root / hw / usb-msd.c @ aba1f023
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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 | 5c6c0e51 | Hannes Reinecke | SCSIRequest *req; |
52 | ca9c39fa | Gerd Hoffmann | SCSIBus bus; |
53 | 428c149b | Christoph Hellwig | BlockConf conf; |
54 | 2e5d83bb | pbrook | SCSIDevice *scsi_dev; |
55 | 6bb7b867 | Stefan Hajnoczi | uint32_t removable; |
56 | 2e5d83bb | pbrook | int result;
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57 | 4d611c9a | pbrook | /* For async completion. */
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58 | 4d611c9a | pbrook | USBPacket *packet; |
59 | 2e5d83bb | pbrook | } MSDState; |
60 | 2e5d83bb | pbrook | |
61 | a917d384 | pbrook | struct usb_msd_cbw {
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62 | a917d384 | pbrook | uint32_t sig; |
63 | a917d384 | pbrook | uint32_t tag; |
64 | a917d384 | pbrook | uint32_t data_len; |
65 | a917d384 | pbrook | uint8_t flags; |
66 | a917d384 | pbrook | uint8_t lun; |
67 | a917d384 | pbrook | uint8_t cmd_len; |
68 | a917d384 | pbrook | uint8_t cmd[16];
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69 | a917d384 | pbrook | }; |
70 | a917d384 | pbrook | |
71 | a917d384 | pbrook | struct usb_msd_csw {
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72 | a917d384 | pbrook | uint32_t sig; |
73 | a917d384 | pbrook | uint32_t tag; |
74 | a917d384 | pbrook | uint32_t residue; |
75 | a917d384 | pbrook | uint8_t status; |
76 | a917d384 | pbrook | }; |
77 | a917d384 | pbrook | |
78 | 81bfd2f2 | Gerd Hoffmann | enum {
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79 | 81bfd2f2 | Gerd Hoffmann | STR_MANUFACTURER = 1,
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80 | 81bfd2f2 | Gerd Hoffmann | STR_PRODUCT, |
81 | 81bfd2f2 | Gerd Hoffmann | STR_SERIALNUMBER, |
82 | ca0c730d | Gerd Hoffmann | STR_CONFIG_FULL, |
83 | ca0c730d | Gerd Hoffmann | STR_CONFIG_HIGH, |
84 | 2e5d83bb | pbrook | }; |
85 | 2e5d83bb | pbrook | |
86 | 81bfd2f2 | Gerd Hoffmann | static const USBDescStrings desc_strings = { |
87 | 81bfd2f2 | Gerd Hoffmann | [STR_MANUFACTURER] = "QEMU " QEMU_VERSION,
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88 | 81bfd2f2 | Gerd Hoffmann | [STR_PRODUCT] = "QEMU USB HARDDRIVE",
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89 | 81bfd2f2 | Gerd Hoffmann | [STR_SERIALNUMBER] = "1",
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90 | ca0c730d | Gerd Hoffmann | [STR_CONFIG_FULL] = "Full speed config (usb 1.1)",
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91 | ca0c730d | Gerd Hoffmann | [STR_CONFIG_HIGH] = "High speed config (usb 2.0)",
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92 | 81bfd2f2 | Gerd Hoffmann | }; |
93 | 81bfd2f2 | Gerd Hoffmann | |
94 | ca0c730d | Gerd Hoffmann | static const USBDescIface desc_iface_full = { |
95 | 81bfd2f2 | Gerd Hoffmann | .bInterfaceNumber = 0,
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96 | 81bfd2f2 | Gerd Hoffmann | .bNumEndpoints = 2,
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97 | 81bfd2f2 | Gerd Hoffmann | .bInterfaceClass = USB_CLASS_MASS_STORAGE, |
98 | 81bfd2f2 | Gerd Hoffmann | .bInterfaceSubClass = 0x06, /* SCSI */ |
99 | 81bfd2f2 | Gerd Hoffmann | .bInterfaceProtocol = 0x50, /* Bulk */ |
100 | 81bfd2f2 | Gerd Hoffmann | .eps = (USBDescEndpoint[]) { |
101 | 81bfd2f2 | Gerd Hoffmann | { |
102 | 81bfd2f2 | Gerd Hoffmann | .bEndpointAddress = USB_DIR_IN | 0x01,
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103 | 81bfd2f2 | Gerd Hoffmann | .bmAttributes = USB_ENDPOINT_XFER_BULK, |
104 | 81bfd2f2 | Gerd Hoffmann | .wMaxPacketSize = 64,
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105 | 81bfd2f2 | Gerd Hoffmann | },{ |
106 | 81bfd2f2 | Gerd Hoffmann | .bEndpointAddress = USB_DIR_OUT | 0x02,
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107 | 81bfd2f2 | Gerd Hoffmann | .bmAttributes = USB_ENDPOINT_XFER_BULK, |
108 | 81bfd2f2 | Gerd Hoffmann | .wMaxPacketSize = 64,
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109 | 81bfd2f2 | Gerd Hoffmann | }, |
110 | 81bfd2f2 | Gerd Hoffmann | } |
111 | 81bfd2f2 | Gerd Hoffmann | }; |
112 | 81bfd2f2 | Gerd Hoffmann | |
113 | ca0c730d | Gerd Hoffmann | static const USBDescDevice desc_device_full = { |
114 | ca0c730d | Gerd Hoffmann | .bcdUSB = 0x0200,
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115 | 81bfd2f2 | Gerd Hoffmann | .bMaxPacketSize0 = 8,
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116 | 81bfd2f2 | Gerd Hoffmann | .bNumConfigurations = 1,
