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 resource_size_t start = pci_resource_start(dev, bar); 25 resource_size_t 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); 49