include/linux/usb/wusb-wa.h

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Wireless USB Wire Adapter constants and structures.
   4  *
   5  * Copyright (C) 2005-2006 Intel Corporation.
   6  * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License version
  10  * 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  20  * 02110-1301, USA.
  21  *
  22  *
  23  * FIXME: docs
  24  * FIXME: organize properly, group logically
  25  *
  26  * All the event structures are defined in uwb/spec.h, as they are
  27  * common to the WHCI and WUSB radio control interfaces.
  28  *
  29  * References:
  30  *   [WUSB] Wireless Universal Serial Bus Specification, revision 1.0, ch8
  31  */
  32 #ifndef __LINUX_USB_WUSB_WA_H
  33 #define __LINUX_USB_WUSB_WA_H
  34
  35 /**
  36  * Radio Command Request for the Radio Control Interface
  37  *
  38  * Radio Control Interface command and event codes are the same as
  39  * WHCI, and listed in include/linux/uwb.h:UWB_RC_{CMD,EVT}_*
  40  */
  41 enum {
  42         WA_EXEC_RC_CMD = 40,    /* Radio Control command Request */
  43 };
  44
  45 /* Wireless Adapter Requests ([WUSB] table 8-51) */
  46 enum {
  47         WUSB_REQ_ADD_MMC_IE     = 20,
  48         WUSB_REQ_REMOVE_MMC_IE  = 21,
  49         WUSB_REQ_SET_NUM_DNTS   = 22,
  50         WUSB_REQ_SET_CLUSTER_ID = 23,
  51         WUSB_REQ_SET_DEV_INFO   = 24,
  52         WUSB_REQ_GET_TIME       = 25,
  53         WUSB_REQ_SET_STREAM_IDX = 26,
  54         WUSB_REQ_SET_WUSB_MAS   = 27,
  55         WUSB_REQ_CHAN_STOP      = 28,
  56 };
  57
  58
  59 /* Wireless Adapter WUSB Channel Time types ([WUSB] table 8-52) */
  60 enum {
  61         WUSB_TIME_ADJ   = 0,
  62         WUSB_TIME_BPST  = 1,
  63         WUSB_TIME_WUSB  = 2,
  64 };
  65
  66 enum {
  67         WA_ENABLE = 0x01,
  68         WA_RESET = 0x02,
  69         RPIPE_PAUSE = 0x1,
  70         RPIPE_STALL = 0x2,
  71 };
  72
  73 /* Responses from Get Status request ([WUSB] section 8.3.1.6) */
  74 enum {
  75         WA_STATUS_ENABLED = 0x01,
  76         WA_STATUS_RESETTING = 0x02
  77 };
  78
  79 enum rpipe_crs {
  80         RPIPE_CRS_CTL = 0x01,
  81         RPIPE_CRS_ISO = 0x02,
  82         RPIPE_CRS_BULK = 0x04,
  83         RPIPE_CRS_INTR = 0x08
  84 };
  85
  86 /**
  87  * RPipe descriptor ([WUSB] section 8.5.2.11)
  88  *
  89  * FIXME: explain rpipes
  90  */
  91 struct usb_rpipe_descriptor {
  92         u8      bLength;
  93         u8      bDescriptorType;
  94         __le16  wRPipeIndex;
  95         __le16  wRequests;
  96         __le16  wBlocks;                /* rw if 0 */
  97         __le16  wMaxPacketSize;         /* rw */
  98         union {
  99                 u8      dwa_bHSHubAddress;              /* rw: DWA. */
 100                 u8      hwa_bMaxBurst;                  /* rw: HWA. */
 101         };
 102         union {
 103                 u8      dwa_bHSHubPort;         /*  rw: DWA. */
 104                 u8      hwa_bDeviceInfoIndex;   /*  rw: HWA. */
 105         };
 106         u8      bSpeed;                 /* rw: xfer rate 'enum uwb_phy_rate' */
 107         union {
 108                 u8 dwa_bDeviceAddress;  /* rw: DWA Target device address. */
 109                 u8 hwa_reserved;                /* rw: HWA. */
 110         };
 111         u8      bEndpointAddress;       /* rw: Target EP address */
 112         u8      bDataSequence;          /* ro: Current Data sequence */
 113         __le32  dwCurrentWindow;        /* ro */
 114         u8      bMaxDataSequence;       /* ro?: max supported seq */
 115         u8      bInterval;              /* rw:  */
 116         u8      bOverTheAirInterval;    /* rw:  */
 117         u8      bmAttribute;            /* ro?  */
 118         u8      bmCharacteristics;      /* ro? enum rpipe_attr, supported xsactions */
 119         u8      bmRetryOptions;         /* rw? */
 120         __le16  wNumTransactionErrors;  /* rw */
 121 } __attribute__ ((packed));
 122
 123 /**
 124  * Wire Adapter Notification types ([WUSB] sections 8.4.5 & 8.5.4)
 125  *
 126  * These are the notifications coming on the notification endpoint of
 127  * an HWA and a DWA.
