From e09b41010ba33a20a87472ee821fa407a5b8da36 Mon Sep 17 00:00:00 2001 From: José Pekkarinen Date: Mon, 11 Apr 2016 10:41:07 +0300 Subject: These changes are the raw update to linux-4.4.6-rt14. Kernel sources are taken from kernel.org, and rt patch from the rt wiki download page. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen --- .../gpu/drm/nouveau/nvkm/subdev/timer/nv04.c | 253 ++++++--------------- 1 file changed, 71 insertions(+), 182 deletions(-) (limited to 'kernel/drivers/gpu/drm/nouveau/nvkm/subdev/timer/nv04.c') diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/timer/nv04.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/timer/nv04.c index 6b7facbe5..7b9ce87f0 100644 --- a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/timer/nv04.c +++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/timer/nv04.c @@ -21,165 +21,92 @@ * * Authors: Ben Skeggs */ -#include "nv04.h" +#include "priv.h" +#include "regsnv04.h" -#include - -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 */ @@ -198,65 +125,27 @@ nv04_timer_init(struct nvkm_object *object) 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, - } -}; -- cgit 1.2.3-korg