[linux-block.git] / arch / powerpc / lib / xor_vmx.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *
 * Copyright (C) IBM Corporation, 2012
 *
 * Author: Anton Blanchard <anton@au.ibm.com>
 */

/*
 * Sparse (as at v0.5.0) gets very, very confused by this file.
 * Make it a bit simpler for it.
 */
#if !defined(__CHECKER__)
#include <altivec.h>
#else
#define vec_xor(a, b) a ^ b
#define vector __attribute__((vector_size(16)))
#endif

#include "xor_vmx.h"

typedef vector signed char unative_t;

#define DEFINE(V)				\
	unative_t *V = (unative_t *)V##_in;	\
	unative_t V##_0, V##_1, V##_2, V##_3

#define LOAD(V)			\
	do {			\
		V##_0 = V[0];	\
		V##_1 = V[1];	\
		V##_2 = V[2];	\
		V##_3 = V[3];	\
	} while (0)

#define STORE(V)		\
	do {			\
		V[0] = V##_0;	\
		V[1] = V##_1;	\
		V[2] = V##_2;	\
		V[3] = V##_3;	\
	} while (0)

#define XOR(V1, V2)					\
	do {						\
		V1##_0 = vec_xor(V1##_0, V2##_0);	\
		V1##_1 = vec_xor(V1##_1, V2##_1);	\
		V1##_2 = vec_xor(V1##_2, V2##_2);	\
		V1##_3 = vec_xor(V1##_3, V2##_3);	\
	} while (0)

void __xor_altivec_2(unsigned long bytes, unsigned long *v1_in,
		     unsigned long *v2_in)
{
	DEFINE(v1);
	DEFINE(v2);
	unsigned long lines = bytes / (sizeof(unative_t)) / 4;

	do {
		LOAD(v1);
		LOAD(v2);
		XOR(v1, v2);
		STORE(v1);

		v1 += 4;
		v2 += 4;
	} while (--lines > 0);
}

void __xor_altivec_3(unsigned long bytes, unsigned long *v1_in,
		     unsigned long *v2_in, unsigned long *v3_in)
{
	DEFINE(v1);
	DEFINE(v2);
	DEFINE(v3);
	unsigned long lines = bytes / (sizeof(unative_t)) / 4;

	do {
		LOAD(v1);
		LOAD(v2);
		LOAD(v3);
		XOR(v1, v2);
		XOR(v1, v3);
		STORE(v1);

		v1 += 4;
		v2 += 4;
		v3 += 4;
	} while (--lines > 0);
}

void __xor_altivec_4(unsigned long bytes, unsigned long *v1_in,
		     unsigned long *v2_in, unsigned long *v3_in,
		     unsigned long *v4_in)
{
	DEFINE(v1);
	DEFINE(v2);
	DEFINE(v3);
	DEFINE(v4);
	unsigned long lines = bytes / (sizeof(unative_t)) / 4;

	do {
		LOAD(v1);
		LOAD(v2);
		LOAD(v3);
		LOAD(v4);
		XOR(v1, v2);
		XOR(v3, v4);
		XOR(v1, v3);
		STORE(v1);

		v1 += 4;
		v2 += 4;
		v3 += 4;
		v4 += 4;
	} while (--lines > 0);
}

void __xor_altivec_5(unsigned long bytes, unsigned long *v1_in,
		     unsigned long *v2_in, unsigned long *v3_in,
		     unsigned long *v4_in, unsigned long *v5_in)
{
	DEFINE(v1);
	DEFINE(v2);
	DEFINE(v3);
	DEFINE(v4);
	DEFINE(v5);
	unsigned long lines = bytes / (sizeof(unative_t)) / 4;

	do {
		LOAD(v1);
		LOAD(v2);
		LOAD(v3);
		LOAD(v4);
		LOAD(v5);
		XOR(v1, v2);
		XOR(v3, v4);
		XOR(v1, v5);
		XOR(v1, v3);
		STORE(v1);

