| Michal Simek | a6475c1 | 2010-01-18 15:27:10 +0100 | [diff] [blame] | 1 | /* |
| 2 | * ppc64 "iomap" interface implementation. |
| 3 | * |
| 4 | * (C) Copyright 2004 Linus Torvalds |
| 5 | */ |
| 6 | #include <linux/init.h> |
| 7 | #include <linux/pci.h> |
| 8 | #include <linux/mm.h> |
| 9 | #include <asm/io.h> |
| 10 | #include <asm/pci-bridge.h> |
| 11 | |
| 12 | void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max) |
| 13 | { |
| 14 | resource_size_t start = pci_resource_start(dev, bar); |
| 15 | resource_size_t len = pci_resource_len(dev, bar); |
| 16 | unsigned long flags = pci_resource_flags(dev, bar); |
| 17 | |
| 18 | if (!len) |
| 19 | return NULL; |
| 20 | if (max && len > max) |
| 21 | len = max; |
| 22 | if (flags & IORESOURCE_IO) |
| 23 | return ioport_map(start, len); |
| 24 | if (flags & IORESOURCE_MEM) |
| 25 | return ioremap(start, len); |
| 26 | /* What? */ |
| 27 | return NULL; |
| 28 | } |
| 29 | EXPORT_SYMBOL(pci_iomap); |
| 30 | |
| 31 | void pci_iounmap(struct pci_dev *dev, void __iomem *addr) |
| 32 | { |
| 33 | if (isa_vaddr_is_ioport(addr)) |
| 34 | return; |
| 35 | if (pcibios_vaddr_is_ioport(addr)) |
| 36 | return; |
| 37 | iounmap(addr); |
| 38 | } |
| 39 | EXPORT_SYMBOL(pci_iounmap); |