*
* Authors: Ben Skeggs
*/
-#include "nv04.h"
+#include "priv.h"
+#include "regsnv04.h"
-#include <core/device.h>
-
-static u64
-nv04_timer_read(struct nvkm_timer *ptimer)
+void
+nv04_timer_time(struct nvkm_timer *tmr, u64 time)
{
- struct nv04_timer_priv *priv = (void *)ptimer;
- u32 hi, lo;
+ struct nvkm_subdev *subdev = &tmr->subdev;
+ struct nvkm_device *device = subdev->device;
+ u32 hi = upper_32_bits(time);
+ u32 lo = lower_32_bits(time);
- do {
- hi = nv_rd32(priv, NV04_PTIMER_TIME_1);
- lo = nv_rd32(priv, NV04_PTIMER_TIME_0);
- } while (hi != nv_rd32(priv, NV04_PTIMER_TIME_1));
+ nvkm_debug(subdev, "time low : %08x\n", lo);
+ nvkm_debug(subdev, "time high : %08x\n", hi);
- return ((u64)hi << 32 | lo);
+ nvkm_wr32(device, NV04_PTIMER_TIME_1, hi);
+ nvkm_wr32(device, NV04_PTIMER_TIME_0, lo);
}
-static void
-nv04_timer_alarm_trigger(struct nvkm_timer *ptimer)
+u64
+nv04_timer_read(struct nvkm_timer *tmr)
{
- struct nv04_timer_priv *priv = (void *)ptimer;
- struct nvkm_alarm *alarm, *atemp;
- unsigned long flags;
- LIST_HEAD(exec);
-
- /* move any due alarms off the pending list */
- spin_lock_irqsave(&priv->lock, flags);
- list_for_each_entry_safe(alarm, atemp, &priv->alarms, head) {
- if (alarm->timestamp <= ptimer->read(ptimer))
- list_move_tail(&alarm->head, &exec);
- }
+ struct nvkm_device *device = tmr->subdev.device;
+ u32 hi, lo;
- /* reschedule interrupt for next alarm time */
- if (!list_empty(&priv->alarms)) {
- alarm = list_first_entry(&priv->alarms, typeof(*alarm), head);
- nv_wr32(priv, NV04_PTIMER_ALARM_0, alarm->timestamp);
- nv_wr32(priv, NV04_PTIMER_INTR_EN_0, 0x00000001);
- } else {
- nv_wr32(priv, NV04_PTIMER_INTR_EN_0, 0x00000000);
- }
- spin_unlock_irqrestore(&priv->lock, flags);
+ do {
+ hi = nvkm_rd32(device, NV04_PTIMER_TIME_1);
+ lo = nvkm_rd32(device, NV04_PTIMER_TIME_0);
+ } while (hi != nvkm_rd32(device, NV04_PTIMER_TIME_1));
- /* execute any pending alarm handlers */
- list_for_each_entry_safe(alarm, atemp, &exec, head) {
- list_del_init(&alarm->head);
- alarm->func(alarm);
- }
+ return ((u64)hi << 32 | lo);
}
-static void
-nv04_timer_alarm(struct nvkm_timer *ptimer, u64 time, struct nvkm_alarm *alarm)
+void
+nv04_timer_alarm_fini(struct nvkm_timer *tmr)
{
- struct nv04_timer_priv *priv = (void *)ptimer;
- struct nvkm_alarm *list;
- unsigned long flags;
-
- alarm->timestamp = ptimer->read(ptimer) + time;
-
- /* append new alarm to list, in soonest-alarm-first order */
- spin_lock_irqsave(&priv->lock, flags);
- if (!time) {
- if (!list_empty(&alarm->head))
- list_del(&alarm->head);
- } else {
- list_for_each_entry(list, &priv->alarms, head) {
- if (list->timestamp > alarm->timestamp)
- break;
- }
- list_add_tail(&alarm->head, &list->head);
- }
- spin_unlock_irqrestore(&priv->lock, flags);
-
