Lines Matching full:np
148 static unsigned long n2rng_control_settle_v2(struct n2rng *np, int unit) in n2rng_control_settle_v2() argument
150 unsigned long ra = __pa(&np->scratch_control[0]); in n2rng_control_settle_v2()
155 static unsigned long n2rng_write_ctl_one(struct n2rng *np, int unit, in n2rng_write_ctl_one() argument
163 if (np->hvapi_major == 1) { in n2rng_write_ctl_one()
170 hv_err = n2rng_control_settle_v2(np, unit); in n2rng_write_ctl_one()
202 static unsigned long n2rng_read_diag_data_one(struct n2rng *np, in n2rng_read_diag_data_one() argument
210 if (np->hvapi_major == 1) { in n2rng_read_diag_data_one()
221 static int n2rng_generic_read_diag_data(struct n2rng *np, in n2rng_generic_read_diag_data() argument
230 hv_err = n2rng_read_diag_data_one(np, unit, in n2rng_generic_read_diag_data()
250 static int n2rng_generic_write_control(struct n2rng *np, in n2rng_generic_write_control() argument
259 hv_err = n2rng_write_ctl_one(np, unit, state, control_ra, in n2rng_generic_write_control()
260 np->wd_timeo, &ticks); in n2rng_generic_write_control()
280 static int n2rng_try_read_ctl(struct n2rng *np) in n2rng_try_read_ctl() argument
285 if (np->hvapi_major == 1) { in n2rng_try_read_ctl()
307 static u64 n2rng_control_default(struct n2rng *np, int ctl) in n2rng_control_default() argument
311 if (np->data->chip_version == 1) { in n2rng_control_default()
359 static void n2rng_control_swstate_init(struct n2rng *np) in n2rng_control_swstate_init() argument
363 np->flags |= N2RNG_FLAG_CONTROL; in n2rng_control_swstate_init()
365 np->health_check_sec = N2RNG_HEALTH_CHECK_SEC_DEFAULT; in n2rng_control_swstate_init()
366 np->accum_cycles = N2RNG_ACCUM_CYCLES_DEFAULT; in n2rng_control_swstate_init()
367 np->wd_timeo = N2RNG_WD_TIMEO_DEFAULT; in n2rng_control_swstate_init()
369 for (i = 0; i < np->num_units; i++) { in n2rng_control_swstate_init()
370 struct n2rng_unit *up = &np->units[i]; in n2rng_control_swstate_init()
372 up->control[0] = n2rng_control_default(np, 0); in n2rng_control_swstate_init()
373 up->control[1] = n2rng_control_default(np, 1); in n2rng_control_swstate_init()
374 up->control[2] = n2rng_control_default(np, 2); in n2rng_control_swstate_init()
375 up->control[3] = n2rng_control_default(np, 3); in n2rng_control_swstate_init()
378 np->hv_state = HV_RNG_STATE_UNCONFIGURED; in n2rng_control_swstate_init()
381 static int n2rng_grab_diag_control(struct n2rng *np) in n2rng_grab_diag_control() argument
387 err = n2rng_try_read_ctl(np); in n2rng_grab_diag_control()
392 dev_err(&np->op->dev, in n2rng_grab_diag_control()
403 static int n2rng_init_control(struct n2rng *np) in n2rng_init_control() argument
405 int err = n2rng_grab_diag_control(np); in n2rng_init_control()
415 n2rng_control_swstate_init(np); in n2rng_init_control()
422 struct n2rng *np = (struct n2rng *) rng->priv; in n2rng_data_read() local
423 unsigned long ra = __pa(&np->test_data); in n2rng_data_read()
426 if (!(np->flags & N2RNG_FLAG_READY)) { in n2rng_data_read()
428 } else if (np->flags & N2RNG_FLAG_BUFFER_VALID) { in n2rng_data_read()
