projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * Implement the sparc64 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 | { | |
| b70d3a2c BH |
24 | resource_size_t start = pci_resource_start(dev, bar); |
| 25 | resource_size_t len = pci_resource_len(dev, bar); | |
| 1da177e4 LT |
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); |