hw/usb.h

   1 /*
   2  * QEMU USB API
   3  *
   4  * Copyright (c) 2005 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #include "block.h"
  26 #include "qdev.h"
  27 #include "qemu-queue.h"
  28
  29 /* Constants related to the USB / PCI interaction */
  30 #define USB_SBRN    0x60 /* Serial Bus Release Number Register */
  31 #define USB_RELEASE_1  0x10 /* USB 1.0 */
  32 #define USB_RELEASE_2  0x20 /* USB 2.0 */
  33 #define USB_RELEASE_3  0x30 /* USB 3.0 */
  34
  35 #define USB_TOKEN_SETUP 0x2d
  36 #define USB_TOKEN_IN    0x69 /* device -> host */
  37 #define USB_TOKEN_OUT   0xe1 /* host -> device */
  38
  39 /* specific usb messages, also sent in the 'pid' parameter */
  40 #define USB_MSG_ATTACH   0x100
  41 #define USB_MSG_DETACH   0x101
  42 #define USB_MSG_RESET    0x102
  43
  44 #define USB_RET_NODEV  (-1)
  45 #define USB_RET_NAK    (-2)
  46 #define USB_RET_STALL  (-3)
  47 #define USB_RET_BABBLE (-4)
  48 #define USB_RET_ASYNC  (-5)
  49
  50 #define USB_SPEED_LOW   0
  51 #define USB_SPEED_FULL  1
  52 #define USB_SPEED_HIGH  2
  53 #define USB_SPEED_SUPER 3
  54
  55 #define USB_SPEED_MASK_LOW   (1 << USB_SPEED_LOW)
  56 #define USB_SPEED_MASK_FULL  (1 << USB_SPEED_FULL)
  57 #define USB_SPEED_MASK_HIGH  (1 << USB_SPEED_HIGH)
  58 #define USB_SPEED_MASK_SUPER (1 << USB_SPEED_SUPER)
  59
  60 #define USB_STATE_NOTATTACHED 0
  61 #define USB_STATE_ATTACHED    1
  62 //#define USB_STATE_POWERED     2
  63 #define USB_STATE_DEFAULT     3
  64 //#define USB_STATE_ADDRESS     4
  65 //#define       USB_STATE_CONFIGURED  5
  66 #define USB_STATE_SUSPENDED   6
  67
  68 #define USB_CLASS_AUDIO                 1
  69 #define USB_CLASS_COMM                  2
  70 #define USB_CLASS_HID                   3
  71 #define USB_CLASS_PHYSICAL              5
  72 #define USB_CLASS_STILL_IMAGE           6
  73 #define USB_CLASS_PRINTER               7
  74 #define USB_CLASS_MASS_STORAGE          8
  75 #define USB_CLASS_HUB                   9
  76 #define USB_CLASS_CDC_DATA              0x0a
  77 #define USB_CLASS_CSCID                 0x0b
  78 #define USB_CLASS_CONTENT_SEC           0x0d
  79 #define USB_CLASS_APP_SPEC              0xfe
  80 #define USB_CLASS_VENDOR_SPEC           0xff
  81
  82 #define USB_DIR_OUT                     0
  83 #define USB_DIR_IN                      0x80
  84
  85 #define USB_TYPE_MASK                   (0x03 << 5)
  86 #define USB_TYPE_STANDARD               (0x00 << 5)
  87 #define USB_TYPE_CLASS                  (0x01 << 5)
  88 #define USB_TYPE_VENDOR                 (0x02 << 5)
  89 #define USB_TYPE_RESERVED               (0x03 << 5)
  90
  91 #define USB_RECIP_MASK                  0x1f
  92 #define USB_RECIP_DEVICE                0x00
  93 #define USB_RECIP_INTERFACE             0x01
  94 #define USB_RECIP_ENDPOINT              0x02
  95 #define USB_RECIP_OTHER                 0x03
  96
  97 #define DeviceRequest ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8)
  98 #define DeviceOutRequest ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8)
  99 #define InterfaceRequest \
 100         ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
 101 #define InterfaceOutRequest \
 102         ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
 103 #define EndpointRequest ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT)<<8)
 104 #define EndpointOutRequest \
 105         ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT)<<8)
 106 #define ClassInterfaceRequest \
 107         ((USB_DIR_IN|USB_TYPE_CLASS|USB_RECIP_INTERFACE)<<8)
 108 #define ClassInterfaceOutRequest \
 109         ((USB_DIR_OUT|USB_TYPE_CLASS|USB_RECIP_INTERFACE)<<8)
 110
 111 #define USB_REQ_GET_STATUS              0x00
 112 #define USB_REQ_CLEAR_FEATURE           0x01
 113 #define USB_REQ_SET_FEATURE             0x03
 114 #define USB_REQ_SET_ADDRESS             0x05
