From: David S. Miller Date: Tue, 25 Dec 2007 10:20:33 +0000 (-0800) Subject: [SPARC64]: Implement pci_resource_to_user() X-Git-Tag: v3.12-rc1~24310^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bcea1db16ba1c45ccebb3bfb8441642d1342c4d5;p=kernel%2Fkernel-generic.git [SPARC64]: Implement pci_resource_to_user() This makes libpciaccess able to mmap() resources of the device properly. Signed-off-by: David S. Miller --- diff --git a/arch/sparc64/kernel/pci.c b/arch/sparc64/kernel/pci.c index 63b3ebc..a61c38f 100644 --- a/arch/sparc64/kernel/pci.c +++ b/arch/sparc64/kernel/pci.c @@ -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) */ diff --git a/include/asm-sparc64/pci.h b/include/asm-sparc64/pci.h index 1393e57..f59f257 100644 --- a/include/asm-sparc64/pci.h +++ b/include/asm-sparc64/pci.h @@ -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 */