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117 | 81bfd2f2 | Gerd Hoffmann | .confs = (USBDescConfig[]) { |
118 | 81bfd2f2 | Gerd Hoffmann | { |
119 | 81bfd2f2 | Gerd Hoffmann | .bNumInterfaces = 1,
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120 | 81bfd2f2 | Gerd Hoffmann | .bConfigurationValue = 1,
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121 | ca0c730d | Gerd Hoffmann | .iConfiguration = STR_CONFIG_FULL, |
122 | 81bfd2f2 | Gerd Hoffmann | .bmAttributes = 0xc0,
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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 | ca0c730d | Gerd Hoffmann | .ifs = &desc_iface_high, |
158 | 81bfd2f2 | Gerd Hoffmann | }, |
159 | 81bfd2f2 | Gerd Hoffmann | }, |
160 | 81bfd2f2 | Gerd Hoffmann | }; |
161 | 81bfd2f2 | Gerd Hoffmann | |
162 | 81bfd2f2 | Gerd Hoffmann | static const USBDesc desc = { |
163 | 81bfd2f2 | Gerd Hoffmann | .id = { |
164 | 81bfd2f2 | Gerd Hoffmann | .idVendor = 0,
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165 | 81bfd2f2 | Gerd Hoffmann | .idProduct = 0,
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166 | 81bfd2f2 | Gerd Hoffmann | .bcdDevice = 0,
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167 | 81bfd2f2 | Gerd Hoffmann | .iManufacturer = STR_MANUFACTURER, |
168 | 81bfd2f2 | Gerd Hoffmann | .iProduct = STR_PRODUCT, |
169 | 81bfd2f2 | Gerd Hoffmann | .iSerialNumber = STR_SERIALNUMBER, |
170 | 81bfd2f2 | Gerd Hoffmann | }, |
171 | ca0c730d | Gerd Hoffmann | .full = &desc_device_full, |
172 | ca0c730d | Gerd Hoffmann | .high = &desc_device_high, |
173 | 81bfd2f2 | Gerd Hoffmann | .str = desc_strings, |
174 | 2e5d83bb | pbrook | }; |
175 | 2e5d83bb | pbrook | |
176 | a917d384 | pbrook | static void usb_msd_copy_data(MSDState *s) |
177 | a917d384 | pbrook | { |
178 | a917d384 | pbrook | uint32_t len; |
179 | a917d384 | pbrook | len = s->usb_len; |
180 | a917d384 | pbrook | if (len > s->scsi_len)
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181 | a917d384 | pbrook | len = s->scsi_len; |
182 | a917d384 | pbrook | if (s->mode == USB_MSDM_DATAIN) {
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183 | a917d384 | pbrook | memcpy(s->usb_buf, s->scsi_buf, len); |
184 | a917d384 | pbrook | } else {
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185 | a917d384 | pbrook | memcpy(s->scsi_buf, s->usb_buf, len); |
186 | a917d384 | pbrook | } |
187 | a917d384 | pbrook | s->usb_len -= len; |
188 | a917d384 | pbrook | s->scsi_len -= len; |
189 | a917d384 | pbrook | s->usb_buf += len; |
190 | a917d384 | pbrook | s->scsi_buf += len; |
191 | a917d384 | pbrook | s->data_len -= len; |
192 | fa7935c1 | Gerd Hoffmann | if (s->scsi_len == 0 || s->data_len == 0) { |
193 | ad3376cc | Paolo Bonzini | scsi_req_continue(s->req); |
194 | a917d384 | pbrook | } |
195 | a917d384 | pbrook | } |
196 | a917d384 | pbrook | |
197 | ab4797ad | Gerd Hoffmann | static void usb_msd_send_status(MSDState *s, USBPacket *p) |
198 | a917d384 | pbrook | { |
199 | a917d384 | pbrook | struct usb_msd_csw csw;
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200 | ab4797ad | Gerd Hoffmann | int len;
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201 | a917d384 | pbrook | |
202 | a917d384 | pbrook | csw.sig = cpu_to_le32(0x53425355);
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203 | a917d384 | pbrook | csw.tag = cpu_to_le32(s->tag); |
204 | a917d384 | pbrook | csw.residue = s->residue; |
205 | a917d384 | pbrook | csw.status = s->result; |
206 | ab4797ad | Gerd Hoffmann | |
207 | ab4797ad | Gerd Hoffmann | len = MIN(sizeof(csw), p->len);
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208 | ab4797ad | Gerd Hoffmann | memcpy(p->data, &csw, len); |
209 | a917d384 | pbrook | } |
210 | a917d384 | pbrook | |
211 | aba1f023 | Paolo Bonzini | static void usb_msd_transfer_data(SCSIRequest *req, uint32_t len) |
212 | 2e5d83bb | pbrook | { |
213 | 5c6c0e51 | Hannes Reinecke | MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent); |
214 | a917d384 | pbrook | USBPacket *p = s->packet; |
215 | 4d611c9a | pbrook | |
216 | 5c6c0e51 | Hannes Reinecke | if (req->tag != s->tag) {
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217 | 5c6c0e51 | Hannes Reinecke | fprintf(stderr, "usb-msd: Unexpected SCSI Tag 0x%x\n", req->tag);
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218 | a917d384 | pbrook | } |
219 | c6df7102 | Paolo Bonzini | |
220 | ad3376cc | Paolo Bonzini | assert((s->mode == USB_MSDM_DATAOUT) == (req->cmd.mode == SCSI_XFER_TO_DEV)); |
