root / hw / usb-msd.c @ eb5e680a
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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 | 94843f66 | Brad Hards | USB_MSDM_DATAOUT, /* Transfer 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 | 6bb7b867 | Stefan Hajnoczi | uint32_t removable; |
55 | 2e5d83bb | pbrook | int result;
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56 | 4d611c9a | pbrook | /* For async completion. */
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57 | 4d611c9a | pbrook | USBPacket *packet; |
58 | 2e5d83bb | pbrook | } MSDState; |
59 | 2e5d83bb | pbrook | |
60 | a917d384 | pbrook | struct usb_msd_cbw {
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61 | a917d384 | pbrook | uint32_t sig; |
62 | a917d384 | pbrook | uint32_t tag; |
63 | a917d384 | pbrook | uint32_t data_len; |
64 | a917d384 | pbrook | uint8_t flags; |
65 | a917d384 | pbrook | uint8_t lun; |
66 | a917d384 | pbrook | uint8_t cmd_len; |
67 | a917d384 | pbrook | uint8_t cmd[16];
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68 | a917d384 | pbrook | }; |
69 | a917d384 | pbrook | |
70 | a917d384 | pbrook | struct usb_msd_csw {
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71 | a917d384 | pbrook | uint32_t sig; |
72 | a917d384 | pbrook | uint32_t tag; |
73 | a917d384 | pbrook | uint32_t residue; |
74 | a917d384 | pbrook | uint8_t status; |
75 | a917d384 | pbrook | }; |
76 | a917d384 | pbrook | |
77 | 81bfd2f2 | Gerd Hoffmann | enum {
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78 | 81bfd2f2 | Gerd Hoffmann | STR_MANUFACTURER = 1,
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79 | 81bfd2f2 | Gerd Hoffmann | STR_PRODUCT, |
80 | 81bfd2f2 | Gerd Hoffmann | STR_SERIALNUMBER, |
81 | ca0c730d | Gerd Hoffmann | STR_CONFIG_FULL, |
82 | ca0c730d | Gerd Hoffmann | STR_CONFIG_HIGH, |
83 | 2e5d83bb | pbrook | }; |
84 | 2e5d83bb | pbrook | |
85 | 81bfd2f2 | Gerd Hoffmann | static const USBDescStrings desc_strings = { |
86 | 81bfd2f2 | Gerd Hoffmann | [STR_MANUFACTURER] = "QEMU " QEMU_VERSION,
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87 | 81bfd2f2 | Gerd Hoffmann | [STR_PRODUCT] = "QEMU USB HARDDRIVE",
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88 | 81bfd2f2 | Gerd Hoffmann | [STR_SERIALNUMBER] = "1",
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89 | ca0c730d | Gerd Hoffmann | [STR_CONFIG_FULL] = "Full speed config (usb 1.1)",
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90 | ca0c730d | Gerd Hoffmann | [STR_CONFIG_HIGH] = "High speed config (usb 2.0)",
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91 | 81bfd2f2 | Gerd Hoffmann | }; |
92 | 81bfd2f2 | Gerd Hoffmann | |
93 | ca0c730d | Gerd Hoffmann | static const USBDescIface desc_iface_full = { |
94 | 81bfd2f2 | Gerd Hoffmann | .bInterfaceNumber = 0,
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95 | 81bfd2f2 | Gerd Hoffmann | .bNumEndpoints = 2,
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96 | 81bfd2f2 | Gerd Hoffmann | .bInterfaceClass = USB_CLASS_MASS_STORAGE, |
97 | 81bfd2f2 | Gerd Hoffmann | .bInterfaceSubClass = 0x06, /* SCSI */ |
98 | 81bfd2f2 | Gerd Hoffmann | .bInterfaceProtocol = 0x50, /* Bulk */ |
99 | 81bfd2f2 | Gerd Hoffmann | .eps = (USBDescEndpoint[]) { |
100 | 81bfd2f2 | Gerd Hoffmann | { |
101 | 81bfd2f2 | Gerd Hoffmann | .bEndpointAddress = USB_DIR_IN | 0x01,
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102 | 81bfd2f2 | Gerd Hoffmann | .bmAttributes = USB_ENDPOINT_XFER_BULK, |
103 | 81bfd2f2 | Gerd Hoffmann | .wMaxPacketSize = 64,
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104 | 81bfd2f2 | Gerd Hoffmann | },{ |
105 | 81bfd2f2 | Gerd Hoffmann | .bEndpointAddress = USB_DIR_OUT | 0x02,
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106 | 81bfd2f2 | Gerd Hoffmann | .bmAttributes = USB_ENDPOINT_XFER_BULK, |
107 | 81bfd2f2 | Gerd Hoffmann | .wMaxPacketSize = 64,
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108 | 81bfd2f2 | Gerd Hoffmann | }, |
109 | 81bfd2f2 | Gerd Hoffmann | } |
110 | 81bfd2f2 | Gerd Hoffmann | }; |
111 | 81bfd2f2 | Gerd Hoffmann | |
112 | ca0c730d | Gerd Hoffmann | static const USBDescDevice desc_device_full = { |
113 | ca0c730d | Gerd Hoffmann | .bcdUSB = 0x0200,
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114 | 81bfd2f2 | Gerd Hoffmann | .bMaxPacketSize0 = 8,
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115 | 81bfd2f2 | Gerd Hoffmann | .bNumConfigurations = 1,
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116 | 81bfd2f2 | Gerd Hoffmann | .confs = (USBDescConfig[]) { |
117 | 81bfd2f2 | Gerd Hoffmann | { |
118 | 81bfd2f2 | Gerd Hoffmann | .bNumInterfaces = 1,
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119 | 81bfd2f2 | Gerd Hoffmann | .bConfigurationValue = 1,