- /* process pending alarms */
- nv04_timer_alarm_trigger(ptimer);
+ struct nvkm_device *device = tmr->subdev.device;
+ nvkm_wr32(device, NV04_PTIMER_INTR_EN_0, 0x00000000);
}
-static void
-nv04_timer_alarm_cancel(struct nvkm_timer *ptimer, struct nvkm_alarm *alarm)
+void
+nv04_timer_alarm_init(struct nvkm_timer *tmr, u32 time)
{
- struct nv04_timer_priv *priv = (void *)ptimer;
- unsigned long flags;
- spin_lock_irqsave(&priv->lock, flags);
- list_del_init(&alarm->head);
- spin_unlock_irqrestore(&priv->lock, flags);
+ struct nvkm_device *device = tmr->subdev.device;
+ nvkm_wr32(device, NV04_PTIMER_ALARM_0, time);
+ nvkm_wr32(device, NV04_PTIMER_INTR_EN_0, 0x00000001);
}
-static void
-nv04_timer_intr(struct nvkm_subdev *subdev)
+void
+nv04_timer_intr(struct nvkm_timer *tmr)
{
- struct nv04_timer_priv *priv = (void *)subdev;
- u32 stat = nv_rd32(priv, NV04_PTIMER_INTR_0);
+ struct nvkm_subdev *subdev = &tmr->subdev;
+ struct nvkm_device *device = subdev->device;
+ u32 stat = nvkm_rd32(device, NV04_PTIMER_INTR_0);
if (stat & 0x00000001) {
- nv04_timer_alarm_trigger(&priv->base);
- nv_wr32(priv, NV04_PTIMER_INTR_0, 0x00000001);
+ nvkm_timer_alarm_trigger(tmr);
+ nvkm_wr32(device, NV04_PTIMER_INTR_0, 0x00000001);
stat &= ~0x00000001;
}
if (stat) {
- nv_error(priv, "unknown stat 0x%08x\n", stat);
- nv_wr32(priv, NV04_PTIMER_INTR_0, stat);
+ nvkm_error(subdev, "intr %08x\n", stat);
+ nvkm_wr32(device, NV04_PTIMER_INTR_0, stat);
}
}
-int
-nv04_timer_fini(struct nvkm_object *object, bool suspend)
-{
- struct nv04_timer_priv *priv = (void *)object;
- if (suspend)
- priv->suspend_time = nv04_timer_read(&priv->base);
- nv_wr32(priv, NV04_PTIMER_INTR_EN_0, 0x00000000);
- return nvkm_timer_fini(&priv->base, suspend);
-}
-
-static int
-nv04_timer_init(struct nvkm_object *object)
+static void
+nv04_timer_init(struct nvkm_timer *tmr)
{
- struct nvkm_device *device = nv_device(object);
- struct nv04_timer_priv *priv = (void *)object;
- u32 m = 1, f, n, d, lo, hi;
- int ret;
-
- ret = nvkm_timer_init(&priv->base);
- if (ret)
- return ret;
+ struct nvkm_subdev *subdev = &tmr->subdev;
+ struct nvkm_device *device = subdev->device;
+ u32 f = 0; /*XXX: nvclk */
+ u32 n, d;
/* aim for 31.25MHz, which gives us nanosecond timestamps */
d = 1000000 / 32;
-
- /* determine base clock for timer source */
-#if 0 /*XXX*/
- if (device->chipset < 0x40) {
- n = nvkm_hw_get_clock(device, PLL_CORE);
- } else
-#endif
- if (device->chipset <= 0x40) {
- /*XXX: figure this out */
- f = -1;
- n = 0;
- } else {
- f = device->crystal;
- n = f;
- while (n < (d * 2)) {
- n += (n / m);
- m++;
- }
-
- nv_wr32(priv, 0x009220, m - 1);
- }
-
- if (!n) {
- nv_warn(priv, "unknown input clock freq\n");
- if (!nv_rd32(priv, NV04_PTIMER_NUMERATOR) ||
- !nv_rd32(priv, NV04_PTIMER_DENOMINATOR)) {
