root / hw / usb-msd.c @ 1941d19c
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1 | 2e5d83bb | pbrook | /*
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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 | 2e5d83bb | pbrook | #include "vl.h" |
11 | 2e5d83bb | pbrook | |
12 | 2e5d83bb | pbrook | //#define DEBUG_MSD
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13 | 2e5d83bb | pbrook | |
14 | 2e5d83bb | pbrook | #ifdef DEBUG_MSD
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15 | 2e5d83bb | pbrook | #define DPRINTF(fmt, args...) \
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16 | 2e5d83bb | pbrook | do { printf("usb-msd: " fmt , ##args); } while (0) |
17 | 2e5d83bb | pbrook | #else
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18 | 2e5d83bb | pbrook | #define DPRINTF(fmt, args...) do {} while(0) |
19 | 2e5d83bb | pbrook | #endif
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20 | 2e5d83bb | pbrook | |
21 | 2e5d83bb | pbrook | /* USB requests. */
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22 | 2e5d83bb | pbrook | #define MassStorageReset 0xff |
23 | 2e5d83bb | pbrook | #define GetMaxLun 0xfe |
24 | 2e5d83bb | pbrook | |
25 | 2e5d83bb | pbrook | enum USBMSDMode {
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26 | 2e5d83bb | pbrook | USB_MSDM_CBW, /* Command Block. */
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27 | 2e5d83bb | pbrook | USB_MSDM_DATAOUT, /* Tranfer data to device. */
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28 | 2e5d83bb | pbrook | USB_MSDM_DATAIN, /* Transfer data from device. */
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29 | 2e5d83bb | pbrook | USB_MSDM_CSW /* Command Status. */
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30 | 2e5d83bb | pbrook | }; |
31 | 2e5d83bb | pbrook | |
32 | 2e5d83bb | pbrook | typedef struct { |
33 | 2e5d83bb | pbrook | USBDevice dev; |
34 | 2e5d83bb | pbrook | enum USBMSDMode mode;
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35 | 2e5d83bb | pbrook | uint32_t data_len; |
36 | 4d611c9a | pbrook | uint32_t transfer_len; |
37 | 2e5d83bb | pbrook | uint32_t tag; |
38 | 2e5d83bb | pbrook | SCSIDevice *scsi_dev; |
39 | 2e5d83bb | pbrook | int result;
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40 | 4d611c9a | pbrook | /* For async completion. */
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41 | 4d611c9a | pbrook | USBPacket *packet; |
42 | 2e5d83bb | pbrook | } MSDState; |
43 | 2e5d83bb | pbrook | |
44 | 2e5d83bb | pbrook | static const uint8_t qemu_msd_dev_descriptor[] = { |
45 | 2e5d83bb | pbrook | 0x12, /* u8 bLength; */ |
46 | 2e5d83bb | pbrook | 0x01, /* u8 bDescriptorType; Device */ |
47 | 2e5d83bb | pbrook | 0x10, 0x00, /* u16 bcdUSB; v1.0 */ |
48 | 2e5d83bb | pbrook | |
49 | 2e5d83bb | pbrook | 0x00, /* u8 bDeviceClass; */ |
50 | 2e5d83bb | pbrook | 0x00, /* u8 bDeviceSubClass; */ |
51 | 2e5d83bb | pbrook | 0x00, /* u8 bDeviceProtocol; [ low/full speeds only ] */ |
52 | 2e5d83bb | pbrook | 0x08, /* u8 bMaxPacketSize0; 8 Bytes */ |
53 | 2e5d83bb | pbrook | |
54 | 2e5d83bb | pbrook | /* Vendor and product id are arbitrary. */
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55 | 2e5d83bb | pbrook | 0x00, 0x00, /* u16 idVendor; */ |
56 | 2e5d83bb | pbrook | 0x00, 0x00, /* u16 idProduct; */ |
57 | 2e5d83bb | pbrook | 0x00, 0x00, /* u16 bcdDevice */ |
58 | 2e5d83bb | pbrook | |
59 | 2e5d83bb | pbrook | 0x01, /* u8 iManufacturer; */ |
60 | 2e5d83bb | pbrook | 0x02, /* u8 iProduct; */ |
