrook | uint32_t scsi_len; |
45 | a917d384 | pbrook | uint8_t *scsi_buf; |
46 | a917d384 | pbrook | uint32_t usb_len; |
47 | a917d384 | pbrook | uint8_t *usb_buf; |
48 | 2e5d83bb | pbrook | uint32_t data_len; |
49 | a917d384 | pbrook | uint32_t residue; |
50 | 2e5d83bb | pbrook | uint32_t tag; |
51 | ca9c39fa | Gerd Hoffmann | SCSIBus bus; |
52 | 428c149b | Christoph Hellwig | BlockConf conf; |
53 | 2e5d83bb | pbrook | SCSIDevice *scsi_dev; |
54 | 2e5d83bb | pbrook | int result;
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55 | 4d611c9a | pbrook | /* For async completion. */
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56 | 4d611c9a | pbrook | USBPacket *packet; |
57 | 2e5d83bb | pbrook | } MSDState; |
58 | 2e5d83bb | pbrook | |
59 | a917d384 | pbrook | struct usb_msd_cbw {
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60 | a917d384 | pbrook | uint32_t sig; |
61 | a917d384 | pbrook | uint32_t tag; |
62 | a917d384 | pbrook | uint32_t data_len; |
63 | a917d384 | pbrook | uint8_t flags; |
64 | a917d384 | pbrook | uint8_t lun; |
65 | a917d384 | pbrook | uint8_t cmd_len; |
66 | a917d384 | pbrook | uint8_t cmd[16];
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67 | a917d384 | pbrook | }; |
68 | a917d384 | pbrook | |
69 | a917d384 | pbrook | struct usb_msd_csw {
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70 | a917d384 | pbrook | uint32_t sig; |
71 | a917d384 | pbrook | uint32_t tag; |
72 | a917d384 | pbrook | uint32_t residue; |
73 | a917d384 | pbrook | uint8_t status; |
74 | a917d384 | pbrook | }; |
75 | a917d384 | pbrook | |
76 | 81bfd2f2 | Gerd Hoffmann | enum {
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77 | 81bfd2f2 | Gerd Hoffmann | STR_MANUFACTURER = 1,
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78 | 81bfd2f2 | Gerd Hoffmann | STR_PRODUCT, |
79 | 81bfd2f2 | Gerd Hoffmann | STR_SERIALNUMBER, |
80 | 2e5d83bb | pbrook | }; |
81 | 2e5d83bb | pbrook | |
82 | 81bfd2f2 | Gerd Hoffmann | static const USBDescStrings desc_strings = { |
83 | 81bfd2f2 | Gerd Hoffmann | [STR_MANUFACTURER] = "QEMU " QEMU_VERSION,
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84 | 81bfd2f2 | Gerd Hoffmann | [STR_PRODUCT] = "QEMU USB HARDDRIVE",
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85 | 81bfd2f2 | Gerd Hoffmann | [STR_SERIALNUMBER] = "1",
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86 | 81bfd2f2 | Gerd Hoffmann | }; |
87 | 81bfd2f2 | Gerd Hoffmann | |
88 | 81bfd2f2 | Gerd Hoffmann | static const USBDescIface desc_iface0 = { |
89 | 81bfd2f2 | Gerd Hoffmann | .bInterfaceNumber = 0,
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90 | 81bfd2f2 | Gerd Hoffmann | .bNumEndpoints = 2,
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91 | 81bfd2f2 | Gerd Hoffmann | .bInterfaceClass = USB_CLASS_MASS_STORAGE, |
92 | 81bfd2f2 | Gerd Hoffmann | .bInterfaceSubClass = 0x06, /* SCSI */ |
93 | 81bfd2f2 | Gerd Hoffmann | .bInterfaceProtocol = 0x50, /* Bulk */ |
94 | 81bfd2f2 | Gerd Hoffmann | .eps = (USBDescEndpoint[]) { |
95 | 81bfd2f2 | Gerd Hoffmann | { |
96 | 81bfd2f2 | Gerd Hoffmann | .bEndpointAddress = USB_DIR_IN | 0x01,
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97 | 81bfd2f2 | Gerd Hoffmann | .bmAttributes = USB_ENDPOINT_XFER_BULK, |
98 | 81bfd2f2 | Gerd Hoffmann | .wMaxPacketSize = 64,
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99 | 81bfd2f2 | Gerd Hoffmann | },{ |
100 | 81bfd2f2 | Gerd Hoffmann | .bEndpointAddress = USB_DIR_OUT | 0x02,
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101 | 81bfd2f2 | Gerd Hoffmann | .bmAttributes = USB_ENDPOINT_XFER_BULK, |
102 | 81bfd2f2 | Gerd Hoffmann | .wMaxPacketSize = 64,
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103 | 81bfd2f2 | Gerd Hoffmann | }, |
104 | 81bfd2f2 | Gerd Hoffmann | } |
105 | 81bfd2f2 | Gerd Hoffmann | }; |
106 | 81bfd2f2 | Gerd Hoffmann | |
107 | 81bfd2f2 | Gerd Hoffmann | static const USBDescDevice desc_device = { |
108 | 81bfd2f2 | Gerd Hoffmann | .bcdUSB = 0x0100,
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109 | 81bfd2f2 | Gerd Hoffmann | .bMaxPacketSize0 = 8,
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110 | 81bfd2f2 | Gerd Hoffmann | .bNumConfigurations = 1,
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111 | 81bfd2f2 | Gerd Hoffmann | .confs = (USBDescConfig[]) { |
112 | 81bfd2f2 | Gerd Hoffmann | { |
113 | 81bfd2f2 | Gerd Hoffmann | .bNumInterfaces = 1,