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120 | ca0c730d | Gerd Hoffmann | .iConfiguration = STR_CONFIG_FULL, |
121 | 81bfd2f2 | Gerd Hoffmann | .bmAttributes = 0xc0,
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122 | add75088 | Brad Hards | .nif = 1,
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123 | ca0c730d | Gerd Hoffmann | .ifs = &desc_iface_full, |
124 | ca0c730d | Gerd Hoffmann | }, |
125 | ca0c730d | Gerd Hoffmann | }, |
126 | ca0c730d | Gerd Hoffmann | }; |
127 | ca0c730d | Gerd Hoffmann | |
128 | ca0c730d | Gerd Hoffmann | static const USBDescIface desc_iface_high = { |
129 | ca0c730d | Gerd Hoffmann | .bInterfaceNumber = 0,
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130 | ca0c730d | Gerd Hoffmann | .bNumEndpoints = 2,
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131 | ca0c730d | Gerd Hoffmann | .bInterfaceClass = USB_CLASS_MASS_STORAGE, |
132 | ca0c730d | Gerd Hoffmann | .bInterfaceSubClass = 0x06, /* SCSI */ |
133 | ca0c730d | Gerd Hoffmann | .bInterfaceProtocol = 0x50, /* Bulk */ |
134 | ca0c730d | Gerd Hoffmann | .eps = (USBDescEndpoint[]) { |
135 | ca0c730d | Gerd Hoffmann | { |
136 | ca0c730d | Gerd Hoffmann | .bEndpointAddress = USB_DIR_IN | 0x01,
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137 | ca0c730d | Gerd Hoffmann | .bmAttributes = USB_ENDPOINT_XFER_BULK, |
138 | ca0c730d | Gerd Hoffmann | .wMaxPacketSize = 512,
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139 | ca0c730d | Gerd Hoffmann | },{ |
140 | ca0c730d | Gerd Hoffmann | .bEndpointAddress = USB_DIR_OUT | 0x02,
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141 | ca0c730d | Gerd Hoffmann | .bmAttributes = USB_ENDPOINT_XFER_BULK, |
142 | ca0c730d | Gerd Hoffmann | .wMaxPacketSize = 512,
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143 | ca0c730d | Gerd Hoffmann | }, |
144 | ca0c730d | Gerd Hoffmann | } |
145 | ca0c730d | Gerd Hoffmann | }; |
146 | ca0c730d | Gerd Hoffmann | |
147 | ca0c730d | Gerd Hoffmann | static const USBDescDevice desc_device_high = { |
148 | ca0c730d | Gerd Hoffmann | .bcdUSB = 0x0200,
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149 | ca0c730d | Gerd Hoffmann | .bMaxPacketSize0 = 64,
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150 | ca0c730d | Gerd Hoffmann | .bNumConfigurations = 1,
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151 | ca0c730d | Gerd Hoffmann | .confs = (USBDescConfig[]) { |
152 | ca0c730d | Gerd Hoffmann | { |
153 | ca0c730d | Gerd Hoffmann | .bNumInterfaces = 1,
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154 | ca0c730d | Gerd Hoffmann | .bConfigurationValue = 1,
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155 | ca0c730d | Gerd Hoffmann | .iConfiguration = STR_CONFIG_HIGH, |
156 | ca0c730d | Gerd Hoffmann | .bmAttributes = 0xc0,
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157 | add75088 | Brad Hards | .nif = 1,
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158 | ca0c730d | Gerd Hoffmann | .ifs = &desc_iface_high, |
159 | 81bfd2f2 | Gerd Hoffmann | }, |
160 | 81bfd2f2 | Gerd Hoffmann | }, |
161 | 81bfd2f2 | Gerd Hoffmann | }; |
162 | 81bfd2f2 | Gerd Hoffmann | |
163 | 81bfd2f2 | Gerd Hoffmann | static const USBDesc desc = { |
164 | 81bfd2f2 | Gerd Hoffmann | .id = { |
165 | 81bfd2f2 | Gerd Hoffmann | .idVendor = 0,
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166 | 81bfd2f2 | Gerd Hoffmann | .idProduct = 0,
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167 | 81bfd2f2 | Gerd Hoffmann | .bcdDevice = 0,
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168 | 81bfd2f2 | Gerd Hoffmann | .iManufacturer = STR_MANUFACTURER, |
169 | 81bfd2f2 | Gerd Hoffmann | .iProduct = STR_PRODUCT, |
170 | 81bfd2f2 | Gerd Hoffmann | .iSerialNumber = STR_SERIALNUMBER, |
171 | 81bfd2f2 | Gerd Hoffmann | }, |
172 | ca0c730d | Gerd Hoffmann | .full = &desc_device_full, |
173 | ca0c730d | Gerd Hoffmann | .high = &desc_device_high, |
174 | 81bfd2f2 | Gerd Hoffmann | .str = desc_strings, |
175 | 2e5d83bb | pbrook | }; |
176 | 2e5d83bb | pbrook | |
177 | a917d384 | pbrook | static void usb_msd_copy_data(MSDState *s) |
178 | a917d384 | pbrook | { |
179 | a917d384 | pbrook | uint32_t len; |
180 | a917d384 | pbrook | len = s->usb_len; |
181 | a917d384 | pbrook | if (len > s->scsi_len)
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182 | a917d384 | pbrook | len = s->scsi_len; |
183 | a917d384 | pbrook | if (s->mode == USB_MSDM_DATAIN) {
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184 | a917d384 | pbrook | memcpy(s->usb_buf, s->scsi_buf, len); |
185 | a917d384 | pbrook | } else {
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186 | a917d384 | pbrook | memcpy(s->scsi_buf, s->usb_buf, len); |
187 | a917d384 | pbrook | } |
188 | a917d384 | pbrook | s->usb_len -= len; |
