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 #define USB_TOKEN_SETUP 0x2d
  30 #define USB_TOKEN_IN    0x69 /* device -> host */
  31 #define USB_TOKEN_OUT   0xe1 /* host -> device */
  32
  33 /* specific usb messages, also sent in the 'pid' parameter */
  34 #define USB_MSG_ATTACH   0x100
  35 #define USB_MSG_DETACH   0x101
  36 #define USB_MSG_RESET    0x102
  37
  38 #define USB_RET_NODEV  (-1)
  39 #define USB_RET_NAK    (-2)
  40 #define USB_RET_STALL  (-3)
  41 #define USB_RET_BABBLE (-4)
  42 #define USB_RET_ASYNC  (-5)
  43
  44 #define USB_SPEED_LOW   0
  45 #define USB_SPEED_FULL  1
  46 #define USB_SPEED_HIGH  2
  47
  48 #define USB_STATE_NOTATTACHED 0
  49 #define USB_STATE_ATTACHED    1
  50 //#define USB_STATE_POWERED     2
  51 #define USB_STATE_DEFAULT     3
  52 //#define USB_STATE_ADDRESS     4
  53 //#define       USB_STATE_CONFIGURED  5
  54 #define USB_STATE_SUSPENDED   6
  55
  56 #define USB_CLASS_AUDIO                 1
  57 #define USB_CLASS_COMM                  2
  58 #define USB_CLASS_HID                   3
  59 #define USB_CLASS_PHYSICAL              5
  60 #define USB_CLASS_STILL_IMAGE           6
  61 #define USB_CLASS_PRINTER               7
  62 #define USB_CLASS_MASS_STORAGE          8
  63 #define USB_CLASS_HUB                   9
  64 #define USB_CLASS_CDC_DATA              0x0a
  65 #define USB_CLASS_CSCID                 0x0b
  66 #define USB_CLASS_CONTENT_SEC           0x0d
  67 #define USB_CLASS_APP_SPEC              0xfe
  68 #define USB_CLASS_VENDOR_SPEC           0xff
  69
  70 #define USB_DIR_OUT                     0
  71 #define USB_DIR_IN                      0x80
  72
  73 #define USB_TYPE_MASK                   (0x03 << 5)
  74 #define USB_TYPE_STANDARD               (0x00 << 5)
  75 #define USB_TYPE_CLASS                  (0x01 << 5)
  76 #define USB_TYPE_VENDOR                 (0x02 << 5)
  77 #define USB_TYPE_RESERVED               (0x03 << 5)
  78
  79 #define USB_RECIP_MASK                  0x1f
  80 #define USB_RECIP_DEVICE                0x00
  81 #define USB_RECIP_INTERFACE             0x01
  82 #define USB_RECIP_ENDPOINT              0x02
  83 #define USB_RECIP_OTHER                 0x03
  84
  85 #define DeviceRequest ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8)
  86 #define DeviceOutRequest ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8)
  87 #define InterfaceRequest \
  88         ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
  89 #define InterfaceOutRequest \
  90         ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
  91 #define EndpointRequest ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT)<<8)
  92 #define EndpointOutRequest \
  93         ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT)<<8)
  94 #define ClassInterfaceRequest \
  95         ((USB_DIR_IN|USB_TYPE_CLASS|USB_RECIP_INTERFACE)<<8)
  96 #define ClassInterfaceOutRequest \
  97         ((USB_DIR_OUT|USB_TYPE_CLASS|USB_RECIP_INTERFACE)<<8)
  98
  99 #define USB_REQ_GET_STATUS              0x00
 100 #define USB_REQ_CLEAR_FEATURE           0x01
 101 #define USB_REQ_SET_FEATURE             0x03
 102 #define USB_REQ_SET_ADDRESS             0x05
 103 #define USB_REQ_GET_DESCRIPTOR          0x06
 104 #define USB_REQ_SET_DESCRIPTOR          0x07
 105 #define USB_REQ_GET_CONFIGURATION       0x08
 106 #define USB_REQ_SET_CONFIGURATION       0x09
 107 #define USB_REQ_GET_INTERFACE           0x0A
 108 #define USB_REQ_SET_INTERFACE           0x0B
 109 #define USB_REQ_SYNCH_FRAME             0x0C
