release/src-rt/include/sbhndpio.h

   1 /*
   2  * Generic Broadcom Home Networking Division (HND) PIO engine HW interface
   3  * This supports the following chips: BCM42xx, 44xx, 47xx .
   4  *
   5  * Copyright (C) 2010, Broadcom Corporation. All Rights Reserved.
   6  *
   7  * Permission to use, copy, modify, and/or distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice appear in all copies.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  14  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  16  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  17  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  18  * $Id: sbhndpio.h,v 13.2 2005-06-21 18:01:47 Exp $
  19  */
  20
  21 #ifndef _sbhndpio_h_
  22 #define _sbhndpio_h_
  23
  24 /* PIO structure,
  25  *  support two PIO format: 2 bytes access and 4 bytes access
  26  *  basic FIFO register set is per channel(transmit or receive)
  27  *  a pair of channels is defined for convenience
  28  */
  29
  30 /* 2byte-wide pio register set per channel(xmt or rcv) */
  31 typedef volatile struct {
  32         uint16  fifocontrol;
  33         uint16  fifodata;
  34         uint16  fifofree;       /* only valid in xmt channel, not in rcv channel */
  35         uint16  PAD;
  36 } pio2regs_t;
  37
  38 /* a pair of pio channels(tx and rx) */
  39 typedef volatile struct {
  40         pio2regs_t      tx;
  41         pio2regs_t      rx;
  42 } pio2regp_t;
  43
  44 /* 4byte-wide pio register set per channel(xmt or rcv) */
  45 typedef volatile struct {
  46         uint32  fifocontrol;
  47         uint32  fifodata;
  48 } pio4regs_t;
  49
  50 /* a pair of pio channels(tx and rx) */
  51 typedef volatile struct {
  52         pio4regs_t      tx;
  53         pio4regs_t      rx;
  54 } pio4regp_t;
  55
  56 #endif /* _sbhndpio_h_ */