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114 | 81bfd2f2 | Gerd Hoffmann | .bConfigurationValue = 1,
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115 | 81bfd2f2 | Gerd Hoffmann | .bmAttributes = 0xc0,
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116 | 81bfd2f2 | Gerd Hoffmann | .ifs = &desc_iface0, |
117 | 81bfd2f2 | Gerd Hoffmann | }, |
118 | 81bfd2f2 | Gerd Hoffmann | }, |
119 | 81bfd2f2 | Gerd Hoffmann | }; |
120 | 81bfd2f2 | Gerd Hoffmann | |
121 | 81bfd2f2 | Gerd Hoffmann | static const USBDesc desc = { |
122 | 81bfd2f2 | Gerd Hoffmann | .id = { |
123 | 81bfd2f2 | Gerd Hoffmann | .idVendor = 0,
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124 | 81bfd2f2 | Gerd Hoffmann | .idProduct = 0,
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125 | 81bfd2f2 | Gerd Hoffmann | .bcdDevice = 0,
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126 | 81bfd2f2 | Gerd Hoffmann | .iManufacturer = STR_MANUFACTURER, |
127 | 81bfd2f2 | Gerd Hoffmann | .iProduct = STR_PRODUCT, |
128 | 81bfd2f2 | Gerd Hoffmann | .iSerialNumber = STR_SERIALNUMBER, |
129 | 81bfd2f2 | Gerd Hoffmann | }, |
130 | 81bfd2f2 | Gerd Hoffmann | .full = &desc_device, |
131 | 81bfd2f2 | Gerd Hoffmann | .str = desc_strings, |
132 | 2e5d83bb | pbrook | }; |
133 | 2e5d83bb | pbrook | |
134 | a917d384 | pbrook | static void usb_msd_copy_data(MSDState *s) |
135 | a917d384 | pbrook | { |
136 | a917d384 | pbrook | uint32_t len; |
137 | a917d384 | pbrook | len = s->usb_len; |
138 | a917d384 | pbrook | if (len > s->scsi_len)
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139 | a917d384 | pbrook | len = s->scsi_len; |
140 | a917d384 | pbrook | if (s->mode == USB_MSDM_DATAIN) {
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141 | a917d384 | pbrook | memcpy(s->usb_buf, s->scsi_buf, len); |
142 | a917d384 | pbrook | } else {
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143 | a917d384 | pbrook | memcpy(s->scsi_buf, s->usb_buf, len); |
144 | a917d384 | pbrook | } |
145 | a917d384 | pbrook | s->usb_len -= len; |
146 | a917d384 | pbrook | s->scsi_len -= len; |
147 | a917d384 | pbrook | s->usb_buf += len; |
148 | a917d384 | pbrook | s->scsi_buf += len; |
149 | a917d384 | pbrook | s->data_len -= len; |
150 | a917d384 | pbrook | if (s->scsi_len == 0) { |
151 | a917d384 | pbrook | if (s->mode == USB_MSDM_DATAIN) {
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152 | d52affa7 | Gerd Hoffmann | s->scsi_dev->info->read_data(s->scsi_dev, s->tag); |
153 | a917d384 | pbrook | } else if (s->mode == USB_MSDM_DATAOUT) { |
154 | d52affa7 | Gerd Hoffmann | s->scsi_dev->info->write_data(s->scsi_dev, s->tag); |
155 | a917d384 | pbrook | } |
156 | a917d384 | pbrook | } |
157 | a917d384 | pbrook | } |
158 | a917d384 | pbrook | |
159 | a917d384 | pbrook | static void usb_msd_send_status(MSDState *s) |
160 | a917d384 | pbrook | { |
161 | a917d384 | pbrook | struct usb_msd_csw csw;
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162 | a917d384 | pbrook | |
163 | a917d384 | pbrook | csw.sig = cpu_to_le32(0x53425355);
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164 | a917d384 | pbrook | csw.tag = cpu_to_le32(s->tag); |
165 | a917d384 | pbrook | csw.residue = s->residue; |
166 | a917d384 | pbrook | csw.status = s->result; |
167 | a917d384 | pbrook | memcpy(s->usb_buf, &csw, 13);
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168 | a917d384 | pbrook | } |
169 | a917d384 | pbrook | |
170 | d52affa7 | Gerd Hoffmann | static void usb_msd_command_complete(SCSIBus *bus, int reason, uint32_t tag, |
171 | a917d384 | pbrook | uint32_t arg) |
172 | 2e5d83bb | pbrook | { |
173 | d52affa7 | Gerd Hoffmann | MSDState *s = DO_UPCAST(MSDState, dev.qdev, bus->qbus.parent); |
174 | a917d384 | pbrook | USBPacket *p = s->packet; |
175 | 4d611c9a | pbrook | |
176 | a917d384 | pbrook | if (tag != s->tag) {
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177 | a917d384 | pbrook | fprintf(stderr, "usb-msd: Unexpected SCSI Tag 0x%x\n", tag);
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178 | a917d384 | pbrook | } |
179 | 4d611c9a | pbrook | if (reason == SCSI_REASON_DONE) {
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180 | a917d384 | pbrook | DPRINTF("Command complete %d\n", arg);
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181 | a917d384 | pbrook | s->residue = s->data_len; |
182 | a917d384 | pbrook | s->result = arg != 0;