221 | aba1f023 | Paolo Bonzini | s->scsi_len = len; |
222 | 0c34459b | Paolo Bonzini | s->scsi_buf = scsi_req_get_buf(req); |
223 | a917d384 | pbrook | if (p) {
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224 | a917d384 | pbrook | usb_msd_copy_data(s); |
225 | a917d384 | pbrook | if (s->usb_len == 0) { |
226 | a917d384 | pbrook | /* Set s->packet to NULL before calling usb_packet_complete
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227 | 94843f66 | Brad Hards | because another request may be issued before
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228 | a917d384 | pbrook | usb_packet_complete returns. */
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229 | a917d384 | pbrook | DPRINTF("Packet complete %p\n", p);
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230 | a917d384 | pbrook | s->packet = NULL;
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231 | 13a9a0d3 | Gerd Hoffmann | usb_packet_complete(&s->dev, p); |
232 | a917d384 | pbrook | } |
233 | 4d611c9a | pbrook | } |
234 | 2e5d83bb | pbrook | } |
235 | 2e5d83bb | pbrook | |
236 | aba1f023 | Paolo Bonzini | static void usb_msd_command_complete(SCSIRequest *req, uint32_t status) |
237 | c6df7102 | Paolo Bonzini | { |
238 | c6df7102 | Paolo Bonzini | MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent); |
239 | c6df7102 | Paolo Bonzini | USBPacket *p = s->packet; |
240 | c6df7102 | Paolo Bonzini | |
241 | c6df7102 | Paolo Bonzini | if (req->tag != s->tag) {
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242 | c6df7102 | Paolo Bonzini | fprintf(stderr, "usb-msd: Unexpected SCSI Tag 0x%x\n", req->tag);
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243 | c6df7102 | Paolo Bonzini | } |
244 | aba1f023 | Paolo Bonzini | DPRINTF("Command complete %d\n", status);
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245 | c6df7102 | Paolo Bonzini | s->residue = s->data_len; |
246 | aba1f023 | Paolo Bonzini | s->result = status != 0;
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247 | c6df7102 | Paolo Bonzini | if (s->packet) {
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248 | c6df7102 | Paolo Bonzini | if (s->data_len == 0 && s->mode == USB_MSDM_DATAOUT) { |
249 | c6df7102 | Paolo Bonzini | /* A deferred packet with no write data remaining must be
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250 | c6df7102 | Paolo Bonzini | the status read packet. */
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251 | c6df7102 | Paolo Bonzini | usb_msd_send_status(s, p); |
252 | c6df7102 | Paolo Bonzini | s->mode = USB_MSDM_CBW; |
253 | c6df7102 | Paolo Bonzini | } else {
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254 | c6df7102 | Paolo Bonzini | if (s->data_len) {
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255 | c6df7102 | Paolo Bonzini | s->data_len -= s->usb_len; |
256 | c6df7102 | Paolo Bonzini | if (s->mode == USB_MSDM_DATAIN) {
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257 | c6df7102 | Paolo Bonzini | memset(s->usb_buf, 0, s->usb_len);
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258 | c6df7102 | Paolo Bonzini | } |
259 | c6df7102 | Paolo Bonzini | s->usb_len = 0;
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260 | c6df7102 | Paolo Bonzini | } |
261 | c6df7102 | Paolo Bonzini | if (s->data_len == 0) { |
262 | c6df7102 | Paolo Bonzini | s->mode = USB_MSDM_CSW; |
263 | c6df7102 | Paolo Bonzini | } |
264 | c6df7102 | Paolo Bonzini | } |
265 | c6df7102 | Paolo Bonzini | s->packet = NULL;
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266 | c6df7102 | Paolo Bonzini | usb_packet_complete(&s->dev, p); |
267 | c6df7102 | Paolo Bonzini | } else if (s->data_len == 0) { |
268 | c6df7102 | Paolo Bonzini | s->mode = USB_MSDM_CSW; |
269 | c6df7102 | Paolo Bonzini | } |
270 | c6df7102 | Paolo Bonzini | scsi_req_unref(req); |
271 | c6df7102 | Paolo Bonzini | s->req = NULL;
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272 | c6df7102 | Paolo Bonzini | } |
273 | c6df7102 | Paolo Bonzini | |
274 | 94d3f98a | Paolo Bonzini | static void usb_msd_request_cancelled(SCSIRequest *req) |
275 | 94d3f98a | Paolo Bonzini | { |
276 | 94d3f98a | Paolo Bonzini | MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent); |
277 | 94d3f98a | Paolo Bonzini | |
278 | 94d3f98a | Paolo Bonzini | if (req == s->req) {
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279 | 94d3f98a | Paolo Bonzini | scsi_req_unref(s->req); |
280 | 94d3f98a | Paolo Bonzini | s->req = NULL;
