diff options
| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2016-04-29 23:25:24 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-05-01 18:32:13 +1000 |
| commit | 8ffb4103f5e28d7e7890ed4774d8e009f253f56e (patch) | |
| tree | ff1ac82b4edb32fbda14adae78a034f2240ee8bf /drivers/infiniband/hw/qib/qib_pcie.c | |
| parent | 5bcca743cb6e3ab97ff400ef92c7f57c787020f6 (diff) | |
IB/qib: Use cache inhibitted and guarded mapping on powerpc
The driver was requesting for a writethrough mapping. But with those
flags we will end up with an SAO mapping because we now have memory
conherence always enabled. ie, the existing mapping will end up with a
WIMG value 0b1110 which is Strong Access Order.
Update this to use cache inhibitted guarded mapping.
Cc: Doug Ledford <dledford@redhat.com>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Cc: linux-rdma@vger.kernel.org
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'drivers/infiniband/hw/qib/qib_pcie.c')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_pcie.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/drivers/infiniband/hw/qib/qib_pcie.c b/drivers/infiniband/hw/qib/qib_pcie.c index 4758a3801ae8..6abe1c621aa4 100644 --- a/drivers/infiniband/hw/qib/qib_pcie.c +++ b/drivers/infiniband/hw/qib/qib_pcie.c @@ -144,13 +144,7 @@ int qib_pcie_ddinit(struct qib_devdata *dd, struct pci_dev *pdev, addr = pci_resource_start(pdev, 0); len = pci_resource_len(pdev, 0); -#if defined(__powerpc__) - /* There isn't a generic way to specify writethrough mappings */ - dd->kregbase = __ioremap(addr, len, _PAGE_NO_CACHE | _PAGE_WRITETHRU); -#else dd->kregbase = ioremap_nocache(addr, len); -#endif - if (!dd->kregbase) return -ENOMEM; |