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)
41 extern 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