61 | 2e5d83bb | pbrook | 0x03, /* u8 iSerialNumber; */ |
62 | 2e5d83bb | pbrook | 0x01 /* u8 bNumConfigurations; */ |
63 | 2e5d83bb | pbrook | }; |
64 | 2e5d83bb | pbrook | |
65 | 2e5d83bb | pbrook | static const uint8_t qemu_msd_config_descriptor[] = { |
66 | 2e5d83bb | pbrook | |
67 | 2e5d83bb | pbrook | /* one configuration */
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68 | 2e5d83bb | pbrook | 0x09, /* u8 bLength; */ |
69 | 2e5d83bb | pbrook | 0x02, /* u8 bDescriptorType; Configuration */ |
70 | 2e5d83bb | pbrook | 0x20, 0x00, /* u16 wTotalLength; */ |
71 | 2e5d83bb | pbrook | 0x01, /* u8 bNumInterfaces; (1) */ |
72 | 2e5d83bb | pbrook | 0x01, /* u8 bConfigurationValue; */ |
73 | 2e5d83bb | pbrook | 0x00, /* u8 iConfiguration; */ |
74 | 2e5d83bb | pbrook | 0xc0, /* u8 bmAttributes; |
75 | 2e5d83bb | pbrook | Bit 7: must be set,
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76 | 2e5d83bb | pbrook | 6: Self-powered,
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77 | 2e5d83bb | pbrook | 5: Remote wakeup,
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78 | 2e5d83bb | pbrook | 4..0: resvd */
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79 | 2e5d83bb | pbrook | 0x00, /* u8 MaxPower; */ |
80 | 2e5d83bb | pbrook | |
81 | 2e5d83bb | pbrook | /* one interface */
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82 | 2e5d83bb | pbrook | 0x09, /* u8 if_bLength; */ |
83 | 2e5d83bb | pbrook | 0x04, /* u8 if_bDescriptorType; Interface */ |
84 | 2e5d83bb | pbrook | 0x00, /* u8 if_bInterfaceNumber; */ |
85 | 2e5d83bb | pbrook | 0x00, /* u8 if_bAlternateSetting; */ |
86 | 2e5d83bb | pbrook | 0x02, /* u8 if_bNumEndpoints; */ |
87 | 2e5d83bb | pbrook | 0x08, /* u8 if_bInterfaceClass; MASS STORAGE */ |
88 | 2e5d83bb | pbrook | 0x06, /* u8 if_bInterfaceSubClass; SCSI */ |
89 | 2e5d83bb | pbrook | 0x50, /* u8 if_bInterfaceProtocol; Bulk Only */ |
90 | 2e5d83bb | pbrook | 0x00, /* u8 if_iInterface; */ |
91 | 2e5d83bb | pbrook | |
92 | 2e5d83bb | pbrook | /* Bulk-In endpoint */
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93 | 2e5d83bb | pbrook | 0x07, /* u8 ep_bLength; */ |
94 | 2e5d83bb | pbrook | 0x05, /* u8 ep_bDescriptorType; Endpoint */ |
95 | 2e5d83bb | pbrook | 0x81, /* u8 ep_bEndpointAddress; IN Endpoint 1 */ |
96 | 2e5d83bb | pbrook | 0x02, /* u8 ep_bmAttributes; Bulk */ |
97 | 2e5d83bb | pbrook | 0x40, 0x00, /* u16 ep_wMaxPacketSize; */ |
98 | 2e5d83bb | pbrook | 0x00, /* u8 ep_bInterval; */ |
99 | 2e5d83bb | pbrook | |
100 | 2e5d83bb | pbrook | /* Bulk-Out endpoint */
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101 | 2e5d83bb | pbrook | 0x07, /* u8 ep_bLength; */ |
102 | 2e5d83bb | pbrook | 0x05, /* u8 ep_bDescriptorType; Endpoint */ |
103 | 2e5d83bb | pbrook | 0x02, /* u8 ep_bEndpointAddress; OUT Endpoint 2 */ |
104 | 2e5d83bb | pbrook | 0x02, /* u8 ep_bmAttributes; Bulk */ |
105 | 2e5d83bb | pbrook | 0x40, 0x00, /* u16 ep_wMaxPacketSize; */ |
106 | 2e5d83bb | pbrook | 0x00 /* u8 ep_bInterval; */ |
107 | 2e5d83bb | pbrook | }; |
108 | 2e5d83bb | pbrook | |
109 | 4d611c9a | pbrook | static void usb_msd_command_complete(void *opaque, uint32_t reason, int fail) |
110 | 2e5d83bb | pbrook | { |
111 | 2e5d83bb | pbrook | MSDState *s = (MSDState *)opaque; |
112 | 4d611c9a | pbrook | USBPacket *p; |
113 | 4d611c9a | pbrook | |
114 | 4d611c9a | pbrook | s->data_len -= s->transfer_len; |
115 | 4d611c9a | pbrook | s->transfer_len = 0;
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116 | 4d611c9a | pbrook | if (reason == SCSI_REASON_DONE) {
