97 lines
2.7 KiB
C
97 lines
2.7 KiB
C
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Structs and functions to support MPAM CPBM
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*
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* Copyright (C) 2021 Samsung Electronics
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*/
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#ifndef __SEC_MPAM_CPBM_H
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#define __SEC_MPAM_CPBM_H
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#include <linux/bitmap.h>
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#include <linux/bitops.h>
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#include <linux/slab.h>
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#include <linux/types.h>
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/* Reference: "11.4.2 MPAMCFG_CPBM<n>, MPAM Cache Portion Bitmap Partition
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* Configuration Register, n = 0 -1023", pp.233,
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* "Memory System Resource Partitioning and Monitoring (MPAM), for Armv8-A",
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* 2021.1.22, Issue B.c, "Arm® Architecture Reference Manual Supplement"
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*/
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#define SEC_MPAM_CPBM_BITLEN (32)
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typedef struct mpam_cpbm_s { DECLARE_BITMAP(bits, SEC_MPAM_CPBM_BITLEN); } mpam_cpbm_t;
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typedef struct mpam_cpbm_s *mpam_cpbm_var_t;
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static inline unsigned int __mpam_cpbm_bitlen(const mpam_cpbm_var_t m)
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{
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return m ? SEC_MPAM_CPBM_BITLEN : 0;
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}
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static inline unsigned long *__mpam_cpbm_bits(const mpam_cpbm_var_t m)
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{
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return m ? m->bits : NULL;
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}
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static inline unsigned int mpam_cpbm_arraysize(void)
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{
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return BITS_TO_LONGS(SEC_MPAM_CPBM_BITLEN);
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}
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static inline unsigned int mpam_cpbm_size(void)
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{
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return mpam_cpbm_arraysize() * sizeof(long);
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}
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static inline bool alloc_mpam_cpbm_var(mpam_cpbm_var_t *mask, gfp_t flags)
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{
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*mask = kmalloc_node(mpam_cpbm_size(), flags, NUMA_NO_NODE);
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return *mask != NULL;
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}
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static inline void free_mpam_cpbm_var(mpam_cpbm_var_t mask)
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{
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kfree(mask);
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}
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#define mpam_cpbm_pr_args(maskp) __mpam_cpbm_bitlen(maskp), \
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__mpam_cpbm_bits(maskp)
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#define mpam_cpbm_clear(dstp) __mpam_cpbm_clear(dstp, SEC_MPAM_CPBM_BITLEN)
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static inline void __mpam_cpbm_clear(mpam_cpbm_var_t dstp, unsigned int nbits)
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{
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bitmap_zero(dstp->bits, nbits);
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}
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#define mpam_cpbm_setall(dstp) __mpam_cpbm_setall(dstp, SEC_MPAM_CPBM_BITLEN)
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static inline void __mpam_cpbm_setall(mpam_cpbm_var_t dstp, unsigned int nbits)
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{
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bitmap_fill(dstp->bits, nbits);
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}
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static inline int mpam_cpbm_parse(const char *buf, mpam_cpbm_var_t dstp)
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{
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return bitmap_parselist(buf, __mpam_cpbm_bits(dstp), __mpam_cpbm_bitlen(dstp));
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}
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#define mpam_cpbm_subset(src1p, src2p) \
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__mpam_cpbm_subset(src1p, src2p, SEC_MPAM_CPBM_BITLEN)
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static inline int __mpam_cpbm_subset(const mpam_cpbm_var_t src1p,
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mpam_cpbm_var_t src2p, unsigned int nbits)
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{
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return bitmap_subset(src1p->bits, src2p->bits, nbits);
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}
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#define mpam_cpbm_equal(src1p, src2p) \
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__mpam_cpbm_equal(src1p, src2p, SEC_MPAM_CPBM_BITLEN)
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static inline int __mpam_cpbm_equal(const mpam_cpbm_var_t src1p,
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const mpam_cpbm_var_t src2p, unsigned int nbits)
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{
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return bitmap_equal(src1p->bits, src2p->bits, nbits);
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}
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#define mpam_cpbm_full(src) \
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__mpam_cpbm_full(src, SEC_MPAM_CPBM_BITLEN)
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static inline int __mpam_cpbm_full(const mpam_cpbm_var_t src, unsigned int nbits)
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{
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return bitmap_full(src->bits, nbits);
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}
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#endif /* __SEC_MPAM_CPBM_H */
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