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183 | a917d384 | pbrook | if (s->packet) {
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184 | a917d384 | pbrook | if (s->data_len == 0 && s->mode == USB_MSDM_DATAOUT) { |
185 | a917d384 | pbrook | /* A deferred packet with no write data remaining must be
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186 | a917d384 | pbrook | the status read packet. */
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187 | a917d384 | pbrook | usb_msd_send_status(s); |
188 | a917d384 | pbrook | s->mode = USB_MSDM_CBW; |
189 | a917d384 | pbrook | } else {
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190 | a917d384 | pbrook | if (s->data_len) {
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191 | a917d384 | pbrook | s->data_len -= s->usb_len; |
192 | a917d384 | pbrook | if (s->mode == USB_MSDM_DATAIN)
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193 | a917d384 | pbrook | memset(s->usb_buf, 0, s->usb_len);
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194 | a917d384 | pbrook | s->usb_len = 0;
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195 | a917d384 | pbrook | } |
196 | a917d384 | pbrook | if (s->data_len == 0) |
197 | a917d384 | pbrook | s->mode = USB_MSDM_CSW; |
198 | a917d384 | pbrook | } |
199 | a917d384 | pbrook | s->packet = NULL;
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200 | a917d384 | pbrook | usb_packet_complete(p); |
201 | a917d384 | pbrook | } else if (s->data_len == 0) { |
202 | a917d384 | pbrook | s->mode = USB_MSDM_CSW; |
203 | a917d384 | pbrook | } |
204 | a917d384 | pbrook | return;
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205 | 4d611c9a | pbrook | } |
206 | a917d384 | pbrook | s->scsi_len = arg; |
207 | d52affa7 | Gerd Hoffmann | s->scsi_buf = s->scsi_dev->info->get_buf(s->scsi_dev, tag); |
208 | a917d384 | pbrook | if (p) {
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209 | a917d384 | pbrook | usb_msd_copy_data(s); |
210 | a917d384 | pbrook | if (s->usb_len == 0) { |
211 | a917d384 | pbrook | /* Set s->packet to NULL before calling usb_packet_complete
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212 | a917d384 | pbrook | because annother request may be issued before
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213 | a917d384 | pbrook | usb_packet_complete returns. */
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214 | a917d384 | pbrook | DPRINTF("Packet complete %p\n", p);
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215 | a917d384 | pbrook | s->packet = NULL;
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216 | a917d384 | pbrook | usb_packet_complete(p); |
217 | a917d384 | pbrook | } |
218 | 4d611c9a | pbrook | } |
219 | 2e5d83bb | pbrook | } |
220 | 2e5d83bb | pbrook | |
221 | 059809e4 | bellard | static void usb_msd_handle_reset(USBDevice *dev) |
222 | 2e5d83bb | pbrook | { |
223 | 2e5d83bb | pbrook | MSDState *s = (MSDState *)dev; |
224 | 2e5d83bb | pbrook | |
225 | 2e5d83bb | pbrook | DPRINTF("Reset\n");
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226 | 2e5d83bb | pbrook | s->mode = USB_MSDM_CBW; |
227 | 2e5d83bb | pbrook | } |
228 | 2e5d83bb | pbrook | |
229 | 2e5d83bb | pbrook | static int usb_msd_handle_control(USBDevice *dev, int request, int value, |
230 | 2e5d83bb | pbrook | int index, int length, uint8_t *data) |
231 | 2e5d83bb | pbrook | { |
232 | 2e5d83bb | pbrook | MSDState *s = (MSDState *)dev; |
233 | 81bfd2f2 | Gerd Hoffmann | int ret;
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234 | 2e5d83bb | pbrook | |
235 | 81bfd2f2 | Gerd Hoffmann | ret = usb_desc_handle_control(dev, request, value, index, length, data); |
236 | 81bfd2f2 | Gerd Hoffmann | if (ret >= 0) { |
237 | 81bfd2f2 | Gerd Hoffmann | return ret;
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238 | 81bfd2f2 | Gerd Hoffmann | } |
239 | 81bfd2f2 | Gerd Hoffmann | |
240 | 81bfd2f2 | Gerd Hoffmann | ret = 0;
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241 | 2e5d83bb | pbrook | switch (request) {
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242 | 2e5d83bb | pbrook | case DeviceRequest | USB_REQ_GET_INTERFACE:
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243 | 2e5d83bb | pbrook | data[0] = 0; |
244 | 2e5d83bb | pbrook | ret = 1;
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245 | 2e5d83bb | pbrook | break;
