openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

[SPARC64]: Implement pci_resource_to_user() 

This makes libpciaccess able to mmap() resources of the
device properly.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2007-12-25 02:20:33 -08:00
parent 11ee29577c
commit bcea1db16b
2 changed files with 20 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
arch/sparc64/kernel/pci.c
View File

@ -1275,4 +1275,20 @@ int pci_dma_supported(struct pci_dev *pdev, u64 device_mask)
return (device_mask & dma_addr_mask) == dma_addr_mask;
}
void pci_resource_to_user(const struct pci_dev *pdev, int bar,
const struct resource *rp, resource_size_t *start,
resource_size_t *end)
{
struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
unsigned long offset;
if (rp->flags & IORESOURCE_IO)
offset = pbm->io_space.start;
else
offset = pbm->mem_space.start;
*start = rp->start - offset;
*end = rp->end - offset;
}
#endif /* !(CONFIG_PCI) */

4
include/asm-sparc64/pci.h
View File

@ -200,6 +200,10 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
struct device_node;
extern struct device_node *pci_device_to_OF_node(struct pci_dev *pdev);
#define HAVE_ARCH_PCI_RESOURCE_TO_USER
extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
const struct resource *rsrc,
resource_size_t *start, resource_size_t *end);
#endif /* __KERNEL__ */
#endif /* __SPARC64_PCI_H */