diff options
Diffstat (limited to 'tools/testing/selftests/kvm/riscv')
| -rw-r--r-- | tools/testing/selftests/kvm/riscv/arch_timer.c | 2 | ||||
| -rw-r--r-- | tools/testing/selftests/kvm/riscv/ebreak_test.c | 2 | ||||
| -rw-r--r-- | tools/testing/selftests/kvm/riscv/get-reg-list.c | 140 | ||||
| -rw-r--r-- | tools/testing/selftests/kvm/riscv/sbi_pmu_test.c | 105 |
4 files changed, 219 insertions, 30 deletions
diff --git a/tools/testing/selftests/kvm/riscv/arch_timer.c b/tools/testing/selftests/kvm/riscv/arch_timer.c index 9e370800a6a2..f962fefc48fa 100644 --- a/tools/testing/selftests/kvm/riscv/arch_timer.c +++ b/tools/testing/selftests/kvm/riscv/arch_timer.c @@ -15,7 +15,7 @@ static int timer_irq = IRQ_S_TIMER; -static void guest_irq_handler(struct ex_regs *regs) +static void guest_irq_handler(struct pt_regs *regs) { uint64_t xcnt, xcnt_diff_us, cmp; unsigned int intid = regs->cause & ~CAUSE_IRQ_FLAG; diff --git a/tools/testing/selftests/kvm/riscv/ebreak_test.c b/tools/testing/selftests/kvm/riscv/ebreak_test.c index cfed6c727bfc..739d17befb5a 100644 --- a/tools/testing/selftests/kvm/riscv/ebreak_test.c +++ b/tools/testing/selftests/kvm/riscv/ebreak_test.c @@ -27,7 +27,7 @@ static void guest_code(void) GUEST_DONE(); } -static void guest_breakpoint_handler(struct ex_regs *regs) +static void guest_breakpoint_handler(struct pt_regs *regs) { WRITE_ONCE(sw_bp_addr, regs->epc); regs->epc += 4; diff --git a/tools/testing/selftests/kvm/riscv/get-reg-list.c b/tools/testing/selftests/kvm/riscv/get-reg-list.c index 8515921dfdbf..a0b7dabb5040 100644 --- a/tools/testing/selftests/kvm/riscv/get-reg-list.c +++ b/tools/testing/selftests/kvm/riscv/get-reg-list.c @@ -17,6 +17,15 @@ enum { VCPU_FEATURE_SBI_EXT, }; +enum { + KVM_RISC_V_REG_OFFSET_VSTART = 0, + KVM_RISC_V_REG_OFFSET_VL, + KVM_RISC_V_REG_OFFSET_VTYPE, + KVM_RISC_V_REG_OFFSET_VCSR, + KVM_RISC_V_REG_OFFSET_VLENB, + KVM_RISC_V_REG_OFFSET_MAX, +}; + static bool isa_ext_cant_disable[KVM_RISCV_ISA_EXT_MAX]; bool filter_reg(__u64 reg) @@ -53,8 +62,10 @@ bool filter_reg(__u64 reg) case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_SVNAPOT: case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_SVPBMT: case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_SVVPTC: + case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_ZAAMO: case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_ZABHA: case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_ZACAS: + case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_ZALRSC: case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_ZAWRS: case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_ZBA: case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_ZBB: @@ -141,6 +152,38 @@ bool check_reject_set(int err) return err == EINVAL; } +static int override_vector_reg_size(struct kvm_vcpu *vcpu, struct vcpu_reg_sublist *s, + uint64_t feature) +{ + unsigned long vlenb_reg = 0; + int rc; + u64 reg, size; + + /* Enable V extension so that we can get the vlenb register */ + rc = __vcpu_set_reg(vcpu, feature, 1); + if (rc) + return rc; + + vlenb_reg = vcpu_get_reg(vcpu, s->regs[KVM_RISC_V_REG_OFFSET_VLENB]); + if (!vlenb_reg) { + TEST_FAIL("Can't compute vector register size from zero vlenb\n"); + return -EPERM; + } + + size = __builtin_ctzl(vlenb_reg); + size <<= KVM_REG_SIZE_SHIFT; + + for (int i = 0; i < 32; i++) { + reg = KVM_REG_RISCV | KVM_REG_RISCV_VECTOR | size | KVM_REG_RISCV_VECTOR_REG(i); + s->regs[KVM_RISC_V_REG_OFFSET_MAX + i] = reg; + } + + /* We should assert if disabling failed here while enabling succeeded before */ + vcpu_set_reg(vcpu, feature, 0); + + return 0; +} + void finalize_vcpu(struct kvm_vcpu *vcpu, struct vcpu_reg_list *c) { unsigned long isa_ext_state[KVM_RISCV_ISA_EXT_MAX] = { 0 }; @@ -170,6 +213,13 @@ void finalize_vcpu(struct kvm_vcpu *vcpu, struct vcpu_reg_list *c) if (!s->feature) continue; + if (s->feature == KVM_RISCV_ISA_EXT_V) { + feature = RISCV_ISA_EXT_REG(s->feature); + rc = override_vector_reg_size(vcpu, s, feature); + if (rc) + goto skip; + } + switch (s->feature_type) { case VCPU_FEATURE_ISA_EXT: feature = RISCV_ISA_EXT_REG(s->feature); @@ -184,6 +234,7 @@ void finalize_vcpu(struct kvm_vcpu *vcpu, struct vcpu_reg_list *c) /* Try to enable the desired extension */ __vcpu_set_reg(vcpu, feature, 1); +skip: /* Double check whether the desired extension was enabled */ __TEST_REQUIRE(__vcpu_has_ext(vcpu, feature), "%s not available, skipping tests", s->name); @@ -408,6 +459,35 @@ static const char *fp_d_id_to_str(const char *prefix, __u64 id) return strdup_printf("%lld /* UNKNOWN */", reg_off); } +static const char *vector_id_to_str(const char *prefix, __u64 id) +{ + /* reg_off is the offset into struct __riscv_v_ext_state */ + __u64 reg_off = id & ~(REG_MASK | KVM_REG_RISCV_VECTOR); + int reg_index = 0; + + assert((id & KVM_REG_RISCV_TYPE_MASK) == KVM_REG_RISCV_VECTOR); + + if (reg_off >= KVM_REG_RISCV_VECTOR_REG(0)) + reg_index = reg_off - KVM_REG_RISCV_VECTOR_REG(0); + switch (reg_off) { + case KVM_REG_RISCV_VECTOR_REG(0) ... + KVM_REG_RISCV_VECTOR_REG(31): + return strdup_printf("KVM_REG_RISCV_VECTOR_REG(%d)", reg_index); + case KVM_REG_RISCV_VECTOR_CSR_REG(vstart): + return "KVM_REG_RISCV_VECTOR_CSR_REG(vstart)"; + case KVM_REG_RISCV_VECTOR_CSR_REG(vl): + return "KVM_REG_RISCV_VECTOR_CSR_REG(vl)"; + case KVM_REG_RISCV_VECTOR_CSR_REG(vtype): + return "KVM_REG_RISCV_VECTOR_CSR_REG(vtype)"; + case KVM_REG_RISCV_VECTOR_CSR_REG(vcsr): + return "KVM_REG_RISCV_VECTOR_CSR_REG(vcsr)"; + case KVM_REG_RISCV_VECTOR_CSR_REG(vlenb): + return "KVM_REG_RISCV_VECTOR_CSR_REG(vlenb)"; + } + + return strdup_printf("%lld /* UNKNOWN */", reg_off); +} + #define KVM_ISA_EXT_ARR(ext) \ [KVM_RISCV_ISA_EXT_##ext] = "KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_" #ext @@ -434,8 +514,10 @@ static const char *isa_ext_single_id_to_str(__u64 reg_off) KVM_ISA_EXT_ARR(SVNAPOT), KVM_ISA_EXT_ARR(SVPBMT), KVM_ISA_EXT_ARR(SVVPTC), + KVM_ISA_EXT_ARR(ZAAMO), KVM_ISA_EXT_ARR(ZABHA), KVM_ISA_EXT_ARR(ZACAS), + KVM_ISA_EXT_ARR(ZALRSC), KVM_ISA_EXT_ARR(ZAWRS), KVM_ISA_EXT_ARR(ZBA), KVM_ISA_EXT_ARR(ZBB), @@ -635,6 +717,9 @@ void print_reg(const char *prefix, __u64 id) case KVM_REG_SIZE_U128: reg_size = "KVM_REG_SIZE_U128"; break; + case KVM_REG_SIZE_U256: + reg_size = "KVM_REG_SIZE_U256"; + break; default: printf("\tKVM_REG_RISCV | (%lld << KVM_REG_SIZE_SHIFT) | 0x%llx /* UNKNOWN */,\n", (id & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT, id & ~REG_MASK); @@ -666,6 +751,10 @@ void print_reg(const char *prefix, __u64 id) printf("\tKVM_REG_RISCV | %s | KVM_REG_RISCV_FP_D | %s,\n", reg_size, fp_d_id_to_str(prefix, id)); break; + case KVM_REG_RISCV_VECTOR: + printf("\tKVM_REG_RISCV | %s | KVM_REG_RISCV_VECTOR | %s,\n", + reg_size, vector_id_to_str(prefix, id)); + break; case KVM_REG_RISCV_ISA_EXT: printf("\tKVM_REG_RISCV | %s | KVM_REG_RISCV_ISA_EXT | %s,\n", reg_size, isa_ext_id_to_str(prefix, id)); @@ -870,6 +959,48 @@ static __u64 fp_d_regs[] = { KVM_REG_RISCV | KVM_REG_SIZE_ULONG | KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_D, }; +/* Define a default vector registers with length. This will be overwritten at runtime */ +static __u64 vector_regs[] = { + KVM_REG_RISCV | KVM_REG_SIZE_ULONG | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_CSR_REG(vstart), + KVM_REG_RISCV | KVM_REG_SIZE_ULONG | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_CSR_REG(vl), + KVM_REG_RISCV | KVM_REG_SIZE_ULONG | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_CSR_REG(vtype), + KVM_REG_RISCV | KVM_REG_SIZE_ULONG | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_CSR_REG(vcsr), + KVM_REG_RISCV | KVM_REG_SIZE_ULONG | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_CSR_REG(vlenb), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(0), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(1), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(2), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(3), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(4), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(5), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(6), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(7), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(8), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(9), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(10), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(11), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(12), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(13), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(14), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(15), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(16), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(17), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(18), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(19), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(20), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(21), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(22), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(23), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(24), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(25), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(26), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(27), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(28), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(29), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(30), + KVM_REG_RISCV | KVM_REG_SIZE_U128 | KVM_REG_RISCV_VECTOR | KVM_REG_RISCV_VECTOR_REG(31), + KVM_REG_RISCV | KVM_REG_SIZE_ULONG | KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_V, +}; + #define SUBLIST_BASE \ {"base", .regs = base_regs, .regs_n = ARRAY_SIZE(base_regs), \ .skips_set = base_skips_set, .skips_set_n = ARRAY_SIZE(base_skips_set),} @@ -894,6 +1025,9 @@ static __u64 fp_d_regs[] = { {"fp_d", .feature = KVM_RISCV_ISA_EXT_D, .regs = fp_d_regs, \ .regs_n = ARRAY_SIZE(fp_d_regs),} +#define SUBLIST_V \ + {"v", .feature = KVM_RISCV_ISA_EXT_V, .regs = vector_regs, .regs_n = ARRAY_SIZE(vector_regs),} + #define KVM_ISA_EXT_SIMPLE_CONFIG(ext, extu) \ static __u64 regs_##ext[] = { \ KVM_REG_RISCV | KVM_REG_SIZE_ULONG | \ @@ -962,6 +1096,7 @@ KVM_SBI_EXT_SIMPLE_CONFIG(susp, SUSP); KVM_ISA_EXT_SUBLIST_CONFIG(aia, AIA); KVM_ISA_EXT_SUBLIST_CONFIG(fp_f, FP_F); KVM_ISA_EXT_SUBLIST_CONFIG(fp_d, FP_D); +KVM_ISA_EXT_SUBLIST_CONFIG(v, V); KVM_ISA_EXT_SIMPLE_CONFIG(h, H); KVM_ISA_EXT_SIMPLE_CONFIG(smnpm, SMNPM); KVM_ISA_EXT_SUBLIST_CONFIG(smstateen, SMSTATEEN); @@ -974,8 +1109,10 @@ KVM_ISA_EXT_SIMPLE_CONFIG(svinval, SVINVAL); KVM_ISA_EXT_SIMPLE_CONFIG(svnapot, SVNAPOT); KVM_ISA_EXT_SIMPLE_CONFIG(svpbmt, SVPBMT); KVM_ISA_EXT_SIMPLE_CONFIG(svvptc, SVVPTC); +KVM_ISA_EXT_SIMPLE_CONFIG(zaamo, ZAAMO); KVM_ISA_EXT_SIMPLE_CONFIG(zabha, ZABHA); KVM_ISA_EXT_SIMPLE_CONFIG(zacas, ZACAS); +KVM_ISA_EXT_SIMPLE_CONFIG(zalrsc, ZALRSC); KVM_ISA_EXT_SIMPLE_CONFIG(zawrs, ZAWRS); KVM_ISA_EXT_SIMPLE_CONFIG(zba, ZBA); KVM_ISA_EXT_SIMPLE_CONFIG(zbb, ZBB); @@ -1034,6 +1171,7 @@ struct vcpu_reg_list *vcpu_configs[] = { &config_fp_f, &config_fp_d, &config_h, + &config_v, &config_smnpm, &config_smstateen, &config_sscofpmf, @@ -1045,8 +1183,10 @@ struct vcpu_reg_list *vcpu_configs[] = { &config_svnapot, &config_svpbmt, &config_svvptc, + &config_zaamo, &config_zabha, &config_zacas, + &config_zalrsc, &config_zawrs, &config_zba, &config_zbb, diff --git a/tools/testing/selftests/kvm/riscv/sbi_pmu_test.c b/tools/testing/selftests/kvm/riscv/sbi_pmu_test.c index f45c0ecc902d..924a335d2262 100644 --- a/tools/testing/selftests/kvm/riscv/sbi_pmu_test.c +++ b/tools/testing/selftests/kvm/riscv/sbi_pmu_test.c @@ -39,7 +39,13 @@ static bool illegal_handler_invoked; #define SBI_PMU_TEST_SNAPSHOT BIT(2) #define SBI_PMU_TEST_OVERFLOW BIT(3) -static int disabled_tests; +#define SBI_PMU_OVERFLOW_IRQNUM_DEFAULT 5 +struct test_args { + int disabled_tests; + int overflow_irqnum; +}; + +static struct test_args targs; unsigned long pmu_csr_read_num(int csr_num) { @@ -67,7 +73,6 @@ unsigned long pmu_csr_read_num(int csr_num) switch (csr_num) { switchcase_csr_read_32(CSR_CYCLE, ret) - switchcase_csr_read_32(CSR_CYCLEH, ret) default : break; } @@ -118,26 +123,44 @@ static void stop_counter(unsigned long counter, unsigned long stop_flags) ret = sbi_ecall(SBI_EXT_PMU, SBI_EXT_PMU_COUNTER_STOP, counter, 1, stop_flags, 0, 0, 0); - __GUEST_ASSERT(ret.error == 0, "Unable to stop counter %ld error %ld\n", - counter, ret.error); + __GUEST_ASSERT(ret.error == 0 || ret.error == SBI_ERR_ALREADY_STOPPED, + "Unable to stop counter %ld error %ld\n", counter, ret.error); } -static void