diff options
| author | Ralph Campbell <ralph.campbell@qlogic.com> | 2008-01-06 21:12:38 -0800 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2008-01-25 14:15:39 -0800 |
| commit | 4ea61b548bc93fb87cec6f52059851076e2ff54d (patch) | |
| tree | b48ddf0865c393b2245dbb131098901f6cc3f318 /drivers/infiniband/hw/ipath/ipath_driver.c | |
| parent | 60948a415859cb859e24f0dfe739069d66577466 (diff) | |
| download | lwn-4ea61b548bc93fb87cec6f52059851076e2ff54d.tar.gz lwn-4ea61b548bc93fb87cec6f52059851076e2ff54d.zip | |
IB/ipath: Add flag and handling for chips with swapped register bug
The 6110 had a bug that caused some registers to be swapped; it was
fixed for the 7220 (and didn't affect the 6120 because it had fewer
registers). This adds a flag and related code to handle that, and
includes some minor cleanups in the same area.
Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_driver.c')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_driver.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c index f130652cfaa3..5a9dc317f40a 100644 --- a/drivers/infiniband/hw/ipath/ipath_driver.c +++ b/drivers/infiniband/hw/ipath/ipath_driver.c @@ -1340,14 +1340,9 @@ static void ipath_update_pio_bufs(struct ipath_devdata *dd) /* * Chip Errata: bug 6641; even and odd qwords>3 are swapped */ - if (i > 3) { - if (i & 1) - piov = le64_to_cpu( - dd->ipath_pioavailregs_dma[i - 1]); - else - piov = le64_to_cpu( - dd->ipath_pioavailregs_dma[i + 1]); - } else + if (i > 3 && (dd->ipath_flags & IPATH_SWAP_PIOBUFS)) + piov = le64_to_cpu(dd->ipath_pioavailregs_dma[i ^ 1]); + else piov = le64_to_cpu(dd->ipath_pioavailregs_dma[i]); pchg = _IPATH_ALL_CHECKBITS & ~(dd->ipath_pioavailshadow[i] ^ piov); |