429 np->flags &= ~N2RNG_FLAG_BUFFER_VALID; in n2rng_data_read()
430 *data = np->buffer; in n2rng_data_read()
435 np->flags |= N2RNG_FLAG_BUFFER_VALID; in n2rng_data_read()
436 np->buffer = np->test_data >> 32; in n2rng_data_read()
437 *data = np->test_data & 0xffffffff; in n2rng_data_read()
440 dev_err(&np->op->dev, "RNG error, retesting\n"); in n2rng_data_read()
441 np->flags &= ~N2RNG_FLAG_READY; in n2rng_data_read()
442 if (!(np->flags & N2RNG_FLAG_SHUTDOWN)) in n2rng_data_read()
443 schedule_delayed_work(&np->work, 0); in n2rng_data_read()
456 static int n2rng_guest_check(struct n2rng *np) in n2rng_guest_check() argument
458 unsigned long ra = __pa(&np->test_data); in n2rng_guest_check()
463 static int n2rng_entropy_diag_read(struct n2rng *np, unsigned long unit, in n2rng_entropy_diag_read() argument
473 err = n2rng_generic_write_control(np, pre_ctl_ra, unit, pre_state); in n2rng_entropy_diag_read()
477 err = n2rng_generic_read_diag_data(np, unit, in n2rng_entropy_diag_read()
480 (void) n2rng_generic_write_control(np, post_ctl_ra, unit, in n2rng_entropy_diag_read()
501 static int n2rng_test_buffer_find(struct n2rng *np, u64 val) in n2rng_test_buffer_find() argument
507 if (np->test_buffer[i] == val) in n2rng_test_buffer_find()
513 static void n2rng_dump_test_buffer(struct n2rng *np) in n2rng_dump_test_buffer() argument
518 dev_err(&np->op->dev, "Test buffer slot %d [0x%016llx]\n", in n2rng_dump_test_buffer()
519 i, np->test_buffer[i]); in n2rng_dump_test_buffer()
522 static int n2rng_check_selftest_buffer(struct n2rng *np, unsigned long unit) in n2rng_check_selftest_buffer() argument
527 switch (np->data->id) { in n2rng_check_selftest_buffer()
541 matches += n2rng_test_buffer_find(np, val); in n2rng_check_selftest_buffer()
550 dev_err(&np->op->dev, "Selftest failed on unit %lu\n", unit); in n2rng_check_selftest_buffer()
551 n2rng_dump_test_buffer(np); in n2rng_check_selftest_buffer()
553 dev_info(&np->op->dev, "Selftest passed on unit %lu\n", unit); in n2rng_check_selftest_buffer()
558 static int n2rng_control_selftest(struct n2rng *np, unsigned long unit) in n2rng_control_selftest() argument
563 switch (np->data->id) { in n2rng_control_selftest()
583 np->test_control[0] = base; in n2rng_control_selftest()
584 np->test_control[1] = base; in n2rng_control_selftest()
585 np->test_control[2] = base; in n2rng_control_selftest()
586 np->test_control[3] = base3; in n2rng_control_selftest()
588 err = n2rng_entropy_diag_read(np, unit, np->test_control, in n2rng_control_selftest()
590 np->test_buffer, in n2rng_control_selftest()
591 sizeof(np->test_buffer), in n2rng_control_selftest()
592 &np->units[unit].control[0], in n2rng_control_selftest()
593 np->hv_state); in n2rng_control_selftest()
597 return n2rng_check_selftest_buffer(np, unit); in n2rng_control_selftest()
600 static int n2rng_control_check(struct n2rng *np) in n2rng_control_check() argument
604 for (i = 0; i < np->num_units; i++) { in n2rng_control_check()
605 int err = n2rng_control_selftest(np, i); in n2rng_control_check()
