57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _XOR_IMPL_H
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#define _XOR_IMPL_H
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#include <linux/init.h>
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#include <linux/minmax.h>
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struct xor_block_template {
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struct xor_block_template *next;
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const char *name;
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int speed;
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void (*xor_gen)(void *dest, void **srcs, unsigned int src_cnt,
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unsigned int bytes);
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};
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#define __DO_XOR_BLOCKS(_name, _handle1, _handle2, _handle3, _handle4) \
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void \
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xor_gen_##_name(void *dest, void **srcs, unsigned int src_cnt, \
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unsigned int bytes) \
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{ \
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unsigned int src_off = 0; \
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\
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while (src_cnt > 0) { \
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unsigned int this_cnt = min(src_cnt, 4); \
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\
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if (this_cnt == 1) \
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_handle1(bytes, dest, srcs[src_off]); \
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else if (this_cnt == 2) \
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_handle2(bytes, dest, srcs[src_off], \
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srcs[src_off + 1]); \
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else if (this_cnt == 3) \
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_handle3(bytes, dest, srcs[src_off], \
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srcs[src_off + 1], srcs[src_off + 2]); \
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else \
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_handle4(bytes, dest, srcs[src_off], \
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srcs[src_off + 1], srcs[src_off + 2], \
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srcs[src_off + 3]); \
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\
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src_cnt -= this_cnt; \
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src_off += this_cnt; \
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} \
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}
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#define DO_XOR_BLOCKS(_name, _handle1, _handle2, _handle3, _handle4) \
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static __DO_XOR_BLOCKS(_name, _handle1, _handle2, _handle3, _handle4)
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/* generic implementations */
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extern struct xor_block_template xor_block_8regs;
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extern struct xor_block_template xor_block_32regs;
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extern struct xor_block_template xor_block_8regs_p;
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extern struct xor_block_template xor_block_32regs_p;
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void __init xor_register(struct xor_block_template *tmpl);
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void __init xor_force(struct xor_block_template *tmpl);
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#endif /* _XOR_IMPL_H */
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