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/* $Id: sgiarcs.h,v 1.3 1999/02/25 20:55:08 tsbogend Exp $
*
* SGI ARCS firmware interface defines.
*
* Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
*/
#ifndef _ASM_SGIARCS_H
#define _ASM_SGIARCS_H
#include <asm/arc/types.h>
/* Various ARCS error codes. */
#define PROM_ESUCCESS 0x00
#define PROM_E2BIG 0x01
#define PROM_EACCESS 0x02
#define PROM_EAGAIN 0x03
#define PROM_EBADF 0x04
#define PROM_EBUSY 0x05
#define PROM_EFAULT 0x06
#define PROM_EINVAL 0x07
#define PROM_EIO 0x08
#define PROM_EISDIR 0x09
#define PROM_EMFILE 0x0a
#define PROM_EMLINK 0x0b
#define PROM_ENAMETOOLONG 0x0c
#define PROM_ENODEV 0x0d
#define PROM_ENOENT 0x0e
#define PROM_ENOEXEC 0x0f
#define PROM_ENOMEM 0x10
#define PROM_ENOSPC 0x11
#define PROM_ENOTDIR 0x12
#define PROM_ENOTTY 0x13
#define PROM_ENXIO 0x14
#define PROM_EROFS 0x15
/* SGI ARCS specific errno's. */
#define PROM_EADDRNOTAVAIL 0x1f
#define PROM_ETIMEDOUT 0x20
#define PROM_ECONNABORTED 0x21
#define PROM_ENOCONNECT 0x22
/* Device classes, types, and identifiers for prom
* device inventory queries.
*/
enum linux_devclass {
system, processor, cache, adapter, controller, peripheral, memory
};
enum linux_devtypes {
/* Generic stuff. */
Arc, Cpu, Fpu,
/* Primary insn and data caches. */
picache, pdcache,
/* Secondary insn, data, and combined caches. */
sicache, sdcache, sccache,
memdev, eisa_adapter, tc_adapter, scsi_adapter, dti_adapter,
multifunc_adapter, dsk_controller, tp_controller, cdrom_controller,
worm_controller, serial_controller, net_controller, disp_controller,
parallel_controller, ptr_controller, kbd_controller, audio_controller,
misc_controller, disk_peripheral, flpy_peripheral, tp_peripheral,
modem_peripheral, monitor_peripheral, printer_peripheral,
ptr_peripheral, kbd_peripheral, term_peripheral, line_peripheral,
net_peripheral, misc_peripheral, anon
};
enum linux_identifier {
bogus, ronly, removable, consin, consout, input, output
};
/* A prom device tree component. */
struct linux_component {
enum linux_devclass class; /* node class */
enum linux_devtypes type; /* node type */
enum linux_identifier iflags; /* node flags */
unsigned short vers; /* node version */
unsigned short rev; /* node revision */
unsigned long key; /* completely magic */
unsigned long amask; /* XXX affinity mask??? */
unsigned long cdsize; /* size of configuration data */
unsigned long ilen; /* length of string identifier */
char *iname; /* string identifier */
};
typedef struct linux_component pcomponent;
struct linux_sysid {
char vend[8], prod[8];
};
/* ARCS prom memory descriptors. */
enum arcs_memtypes {
arcs_eblock, /* exception block */
arcs_rvpage, /* ARCS romvec page */
arcs_fcontig, /* Contiguous and free */
arcs_free, /* Generic free memory */
arcs_bmem, /* Borken memory, don't use */
arcs_prog, /* A loaded program resides here */
arcs_atmp, /* ARCS temporary storage area, wish Sparc OpenBoot told this */
arcs_aperm, /* ARCS permanent storage... */
};
/* ARC has slightly different types than ARCS */
enum arc_memtypes {
arc_eblock, /* exception block */
arc_rvpage, /* romvec page */
arc_free, /* Generic free memory */
arc_bmem, /* Borken memory, don't use */
arc_prog, /* A loaded program resides here */
arc_atmp, /* temporary storage area */
arc_aperm, /* permanent storage */
arc_fcontig, /* Contiguous and free */
};
union linux_memtypes {
enum arcs_memtypes arcs;
enum arc_memtypes arc;
};
struct linux_mdesc {
union linux_memtypes type;
unsigned long base;
