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 Ralf Baechle 7 * Copyright (C) 2000 Silicon Graphics, Inc. 8 */ 9#ifndef _ASM_SN_IO_H 10#define _ASM_SN_IO_H 11 12#include <linux/config.h> 13 14#if !defined(CONFIG_SGI_IO) 15#include <asm/sn/sn0/addrs.h> 16 17#define IO_SPACE_BASE IO_BASE 18 19/* Because we only have PCI I/O ports. */ 20#define IO_SPACE_LIMIT 0xffffffff 21 22/* No isa_* versions, the Origin doesn't have ISA / EISA bridges. */ 23 24#else /* CONFIG_SGI_IO */ 25 26#define IIO_ITTE_BASE 0x400160 /* base of translation table entries */ 27#define IIO_ITTE(bigwin) (IIO_ITTE_BASE + 8*(bigwin)) 28 29#define IIO_ITTE_OFFSET_BITS 5 /* size of offset field */ 30#define IIO_ITTE_OFFSET_MASK ((1<<IIO_ITTE_OFFSET_BITS)-1) 31#define IIO_ITTE_OFFSET_SHIFT 0 32 33#define IIO_ITTE_WIDGET_BITS 4 /* size of widget field */ 34#define IIO_ITTE_WIDGET_MASK ((1<<IIO_ITTE_WIDGET_BITS)-1) 35#define IIO_ITTE_WIDGET_SHIFT 8 36 37#define IIO_ITTE_IOSP 1 /* I/O Space bit */ 38#define IIO_ITTE_IOSP_MASK 1 39#define IIO_ITTE_IOSP_SHIFT 12 40#define HUB_PIO_MAP_TO_MEM 0 41#define HUB_PIO_MAP_TO_IO 1 42 43#define IIO_ITTE_INVALID_WIDGET 3 /* an invalid widget */ 44 45#define IIO_ITTE_PUT(nasid, bigwin, io_or_mem, widget, addr) \ 46 REMOTE_HUB_S((nasid), IIO_ITTE(bigwin), \ 47 (((((addr) >> BWIN_SIZE_BITS) & \ 48 IIO_ITTE_OFFSET_MASK) << IIO_ITTE_OFFSET_SHIFT) | \ 49 (io_or_mem << IIO_ITTE_IOSP_SHIFT) | \ 50 (((widget) & IIO_ITTE_WIDGET_MASK) << IIO_ITTE_WIDGET_SHIFT))) 51 52#define IIO_ITTE_DISABLE(nasid, bigwin) \ 53 IIO_ITTE_PUT((nasid), HUB_PIO_MAP_TO_MEM, \ 54 (bigwin), IIO_ITTE_INVALID_WIDGET, 0) 55 56#define IIO_ITTE_GET(nasid, bigwin) REMOTE_HUB_ADDR((nasid), IIO_ITTE(bigwin)) 57 58/* 59 * Macro which takes the widget number, and returns the 60 * IO PRB address of that widget. 61 * value _x is expected to be a widget number in the range 62 * 0, 8 - 0xF 63 */ 64#define IIO_IOPRB(_x) (IIO_IOPRB_0 + ( ( (_x) < HUB_WIDGET_ID_MIN ? \ 65 (_x) : \ 66 (_x) - (HUB_WIDGET_ID_MIN-1)) << 3) ) 67 68#if defined(CONFIG_SGI_IP27) 69#include <asm/sn/sn0/hubio.h> 70#endif 71 72#endif /* CONFIG_SGI_IO */ 73 74#endif /* _ASM_SN_IO_H */ 75