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246 | 2e5d83bb | pbrook | case DeviceOutRequest | USB_REQ_SET_INTERFACE:
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247 | 2e5d83bb | pbrook | ret = 0;
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248 | 2e5d83bb | pbrook | break;
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249 | 2e5d83bb | pbrook | case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
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250 | e5322f76 | Arnaud Patard (Rtp) | ret = 0;
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251 | e5322f76 | Arnaud Patard (Rtp) | break;
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252 | e5322f76 | Arnaud Patard (Rtp) | case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
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253 | 2e5d83bb | pbrook | ret = 0;
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254 | 2e5d83bb | pbrook | break;
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255 | 2e5d83bb | pbrook | /* Class specific requests. */
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256 | f3571b1a | Max Reitz | case ClassInterfaceOutRequest | MassStorageReset:
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257 | 2e5d83bb | pbrook | /* Reset state ready for the next CBW. */
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258 | 2e5d83bb | pbrook | s->mode = USB_MSDM_CBW; |
259 | 2e5d83bb | pbrook | ret = 0;
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260 | 2e5d83bb | pbrook | break;
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261 | f3571b1a | Max Reitz | case ClassInterfaceRequest | GetMaxLun:
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262 | 2e5d83bb | pbrook | data[0] = 0; |
263 | 2e5d83bb | pbrook | ret = 1;
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264 | 2e5d83bb | pbrook | break;
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265 | 2e5d83bb | pbrook | default:
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266 | 2e5d83bb | pbrook | ret = USB_RET_STALL; |
267 | 2e5d83bb | pbrook | break;
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268 | 2e5d83bb | pbrook | } |
269 | 2e5d83bb | pbrook | return ret;
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270 | 2e5d83bb | pbrook | } |
271 | 2e5d83bb | pbrook | |
272 | 4d611c9a | pbrook | static void usb_msd_cancel_io(USBPacket *p, void *opaque) |
273 | 4d611c9a | pbrook | { |
274 | 4d611c9a | pbrook | MSDState *s = opaque; |
275 | d52affa7 | Gerd Hoffmann | s->scsi_dev->info->cancel_io(s->scsi_dev, s->tag); |
276 | 4d611c9a | pbrook | s->packet = NULL;
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277 | a917d384 | pbrook | s->scsi_len = 0;
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278 | 4d611c9a | pbrook | } |
279 | 4d611c9a | pbrook | |
280 | 4d611c9a | pbrook | static int usb_msd_handle_data(USBDevice *dev, USBPacket *p) |
281 | 2e5d83bb | pbrook | { |
282 | 2e5d83bb | pbrook | MSDState *s = (MSDState *)dev; |
283 | 2e5d83bb | pbrook | int ret = 0; |
284 | 2e5d83bb | pbrook | struct usb_msd_cbw cbw;
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285 | 4d611c9a | pbrook | uint8_t devep = p->devep; |
286 | 4d611c9a | pbrook | uint8_t *data = p->data; |
287 | 4d611c9a | pbrook | int len = p->len;
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288 | 2e5d83bb | pbrook | |
289 | 4d611c9a | pbrook | switch (p->pid) {
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290 | 2e5d83bb | pbrook | case USB_TOKEN_OUT:
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291 | 2e5d83bb | pbrook | if (devep != 2) |
292 | 2e5d83bb | pbrook | goto fail;
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293 | 2e5d83bb | pbrook | |
294 | 2e5d83bb | pbrook | switch (s->mode) {
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295 | 2e5d83bb | pbrook | case USB_MSDM_CBW:
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296 | 2e5d83bb | pbrook | if (len != 31) { |
297 | 2e5d83bb | pbrook | fprintf(stderr, "usb-msd: Bad CBW size");
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298 | 2e5d83bb | pbrook | goto fail;
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299 | 2e5d83bb | pbrook | } |
300 | 2e5d83bb | pbrook | memcpy(&cbw, data, 31);
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301 | 2e5d83bb | pbrook | if (le32_to_cpu(cbw.sig) != 0x43425355) { |
