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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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68275680ea
There are dedicated macros (lower_32_bits and upper_32_bits) available to extract the lower and upper 32 bits. They provide better readability and could prevent some compilation warnings. Signed-off-by: Roman Kiryanov <rkir@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
34 lines
738 B
C
34 lines
738 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __LINUX_GOLDFISH_H
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#define __LINUX_GOLDFISH_H
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/io.h>
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/* Helpers for Goldfish virtual platform */
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static inline void gf_write_ptr(const void *ptr, void __iomem *portl,
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void __iomem *porth)
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{
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const unsigned long addr = (unsigned long)ptr;
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writel(lower_32_bits(addr), portl);
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#ifdef CONFIG_64BIT
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writel(upper_32_bits(addr), porth);
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#endif
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}
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static inline void gf_write_dma_addr(const dma_addr_t addr,
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void __iomem *portl,
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void __iomem *porth)
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{
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writel(lower_32_bits(addr), portl);
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#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
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writel(upper_32_bits(addr), porth);
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#endif
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}
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#endif /* __LINUX_GOLDFISH_H */
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