		v1 += 4;
		v2 += 4;
		v3 += 4;
		v4 += 4;
		v5 += 4;
	} while (--lines > 0);
}
Commit	Line	Data
1a59d1b8	1	// SPDX-License-Identifier: GPL-2.0-or-later
ef1313de	2	/*
ef1313de AB	3	*
	4	* Copyright (C) IBM Corporation, 2012
	5	*
	6	* Author: Anton Blanchard <anton@au.ibm.com>
	7	*/
8fe08885 DA	8
	9	/*
	10	* Sparse (as at v0.5.0) gets very, very confused by this file.
	11	* Make it a bit simpler for it.
	12	*/
	13	#if !defined(__CHECKER__)
ef1313de	14	#include <altivec.h>
8fe08885 DA	15	#else
	16	#define vec_xor(a, b) a ^ b
	17	#define vector __attribute__((vector_size(16)))
	18	#endif
ef1313de	19
f718d426	20	#include "xor_vmx.h"
ef1313de AB	21
	22	typedef vector signed char unative_t;
	23
	24	#define DEFINE(V) \
	25	unative_t V = (unative_t )V##_in; \
	26	unative_t V##_0, V##_1, V##_2, V##_3
	27
	28	#define LOAD(V) \
	29	do { \
	30	V##_0 = V[0]; \
	31	V##_1 = V[1]; \
	32	V##_2 = V[2]; \
	33	V##_3 = V[3]; \
	34	} while (0)
	35
	36	#define STORE(V) \
	37	do { \
	38	V[0] = V##_0; \
	39	V[1] = V##_1; \
	40	V[2] = V##_2; \
	41	V[3] = V##_3; \
	42	} while (0)
	43
	44	#define XOR(V1, V2) \
	45	do { \
	46	V1##_0 = vec_xor(V1##_0, V2##_0); \
	47	V1##_1 = vec_xor(V1##_1, V2##_1); \
	48	V1##_2 = vec_xor(V1##_2, V2##_2); \
	49	V1##_3 = vec_xor(V1##_3, V2##_3); \
	50	} while (0)
	51
f718d426 MB	52	void __xor_altivec_2(unsigned long bytes, unsigned long *v1_in,
f718d426 MB	53	unsigned long *v2_in)
ef1313de AB	54	{
	55	DEFINE(v1);
	56	DEFINE(v2);
	57	unsigned long lines = bytes / (sizeof(unative_t)) / 4;
	58
ef1313de AB	59	do {
	60	LOAD(v1);
	61	LOAD(v2);
	62	XOR(v1, v2);
	63	STORE(v1);
	64
	65	v1 += 4;
	66	v2 += 4;
	67	} while (--lines > 0);
ef1313de	68	}
ef1313de	69
f718d426 MB	70	void __xor_altivec_3(unsigned long bytes, unsigned long *v1_in,
f718d426 MB	71	unsigned long v2_in, unsigned long v3_in)
ef1313de AB	72	{
	73	DEFINE(v1);
	74	DEFINE(v2);
	75	DEFINE(v3);
	76	unsigned long lines = bytes / (sizeof(unative_t)) / 4;
	77
ef1313de AB	78	do {
	79	LOAD(v1);
	80	LOAD(v2);
	81	LOAD(v3);
	82	XOR(v1, v2);
	83	XOR(v1, v3);
	84	STORE(v1);
	85
	86	v1 += 4;
	87	v2 += 4;
	88	v3 += 4;
	89	} while (--lines > 0);
ef1313de	90	}
ef1313de	91
f718d426 MB	92	void __xor_altivec_4(unsigned long bytes, unsigned long *v1_in,
	93	unsigned long v2_in, unsigned long v3_in,
	94	unsigned long *v4_in)
ef1313de AB	95	{
	96	DEFINE(v1);
	97	DEFINE(v2);
	98	DEFINE(v3);
	99	DEFINE(v4);
	100	unsigned long lines = bytes / (sizeof(unative_t)) / 4;
	101
ef1313de AB	102	do {
	103	LOAD(v1);
	104	LOAD(v2);
	105	LOAD(v3);
	106	LOAD(v4);
	107	XOR(v1, v2);
	108	XOR(v3, v4);
	109	XOR(v1, v3);
	110	STORE(v1);
	111
	112	v1 += 4;
	113	v2 += 4;
	114	v3 += 4;
	115	v4 += 4;
	116	} while (--lines > 0);
ef1313de	117	}
ef1313de	118
f718d426 MB	119	void __xor_altivec_5(unsigned long bytes, unsigned long *v1_in,
	120	unsigned long v2_in, unsigned long v3_in,
	121	unsigned long v4_in, unsigned long v5_in)
ef1313de AB	122	{
	123	DEFINE(v1);
	124	DEFINE(v2);
	125	DEFINE(v3);
	126	DEFINE(v4);
	127	DEFINE(v5);
	128	unsigned long lines = bytes / (sizeof(unative_t)) / 4;
	129
ef1313de AB	130	do {
	131	LOAD(v1);
	132	LOAD(v2);
	133	LOAD(v3);
	134	LOAD(v4);
	135	LOAD(v5);
	136	XOR(v1, v2);
	137	XOR(v3, v4);
	138	XOR(v1, v5);
	139	XOR(v1, v3);
	140	STORE(v1);
	141
	142	v1 += 4;
	143	v2 += 4;
	144	v3 += 4;
	145	v4 += 4;
	146	v5 += 4;
	147	} while (--lines > 0);
ef1313de	148	}