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IB/ipath: Add ipath_read_ireg() abstraction 

Different chips have different width interrupt status registers, so add
a flag and accessor function to decide which width register read to use.

Signed-off-by: Arthur Jones <arthur.jones@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Arthur Jones 2008-01-06 21:12:38 -08:00 committed by Roland Dreier
parent 4ea61b548b
commit 7da0498e7f
2 changed files with 10 additions and 2 deletions
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4
drivers/infiniband/hw/ipath/ipath_intr.c
View File

@ -883,7 +883,7 @@ static noinline void ipath_bad_intr(struct ipath_devdata *dd, u32 *unexpectp)
dd->ipath_f_free_irq(dd);
}
}
if (ipath_read_kreg32(dd, dd->ipath_kregs->kr_intmask)) {
if (ipath_read_ireg(dd, dd->ipath_kregs->kr_intmask)) {
ipath_dev_err(dd, "%u unexpected interrupts, "
"disabling interrupts completely\n",
*unexpectp);
@ -1034,7 +1034,7 @@ irqreturn_t ipath_intr(int irq, void *data)
goto bail;
}
istat = ipath_read_kreg32(dd, dd->ipath_kregs->kr_intstatus);
istat = ipath_read_ireg(dd, dd->ipath_kregs->kr_intstatus);
if (unlikely(!istat)) {
ipath_stats.sps_nullintr++;

8
drivers/infiniband/hw/ipath/ipath_kernel.h
View File

@ -753,6 +753,8 @@ int ipath_set_rx_pol_inv(struct ipath_devdata *dd, u8 new_pol_inv);
* are 64bit */
#define IPATH_32BITCOUNTERS 0x20000
/* can miss port0 rx interrupts */
/* Interrupt register is 64 bits */
#define IPATH_INTREG_64 0x40000
#define IPATH_DISABLED 0x80000 /* administratively disabled */
/* Use GPIO interrupts for new counters */
#define IPATH_GPIO_ERRINTRS 0x100000
@ -958,6 +960,12 @@ static inline u32 ipath_get_rcvhdrtail(const struct ipath_portdata *pd)
pd->port_rcvhdrtail_kvaddr));
}
static inline u64 ipath_read_ireg(const struct ipath_devdata *dd, ipath_kreg r)
{
return (dd->ipath_flags & IPATH_INTREG_64) ?
ipath_read_kreg64(dd, r) : ipath_read_kreg32(dd, r);
}
/*
* sysfs interface.
*/