302 | 2e5d83bb | pbrook | fprintf(stderr, "usb-msd: Bad signature %08x\n",
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303 | 2e5d83bb | pbrook | le32_to_cpu(cbw.sig)); |
304 | 2e5d83bb | pbrook | goto fail;
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305 | 2e5d83bb | pbrook | } |
306 | 2e5d83bb | pbrook | DPRINTF("Command on LUN %d\n", cbw.lun);
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307 | 2e5d83bb | pbrook | if (cbw.lun != 0) { |
308 | 2e5d83bb | pbrook | fprintf(stderr, "usb-msd: Bad LUN %d\n", cbw.lun);
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309 | 2e5d83bb | pbrook | goto fail;
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310 | 2e5d83bb | pbrook | } |
311 | 2e5d83bb | pbrook | s->tag = le32_to_cpu(cbw.tag); |
312 | 2e5d83bb | pbrook | s->data_len = le32_to_cpu(cbw.data_len); |
313 | 2e5d83bb | pbrook | if (s->data_len == 0) { |
314 | 2e5d83bb | pbrook | s->mode = USB_MSDM_CSW; |
315 | 2e5d83bb | pbrook | } else if (cbw.flags & 0x80) { |
316 | 2e5d83bb | pbrook | s->mode = USB_MSDM_DATAIN; |
317 | 2e5d83bb | pbrook | } else {
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318 | 2e5d83bb | pbrook | s->mode = USB_MSDM_DATAOUT; |
319 | 2e5d83bb | pbrook | } |
320 | 2e5d83bb | pbrook | DPRINTF("Command tag 0x%x flags %08x len %d data %d\n",
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321 | 2e5d83bb | pbrook | s->tag, cbw.flags, cbw.cmd_len, s->data_len); |
322 | a917d384 | pbrook | s->residue = 0;
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323 | d52affa7 | Gerd Hoffmann | s->scsi_dev->info->send_command(s->scsi_dev, s->tag, cbw.cmd, 0);
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324 | a917d384 | pbrook | /* ??? Should check that USB and SCSI data transfer
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325 | a917d384 | pbrook | directions match. */
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326 | a917d384 | pbrook | if (s->residue == 0) { |
327 | a917d384 | pbrook | if (s->mode == USB_MSDM_DATAIN) {
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328 | d52affa7 | Gerd Hoffmann | s->scsi_dev->info->read_data(s->scsi_dev, s->tag); |
329 | a917d384 | pbrook | } else if (s->mode == USB_MSDM_DATAOUT) { |
330 | d52affa7 | Gerd Hoffmann | s->scsi_dev->info->write_data(s->scsi_dev, s->tag); |
331 | a917d384 | pbrook | } |
332 | a917d384 | pbrook | } |
333 | 2e5d83bb | pbrook | ret = len; |
334 | 2e5d83bb | pbrook | break;
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335 | 2e5d83bb | pbrook | |
336 | 2e5d83bb | pbrook | case USB_MSDM_DATAOUT:
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337 | 2e5d83bb | pbrook | DPRINTF("Data out %d/%d\n", len, s->data_len);
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338 | 2e5d83bb | pbrook | if (len > s->data_len)
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339 | 2e5d83bb | pbrook | goto fail;
|
340 | 2e5d83bb | pbrook | |
341 | a917d384 | pbrook | s->usb_buf = data; |
342 | a917d384 | pbrook | s->usb_len = len; |
343 | a917d384 | pbrook | if (s->scsi_len) {
|
344 | a917d384 | pbrook | usb_msd_copy_data(s); |
345 | a917d384 | pbrook | } |
346 | a917d384 | pbrook | if (s->residue && s->usb_len) {
|
347 | a917d384 | pbrook | s->data_len -= s->usb_len; |
348 | a917d384 | pbrook | if (s->data_len == 0) |
349 | a917d384 | pbrook | s->mode = USB_MSDM_CSW; |
350 | a917d384 | pbrook | s->usb_len = 0;
|
351 | a917d384 | pbrook | } |
352 | a917d384 | pbrook | if (s->usb_len) {
|
353 | 4d611c9a | pbrook | DPRINTF("Deferring packet %p\n", p);
|
354 | 4d611c9a | pbrook | usb_defer_packet(p, usb_msd_cancel_io, s); |
355 | 4d611c9a | pbrook | s->packet = p; |
356 | 4d611c9a | pbrook | ret = USB_RET_ASYNC; |
357 | a917d384 | pbrook | } else {
|
358 | a917d384 | pbrook | ret = len; |
359 | 4d611c9a | pbrook | } |
360 | 2e5d83bb | pbrook | break;
|
361 | 2e5d83bb | pbrook | |
362 | 2e5d83bb | pbrook | default:
|
363 | 2e5d83bb | pbrook | DPRINTF("Unexpected write (len %d)\n", len);
|
364 | 2e5d83bb | pbrook | goto fail;
|
365 | 2e5d83bb | pbrook | } |
366 | 2e5d83bb | pbrook | break;
|
367 | 2e5d83bb | pbrook | |
368 | 2e5d83bb | pbrook | case USB_TOKEN_IN:
|
369 | 2e5d83bb | pbrook | if (devep != 1) |
370 | 2e5d83bb | pbrook | goto fail;
|
371 | 2e5d83bb | pbrook | |
372 | 2e5d83bb | pbrook | switch (s->mode) {
|
373 | a917d384 | pbrook | case USB_MSDM_DATAOUT:
|