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117 | 4d611c9a | pbrook | DPRINTF("Command complete %d\n", fail);
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118 | 4d611c9a | pbrook | s->result = fail; |
119 | 4d611c9a | pbrook | s->mode = USB_MSDM_CSW; |
120 | 4d611c9a | pbrook | } |
121 | 4d611c9a | pbrook | if (s->packet) {
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122 | 4d611c9a | pbrook | /* Set s->packet to NULL before calling usb_packet_complete because
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123 | 4d611c9a | pbrook | annother request may be issues before usb_packet_complete returns.
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124 | 4d611c9a | pbrook | */
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125 | 4d611c9a | pbrook | DPRINTF("Packet complete %p\n", p);
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126 | 4d611c9a | pbrook | p = s->packet; |
127 | 4d611c9a | pbrook | s->packet = NULL;
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128 | 4d611c9a | pbrook | usb_packet_complete(p); |
129 | 4d611c9a | pbrook | } |
130 | 2e5d83bb | pbrook | } |
131 | 2e5d83bb | pbrook | |
132 | 059809e4 | bellard | static void usb_msd_handle_reset(USBDevice *dev) |
133 | 2e5d83bb | pbrook | { |
134 | 2e5d83bb | pbrook | MSDState *s = (MSDState *)dev; |
135 | 2e5d83bb | pbrook | |
136 | 2e5d83bb | pbrook | DPRINTF("Reset\n");
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137 | 2e5d83bb | pbrook | s->mode = USB_MSDM_CBW; |
138 | 2e5d83bb | pbrook | } |
139 | 2e5d83bb | pbrook | |
140 | 2e5d83bb | pbrook | static int usb_msd_handle_control(USBDevice *dev, int request, int value, |
141 | 2e5d83bb | pbrook | int index, int length, uint8_t *data) |
142 | 2e5d83bb | pbrook | { |
143 | 2e5d83bb | pbrook | MSDState *s = (MSDState *)dev; |
144 | 2e5d83bb | pbrook | int ret = 0; |
145 | 2e5d83bb | pbrook | |
146 | 2e5d83bb | pbrook | switch (request) {
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147 | 2e5d83bb | pbrook | case DeviceRequest | USB_REQ_GET_STATUS:
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148 | 2e5d83bb | pbrook | data[0] = (1 << USB_DEVICE_SELF_POWERED) | |
149 | 2e5d83bb | pbrook | (dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP); |
150 | 2e5d83bb | pbrook | data[1] = 0x00; |
151 | 2e5d83bb | pbrook | ret = 2;
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152 | 2e5d83bb | pbrook | break;
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153 | 2e5d83bb | pbrook | case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
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154 | 2e5d83bb | pbrook | if (value == USB_DEVICE_REMOTE_WAKEUP) {
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155 | 2e5d83bb | pbrook | dev->remote_wakeup = 0;
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156 | 2e5d83bb | pbrook | } else {
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157 | 2e5d83bb | pbrook | goto fail;
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158 | 2e5d83bb | pbrook | } |
159 | 2e5d83bb | pbrook | ret = 0;
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160 | 2e5d83bb | pbrook | break;
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161 | 2e5d83bb | pbrook | case DeviceOutRequest | USB_REQ_SET_FEATURE:
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162 | 2e5d83bb | pbrook | if (value == USB_DEVICE_REMOTE_WAKEUP) {
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163 | 2e5d83bb | pbrook | dev->remote_wakeup = 1;
