X-Git-Url: https://gerrit.fd.io/r/gitweb?p=deb_dpdk.git;a=blobdiff_plain;f=kernel%2Flinux%2Figb_uio%2Figb_uio.c;fp=lib%2Flibrte_eal%2Flinuxapp%2Figb_uio%2Figb_uio.c;h=3398eacd3fcc833367a6207862d2165f38c928bd;hp=4cae4dd271d7f856a8d0851faac6b3fe5161d150;hb=b63264c8342e6a1b6971c79550d2af2024b6a4de;hpb=ca33590b6af032bff57d9cc70455660466a654b2

diff --git a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c b/kernel/linux/igb_uio/igb_uio.c
similarity index 95%
rename from lib/librte_eal/linuxapp/igb_uio/igb_uio.c
rename to kernel/linux/igb_uio/igb_uio.c
index 4cae4dd2..3398eacd 100644
--- a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
+++ b/kernel/linux/igb_uio/igb_uio.c
@@ -30,6 +30,7 @@ struct rte_uio_pci_dev {
 	int refcnt;
 };
 
+static int wc_activate;
 static char *intr_mode;
 static enum rte_intr_mode igbuio_intr_mode_preferred = RTE_INTR_MODE_MSIX;
 /* sriov sysfs */
@@ -375,9 +376,13 @@ igbuio_pci_setup_iomem(struct pci_dev *dev, struct uio_info *info,
 	len = pci_resource_len(dev, pci_bar);
 	if (addr == 0 || len == 0)
 		return -1;
-	internal_addr = ioremap(addr, len);
-	if (internal_addr == NULL)
-		return -1;
+	if (wc_activate == 0) {
+		internal_addr = ioremap(addr, len);
+		if (internal_addr == NULL)
+			return -1;
+	} else {
+		internal_addr = NULL;
+	}
 	info->mem[n].name = name;
 	info->mem[n].addr = addr;
 	info->mem[n].internal_addr = internal_addr;
@@ -473,6 +478,13 @@ igbuio_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	void *map_addr;
 	int err;
 
+#ifdef HAVE_PCI_IS_BRIDGE_API
+	if (pci_is_bridge(dev)) {
+		dev_warn(&dev->dev, "Ignoring PCI bridge device\n");
+		return -ENODEV;
+	}
+#endif
+
 	udev = kzalloc(sizeof(struct rte_uio_pci_dev), GFP_KERNEL);
 	if (!udev)
 		return -ENOMEM;
@@ -614,6 +626,14 @@ igbuio_pci_init_module(void)
 {
 	int ret;
 
+	if (igbuio_kernel_is_locked_down()) {
+		pr_err("Not able to use module, kernel lock down is enabled\n");
+		return -EINVAL;
+	}
+
+	if (wc_activate != 0)
+		pr_info("wc_activate is set\n");
+
 	ret = igbuio_config_intr_mode(intr_mode);
 	if (ret < 0)
 		return ret;
@@ -638,6 +658,12 @@ MODULE_PARM_DESC(intr_mode,
 "    " RTE_INTR_MODE_LEGACY_NAME "     Use Legacy interrupt\n"
 "\n");
 
+module_param(wc_activate, int, 0);
+MODULE_PARM_DESC(wc_activate,
+"Activate support for write combining (WC) (default=0)\n"
+"    0 - disable\n"
+"    other - enable\n");
+
 MODULE_DESCRIPTION("UIO driver for Intel IGB PCI cards");
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Intel Corporation");