1/* SPDX-License-Identifier: GPL-2.0
2 *
3 * include/asm-sh/snapgear.h
4 *
5 * Modified version of io_se.h for the snapgear-specific functions.
6 *
7 * IO functions for a SnapGear
8 */
9
10#ifndef _ASM_SH_IO_SNAPGEAR_H
11#define _ASM_SH_IO_SNAPGEAR_H
12
13#define __IO_PREFIX	snapgear
14#include <asm/io_generic.h>
15
16/*
17 * We need to remember what was written to the ioport as some bits
18 * are shared with other functions and you cannot read back what was
19 * written :-|
20 *
21 * Bit        Read                   Write
22 * -----------------------------------------------
23 * D0         DCD on ttySC1          power
24 * D1         Reset Switch           heatbeat
25 * D2         ttySC0 CTS (7100)      LAN
26 * D3         -                      WAN
27 * D4         ttySC0 DCD (7100)      CONSOLE
28 * D5         -                      ONLINE
29 * D6         -                      VPN
30 * D7         -                      DTR on ttySC1
31 * D8         -                      ttySC0 RTS (7100)
32 * D9         -                      ttySC0 DTR (7100)
33 * D10        -                      RTC SCLK
34 * D11        RTC DATA               RTC DATA
35 * D12        -                      RTS RESET
36 */
37
38#define SECUREEDGE_IOPORT_ADDR ((volatile short *) 0xb0000000)
39extern unsigned short secureedge5410_ioport;
40
41#define SECUREEDGE_WRITE_IOPORT(val, mask) (*SECUREEDGE_IOPORT_ADDR = \
42	 (secureedge5410_ioport = \
43			((secureedge5410_ioport & ~(mask)) | ((val) & (mask)))))
44#define SECUREEDGE_READ_IOPORT() \
45	 ((*SECUREEDGE_IOPORT_ADDR&0x0817) | (secureedge5410_ioport&~0x0817))
46
47#endif /* _ASM_SH_IO_SNAPGEAR_H */
48