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164 | 2e5d83bb | pbrook | } else {
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165 | 2e5d83bb | pbrook | goto fail;
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166 | 2e5d83bb | pbrook | } |
167 | 2e5d83bb | pbrook | ret = 0;
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168 | 2e5d83bb | pbrook | break;
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169 | 2e5d83bb | pbrook | case DeviceOutRequest | USB_REQ_SET_ADDRESS:
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170 | 2e5d83bb | pbrook | dev->addr = value; |
171 | 2e5d83bb | pbrook | ret = 0;
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172 | 2e5d83bb | pbrook | break;
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173 | 2e5d83bb | pbrook | case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
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174 | 2e5d83bb | pbrook | switch(value >> 8) { |
175 | 2e5d83bb | pbrook | case USB_DT_DEVICE:
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176 | 2e5d83bb | pbrook | memcpy(data, qemu_msd_dev_descriptor, |
177 | 2e5d83bb | pbrook | sizeof(qemu_msd_dev_descriptor));
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178 | 2e5d83bb | pbrook | ret = sizeof(qemu_msd_dev_descriptor);
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179 | 2e5d83bb | pbrook | break;
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180 | 2e5d83bb | pbrook | case USB_DT_CONFIG:
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181 | 2e5d83bb | pbrook | memcpy(data, qemu_msd_config_descriptor, |
182 | 2e5d83bb | pbrook | sizeof(qemu_msd_config_descriptor));
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183 | 2e5d83bb | pbrook | ret = sizeof(qemu_msd_config_descriptor);
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184 | 2e5d83bb | pbrook | break;
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185 | 2e5d83bb | pbrook | case USB_DT_STRING:
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186 | 2e5d83bb | pbrook | switch(value & 0xff) { |
187 | 2e5d83bb | pbrook | case 0: |
188 | 2e5d83bb | pbrook | /* language ids */
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189 | 2e5d83bb | pbrook | data[0] = 4; |
190 | 2e5d83bb | pbrook | data[1] = 3; |
191 | 2e5d83bb | pbrook | data[2] = 0x09; |
192 | 2e5d83bb | pbrook | data[3] = 0x04; |
193 | 2e5d83bb | pbrook | ret = 4;
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194 | 2e5d83bb | pbrook | break;
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195 | 2e5d83bb | pbrook | case 1: |
196 | 2e5d83bb | pbrook | /* vendor description */
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197 | 2e5d83bb | pbrook | ret = set_usb_string(data, "QEMU " QEMU_VERSION);
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198 | 2e5d83bb | pbrook | break;
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199 | 2e5d83bb | pbrook | case 2: |
200 | 2e5d83bb | pbrook | /* product description */
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201 | 2e5d83bb | pbrook | ret = set_usb_string(data, "QEMU USB HARDDRIVE");
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202 | 2e5d83bb | pbrook | break;
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203 | 2e5d83bb | pbrook | case 3: |
204 | 2e5d83bb | pbrook | /* serial number */
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205 | 2e5d83bb | pbrook | ret = set_usb_string(data, "1");
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206 | 2e5d83bb | pbrook | break;
