[thirdparty/qemu.git] / linux-headers / asm-arm64 / sve_context.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/* Copyright (C) 2017-2018 ARM Limited */

/*
 * For use by other UAPI headers only.
 * Do not make direct use of header or its definitions.
 */

#ifndef __ASM_SVE_CONTEXT_H
#define __ASM_SVE_CONTEXT_H

#include <linux/types.h>

#define __SVE_VQ_BYTES		16	/* number of bytes per quadword */

/*
 * Yes, __SVE_VQ_MAX is 512 QUADWORDS.
 *
 * To help ensure forward portability, this is much larger than the
 * current maximum value defined by the SVE architecture.  While arrays
 * or static allocations can be sized based on this value, watch out!
 * It will waste a surprisingly large amount of memory.
 *
 * Dynamic sizing based on the actual runtime vector length is likely to
 * be preferable for most purposes.
 */
#define __SVE_VQ_MIN		1
#define __SVE_VQ_MAX		512

#define __SVE_VL_MIN		(__SVE_VQ_MIN * __SVE_VQ_BYTES)
#define __SVE_VL_MAX		(__SVE_VQ_MAX * __SVE_VQ_BYTES)

#define __SVE_NUM_ZREGS		32
#define __SVE_NUM_PREGS		16

#define __sve_vl_valid(vl)			\
	((vl) % __SVE_VQ_BYTES == 0 &&		\
	 (vl) >= __SVE_VL_MIN &&		\
	 (vl) <= __SVE_VL_MAX)

#define __sve_vq_from_vl(vl)	((vl) / __SVE_VQ_BYTES)
#define __sve_vl_from_vq(vq)	((vq) * __SVE_VQ_BYTES)

#define __SVE_ZREG_SIZE(vq)	((__u32)(vq) * __SVE_VQ_BYTES)
#define __SVE_PREG_SIZE(vq)	((__u32)(vq) * (__SVE_VQ_BYTES / 8))
#define __SVE_FFR_SIZE(vq)	__SVE_PREG_SIZE(vq)

#define __SVE_ZREGS_OFFSET	0
#define __SVE_ZREG_OFFSET(vq, n) \
	(__SVE_ZREGS_OFFSET + __SVE_ZREG_SIZE(vq) * (n))
#define __SVE_ZREGS_SIZE(vq) \
	(__SVE_ZREG_OFFSET(vq, __SVE_NUM_ZREGS) - __SVE_ZREGS_OFFSET)

#define __SVE_PREGS_OFFSET(vq) \
	(__SVE_ZREGS_OFFSET + __SVE_ZREGS_SIZE(vq))
#define __SVE_PREG_OFFSET(vq, n) \
	(__SVE_PREGS_OFFSET(vq) + __SVE_PREG_SIZE(vq) * (n))
#define __SVE_PREGS_SIZE(vq) \
	(__SVE_PREG_OFFSET(vq, __SVE_NUM_PREGS) - __SVE_PREGS_OFFSET(vq))

#define __SVE_FFR_OFFSET(vq) \
	(__SVE_PREGS_OFFSET(vq) + __SVE_PREGS_SIZE(vq))

#endif /* ! _UAPI__ASM_SVE_CONTEXT_H */
Commit	Line	Data
d9cb4336 CH	1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
	2	/* Copyright (C) 2017-2018 ARM Limited */
	3
	4	/*
	5	* For use by other UAPI headers only.
	6	* Do not make direct use of header or its definitions.
	7	*/
	8
	9	#ifndef __ASM_SVE_CONTEXT_H
	10	#define __ASM_SVE_CONTEXT_H
	11
	12	#include <linux/types.h>
	13
	14	#define __SVE_VQ_BYTES 16 /* number of bytes per quadword */
	15
ab0c7fb2 PB	16	/*
	17	* Yes, __SVE_VQ_MAX is 512 QUADWORDS.
	18	*
	19	* To help ensure forward portability, this is much larger than the
	20	* current maximum value defined by the SVE architecture. While arrays
	21	* or static allocations can be sized based on this value, watch out!
	22	* It will waste a surprisingly large amount of memory.
	23	*
	24	* Dynamic sizing based on the actual runtime vector length is likely to
	25	* be preferable for most purposes.
	26	*/
d9cb4336 CH	27	#define __SVE_VQ_MIN 1
	28	#define __SVE_VQ_MAX 512
	29
	30	#define __SVE_VL_MIN (__SVE_VQ_MIN * __SVE_VQ_BYTES)
	31	#define __SVE_VL_MAX (__SVE_VQ_MAX * __SVE_VQ_BYTES)
	32
	33	#define __SVE_NUM_ZREGS 32
	34	#define __SVE_NUM_PREGS 16
	35
	36	#define __sve_vl_valid(vl) \
	37	((vl) % __SVE_VQ_BYTES == 0 && \
	38	(vl) >= __SVE_VL_MIN && \
	39	(vl) <= __SVE_VL_MAX)
	40
	41	#define __sve_vq_from_vl(vl) ((vl) / __SVE_VQ_BYTES)
	42	#define __sve_vl_from_vq(vq) ((vq) * __SVE_VQ_BYTES)
	43
	44	#define __SVE_ZREG_SIZE(vq) ((__u32)(vq) * __SVE_VQ_BYTES)
	45	#define __SVE_PREG_SIZE(vq) ((__u32)(vq) * (__SVE_VQ_BYTES / 8))
	46	#define __SVE_FFR_SIZE(vq) __SVE_PREG_SIZE(vq)
	47
	48	#define __SVE_ZREGS_OFFSET 0
	49	#define __SVE_ZREG_OFFSET(vq, n) \
	50	(__SVE_ZREGS_OFFSET + __SVE_ZREG_SIZE(vq) * (n))
	51	#define __SVE_ZREGS_SIZE(vq) \
	52	(__SVE_ZREG_OFFSET(vq, __SVE_NUM_ZREGS) - __SVE_ZREGS_OFFSET)
	53
	54	#define __SVE_PREGS_OFFSET(vq) \
	55	(__SVE_ZREGS_OFFSET + __SVE_ZREGS_SIZE(vq))
	56	#define __SVE_PREG_OFFSET(vq, n) \
	57	(__SVE_PREGS_OFFSET(vq) + __SVE_PREG_SIZE(vq) * (n))
	58	#define __SVE_PREGS_SIZE(vq) \
	59	(__SVE_PREG_OFFSET(vq, __SVE_NUM_PREGS) - __SVE_PREGS_OFFSET(vq))
	60
	61	#define __SVE_FFR_OFFSET(vq) \
	62	(__SVE_PREGS_OFFSET(vq) + __SVE_PREGS_SIZE(vq))
	63
	64	#endif /* ! _UAPI__ASM_SVE_CONTEXT_H */