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 #define USB_TOKEN_SETUP 0x2d
  25 #define USB_TOKEN_IN    0x69 /* device -> host */
  26 #define USB_TOKEN_OUT   0xe1 /* host -> device */
  27
  28 /* specific usb messages, also sent in the 'pid' parameter */
  29 #define USB_MSG_ATTACH   0x100
  30 #define USB_MSG_DETACH   0x101
  31 #define USB_MSG_RESET    0x102
  32
  33 #define USB_RET_NODEV  (-1)
  34 #define USB_RET_NAK    (-2)
  35 #define USB_RET_STALL  (-3)
  36 #define USB_RET_BABBLE (-4)
  37 #define USB_RET_ASYNC  (-5)
  38
  39 #define USB_SPEED_LOW   0
  40 #define USB_SPEED_FULL  1
  41 #define USB_SPEED_HIGH  2
  42
  43 #define USB_STATE_NOTATTACHED 0
  44 #define USB_STATE_ATTACHED    1
  45 //#define USB_STATE_POWERED     2
  46 #define USB_STATE_DEFAULT     3
  47 //#define USB_STATE_ADDRESS     4
  48 //#define       USB_STATE_CONFIGURED  5
  49 #define USB_STATE_SUSPENDED   6
  50
  51 #define USB_CLASS_AUDIO                 1
  52 #define USB_CLASS_COMM                  2
  53 #define USB_CLASS_HID                   3
  54 #define USB_CLASS_PHYSICAL              5
  55 #define USB_CLASS_STILL_IMAGE           6
  56 #define USB_CLASS_PRINTER               7
  57 #define USB_CLASS_MASS_STORAGE          8
  58 #define USB_CLASS_HUB                   9
  59 #define USB_CLASS_CDC_DATA              0x0a
  60 #define USB_CLASS_CSCID                 0x0b
  61 #define USB_CLASS_CONTENT_SEC           0x0d
  62 #define USB_CLASS_APP_SPEC              0xfe
  63 #define USB_CLASS_VENDOR_SPEC           0xff
  64
  65 #define USB_DIR_OUT                     0
  66 #define USB_DIR_IN                      0x80
  67
  68 #define USB_TYPE_MASK                   (0x03 << 5)
  69 #define USB_TYPE_STANDARD               (0x00 << 5)
  70 #define USB_TYPE_CLASS                  (0x01 << 5)
  71 #define USB_TYPE_VENDOR                 (0x02 << 5)
  72 #define USB_TYPE_RESERVED               (0x03 << 5)
  73
  74 #define USB_RECIP_MASK                  0x1f
  75 #define USB_RECIP_DEVICE                0x00
  76 #define USB_RECIP_INTERFACE             0x01
  77 #define USB_RECIP_ENDPOINT              0x02
  78 #define USB_RECIP_OTHER                 0x03
  79
  80 #define DeviceRequest ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8)
  81 #define DeviceOutRequest ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8)
  82 #define InterfaceRequest \
  83         ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
  84 #define InterfaceOutRequest \
  85         ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
  86 #define EndpointRequest ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT)<<8)
  87 #define EndpointOutRequest \
  88         ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT)<<8)
  89
  90 #define USB_REQ_GET_STATUS              0x00
  91 #define USB_REQ_CLEAR_FEATURE           0x01
  92 #define USB_REQ_SET_FEATURE             0x03
  93 #define USB_REQ_SET_ADDRESS             0x05
  94 #define USB_REQ_GET_DESCRIPTOR          0x06
  95 #define USB_REQ_SET_DESCRIPTOR          0x07
  96 #define USB_REQ_GET_CONFIGURATION       0x08
  97 #define USB_REQ_SET_CONFIGURATION       0x09
  98 #define USB_REQ_GET_INTERFACE           0x0A
  99 #define USB_REQ_SET_INTERFACE           0x0B
 100 #define USB_REQ_SYNCH_FRAME             0x0C
 101
 102 #define USB_DEVICE_SELF_POWERED         0
 103 #define USB_DEVICE_REMOTE_WAKEUP        1
 104
 105 #define USB_DT_DEVICE                   0x01
 106 #define USB_DT_CONFIG                   0x02
 107 #define USB_DT_STRING                   0x03
 108 #define USB_DT_INTERFACE                0x04
 109 #define USB_DT_ENDPOINT                 0x05
 110
 111 typedef struct USBPort USBPort;
