-/**
- * 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;
-
- pci_reset_function(dev);
-
- /* 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);
-
- pci_reset_function(dev);
-
- return 0;
-}
-
-#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);
-#ifdef HAVE_PTE_MASK_PAGE_IOMAP
- vma->vm_page_prot.pgprot |= _PAGE_IOMAP;
-#endif
-
- 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,
- int n, int pci_bar, const char *name)
-{
- unsigned long addr, len;
- void *internal_addr;
-
- if (n >= ARRAY_SIZE(info->mem))
- return -EINVAL;
-
- addr = pci_resource_start(dev, pci_bar);
- 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;
- info->mem[n].name = name;
- info->mem[n].addr = addr;
- info->mem[n].internal_addr = internal_addr;
- info->mem[n].size = len;
- info->mem[n].memtype = UIO_MEM_PHYS;
- return 0;
-}
-
-/* Get pci port io resources described by bar #pci_bar in uio resource n. */
-static int
-igbuio_pci_setup_ioport(struct pci_dev *dev, struct uio_info *info,
- int n, int pci_bar, const char *name)
-{
- unsigned long addr, len;
-
- if (n >= ARRAY_SIZE(info->port))
- return -EINVAL;
-
- addr = pci_resource_start(dev, pci_bar);
- len = pci_resource_len(dev, pci_bar);
- if (addr == 0 || len == 0)
- return -EINVAL;
-
- info->port[n].name = name;
- info->port[n].start = addr;
- info->port[n].size = len;
- info->port[n].porttype = UIO_PORT_X86;
-
- return 0;
-}
-
-/* Unmap previously ioremap'd resources */
-static void
-igbuio_pci_release_iomem(struct uio_info *info)
-{
- int i;
-
- for (i = 0; i < MAX_UIO_MAPS; i++) {
- if (info->mem[i].internal_addr)
- iounmap(info->mem[i].internal_addr);
- }
-}
-