 128  */
 129 enum wa_notif_type {
 130         DWA_NOTIF_RWAKE = 0x91,
 131         DWA_NOTIF_PORTSTATUS = 0x92,
 132         WA_NOTIF_TRANSFER = 0x93,
 133         HWA_NOTIF_BPST_ADJ = 0x94,
 134         HWA_NOTIF_DN = 0x95,
 135 };
 136
 137 /**
 138  * Wire Adapter notification header
 139  *
 140  * Notifications coming from a wire adapter use a common header
 141  * defined in [WUSB] sections 8.4.5 & 8.5.4.
 142  */
 143 struct wa_notif_hdr {
 144         u8 bLength;
 145         u8 bNotifyType;                 /* enum wa_notif_type */
 146 } __packed;
 147
 148 /**
 149  * HWA DN Received notification [(WUSB] section 8.5.4.2)
 150  *
 151  * The DNData is specified in WUSB1.0[7.6]. For each device
 152  * notification we received, we just need to dispatch it.
 153  *
 154  * @dndata:  this is really an array of notifications, but all start
 155  *           with the same header.
 156  */
 157 struct hwa_notif_dn {
 158         struct wa_notif_hdr hdr;
 159         u8 bSourceDeviceAddr;           /* from errata 2005/07 */
 160         u8 bmAttributes;
 161         struct wusb_dn_hdr dndata[];
 162 } __packed;
 163
 164 /* [WUSB] section 8.3.3 */
 165 enum wa_xfer_type {
 166         WA_XFER_TYPE_CTL = 0x80,
 167         WA_XFER_TYPE_BI = 0x81,         /* bulk/interrupt */
 168         WA_XFER_TYPE_ISO = 0x82,
 169         WA_XFER_RESULT = 0x83,
 170         WA_XFER_ABORT = 0x84,
 171         WA_XFER_ISO_PACKET_INFO = 0xA0,
 172         WA_XFER_ISO_PACKET_STATUS = 0xA1,
 173 };
 174
 175 /* [WUSB] section 8.3.3 */
 176 struct wa_xfer_hdr {
 177         u8 bLength;                     /* 0x18 */
 178         u8 bRequestType;                /* 0x80 WA_REQUEST_TYPE_CTL */
 179         __le16 wRPipe;                  /* RPipe index */
 180         __le32 dwTransferID;            /* Host-assigned ID */
 181         __le32 dwTransferLength;        /* Length of data to xfer */
 182         u8 bTransferSegment;
 183 } __packed;
 184
 185 struct wa_xfer_ctl {
 186         struct wa_xfer_hdr hdr;
 187         u8 bmAttribute;
 188         __le16 wReserved;
 189         struct usb_ctrlrequest baSetupData;
 190 } __packed;
 191
 192 struct wa_xfer_bi {
 193         struct wa_xfer_hdr hdr;
 194         u8 bReserved;
 195         __le16 wReserved;
 196 } __packed;
 197
 198 /* [WUSB] section 8.5.5 */
 199 struct wa_xfer_hwaiso {
 200         struct wa_xfer_hdr hdr;
 201         u8 bReserved;
 202         __le16 wPresentationTime;
 203         __le32 dwNumOfPackets;
 204 } __packed;
 205
 206 struct wa_xfer_packet_info_hwaiso {
 207         __le16 wLength;
 208         u8 bPacketType;
 209         u8 bReserved;
 210         __le16 PacketLength[0];
 211 } __packed;
 212
 213 struct wa_xfer_packet_status_len_hwaiso {
 214         __le16 PacketLength;
 215         __le16 PacketStatus;
 216 } __packed;
 217
 218 struct wa_xfer_packet_status_hwaiso {
 219         __le16 wLength;