189 | a917d384 | pbrook | s->scsi_len -= len; |
190 | a917d384 | pbrook | s->usb_buf += len; |
191 | a917d384 | pbrook | s->scsi_buf += len; |
192 | a917d384 | pbrook | s->data_len -= len; |
193 | fa7935c1 | Gerd Hoffmann | if (s->scsi_len == 0 || s->data_len == 0) { |
194 | a917d384 | pbrook | if (s->mode == USB_MSDM_DATAIN) {
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195 | d52affa7 | Gerd Hoffmann | s->scsi_dev->info->read_data(s->scsi_dev, s->tag); |
196 | a917d384 | pbrook | } else if (s->mode == USB_MSDM_DATAOUT) { |
197 | d52affa7 | Gerd Hoffmann | s->scsi_dev->info->write_data(s->scsi_dev, s->tag); |
198 | a917d384 | pbrook | } |
199 | a917d384 | pbrook | } |
200 | a917d384 | pbrook | } |
201 | a917d384 | pbrook | |
202 | ab4797ad | Gerd Hoffmann | static void usb_msd_send_status(MSDState *s, USBPacket *p) |
203 | a917d384 | pbrook | { |
204 | a917d384 | pbrook | struct usb_msd_csw csw;
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205 | ab4797ad | Gerd Hoffmann | int len;
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206 | a917d384 | pbrook | |
207 | a917d384 | pbrook | csw.sig = cpu_to_le32(0x53425355);
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208 | a917d384 | pbrook | csw.tag = cpu_to_le32(s->tag); |
209 | a917d384 | pbrook | csw.residue = s->residue; |
210 | a917d384 | pbrook | csw.status = s->result; |
211 | ab4797ad | Gerd Hoffmann | |
212 | ab4797ad | Gerd Hoffmann | len = MIN(sizeof(csw), p->len);
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213 | ab4797ad | Gerd Hoffmann | memcpy(p->data, &csw, len); |
214 | a917d384 | pbrook | } |
215 | a917d384 | pbrook | |
216 | d52affa7 | Gerd Hoffmann | static void usb_msd_command_complete(SCSIBus *bus, int reason, uint32_t tag, |
217 | a917d384 | pbrook | uint32_t arg) |
218 | 2e5d83bb | pbrook | { |
219 | d52affa7 | Gerd Hoffmann | MSDState *s = DO_UPCAST(MSDState, dev.qdev, bus->qbus.parent); |
220 | a917d384 | pbrook | USBPacket *p = s->packet; |
221 | 4d611c9a | pbrook | |
222 | a917d384 | pbrook | if (tag != s->tag) {
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223 | a917d384 | pbrook | fprintf(stderr, "usb-msd: Unexpected SCSI Tag 0x%x\n", tag);
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224 | a917d384 | pbrook | } |
225 | 4d611c9a | pbrook | if (reason == SCSI_REASON_DONE) {
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226 | a917d384 | pbrook | DPRINTF("Command complete %d\n", arg);
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227 | a917d384 | pbrook | s->residue = s->data_len; |
228 | a917d384 | pbrook | s->result = arg != 0;
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229 | a917d384 | pbrook | if (s->packet) {
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230 | a917d384 | pbrook | if (s->data_len == 0 && s->mode == USB_MSDM_DATAOUT) { |
231 | a917d384 | pbrook | /* A deferred packet with no write data remaining must be
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232 | a917d384 | pbrook | the status read packet. */
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233 | ab4797ad | Gerd Hoffmann | usb_msd_send_status(s, p); |
234 | a917d384 | pbrook | s->mode = USB_MSDM_CBW; |
235 | a917d384 | pbrook | } else {
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236 | a917d384 | pbrook | if (s->data_len) {
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237 | a917d384 | pbrook | s->data_len -= s->usb_len; |
238 | a917d384 | pbrook | if (s->mode == USB_MSDM_DATAIN)
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239 | a917d384 | pbrook | memset(s->usb_buf, 0, s->usb_len);
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240 | a917d384 | pbrook | s->usb_len = 0;
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241 | a917d384 | pbrook | } |
242 | a917d384 | pbrook | if (s->data_len == 0) |
243 | a917d384 | pbrook | s->mode = USB_MSDM_CSW; |
244 | a917d384 | pbrook | } |
245 | a917d384 | pbrook | s->packet = NULL;
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246 | 13a9a0d3 | Gerd Hoffmann | usb_packet_complete(&s->dev, p); |
247 | a917d384 | pbrook | } else if (s->data_len == 0) { |
248 | a917d384 | pbrook | s->mode = USB_MSDM_CSW; |
249 | a917d384 | pbrook | } |
250 | a917d384 | pbrook | return;
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251 | 4d611c9a | pbrook | } |
252 | a917d384 | pbrook | s->scsi_len = arg; |
253 | d52affa7 | Gerd Hoffmann | s->scsi_buf = s->scsi_dev->info->get_buf(s->scsi_dev, tag); |
254 | a917d384 | pbrook | if (p) {
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255 | a917d384 | pbrook | usb_msd_copy_data(s); |
256 | ebd669a1 | Gerd Hoffmann | if (s->packet && s->usb_len == 0) { |
257 | a917d384 | pbrook | /* Set s->packet to NULL before calling usb_packet_complete