unsigned long pages;
};
/* Time of day descriptor. */
struct linux_tinfo {
unsigned short yr;
unsigned short mnth;
unsigned short day;
unsigned short hr;
unsigned short min;
unsigned short sec;
unsigned short msec;
};
/* ARCS virtual dirents. */
struct linux_vdirent {
unsigned long namelen;
unsigned char attr;
char fname[32]; /* XXX imperical, should be a define */
};
/* Other stuff for files. */
enum linux_omode {
rdonly, wronly, rdwr, wronly_creat, rdwr_creat,
wronly_ssede, rdwr_ssede, dirent, dirent_creat
};
enum linux_seekmode {
absolute, relative
};
enum linux_mountops {
media_load, media_unload
};
/* This prom has a bolixed design. */
struct linux_bigint {
#ifdef __MIPSEL__
unsigned long lo;
long hi;
#else /* !(__MIPSEL__) */
long hi;
unsigned long lo;
#endif
};
struct linux_finfo {
struct linux_bigint begin;
struct linux_bigint end;
struct linux_bigint cur;
enum linux_devtypes dtype;
unsigned long namelen;
unsigned char attr;
char name[32]; /* XXX imperical, should be define */
};
struct linux_romvec {
/* Load an executable image. */
long (*load)(char *file, unsigned long end,
unsigned long *start_pc,
unsigned long *end_addr);
/* Invoke a standalong image. */
long (*invoke)(unsigned long startpc, unsigned long sp,
long argc, char **argv, char **envp);
/* Load and begin execution of a standalong image. */
long (*exec)(char *file, long argc, char **argv, char **envp);
void (*halt)(void) __attribute__((noreturn)); /* Halt the machine. */
void (*pdown)(void) __attribute__((noreturn)); /* Power down the machine. */
void (*restart)(void) __attribute__((noreturn)); /* XXX soft reset??? */
void (*reboot)(void) __attribute__((noreturn)); /* Reboot the machine. */
void (*imode)(void) __attribute__((noreturn)); /* Enter PROM interactive mode. */
int _unused1; /* padding */
/* PROM device tree interface. */
pcomponent *(*next_component)(pcomponent *this);
pcomponent *(*child_component)(pcomponent *this);
pcomponent *(*parent_component)(pcomponent *this);
long (*component_data)(void *opaque_data, pcomponent *this);
pcomponent *(*child_add)(pcomponent *this,
pcomponent *tmp,
void *opaque_data);
long (*comp_del)(pcomponent *this);
pcomponent *(*component_by_path)(char *file);
/* Misc. stuff. */
long (*cfg_save)(void);
struct linux_sysid *(*get_sysid)(void);
/* Probing for memory. */
struct linux_mdesc *(*get_mdesc)(struct linux_mdesc *curr);
long _unused2; /* padding */
struct linux_tinfo *(*get_tinfo)(void);
unsigned long (*get_rtime)(void);
/* File type operations. */
long (*get_vdirent)(unsigned long fd, struct linux_vdirent *entry,
unsigned long num, unsigned long *count);
long (*open)(char *file, enum linux_omode mode, unsigned long *fd);
long (*close)(unsigned long fd);
long (*read)(unsigned long fd, void *buffer, unsigned long num,
unsigned long *count);
long (*get_rstatus)(unsigned long fd);
long (*write)(unsigned long fd, void *buffer, unsigned long num,
unsigned long *count);
long (*seek)(unsigned long fd, struct linux_bigint *offset,
enum linux_seekmode smode);
long (*mount)(char *file, enum linux_mountops op);
/* Dealing with firmware environment variables. */
PCHAR (*get_evar)(CHAR *name);
LONG (*set_evar)(PCHAR name, PCHAR value);
long (*get_finfo)(unsigned long fd, struct linux_finfo *buf);
long (*set_finfo)(unsigned long fd, unsigned long flags,
unsigned long mask);
/* Miscellaneous. */
void (*cache_flush)(void);
};
/* The SGI ARCS parameter block is in a fixed location for standalone
* programs to access PROM facilities easily.