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207 | 2e5d83bb | pbrook | default:
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208 | 2e5d83bb | pbrook | goto fail;
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209 | 2e5d83bb | pbrook | } |
210 | 2e5d83bb | pbrook | break;
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211 | 2e5d83bb | pbrook | default:
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212 | 2e5d83bb | pbrook | goto fail;
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213 | 2e5d83bb | pbrook | } |
214 | 2e5d83bb | pbrook | break;
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215 | 2e5d83bb | pbrook | case DeviceRequest | USB_REQ_GET_CONFIGURATION:
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216 | 2e5d83bb | pbrook | data[0] = 1; |
217 | 2e5d83bb | pbrook | ret = 1;
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218 | 2e5d83bb | pbrook | break;
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219 | 2e5d83bb | pbrook | case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
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220 | 2e5d83bb | pbrook | ret = 0;
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221 | 2e5d83bb | pbrook | break;
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222 | 2e5d83bb | pbrook | case DeviceRequest | USB_REQ_GET_INTERFACE:
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223 | 2e5d83bb | pbrook | data[0] = 0; |
224 | 2e5d83bb | pbrook | ret = 1;
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225 | 2e5d83bb | pbrook | break;
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226 | 2e5d83bb | pbrook | case DeviceOutRequest | USB_REQ_SET_INTERFACE:
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227 | 2e5d83bb | pbrook | ret = 0;
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228 | 2e5d83bb | pbrook | break;
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229 | 2e5d83bb | pbrook | case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
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230 | 2e5d83bb | pbrook | if (value == 0 && index != 0x81) { /* clear ep halt */ |
231 | 2e5d83bb | pbrook | goto fail;
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232 | 2e5d83bb | pbrook | } |
233 | 2e5d83bb | pbrook | ret = 0;
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234 | 2e5d83bb | pbrook | break;
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235 | 2e5d83bb | pbrook | /* Class specific requests. */
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236 | 2e5d83bb | pbrook | case MassStorageReset:
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237 | 2e5d83bb | pbrook | /* Reset state ready for the next CBW. */
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238 | 2e5d83bb | pbrook | s->mode = USB_MSDM_CBW; |
239 | 2e5d83bb | pbrook | ret = 0;
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240 | 2e5d83bb | pbrook | break;
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241 | 2e5d83bb | pbrook | case GetMaxLun:
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242 | 2e5d83bb | pbrook | data[0] = 0; |
243 | 2e5d83bb | pbrook | ret = 1;
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244 | 2e5d83bb | pbrook | break;
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245 | 2e5d83bb | pbrook | default:
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246 | 2e5d83bb | pbrook | fail:
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247 | 2e5d83bb | pbrook | ret = USB_RET_STALL; |