guest_illegal_exception_handler(struct ex_regs *regs) +static void guest_illegal_exception_handler(struct pt_regs *regs) { + unsigned long insn; + int opcode, csr_num, funct3; + __GUEST_ASSERT(regs->cause == EXC_INST_ILLEGAL, "Unexpected exception handler %lx\n", regs->cause); + insn = regs->badaddr; + opcode = (insn & INSN_OPCODE_MASK) >> INSN_OPCODE_SHIFT; + __GUEST_ASSERT(opcode == INSN_OPCODE_SYSTEM, + "Unexpected instruction with opcode 0x%x insn 0x%lx\n", opcode, insn); + + csr_num = GET_CSR_NUM(insn); + funct3 = GET_RM(insn); + /* Validate if it is a CSR read/write operation */ + __GUEST_ASSERT(funct3 <= 7 && (funct3 != 0 && funct3 != 4), + "Unexpected system opcode with funct3 0x%x csr_num 0x%x\n", + funct3, csr_num); + + /* Validate if it is a HPMCOUNTER CSR operation */ + __GUEST_ASSERT((csr_num >= CSR_CYCLE && csr_num <= CSR_HPMCOUNTER31), + "Unexpected csr_num 0x%x\n", csr_num); + illegal_handler_invoked = true; /* skip the trapping instruction */ regs->epc += 4; } -static void guest_irq_handler(struct ex_regs *regs) +static void guest_irq_handler(struct pt_regs *regs) { unsigned int irq_num = regs->cause & ~CAUSE_IRQ_FLAG; struct riscv_pmu_snapshot_data *snapshot_data = snapshot_gva; unsigned long overflown_mask; - unsigned long counter_val = 0; /* Validate that we are in the correct irq handler */ GUEST_ASSERT_EQ(irq_num, IRQ_PMU_OVF); @@ -151,10 +174,6 @@ static void guest_irq_handler(struct ex_regs *regs) GUEST_ASSERT(overflown_mask & 0x01); WRITE_ONCE(vcpu_shared_irq_count, vcpu_shared_irq_count+1); - - counter_val = READ_ONCE(snapshot_data->ctr_values[0]); - /* Now start the counter to mimick the real driver behavior */ - start_counter(counter_in_use, SBI_PMU_START_FLAG_SET_INIT_VALUE, counter_val); } static unsigned long get_counter_index(unsigned long cbase, unsigned long cmask, @@ -479,7 +498,7 @@ static void test_pmu_events_snaphost(void) static void test_pmu_events_overflow(void) { - int num_counters = 0; + int num_counters = 0, i = 0; /* Verify presence of SBI PMU and minimum requrired SBI version */ verify_sbi_requirement_assert(); @@ -496,11 +515,15 @@ static void test_pmu_events_overflow(void) * Qemu supports overflow for cycle/instruction. * This test may fail on any platform that do not support overflow for these two events. */ - test_pmu_event_overflow(SBI_PMU_HW_CPU_CYCLES); - GUEST_ASSERT_EQ(vcpu_shared_irq_count, 1); + for (i = 0; i < targs.overflow_irqnum; i++) + test_pmu_event_overflow(SBI_PMU_HW_CPU_CYCLES); + GUEST_ASSERT_EQ(vcpu_shared_irq_count, targs.overflow_irqnum); - test_pmu_event_overflow(SBI_PMU_HW_INSTRUCTIONS); - GUEST_ASSERT_EQ(vcpu_shared_irq_count, 2); + vcpu_shared_irq_count = 0; + + for (i = 0; i < targs.overflow_irqnum; i++) + test_pmu_event_overflow(SBI_PMU_HW_INSTRUCTIONS); + GUEST_ASSERT_EQ(vcpu_shared_irq_count, targs.overflow_irqnum); GUEST_DONE(); } @@ -609,7 +632,11 @@ static void test_vm_events_overflow(void *guest_code) vcpu_init_vector_tables(vcpu); /* Initialize guest timer frequency. */ timer_freq = vcpu_get_reg(vcpu, RISCV_TIMER_REG(frequency)); + + /* Export the shared variables to the guest */ sync_global_to_guest(vm, timer_freq); + sync_global_to_guest(vm, vcpu_shared_irq_count); + sync_global_to_guest(vm, targs); run_vcpu(vcpu); @@ -618,28 +645,38 @@ static void test_vm_events_overflow(void *guest_code) static void test_print_help(char *name) { - pr_info("Usage: %s [-h] [-d <test name>]\n", name); - pr_info("\t-d: Test to disable. Available tests are 'basic', 'events', 'snapshot', 'overflow'\n"); + pr_info("Usage: %s [-h] [-t <test name>] [-n <number of LCOFI interrupt for overflow test>]\n", + name); + pr_info("\t-t: Test to run (default all). Available tests are 'basic', 'events', 'snapshot', 'overflow'\n"); + pr_info("\t-n: Number of LCOFI interrupt to trigger for each event in overflow test (default: %d)\n", + SBI_PMU_OVERFLOW_IRQNUM_DEFAULT); pr_info("\t-h: print this help screen\n"); } static bool parse_args(int argc, char *argv[]) { int opt; + int temp_disabled_tests = SBI_PMU_TEST_BASIC | SBI_PMU_TEST_EVENTS | SBI_PMU_TEST_SNAPSHOT | + SBI_PMU_TEST_OVERFLOW; + int overflow_interrupts = 0; - while ((opt = getopt(argc, argv, "hd:")) != -1) { + while ((opt = getopt(argc, argv, "ht:n:")) != -1) { switch (opt) { - case 'd': + case 't': if (!strncmp("basic", optarg, 5)) - disabled_tests |= SBI_PMU_TEST_BASIC; + temp_disabled_tests &= ~SBI_PMU_TEST_BASIC; else if (!strncmp("events", optarg, 6)) - disabled_tests |= SBI_PMU_TEST_EVENTS; + temp_disabled_tests &= ~SBI_PMU_TEST_EVENTS; else if (!strncmp("snapshot", optarg, 8)) - disabled_tests |= SBI_PMU_TEST_SNAPSHOT; + temp_disabled_tests &= ~SBI_PMU_TEST_SNAPSHOT; else if (!strncmp("overflow", optarg, 8)) - disabled_tests |= SBI_PMU_TEST_OVERFLOW; + temp_disabled_tests &= ~SBI_PMU_TEST_OVERFLOW; else goto done; + targs.disabled_tests = temp_disabled_tests; + break; + case 'n': + overflow_interrupts = atoi_positive("Number of LCOFI", optarg); break; case 'h': default: @@ -647,6 +684,15 @@ static bool parse_args(int argc, char *argv[]) } } + if (overflow_interrupts > 0) { + if (targs.disabled_tests & SBI_PMU_TEST_OVERFLOW) { + pr_info("-n option is only available for overflow test\n"); + goto done; + } else { + targs.overflow_irqnum = overflow_interrupts; + } + } + return true; done: test_print_help(argv[0]); @@ -655,25 +701,28 @@ done: int main(int argc, char *argv[]) { + targs.disabled_tests = 0; + targs.overflow_irqnum = SBI_PMU_OVERFLOW_IRQNUM_DEFAULT; + if (!parse_args(argc, argv)) exit(KSFT_SKIP); - if (!(disabled_tests & SBI_PMU_TEST_BASIC)) { + if (!(targs.disabled_tests & SBI_PMU_TEST_BASIC)) { test_vm_basic_test(test_pmu_basic_sanity); pr_info("SBI PMU basic test : PASS\n"); } - if (!(disabled_tests & SBI_PMU_TEST_EVENTS)) { + if (!(targs.disabled_tests & SBI_PMU_TEST_EVENTS)) { test_vm_events_test(test_pmu_events); pr_info("SBI PMU event verification test : PASS\n"); } - if (!(disabled_tests & SBI_PMU_TEST_SNAPSHOT)) { + if (!(targs.disabled_tests & SBI_PMU_TEST_SNAPSHOT)) { test_vm_events_snapshot_test(test_pmu_events_snaphost); pr_info("SBI PMU event verification with snapshot test : PASS\n"); } - if (!(disabled_tests & SBI_PMU_TEST_OVERFLOW)) { + if (!(targs.disabled_tests & SBI_PMU_TEST_OVERFLOW)) { test_vm_events_overflow(test_pmu_events_overflow); pr_info("SBI PMU event verification with overflow test : PASS\n"); } |