diff options
Diffstat (limited to 'arch/mips/lib/iomap.c')
| -rw-r--r-- | arch/mips/lib/iomap.c | 227 |
1 files changed, 0 insertions, 227 deletions
diff --git a/arch/mips/lib/iomap.c b/arch/mips/lib/iomap.c deleted file mode 100644 index 9b31653f318c9..0000000000000 --- a/arch/mips/lib/iomap.c +++ /dev/null @@ -1,227 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Implement the default iomap interfaces - * - * (C) Copyright 2004 Linus Torvalds - * (C) Copyright 2006 Ralf Baechle <ralf@linux-mips.org> - * (C) Copyright 2007 MIPS Technologies, Inc. - * written by Ralf Baechle <ralf@linux-mips.org> - */ -#include <linux/export.h> -#include <asm/io.h> - -/* - * Read/write from/to an (offsettable) iomem cookie. It might be a PIO - * access or a MMIO access, these functions don't care. The info is - * encoded in the hardware mapping set up by the mapping functions - * (or the cookie itself, depending on implementation and hw). - * - * The generic routines don't assume any hardware mappings, and just - * encode the PIO/MMIO as part of the cookie. They coldly assume that - * the MMIO IO mappings are not in the low address range. - * - * Architectures for which this is not true can't use this generic - * implementation and should do their own copy. - */ - -#define PIO_MASK 0x0ffffUL - -unsigned int ioread8(void __iomem *addr) -{ - return readb(addr); -} - -EXPORT_SYMBOL(ioread8); - -unsigned int ioread16(void __iomem *addr) -{ - return readw(addr); -} - -EXPORT_SYMBOL(ioread16); - -unsigned int ioread16be(void __iomem *addr) -{ - return be16_to_cpu(__raw_readw(addr)); -} - -EXPORT_SYMBOL(ioread16be); - -unsigned int ioread32(void __iomem *addr) -{ - return readl(addr); -} - -EXPORT_SYMBOL(ioread32); - -unsigned int ioread32be(void __iomem *addr) -{ - return be32_to_cpu(__raw_readl(addr)); -} - -EXPORT_SYMBOL(ioread32be); - -void iowrite8(u8 val, void __iomem *addr) -{ - writeb(val, addr); -} - -EXPORT_SYMBOL(iowrite8); - -void iowrite16(u16 val, void __iomem *addr) -{ - writew(val, addr); -} - -EXPORT_SYMBOL(iowrite16); - -void iowrite16be(u16 val, void __iomem *addr) -{ - __raw_writew(cpu_to_be16(val), addr); -} - -EXPORT_SYMBOL(iowrite16be); - -void iowrite32(u32 val, void __iomem *addr) -{ - writel(val, addr); -} - -EXPORT_SYMBOL(iowrite32); - -void iowrite32be(u32 val, void __iomem *addr) -{ - __raw_writel(cpu_to_be32(val), addr); -} - -EXPORT_SYMBOL(iowrite32be); - -/* - * These are the "repeat MMIO read/write" functions. - * Note the "__mem" accesses, since we want to convert - * to CPU byte order if the host bus happens to not match the - * endianness of PCI/ISA (see mach-generic/mangle-port.h). - */ -static inline void mmio_insb(void __iomem *addr, u8 *dst, int count) -{ - while (--count >= 0) { - u8 data = __mem_readb(addr); - *dst = data; - dst++; - } -} - -static inline void mmio_insw(void __iomem *addr, u16 *dst, int count) -{ - while (--count >= 0) { - u16 data = __mem_readw(addr); - *dst = data; - dst++; - } -} - -static inline void mmio_insl(void __iomem *addr, u32 *dst, int count) -{ - while (--count >= 0) { - u32 data = __mem_readl(addr); - *dst = data; - dst++; - } -} - -static inline void mmio_outsb(void __iomem *addr, const u8 *src, int count) -{ - while (--count >= 0) { - __mem_writeb(*src, addr); - src++; - } -} - -static inline void mmio_outsw(void __iomem *addr, const u16 *src, int count) -{ - while (--count >= 0) { - __mem_writew(*src, addr); - src++; - } -} - -static inline void mmio_outsl(void __iomem *addr, const u32 *src, int count) -{ - while (--count >= 0) { - __mem_writel(*src, addr); - src++; - } -} - -void ioread8_rep(void __iomem *addr, void *dst, unsigned long count) -{ - mmio_insb(addr, dst, count); -} - -EXPORT_SYMBOL(ioread8_rep); - -void ioread16_rep(void __iomem *addr, void *dst, unsigned long count) -{ - mmio_insw(addr, dst, count); -} - -EXPORT_SYMBOL(ioread16_rep); - -void ioread32_rep(void __iomem *addr, void *dst, unsigned long count) -{ - mmio_insl(addr, dst, count); -} - -EXPORT_SYMBOL(ioread32_rep); - -void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count) -{ - mmio_outsb(addr, src, count); -} - -EXPORT_SYMBOL(iowrite8_rep); - -void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count) -{ - mmio_outsw(addr, src, count); -} - -EXPORT_SYMBOL(iowrite16_rep); - -void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count) -{ - mmio_outsl(addr, src, count); -} - -EXPORT_SYMBOL(iowrite32_rep); - -/* - * Create a virtual mapping cookie for an IO port range - * - * This uses the same mapping are as the in/out family which has to be setup - * by the platform initialization code. - * - * Just to make matters somewhat more interesting on MIPS systems with - * multiple host bridge each will have it's own ioport address space. - */ -static void __iomem *ioport_map_legacy(unsigned long port, unsigned int nr) -{ - return (void __iomem *) (mips_io_port_base + port); -} - -void __iomem *ioport_map(unsigned long port, unsigned int nr) -{ - if (port > PIO_MASK) - return NULL; - - return ioport_map_legacy(port, nr); -} - -EXPORT_SYMBOL(ioport_map); - -void ioport_unmap(void __iomem *addr) -{ - /* Nothing to do */ -} - -EXPORT_SYMBOL(ioport_unmap); |