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| author |   Stefan Roscher <ossrosch@linux.vnet.ibm.com> | 2008-07-14 23:48:47 -0700 |
|---|---|---|
| committer |   Roland Dreier <rolandd@cisco.com> | 2008-07-14 23:48:47 -0700 |
| commit | 6f7bc01a7382641c61ec036d68ff3a9140b48a1c (patch) | |
| tree | debf518649e7af08c42465f6683bc66322ba1554 /drivers/infiniband/hw/ehca/hcp_if.c | |
| parent | IB/ehca: Reject receive work requests if QP is in RESET state (diff) | |
| download | linux-dev-6f7bc01a7382641c61ec036d68ff3a9140b48a1c.tar.xz linux-dev-6f7bc01a7382641c61ec036d68ff3a9140b48a1c.zip | |
IB/ehca: In case of lost interrupts, trigger EOI to reenable interrupts
During corner case testing, we noticed that some versions of ehca do
not properly transition to interrupt done in special load situations.
This can be resolved by periodically triggering EOI through H_EOI, if
EQEs are pending.
Signed-off-by: Stefan Roscher <stefan.roscher@de.ibm.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ehca/hcp_if.c')
| -rw-r--r-- | drivers/infiniband/hw/ehca/hcp_if.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ehca/hcp_if.c b/drivers/infiniband/hw/ehca/hcp_if.c index 5245e13c3a30..415d3a465de6 100644 --- a/drivers/infiniband/hw/ehca/hcp_if.c +++ b/drivers/infiniband/hw/ehca/hcp_if.c @@ -933,3 +933,13 @@ u64 hipz_h_error_data(const struct ipz_adapter_handle adapter_handle, r_cb, 0, 0, 0, 0); } + +u64 hipz_h_eoi(int irq) +{ + unsigned long xirr; + + iosync(); + xirr = (0xffULL << 24) | irq; + + return plpar_hcall_norets(H_EOI, xirr); +} |