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Based on 1 normalized pattern(s): this file is free software you can redistribute it and or modify it under the terms of version 2 of the gnu general public license 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 st 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 8 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081207.443595178@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
30 lines
807 B
C
30 lines
807 B
C
// SPDX-License-Identifier: GPL-2.0-only
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#include <linux/export.h>
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#include <linux/io.h>
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/**
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* __ioread64_copy - copy data from MMIO space, in 64-bit units
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* @to: destination (must be 64-bit aligned)
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* @from: source, in MMIO space (must be 64-bit aligned)
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* @count: number of 64-bit quantities to copy
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*
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* Copy data from MMIO space to kernel space, in units of 32 or 64 bits at a
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* time. Order of access is not guaranteed, nor is a memory barrier
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* performed afterwards.
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*/
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void __ioread64_copy(void *to, const void __iomem *from, size_t count)
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{
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#ifdef CONFIG_64BIT
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u64 *dst = to;
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const u64 __iomem *src = from;
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const u64 __iomem *end = src + count;
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while (src < end)
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*dst++ = __raw_readq(src++);
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#else
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__ioread32_copy(to, from, count * 2);
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#endif
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}
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EXPORT_SYMBOL_GPL(__ioread64_copy);
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