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Enable v8.6 AMU enhancements (FEAT_AMUv1p1)

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ARMv8.6 adds virtual offset registers to support virtualization of the
event counters in EL1 and EL0.  This patch enables support for this
feature in EL3 firmware.

Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: I7ee1f3d9f554930bf5ef6f3d492e932e6d95b217
This commit is contained in:
johpow01 2020-10-02 13:41:11 -05:00 • committed by John
parent 8909fa9bbf
commit 873d4241e3
15 changed files with 536 additions and 92 deletions
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22
include/lib/extensions/amu.h
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2017-2020, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2017-2021, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -66,19 +66,31 @@ CASSERT(AMU_GROUP1_COUNTERS_MASK <= 0xffff, invalid_amu_group1_counters_mask);
struct amu_ctx {
uint64_t group0_cnts[AMU_GROUP0_NR_COUNTERS];
#if __aarch64__
/* Architected event counter 1 does not have an offset register. */
uint64_t group0_voffsets[AMU_GROUP0_NR_COUNTERS-1];
#endif
#if AMU_GROUP1_NR_COUNTERS
uint64_t group1_cnts[AMU_GROUP1_NR_COUNTERS];
#if __aarch64__
uint64_t group1_voffsets[AMU_GROUP1_NR_COUNTERS];
#endif
#endif
};
bool amu_supported(void);
unsigned int amu_get_version(void);
void amu_enable(bool el2_unused);
/* Group 0 configuration helpers */
uint64_t amu_group0_cnt_read(unsigned int idx);
void amu_group0_cnt_write(unsigned int idx, uint64_t val);
#if __aarch64__
uint64_t amu_group0_voffset_read(unsigned int idx);
void amu_group0_voffset_write(unsigned int idx, uint64_t val);
#endif
#if AMU_GROUP1_NR_COUNTERS
bool amu_group1_supported(void);
@ -86,6 +98,12 @@ bool amu_group1_supported(void);
uint64_t amu_group1_cnt_read(unsigned int idx);
void amu_group1_cnt_write(unsigned int idx, uint64_t val);
void amu_group1_set_evtype(unsigned int idx, unsigned int val);
#if __aarch64__
uint64_t amu_group1_voffset_read(unsigned int idx);
void amu_group1_voffset_write(unsigned int idx, uint64_t val);
#endif
#endif
#endif /* AMU_H */