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281 | 94d3f98a | Paolo Bonzini | s->packet = NULL;
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282 | 94d3f98a | Paolo Bonzini | s->scsi_len = 0;
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283 | 94d3f98a | Paolo Bonzini | } |
284 | 94d3f98a | Paolo Bonzini | } |
285 | 94d3f98a | Paolo Bonzini | |
286 | 059809e4 | bellard | static void usb_msd_handle_reset(USBDevice *dev) |
287 | 2e5d83bb | pbrook | { |
288 | 2e5d83bb | pbrook | MSDState *s = (MSDState *)dev; |
289 | 2e5d83bb | pbrook | |
290 | 2e5d83bb | pbrook | DPRINTF("Reset\n");
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291 | 2e5d83bb | pbrook | s->mode = USB_MSDM_CBW; |
292 | 2e5d83bb | pbrook | } |
293 | 2e5d83bb | pbrook | |
294 | 2e5d83bb | pbrook | static int usb_msd_handle_control(USBDevice *dev, int request, int value, |
295 | 2e5d83bb | pbrook | int index, int length, uint8_t *data) |
296 | 2e5d83bb | pbrook | { |
297 | 2e5d83bb | pbrook | MSDState *s = (MSDState *)dev; |
298 | 81bfd2f2 | Gerd Hoffmann | int ret;
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299 | 2e5d83bb | pbrook | |
300 | 81bfd2f2 | Gerd Hoffmann | ret = usb_desc_handle_control(dev, request, value, index, length, data); |
301 | 81bfd2f2 | Gerd Hoffmann | if (ret >= 0) { |
302 | 81bfd2f2 | Gerd Hoffmann | return ret;
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303 | 81bfd2f2 | Gerd Hoffmann | } |
304 | 81bfd2f2 | Gerd Hoffmann | |
305 | 81bfd2f2 | Gerd Hoffmann | ret = 0;
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306 | 2e5d83bb | pbrook | switch (request) {
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307 | 2e5d83bb | pbrook | case DeviceRequest | USB_REQ_GET_INTERFACE:
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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 | case DeviceOutRequest | USB_REQ_SET_INTERFACE:
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312 | 2e5d83bb | pbrook | ret = 0;
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313 | 2e5d83bb | pbrook | break;
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314 | 2e5d83bb | pbrook | case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
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315 | e5322f76 | Arnaud Patard (Rtp) | ret = 0;
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316 | e5322f76 | Arnaud Patard (Rtp) | break;
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317 | e5322f76 | Arnaud Patard (Rtp) | case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
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318 | 2e5d83bb | pbrook | ret = 0;
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319 | 2e5d83bb | pbrook | break;
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320 | 2e5d83bb | pbrook | /* Class specific requests. */
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321 | f3571b1a | Max Reitz | case ClassInterfaceOutRequest | MassStorageReset:
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322 | 2e5d83bb | pbrook | /* Reset state ready for the next CBW. */
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323 | 2e5d83bb | pbrook | s->mode = USB_MSDM_CBW; |
324 | 2e5d83bb | pbrook | ret = 0;
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325 | 2e5d83bb | pbrook | break;
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326 | f3571b1a | Max Reitz | case ClassInterfaceRequest | GetMaxLun:
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327 | 2e5d83bb | pbrook | data[0] = 0; |
328 | 2e5d83bb | pbrook | ret = 1;
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329 | 2e5d83bb | pbrook | break;
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330 | 2e5d83bb | pbrook | default:
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331 | 2e5d83bb | pbrook | ret = USB_RET_STALL; |
332 | 2e5d83bb | pbrook | break;
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333 | 2e5d83bb | pbrook | } |
334 | 2e5d83bb | pbrook | return ret;
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335 | 2e5d83bb | pbrook | } |
336 | 2e5d83bb | pbrook | |
337 | 4d611c9a | pbrook | static void usb_msd_cancel_io(USBPacket *p, void *opaque) |
338 | 4d611c9a | pbrook | { |
339 | 4d611c9a | pbrook | MSDState *s = opaque; |
340 | 94d3f98a | Paolo Bonzini | scsi_req_cancel(s->req); |
341 | 4d611c9a | pbrook | } |
342 | 4d611c9a | pbrook | |
343 | 4d611c9a | pbrook | static int usb_msd_handle_data(USBDevice *dev, USBPacket *p) |
344 | 2e5d83bb | pbrook | { |
345 | 2e5d83bb | pbrook | MSDState *s = (MSDState *)dev; |
