io.h (1868B)
1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 2000, 2003 Ralf Baechle 7 * Copyright (C) 2000 Silicon Graphics, Inc. 8 */ 9#ifndef _ASM_SN_IO_H 10#define _ASM_SN_IO_H 11 12#if defined(CONFIG_SGI_IP27) 13#include <asm/sn/sn0/hubio.h> 14#endif 15 16 17#define IIO_ITTE_BASE 0x400160 /* base of translation table entries */ 18#define IIO_ITTE(bigwin) (IIO_ITTE_BASE + 8*(bigwin)) 19 20#define IIO_ITTE_OFFSET_BITS 5 /* size of offset field */ 21#define IIO_ITTE_OFFSET_MASK ((1<<IIO_ITTE_OFFSET_BITS)-1) 22#define IIO_ITTE_OFFSET_SHIFT 0 23 24#define IIO_ITTE_WIDGET_BITS 4 /* size of widget field */ 25#define IIO_ITTE_WIDGET_MASK ((1<<IIO_ITTE_WIDGET_BITS)-1) 26#define IIO_ITTE_WIDGET_SHIFT 8 27 28#define IIO_ITTE_IOSP 1 /* I/O Space bit */ 29#define IIO_ITTE_IOSP_MASK 1 30#define IIO_ITTE_IOSP_SHIFT 12 31#define HUB_PIO_MAP_TO_MEM 0 32#define HUB_PIO_MAP_TO_IO 1 33 34#define IIO_ITTE_INVALID_WIDGET 3 /* an invalid widget */ 35 36#define IIO_ITTE_PUT(nasid, bigwin, io_or_mem, widget, addr) \ 37 REMOTE_HUB_S((nasid), IIO_ITTE(bigwin), \ 38 (((((addr) >> BWIN_SIZE_BITS) & \ 39 IIO_ITTE_OFFSET_MASK) << IIO_ITTE_OFFSET_SHIFT) | \ 40 (io_or_mem << IIO_ITTE_IOSP_SHIFT) | \ 41 (((widget) & IIO_ITTE_WIDGET_MASK) << IIO_ITTE_WIDGET_SHIFT))) 42 43#define IIO_ITTE_DISABLE(nasid, bigwin) \ 44 IIO_ITTE_PUT((nasid), HUB_PIO_MAP_TO_MEM, \ 45 (bigwin), IIO_ITTE_INVALID_WIDGET, 0) 46 47#define IIO_ITTE_GET(nasid, bigwin) REMOTE_HUB_PTR((nasid), IIO_ITTE(bigwin)) 48 49/* 50 * Macro which takes the widget number, and returns the 51 * IO PRB address of that widget. 52 * value _x is expected to be a widget number in the range 53 * 0, 8 - 0xF 54 */ 55#define IIO_IOPRB(_x) (IIO_IOPRB_0 + ( ( (_x) < HUB_WIDGET_ID_MIN ? \ 56 (_x) : \ 57 (_x) - (HUB_WIDGET_ID_MIN-1)) << 3) ) 58 59#endif /* _ASM_SN_IO_H */