| // SPDX-License-Identifier: GPL-2.0-only |
| * I/O remap functions for Hexagon |
| * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved. |
| #include <linux/vmalloc.h> |
| void __iomem *ioremap(unsigned long phys_addr, unsigned long size) |
| unsigned long last_addr, addr; |
| unsigned long offset = phys_addr & ~PAGE_MASK; |
| pgprot_t prot = __pgprot(_PAGE_PRESENT|_PAGE_READ|_PAGE_WRITE |
| |(__HEXAGON_C_DEV << 6)); |
| last_addr = phys_addr + size - 1; |
| /* Wrapping not allowed */ |
| if (!size || (last_addr < phys_addr)) |
| /* Rounds up to next page size, including whole-page offset */ |
| size = PAGE_ALIGN(offset + size); |
| area = get_vm_area(size, VM_IOREMAP); |
| addr = (unsigned long)area->addr; |
| if (ioremap_page_range(addr, addr+size, phys_addr, prot)) { |
| return (void __iomem *) (offset + addr); |
| void iounmap(const volatile void __iomem *addr) |
| vunmap((void *) ((unsigned long) addr & PAGE_MASK)); |