int
cio_start_key (struct subchannel *sch, /* subchannel structure */
struct ccw1 * cpa, /* logical channel prog addr */
__u8 lpm, /* logical path mask */
__u8 key) /* storage key */
{
char dbf_txt[15];
int ccode;
union orb *orb;
CIO_TRACE_EVENT(4, "stIO");
CIO_TRACE_EVENT(4, dev_name(&sch->dev));
orb = &to_io_private(sch)->orb;
memset(orb, 0, sizeof(union orb));
/* sch is always under 2G. */
orb->cmd.intparm = (u32)(addr_t)sch;
orb->cmd.fmt = 1;
orb->cmd.pfch = sch->options.prefetch == 0;
orb->cmd.spnd = sch->options.suspend;
orb->cmd.ssic = sch->options.suspend && sch->options.inter;
orb->cmd.lpm = (lpm != 0) ? lpm : sch->lpm;
#ifdef CONFIG_64BIT
/*
* for 64 bit we always support 64 bit IDAWs with 4k page size only
*/
orb->cmd.c64 = 1;
orb->cmd.i2k = 0;
#endif
orb->cmd.key = key >> 4;
/* issue "Start Subchannel" */
orb->cmd.cpa = (__u32) __pa(cpa);
ccode = ssch(sch->schid, orb);
/* process condition code */
sprintf(dbf_txt, "ccode:%d", ccode);
CIO_TRACE_EVENT(4, dbf_txt);
switch (ccode) {
case 0:
/*
* initialize device status information
*/
sch->schib.scsw.cmd.actl |= SCSW_ACTL_START_PEND;
return 0;
case 1: /* status pending */
case 2: /* busy */
return -EBUSY;
case 3: /* device/path not operational */
return cio_start_handle_notoper(sch, lpm);
default:
return ccode;
}
}
int
cio_start_key (struct subchannel *sch, /* subchannel structure */
struct ccw1 * cpa, /* logical channel prog addr */
__u8 lpm, /* logical path mask */
__u8 key) /* storage key */
{
char dbf_txt[15];
int ccode;
CIO_TRACE_EVENT (4, "stIO");
CIO_TRACE_EVENT (4, sch->dev.bus_id);
/* sch is always under 2G. */
sch->orb.intparm = (__u32)(unsigned long)sch;
sch->orb.fmt = 1;
sch->orb.pfch = sch->options.prefetch == 0;
sch->orb.spnd = sch->options.suspend;
sch->orb.ssic = sch->options.suspend && sch->options.inter;
sch->orb.lpm = (lpm != 0) ? (lpm & sch->opm) : sch->lpm;
#ifdef CONFIG_ARCH_S390X
/*
* for 64 bit we always support 64 bit IDAWs with 4k page size only
*/
sch->orb.c64 = 1;
sch->orb.i2k = 0;
#endif
sch->orb.key = key >> 4;
/* issue "Start Subchannel" */
sch->orb.cpa = (__u32) __pa (cpa);
ccode = ssch (sch->irq, &sch->orb);
/* process condition code */
sprintf (dbf_txt, "ccode:%d", ccode);
CIO_TRACE_EVENT (4, dbf_txt);
switch (ccode) {
case 0:
/*
* initialize device status information
*/
sch->schib.scsw.actl |= SCSW_ACTL_START_PEND;
return 0;
case 1: /* status pending */
case 2: /* busy */
return -EBUSY;
default: /* device/path not operational */
return cio_start_handle_notoper(sch, lpm);
}
}
int
cio_start_key (struct subchannel *sch,
struct ccw1 * cpa,
__u8 lpm,
__u8 key)
{
struct io_subchannel_private *priv = to_io_private(sch);
union orb *orb = &priv->orb;
int ccode;
CIO_TRACE_EVENT(5, "stIO");
CIO_TRACE_EVENT(5, dev_name(&sch->dev));
memset(orb, 0, sizeof(union orb));
orb->cmd.intparm = (u32)(addr_t)sch;
orb->cmd.fmt = 1;
orb->cmd.pfch = priv->options.prefetch == 0;
orb->cmd.spnd = priv->options.suspend;
orb->cmd.ssic = priv->options.suspend && priv->options.inter;
orb->cmd.lpm = (lpm != 0) ? lpm : sch->lpm;
#ifdef CONFIG_64BIT
orb->cmd.c64 = 1;
orb->cmd.i2k = 0;
#endif
orb->cmd.key = key >> 4;
orb->cmd.cpa = (__u32) __pa(cpa);
ccode = ssch(sch->schid, orb);
CIO_HEX_EVENT(5, &ccode, sizeof(ccode));
switch (ccode) {
case 0:
sch->schib.scsw.cmd.actl |= SCSW_ACTL_START_PEND;
return 0;
case 1:
case 2:
return -EBUSY;
case 3:
return cio_start_handle_notoper(sch, lpm);
default:
return ccode;
}
}
/**
* cio_tm_start_key - perform start function
* @sch: subchannel on which to perform the start function
* @tcw: transport-command word to be started
* @lpm: mask of paths to use
* @key: storage key to use for storage access
*
* Start the tcw on the given subchannel. Return zero on success, non-zero
* otherwise.
*/
int cio_tm_start_key(struct subchannel *sch, struct tcw *tcw, u8 lpm, u8 key)
{
int cc;
union orb *orb = &to_io_private(sch)->orb;
memset(orb, 0, sizeof(union orb));
orb->tm.intparm = (u32) (addr_t) sch;
orb->tm.key = key >> 4;
orb->tm.b = 1;
orb->tm.lpm = lpm ? lpm : sch->lpm;
orb->tm.tcw = (u32) (addr_t) tcw;
cc = ssch(sch->schid, orb);
switch (cc) {
case 0:
return 0;
case 1:
case 2:
return -EBUSY;
default:
return cio_start_handle_notoper(sch, lpm);
}
}