diff options
Diffstat (limited to 'sys/dev/hyperv/vmbus/hv_et.c')
| -rw-r--r-- | sys/dev/hyperv/vmbus/hv_et.c | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/sys/dev/hyperv/vmbus/hv_et.c b/sys/dev/hyperv/vmbus/hv_et.c deleted file mode 100644 index 440b514..0000000 --- a/sys/dev/hyperv/vmbus/hv_et.c +++ /dev/null @@ -1,161 +0,0 @@ -/*- - * Copyright (c) 2015,2016 Microsoft Corp. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/param.h> -#include <sys/bus.h> -#include <sys/kernel.h> -#include <sys/module.h> -#include <sys/proc.h> -#include <sys/systm.h> -#include <sys/smp.h> -#include <sys/time.h> -#include <sys/timeet.h> - -#include "hv_vmbus_priv.h" - -#define HV_TIMER_FREQUENCY (10 * 1000 * 1000LL) /* 100ns period */ -#define HV_MAX_DELTA_TICKS 0xffffffffLL -#define HV_MIN_DELTA_TICKS 1LL - -static struct eventtimer *et; - -static inline uint64_t -sbintime2tick(sbintime_t time) -{ - struct timespec val; - - val = sbttots(time); - return val.tv_sec * HV_TIMER_FREQUENCY + val.tv_nsec / 100; -} - -static int -hv_et_start(struct eventtimer *et, sbintime_t firsttime, sbintime_t periodtime) -{ - union hv_timer_config timer_cfg; - uint64_t current; - - timer_cfg.as_uint64 = 0; - timer_cfg.auto_enable = 1; - timer_cfg.sintx = HV_VMBUS_TIMER_SINT; - - current = rdmsr(HV_X64_MSR_TIME_REF_COUNT); - current += sbintime2tick(firsttime); - - wrmsr(HV_X64_MSR_STIMER0_CONFIG, timer_cfg.as_uint64); - wrmsr(HV_X64_MSR_STIMER0_COUNT, current); - - return (0); -} - -static int -hv_et_stop(struct eventtimer *et) -{ - wrmsr(HV_X64_MSR_STIMER0_CONFIG, 0); - wrmsr(HV_X64_MSR_STIMER0_COUNT, 0); - - return (0); -} - -void -hv_et_intr(struct trapframe *frame) -{ - struct trapframe *oldframe; - struct thread *td; - - if (et->et_active) { - td = curthread; - td->td_intr_nesting_level++; - oldframe = td->td_intr_frame; - td->td_intr_frame = frame; - et->et_event_cb(et, et->et_arg); - td->td_intr_frame = oldframe; - td->td_intr_nesting_level--; - } -} - -static void -hv_et_identify(driver_t *driver, device_t parent) -{ - if (device_find_child(parent, "hv_et", -1) != NULL) - return; - - device_add_child(parent, "hv_et", -1); -} - -static int -hv_et_probe(device_t dev) -{ - device_set_desc(dev, "Hyper-V event timer"); - - return (BUS_PROBE_NOWILDCARD); -} - -static int -hv_et_attach(device_t dev) -{ - /* XXX: need allocate SINT and remove global et */ - et = device_get_softc(dev); - - et->et_name = "Hyper-V"; - et->et_flags = ET_FLAGS_ONESHOT | ET_FLAGS_PERCPU; - et->et_quality = 1000; - et->et_frequency = HV_TIMER_FREQUENCY; - et->et_min_period = HV_MIN_DELTA_TICKS * ((1LL << 32) / HV_TIMER_FREQUENCY); - et->et_max_period = HV_MAX_DELTA_TICKS * ((1LL << 32) / HV_TIMER_FREQUENCY); - et->et_start = hv_et_start; - et->et_stop = hv_et_stop; - et->et_priv = dev; - - return (et_register(et)); -} - -static int -hv_et_detach(device_t dev) -{ - return (et_deregister(et)); -} - -static device_method_t hv_et_methods[] = { - DEVMETHOD(device_identify, hv_et_identify), - DEVMETHOD(device_probe, hv_et_probe), - DEVMETHOD(device_attach, hv_et_attach), - DEVMETHOD(device_detach, hv_et_detach), - - DEVMETHOD_END -}; - -static driver_t hv_et_driver = { - "hv_et", - hv_et_methods, - sizeof(struct eventtimer) -}; - -static devclass_t hv_et_devclass; -DRIVER_MODULE(hv_et, vmbus, hv_et_driver, hv_et_devclass, NULL, 0); -MODULE_VERSION(hv_et, 1); |
