ia64/linux-2.6.18-xen.hg

view arch/sparc/lib/iomap.c @ 912:dd42cdb0ab89

[IA64] Build blktap2 driver by default in x86 builds.

add CONFIG_XEN_BLKDEV_TAP2=y to buildconfigs/linux-defconfig_xen_ia64.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
author Isaku Yamahata <yamahata@valinux.co.jp>
date Mon Jun 29 12:09:16 2009 +0900 (2009-06-29)
parents 831230e53067
children
line source
1 /*
2 * Implement the sparc iomap interfaces
3 */
4 #include <linux/pci.h>
5 #include <linux/module.h>
6 #include <asm/io.h>
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 }
14 void ioport_unmap(void __iomem *addr)
15 {
16 /* Nothing to do */
17 }
18 EXPORT_SYMBOL(ioport_map);
19 EXPORT_SYMBOL(ioport_unmap);
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);
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 }
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);