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0824121660
zihpm is the Hardware Performance Counters extension described in chapter 12 of the unprivileged spec. It describes support for 29 unprivileged performance counters, hpmcounter3-hpmcounter31. As with zicntr, QEMU already implements zihpm before it was even an extension. zihpm is also part of the RVA22 profile, so add it to QEMU to complement the future profile implementation. Default it to 'true' for all existing CPUs since it was always present in the code. As for disabling it, there is already code in place in target/riscv/csr.c in all predicates for these counters (ctr() and mctr()) that disables them if cpu->cfg.pmu_num is zero. Thus, setting cpu->cfg.pmu_num to zero if 'zihpm=false' is enough to disable the extension. Set cpu->pmu_avail_ctrs mask to zero as well since this is also checked to verify if the counters exist. Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-ID: <20231023153927.435083-4-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
188 lines
4.7 KiB
C
188 lines
4.7 KiB
C
/*
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* QEMU RISC-V CPU CFG
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*
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* Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu
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* Copyright (c) 2017-2018 SiFive, Inc.
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* Copyright (c) 2021-2023 PLCT Lab
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2 or later, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef RISCV_CPU_CFG_H
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#define RISCV_CPU_CFG_H
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/*
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* map is a 16-bit bitmap: the most significant set bit in map is the maximum
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* satp mode that is supported. It may be chosen by the user and must respect
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* what qemu implements (valid_1_10_32/64) and what the hw is capable of
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* (supported bitmap below).
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*
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* init is a 16-bit bitmap used to make sure the user selected a correct
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* configuration as per the specification.
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*
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* supported is a 16-bit bitmap used to reflect the hw capabilities.
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*/
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typedef struct {
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uint16_t map, init, supported;
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} RISCVSATPMap;
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struct RISCVCPUConfig {
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bool ext_zba;
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bool ext_zbb;
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bool ext_zbc;
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bool ext_zbkb;
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bool ext_zbkc;
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bool ext_zbkx;
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bool ext_zbs;
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bool ext_zca;
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bool ext_zcb;
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bool ext_zcd;
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bool ext_zce;
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bool ext_zcf;
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bool ext_zcmp;
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bool ext_zcmt;
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bool ext_zk;
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bool ext_zkn;
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bool ext_zknd;
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bool ext_zkne;
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bool ext_zknh;
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bool ext_zkr;
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bool ext_zks;
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bool ext_zksed;
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bool ext_zksh;
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bool ext_zkt;
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bool ext_zifencei;
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bool ext_zicntr;
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bool ext_zicsr;
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bool ext_zicbom;
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bool ext_zicboz;
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bool ext_zicond;
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bool ext_zihintntl;
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bool ext_zihintpause;
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bool ext_zihpm;
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bool ext_smstateen;
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bool ext_sstc;
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bool ext_svadu;
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bool ext_svinval;
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bool ext_svnapot;
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bool ext_svpbmt;
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bool ext_zdinx;
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bool ext_zawrs;
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bool ext_zfa;
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bool ext_zfbfmin;
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bool ext_zfh;
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bool ext_zfhmin;
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bool ext_zfinx;
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bool ext_zhinx;
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bool ext_zhinxmin;
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bool ext_zve32f;
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bool ext_zve64f;
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bool ext_zve64d;
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bool ext_zvbb;
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bool ext_zvbc;
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bool ext_zvkg;
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bool ext_zvkned;
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bool ext_zvknha;
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bool ext_zvknhb;
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bool ext_zvksed;
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bool ext_zvksh;
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bool ext_zmmul;
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bool ext_zvfbfmin;
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bool ext_zvfbfwma;
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bool ext_zvfh;
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bool ext_zvfhmin;
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bool ext_smaia;
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bool ext_ssaia;
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bool ext_sscofpmf;
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bool ext_smepmp;
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bool rvv_ta_all_1s;
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bool rvv_ma_all_1s;
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uint32_t mvendorid;
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uint64_t marchid;
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uint64_t mimpid;
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/* Vendor-specific custom extensions */
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bool ext_xtheadba;
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bool ext_xtheadbb;
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bool ext_xtheadbs;
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bool ext_xtheadcmo;
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bool ext_xtheadcondmov;
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bool ext_xtheadfmemidx;
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bool ext_xtheadfmv;
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bool ext_xtheadmac;
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bool ext_xtheadmemidx;
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bool ext_xtheadmempair;
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bool ext_xtheadsync;
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bool ext_XVentanaCondOps;
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uint8_t pmu_num;
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char *priv_spec;
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char *user_spec;
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char *bext_spec;
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char *vext_spec;
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uint16_t vlen;
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uint16_t elen;
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uint16_t cbom_blocksize;
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uint16_t cboz_blocksize;
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bool mmu;
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bool pmp;
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bool debug;
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bool misa_w;
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bool short_isa_string;
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#ifndef CONFIG_USER_ONLY
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RISCVSATPMap satp_mode;
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#endif
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};
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typedef struct RISCVCPUConfig RISCVCPUConfig;
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/* Helper functions to test for extensions. */
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static inline bool always_true_p(const RISCVCPUConfig *cfg __attribute__((__unused__)))
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{
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return true;
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}
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static inline bool has_xthead_p(const RISCVCPUConfig *cfg)
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{
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return cfg->ext_xtheadba || cfg->ext_xtheadbb ||
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cfg->ext_xtheadbs || cfg->ext_xtheadcmo ||
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cfg->ext_xtheadcondmov ||
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cfg->ext_xtheadfmemidx || cfg->ext_xtheadfmv ||
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cfg->ext_xtheadmac || cfg->ext_xtheadmemidx ||
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cfg->ext_xtheadmempair || cfg->ext_xtheadsync;
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}
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#define MATERIALISE_EXT_PREDICATE(ext) \
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static inline bool has_ ## ext ## _p(const RISCVCPUConfig *cfg) \
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{ \
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return cfg->ext_ ## ext ; \
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}
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MATERIALISE_EXT_PREDICATE(xtheadba)
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MATERIALISE_EXT_PREDICATE(xtheadbb)
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MATERIALISE_EXT_PREDICATE(xtheadbs)
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MATERIALISE_EXT_PREDICATE(xtheadcmo)
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MATERIALISE_EXT_PREDICATE(xtheadcondmov)
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MATERIALISE_EXT_PREDICATE(xtheadfmemidx)
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MATERIALISE_EXT_PREDICATE(xtheadfmv)
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MATERIALISE_EXT_PREDICATE(xtheadmac)
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MATERIALISE_EXT_PREDICATE(xtheadmemidx)
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MATERIALISE_EXT_PREDICATE(xtheadmempair)
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MATERIALISE_EXT_PREDICATE(xtheadsync)
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MATERIALISE_EXT_PREDICATE(XVentanaCondOps)
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#endif
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