*/
struct linux_promblock {
long magic; /* magic cookie */
#define PROMBLOCK_MAGIC 0x53435241
unsigned long len; /* length of parm block */
unsigned short ver; /* ARCS firmware version */
unsigned short rev; /* ARCS firmware revision */
long *rs_block; /* Restart block. */
long *dbg_block; /* Debug block. */
long *gevect; /* XXX General vector??? */
long *utlbvect; /* XXX UTLB vector??? */
unsigned long rveclen; /* Size of romvec struct. */
struct linux_romvec *romvec; /* Function interface. */
unsigned long pveclen; /* Length of private vector. */
long *pvector; /* Private vector. */
long adap_cnt; /* Adapter count. */
long adap_typ0; /* First adapter type. */
long adap_vcnt0; /* Adapter 0 vector count. */
long *adap_vector; /* Adapter 0 vector ptr. */
long adap_typ1; /* Second adapter type. */
long adap_vcnt1; /* Adapter 1 vector count. */
long *adap_vector1; /* Adapter 1 vector ptr. */
/* More adapter vectors go here... */
};
#define PROMBLOCK ((struct linux_promblock *)0xA0001000UL)
#define ROMVECTOR ((PROMBLOCK)->romvec)
/* Cache layout parameter block. */
union linux_cache_key {
struct param {
#ifdef __MIPSEL__
unsigned short size;
unsigned char lsize;
unsigned char bsize;
#else /* !(__MIPSEL__) */
unsigned char bsize;
unsigned char lsize;
unsigned short size;
#endif
} info;
unsigned long allinfo;
};
/* Configuration data. */
struct linux_cdata {
char *name;
int mlen;
enum linux_devtypes type;
};
/* Common SGI ARCS firmware file descriptors. */
#define SGIPROM_STDIN 0
#define SGIPROM_STDOUT 1
/* Common SGI ARCS firmware file types. */
#define SGIPROM_ROFILE 0x01 /* read-only file */
#define SGIPROM_HFILE 0x02 /* hidden file */
#define SGIPROM_SFILE 0x04 /* System file */
#define SGIPROM_AFILE 0x08 /* Archive file */
#define SGIPROM_DFILE 0x10 /* Directory file */
#define SGIPROM_DELFILE 0x20 /* Deleted file */
/* SGI ARCS boot record information. */
struct sgi_partition {
unsigned char flag;
#define SGIPART_UNUSED 0x00
#define SGIPART_ACTIVE 0x80
unsigned char shead, ssect, scyl; /* unused */
unsigned char systype; /* OS type, Irix or NT */
unsigned char ehead, esect, ecyl; /* unused */
unsigned char rsect0, rsect1, rsect2, rsect3;
unsigned char tsect0, tsect1, tsect2, tsect3;
};
#define SGIBBLOCK_MAGIC 0xaa55
#define SGIBBLOCK_MAXPART 0x0004
struct sgi_bootblock {
unsigned char _unused[446];
struct sgi_partition partitions[SGIBBLOCK_MAXPART];
unsigned short magic;
};
/* BIOS parameter block. */
struct sgi_bparm_block {
unsigned short bytes_sect; /* bytes per sector */
unsigned char sect_clust; /* sectors per cluster */
unsigned short sect_resv; /* reserved sectors */
unsigned char nfats; /* # of allocation tables */
unsigned short nroot_dirents; /* # of root directory entries */
unsigned short sect_volume; /* sectors in volume */
unsigned char media_type; /* media descriptor */
unsigned short sect_fat; /* sectors per allocation table */
unsigned short sect_track; /* sectors per track */
unsigned short nheads; /* # of heads */
unsigned short nhsects; /* # of hidden sectors */
};
struct sgi_bsector {
unsigned char jmpinfo[3];
unsigned char manuf_name[8];
struct sgi_bparm_block info;
};
/* Debugging block used with SGI symmon symbolic debugger. */
#define SMB_DEBUG_MAGIC 0xfeeddead
struct linux_smonblock {
unsigned long magic;
void (*handler)(void); /* Breakpoint routine. */
unsigned long dtable_base; /* Base addr of dbg table. */
int (*printf)(const char *fmt, ...);
unsigned long btable_base; /* Breakpoint table. */
unsigned long mpflushreqs; /* SMP cache flush request list. */
unsigned long ntab; /* Name table. */
unsigned long stab; /* Symbol table. */
int smax; /* Max # of symbols. */
};
#endif /* _ASM_SGIARCS_H */
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