615 static int n2rng_control_configure_units(struct n2rng *np) in n2rng_control_configure_units() argument
620 for (unit = 0; unit < np->num_units; unit++) { in n2rng_control_configure_units()
621 struct n2rng_unit *up = &np->units[unit]; in n2rng_control_configure_units()
626 if (np->data->chip_version == 1) { in n2rng_control_configure_units()
627 base = ((np->accum_cycles << RNG_v1_CTL_WAIT_SHIFT) | in n2rng_control_configure_units()
632 base = ((np->accum_cycles << RNG_v2_CTL_WAIT_SHIFT) | in n2rng_control_configure_units()
651 err = n2rng_generic_write_control(np, ctl_ra, unit, in n2rng_control_configure_units()
662 struct n2rng *np = container_of(work, struct n2rng, work.work); in n2rng_work() local
666 if (!(np->flags & N2RNG_FLAG_CONTROL)) { in n2rng_work()
667 err = n2rng_guest_check(np); in n2rng_work()
670 err = n2rng_control_check(np); in n2rng_work()
674 err = n2rng_control_configure_units(np); in n2rng_work()
678 np->flags |= N2RNG_FLAG_READY; in n2rng_work()
679 dev_info(&np->op->dev, "RNG ready\n"); in n2rng_work()
683 dev_err(&np->op->dev, "Self-test retries failed, RNG not ready\n"); in n2rng_work()
684 else if (err && !(np->flags & N2RNG_FLAG_SHUTDOWN)) in n2rng_work()
685 schedule_delayed_work(&np->work, HZ * 2); in n2rng_work()
700 struct n2rng *np; in n2rng_probe() local
703 np = devm_kzalloc(&op->dev, sizeof(*np), GFP_KERNEL); in n2rng_probe()
704 if (!np) in n2rng_probe()
706 np->op = op; in n2rng_probe()
707 np->data = (struct n2rng_template *)device_get_match_data(&op->dev); in n2rng_probe()
709 INIT_DELAYED_WORK(&np->work, n2rng_work); in n2rng_probe()
711 if (np->data->multi_capable) in n2rng_probe()
712 np->flags |= N2RNG_FLAG_MULTI; in n2rng_probe()
715 np->hvapi_major = 2; in n2rng_probe()
717 np->hvapi_major, in n2rng_probe()
718 &np->hvapi_minor)) { in n2rng_probe()
719 np->hvapi_major = 1; in n2rng_probe()
721 np->hvapi_major, in n2rng_probe()
722 &np->hvapi_minor)) { in n2rng_probe()
729 if (np->flags & N2RNG_FLAG_MULTI) { in n2rng_probe()
730 if (np->hvapi_major < 2) { in n2rng_probe()
733 np->hvapi_major); in n2rng_probe()
736 np->num_units = of_getintprop_default(op->dev.of_node, in n2rng_probe()
738 if (!np->num_units) { in n2rng_probe()
743 np->num_units = 1; in n2rng_probe()
747 np->hvapi_major, np->hvapi_minor); in n2rng_probe()
748 np->units = devm_kcalloc(&op->dev, np->num_units, sizeof(*np->units), in n2rng_probe()
751 if (!np->units) in n2rng_probe()
754 err = n2rng_init_control(np); in n2rng_probe()
759 ((np->flags & N2RNG_FLAG_MULTI) ? in n2rng_probe()
761 np->num_units); in n2rng_probe()
763 np->hwrng.name = DRV_MODULE_NAME; in n2rng_probe()
764 np->hwrng.data_read = n2rng_data_read; in n2rng_probe()
765 np->hwrng.priv = (unsigned long) np; in n2rng_probe()
767 err = devm_hwrng_register(&op->dev, &np->hwrng); in n2rng_probe()
771 platform_set_drvdata(op, np); in n2rng_probe()
773 schedule_delayed_work(&np->work, 0); in n2rng_probe()
786 struct n2rng *np = platform_get_drvdata(op); in n2rng_remove() local
788 np->flags |= N2RNG_FLAG_SHUTDOWN; in n2rng_remove()
790 cancel_delayed_work_sync(&np->work); in n2rng_remove()