346 | 2e5d83bb | pbrook | int ret = 0; |
347 | 2e5d83bb | pbrook | struct usb_msd_cbw cbw;
|
348 | 4d611c9a | pbrook | uint8_t devep = p->devep; |
349 | 4d611c9a | pbrook | uint8_t *data = p->data; |
350 | 4d611c9a | pbrook | int len = p->len;
|
351 | 2e5d83bb | pbrook | |
352 | 4d611c9a | pbrook | switch (p->pid) {
|
353 | 2e5d83bb | pbrook | case USB_TOKEN_OUT:
|
354 | 2e5d83bb | pbrook | if (devep != 2) |
355 | 2e5d83bb | pbrook | goto fail;
|
356 | 2e5d83bb | pbrook | |
357 | 2e5d83bb | pbrook | switch (s->mode) {
|
358 | 2e5d83bb | pbrook | case USB_MSDM_CBW:
|
359 | 2e5d83bb | pbrook | if (len != 31) { |
360 | 2e5d83bb | pbrook | fprintf(stderr, "usb-msd: Bad CBW size");
|
361 | 2e5d83bb | pbrook | goto fail;
|
362 | 2e5d83bb | pbrook | } |
363 | 2e5d83bb | pbrook | memcpy(&cbw, data, 31);
|
364 | 2e5d83bb | pbrook | if (le32_to_cpu(cbw.sig) != 0x43425355) { |
365 | 2e5d83bb | pbrook | fprintf(stderr, "usb-msd: Bad signature %08x\n",
|
366 | 2e5d83bb | pbrook | le32_to_cpu(cbw.sig)); |
367 | 2e5d83bb | pbrook | goto fail;
|
368 | 2e5d83bb | pbrook | } |
369 | 2e5d83bb | pbrook | DPRINTF("Command on LUN %d\n", cbw.lun);
|
370 | 2e5d83bb | pbrook | if (cbw.lun != 0) { |
371 | 2e5d83bb | pbrook | fprintf(stderr, "usb-msd: Bad LUN %d\n", cbw.lun);
|
372 | 2e5d83bb | pbrook | goto fail;
|
373 | 2e5d83bb | pbrook | } |
374 | 2e5d83bb | pbrook | s->tag = le32_to_cpu(cbw.tag); |
375 | 2e5d83bb | pbrook | s->data_len = le32_to_cpu(cbw.data_len); |
376 | 2e5d83bb | pbrook | if (s->data_len == 0) { |
377 | 2e5d83bb | pbrook | s->mode = USB_MSDM_CSW; |
378 | 2e5d83bb | pbrook | } else if (cbw.flags & 0x80) { |
379 | 2e5d83bb | pbrook | s->mode = USB_MSDM_DATAIN; |
380 | 2e5d83bb | pbrook | } else {
|
381 | 2e5d83bb | pbrook | s->mode = USB_MSDM_DATAOUT; |
382 | 2e5d83bb | pbrook | } |
383 | 2e5d83bb | pbrook | DPRINTF("Command tag 0x%x flags %08x len %d data %d\n",
|
384 | 2e5d83bb | pbrook | s->tag, cbw.flags, cbw.cmd_len, s->data_len); |
385 | a917d384 | pbrook | s->residue = 0;
|
386 | ef0bdf77 | Gerd Hoffmann | s->scsi_len = 0;
|
387 | 43a2b339 | Paolo Bonzini | s->req = scsi_req_new(s->scsi_dev, s->tag, 0);
|
388 | fc4f0754 | Paolo Bonzini | scsi_req_enqueue(s->req, cbw.cmd); |
389 | a917d384 | pbrook | /* ??? Should check that USB and SCSI data transfer
|
390 | a917d384 | pbrook | directions match. */
|
391 | ad3376cc | Paolo Bonzini | if (s->mode != USB_MSDM_CSW && s->residue == 0) { |
392 | ad3376cc | Paolo Bonzini | scsi_req_continue(s->req); |
393 | a917d384 | pbrook | } |
394 | 2e5d83bb | pbrook | ret = len; |
395 | 2e5d83bb | pbrook | break;
|
396 | 2e5d83bb | pbrook | |
397 | 2e5d83bb | pbrook | case USB_MSDM_DATAOUT:
|
398 | 2e5d83bb | pbrook | DPRINTF("Data out %d/%d\n", len, s->data_len);
|
399 | 2e5d83bb | pbrook | if (len > s->data_len)
|
400 | 2e5d83bb | pbrook | goto fail;
|
401 | 2e5d83bb | pbrook | |
402 | a917d384 | pbrook | s->usb_buf = data; |
403 | a917d384 | pbrook | s->usb_len = len; |
404 | a917d384 | pbrook | if (s->scsi_len) {
|
405 | a917d384 | pbrook | usb_msd_copy_data(s); |
406 | a917d384 | pbrook | } |
407 | a917d384 | pbrook | if (s->residue && s->usb_len) {
|
408 | a917d384 | pbrook | s->data_len -= s->usb_len; |
409 | a917d384 | pbrook | if (s->data_len == 0) |
410 | a917d384 | pbrook | s->mode = USB_MSDM_CSW; |
411 | a917d384 | pbrook | s->usb_len = 0;
|
412 | a917d384 | pbrook | } |
413 | a917d384 | pbrook | if (s->usb_len) {
|
414 | 4d611c9a | pbrook | DPRINTF("Deferring packet %p\n", p);
|
415 | 4d611c9a | pbrook | usb_defer_packet(p, usb_msd_cancel_io, s); |
416 | 4d611c9a | pbrook | s->packet = p; |
417 | 4d611c9a | pbrook | ret = USB_RET_ASYNC; |
418 | a917d384 | pbrook | } else {
|
419 | a917d384 | pbrook | ret = len; |
420 | 4d611c9a | pbrook | } |
421 | 2e5d83bb | pbrook | break;
|
422 | 2e5d83bb | pbrook | |
423 | 2e5d83bb | pbrook | default:
|
424 | 2e5d83bb | pbrook | DPRINTF("Unexpected write (len %d)\n", len);
|
425 | 2e5d83bb | pbrook | goto fail;
|
426 | 2e5d83bb | pbrook | } |
427 | 2e5d83bb | pbrook | break;
|
428 | 2e5d83bb | pbrook | |
429 | 2e5d83bb | pbrook | case USB_TOKEN_IN:
|
430 | 2e5d83bb | pbrook | if (devep != 1) |
431 | 2e5d83bb | pbrook | goto fail;
|
432 | 2e5d83bb | pbrook | |
433 | 2e5d83bb | pbrook | switch (s->mode) {
|
434 | a917d384 | pbrook | case USB_MSDM_DATAOUT:
|
435 | a917d384 | pbrook | if (s->data_len != 0 || len < 13) |
436 | a917d384 | pbrook | goto fail;
|
437 | a917d384 | pbrook | /* Waiting for SCSI write to complete. */
|
438 | a917d384 | pbrook | usb_defer_packet(p, usb_msd_cancel_io, s); |
