drivers/staging/brcm80211/brcmsmac/sbhndpio.h

   1 /*
   2  * Copyright (c) 2010 Broadcom Corporation
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #ifndef _sbhndpio_h_
  18 #define _sbhndpio_h_
  19
  20 /* PIO structure,
  21  *  support two PIO format: 2 bytes access and 4 bytes access
  22  *  basic FIFO register set is per channel(transmit or receive)
  23  *  a pair of channels is defined for convenience
  24  */
  25
  26 /* 2byte-wide pio register set per channel(xmt or rcv) */
  27 typedef volatile struct {
  28         u16 fifocontrol;
  29         u16 fifodata;
  30         u16 fifofree;   /* only valid in xmt channel, not in rcv channel */
  31         u16 PAD;
  32 } pio2regs_t;
  33
  34 /* a pair of pio channels(tx and rx) */
  35 typedef volatile struct {
  36         pio2regs_t tx;
  37         pio2regs_t rx;
  38 } pio2regp_t;
  39
  40 /* 4byte-wide pio register set per channel(xmt or rcv) */
  41 typedef volatile struct {
  42         u32 fifocontrol;
  43         u32 fifodata;
  44 } pio4regs_t;
  45
  46 /* a pair of pio channels(tx and rx) */
  47 typedef volatile struct {
  48         pio4regs_t tx;
  49         pio4regs_t rx;
  50 } pio4regp_t;
  51
  52 #endif                          /* _sbhndpio_h_ */