374 | a917d384 | pbrook | if (s->data_len != 0 || len < 13) |
375 | a917d384 | pbrook | goto fail;
|
376 | a917d384 | pbrook | /* Waiting for SCSI write to complete. */
|
377 | a917d384 | pbrook | usb_defer_packet(p, usb_msd_cancel_io, s); |
378 | a917d384 | pbrook | s->packet = p; |
379 | a917d384 | pbrook | ret = USB_RET_ASYNC; |
380 | a917d384 | pbrook | break;
|
381 | a917d384 | pbrook | |
382 | 2e5d83bb | pbrook | case USB_MSDM_CSW:
|
383 | 2e5d83bb | pbrook | DPRINTF("Command status %d tag 0x%x, len %d\n",
|
384 | 2e5d83bb | pbrook | s->result, s->tag, len); |
385 | 2e5d83bb | pbrook | if (len < 13) |
386 | 2e5d83bb | pbrook | goto fail;
|
387 | 2e5d83bb | pbrook | |
388 | a917d384 | pbrook | s->usb_len = len; |
389 | a917d384 | pbrook | s->usb_buf = data; |
390 | a917d384 | pbrook | usb_msd_send_status(s); |
391 | 2e5d83bb | pbrook | s->mode = USB_MSDM_CBW; |
392 | a917d384 | pbrook | ret = 13;
|
393 | 2e5d83bb | pbrook | break;
|
394 | 2e5d83bb | pbrook | |
395 | 2e5d83bb | pbrook | case USB_MSDM_DATAIN:
|
396 | 2e5d83bb | pbrook | DPRINTF("Data in %d/%d\n", len, s->data_len);
|
397 | 2e5d83bb | pbrook | if (len > s->data_len)
|
398 | 2e5d83bb | pbrook | len = s->data_len; |
399 | a917d384 | pbrook | s->usb_buf = data; |
400 | a917d384 | pbrook | s->usb_len = len; |
401 | a917d384 | pbrook | if (s->scsi_len) {
|
402 | a917d384 | pbrook | usb_msd_copy_data(s); |
403 | a917d384 | pbrook | } |
404 | a917d384 | pbrook | if (s->residue && s->usb_len) {
|
405 | a917d384 | pbrook | s->data_len -= s->usb_len; |
406 | a917d384 | pbrook | memset(s->usb_buf, 0, s->usb_len);
|
407 | a917d384 | pbrook | if (s->data_len == 0) |
408 | a917d384 | pbrook | s->mode = USB_MSDM_CSW; |
409 | a917d384 | pbrook | s->usb_len = 0;
|
410 | a917d384 | pbrook | } |
411 | a917d384 | pbrook | if (s->usb_len) {
|
412 | 4d611c9a | pbrook | DPRINTF("Deferring packet %p\n", p);
|
413 | 4d611c9a | pbrook | usb_defer_packet(p, usb_msd_cancel_io, s); |
414 | 4d611c9a | pbrook | s->packet = p; |
415 | 4d611c9a | pbrook | ret = USB_RET_ASYNC; |
416 | a917d384 | pbrook | } else {
|
417 | a917d384 | pbrook | ret = len; |
418 | 4d611c9a | pbrook | } |
419 | 2e5d83bb | pbrook | break;
|
420 | 2e5d83bb | pbrook | |
421 | 2e5d83bb | pbrook | default:
|
422 | 2e5d83bb | pbrook | DPRINTF("Unexpected read (len %d)\n", len);
|
423 | 2e5d83bb | pbrook | goto fail;
|
424 | 2e5d83bb | pbrook | } |
425 | 2e5d83bb | pbrook | break;
|
426 | 2e5d83bb | pbrook | |
427 | 2e5d83bb | pbrook | default:
|
428 | 2e5d83bb | pbrook | DPRINTF("Bad token\n");
|
429 | 2e5d83bb | pbrook | fail:
|
430 | 2e5d83bb | pbrook | ret = USB_RET_STALL; |
431 | 2e5d83bb | pbrook | break;
|
432 | 2e5d83bb | pbrook | } |
433 | 2e5d83bb | pbrook | |
434 | 2e5d83bb | pbrook | return ret;
|
435 | 2e5d83bb | pbrook | } |
436 | 2e5d83bb | pbrook | |
437 | b3e461d3 | Gerd Hoffmann | static void usb_msd_password_cb(void *opaque, int err) |
438 | b3e461d3 | Gerd Hoffmann | { |
439 | b3e461d3 | Gerd Hoffmann | MSDState *s = opaque; |
440 | b3e461d3 | Gerd Hoffmann | |
441 | b3e461d3 | Gerd Hoffmann | if (!err)
|
442 | b3e461d3 | Gerd Hoffmann | usb_device_attach(&s->dev); |
443 | b3e461d3 | Gerd Hoffmann | else
|
444 | b3e461d3 | Gerd Hoffmann | qdev_unplug(&s->dev.qdev); |
445 | b3e461d3 | Gerd Hoffmann | } |
446 | b3e461d3 | Gerd Hoffmann | |
447 | 806b6024 | Gerd Hoffmann | static int usb_msd_initfn(USBDevice *dev) |
448 | 806b6024 | Gerd Hoffmann | { |
449 | 806b6024 | Gerd Hoffmann | MSDState *s = DO_UPCAST(MSDState, dev, dev); |
450 | f8b6cc00 | Markus Armbruster | BlockDriverState *bs = s->conf.bs; |
451 | 4a1e1bc4 | Gerd Hoffmann | DriveInfo *dinfo; |
452 | 806b6024 | Gerd Hoffmann | |
453 | f8b6cc00 | Markus Armbruster | if (!bs) {
|
454 | 1ecda02b | Markus Armbruster | error_report("usb-msd: drive property not set");
|
455 | 7fc2f2c0 | Gerd Hoffmann | return -1; |
456 | 7fc2f2c0 | Gerd Hoffmann | } |
457 | 7fc2f2c0 | Gerd Hoffmann | |
458 | 14bafc54 | Markus Armbruster | /*
|
459 | 14bafc54 | Markus Armbruster | * Hack alert: this pretends to be a block device, but it's really
|
460 | 14bafc54 | Markus Armbruster | * a SCSI bus that can serve only a single device, which it
|
461 | 18846dee | Markus Armbruster | * creates automatically. But first it needs to detach from its
|
462 | 18846dee | Markus Armbruster | * blockdev, or else scsi_bus_legacy_add_drive() dies when it
|
463 | 18846dee | Markus Armbruster | * attaches again.
