Use new pci interfaces to set read request tuning values
Untested because of lack of hardware.
Signed-off-by: Stephen Hemminger <[email protected]>
---
drivers/infiniband/hw/mthca/mthca_main.c | 38 +++++++------------------------
1 file changed, 9 insertions(+), 29 deletions(-)
--- pci-x.orig/drivers/infiniband/hw/mthca/mthca_main.c
+++ pci-x/drivers/infiniband/hw/mthca/mthca_main.c
@@ -100,45 +100,25 @@ static struct mthca_profile default_prof
static int mthca_tune_pci(struct mthca_dev *mdev)
{
- int cap;
- u16 val;
-
if (!tune_pci)
return 0;
/* First try to max out Read Byte Count */
- cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_PCIX);
- if (cap) {
- if (pci_read_config_word(mdev->pdev, cap + PCI_X_CMD, &val)) {
- mthca_err(mdev, "Couldn't read PCI-X command register, "
+ if (pci_find_capability(mdev->pdev, PCI_CAP_ID_PCIX)) {
+ if (pcix_set_mmrbc(mdev->pdev, 4096)) {
+ mthca_err(mdev, "Couldn't set PCI-X max read count, "
"aborting.\n");
return -ENODEV;
}
- val = (val & ~PCI_X_CMD_MAX_READ) | (3 << 2);
- if (pci_write_config_word(mdev->pdev, cap + PCI_X_CMD, val)) {
- mthca_err(mdev, "Couldn't write PCI-X command register, "
- "aborting.\n");
- return -ENODEV;
- }
- } else if (!(mdev->mthca_flags & MTHCA_FLAG_PCIE))
- mthca_info(mdev, "No PCI-X capability, not setting RBC.\n");
+ }
- cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_EXP);
- if (cap) {
- if (pci_read_config_word(mdev->pdev, cap + PCI_EXP_DEVCTL, &val)) {
- mthca_err(mdev, "Couldn't read PCI Express device control "
- "register, aborting.\n");
- return -ENODEV;
- }
- val = (val & ~PCI_EXP_DEVCTL_READRQ) | (5 << 12);
- if (pci_write_config_word(mdev->pdev, cap + PCI_EXP_DEVCTL, val)) {
- mthca_err(mdev, "Couldn't write PCI Express device control "
- "register, aborting.\n");
+ if (pci_find_capability(mdev->pdev, PCI_CAP_ID_EXP)) {
+ if (pcie_set_readrq(mdev->pdev, 4096)) {
+ mthca_err(mdev, "Couldn't write PCI Express read request, "
+ "aborting.\n");
return -ENODEV;
}
- } else if (mdev->mthca_flags & MTHCA_FLAG_PCIE)
- mthca_info(mdev, "No PCI Express capability, "
- "not setting Max Read Request Size.\n");
+ }
return 0;
}
--
-
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