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path: root/drivers/infiniband/hw/mthca/mthca_main.c
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Diffstat (limited to 'drivers/infiniband/hw/mthca/mthca_main.c')
-rw-r--r--drivers/infiniband/hw/mthca/mthca_main.c110
1 files changed, 54 insertions, 56 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_main.c b/drivers/infiniband/hw/mthca/mthca_main.c
index 76fed7545c53..60de6f93869e 100644
--- a/drivers/infiniband/hw/mthca/mthca_main.c
+++ b/drivers/infiniband/hw/mthca/mthca_main.c
@@ -61,7 +61,7 @@ MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0");
#ifdef CONFIG_PCI_MSI
-static int msi_x = 0;
+static int msi_x = 1;
module_param(msi_x, int, 0444);
MODULE_PARM_DESC(msi_x, "attempt to use MSI-X if nonzero");
@@ -137,40 +137,23 @@ static const char mthca_version[] __devinitdata =
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, "
- "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");
+ if (pci_find_capability(mdev->pdev, PCI_CAP_ID_PCIX)) {
+ if (pcix_set_mmrbc(mdev->pdev, pcix_get_max_mmrbc(mdev->pdev))) {
+ mthca_err(mdev, "Couldn't set PCI-X max read count, "
+ "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)
@@ -833,14 +816,19 @@ static int mthca_setup_hca(struct mthca_dev *dev)
err = mthca_NOP(dev, &status);
if (err || status) {
- mthca_err(dev, "NOP command failed to generate interrupt (IRQ %d), aborting.\n",
- dev->mthca_flags & MTHCA_FLAG_MSI_X ?
- dev->eq_table.eq[MTHCA_EQ_CMD].msi_x_vector :
- dev->pdev->irq);
- if (dev->mthca_flags & (MTHCA_FLAG_MSI | MTHCA_FLAG_MSI_X))
- mthca_err(dev, "Try again with MSI/MSI-X disabled.\n");
- else
+ if (dev->mthca_flags & (MTHCA_FLAG_MSI | MTHCA_FLAG_MSI_X)) {
+ mthca_warn(dev, "NOP command failed to generate interrupt "
+ "(IRQ %d).\n",
+ dev->mthca_flags & MTHCA_FLAG_MSI_X ?
+ dev->eq_table.eq[MTHCA_EQ_CMD].msi_x_vector :
+ dev->pdev->irq);
+ mthca_warn(dev, "Trying again with MSI/MSI-X disabled.\n");
+ } else {
+ mthca_err(dev, "NOP command failed to generate interrupt "
+ "(IRQ %d), aborting.\n",
+ dev->pdev->irq);
mthca_err(dev, "BIOS or ACPI interrupt routing problem?\n");
+ }
goto err_cmd_poll;
}
@@ -1115,24 +1103,6 @@ static int __mthca_init_one(struct pci_dev *pdev, int hca_type)
goto err_free_dev;
}
- if (msi_x && !mthca_enable_msi_x(mdev))
- mdev->mthca_flags |= MTHCA_FLAG_MSI_X;
- else if (msi) {
- static int warned;
-
- if (!warned) {
- printk(KERN_WARNING PFX "WARNING: MSI support will be "
- "removed from the ib_mthca driver in January 2008.\n");
- printk(KERN_WARNING " If you are using MSI and cannot "
- "switch to MSI-X, please tell "
- "<general@lists.openfabrics.org>.\n");
- ++warned;
- }
-
- if (!pci_enable_msi(pdev))
- mdev->mthca_flags |= MTHCA_FLAG_MSI;
- }
-
if (mthca_cmd_init(mdev)) {
mthca_err(mdev, "Failed to init command interface, aborting.\n");
goto err_free_dev;
@@ -1156,7 +1126,35 @@ static int __mthca_init_one(struct pci_dev *pdev, int hca_type)
mthca_warn(mdev, "If you have problems, try updating your HCA FW.\n");
}
+ if (msi_x && !mthca_enable_msi_x(mdev))
+ mdev->mthca_flags |= MTHCA_FLAG_MSI_X;
+ else if (msi) {
+ static int warned;
+
+ if (!warned) {
+ printk(KERN_WARNING PFX "WARNING: MSI support will be "
+ "removed from the ib_mthca driver in January 2008.\n");
+ printk(KERN_WARNING " If you are using MSI and cannot "
+ "switch to MSI-X, please tell "
+ "<general@lists.openfabrics.org>.\n");
+ ++warned;
+ }
+
+ if (!pci_enable_msi(pdev))
+ mdev->mthca_flags |= MTHCA_FLAG_MSI;
+ }
+
err = mthca_setup_hca(mdev);
+ if (err == -EBUSY && (mdev->mthca_flags & (MTHCA_FLAG_MSI | MTHCA_FLAG_MSI_X))) {
+ if (mdev->mthca_flags & MTHCA_FLAG_MSI_X)
+ pci_disable_msix(pdev);
+ if (mdev->mthca_flags & MTHCA_FLAG_MSI)
+ pci_disable_msi(pdev);
+ mdev->mthca_flags &= ~(MTHCA_FLAG_MSI_X | MTHCA_FLAG_MSI);
+
+ err = mthca_setup_hca(mdev);
+ }
+
if (err)
goto err_close;
@@ -1192,17 +1190,17 @@ err_cleanup:
mthca_cleanup_uar_table(mdev);
err_close:
+ if (mdev->mthca_flags & MTHCA_FLAG_MSI_X)
+ pci_disable_msix(pdev);
+ if (mdev->mthca_flags & MTHCA_FLAG_MSI)
+ pci_disable_msi(pdev);
+
mthca_close_hca(mdev);
err_cmd:
mthca_cmd_cleanup(mdev);
err_free_dev:
- if (mdev->mthca_flags & MTHCA_FLAG_MSI_X)
- pci_disable_msix(pdev);
- if (mdev->mthca_flags & MTHCA_FLAG_MSI)
- pci_disable_msi(pdev);
-
ib_dealloc_device(&mdev->ib_dev);
err_free_res:
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 22:53:13 +0000