|
464 | 14bafc54 | Markus Armbruster | *
|
465 | 14bafc54 | Markus Armbruster | * The hack is probably a bad idea.
|
466 | 14bafc54 | Markus Armbruster | */
|
467 | 18846dee | Markus Armbruster | bdrv_detach(bs, &s->dev.qdev); |
468 | f8b6cc00 | Markus Armbruster | s->conf.bs = NULL;
|
469 | 14bafc54 | Markus Armbruster | |
470 | 4a1e1bc4 | Gerd Hoffmann | dinfo = drive_get_by_blockdev(bs); |
471 | 4a1e1bc4 | Gerd Hoffmann | if (dinfo && dinfo->serial) {
|
472 | 4a1e1bc4 | Gerd Hoffmann | usb_desc_set_string(dev, STR_SERIALNUMBER, dinfo->serial); |
473 | 4a1e1bc4 | Gerd Hoffmann | } |
474 | 4a1e1bc4 | Gerd Hoffmann | |
475 | a980a065 | Gerd Hoffmann | usb_desc_init(dev); |
476 | ca9c39fa | Gerd Hoffmann | scsi_bus_new(&s->bus, &s->dev.qdev, 0, 1, usb_msd_command_complete); |
477 | f8b6cc00 | Markus Armbruster | s->scsi_dev = scsi_bus_legacy_add_drive(&s->bus, bs, 0);
|
478 | fa66b909 | Markus Armbruster | if (!s->scsi_dev) {
|
479 | fa66b909 | Markus Armbruster | return -1; |
480 | fa66b909 | Markus Armbruster | } |
481 | cb23117b | Gerd Hoffmann | s->bus.qbus.allow_hotplug = 0;
|
482 | 7fc2f2c0 | Gerd Hoffmann | usb_msd_handle_reset(dev); |
483 | b3e461d3 | Gerd Hoffmann | |
484 | f8b6cc00 | Markus Armbruster | if (bdrv_key_required(bs)) {
|
485 | a4426488 | Markus Armbruster | if (cur_mon) {
|
486 | f8b6cc00 | Markus Armbruster | monitor_read_bdrv_key_start(cur_mon, bs, usb_msd_password_cb, s); |
487 | b3e461d3 | Gerd Hoffmann | s->dev.auto_attach = 0;
|
488 | b3e461d3 | Gerd Hoffmann | } else {
|
489 | b3e461d3 | Gerd Hoffmann | autostart = 0;
|
490 | b3e461d3 | Gerd Hoffmann | } |
491 | b3e461d3 | Gerd Hoffmann | } |
492 | b3e461d3 | Gerd Hoffmann | |
493 | 806b6024 | Gerd Hoffmann | return 0; |
494 | 806b6024 | Gerd Hoffmann | } |
495 | 806b6024 | Gerd Hoffmann | |
496 | b3e461d3 | Gerd Hoffmann | static USBDevice *usb_msd_init(const char *filename) |
497 | 2e5d83bb | pbrook | { |
498 | 7fc2f2c0 | Gerd Hoffmann | static int nr=0; |
499 | 7fc2f2c0 | Gerd Hoffmann | char id[8]; |
500 | 7fc2f2c0 | Gerd Hoffmann | QemuOpts *opts; |
501 | 7fc2f2c0 | Gerd Hoffmann | DriveInfo *dinfo; |
502 | 806b6024 | Gerd Hoffmann | USBDevice *dev; |
503 | 7fc2f2c0 | Gerd Hoffmann | int fatal_error;
|
504 | 334c0241 | aurel32 | const char *p1; |
505 | 334c0241 | aurel32 | char fmt[32]; |
506 | 334c0241 | aurel32 | |
507 | 7fc2f2c0 | Gerd Hoffmann | /* parse -usbdevice disk: syntax into drive opts */
|
508 | 7fc2f2c0 | Gerd Hoffmann | snprintf(id, sizeof(id), "usb%d", nr++); |
509 | 3329f07b | Gerd Hoffmann | opts = qemu_opts_create(qemu_find_opts("drive"), id, 0); |
510 | 7fc2f2c0 | Gerd Hoffmann | |
511 | 334c0241 | aurel32 | p1 = strchr(filename, ':');
|
512 | 334c0241 | aurel32 | if (p1++) {
|
513 | 334c0241 | aurel32 | const char *p2; |
514 | 334c0241 | aurel32 | |
515 | 334c0241 | aurel32 | if (strstart(filename, "format=", &p2)) { |
516 | 334c0241 | aurel32 | int len = MIN(p1 - p2, sizeof(fmt)); |
517 | 334c0241 | aurel32 | pstrcpy(fmt, len, p2); |
518 | 7fc2f2c0 | Gerd Hoffmann | qemu_opt_set(opts, "format", fmt);
|
519 | 334c0241 | aurel32 | } else if (*filename != ':') { |
