15103e761SPatrick Mooney /*
25103e761SPatrick Mooney * This file and its contents are supplied under the terms of the
35103e761SPatrick Mooney * Common Development and Distribution License ("CDDL"), version 1.0.
45103e761SPatrick Mooney * You may only use this file in accordance with the terms of version
55103e761SPatrick Mooney * 1.0 of the CDDL.
65103e761SPatrick Mooney *
75103e761SPatrick Mooney * A full copy of the text of the CDDL should have accompanied this
85103e761SPatrick Mooney * source. A copy of the CDDL is also available via the Internet at
95103e761SPatrick Mooney * http://www.illumos.org/license/CDDL.
105103e761SPatrick Mooney */
115103e761SPatrick Mooney
125103e761SPatrick Mooney /*
135103e761SPatrick Mooney * Copyright 2022 Oxide Computer Company
145103e761SPatrick Mooney */
155103e761SPatrick Mooney
165103e761SPatrick Mooney #include <stdio.h>
175103e761SPatrick Mooney #include <unistd.h>
185103e761SPatrick Mooney #include <stdlib.h>
195103e761SPatrick Mooney #include <strings.h>
205103e761SPatrick Mooney #include <libgen.h>
215103e761SPatrick Mooney #include <assert.h>
22*32640292SAndy Fiddaman #include <errno.h>
235103e761SPatrick Mooney
245103e761SPatrick Mooney #include <sys/types.h>
255103e761SPatrick Mooney #include <sys/sysmacros.h>
265103e761SPatrick Mooney #include <sys/debug.h>
275103e761SPatrick Mooney #include <sys/vmm.h>
285103e761SPatrick Mooney #include <sys/vmm_dev.h>
295103e761SPatrick Mooney #include <vmmapi.h>
305103e761SPatrick Mooney
315103e761SPatrick Mooney #include "in_guest.h"
325103e761SPatrick Mooney #include "test_defs.h"
335103e761SPatrick Mooney
345103e761SPatrick Mooney typedef struct reading {
355103e761SPatrick Mooney hrtime_t when;
365103e761SPatrick Mooney uint32_t value;
375103e761SPatrick Mooney } reading_t;
385103e761SPatrick Mooney
395103e761SPatrick Mooney static bool
check_reading(reading_t before,reading_t after,uint_t tick_margin,uint_t ppm_margin)405103e761SPatrick Mooney check_reading(reading_t before, reading_t after, uint_t tick_margin,
415103e761SPatrick Mooney uint_t ppm_margin)
425103e761SPatrick Mooney {
435103e761SPatrick Mooney hrtime_t time_delta = after.when - before.when;
445103e761SPatrick Mooney uint32_t tick_delta;
455103e761SPatrick Mooney
465103e761SPatrick Mooney if (after.value < before.value) {
475103e761SPatrick Mooney /* handle rollover */
485103e761SPatrick Mooney tick_delta = (UINT32_MAX - before.value) + after.value;
495103e761SPatrick Mooney } else {
505103e761SPatrick Mooney tick_delta = after.value - before.value;
515103e761SPatrick Mooney }
525103e761SPatrick Mooney
535103e761SPatrick Mooney /* is the number of ticks OK? */
545103e761SPatrick Mooney if (tick_delta < PMTMR_TARGET_TICKS) {
555103e761SPatrick Mooney test_fail_msg("inadequate passage of ticks %u < %u\n",
565103e761SPatrick Mooney tick_delta, PMTMR_TARGET_TICKS);
575103e761SPatrick Mooney } else if ((tick_delta - PMTMR_TARGET_TICKS) > tick_margin) {
585103e761SPatrick Mooney (void) printf("%u ticks outside margin %u\n", tick_delta,
595103e761SPatrick Mooney PMTMR_TARGET_TICKS + tick_margin);
605103e761SPatrick Mooney return (false);
615103e761SPatrick Mooney }
625103e761SPatrick Mooney
635103e761SPatrick Mooney hrtime_t time_target = (tick_delta * NANOSEC) / PMTMR_FREQ;
645103e761SPatrick Mooney
655103e761SPatrick Mooney hrtime_t offset;
665103e761SPatrick Mooney if (time_delta < time_target) {
675103e761SPatrick Mooney offset = time_target - time_delta;
685103e761SPatrick Mooney } else {
695103e761SPatrick Mooney offset = time_delta - time_target;
705103e761SPatrick Mooney }
715103e761SPatrick Mooney uint64_t ppm = (offset * 1000000) / time_target;
725103e761SPatrick Mooney (void) printf("margin limits: ticks=%u ppm=%lu\n",
735103e761SPatrick Mooney tick_margin, ppm_margin);
745103e761SPatrick Mooney (void) printf("%u ticks in %lu ns (error %lu ppm)\n",
