From 7da0498e7f0eb022107811b9d41697298329f6b4 Mon Sep 17 00:00:00 2001 From: Arthur Jones Date: Sun, 6 Jan 2008 21:12:38 -0800 Subject: 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 Signed-off-by: Roland Dreier --- drivers/infiniband/hw/ipath/ipath_intr.c | 4 ++-- drivers/infiniband/hw/ipath/ipath_kernel.h | 8 ++++++++ 2 files changed, 10 insertions(+), 2 deletions(-) (limited to 'drivers/infiniband') diff --git a/drivers/infiniband/hw/ipath/ipath_intr.c b/drivers/infiniband/hw/ipath/ipath_intr.c index ddc0a19c5ee..92e58c92152 100644 --- a/drivers/infiniband/hw/ipath/ipath_intr.c +++ b/drivers/infiniband/hw/ipath/ipath_intr.c @@ -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++; diff --git a/drivers/infiniband/hw/ipath/ipath_kernel.h b/drivers/infiniband/hw/ipath/ipath_kernel.h index e07df006831..c4729042245 100644 --- a/drivers/infiniband/hw/ipath/ipath_kernel.h +++ b/drivers/infiniband/hw/ipath/ipath_kernel.h @@ -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. */ -- cgit v1.2.3-70-g09d2