diff options
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_driver.c')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_driver.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c index bfcdf8c254c5..d5ff6ca2db30 100644 --- a/drivers/infiniband/hw/ipath/ipath_driver.c +++ b/drivers/infiniband/hw/ipath/ipath_driver.c @@ -334,6 +334,8 @@ static void ipath_verify_pioperf(struct ipath_devdata *dd) udelay(1); } + ipath_disable_armlaunch(dd); + writeq(0, piobuf); /* length 0, no dwords actually sent */ ipath_flush_wc(); @@ -365,6 +367,7 @@ static void ipath_verify_pioperf(struct ipath_devdata *dd) done: /* disarm piobuf, so it's available again */ ipath_disarm_piobufs(dd, pbnum, 1); + ipath_enable_armlaunch(dd); } static int __devinit ipath_init_one(struct pci_dev *pdev, @@ -2271,5 +2274,34 @@ int ipath_set_rx_pol_inv(struct ipath_devdata *dd, u8 new_pol_inv) } return 0; } + +/* + * Disable and enable the armlaunch error. Used for PIO bandwidth testing on + * the 7220, which is count-based, rather than trigger-based. Safe for the + * driver check, since it's at init. Not completely safe when used for + * user-mode checking, since some error checking can be lost, but not + * particularly risky, and only has problematic side-effects in the face of + * very buggy user code. There is no reference counting, but that's also + * fine, given the intended use. + */ +void ipath_enable_armlaunch(struct ipath_devdata *dd) +{ + dd->ipath_lasterror &= ~INFINIPATH_E_SPIOARMLAUNCH; + ipath_write_kreg(dd, dd->ipath_kregs->kr_errorclear, + INFINIPATH_E_SPIOARMLAUNCH); + dd->ipath_errormask |= INFINIPATH_E_SPIOARMLAUNCH; + ipath_write_kreg(dd, dd->ipath_kregs->kr_errormask, + dd->ipath_errormask); +} + +void ipath_disable_armlaunch(struct ipath_devdata *dd) +{ + /* so don't re-enable if already set */ + dd->ipath_maskederrs &= ~INFINIPATH_E_SPIOARMLAUNCH; + dd->ipath_errormask &= ~INFINIPATH_E_SPIOARMLAUNCH; + ipath_write_kreg(dd, dd->ipath_kregs->kr_errormask, + dd->ipath_errormask); +} + module_init(infinipath_init); module_exit(infinipath_cleanup); |