439 | a917d384 | pbrook | s->packet = p; |
440 | a917d384 | pbrook | ret = USB_RET_ASYNC; |
441 | a917d384 | pbrook | break;
|
442 | a917d384 | pbrook | |
443 | 2e5d83bb | pbrook | case USB_MSDM_CSW:
|
444 | 2e5d83bb | pbrook | DPRINTF("Command status %d tag 0x%x, len %d\n",
|
445 | 2e5d83bb | pbrook | s->result, s->tag, len); |
446 | 2e5d83bb | pbrook | if (len < 13) |
447 | 2e5d83bb | pbrook | goto fail;
|
448 | 2e5d83bb | pbrook | |
449 | ab4797ad | Gerd Hoffmann | usb_msd_send_status(s, p); |
450 | 2e5d83bb | pbrook | s->mode = USB_MSDM_CBW; |
451 | a917d384 | pbrook | ret = 13;
|
452 | 2e5d83bb | pbrook | break;
|
453 | 2e5d83bb | pbrook | |
454 | 2e5d83bb | pbrook | case USB_MSDM_DATAIN:
|
455 | fa7935c1 | Gerd Hoffmann | DPRINTF("Data in %d/%d, scsi_len %d\n", len, s->data_len, s->scsi_len);
|
456 | 2e5d83bb | pbrook | if (len > s->data_len)
|
457 | 2e5d83bb | pbrook | len = s->data_len; |
458 | a917d384 | pbrook | s->usb_buf = data; |
459 | a917d384 | pbrook | s->usb_len = len; |
460 | a917d384 | pbrook | if (s->scsi_len) {
|
461 | a917d384 | pbrook | usb_msd_copy_data(s); |
462 | a917d384 | pbrook | } |
463 | a917d384 | pbrook | if (s->residue && s->usb_len) {
|
464 | a917d384 | pbrook | s->data_len -= s->usb_len; |
465 | a917d384 | pbrook | memset(s->usb_buf, 0, s->usb_len);
|
466 | a917d384 | pbrook | if (s->data_len == 0) |
467 | a917d384 | pbrook | s->mode = USB_MSDM_CSW; |
468 | a917d384 | pbrook | s->usb_len = 0;
|
469 | a917d384 | pbrook | } |
470 | a917d384 | pbrook | if (s->usb_len) {
|
471 | 4d611c9a | pbrook | DPRINTF("Deferring packet %p\n", p);
|
472 | 4d611c9a | pbrook | usb_defer_packet(p, usb_msd_cancel_io, s); |
473 | 4d611c9a | pbrook | s->packet = p; |
474 | 4d611c9a | pbrook | ret = USB_RET_ASYNC; |
475 | a917d384 | pbrook | } else {
|
476 | a917d384 | pbrook | ret = len; |
477 | 4d611c9a | pbrook | } |
478 | 2e5d83bb | pbrook | break;
|
479 | 2e5d83bb | pbrook | |
480 | 2e5d83bb | pbrook | default:
|
481 | 2e5d83bb | pbrook | DPRINTF("Unexpected read (len %d)\n", len);
|
482 | 2e5d83bb | pbrook | goto fail;
|
483 | 2e5d83bb | pbrook | } |
484 | 2e5d83bb | pbrook | break;
|
485 | 2e5d83bb | pbrook | |
486 | 2e5d83bb | pbrook | default:
|
487 | 2e5d83bb | pbrook | DPRINTF("Bad token\n");
|
488 | 2e5d83bb | pbrook | fail:
|
489 | 2e5d83bb | pbrook | ret = USB_RET_STALL; |
490 | 2e5d83bb | pbrook | break;
|
491 | 2e5d83bb | pbrook | } |
492 | 2e5d83bb | pbrook | |
493 | 2e5d83bb | pbrook | return ret;
|
494 | 2e5d83bb | pbrook | } |
495 | 2e5d83bb | pbrook | |
496 | b3e461d3 | Gerd Hoffmann | static void usb_msd_password_cb(void *opaque, int err) |
497 | b3e461d3 | Gerd Hoffmann | { |
498 | b3e461d3 | Gerd Hoffmann | MSDState *s = opaque; |
499 | b3e461d3 | Gerd Hoffmann | |
500 | b3e461d3 | Gerd Hoffmann | if (!err)
|
501 | b3e461d3 | Gerd Hoffmann | usb_device_attach(&s->dev); |
502 | b3e461d3 | Gerd Hoffmann | else
|
503 | b3e461d3 | Gerd Hoffmann | qdev_unplug(&s->dev.qdev); |
504 | b3e461d3 | Gerd Hoffmann | } |
505 | b3e461d3 | Gerd Hoffmann | |
506 | cfdc1bb0 | Paolo Bonzini | static const struct SCSIBusOps usb_msd_scsi_ops = { |
507 | c6df7102 | Paolo Bonzini | .transfer_data = usb_msd_transfer_data, |
508 | 94d3f98a | Paolo Bonzini | .complete = usb_msd_command_complete, |
509 | 94d3f98a | Paolo Bonzini | .cancel = usb_msd_request_cancelled |
510 | cfdc1bb0 | Paolo Bonzini | }; |
511 | cfdc1bb0 | Paolo Bonzini | |
512 | 806b6024 | Gerd Hoffmann | static int usb_msd_initfn(USBDevice *dev) |
513 | 806b6024 | Gerd Hoffmann | { |
514 | 806b6024 | Gerd Hoffmann | MSDState *s = DO_UPCAST(MSDState, dev, dev); |
515 | f8b6cc00 | Markus Armbruster | BlockDriverState *bs = s->conf.bs; |
516 | 4a1e1bc4 | Gerd Hoffmann | DriveInfo *dinfo; |
517 | 806b6024 | Gerd Hoffmann | |
518 | f8b6cc00 | Markus Armbruster | if (!bs) {
|
519 | 1ecda02b | Markus Armbruster | error_report("usb-msd: drive property not set");
|
520 | 7fc2f2c0 | Gerd Hoffmann | return -1; |
521 | 7fc2f2c0 | Gerd Hoffmann | } |
522 | 7fc2f2c0 | Gerd Hoffmann | |
523 | 14bafc54 | Markus Armbruster | /*
|
524 | 14bafc54 | Markus Armbruster | * Hack alert: this pretends to be a block device, but it's really
|
525 | 14bafc54 | Markus Armbruster | * a SCSI bus that can serve only a single device, which it
|
526 | 18846dee | Markus Armbruster | * creates automatically. But first it needs to detach from its
|
527 | 18846dee | Markus Armbruster | * blockdev, or else scsi_bus_legacy_add_drive() dies when it
|
528 | 18846dee | Markus Armbruster | * attaches again.