- nv_wr32(priv, NV04_PTIMER_NUMERATOR, 1);
- nv_wr32(priv, NV04_PTIMER_DENOMINATOR, 1);
+ n = f;
+
+ if (!f) {
+ n = nvkm_rd32(device, NV04_PTIMER_NUMERATOR);
+ d = nvkm_rd32(device, NV04_PTIMER_DENOMINATOR);
+ if (!n || !d) {
+ n = 1;
+ d = 1;
}
- return 0;
+ nvkm_warn(subdev, "unknown input clock freq\n");
}
/* reduce ratio to acceptable values */
d >>= 1;
}
- /* restore the time before suspend */
- lo = priv->suspend_time;
- hi = (priv->suspend_time >> 32);
+ nvkm_debug(subdev, "input frequency : %dHz\n", f);
+ nvkm_debug(subdev, "numerator : %08x\n", n);
+ nvkm_debug(subdev, "denominator : %08x\n", d);
+ nvkm_debug(subdev, "timer frequency : %dHz\n", f * d / n);
- nv_debug(priv, "input frequency : %dHz\n", f);
- nv_debug(priv, "input multiplier: %d\n", m);
- nv_debug(priv, "numerator : 0x%08x\n", n);
- nv_debug(priv, "denominator : 0x%08x\n", d);
- nv_debug(priv, "timer frequency : %dHz\n", (f * m) * d / n);
- nv_debug(priv, "time low : 0x%08x\n", lo);
- nv_debug(priv, "time high : 0x%08x\n", hi);
-
- nv_wr32(priv, NV04_PTIMER_NUMERATOR, n);
- nv_wr32(priv, NV04_PTIMER_DENOMINATOR, d);
- nv_wr32(priv, NV04_PTIMER_INTR_0, 0xffffffff);
- nv_wr32(priv, NV04_PTIMER_INTR_EN_0, 0x00000000);
- nv_wr32(priv, NV04_PTIMER_TIME_1, hi);
- nv_wr32(priv, NV04_PTIMER_TIME_0, lo);
- return 0;
+ nvkm_wr32(device, NV04_PTIMER_NUMERATOR, n);
+ nvkm_wr32(device, NV04_PTIMER_DENOMINATOR, d);
}
-void
-nv04_timer_dtor(struct nvkm_object *object)
-{
- struct nv04_timer_priv *priv = (void *)object;
- return nvkm_timer_destroy(&priv->base);
-}
+static const struct nvkm_timer_func
+nv04_timer = {
+ .init = nv04_timer_init,
+ .intr = nv04_timer_intr,
+ .read = nv04_timer_read,
+ .time = nv04_timer_time,
+ .alarm_init = nv04_timer_alarm_init,
+ .alarm_fini = nv04_timer_alarm_fini,
+};
int
-nv04_timer_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
- struct nvkm_oclass *oclass, void *data, u32 size,
- struct nvkm_object **pobject)
+nv04_timer_new(struct nvkm_device *device, int index, struct nvkm_timer **ptmr)
{
- struct nv04_timer_priv *priv;
- int ret;
-
- ret = nvkm_timer_create(parent, engine, oclass, &priv);
- *pobject = nv_object(priv);
- if (ret)
- return ret;
-
- priv->base.base.intr = nv04_timer_intr;
- priv->base.read = nv04_timer_read;
- priv->base.alarm = nv04_timer_alarm;
- priv->base.alarm_cancel = nv04_timer_alarm_cancel;
- priv->suspend_time = 0;
-
- INIT_LIST_HEAD(&priv->alarms);
- spin_lock_init(&priv->lock);
- return 0;
+ return nvkm_timer_new_(&nv04_timer, device, index, ptmr);
}
-
-struct nvkm_oclass
-nv04_timer_oclass = {
- .handle = NV_SUBDEV(TIMER, 0x04),
- .ofuncs = &(struct nvkm_ofuncs) {
- .ctor = nv04_timer_ctor,
- .dtor = nv04_timer_dtor,
- .init = nv04_timer_init,
- .fini = nv04_timer_fini,
- }
-};
Code Review / kvmfornfv.git / blobdiff