diff options
Diffstat (limited to 'include/asm-ia64/sn/pio.h')
| -rw-r--r-- | include/asm-ia64/sn/pio.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/include/asm-ia64/sn/pio.h b/include/asm-ia64/sn/pio.h new file mode 100644 index 000000000..72e2615d6 --- /dev/null +++ b/include/asm-ia64/sn/pio.h @@ -0,0 +1,155 @@ +/* $Id$ + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 1992 - 1997, 2000 Silicon Graphics, Inc. + * Copyright (C) 2000 by Colin Ngam + */ +#ifndef _ASM_SN_PIO_H +#define _ASM_SN_PIO_H + +#include <linux/types.h> +#include <asm/sn/sgi.h> +#include <asm/sn/iobus.h> + +/* + * pioaddr_t - The kernel virtual address that a PIO can be done upon. + * Should probably be (volatile void*) but EVEREST would do PIO + * to long mostly, just cast for other sizes. + */ + +typedef volatile ulong* pioaddr_t; + +/* + * iopaddr_t - the physical io space relative address (e.g. VME A16S 0x0800). + * iosapce_t - specifies the io address space to be mapped/accessed. + * piomap_t - the handle returned by pio_alloc() and used with all the pio + * access functions. + */ + + +typedef struct piomap { + uint pio_bus; + uint pio_adap; +#ifdef IRIX + iospace_t pio_iospace; +#endif + int pio_flag; + int pio_reg; + char pio_name[7]; /* to identify the mapped device */ + struct piomap *pio_next; /* dlist to link active piomap's */ + struct piomap *pio_prev; /* for debug and error reporting */ +#ifdef IRIX + void (*pio_errfunc)(); /* Pointer to an error function */ + /* Used only for piomaps allocated + * in user level vme driver */ +#endif + iopaddr_t pio_iopmask; /* valid iop address bit mask */ + iobush_t pio_bushandle; /* bus-level handle */ +} piomap_t; + + +/* Macro to get/set PIO error function */ +#define pio_seterrf(p,f) (p)->pio_errfunc = (f) +#define pio_geterrf(p) (p)->pio_errfunc + + +/* + * pio_mapalloc() - allocates a handle that specifies a mapping from kernel + * virtual to io space. The returned handle piomap is used + * with the access functions to make sure that the mapping + * to the iospace exists. + * pio_mapfree() - frees the mapping as specified in the piomap handle. + * pio_mapaddr() - returns the kv address that maps to piomap'ed io address. + */ +#ifdef IRIX +extern piomap_t *pio_mapalloc(uint,uint,iospace_t*,int,char*); +extern void pio_mapfree(piomap_t*); +extern caddr_t pio_mapaddr(piomap_t*,iopaddr_t); +extern piomap_t *pio_ioaddr(int, iobush_t, iopaddr_t, piomap_t *); + +/* + * PIO access functions. + */ +extern int pio_badaddr(piomap_t*,iopaddr_t,int); +extern int pio_badaddr_val(piomap_t*,iopaddr_t,int,void*); +extern int pio_wbadaddr(piomap_t*,iopaddr_t,int); +extern int pio_wbadaddr_val(piomap_t*,iopaddr_t,int,int); +extern int pio_bcopyin(piomap_t*,iopaddr_t,void *,int, int, int); +extern int pio_bcopyout(piomap_t*,iopaddr_t,void *,int, int, int); + + +/* + * PIO RMW functions using piomap. + */ +extern void pio_orb_rmw(piomap_t*, iopaddr_t, unsigned char); +extern void pio_orh_rmw(piomap_t*, iopaddr_t, unsigned short); +extern void pio_orw_rmw(piomap_t*, iopaddr_t, unsigned long); +extern void pio_andb_rmw(piomap_t*, iopaddr_t, unsigned char); +extern void pio_andh_rmw(piomap_t*, iopaddr_t, unsigned short); +extern void pio_andw_rmw(piomap_t*, iopaddr_t, unsigned long); + + +/* + * Old RMW function interface + */ +extern void orb_rmw(volatile void*, unsigned int); +extern void orh_rmw(volatile void*, unsigned int); +extern void orw_rmw(volatile void*, unsigned int); +extern void andb_rmw(volatile void*, unsigned int); +extern void andh_rmw(volatile void*, unsigned int); +extern void andw_rmw(volatile void*, unsigned int); +#endif /* IRIX */ + + +/* + * piomap_t type defines + */ + +#define PIOMAP_NTYPES 7 + +#define PIOMAP_A16N VME_A16NP +#define PIOMAP_A16S VME_A16S +#define PIOMAP_A24N VME_A24NP +#define PIOMAP_A24S VME_A24S +#define PIOMAP_A32N VME_A32NP +#define PIOMAP_A32S VME_A32S +#define PIOMAP_A64 6 + +#define PIOMAP_EISA_IO 0 +#define PIOMAP_EISA_MEM 1 + +#define PIOMAP_PCI_IO 0 +#define PIOMAP_PCI_MEM 1 +#define PIOMAP_PCI_CFG 2 +#define PIOMAP_PCI_ID 3 + +/* IBUS piomap types */ +#define PIOMAP_FCI 0 + +/* dang gio piomap types */ + +#define PIOMAP_GIO32 0 +#define PIOMAP_GIO64 1 + +#define ET_MEM 0 +#define ET_IO 1 +#define LAN_RAM 2 +#define LAN_IO 3 + +#define PIOREG_NULL -1 + +/* standard flags values for pio_map routines, + * including {xtalk,pciio}_piomap calls. + * NOTE: try to keep these in step with DMAMAP flags. + */ +#define PIOMAP_UNFIXED 0x0 +#define PIOMAP_FIXED 0x1 +#define PIOMAP_NOSLEEP 0x2 +#define PIOMAP_INPLACE 0x4 + +#define PIOMAP_FLAGS 0x7 + +#endif /* _ASM_SN_PIO_H */ |