|
529 | 14bafc54 | Markus Armbruster | *
|
530 | 14bafc54 | Markus Armbruster | * The hack is probably a bad idea.
|
531 | 14bafc54 | Markus Armbruster | */
|
532 | 18846dee | Markus Armbruster | bdrv_detach(bs, &s->dev.qdev); |
533 | f8b6cc00 | Markus Armbruster | s->conf.bs = NULL;
|
534 | 14bafc54 | Markus Armbruster | |
535 | 4a1e1bc4 | Gerd Hoffmann | dinfo = drive_get_by_blockdev(bs); |
536 | 4a1e1bc4 | Gerd Hoffmann | if (dinfo && dinfo->serial) {
|
537 | 4a1e1bc4 | Gerd Hoffmann | usb_desc_set_string(dev, STR_SERIALNUMBER, dinfo->serial); |
538 | 4a1e1bc4 | Gerd Hoffmann | } |
539 | 4a1e1bc4 | Gerd Hoffmann | |
540 | a980a065 | Gerd Hoffmann | usb_desc_init(dev); |
541 | cfdc1bb0 | Paolo Bonzini | scsi_bus_new(&s->bus, &s->dev.qdev, 0, 1, &usb_msd_scsi_ops); |
542 | 6bb7b867 | Stefan Hajnoczi | s->scsi_dev = scsi_bus_legacy_add_drive(&s->bus, bs, 0, !!s->removable);
|
543 | fa66b909 | Markus Armbruster | if (!s->scsi_dev) {
|
544 | fa66b909 | Markus Armbruster | return -1; |
545 | fa66b909 | Markus Armbruster | } |
546 | cb23117b | Gerd Hoffmann | s->bus.qbus.allow_hotplug = 0;
|
547 | 7fc2f2c0 | Gerd Hoffmann | usb_msd_handle_reset(dev); |
548 | b3e461d3 | Gerd Hoffmann | |
549 | f8b6cc00 | Markus Armbruster | if (bdrv_key_required(bs)) {
|
550 | a4426488 | Markus Armbruster | if (cur_mon) {
|
551 | f8b6cc00 | Markus Armbruster | monitor_read_bdrv_key_start(cur_mon, bs, usb_msd_password_cb, s); |
552 | b3e461d3 | Gerd Hoffmann | s->dev.auto_attach = 0;
|
553 | b3e461d3 | Gerd Hoffmann | } else {
|
554 | b3e461d3 | Gerd Hoffmann | autostart = 0;
|
555 | b3e461d3 | Gerd Hoffmann | } |
556 | b3e461d3 | Gerd Hoffmann | } |
557 | b3e461d3 | Gerd Hoffmann | |
558 | cf8ce30d | Gleb Natapov | add_boot_device_path(s->conf.bootindex, &dev->qdev, "/disk@0,0");
|
559 | 806b6024 | Gerd Hoffmann | return 0; |
560 | 806b6024 | Gerd Hoffmann | } |
561 | 806b6024 | Gerd Hoffmann | |
562 | b3e461d3 | Gerd Hoffmann | static USBDevice *usb_msd_init(const char *filename) |
563 | 2e5d83bb | pbrook | { |
564 | 7fc2f2c0 | Gerd Hoffmann | static int nr=0; |
565 | 7fc2f2c0 | Gerd Hoffmann | char id[8]; |
566 | 7fc2f2c0 | Gerd Hoffmann | QemuOpts *opts; |
567 | 7fc2f2c0 | Gerd Hoffmann | DriveInfo *dinfo; |
568 | 806b6024 | Gerd Hoffmann | USBDevice *dev; |
569 | 334c0241 | aurel32 | const char *p1; |
570 | 334c0241 | aurel32 | char fmt[32]; |
571 | 334c0241 | aurel32 | |
572 | 7fc2f2c0 | Gerd Hoffmann | /* parse -usbdevice disk: syntax into drive opts */
|
573 | 7fc2f2c0 | Gerd Hoffmann | snprintf(id, sizeof(id), "usb%d", nr++); |
574 | 3329f07b | Gerd Hoffmann | opts = qemu_opts_create(qemu_find_opts("drive"), id, 0); |
575 | 7fc2f2c0 | Gerd Hoffmann | |
576 | 334c0241 | aurel32 | p1 = strchr(filename, ':');
|
577 | 334c0241 | aurel32 | if (p1++) {
|
578 | 334c0241 | aurel32 | const char *p2; |
579 | 334c0241 | aurel32 | |
580 | 334c0241 | aurel32 | if (strstart(filename, "format=", &p2)) { |
581 | 334c0241 | aurel32 | int len = MIN(p1 - p2, sizeof(fmt)); |
582 | 334c0241 | aurel32 | pstrcpy(fmt, len, p2); |
583 | 7fc2f2c0 | Gerd Hoffmann | qemu_opt_set(opts, "format", fmt);
|
584 | 334c0241 | aurel32 | } else if (*filename != ':') { |
585 | 334c0241 | aurel32 | printf("unrecognized USB mass-storage option %s\n", filename);
|