520 | 334c0241 | aurel32 | printf("unrecognized USB mass-storage option %s\n", filename);
|
521 | 334c0241 | aurel32 | return NULL; |
522 | 334c0241 | aurel32 | } |
523 | 334c0241 | aurel32 | filename = p1; |
524 | 334c0241 | aurel32 | } |
525 | 334c0241 | aurel32 | if (!*filename) {
|
526 | 334c0241 | aurel32 | printf("block device specification needed\n");
|
527 | 334c0241 | aurel32 | return NULL; |
528 | 334c0241 | aurel32 | } |
529 | 7fc2f2c0 | Gerd Hoffmann | qemu_opt_set(opts, "file", filename);
|
530 | 7fc2f2c0 | Gerd Hoffmann | qemu_opt_set(opts, "if", "none"); |
531 | 2e5d83bb | pbrook | |
532 | 7fc2f2c0 | Gerd Hoffmann | /* create host drive */
|
533 | a803cb8e | Markus Armbruster | dinfo = drive_init(opts, 0, &fatal_error);
|
534 | 7fc2f2c0 | Gerd Hoffmann | if (!dinfo) {
|
535 | 7fc2f2c0 | Gerd Hoffmann | qemu_opts_del(opts); |
536 | 806b6024 | Gerd Hoffmann | return NULL; |
537 | 7fc2f2c0 | Gerd Hoffmann | } |
538 | 2e5d83bb | pbrook | |
539 | 7fc2f2c0 | Gerd Hoffmann | /* create guest device */
|
540 | 556cd098 | Markus Armbruster | dev = usb_create(NULL /* FIXME */, "usb-storage"); |
541 | d44168ff | Paul Brook | if (!dev) {
|
542 | d44168ff | Paul Brook | return NULL; |
543 | d44168ff | Paul Brook | } |
544 | 18846dee | Markus Armbruster | if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) { |
545 | 18846dee | Markus Armbruster | qdev_free(&dev->qdev); |
546 | 18846dee | Markus Armbruster | return NULL; |
547 | 18846dee | Markus Armbruster | } |
548 | 33e66b86 | Markus Armbruster | if (qdev_init(&dev->qdev) < 0) |
549 | 33e66b86 | Markus Armbruster | return NULL; |
550 | 1f6e24e7 | bellard | |
551 | 7fc2f2c0 | Gerd Hoffmann | return dev;
|
552 | 2e5d83bb | pbrook | } |
553 | bb5fc20f | aliguori | |
554 | 806b6024 | Gerd Hoffmann | static struct USBDeviceInfo msd_info = { |
555 | 06384698 | Markus Armbruster | .product_desc = "QEMU USB MSD",
|
556 | 556cd098 | Markus Armbruster | .qdev.name = "usb-storage",
|
557 | 806b6024 | Gerd Hoffmann | .qdev.size = sizeof(MSDState),
|
558 | 81bfd2f2 | Gerd Hoffmann | .usb_desc = &desc, |
559 | 806b6024 | Gerd Hoffmann | .init = usb_msd_initfn, |
560 | 806b6024 | Gerd Hoffmann | .handle_packet = usb_generic_handle_packet, |
561 | 806b6024 | Gerd Hoffmann | .handle_reset = usb_msd_handle_reset, |
562 | 806b6024 | Gerd Hoffmann | .handle_control = usb_msd_handle_control, |
563 | 806b6024 | Gerd Hoffmann | .handle_data = usb_msd_handle_data, |
564 | b3e461d3 | Gerd Hoffmann | .usbdevice_name = "disk",
|
565 | b3e461d3 | Gerd Hoffmann | .usbdevice_init = usb_msd_init, |
566 | 7fc2f2c0 | Gerd Hoffmann | .qdev.props = (Property[]) { |
567 | 428c149b | Christoph Hellwig | DEFINE_BLOCK_PROPERTIES(MSDState, conf), |
568 | 7fc2f2c0 | Gerd Hoffmann | DEFINE_PROP_END_OF_LIST(), |
569 | 7fc2f2c0 | Gerd Hoffmann | }, |
570 | 806b6024 | Gerd Hoffmann | }; |
571 | 806b6024 | Gerd Hoffmann | |
572 | 806b6024 | Gerd Hoffmann | static void usb_msd_register_devices(void) |
573 | 806b6024 | Gerd Hoffmann | { |
574 | 806b6024 | Gerd Hoffmann | usb_qdev_register(&msd_info); |
575 | 806b6024 | Gerd Hoffmann | } |
576 | 806b6024 | Gerd Hoffmann | device_init(usb_msd_register_devices) |