home *** CD-ROM | disk | FTP | other *** search
- /* $Id: sgiarcs.h,v 1.2 1998/07/08 16:01:57 ralf Exp $
- *
- * SGI ARCS firmware interface defines.
- *
- * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
- */
-
- #ifndef _MIPS_SGIARCS_H
- #define _MIPS_SGIARCS_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 linux_memtypes {
- eblock, /* exception block */
- rvpage, /* ARCS romvec page */
- fcontig, /* Contiguous and free */
- free, /* Generic free memory */
- bmem, /* Borken memory, don't use */
- prog, /* A loaded program resides here */
- atmp, /* ARCS temporary storage area, wish Sparc OpenBoot told this */
- aperm, /* ARCS permanent storage... */
- };
-
- struct linux_mdesc {
- enum 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. */
- char *(*get_evar)(char *name);
- long (*set_evar)(char *name, char *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 /* !(_MIPS_SGIARCS_H) */
-