diff options
| author | Ralph Campbell <ralph.campbell@qlogic.com> | 2008-04-16 21:09:26 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2008-04-16 21:09:26 -0700 |
| commit | c4b4d16e090e1b68d1d4d20a28757070982b9725 (patch) | |
| tree | 4ccc895d5effc5789d7e81182cc4ac76cb6f2c74 /drivers/infiniband/hw/ipath/ipath_intr.c | |
| parent | 4330e4dad780467d930b394b5119c0218a1e2dbe (diff) | |
IB/ipath: Make send buffers available for kernel if not allocated to user
A fixed partitioning of send buffers is determined at driver load time
for user processes and kernel use. Since send buffers are a scarce
resource, it makes sense to allow the kernel to use the buffers if they
are not in use by a user process.
Also, eliminate code duplication for ipath_force_pio_avail_update().
Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_intr.c')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_intr.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_intr.c b/drivers/infiniband/hw/ipath/ipath_intr.c index 5608e3268a62..d1e13a46093d 100644 --- a/drivers/infiniband/hw/ipath/ipath_intr.c +++ b/drivers/infiniband/hw/ipath/ipath_intr.c @@ -804,7 +804,6 @@ void ipath_clear_freeze(struct ipath_devdata *dd) { int i, im; u64 val; - unsigned long flags; /* disable error interrupts, to avoid confusion */ ipath_write_kreg(dd, dd->ipath_kregs->kr_errormask, 0ULL); @@ -823,14 +822,7 @@ void ipath_clear_freeze(struct ipath_devdata *dd) dd->ipath_control); /* ensure pio avail updates continue */ - spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, - dd->ipath_sendctrl & ~INFINIPATH_S_PIOBUFAVAILUPD); - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, - dd->ipath_sendctrl); - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); + ipath_force_pio_avail_update(dd); /* * We just enabled pioavailupdate, so dma copy is almost certainly @@ -842,7 +834,9 @@ void ipath_clear_freeze(struct ipath_devdata *dd) i ^ 1 : i; val = ipath_read_kreg64(dd, (0x1000 / sizeof(u64)) + im); dd->ipath_pioavailregs_dma[i] = cpu_to_le64(val); - dd->ipath_pioavailshadow[i] = val; + dd->ipath_pioavailshadow[i] = val | + (~dd->ipath_pioavailkernel[i] << + INFINIPATH_SENDPIOAVAIL_BUSY_SHIFT); } /* |