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); |