 110
 111 #define USB_DEVICE_SELF_POWERED         0
 112 #define USB_DEVICE_REMOTE_WAKEUP        1
 113
 114 #define USB_DT_DEVICE                   0x01
 115 #define USB_DT_CONFIG                   0x02
 116 #define USB_DT_STRING                   0x03
 117 #define USB_DT_INTERFACE                0x04
 118 #define USB_DT_ENDPOINT                 0x05
 119
 120 #define USB_ENDPOINT_XFER_CONTROL       0
 121 #define USB_ENDPOINT_XFER_ISOC          1
 122 #define USB_ENDPOINT_XFER_BULK          2
 123 #define USB_ENDPOINT_XFER_INT           3
 124
 125 typedef struct USBBus USBBus;
 126 typedef struct USBPort USBPort;
 127 typedef struct USBDevice USBDevice;
 128 typedef struct USBDeviceInfo USBDeviceInfo;
 129 typedef struct USBPacket USBPacket;
 130
 131 /* definition of a USB device */
 132 struct USBDevice {
 133     DeviceState qdev;
 134     USBDeviceInfo *info;
 135     void *opaque;
 136
 137     int speed;
 138     uint8_t addr;
 139     char product_desc[32];
 140     int auto_attach;
 141     int attached;
 142
 143     int state;
 144     uint8_t setup_buf[8];
 145     uint8_t data_buf[1024];
 146     int remote_wakeup;
 147     int setup_state;
 148     int setup_len;
 149     int setup_index;
 150 };
 151
 152 struct USBDeviceInfo {
 153     DeviceInfo qdev;
 154     int (*init)(USBDevice *dev);
 155
 156     /*
 157      * Process USB packet.
 158      * Called by the HC (Host Controller).
 159      *
 160      * Returns length of the transaction
 161      * or one of the USB_RET_XXX codes.
 162      */
 163     int (*handle_packet)(USBDevice *dev, USBPacket *p);
 164
 165     /*
 166      * Called when device is destroyed.
 167      */
 168     void (*handle_destroy)(USBDevice *dev);
 169
 170     /*
 171      * Reset the device
 172      */
 173     void (*handle_reset)(USBDevice *dev);
 174
 175     /*
 176      * Process control request.
 177      * Called from handle_packet().
 178      *
 179      * Returns length or one of the USB_RET_ codes.
 180      */
 181     int (*handle_control)(USBDevice *dev, int request, int value,
 182                           int index, int length, uint8_t *data);
 183
 184     /*
 185      * Process data transfers (both BULK and ISOC).
 186      * Called from handle_packet().
 187      *
 188      * Returns length or one of the USB_RET_ codes.
 189      */
 190     int (*handle_data)(USBDevice *dev, USBPacket *p);
 191
 192     const char *product_desc;
 193
 194     /* handle legacy -usbdevice command line options */
 195     const char *usbdevice_name;
 196     USBDevice *(*usbdevice_init)(const char *params);
 197 };
 198
 199 typedef void (*usb_attachfn)(USBPort *port, USBDevice *dev);
 200
 201 /* USB port on which a device can be connected */
 202 struct USBPort {
 203     USBDevice *dev;
 204     usb_attachfn attach;
 205     void *opaque;
 206     USBDevice *pdev;
 207     int index; /* internal port index, may be used with the opaque */
 208     QTAILQ_ENTRY(USBPort) next;
 209 };
 210
 211 typedef void USBCallback(USBPacket * packet, void *opaque);
 212
 213 /* Structure used to hold information about an active USB packet.  */
 214 struct USBPacket {
 215     /* Data fields for use by the driver.  */
 216     int pid;
 217     uint8_t devaddr;
 218     uint8_t devep;
 219     uint8_t *data;
 220     int len;
 221     /* Internal use by the USB layer.  */
 222     USBCallback *complete_cb;
 223     void *complete_opaque;
 224     USBCallback *cancel_cb;
 225     void *cancel_opaque;
