[dpdk-dev] [PATCH 09/10] igb_uio: allow msi mode
Stephen Hemminger
stephen at networkplumber.org
Fri Jul 18 18:14:56 CEST 2014
Allows msi to be selected as a preferred mode.
Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
--- a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c 2014-07-18 08:47:24.713604900 -0700
+++ b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c 2014-07-18 08:47:24.709604886 -0700
@@ -646,7 +646,7 @@ fail_release_iomem:
igbuio_pci_release_iomem(&udev->info);
if (udev->mode == RTE_INTR_MODE_MSIX)
pci_disable_msix(udev->pdev);
- if (udev->mode == RTE_INTR_MODE_MSI)
+ else if (udev->mode == RTE_INTR_MODE_MSI)
pci_disable_msi(udev->pdev);
pci_release_regions(dev);
fail_disable:
@@ -661,6 +661,7 @@ static void
igbuio_pci_remove(struct pci_dev *dev)
{
struct uio_info *info = pci_get_drvdata(dev);
+ struct rte_uio_pci_dev *udev = igbuio_get_uio_pci_dev(info);
if (info->priv == NULL) {
pr_notice("Not igbuio device\n");
@@ -670,9 +671,10 @@ igbuio_pci_remove(struct pci_dev *dev)
sysfs_remove_group(&dev->dev.kobj, &dev_attr_grp);
uio_unregister_device(info);
igbuio_pci_release_iomem(info);
- if (((struct rte_uio_pci_dev *)info->priv)->mode ==
- RTE_INTR_MODE_MSIX)
+ if (udev->mode == RTE_INTR_MODE_MSIX)
pci_disable_msix(dev);
+ else if (udev->mode == RTE_INTR_MODE_MSI)
+ pci_disable_msi(dev);
pci_release_regions(dev);
pci_disable_device(dev);
pci_set_drvdata(dev, NULL);
@@ -690,6 +692,9 @@ igbuio_config_intr_mode(char *intr_str)
if (!strcmp(intr_str, RTE_INTR_MODE_MSIX_NAME)) {
igbuio_intr_mode_preferred = RTE_INTR_MODE_MSIX;
pr_info("Use MSIX interrupt\n");
+ } else if (!strcmp(intr_str, RTE_INTR_MODE_MSI_NAME)) {
+ igbuio_intr_mode_preferred = RTE_INTR_MODE_MSI;
+ pr_info("Use MSI interrupt\n");
} else if (!strcmp(intr_str, RTE_INTR_MODE_LEGACY_NAME)) {
igbuio_intr_mode_preferred = RTE_INTR_MODE_LEGACY;
pr_info("Use legacy interrupt\n");
@@ -733,6 +738,7 @@ module_param(intr_mode, charp, S_IRUGO);
MODULE_PARM_DESC(intr_mode,
"igb_uio interrupt mode (default=msix):\n"
" " RTE_INTR_MODE_MSIX_NAME " Use MSIX interrupt\n"
+" " RTE_INTR_MODE_MSI_NAME " Use MSI interrupt\n"
" " RTE_INTR_MODE_LEGACY_NAME " Use Legacy interrupt\n"
"\n");
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