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 */ 9void __iomem *ioport_map(unsigned long port, unsigned int nr) 10{ 11 return (void __iomem *) (unsigned long) port; 12} 13 14void ioport_unmap(void __iomem *addr) 15{ 16 /* Nothing to do */ 17} 18EXPORT_SYMBOL(ioport_map); 19EXPORT_SYMBOL(ioport_unmap); 20 21/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */ 22void __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 43void pci_iounmap(struct pci_dev *dev, void __iomem * addr) 44{ 45 /* nothing to do */ 46} 47EXPORT_SYMBOL(pci_iomap); 48EXPORT_SYMBOL(pci_iounmap); 49