586 | 334c0241 | aurel32 | return NULL; |
587 | 334c0241 | aurel32 | } |
588 | 334c0241 | aurel32 | filename = p1; |
589 | 334c0241 | aurel32 | } |
590 | 334c0241 | aurel32 | if (!*filename) {
|
591 | 334c0241 | aurel32 | printf("block device specification needed\n");
|
592 | 334c0241 | aurel32 | return NULL; |
593 | 334c0241 | aurel32 | } |
594 | 7fc2f2c0 | Gerd Hoffmann | qemu_opt_set(opts, "file", filename);
|
595 | 7fc2f2c0 | Gerd Hoffmann | qemu_opt_set(opts, "if", "none"); |
596 | 2e5d83bb | pbrook | |
597 | 7fc2f2c0 | Gerd Hoffmann | /* create host drive */
|
598 | 319ae529 | Markus Armbruster | dinfo = drive_init(opts, 0);
|
599 | 7fc2f2c0 | Gerd Hoffmann | if (!dinfo) {
|
600 | 7fc2f2c0 | Gerd Hoffmann | qemu_opts_del(opts); |
601 | 806b6024 | Gerd Hoffmann | return NULL; |
602 | 7fc2f2c0 | Gerd Hoffmann | } |
603 | 2e5d83bb | pbrook | |
604 | 7fc2f2c0 | Gerd Hoffmann | /* create guest device */
|
605 | 556cd098 | Markus Armbruster | dev = usb_create(NULL /* FIXME */, "usb-storage"); |
606 | d44168ff | Paul Brook | if (!dev) {
|
607 | d44168ff | Paul Brook | return NULL; |
608 | d44168ff | Paul Brook | } |
609 | 18846dee | Markus Armbruster | if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) { |
610 | 18846dee | Markus Armbruster | qdev_free(&dev->qdev); |
611 | 18846dee | Markus Armbruster | return NULL; |
612 | 18846dee | Markus Armbruster | } |
613 | 33e66b86 | Markus Armbruster | if (qdev_init(&dev->qdev) < 0) |
614 | 33e66b86 | Markus Armbruster | return NULL; |
615 | 1f6e24e7 | bellard | |
616 | 7fc2f2c0 | Gerd Hoffmann | return dev;
|
617 | 2e5d83bb | pbrook | } |
618 | bb5fc20f | aliguori | |
619 | 806b6024 | Gerd Hoffmann | static struct USBDeviceInfo msd_info = { |
620 | 06384698 | Markus Armbruster | .product_desc = "QEMU USB MSD",
|
621 | 556cd098 | Markus Armbruster | .qdev.name = "usb-storage",
|
622 | cf8ce30d | Gleb Natapov | .qdev.fw_name = "storage",
|
623 | 806b6024 | Gerd Hoffmann | .qdev.size = sizeof(MSDState),
|
624 | 81bfd2f2 | Gerd Hoffmann | .usb_desc = &desc, |
625 | 806b6024 | Gerd Hoffmann | .init = usb_msd_initfn, |
626 | 806b6024 | Gerd Hoffmann | .handle_packet = usb_generic_handle_packet, |
627 | ca0c730d | Gerd Hoffmann | .handle_attach = usb_desc_attach, |
628 | 806b6024 | Gerd Hoffmann | .handle_reset = usb_msd_handle_reset, |
629 | 806b6024 | Gerd Hoffmann | .handle_control = usb_msd_handle_control, |
630 | 806b6024 | Gerd Hoffmann | .handle_data = usb_msd_handle_data, |
631 | b3e461d3 | Gerd Hoffmann | .usbdevice_name = "disk",
|
632 | b3e461d3 | Gerd Hoffmann | .usbdevice_init = usb_msd_init, |
633 | 7fc2f2c0 | Gerd Hoffmann | .qdev.props = (Property[]) { |
634 | 428c149b | Christoph Hellwig | DEFINE_BLOCK_PROPERTIES(MSDState, conf), |
635 | 6bb7b867 | Stefan Hajnoczi | DEFINE_PROP_BIT("removable", MSDState, removable, 0, false), |
636 | 7fc2f2c0 | Gerd Hoffmann | DEFINE_PROP_END_OF_LIST(), |
637 | 7fc2f2c0 | Gerd Hoffmann | }, |
638 | 806b6024 | Gerd Hoffmann | }; |
639 | 806b6024 | Gerd Hoffmann | |
640 | 806b6024 | Gerd Hoffmann | static void usb_msd_register_devices(void) |
641 | 806b6024 | Gerd Hoffmann | { |
642 | 806b6024 | Gerd Hoffmann | usb_qdev_register(&msd_info); |
643 | 806b6024 | Gerd Hoffmann | } |
644 | 806b6024 | Gerd Hoffmann | device_init(usb_msd_register_devices) |