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258 | 94843f66 | Brad Hards | because another request may be issued before
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259 | a917d384 | pbrook | usb_packet_complete returns. */
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260 | a917d384 | pbrook | DPRINTF("Packet complete %p\n", p);
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261 | a917d384 | pbrook | s->packet = NULL;
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262 | 13a9a0d3 | Gerd Hoffmann | usb_packet_complete(&s->dev, p); |
263 | a917d384 | pbrook | } |
264 | 4d611c9a | pbrook | } |
265 | 2e5d83bb | pbrook | } |
266 | 2e5d83bb | pbrook | |
267 | 059809e4 | bellard | static void usb_msd_handle_reset(USBDevice *dev) |
268 | 2e5d83bb | pbrook | { |
269 | 2e5d83bb | pbrook | MSDState *s = (MSDState *)dev; |
270 | 2e5d83bb | pbrook | |
271 | 2e5d83bb | pbrook | DPRINTF("Reset\n");
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272 | 2e5d83bb | pbrook | s->mode = USB_MSDM_CBW; |
273 | 2e5d83bb | pbrook | } |
274 | 2e5d83bb | pbrook | |
275 | 007fd62f | Hans de Goede | static int usb_msd_handle_control(USBDevice *dev, USBPacket *p, |
276 | 007fd62f | Hans de Goede | int request, int value, int index, int length, uint8_t *data) |
277 | 2e5d83bb | pbrook | { |
278 | 2e5d83bb | pbrook | MSDState *s = (MSDState *)dev; |
279 | 81bfd2f2 | Gerd Hoffmann | int ret;
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280 | 2e5d83bb | pbrook | |
281 | 007fd62f | Hans de Goede | ret = usb_desc_handle_control(dev, p, request, value, index, length, data); |
282 | 81bfd2f2 | Gerd Hoffmann | if (ret >= 0) { |
283 | 81bfd2f2 | Gerd Hoffmann | return ret;
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284 | 81bfd2f2 | Gerd Hoffmann | } |
285 | 81bfd2f2 | Gerd Hoffmann | |
286 | 81bfd2f2 | Gerd Hoffmann | ret = 0;
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287 | 2e5d83bb | pbrook | switch (request) {
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288 | 2e5d83bb | pbrook | case DeviceRequest | USB_REQ_GET_INTERFACE:
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289 | 2e5d83bb | pbrook | data[0] = 0; |
290 | 2e5d83bb | pbrook | ret = 1;
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291 | 2e5d83bb | pbrook | break;
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292 | 2e5d83bb | pbrook | case DeviceOutRequest | USB_REQ_SET_INTERFACE:
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293 | 2e5d83bb | pbrook | ret = 0;
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294 | 2e5d83bb | pbrook | break;
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295 | 2e5d83bb | pbrook | case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
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296 | e5322f76 | Arnaud Patard (Rtp) | ret = 0;
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297 | e5322f76 | Arnaud Patard (Rtp) | break;
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298 | e5322f76 | Arnaud Patard (Rtp) | case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
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299 | 2e5d83bb | pbrook | ret = 0;
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300 | 2e5d83bb | pbrook | break;
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301 | 2e5d83bb | pbrook | /* Class specific requests. */
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302 | f3571b1a | Max Reitz | case ClassInterfaceOutRequest | MassStorageReset:
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303 | 2e5d83bb | pbrook | /* Reset state ready for the next CBW. */
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304 | 2e5d83bb | pbrook | s->mode = USB_MSDM_CBW; |
305 | 2e5d83bb | pbrook | ret = 0;
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306 | 2e5d83bb | pbrook | break;
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307 | f3571b1a | Max Reitz | case ClassInterfaceRequest | GetMaxLun:
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308 | 2e5d83bb | pbrook | data[0] = 0; |
309 | 2e5d83bb | pbrook | ret = 1;
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310 | 2e5d83bb | pbrook | break;
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311 | 2e5d83bb | pbrook | default:
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312 | 2e5d83bb | pbrook | ret = USB_RET_STALL; |
313 | 2e5d83bb | pbrook | break;
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314 | 2e5d83bb | pbrook | } |
315 | 2e5d83bb | pbrook | return ret;
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316 | 2e5d83bb | pbrook | } |
317 | 2e5d83bb | pbrook | |
318 | eb5e680a | Gerd Hoffmann | static void usb_msd_cancel_io(USBDevice *dev, USBPacket *p) |
319 | 4d611c9a | pbrook | { |
