| David S. Miller | 749805d | 2006-06-25 23:24:24 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Implement the sparc iomap interfaces |
| 3 | */ |
| 4 | #include <linux/pci.h> |
| 5 | #include <linux/module.h> |
| 6 | #include <asm/io.h> |
| 7 | |
| 8 | /* Create a virtual mapping cookie for an IO port range */ |
| 9 | void __iomem *ioport_map(unsigned long port, unsigned int nr) |
| 10 | { |
| 11 | return (void __iomem *) (unsigned long) port; |
| 12 | } |
| 13 | |
| 14 | void ioport_unmap(void __iomem *addr) |
| 15 | { |
| 16 | /* Nothing to do */ |
| 17 | } |
| 18 | EXPORT_SYMBOL(ioport_map); |
| 19 | EXPORT_SYMBOL(ioport_unmap); |
| 20 | |
| 21 | /* Create a virtual mapping cookie for a PCI BAR (memory or IO) */ |
| 22 | void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen) |
| 23 | { |
| 24 | unsigned long start = pci_resource_start(dev, bar); |
| 25 | unsigned long len = pci_resource_len(dev, bar); |
| 26 | unsigned long flags = pci_resource_flags(dev, bar); |
| 27 | |
| 28 | if (!len || !start) |
| 29 | return NULL; |
| 30 | if (maxlen && len > maxlen) |
| 31 | len = maxlen; |
| 32 | if (flags & IORESOURCE_IO) |
| 33 | return ioport_map(start, len); |
| 34 | if (flags & IORESOURCE_MEM) { |
| 35 | if (flags & IORESOURCE_CACHEABLE) |
| 36 | return ioremap(start, len); |
| 37 | return ioremap_nocache(start, len); |
| 38 | } |
| 39 | /* What? */ |
| 40 | return NULL; |
| 41 | } |
| 42 | |
| 43 | void pci_iounmap(struct pci_dev *dev, void __iomem * addr) |
| 44 | { |
| 45 | /* nothing to do */ |
| 46 | } |
| 47 | EXPORT_SYMBOL(pci_iomap); |
| 48 | EXPORT_SYMBOL(pci_iounmap); |