248 | 2e5d83bb | pbrook | break;
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249 | 2e5d83bb | pbrook | } |
250 | 2e5d83bb | pbrook | return ret;
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251 | 2e5d83bb | pbrook | } |
252 | 2e5d83bb | pbrook | |
253 | 2e5d83bb | pbrook | struct usb_msd_cbw {
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254 | 2e5d83bb | pbrook | uint32_t sig; |
255 | 2e5d83bb | pbrook | uint32_t tag; |
256 | 2e5d83bb | pbrook | uint32_t data_len; |
257 | 2e5d83bb | pbrook | uint8_t flags; |
258 | 2e5d83bb | pbrook | uint8_t lun; |
259 | 2e5d83bb | pbrook | uint8_t cmd_len; |
260 | 2e5d83bb | pbrook | uint8_t cmd[16];
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261 | 2e5d83bb | pbrook | }; |
262 | 2e5d83bb | pbrook | |
263 | 2e5d83bb | pbrook | struct usb_msd_csw {
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264 | 2e5d83bb | pbrook | uint32_t sig; |
265 | 2e5d83bb | pbrook | uint32_t tag; |
266 | 2e5d83bb | pbrook | uint32_t residue; |
267 | 2e5d83bb | pbrook | uint8_t status; |
268 | 2e5d83bb | pbrook | }; |
269 | 2e5d83bb | pbrook | |
270 | 4d611c9a | pbrook | static void usb_msd_cancel_io(USBPacket *p, void *opaque) |
271 | 4d611c9a | pbrook | { |
272 | 4d611c9a | pbrook | MSDState *s = opaque; |
273 | 4d611c9a | pbrook | scsi_cancel_io(s->scsi_dev); |
274 | 4d611c9a | pbrook | s->packet = NULL;
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275 | 4d611c9a | pbrook | } |
276 | 4d611c9a | pbrook | |
277 | 4d611c9a | pbrook | static int usb_msd_handle_data(USBDevice *dev, USBPacket *p) |
278 | 2e5d83bb | pbrook | { |
279 | 2e5d83bb | pbrook | MSDState *s = (MSDState *)dev; |
280 | 2e5d83bb | pbrook | int ret = 0; |
281 | 2e5d83bb | pbrook | struct usb_msd_cbw cbw;
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282 | 2e5d83bb | pbrook | struct usb_msd_csw csw;
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283 | 4d611c9a | pbrook | uint8_t devep = p->devep; |
284 | 4d611c9a | pbrook | uint8_t *data = p->data; |
285 | 4d611c9a | pbrook | int len = p->len;
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286 | 2e5d83bb | pbrook | |
287 | 4d611c9a | pbrook | switch (p->pid) {
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288 | 2e5d83bb | pbrook | case USB_TOKEN_OUT:
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289 | 2e5d83bb | pbrook | if (devep != 2) |
290 | 2e5d83bb | pbrook | goto fail;
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291 | 2e5d83bb | pbrook | |
292 | 2e5d83bb | pbrook | switch (s->mode) {
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293 | 2e5d83bb | pbrook | case USB_MSDM_CBW:
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294 | 2e5d83bb | pbrook | if (len != 31) { |
295 | 2e5d83bb | pbrook | fprintf(stderr, "usb-msd: Bad CBW size");
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296 | 2e5d83bb | pbrook | goto fail;
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297 | 2e5d83bb | pbrook | } |
298 | 2e5d83bb | pbrook | memcpy(&cbw, data, 31);
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299 | 2e5d83bb | pbrook | if (le32_to_cpu(cbw.sig) != 0x43425355) { |
300 | 2e5d83bb | pbrook | fprintf(stderr, "usb-msd: Bad signature %08x\n",
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301 | 2e5d83bb | pbrook | le32_to_cpu(cbw.sig)); |
302 | 2e5d83bb | pbrook | goto fail;
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303 | 2e5d83bb | pbrook | } |
304 | 2e5d83bb | pbrook | DPRINTF("Command on LUN %d\n", cbw.lun);