 220         u8 bPacketType;
 221         u8 bReserved;
 222         struct wa_xfer_packet_status_len_hwaiso PacketStatus[0];
 223 } __packed;
 224
 225 /* [WUSB] section 8.3.3.5 */
 226 struct wa_xfer_abort {
 227         u8 bLength;
 228         u8 bRequestType;
 229         __le16 wRPipe;                  /* RPipe index */
 230         __le32 dwTransferID;            /* Host-assigned ID */
 231 } __packed;
 232
 233 /**
 234  * WA Transfer Complete notification ([WUSB] section 8.3.3.3)
 235  *
 236  */
 237 struct wa_notif_xfer {
 238         struct wa_notif_hdr hdr;
 239         u8 bEndpoint;
 240         u8 Reserved;
 241 } __packed;
 242
 243 /** Transfer result basic codes [WUSB] table 8-15 */
 244 enum {
 245         WA_XFER_STATUS_SUCCESS,
 246         WA_XFER_STATUS_HALTED,
 247         WA_XFER_STATUS_DATA_BUFFER_ERROR,
 248         WA_XFER_STATUS_BABBLE,
 249         WA_XFER_RESERVED,
 250         WA_XFER_STATUS_NOT_FOUND,
 251         WA_XFER_STATUS_INSUFFICIENT_RESOURCE,
 252         WA_XFER_STATUS_TRANSACTION_ERROR,
 253         WA_XFER_STATUS_ABORTED,
 254         WA_XFER_STATUS_RPIPE_NOT_READY,
 255         WA_XFER_INVALID_FORMAT,
 256         WA_XFER_UNEXPECTED_SEGMENT_NUMBER,
 257         WA_XFER_STATUS_RPIPE_TYPE_MISMATCH,
 258 };
 259
 260 /** [WUSB] section 8.3.3.4 */
 261 struct wa_xfer_result {
 262         struct wa_notif_hdr hdr;
 263         __le32 dwTransferID;
 264         __le32 dwTransferLength;
 265         u8     bTransferSegment;
 266         u8     bTransferStatus;
 267         __le32 dwNumOfPackets;
 268 } __packed;
 269
 270 /**
 271  * Wire Adapter Class Descriptor ([WUSB] section 8.5.2.7).
 272  *
 273  * NOTE: u16 fields are read Little Endian from the hardware.
 274  *
 275  * @bNumPorts is the original max number of devices that the host can
 276  *            connect; we might chop this so the stack can handle
 277  *            it. In case you need to access it, use wusbhc->ports_max
 278  *            if it is a Wireless USB WA.
 279  */
 280 struct usb_wa_descriptor {
 281         u8      bLength;
 282         u8      bDescriptorType;
 283         __le16  bcdWAVersion;
 284         u8      bNumPorts;              /* don't use!! */
 285         u8      bmAttributes;           /* Reserved == 0 */
 286         __le16  wNumRPipes;
 287         __le16  wRPipeMaxBlock;
 288         u8      bRPipeBlockSize;
 289         u8      bPwrOn2PwrGood;
 290         u8      bNumMMCIEs;
 291         u8      DeviceRemovable;        /* FIXME: in DWA this is up to 16 bytes */
 292 } __packed;
 293
 294 /**
 295  * HWA Device Information Buffer (WUSB1.0[T8.54])
 296  */
 297 struct hwa_dev_info {
 298         u8      bmDeviceAvailability[32];       /* FIXME: ignored for now */
 299         u8      bDeviceAddress;
 300         __le16  wPHYRates;
 301         u8      bmDeviceAttribute;
 302 } __packed;
 303
 304 #endif /* #ifndef __LINUX_USB_WUSB_WA_H */