755103e761SPatrick Mooney tick_delta, time_delta, ppm);
765103e761SPatrick Mooney if (ppm > ppm_margin) {
775103e761SPatrick Mooney (void) printf("UNACCEPTABLE!\n");
785103e761SPatrick Mooney return (false);
795103e761SPatrick Mooney }
805103e761SPatrick Mooney return (true);
815103e761SPatrick Mooney }
825103e761SPatrick Mooney
835103e761SPatrick Mooney int
main(int argc,char * argv[])845103e761SPatrick Mooney main(int argc, char *argv[])
855103e761SPatrick Mooney {
865103e761SPatrick Mooney const char *test_suite_name = basename(argv[0]);
875103e761SPatrick Mooney struct vmctx *ctx = NULL;
88*32640292SAndy Fiddaman struct vcpu *vcpu;
895103e761SPatrick Mooney int err;
905103e761SPatrick Mooney
915103e761SPatrick Mooney ctx = test_initialize(test_suite_name);
925103e761SPatrick Mooney
93*32640292SAndy Fiddaman if ((vcpu = vm_vcpu_open(ctx, 0)) == NULL) {
94*32640292SAndy Fiddaman test_fail_errno(errno, "Could not open vcpu0");
95*32640292SAndy Fiddaman }
96*32640292SAndy Fiddaman
975103e761SPatrick Mooney err = vm_pmtmr_set_location(ctx, IOP_PMTMR);
985103e761SPatrick Mooney if (err != 0) {
995103e761SPatrick Mooney test_fail_errno(err, "Could not place pmtmr");
1005103e761SPatrick Mooney }
1015103e761SPatrick Mooney
102*32640292SAndy Fiddaman err = test_setup_vcpu(vcpu, MEM_LOC_PAYLOAD, MEM_LOC_STACK);
1035103e761SPatrick Mooney if (err != 0) {
1045103e761SPatrick Mooney test_fail_errno(err, "Could not initialize vcpu0");
1055103e761SPatrick Mooney }
1065103e761SPatrick Mooney
1075103e761SPatrick Mooney struct vm_entry ventry = { 0 };
1085103e761SPatrick Mooney struct vm_exit vexit = { 0 };
1095103e761SPatrick Mooney reading_t readings[2];
1105103e761SPatrick Mooney uint_t nread = 0;
1115103e761SPatrick Mooney uint_t nrepeat = 0;
1125103e761SPatrick Mooney
1135103e761SPatrick Mooney const uint_t margin_ticks = MAX(1, PMTMR_TARGET_TICKS / 10000);
1145103e761SPatrick Mooney const uint_t margin_ppm = 400;
1155103e761SPatrick Mooney
1165103e761SPatrick Mooney do {
1175103e761SPatrick Mooney const enum vm_exit_kind kind =
118*32640292SAndy Fiddaman test_run_vcpu(vcpu, &ventry, &vexit);
1195103e761SPatrick Mooney if (kind == VEK_REENTR) {
1205103e761SPatrick Mooney continue;
1215103e761SPatrick Mooney } else if (kind != VEK_UNHANDLED) {
1225103e761SPatrick Mooney test_fail_vmexit(&vexit);
1235103e761SPatrick Mooney }
1245103e761SPatrick Mooney
1255103e761SPatrick Mooney uint32_t v;
1265103e761SPatrick Mooney if (vexit_match_inout(&vexit, false, IOP_TEST_VALUE, 4, &v)) {
1275103e761SPatrick Mooney readings[nread].when = gethrtime();
1285103e761SPatrick Mooney readings[nread].value = vexit.u.inout.eax;
1295103e761SPatrick Mooney
1305103e761SPatrick Mooney ventry_fulfill_inout(&vexit, &ventry, 0);
1315103e761SPatrick Mooney
1325103e761SPatrick Mooney nread++;
1335103e761SPatrick Mooney if (nread != 2) {
1345103e761SPatrick Mooney continue;
1355103e761SPatrick Mooney }
1365103e761SPatrick Mooney
1375103e761SPatrick Mooney if (check_reading(readings[0], readings[1],
1385103e761SPatrick Mooney margin_ticks, margin_ppm)) {
1395103e761SPatrick Mooney test_pass();
1405103e761SPatrick Mooney } else {
1415103e761SPatrick Mooney nrepeat++;
1425103e761SPatrick Mooney if (nrepeat < 3) {
1435103e761SPatrick Mooney nread = 0;
1445103e761SPatrick Mooney (void) printf("retry %u\n", nrepeat);
1455103e761SPatrick Mooney continue;
1465103e761SPatrick Mooney }
1475103e761SPatrick Mooney test_fail_msg("bad result after %u retries\n",
1485103e761SPatrick Mooney nrepeat);
1495103e761SPatrick Mooney }
1505103e761SPatrick Mooney } else {
1515103e761SPatrick Mooney test_fail_vmexit(&vexit);
1525103e761SPatrick Mooney }
1535103e761SPatrick Mooney
1545103e761SPatrick Mooney } while (true);
1555103e761SPatrick Mooney
1565103e761SPatrick Mooney return (0);
1575103e761SPatrick Mooney }
158