 112 typedef struct USBDevice USBDevice;
 113 typedef struct USBPacket USBPacket;
 114
 115 /* definition of a USB device */
 116 struct USBDevice {
 117     void *opaque;
 118     int (*handle_packet)(USBDevice *dev, USBPacket *p);
 119     void (*handle_destroy)(USBDevice *dev);
 120
 121     int speed;
 122
 123     /* The following fields are used by the generic USB device
 124        layer. They are here just to avoid creating a new structure for
 125        them. */
 126     void (*handle_reset)(USBDevice *dev);
 127     int (*handle_control)(USBDevice *dev, int request, int value,
 128                           int index, int length, uint8_t *data);
 129     int (*handle_data)(USBDevice *dev, USBPacket *p);
 130     uint8_t addr;
 131     char devname[32];
 132
 133     int state;
 134     uint8_t setup_buf[8];
 135     uint8_t data_buf[1024];
 136     int remote_wakeup;
 137     int setup_state;
 138     int setup_len;
 139     int setup_index;
 140 };
 141
 142 typedef void (*usb_attachfn)(USBPort *port, USBDevice *dev);
 143
 144 /* USB port on which a device can be connected */
 145 struct USBPort {
 146     USBDevice *dev;
 147     usb_attachfn attach;
 148     void *opaque;
 149     int index; /* internal port index, may be used with the opaque */
 150     struct USBPort *next; /* Used internally by qemu.  */
 151 };
 152
 153 typedef void USBCallback(USBPacket * packet, void *opaque);
 154
 155 /* Structure used to hold information about an active USB packet.  */
 156 struct USBPacket {
 157     /* Data fields for use by the driver.  */
 158     int pid;
 159     uint8_t devaddr;
 160     uint8_t devep;
 161     uint8_t *data;
 162     int len;
 163     /* Internal use by the USB layer.  */
 164     USBCallback *complete_cb;
 165     void *complete_opaque;
 166     USBCallback *cancel_cb;
 167     void * *cancel_opaque;
 168 };
 169
 170 /* Defer completion of a USB packet.  The hadle_packet routine should then
 171    return USB_RET_ASYNC.  Packets that complete immediately (before
 172    handle_packet returns) should not call this method.  */
 173 static inline void usb_defer_packet(USBPacket *p, USBCallback *cancel,
 174                                     void * opaque)
 175 {
 176     p->cancel_cb = cancel;
 177     p->cancel_opaque = opaque;
 178 }
 179
 180 /* Notify the controller that an async packet is complete.  This should only
 181    be called for packets previously deferred with usb_defer_packet, and
 182    should never be called from within handle_packet.  */
 183 static inline void usb_packet_complete(USBPacket *p)
 184 {
 185     p->complete_cb(p, p->complete_opaque);
 186 }
 187
 188 /* Cancel an active packet.  The packed must have been deferred with
 189    usb_defer_packet,  and not yet completed.  */
 190 static inline void usb_cancel_packet(USBPacket * p)
 191 {
 192     p->cancel_cb(p, p->cancel_opaque);
 193 }
 194
 195 void usb_attach(USBPort *port, USBDevice *dev);
 196 int usb_generic_handle_packet(USBDevice *s, USBPacket *p);
 197 int set_usb_string(uint8_t *buf, const char *str);
 198 void usb_send_msg(USBDevice *dev, int msg);
 199
 200 void usb_packet_complete(USBPacket *p);
 201
 202 /* usb hub */
 203 USBDevice *usb_hub_init(int nb_ports);
 204
 205 /* usb-uhci.c */
 206 void usb_uhci_init(PCIBus *bus, int devfn);
 207
 208 /* usb-ohci.c */
 209 void usb_ohci_init(struct PCIBus *bus, int num_ports, int devfn);
 210
 211 /* usb-linux.c */
 212 USBDevice *usb_host_device_open(const char *devname);
 213 void usb_host_info(void);
 214
 215 /* usb-hid.c */
 216 USBDevice *usb_mouse_init(void);
 217 USBDevice *usb_tablet_init(void);
 218
 219 /* usb-msd.c */
 220 USBDevice *usb_msd_init(const char *filename);