 226 };
 227
 228 /* Defer completion of a USB packet.  The hadle_packet routine should then
 229    return USB_RET_ASYNC.  Packets that complete immediately (before
 230    handle_packet returns) should not call this method.  */
 231 static inline void usb_defer_packet(USBPacket *p, USBCallback *cancel,
 232                                     void * opaque)
 233 {
 234     p->cancel_cb = cancel;
 235     p->cancel_opaque = opaque;
 236 }
 237
 238 /* Notify the controller that an async packet is complete.  This should only
 239    be called for packets previously deferred with usb_defer_packet, and
 240    should never be called from within handle_packet.  */
 241 static inline void usb_packet_complete(USBPacket *p)
 242 {
 243     p->complete_cb(p, p->complete_opaque);
 244 }
 245
 246 /* Cancel an active packet.  The packed must have been deferred with
 247    usb_defer_packet,  and not yet completed.  */
 248 static inline void usb_cancel_packet(USBPacket * p)
 249 {
 250     p->cancel_cb(p, p->cancel_opaque);
 251 }
 252
 253 void usb_attach(USBPort *port, USBDevice *dev);
 254 int usb_generic_handle_packet(USBDevice *s, USBPacket *p);
 255 int set_usb_string(uint8_t *buf, const char *str);
 256 void usb_send_msg(USBDevice *dev, int msg);
 257
 258 /* usb-linux.c */
 259 USBDevice *usb_host_device_open(const char *devname);
 260 int usb_host_device_close(const char *devname);
 261 void usb_host_info(Monitor *mon);
 262
 263 /* usb-hid.c */
 264 void usb_hid_datain_cb(USBDevice *dev, void *opaque, void (*datain)(void *));
 265
 266 /* usb-bt.c */
 267 USBDevice *usb_bt_init(HCIInfo *hci);
 268
 269 /* usb ports of the VM */
 270
 271 #define VM_USB_HUB_SIZE 8
 272
 273 /* usb-musb.c */
 274 enum musb_irq_source_e {
 275     musb_irq_suspend = 0,
 276     musb_irq_resume,
 277     musb_irq_rst_babble,
 278     musb_irq_sof,
 279     musb_irq_connect,
 280     musb_irq_disconnect,
 281     musb_irq_vbus_request,
 282     musb_irq_vbus_error,
 283     musb_irq_rx,
 284     musb_irq_tx,
 285     musb_set_vbus,
 286     musb_set_session,
 287     __musb_irq_max,
 288 };
 289
 290 typedef struct MUSBState MUSBState;
 291 MUSBState *musb_init(qemu_irq *irqs);
 292 uint32_t musb_core_intr_get(MUSBState *s);
 293 void musb_core_intr_clear(MUSBState *s, uint32_t mask);
 294 void musb_set_size(MUSBState *s, int epnum, int size, int is_tx);
 295
 296 /* usb-bus.c */
 297
 298 struct USBBus {
 299     BusState qbus;
 300     int busnr;
 301     int nfree;
 302     int nused;
 303     QTAILQ_HEAD(, USBPort) free;
 304     QTAILQ_HEAD(, USBPort) used;
 305     QTAILQ_ENTRY(USBBus) next;
 306 };
 307
 308 void usb_bus_new(USBBus *bus, DeviceState *host);
 309 USBBus *usb_bus_find(int busnr);
 310 void usb_qdev_register(USBDeviceInfo *info);
 311 void usb_qdev_register_many(USBDeviceInfo *info);
 312 USBDevice *usb_create(USBBus *bus, const char *name);
 313 USBDevice *usb_create_simple(USBBus *bus, const char *name);
 314 USBDevice *usbdevice_create(const char *cmdline);
 315 void usb_register_port(USBBus *bus, USBPort *port, void *opaque, int index,
 316                        USBDevice *pdev, usb_attachfn attach);
 317 void usb_unregister_port(USBBus *bus, USBPort *port);
 318 int usb_device_attach(USBDevice *dev);
 319 int usb_device_detach(USBDevice *dev);
 320 int usb_device_delete_addr(int busnr, int addr);
 321
 322 static inline USBBus *usb_bus_from_device(USBDevice *d)
 323 {
 324     return DO_UPCAST(USBBus, qbus, d->qdev.parent_bus);
 325 }