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authorLuca Boccassi <luca.boccassi@gmail.com>2019-03-20 14:45:09 +0000
committerLuca Boccassi <luca.boccassi@gmail.com>2019-03-20 14:45:37 +0000
commitf7a9461e29147c47ce2bb81bd157ac1833cf5eb1 (patch)
tree6f3b4f4850cf9f116acc1dda3f0515259673e13b /lib/librte_eal/linuxapp/igb_uio
parent8e6d9d118f6105a3627b64a7949e1fb0b145879e (diff)
New upstream version 16.11.9upstream/16.11.9upstream-16.11-stable
Change-Id: Ia1ac246c53e5050b6a29d6952fb668ad6c782996 Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>
Diffstat (limited to 'lib/librte_eal/linuxapp/igb_uio')
-rw-r--r--lib/librte_eal/linuxapp/igb_uio/igb_uio.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
index 9f00f07a..59d6a093 100644
--- a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
+++ b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
@@ -170,6 +170,33 @@ igbuio_pci_irqhandler(int irq, struct uio_info *info)
return IRQ_HANDLED;
}
+/**
+ * This gets called while opening uio device file.
+ */
+static int
+igbuio_pci_open(struct uio_info *info, struct inode *inode)
+{
+ struct rte_uio_pci_dev *udev = info->priv;
+ struct pci_dev *dev = udev->pdev;
+
+ /* set bus master, which was cleared by the reset function */
+ pci_set_master(dev);
+
+ return 0;
+}
+
+static int
+igbuio_pci_release(struct uio_info *info, struct inode *inode)
+{
+ struct rte_uio_pci_dev *udev = info->priv;
+ struct pci_dev *dev = udev->pdev;
+
+ /* stop the device from further DMA */
+ pci_clear_master(dev);
+
+ return 0;
+}
+
#ifdef CONFIG_XEN_DOM0
static int
igbuio_dom0_mmap_phys(struct uio_info *info, struct vm_area_struct *vma)
@@ -370,6 +397,8 @@ 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;
+ udev->info.open = igbuio_pci_open;
+ udev->info.release = igbuio_pci_release;
#ifdef CONFIG_XEN_DOM0
/* check if the driver run on Xen Dom0 */
if (xen_initial_domain())
@@ -460,6 +489,8 @@ igbuio_pci_remove(struct pci_dev *dev)
{
struct rte_uio_pci_dev *udev = pci_get_drvdata(dev);
+ igbuio_pci_release(&udev->info, NULL);
+
sysfs_remove_group(&dev->dev.kobj, &dev_attr_grp);
uio_unregister_device(&udev->info);
igbuio_pci_release_iomem(&udev->info);