File: [local] / sys / sys / msg.h (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:16:12 2008 UTC (16 years, 6 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
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/* $OpenBSD: msg.h,v 1.13 2004/07/15 11:24:46 millert Exp $ */
/* $NetBSD: msg.h,v 1.9 1996/02/09 18:25:18 christos Exp $ */
/*
* SVID compatible msg.h file
*
* Author: Daniel Boulet
*
* Copyright 1993 Daniel Boulet and RTMX Inc.
*
* This system call was implemented by Daniel Boulet under contract from RTMX.
*
* Redistribution and use in source forms, with and without modification,
* are permitted provided that this entire comment appears intact.
*
* Redistribution in binary form may occur without any restrictions.
* Obviously, it would be nice if you gave credit where credit is due
* but requiring it would be too onerous.
*
* This software is provided ``AS IS'' without any warranties of any kind.
*/
#ifndef _SYS_MSG_H_
#define _SYS_MSG_H_
#include <sys/ipc.h>
/*
* The MSG_NOERROR identifier value, the msqid_ds struct and the msg struct
* are as defined by the SV API Intel 386 Processor Supplement.
*/
#define MSG_NOERROR 010000 /* don't complain about too long msgs */
struct msqid_ds {
struct ipc_perm msg_perm; /* msg queue permission bits */
struct msg *msg_first; /* first message in the queue */
struct msg *msg_last; /* last message in the queue */
unsigned long msg_cbytes; /* number of bytes in use on the queue */
unsigned long msg_qnum; /* number of msgs in the queue */
unsigned long msg_qbytes; /* max # of bytes on the queue */
pid_t msg_lspid; /* pid of last msgsnd() */
pid_t msg_lrpid; /* pid of last msgrcv() */
time_t msg_stime; /* time of last msgsnd() */
long msg_pad1;
time_t msg_rtime; /* time of last msgrcv() */
long msg_pad2;
time_t msg_ctime; /* time of last msgctl() */
long msg_pad3;
long msg_pad4[4];
};
#ifdef _KERNEL
struct msqid_ds23 {
struct ipc_perm23 msg_perm; /* msg queue permission bits */
struct msg *msg_first; /* first message in the queue */
struct msg *msg_last; /* last message in the queue */
unsigned long msg_cbytes; /* number of bytes in use on the queue */
unsigned long msg_qnum; /* number of msgs in the queue */
unsigned long msg_qbytes; /* max # of bytes on the queue */
pid_t msg_lspid; /* pid of last msgsnd() */
pid_t msg_lrpid; /* pid of last msgrcv() */
time_t msg_stime; /* time of last msgsnd() */
long msg_pad1;
time_t msg_rtime; /* time of last msgrcv() */
long msg_pad2;
time_t msg_ctime; /* time of last msgctl() */
long msg_pad3;
long msg_pad4[4];
};
struct msqid_ds35 {
struct ipc_perm35 msg_perm; /* msg queue permission bits */
struct msg *msg_first; /* first message in the queue */
struct msg *msg_last; /* last message in the queue */
unsigned long msg_cbytes; /* number of bytes in use on queue */
unsigned long msg_qnum; /* number of msgs in the queue */
unsigned long msg_qbytes; /* max # of bytes on the queue */
pid_t msg_lspid; /* pid of last msgsnd() */
pid_t msg_lrpid; /* pid of last msgrcv() */
time_t msg_stime; /* time of last msgsnd() */
long msg_pad1;
time_t msg_rtime; /* time of last msgrcv() */
long msg_pad2;
time_t msg_ctime; /* time of last msgctl() */
long msg_pad3;
long msg_pad4[4];
};
#endif
struct msg {
struct msg *msg_next; /* next msg in the chain */
long msg_type; /* type of this message */
/* >0 -> type of this message */
/* 0 -> free header */
unsigned short msg_ts; /* size of this message */
short msg_spot; /* location of start of msg in buffer */
};
/*
* Structure describing a message. The SVID doesn't suggest any
* particular name for this structure. There is a reference in the
* msgop man page that reads "The structure mymsg is an example of what
* this user defined buffer might look like, and includes the following
* members:". This sentence is followed by two lines equivalent
* to the mtype and mtext field declarations below. It isn't clear
* if "mymsg" refers to the naem of the structure type or the name of an
* instance of the structure...
*/
struct mymsg {
long mtype; /* message type (+ve integer) */
char mtext[1]; /* message body */
};
#ifdef _KERNEL
/*
* Based on the configuration parameters described in an SVR2 (yes, two)
* config(1m) man page.
*
* Each message is broken up and stored in segments that are msgssz bytes
* long. For efficiency reasons, this should be a power of two. Also,
* it doesn't make sense if it is less than 8 or greater than about 256.
* Consequently, msginit in kern/sysv_msg.c checks that msgssz is a power of
* two between 8 and 1024 inclusive (and panic's if it isn't).
*/
struct msginfo {
int msgmax, /* max chars in a message */
msgmni, /* max message queue identifiers */
msgmnb, /* max chars in a queue */
msgtql, /* max messages in system */
msgssz, /* size of a message segment (see notes above) */
msgseg; /* number of message segments */
};
#ifdef SYSVMSG
extern struct msginfo msginfo;
#endif
struct msg_sysctl_info {
struct msginfo msginfo;
struct msqid_ds msgids[1];
};
#ifndef MSGSSZ
#define MSGSSZ 8 /* Each segment must be 2^N long */
#endif
#ifndef MSGSEG
#define MSGSEG 2048 /* must be less than 32767 */
#endif
#undef MSGMAX /* ALWAYS compute MSGMAX! */
#define MSGMAX (MSGSSZ*MSGSEG)
#ifndef MSGMNB
#define MSGMNB 2048 /* max # of bytes in a queue */
#endif
#ifndef MSGMNI
#define MSGMNI 40
#endif
#ifndef MSGTQL
#define MSGTQL 40
#endif
/*
* macros to convert between msqid_ds's and msqid's.
* (specific to this implementation)
*/
#define MSQID(ix,ds) ((ix) & 0xffff | (((ds).msg_perm.seq << 16) & 0xffff0000))
#define MSQID_IX(id) ((id) & 0xffff)
#define MSQID_SEQ(id) (((id) >> 16) & 0xffff)
#endif
/*
* The rest of this file is specific to this particular implementation.
*/
#ifdef _KERNEL
/*
* Stuff allocated in machdep.h
*/
struct msgmap {
short next; /* next segment in buffer */
/* -1 -> available */
/* 0..(MSGSEG-1) -> index of next segment */
};
extern char *msgpool; /* MSGMAX byte long msg buffer pool */
extern struct msgmap *msgmaps; /* MSGSEG msgmap structures */
extern struct msg *msghdrs; /* MSGTQL msg headers */
extern struct msqid_ds *msqids; /* MSGMNI msqid_ds struct's */
#define MSG_LOCKED 01000 /* Is this msqid_ds locked? */
#endif
#ifndef _KERNEL
#include <sys/cdefs.h>
__BEGIN_DECLS
int msgctl(int, int, struct msqid_ds *);
int msgget(key_t, int);
int msgsnd(int, const void *, size_t, int);
int msgrcv(int, void *, size_t, long, int);
__END_DECLS
#else
struct proc;
void msginit(void);
int msgctl1(struct proc *, int, int, caddr_t,
int (*)(const void *, void *, size_t),
int (*)(const void *, void *, size_t));
#endif /* !_KERNEL */
#endif /* !_SYS_MSG_H_ */