320 | eb5e680a | Gerd Hoffmann | MSDState *s = DO_UPCAST(MSDState, dev, dev); |
321 | d52affa7 | Gerd Hoffmann | s->scsi_dev->info->cancel_io(s->scsi_dev, s->tag); |
322 | 4d611c9a | pbrook | s->packet = NULL;
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323 | a917d384 | pbrook | s->scsi_len = 0;
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324 | 4d611c9a | pbrook | } |
325 | 4d611c9a | pbrook | |
326 | 4d611c9a | pbrook | static int usb_msd_handle_data(USBDevice *dev, USBPacket *p) |
327 | 2e5d83bb | pbrook | { |
328 | 2e5d83bb | pbrook | MSDState *s = (MSDState *)dev; |
329 | 2e5d83bb | pbrook | int ret = 0; |
330 | 2e5d83bb | pbrook | struct usb_msd_cbw cbw;
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331 | 4d611c9a | pbrook | uint8_t devep = p->devep; |
332 | 4d611c9a | pbrook | uint8_t *data = p->data; |
333 | 4d611c9a | pbrook | int len = p->len;
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334 | 2e5d83bb | pbrook | |
335 | 4d611c9a | pbrook | switch (p->pid) {
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336 | 2e5d83bb | pbrook | case USB_TOKEN_OUT:
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337 | 2e5d83bb | pbrook | if (devep != 2) |
338 | 2e5d83bb | pbrook | goto fail;
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339 | 2e5d83bb | pbrook | |
340 | 2e5d83bb | pbrook | switch (s->mode) {
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341 | 2e5d83bb | pbrook | case USB_MSDM_CBW:
|
342 | 2e5d83bb | pbrook | if (len != 31) { |
343 | 2e5d83bb | pbrook | fprintf(stderr, "usb-msd: Bad CBW size");
|
344 | 2e5d83bb | pbrook | goto fail;
|
345 | 2e5d83bb | pbrook | } |
346 | 2e5d83bb | pbrook | memcpy(&cbw, data, 31);
|
347 | 2e5d83bb | pbrook | if (le32_to_cpu(cbw.sig) != 0x43425355) { |
348 | 2e5d83bb | pbrook | fprintf(stderr, "usb-msd: Bad signature %08x\n",
|
349 | 2e5d83bb | pbrook | le32_to_cpu(cbw.sig)); |
350 | 2e5d83bb | pbrook | goto fail;
|
351 | 2e5d83bb | pbrook | } |
352 | 2e5d83bb | pbrook | DPRINTF("Command on LUN %d\n", cbw.lun);
|
353 | 2e5d83bb | pbrook | if (cbw.lun != 0) { |
354 | 2e5d83bb | pbrook | fprintf(stderr, "usb-msd: Bad LUN %d\n", cbw.lun);
|
355 | 2e5d83bb | pbrook | goto fail;
|
356 | 2e5d83bb | pbrook | } |
357 | 2e5d83bb | pbrook | s->tag = le32_to_cpu(cbw.tag); |
358 | 2e5d83bb | pbrook | s->data_len = le32_to_cpu(cbw.data_len); |
359 | 2e5d83bb | pbrook | if (s->data_len == 0) { |
360 | 2e5d83bb | pbrook | s->mode = USB_MSDM_CSW; |
361 | 2e5d83bb | pbrook | } else if (cbw.flags & 0x80) { |
362 | 2e5d83bb | pbrook | s->mode = USB_MSDM_DATAIN; |
363 | 2e5d83bb | pbrook | } else {
|
364 | 2e5d83bb | pbrook | s->mode = USB_MSDM_DATAOUT; |
365 | 2e5d83bb | pbrook | } |
366 | 2e5d83bb | pbrook | DPRINTF("Command tag 0x%x flags %08x len %d data %d\n",
|
367 | 2e5d83bb | pbrook | s->tag, cbw.flags, cbw.cmd_len, s->data_len); |
368 | a917d384 | pbrook | s->residue = 0;
|
369 | ef0bdf77 | Gerd Hoffmann | s->scsi_len = 0;
|
370 | d52affa7 | Gerd Hoffmann | s->scsi_dev->info->send_command(s->scsi_dev, s->tag, cbw.cmd, 0);
|
371 | a917d384 | pbrook | /* ??? Should check that USB and SCSI data transfer
|
372 | a917d384 | pbrook | directions match. */
|
373 | a917d384 | pbrook | if (s->residue == 0) { |
374 | a917d384 | pbrook | if (s->mode == USB_MSDM_DATAIN) {
|
375 | d52affa7 | Gerd Hoffmann | s->scsi_dev->info->read_data(s->scsi_dev, s->tag); |
376 | a917d384 | pbrook | } else if (s->mode == USB_MSDM_DATAOUT) { |
377 | d52affa7 | Gerd Hoffmann | s->scsi_dev->info->write_data(s->scsi_dev, s->tag); |
378 | a917d384 | pbrook | } |
379 | a917d384 | pbrook | } |
380 | 2e5d83bb | pbrook | ret = len; |
381 | 2e5d83bb | pbrook | break;
|
382 | 2e5d83bb | pbrook | |
383 | 2e5d83bb | pbrook | case USB_MSDM_DATAOUT:
|
384 | 2e5d83bb | pbrook | DPRINTF("Data out %d/%d\n", len, s->data_len);
|
385 | 2e5d83bb | pbrook | if (len > s->data_len)
|
386 | 2e5d83bb | pbrook | goto fail;
|
387 | 2e5d83bb | pbrook | |
388 | a917d384 | pbrook | s->usb_buf = data; |
389 | a917d384 | pbrook | s->usb_len = len; |
390 | a917d384 | pbrook | if (s->scsi_len) {
|
391 | a917d384 | pbrook | usb_msd_copy_data(s); |
392 | a917d384 | pbrook | } |
393 | a917d384 | pbrook | if (s->residue && s->usb_len) {
|
394 | a917d384 | pbrook | s->data_len -= s->usb_len; |
395 | a917d384 | pbrook | if (s->data_len == 0) |
396 | a917d384 | pbrook | s->mode = USB_MSDM_CSW; |
397 | a917d384 | pbrook | s->usb_len = 0;
|
398 | a917d384 | pbrook | } |
399 | a917d384 | pbrook | if (s->usb_len) {
|
400 | 4d611c9a | pbrook | DPRINTF("Deferring packet %p\n", p);
|
401 | 4d611c9a | pbrook | s->packet = p; |
402 | 4d611c9a | pbrook | ret = USB_RET_ASYNC; |
403 | a917d384 | pbrook | } else {
|
404 | a917d384 | pbrook | ret = len; |
405 | 4d611c9a | pbrook | } |
406 | 2e5d83bb | pbrook | break;
