X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_eal%2Flinuxapp%2Figb_uio%2Figb_uio.c;h=6fa73966e1fc27bc366cfa81d054332cd44bf74e;hb=3031749c2df04a63cdcef186dcce3781e61436e8;hp=ccf4f619cd5ec50c52745828ab7ea5980af83cad;hpb=1c1d4d7a923d4804f1926fc5264f9ecdd8977b04;p=dpdk.git

diff --git a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
index ccf4f619cd..6fa73966e1 100644
--- a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
+++ b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
@@ -1,23 +1,23 @@
 /*-
  * GPL LICENSE SUMMARY
- * 
- *   Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
- * 
+ *
+ *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *
  *   This program is free software; you can redistribute it and/or modify
  *   it under the terms of version 2 of the GNU General Public License as
  *   published by the Free Software Foundation.
- * 
+ *
  *   This program is distributed in the hope that it will be useful, but
  *   WITHOUT ANY WARRANTY; without even the implied warranty of
  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  *   General Public License for more details.
- * 
+ *
  *   You should have received a copy of the GNU General Public License
  *   along with this program; if not, write to the Free Software
  *   Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  *   The full GNU General Public License is included in this distribution
  *   in the file called LICENSE.GPL.
- * 
+ *
  *   Contact Information:
  *   Intel Corporation
  */
@@ -30,6 +30,10 @@
 #include <linux/msi.h>
 #include <linux/version.h>
 
+#ifdef CONFIG_XEN_DOM0
+#include <xen/xen.h>
+#endif
+
 /**
  * MSI-X related macros, copy from linux/pci_regs.h in kernel 2.6.39,
  * but none of them in kernel 2.6.35.
@@ -75,6 +79,12 @@ static struct pci_device_id igbuio_pci_ids[] = {
 #define RTE_PCI_DEV_ID_DECL_IGBVF(vend, dev) {PCI_DEVICE(vend, dev)},
 #define RTE_PCI_DEV_ID_DECL_IXGBE(vend, dev) {PCI_DEVICE(vend, dev)},
 #define RTE_PCI_DEV_ID_DECL_IXGBEVF(vend, dev) {PCI_DEVICE(vend, dev)},
+#ifdef RTE_LIBRTE_VIRTIO_PMD
+#define RTE_PCI_DEV_ID_DECL_VIRTIO(vend, dev) {PCI_DEVICE(vend, dev)},
+#endif
+#ifdef RTE_LIBRTE_VMXNET3_PMD
+#define RTE_PCI_DEV_ID_DECL_VMXNET3(vend, dev) {PCI_DEVICE(vend, dev)},
+#endif
 #include <rte_pci_dev_ids.h>
 { 0, },
 };
@@ -103,7 +113,7 @@ int local_pci_num_vf(struct pci_dev *dev)
 
 	if (!dev->is_physfn)
 		return 0;
-	
+
 	return iov->nr_virtfn;
 #else
 	return pci_num_vf(dev);
@@ -136,7 +146,7 @@ store_max_vfs(struct device *dev, struct device_attribute *attr,
 	else /* do nothing if change max_vfs number */
 		err = -EINVAL;
 
-	return err ? err : count;							
+	return err ? err : count;
 }
 
 static DEVICE_ATTR(max_vfs, S_IRUGO | S_IWUSR, show_max_vfs, store_max_vfs);
@@ -311,6 +321,48 @@ spin_unlock:
 	return ret;
 }
 
+#ifdef CONFIG_XEN_DOM0
+static int
+igbuio_dom0_mmap_phys(struct uio_info *info, struct vm_area_struct *vma)
+{
+	int idx;
+	idx = (int)vma->vm_pgoff;
+	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+	vma->vm_page_prot.pgprot |= _PAGE_IOMAP;
+
+	return remap_pfn_range(vma,
+			vma->vm_start,
+			info->mem[idx].addr >> PAGE_SHIFT,
+			vma->vm_end - vma->vm_start,
+			vma->vm_page_prot);
+}
+
+/**
+ * This is uio device mmap method which will use igbuio mmap for Xen
+ * Dom0 environment.
+ */
+static int
+igbuio_dom0_pci_mmap(struct uio_info *info, struct vm_area_struct *vma)
+{
+	int idx;
+
+	if (vma->vm_pgoff >= MAX_UIO_MAPS)
+		return -EINVAL;
+	if(info->mem[vma->vm_pgoff].size == 0)
+		return  -EINVAL;
+
+	idx = (int)vma->vm_pgoff;
+	switch (info->mem[idx].memtype) {
+	case UIO_MEM_PHYS:
+		return igbuio_dom0_mmap_phys(info, vma);
+	case UIO_MEM_LOGICAL:
+	case UIO_MEM_VIRTUAL:
+	default:
+		return -EINVAL;
+	}
+}
+#endif
+
 /* Remap pci resources described by bar #pci_bar in uio resource n. */
 static int
 igbuio_pci_setup_iomem(struct pci_dev *dev, struct uio_info *info,
@@ -319,7 +371,7 @@ igbuio_pci_setup_iomem(struct pci_dev *dev, struct uio_info *info,
 	unsigned long addr, len;
 	void *internal_addr;
 
-	if (sizeof(info->mem) / sizeof (info->mem[0]) <= n)  
+	if (sizeof(info->mem) / sizeof (info->mem[0]) <= n)
 		return (EINVAL);
 
 	addr = pci_resource_start(dev, pci_bar);
@@ -344,7 +396,7 @@ igbuio_pci_setup_ioport(struct pci_dev *dev, struct uio_info *info,
 {
 	unsigned long addr, len;
 
-	if (sizeof(info->port) / sizeof (info->port[0]) <= n)  
+	if (sizeof(info->port) / sizeof (info->port[0]) <= n)
 		return (EINVAL);
 
 	addr = pci_resource_start(dev, pci_bar);
@@ -461,6 +513,11 @@ igbuio_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	udev->info.version = "0.1";
 	udev->info.handler = igbuio_pci_irqhandler;
 	udev->info.irqcontrol = igbuio_pci_irqcontrol;
+#ifdef CONFIG_XEN_DOM0
+	/* check if the driver run on Xen Dom0 */
+	if (xen_initial_domain())
+		udev->info.mmap = igbuio_dom0_pci_mmap;
+#endif
 	udev->info.priv = udev;
 	udev->pdev = dev;
 	udev->mode = 0; /* set the default value for interrupt mode */