diff options
Diffstat (limited to 'lib/iomap.c')
| -rw-r--r-- | lib/iomap.c | 47 |
1 files changed, 8 insertions, 39 deletions
diff --git a/lib/iomap.c b/lib/iomap.c index dd6ca48fe6b..fc3dcb4b238 100644 --- a/lib/iomap.c +++ b/lib/iomap.c @@ -6,7 +6,7 @@ #include <linux/pci.h> #include <linux/io.h> -#include <linux/module.h> +#include <linux/export.h> /* * Read/write from/to an (offsettable) iomem cookie. It might be a PIO @@ -40,8 +40,7 @@ static void bad_io_access(unsigned long port, const char *access) static int count = 10; if (count) { count--; - printk(KERN_ERR "Bad IO access at port %#lx (%s)\n", port, access); - WARN_ON(1); + WARN(1, KERN_ERR "Bad IO access at port %#lx (%s)\n", port, access); } } @@ -225,6 +224,7 @@ EXPORT_SYMBOL(iowrite8_rep); EXPORT_SYMBOL(iowrite16_rep); EXPORT_SYMBOL(iowrite32_rep); +#ifdef CONFIG_HAS_IOPORT_MAP /* Create a virtual mapping cookie for an IO port range */ void __iomem *ioport_map(unsigned long port, unsigned int nr) { @@ -239,45 +239,14 @@ void ioport_unmap(void __iomem *addr) } EXPORT_SYMBOL(ioport_map); EXPORT_SYMBOL(ioport_unmap); +#endif /* CONFIG_HAS_IOPORT_MAP */ -/** - * pci_iomap - create a virtual mapping cookie for a PCI BAR - * @dev: PCI device that owns the BAR - * @bar: BAR number - * @maxlen: length of the memory to map - * - * Using this function you will get a __iomem address to your device BAR. - * You can access it using ioread*() and iowrite*(). These functions hide - * the details if this is a MMIO or PIO address space and will just do what - * you expect from them in the correct way. - * - * @maxlen specifies the maximum length to map. If you want to get access to - * the complete BAR without checking for its length first, pass %0 here. - * */ -void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen) -{ - resource_size_t start = pci_resource_start(dev, bar); - unsigned long len = pci_resource_len(dev, bar); - unsigned long flags = pci_resource_flags(dev, bar); - - if (!len || !start) - return NULL; - if (maxlen && len > maxlen) - len = maxlen; - if (flags & IORESOURCE_IO) - return ioport_map(start, len); - if (flags & IORESOURCE_MEM) { - if (flags & IORESOURCE_CACHEABLE) - return ioremap(start, len); - return ioremap_nocache(start, len); - } - /* What? */ - return NULL; -} - +#ifdef CONFIG_PCI +/* Hide the details if this is a MMIO or PIO address space and just do what + * you expect in the correct way. */ void pci_iounmap(struct pci_dev *dev, void __iomem * addr) { IO_COND(addr, /* nothing */, iounmap(addr)); } -EXPORT_SYMBOL(pci_iomap); EXPORT_SYMBOL(pci_iounmap); +#endif /* CONFIG_PCI */ |