|
407 | 2e5d83bb | pbrook | |
408 | 2e5d83bb | pbrook | default:
|
409 | 2e5d83bb | pbrook | DPRINTF("Unexpected write (len %d)\n", len);
|
410 | 2e5d83bb | pbrook | goto fail;
|
411 | 2e5d83bb | pbrook | } |
412 | 2e5d83bb | pbrook | break;
|
413 | 2e5d83bb | pbrook | |
414 | 2e5d83bb | pbrook | case USB_TOKEN_IN:
|
415 | 2e5d83bb | pbrook | if (devep != 1) |
416 | 2e5d83bb | pbrook | goto fail;
|
417 | 2e5d83bb | pbrook | |
418 | 2e5d83bb | pbrook | switch (s->mode) {
|
419 | a917d384 | pbrook | case USB_MSDM_DATAOUT:
|
420 | a917d384 | pbrook | if (s->data_len != 0 || len < 13) |
421 | a917d384 | pbrook | goto fail;
|
422 | a917d384 | pbrook | /* Waiting for SCSI write to complete. */
|
423 | a917d384 | pbrook | s->packet = p; |
424 | a917d384 | pbrook | ret = USB_RET_ASYNC; |
425 | a917d384 | pbrook | break;
|
426 | a917d384 | pbrook | |
427 | 2e5d83bb | pbrook | case USB_MSDM_CSW:
|
428 | 2e5d83bb | pbrook | DPRINTF("Command status %d tag 0x%x, len %d\n",
|
429 | 2e5d83bb | pbrook | s->result, s->tag, len); |
430 | 2e5d83bb | pbrook | if (len < 13) |
431 | 2e5d83bb | pbrook | goto fail;
|
432 | 2e5d83bb | pbrook | |
433 | ab4797ad | Gerd Hoffmann | usb_msd_send_status(s, p); |
434 | 2e5d83bb | pbrook | s->mode = USB_MSDM_CBW; |
435 | a917d384 | pbrook | ret = 13;
|
436 | 2e5d83bb | pbrook | break;
|
437 | 2e5d83bb | pbrook | |
438 | 2e5d83bb | pbrook | case USB_MSDM_DATAIN:
|
439 | fa7935c1 | Gerd Hoffmann | DPRINTF("Data in %d/%d, scsi_len %d\n", len, s->data_len, s->scsi_len);
|
440 | 2e5d83bb | pbrook | if (len > s->data_len)
|
441 | 2e5d83bb | pbrook | len = s->data_len; |
442 | a917d384 | pbrook | s->usb_buf = data; |
443 | a917d384 | pbrook | s->usb_len = len; |
444 | a917d384 | pbrook | if (s->scsi_len) {
|
445 | a917d384 | pbrook | usb_msd_copy_data(s); |
446 | a917d384 | pbrook | } |
447 | a917d384 | pbrook | if (s->residue && s->usb_len) {
|
448 | a917d384 | pbrook | s->data_len -= s->usb_len; |
449 | a917d384 | pbrook | memset(s->usb_buf, 0, s->usb_len);
|
450 | a917d384 | pbrook | if (s->data_len == 0) |
451 | a917d384 | pbrook | s->mode = USB_MSDM_CSW; |
452 | a917d384 | pbrook | s->usb_len = 0;
|
453 | a917d384 | pbrook | } |
454 | a917d384 | pbrook | if (s->usb_len) {
|
455 | 4d611c9a | pbrook | DPRINTF("Deferring packet %p\n", p);
|
456 | 4d611c9a | pbrook | s->packet = p; |
457 | 4d611c9a | pbrook | ret = USB_RET_ASYNC; |
458 | a917d384 | pbrook | } else {
|
459 | a917d384 | pbrook | ret = len; |
460 | 4d611c9a | pbrook | } |
461 | 2e5d83bb | pbrook | break;
|
462 | 2e5d83bb | pbrook | |
463 | 2e5d83bb | pbrook | default:
|
464 | 2e5d83bb | pbrook | DPRINTF("Unexpected read (len %d)\n", len);
|
465 | 2e5d83bb | pbrook | goto fail;
|
466 | 2e5d83bb | pbrook | } |
467 | 2e5d83bb | pbrook | break;
|
468 | 2e5d83bb | pbrook | |
469 | 2e5d83bb | pbrook | default:
|
470 | 2e5d83bb | pbrook | DPRINTF("Bad token\n");
|
471 | 2e5d83bb | pbrook | fail:
|
472 | 2e5d83bb | pbrook | ret = USB_RET_STALL; |
473 | 2e5d83bb | pbrook | break;
|
474 | 2e5d83bb | pbrook | } |
475 | 2e5d83bb | pbrook | |
476 | 2e5d83bb | pbrook | return ret;
|
477 | 2e5d83bb | pbrook | } |
478 | 2e5d83bb | pbrook | |
479 | b3e461d3 | Gerd Hoffmann | static void usb_msd_password_cb(void *opaque, int err) |
480 | b3e461d3 | Gerd Hoffmann | { |
481 | b3e461d3 | Gerd Hoffmann | MSDState *s = opaque; |
482 | b3e461d3 | Gerd Hoffmann | |
483 | b3e461d3 | Gerd Hoffmann | if (!err)
|
484 | b3e461d3 | Gerd Hoffmann | usb_device_attach(&s->dev); |
485 | b3e461d3 | Gerd Hoffmann | else
|
486 | b3e461d3 | Gerd Hoffmann | qdev_unplug(&s->dev.qdev); |
487 | b3e461d3 | Gerd Hoffmann | } |
488 | b3e461d3 | Gerd Hoffmann | |
489 | 806b6024 | Gerd Hoffmann | static int usb_msd_initfn(USBDevice *dev) |
490 | 806b6024 | Gerd Hoffmann | { |
491 | 806b6024 | Gerd Hoffmann | MSDState *s = DO_UPCAST(MSDState, dev, dev); |
492 | f8b6cc00 | Markus Armbruster | BlockDriverState *bs = s->conf.bs; |
493 | 4a1e1bc4 | Gerd Hoffmann | DriveInfo *dinfo; |
494 | 806b6024 | Gerd Hoffmann | |
495 | f8b6cc00 | Markus Armbruster | if (!bs) {
|
496 | 1ecda02b | Markus Armbruster | error_report("usb-msd: drive property not set");
|
497 | 7fc2f2c0 | Gerd Hoffmann | return -1; |
498 | 7fc2f2c0 | Gerd Hoffmann | } |
499 | 7fc2f2c0 | Gerd Hoffmann | |
500 | 14bafc54 | Markus Armbruster | /*
|
501 | 14bafc54 | Markus Armbruster | * Hack alert: this pretends to be a block device, but it's really
|
502 | 14bafc54 | Markus Armbruster | * a SCSI bus that can serve only a single device, which it
|
503 | 18846dee | Markus Armbruster | * creates automatically. But first it needs to detach from its
|
504 | 18846dee | Markus Armbruster | * blockdev, or else scsi_bus_legacy_add_drive() dies when it
|
505 | 18846dee | Markus Armbruster | * attaches again.