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305 | 2e5d83bb | pbrook | if (cbw.lun != 0) { |
306 | 2e5d83bb | pbrook | fprintf(stderr, "usb-msd: Bad LUN %d\n", cbw.lun);
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307 | 2e5d83bb | pbrook | goto fail;
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308 | 2e5d83bb | pbrook | } |
309 | 2e5d83bb | pbrook | s->tag = le32_to_cpu(cbw.tag); |
310 | 2e5d83bb | pbrook | s->data_len = le32_to_cpu(cbw.data_len); |
311 | 2e5d83bb | pbrook | if (s->data_len == 0) { |
312 | 2e5d83bb | pbrook | s->mode = USB_MSDM_CSW; |
313 | 2e5d83bb | pbrook | } else if (cbw.flags & 0x80) { |
314 | 2e5d83bb | pbrook | s->mode = USB_MSDM_DATAIN; |
315 | 2e5d83bb | pbrook | } else {
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316 | 2e5d83bb | pbrook | s->mode = USB_MSDM_DATAOUT; |
317 | 2e5d83bb | pbrook | } |
318 | 2e5d83bb | pbrook | DPRINTF("Command tag 0x%x flags %08x len %d data %d\n",
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319 | 2e5d83bb | pbrook | s->tag, cbw.flags, cbw.cmd_len, s->data_len); |
320 | 0fc5c15a | pbrook | scsi_send_command(s->scsi_dev, s->tag, cbw.cmd, 0);
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321 | 2e5d83bb | pbrook | ret = len; |
322 | 2e5d83bb | pbrook | break;
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323 | 2e5d83bb | pbrook | |
324 | 2e5d83bb | pbrook | case USB_MSDM_DATAOUT:
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325 | 2e5d83bb | pbrook | DPRINTF("Data out %d/%d\n", len, s->data_len);
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326 | 2e5d83bb | pbrook | if (len > s->data_len)
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327 | 2e5d83bb | pbrook | goto fail;
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328 | 2e5d83bb | pbrook | |
329 | 4d611c9a | pbrook | s->transfer_len = len; |
330 | 2e5d83bb | pbrook | if (scsi_write_data(s->scsi_dev, data, len))
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331 | 2e5d83bb | pbrook | goto fail;
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332 | 2e5d83bb | pbrook | |
333 | 4d611c9a | pbrook | if (s->transfer_len == 0) { |
334 | 4d611c9a | pbrook | ret = len; |
335 | 4d611c9a | pbrook | } else {
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336 | 4d611c9a | pbrook | DPRINTF("Deferring packet %p\n", p);
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337 | 4d611c9a | pbrook | usb_defer_packet(p, usb_msd_cancel_io, s); |
338 | 4d611c9a | pbrook | s->packet = p; |
339 | 4d611c9a | pbrook | ret = USB_RET_ASYNC; |
340 | 4d611c9a | pbrook | } |
341 | 2e5d83bb | pbrook | break;
|
342 | 2e5d83bb | pbrook | |
343 | 2e5d83bb | pbrook | default:
|
344 | 2e5d83bb | pbrook | DPRINTF("Unexpected write (len %d)\n", len);
|
345 | 2e5d83bb | pbrook | goto fail;
|
346 | 2e5d83bb | pbrook | } |
347 | 2e5d83bb | pbrook | break;
|
348 | 2e5d83bb | pbrook | |
349 | 2e5d83bb | pbrook | case USB_TOKEN_IN:
|
350 | 2e5d83bb | pbrook | if (devep != 1) |
351 | 2e5d83bb | pbrook | goto fail;
|
352 | 2e5d83bb | pbrook | |
353 | 2e5d83bb | pbrook | switch (s->mode) {
|
354 | 2e5d83bb | pbrook | case USB_MSDM_CSW:
|
355 | 2e5d83bb | pbrook | DPRINTF("Command status %d tag 0x%x, len %d\n",
|
356 | 2e5d83bb | pbrook | s->result, s->tag, len); |
357 | 2e5d83bb | pbrook | if (len < 13) |
358 | 2e5d83bb | pbrook | goto fail;
|
359 | 2e5d83bb | pbrook | |
360 | 2e5d83bb | pbrook | csw.sig = cpu_to_le32(0x53425355);
|
361 | 2e5d83bb | pbrook | csw.tag = cpu_to_le32(s->tag); |
362 | 2e5d83bb | pbrook | csw.residue = 0;
|
