| /* |
| * DaVinci I/O mapping code |
| * |
| * Copyright (C) 2005-2006 Texas Instruments |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/io.h> |
| |
| #include <asm/tlb.h> |
| #include <asm/mach/map.h> |
| |
| #include <mach/common.h> |
| |
| /* |
| * Intercept ioremap() requests for addresses in our fixed mapping regions. |
| */ |
| void __iomem *davinci_ioremap(unsigned long p, size_t size, unsigned int type) |
| { |
| struct map_desc *desc = davinci_soc_info.io_desc; |
| int desc_num = davinci_soc_info.io_desc_num; |
| int i; |
| |
| for (i = 0; i < desc_num; i++, desc++) { |
| unsigned long iophys = __pfn_to_phys(desc->pfn); |
| unsigned long iosize = desc->length; |
| |
| if (p >= iophys && (p + size) <= (iophys + iosize)) |
| return __io(desc->virtual + p - iophys); |
| } |
| |
| return __arm_ioremap_caller(p, size, type, |
| __builtin_return_address(0)); |
| } |
| EXPORT_SYMBOL(davinci_ioremap); |
| |
| void davinci_iounmap(volatile void __iomem *addr) |
| { |
| unsigned long virt = (unsigned long)addr; |
| |
| if (virt >= VMALLOC_START && virt < VMALLOC_END) |
| __iounmap(addr); |
| } |
| EXPORT_SYMBOL(davinci_iounmap); |
