diff options
| author | Michael J. Ruhl <michael.j.ruhl@intel.com> | 2018-08-15 23:04:04 -0700 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2018-09-01 08:13:38 -0400 |
| commit | 6eb4eb10fb0d14340956c05281b7e09d80902788 (patch) | |
| tree | 87369fd62f0ca8695b8839b5b3989375b6d87854 /drivers/infiniband/hw/hfi1/chip.c | |
| parent | 09e71899b9cf5ed7495118b3023db41575013fe2 (diff) | |
IB/hfi1: Make the MSIx resource allocation a bit more flexible
The current method of allocating MSIx resources is a bit cumbersome,
and not very easily added to.
Refactor and re-order the code paths into a more consistent interface.
Update the interface so that allocations are not order dependent.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Sadanand Warrier <sadanand.warrier@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/hfi1/chip.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/chip.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/hfi1/chip.c b/drivers/infiniband/hw/hfi1/chip.c index 6d81a955ef8e..8acbf8b0304f 100644 --- a/drivers/infiniband/hw/hfi1/chip.c +++ b/drivers/infiniband/hw/hfi1/chip.c @@ -13099,6 +13099,35 @@ void reset_interrupts(struct hfi1_devdata *dd) write_csr(dd, CCE_INT_MAP + (8 * i), 0); } +/** + * set_up_interrupts() - Initialize the IRQ resources and state + * @dd: valid devdata + * + */ +static int set_up_interrupts(struct hfi1_devdata *dd) +{ + int ret; + + /* mask all interrupts */ + set_intr_state(dd, 0); + /* clear all pending interrupts */ + clear_all_interrupts(dd); + + /* reset general handler mask, chip MSI-X mappings */ + reset_interrupts(dd); + + /* ask for MSI-X interrupts */ + ret = msix_initialize(dd); + if (ret) + return ret; + + ret = msix_request_irqs(dd); + if (ret) + msix_clean_up_interrupts(dd); + + return ret; +} + /* * Set up context values in dd. Sets: * @@ -14966,7 +14995,7 @@ bail_free_cntrs: free_cntrs(dd); bail_clear_intr: hfi1_comp_vectors_clean_up(dd); - hfi1_clean_up_interrupts(dd); + msix_clean_up_interrupts(dd); bail_cleanup: hfi1_pcie_ddcleanup(dd); bail_free: |