363 | 2e5d83bb | pbrook | csw.status = s->result; |
364 | 2e5d83bb | pbrook | memcpy(data, &csw, 13);
|
365 | 2e5d83bb | pbrook | ret = 13;
|
366 | 2e5d83bb | pbrook | s->mode = USB_MSDM_CBW; |
367 | 2e5d83bb | pbrook | break;
|
368 | 2e5d83bb | pbrook | |
369 | 2e5d83bb | pbrook | case USB_MSDM_DATAIN:
|
370 | 2e5d83bb | pbrook | DPRINTF("Data in %d/%d\n", len, s->data_len);
|
371 | 2e5d83bb | pbrook | if (len > s->data_len)
|
372 | 2e5d83bb | pbrook | len = s->data_len; |
373 | 2e5d83bb | pbrook | |
374 | 4d611c9a | pbrook | s->transfer_len = len; |
375 | 2e5d83bb | pbrook | if (scsi_read_data(s->scsi_dev, data, len))
|
376 | 2e5d83bb | pbrook | goto fail;
|
377 | 2e5d83bb | pbrook | |
378 | 4d611c9a | pbrook | if (s->transfer_len == 0) { |
379 | 4d611c9a | pbrook | ret = len; |
380 | 4d611c9a | pbrook | } else {
|
381 | 4d611c9a | pbrook | DPRINTF("Deferring packet %p\n", p);
|
382 | 4d611c9a | pbrook | usb_defer_packet(p, usb_msd_cancel_io, s); |
383 | 4d611c9a | pbrook | s->packet = p; |
384 | 4d611c9a | pbrook | ret = USB_RET_ASYNC; |
385 | 4d611c9a | pbrook | } |
386 | 2e5d83bb | pbrook | break;
|
387 | 2e5d83bb | pbrook | |
388 | 2e5d83bb | pbrook | default:
|
389 | 2e5d83bb | pbrook | DPRINTF("Unexpected read (len %d)\n", len);
|
390 | 2e5d83bb | pbrook | goto fail;
|
391 | 2e5d83bb | pbrook | } |
392 | 2e5d83bb | pbrook | break;
|
393 | 2e5d83bb | pbrook | |
394 | 2e5d83bb | pbrook | default:
|
395 | 2e5d83bb | pbrook | DPRINTF("Bad token\n");
|
396 | 2e5d83bb | pbrook | fail:
|
397 | 2e5d83bb | pbrook | ret = USB_RET_STALL; |
398 | 2e5d83bb | pbrook | break;
|
399 | 2e5d83bb | pbrook | } |
400 | 2e5d83bb | pbrook | |
401 | 2e5d83bb | pbrook | return ret;
|
402 | 2e5d83bb | pbrook | } |
403 | 2e5d83bb | pbrook | |
404 | 059809e4 | bellard | static void usb_msd_handle_destroy(USBDevice *dev) |
405 | 059809e4 | bellard | { |
406 | 059809e4 | bellard | MSDState *s = (MSDState *)dev; |
407 | 059809e4 | bellard | |
408 | 059809e4 | bellard | scsi_disk_destroy(s->scsi_dev); |
409 | 059809e4 | bellard | qemu_free(s); |
410 | 059809e4 | bellard | } |
411 | 2e5d83bb | pbrook | |
412 | 2e5d83bb | pbrook | USBDevice *usb_msd_init(const char *filename) |
413 | 2e5d83bb | pbrook | { |
414 | 2e5d83bb | pbrook | MSDState *s; |
415 | 2e5d83bb | pbrook | BlockDriverState *bdrv; |
416 | 2e5d83bb | pbrook | |
417 | 2e5d83bb | pbrook | s = qemu_mallocz(sizeof(MSDState));
|
418 | 2e5d83bb | pbrook | if (!s)
|
419 | 2e5d83bb | pbrook | return NULL; |
420 | 2e5d83bb | pbrook | |
421 | 2e5d83bb | pbrook | bdrv = bdrv_new("usb");
|
422 | 2e5d83bb | pbrook | bdrv_open(bdrv, filename, 0);
|
423 | 2e5d83bb | pbrook | |
424 | 2e5d83bb | pbrook | s->dev.speed = USB_SPEED_FULL; |
425 | 2e5d83bb | pbrook | s->dev.handle_packet = usb_generic_handle_packet; |
426 | 2e5d83bb | pbrook | |
427 | 2e5d83bb | pbrook | s->dev.handle_reset = usb_msd_handle_reset; |
428 | 2e5d83bb | pbrook | s->dev.handle_control = usb_msd_handle_control; |
429 | 2e5d83bb | pbrook | s->dev.handle_data = usb_msd_handle_data; |
430 | 059809e4 | bellard | s->dev.handle_destroy = usb_msd_handle_destroy; |
431 | 2e5d83bb | pbrook | |
432 | 1f6e24e7 | bellard | snprintf(s->dev.devname, sizeof(s->dev.devname), "QEMU USB MSD(%.16s)", |
433 | 1f6e24e7 | bellard | filename); |
434 | 1f6e24e7 | bellard | |
435 | 2e5d83bb | pbrook | s->scsi_dev = scsi_disk_init(bdrv, usb_msd_command_complete, s); |
436 | 059809e4 | bellard | usb_msd_handle_reset((USBDevice *)s); |
437 | 2e5d83bb | pbrook | return (USBDevice *)s;
|
438 | 2e5d83bb | pbrook | } |