38 lines
773 B
C
38 lines
773 B
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef _COMMON_H
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#define _COMMON_H
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#include <string.h>
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#include "ccan/endian/endian.h"
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#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
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#define min(x, y) ((x) > (y) ? (y) : (x))
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#define max(x, y) ((x) > (y) ? (x) : (y))
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#ifdef __packed
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#else /* __packed */
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#define __packed __attribute__((__packed__))
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#endif /* __packed */
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static inline uint32_t mmio_read32(void *addr)
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{
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leint32_t *p = addr;
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return le32_to_cpu(*p);
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}
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/* Access 64-bit registers as 2 32-bit; Some devices fail 64-bit MMIO. */
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static inline uint64_t mmio_read64(void *addr)
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{
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const volatile uint32_t *p = addr;
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uint32_t low, high;
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low = le32_to_cpu(*p);
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high = le32_to_cpu(*(p + 1));
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return ((uint64_t) high << 32) | low;
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}
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#endif
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