 115 #define USB_REQ_GET_DESCRIPTOR          0x06
 116 #define USB_REQ_SET_DESCRIPTOR          0x07
 117 #define USB_REQ_GET_CONFIGURATION       0x08
 118 #define USB_REQ_SET_CONFIGURATION       0x09
 119 #define USB_REQ_GET_INTERFACE           0x0A
 120 #define USB_REQ_SET_INTERFACE           0x0B
 121 #define USB_REQ_SYNCH_FRAME             0x0C
 122
 123 #define USB_DEVICE_SELF_POWERED         0
 124 #define USB_DEVICE_REMOTE_WAKEUP        1
 125
 126 #define USB_DT_DEVICE                   0x01
 127 #define USB_DT_CONFIG                   0x02
 128 #define USB_DT_STRING                   0x03
 129 #define USB_DT_INTERFACE                0x04
 130 #define USB_DT_ENDPOINT                 0x05
 131 #define USB_DT_DEVICE_QUALIFIER         0x06
 132 #define USB_DT_OTHER_SPEED_CONFIG       0x07
 133 #define USB_DT_INTERFACE_ASSOC          0x0B
 134
 135 #define USB_ENDPOINT_XFER_CONTROL       0
 136 #define USB_ENDPOINT_XFER_ISOC          1
 137 #define USB_ENDPOINT_XFER_BULK          2
 138 #define USB_ENDPOINT_XFER_INT           3
 139
 140 typedef struct USBBus USBBus;
 141 typedef struct USBBusOps USBBusOps;
 142 typedef struct USBPort USBPort;
 143 typedef struct USBDevice USBDevice;
 144 typedef struct USBDeviceInfo USBDeviceInfo;
 145 typedef struct USBPacket USBPacket;
 146
 147 typedef struct USBDesc USBDesc;
 148 typedef struct USBDescID USBDescID;
 149 typedef struct USBDescDevice USBDescDevice;
 150 typedef struct USBDescConfig USBDescConfig;
 151 typedef struct USBDescIfaceAssoc USBDescIfaceAssoc;
 152 typedef struct USBDescIface USBDescIface;
 153 typedef struct USBDescEndpoint USBDescEndpoint;
 154 typedef struct USBDescOther USBDescOther;
 155 typedef struct USBDescString USBDescString;
 156
 157 struct USBDescString {
 158     uint8_t index;
 159     char *str;
 160     QLIST_ENTRY(USBDescString) next;
 161 };
 162
 163 /* definition of a USB device */
 164 struct USBDevice {
 165     DeviceState qdev;
 166     USBDeviceInfo *info;
 167     USBPort *port;
 168     char *port_path;
 169     void *opaque;
 170
 171     int speed;
 172     uint8_t addr;
 173     char product_desc[32];
 174     int auto_attach;
 175     int attached;
 176
 177     int32_t state;
 178     uint8_t setup_buf[8];
 179     uint8_t data_buf[4096];
 180     int32_t remote_wakeup;
 181     int32_t setup_state;
 182     int32_t setup_len;
 183     int32_t setup_index;
 184
 185     QLIST_HEAD(, USBDescString) strings;
 186     const USBDescDevice *device;
 187     const USBDescConfig *config;
 188 };
 189
 190 struct USBDeviceInfo {
 191     DeviceInfo qdev;
 192     int (*init)(USBDevice *dev);
 193
 194     /*
 195      * Process USB packet.
 196      * Called by the HC (Host Controller).
 197      *
 198      * Returns length of the transaction
 199      * or one of the USB_RET_XXX codes.
 200      */
 201     int (*handle_packet)(USBDevice *dev, USBPacket *p);
 202
 203     /*
 204      * Called when a packet is canceled.
 205      */
 206     void (*cancel_packet)(USBDevice *dev, USBPacket *p);
 207
 208     /*
 209      * Called when device is destroyed.
 210      */
 211     void (*handle_destroy)(USBDevice *dev);
 212
 213     /*
 214      * Attach the device
 215      */
 216     void (*handle_attach)(USBDevice *dev);
 217
 218     /*
 219      * Reset the device
 220      */
 221     void (*handle_reset)(USBDevice *dev);
 222
 223     /*
 224      * Process control request.
 225      * Called from handle_packet().
 226      *
 227      * Returns length or one of the USB_RET_ codes.
 228      */
 229     int (*handle_control)(USBDevice *dev, USBPacket *p, int request, int value,
 230                           int index, int length, uint8_t *data);
 231
 232     /*
 233      * Process data transfers (both BULK and ISOC).
 234      * Called from handle_packet().
 235      *
 236      * Returns length or one of the USB_RET_ codes.
