int
gsc_config(dev_t devno, int cmd, struct uio * uiop)
{
struct gsc_ddsinfo ddsinfo;
gsc_softc_t *sp;
int result, i, unit;
extern int nodev();
static struct devsw gsc_dsw = {
gsc_open, /* entry point for open routine */
gsc_close, /* entry point for close routine */
nodev, /* entry point for read routine */
nodev, /* entry point for write routine */
gsc_ioctl, /* entry point for ioctl routine */
nodev, /* entry point for strategy routine */
0, /* pointer to tty device structure */
nodev, /* entry point for select routine */
gsc_config, /* entry point for config routine */
nodev, /* entry point for print routine */
nodev, /* entry point for dump routine */
nodev, /* entry point for mpx routine */
nodev, /* entry point for revoke routine */
NULL, /* pointer to device specific data */
NULL, /* select pointer */
DEV_MPSAFE
};
if (lockl(&config_lock, LOCK_SHORT) != LOCK_SUCC) {
return (EINVAL);
}
unit = minor(devno);
if (unit < 0 || unit >= MAX_UNITS) {
Trace2(0, "%d: bad unit %d", __LINE__, unit);
result = EINVAL;
unlockl(&config_lock);
return (result);
}
switch (cmd) {
case CFG_INIT:
Trace2(2, "CFG_INIT: unit %d nunit %d\n", unit, nunits);
/*
* Initialize softinfo, first time around.
*/
if (nunits == 0) {
memset(softinfo, 0, sizeof (softinfo));
}
/*
* Copy in DDS information
*/
uiomove((caddr_t) &ddsinfo, sizeof ddsinfo, UIO_WRITE, uiop);
sp = &softinfo[unit];
if (sp->iscfg) {
Trace1(0, "CFG_INIT: unit %d already configd", unit);
result = EBUSY;
break;
}
lock_alloc(&sp->dd_lock, LOCK_ALLOC_PIN, DD_LOCK, -1);
lock_alloc(&sp->buf_lock, LOCK_ALLOC_PIN, DD_LOCK, -1);
simple_lock_init(&sp->dd_lock);
sp->dev = ddsinfo.busid;
sp->tgt = ddsinfo.target;
sp->lun = ddsinfo.lun;
sp->cbuf.index = sp->rbuf.index = unit;
/*
* If this is the first time through:
* Add entry to the device switch table to call this driver
* Pin driver code.
*/
if (nunits == 0) {
result = devswadd(devno, &gsc_dsw);
if (result != 0) {
Trace1(0, "CFG_INIT: devswadd result: %d", result);
break;
}
result = pincode((int (*) ()) gscdd_intr);
if (result) {
Trace1(0, "CFG_INIT: pincode result: %d", result);
devswdel(devno);
break;
}
}
sp->iscfg = 1;
result = gsopen(sp);
if (result) {
Trace2(0, "CFG_INIT: gsopen returns %d for unit %d", result, unit);
sp->iscfg = 0;
gsclose(sp, devno);
break;
}
if (nunits <= unit)
nunits = unit + 1;
sp->iscfg = 1;
break;
case CFG_TERM:
Trace1(2, "CFG_TERM unit %d", unit);
result = 0;
sp = &softinfo[unit];
if (sp->iscfg == 0) {
Trace1(0, "CFG_TERM: unit %d not already configd", unit);
result = ENXIO;
break;
} else if (sp->isopen) {
Trace1(0, "CFG_TERM: unit %d open", unit);
result = EBUSY;
break;
}
sp->iscfg = 0; /* block further actions */
gsclose(sp, devno);
break;
default:
result = EINVAL;
break;
}
unlockl(&config_lock);
return (result);
}
/*
* syscall - this is the VRMIX system call entry point.
*
* NOTE:
* THIS SHOULD BE CHANGED TO afs_syscall(), but requires
* all the user-level calls to `syscall' to change.
*/
syscall(syscall, p1, p2, p3, p4, p5, p6)
{
int rval1 = 0, code;
int monster;
int retval = 0;
#ifndef AFS_AIX41_ENV
extern lock_t kernel_lock;
monster = lockl(&kernel_lock, LOCK_SHORT);
#endif /* !AFS_AIX41_ENV */
AFS_STATCNT(syscall);
setuerror(0);
switch (syscall) {
case AFSCALL_CALL:
rval1 = afs_syscall_call(p1, p2, p3, p4, p5, p6);
break;
case AFSCALL_SETPAG:
AFS_GLOCK();
rval1 = afs_setpag();
AFS_GUNLOCK();
break;
case AFSCALL_PIOCTL:
AFS_GLOCK();
rval1 = afs_syscall_pioctl(p1, p2, p3, p4);
AFS_GUNLOCK();
break;
case AFSCALL_ICREATE:
rval1 = afs_syscall_icreate(p1, p2, p3, p4, p5, p6);
break;
case AFSCALL_IOPEN:
rval1 = afs_syscall_iopen(p1, p2, p3);
break;
case AFSCALL_IDEC:
rval1 = afs_syscall_iincdec(p1, p2, p3, -1);
break;
case AFSCALL_IINC:
rval1 = afs_syscall_iincdec(p1, p2, p3, 1);
break;
case AFSCALL_ICL:
AFS_GLOCK();
code = Afscall_icl(p1, p2, p3, p4, p5, &retval);
AFS_GUNLOCK();
if (!code)
rval1 = retval;
if (!rval1)
rval1 = code;
break;
default:
rval1 = EINVAL;
setuerror(EINVAL);
break;
}
out:
#ifndef AFS_AIX41_ENV
if (monster != LOCK_NEST)
unlockl(&kernel_lock);
#endif /* !AFS_AIX41_ENV */
return getuerror()? -1 : rval1;
}