|
506 | 14bafc54 | Markus Armbruster | *
|
507 | 14bafc54 | Markus Armbruster | * The hack is probably a bad idea.
|
508 | 14bafc54 | Markus Armbruster | */
|
509 | 18846dee | Markus Armbruster | bdrv_detach(bs, &s->dev.qdev); |
510 | f8b6cc00 | Markus Armbruster | s->conf.bs = NULL;
|
511 | 14bafc54 | Markus Armbruster | |
512 | 4a1e1bc4 | Gerd Hoffmann | dinfo = drive_get_by_blockdev(bs); |
513 | 4a1e1bc4 | Gerd Hoffmann | if (dinfo && dinfo->serial) {
|
514 | 4a1e1bc4 | Gerd Hoffmann | usb_desc_set_string(dev, STR_SERIALNUMBER, dinfo->serial); |
515 | 4a1e1bc4 | Gerd Hoffmann | } |
516 | 4a1e1bc4 | Gerd Hoffmann | |
517 | a980a065 | Gerd Hoffmann | usb_desc_init(dev); |
518 | ca9c39fa | Gerd Hoffmann | scsi_bus_new(&s->bus, &s->dev.qdev, 0, 1, usb_msd_command_complete); |
519 | 6bb7b867 | Stefan Hajnoczi | s->scsi_dev = scsi_bus_legacy_add_drive(&s->bus, bs, 0, !!s->removable);
|
520 | fa66b909 | Markus Armbruster | if (!s->scsi_dev) {
|
521 | fa66b909 | Markus Armbruster | return -1; |
522 | fa66b909 | Markus Armbruster | } |
523 | cb23117b | Gerd Hoffmann | s->bus.qbus.allow_hotplug = 0;
|
524 | 7fc2f2c0 | Gerd Hoffmann | usb_msd_handle_reset(dev); |
525 | b3e461d3 | Gerd Hoffmann | |
526 | f8b6cc00 | Markus Armbruster | if (bdrv_key_required(bs)) {
|
527 | a4426488 | Markus Armbruster | if (cur_mon) {
|
528 | f8b6cc00 | Markus Armbruster | monitor_read_bdrv_key_start(cur_mon, bs, usb_msd_password_cb, s); |
529 | b3e461d3 | Gerd Hoffmann | s->dev.auto_attach = 0;
|
530 | b3e461d3 | Gerd Hoffmann | } else {
|
531 | b3e461d3 | Gerd Hoffmann | autostart = 0;
|
532 | b3e461d3 | Gerd Hoffmann | } |
533 | b3e461d3 | Gerd Hoffmann | } |
534 | b3e461d3 | Gerd Hoffmann | |
535 | cf8ce30d | Gleb Natapov | add_boot_device_path(s->conf.bootindex, &dev->qdev, "/disk@0,0");
|
536 | 806b6024 | Gerd Hoffmann | return 0; |
537 | 806b6024 | Gerd Hoffmann | } |
538 | 806b6024 | Gerd Hoffmann | |
539 | b3e461d3 | Gerd Hoffmann | static USBDevice *usb_msd_init(const char *filename) |
540 | 2e5d83bb | pbrook | { |
541 | 7fc2f2c0 | Gerd Hoffmann | static int nr=0; |
542 | 7fc2f2c0 | Gerd Hoffmann | char id[8]; |
543 | 7fc2f2c0 | Gerd Hoffmann | QemuOpts *opts; |
544 | 7fc2f2c0 | Gerd Hoffmann | DriveInfo *dinfo; |
545 | 806b6024 | Gerd Hoffmann | USBDevice *dev; |
546 | 334c0241 | aurel32 | const char *p1; |
547 | 334c0241 | aurel32 | char fmt[32]; |
548 | 334c0241 | aurel32 | |
549 | 7fc2f2c0 | Gerd Hoffmann | /* parse -usbdevice disk: syntax into drive opts */
|
550 | 7fc2f2c0 | Gerd Hoffmann | snprintf(id, sizeof(id), "usb%d", nr++); |
551 | 3329f07b | Gerd Hoffmann | opts = qemu_opts_create(qemu_find_opts("drive"), id, 0); |
552 | 7fc2f2c0 | Gerd Hoffmann | |
553 | 334c0241 | aurel32 | p1 = strchr(filename, ':');
|
554 | 334c0241 | aurel32 | if (p1++) {
|
555 | 334c0241 | aurel32 | const char *p2; |
556 | 334c0241 | aurel32 | |
557 | 334c0241 | aurel32 | if (strstart(filename, "format=", &p2)) { |
558 | 334c0241 | aurel32 | int len = MIN(p1 - p2, sizeof(fmt)); |
559 | 334c0241 | aurel32 | pstrcpy(fmt, len, p2); |
560 | 7fc2f2c0 | Gerd Hoffmann | qemu_opt_set(opts, "format", fmt);
|
561 | 334c0241 | aurel32 | } else if (*filename != ':') { |
562 | 334c0241 | aurel32 | printf("unrecognized USB mass-storage option %s\n", filename);
|
563 | 334c0241 | aurel32 | return NULL; |