 237      */
 238     int (*handle_data)(USBDevice *dev, USBPacket *p);
 239
 240     const char *product_desc;
 241     const USBDesc *usb_desc;
 242
 243     /* handle legacy -usbdevice command line options */
 244     const char *usbdevice_name;
 245     USBDevice *(*usbdevice_init)(const char *params);
 246 };
 247
 248 typedef struct USBPortOps {
 249     void (*attach)(USBPort *port);
 250     void (*detach)(USBPort *port);
 251     void (*wakeup)(USBDevice *dev);
 252     void (*complete)(USBDevice *dev, USBPacket *p);
 253 } USBPortOps;
 254
 255 /* USB port on which a device can be connected */
 256 struct USBPort {
 257     USBDevice *dev;
 258     int speedmask;
 259     char path[16];
 260     USBPortOps *ops;
 261     void *opaque;
 262     int index; /* internal port index, may be used with the opaque */
 263     QTAILQ_ENTRY(USBPort) next;
 264 };
 265
 266 typedef void USBCallback(USBPacket * packet, void *opaque);
 267
 268 /* Structure used to hold information about an active USB packet.  */
 269 struct USBPacket {
 270     /* Data fields for use by the driver.  */
 271     int pid;
 272     uint8_t devaddr;
 273     uint8_t devep;
 274     uint8_t *data;
 275     int len;
 276     /* Internal use by the USB layer.  */
 277     USBDevice *owner;
 278 };
 279
 280 int usb_handle_packet(USBDevice *dev, USBPacket *p);
 281 void usb_packet_complete(USBDevice *dev, USBPacket *p);
 282 void usb_cancel_packet(USBPacket * p);
 283
 284 void usb_attach(USBPort *port, USBDevice *dev);
 285 void usb_wakeup(USBDevice *dev);
 286 int usb_generic_handle_packet(USBDevice *s, USBPacket *p);
 287 void usb_generic_async_ctrl_complete(USBDevice *s, USBPacket *p);
 288 int set_usb_string(uint8_t *buf, const char *str);
 289 void usb_send_msg(USBDevice *dev, int msg);
 290
 291 /* usb-linux.c */
 292 USBDevice *usb_host_device_open(const char *devname);
 293 int usb_host_device_close(const char *devname);
 294 void usb_host_info(Monitor *mon);
 295
 296 /* usb-hid.c */
 297 void usb_hid_datain_cb(USBDevice *dev, void *opaque, void (*datain)(void *));
 298
 299 /* usb-bt.c */
 300 USBDevice *usb_bt_init(HCIInfo *hci);
 301
 302 /* usb ports of the VM */
 303
 304 #define VM_USB_HUB_SIZE 8
 305
 306 /* usb-musb.c */
 307 enum musb_irq_source_e {
 308     musb_irq_suspend = 0,
 309     musb_irq_resume,
 310     musb_irq_rst_babble,
 311     musb_irq_sof,
 312     musb_irq_connect,
 313     musb_irq_disconnect,
 314     musb_irq_vbus_request,
 315     musb_irq_vbus_error,
 316     musb_irq_rx,
 317     musb_irq_tx,
 318     musb_set_vbus,
 319     musb_set_session,
 320     __musb_irq_max,
 321 };
 322
 323 typedef struct MUSBState MUSBState;
 324 MUSBState *musb_init(qemu_irq *irqs);
 325 uint32_t musb_core_intr_get(MUSBState *s);
 326 void musb_core_intr_clear(MUSBState *s, uint32_t mask);
 327 void musb_set_size(MUSBState *s, int epnum, int size, int is_tx);
 328
 329 /* usb-bus.c */
 330
 331 struct USBBus {
 332     BusState qbus;
 333     USBBusOps *ops;
 334     int busnr;
 335     int nfree;
 336     int nused;
 337     QTAILQ_HEAD(, USBPort) free;
 338     QTAILQ_HEAD(, USBPort) used;
 339     QTAILQ_ENTRY(USBBus) next;
 340 };
 341
 342 struct USBBusOps {
 343     void (*device_destroy)(USBBus *bus, USBDevice *dev);
 344 };
 345
 346 void usb_bus_new(USBBus *bus, USBBusOps *ops, DeviceState *host);
 347 USBBus *usb_bus_find(int busnr);
 348 void usb_qdev_register(USBDeviceInfo *info);
 349 void usb_qdev_register_many(USBDeviceInfo *info);
 350 USBDevice *usb_create(USBBus *bus, const char *name);
 351 USBDevice *usb_create_simple(USBBus *bus, const char *name);
 352 USBDevice *usbdevice_create(const char *cmdline);
 353 void usb_register_port(USBBus *bus, USBPort *port, void *opaque, int index,
 354                        USBPortOps *ops, int speedmask);
 355 void usb_port_location(USBPort *downstream, USBPort *upstream, int portnr);
 356 void usb_unregister_port(USBBus *bus, USBPort *port);
 357 int usb_device_attach(USBDevice *dev);
 358 int usb_device_detach(USBDevice *dev);
 359 int usb_device_delete_addr(int busnr, int addr);
 360
 361 static inline USBBus *usb_bus_from_device(USBDevice *d)
 362 {
 363     return DO_UPCAST(USBBus, qbus, d->qdev.parent_bus);
 364 }