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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 and only version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 51 franklin street fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 94 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141334.043630402@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
45 lines
1.0 KiB
C
45 lines
1.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* I/O remap functions for Hexagon
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*
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* Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
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*/
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#include <linux/io.h>
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#include <linux/vmalloc.h>
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#include <linux/mm.h>
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void __iomem *ioremap_nocache(unsigned long phys_addr, unsigned long size)
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{
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unsigned long last_addr, addr;
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unsigned long offset = phys_addr & ~PAGE_MASK;
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struct vm_struct *area;
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pgprot_t prot = __pgprot(_PAGE_PRESENT|_PAGE_READ|_PAGE_WRITE
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|(__HEXAGON_C_DEV << 6));
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last_addr = phys_addr + size - 1;
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/* Wrapping not allowed */
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if (!size || (last_addr < phys_addr))
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return NULL;
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/* Rounds up to next page size, including whole-page offset */
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size = PAGE_ALIGN(offset + size);
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area = get_vm_area(size, VM_IOREMAP);
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addr = (unsigned long)area->addr;
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if (ioremap_page_range(addr, addr+size, phys_addr, prot)) {
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vunmap((void *)addr);
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return NULL;
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}
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return (void __iomem *) (offset + addr);
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}
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void __iounmap(const volatile void __iomem *addr)
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{
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vunmap((void *) ((unsigned long) addr & PAGE_MASK));
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}
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