1/*
2 * include/asm-sh/snapgear.h
3 *
4 * Modified version of io_se.h for the snapgear-specific functions.
5 *
6 * May be copied or modified under the terms of the GNU General Public
7 * License.  See linux/COPYING for more information.
8 *
9 * IO functions for a SnapGear
10 */
11
12#ifndef _ASM_SH_IO_SNAPGEAR_H
13#define _ASM_SH_IO_SNAPGEAR_H
14
15#define __IO_PREFIX	snapgear
16#include <asm/io_generic.h>
17
18/*
19 * We need to remember what was written to the ioport as some bits
20 * are shared with other functions and you cannot read back what was
21 * written :-|
22 *
23 * Bit        Read                   Write
24 * -----------------------------------------------
25 * D0         DCD on ttySC1          power
26 * D1         Reset Switch           heatbeat
27 * D2         ttySC0 CTS (7100)      LAN
28 * D3         -                      WAN
29 * D4         ttySC0 DCD (7100)      CONSOLE
30 * D5         -                      ONLINE
31 * D6         -                      VPN
32 * D7         -                      DTR on ttySC1
33 * D8         -                      ttySC0 RTS (7100)
34 * D9         -                      ttySC0 DTR (7100)
35 * D10        -                      RTC SCLK
36 * D11        RTC DATA               RTC DATA
37 * D12        -                      RTS RESET
38 */
39
40#define SECUREEDGE_IOPORT_ADDR ((volatile short *) 0xb0000000)
41extern unsigned short secureedge5410_ioport;
42
43#define SECUREEDGE_WRITE_IOPORT(val, mask) (*SECUREEDGE_IOPORT_ADDR = \
44	 (secureedge5410_ioport = \
45			((secureedge5410_ioport & ~(mask)) | ((val) & (mask)))))
46#define SECUREEDGE_READ_IOPORT() \
47	 ((*SECUREEDGE_IOPORT_ADDR&0x0817) | (secureedge5410_ioport&~0x0817))
48
49#endif /* _ASM_SH_IO_SNAPGEAR_H */
50