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) */
31typedef 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) */
39typedef 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) */
45typedef volatile struct {
46	uint32	fifocontrol;
47	uint32	fifodata;
48} pio4regs_t;
49
50/* a pair of pio channels(tx and rx) */
51typedef volatile struct {
52	pio4regs_t	tx;
53	pio4regs_t	rx;
54} pio4regp_t;
55
56#endif /* _sbhndpio_h_ */
57