564 | 334c0241 | aurel32 | } |
565 | 334c0241 | aurel32 | filename = p1; |
566 | 334c0241 | aurel32 | } |
567 | 334c0241 | aurel32 | if (!*filename) {
|
568 | 334c0241 | aurel32 | printf("block device specification needed\n");
|
569 | 334c0241 | aurel32 | return NULL; |
570 | 334c0241 | aurel32 | } |
571 | 7fc2f2c0 | Gerd Hoffmann | qemu_opt_set(opts, "file", filename);
|
572 | 7fc2f2c0 | Gerd Hoffmann | qemu_opt_set(opts, "if", "none"); |
573 | 2e5d83bb | pbrook | |
574 | 7fc2f2c0 | Gerd Hoffmann | /* create host drive */
|
575 | 319ae529 | Markus Armbruster | dinfo = drive_init(opts, 0);
|
576 | 7fc2f2c0 | Gerd Hoffmann | if (!dinfo) {
|
577 | 7fc2f2c0 | Gerd Hoffmann | qemu_opts_del(opts); |
578 | 806b6024 | Gerd Hoffmann | return NULL; |
579 | 7fc2f2c0 | Gerd Hoffmann | } |
580 | 2e5d83bb | pbrook | |
581 | 7fc2f2c0 | Gerd Hoffmann | /* create guest device */
|
582 | 556cd098 | Markus Armbruster | dev = usb_create(NULL /* FIXME */, "usb-storage"); |
583 | d44168ff | Paul Brook | if (!dev) {
|
584 | d44168ff | Paul Brook | return NULL; |
585 | d44168ff | Paul Brook | } |
586 | 18846dee | Markus Armbruster | if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) { |
587 | 18846dee | Markus Armbruster | qdev_free(&dev->qdev); |
588 | 18846dee | Markus Armbruster | return NULL; |
589 | 18846dee | Markus Armbruster | } |
590 | 33e66b86 | Markus Armbruster | if (qdev_init(&dev->qdev) < 0) |
591 | 33e66b86 | Markus Armbruster | return NULL; |
592 | 1f6e24e7 | bellard | |
593 | 7fc2f2c0 | Gerd Hoffmann | return dev;
|
594 | 2e5d83bb | pbrook | } |
595 | bb5fc20f | aliguori | |
596 | 806b6024 | Gerd Hoffmann | static struct USBDeviceInfo msd_info = { |
597 | 06384698 | Markus Armbruster | .product_desc = "QEMU USB MSD",
|
598 | 556cd098 | Markus Armbruster | .qdev.name = "usb-storage",
|
599 | cf8ce30d | Gleb Natapov | .qdev.fw_name = "storage",
|
600 | 806b6024 | Gerd Hoffmann | .qdev.size = sizeof(MSDState),
|
601 | 81bfd2f2 | Gerd Hoffmann | .usb_desc = &desc, |
602 | 806b6024 | Gerd Hoffmann | .init = usb_msd_initfn, |
603 | 806b6024 | Gerd Hoffmann | .handle_packet = usb_generic_handle_packet, |
604 | eb5e680a | Gerd Hoffmann | .cancel_packet = usb_msd_cancel_io, |
605 | ca0c730d | Gerd Hoffmann | .handle_attach = usb_desc_attach, |
606 | 806b6024 | Gerd Hoffmann | .handle_reset = usb_msd_handle_reset, |
607 | 806b6024 | Gerd Hoffmann | .handle_control = usb_msd_handle_control, |
608 | 806b6024 | Gerd Hoffmann | .handle_data = usb_msd_handle_data, |
609 | b3e461d3 | Gerd Hoffmann | .usbdevice_name = "disk",
|
610 | b3e461d3 | Gerd Hoffmann | .usbdevice_init = usb_msd_init, |
611 | 7fc2f2c0 | Gerd Hoffmann | .qdev.props = (Property[]) { |
612 | 428c149b | Christoph Hellwig | DEFINE_BLOCK_PROPERTIES(MSDState, conf), |
613 | 6bb7b867 | Stefan Hajnoczi | DEFINE_PROP_BIT("removable", MSDState, removable, 0, false), |
614 | 7fc2f2c0 | Gerd Hoffmann | DEFINE_PROP_END_OF_LIST(), |
615 | 7fc2f2c0 | Gerd Hoffmann | }, |
616 | 806b6024 | Gerd Hoffmann | }; |
617 | 806b6024 | Gerd Hoffmann | |
618 | 806b6024 | Gerd Hoffmann | static void usb_msd_register_devices(void) |
619 | 806b6024 | Gerd Hoffmann | { |
620 | 806b6024 | Gerd Hoffmann | usb_qdev_register(&msd_info); |
621 | 806b6024 | Gerd Hoffmann | } |
622 | 806b6024 | Gerd Hoffmann | device_init(usb_msd_register_devices) |