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authorBen Skeggs <bskeggs@redhat.com>2013-01-31 13:51:20 +1000
committerBen Skeggs <bskeggs@redhat.com>2013-02-20 16:00:46 +1000
commit9bd2ddbaa241274cd11191838d080fc308ecf6c7 (patch)
tree0e8ba52fb2034de4f3fcd977589e3a9bdad79b26 /drivers
parent1d7c71a3e2f77336df536855b0efd2dc5bdeb41b (diff)
downloadop-kernel-dev-9bd2ddbaa241274cd11191838d080fc308ecf6c7.zip
op-kernel-dev-9bd2ddbaa241274cd11191838d080fc308ecf6c7.tar.gz
drm/nouveau/fifo/nvc0-: use interrupt 31 as an event trigger
Generated if you try and use fifo method 0x20 on any subchannel, appears that it can be safely masked off without stalling the whole GPU. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/nouveau/core/engine/fifo/base.c6
-rw-r--r--drivers/gpu/drm/nouveau/core/engine/fifo/nvc0.c24
-rw-r--r--drivers/gpu/drm/nouveau/core/engine/fifo/nve0.c27
-rw-r--r--drivers/gpu/drm/nouveau/core/include/engine/fifo.h2
4 files changed, 56 insertions, 3 deletions
diff --git a/drivers/gpu/drm/nouveau/core/engine/fifo/base.c b/drivers/gpu/drm/nouveau/core/engine/fifo/base.c
index ca1057a..7341ebe 100644
--- a/drivers/gpu/drm/nouveau/core/engine/fifo/base.c
+++ b/drivers/gpu/drm/nouveau/core/engine/fifo/base.c
@@ -25,6 +25,7 @@
#include <core/client.h>
#include <core/object.h>
#include <core/handle.h>
+#include <core/event.h>
#include <core/class.h>
#include <engine/dmaobj.h>
@@ -165,6 +166,7 @@ void
nouveau_fifo_destroy(struct nouveau_fifo *priv)
{
kfree(priv->channel);
+ nouveau_event_destroy(&priv->uevent);
nouveau_engine_destroy(&priv->base);
}
@@ -189,6 +191,10 @@ nouveau_fifo_create_(struct nouveau_object *parent,
if (!priv->channel)
return -ENOMEM;
+ ret = nouveau_event_create(1, &priv->uevent);
+ if (ret)
+ return ret;
+
priv->chid = nouveau_fifo_chid;
spin_lock_init(&priv->lock);
return 0;
diff --git a/drivers/gpu/drm/nouveau/core/engine/fifo/nvc0.c b/drivers/gpu/drm/nouveau/core/engine/fifo/nvc0.c
index 2a9919b..bf86f40 100644
--- a/drivers/gpu/drm/nouveau/core/engine/fifo/nvc0.c
+++ b/drivers/gpu/drm/nouveau/core/engine/fifo/nvc0.c
@@ -27,6 +27,7 @@
#include <core/namedb.h>
#include <core/gpuobj.h>
#include <core/engctx.h>
+#include <core/event.h>
#include <core/class.h>
#include <core/math.h>
#include <core/enum.h>
@@ -583,7 +584,8 @@ nvc0_fifo_intr(struct nouveau_subdev *subdev)
if (stat & 0x80000000) {
u32 intr = nv_mask(priv, 0x0025a8, 0x00000000, 0x00000000);
- nv_warn(priv, "INTR 0x80000000: 0x%08x\n", intr);
+ nouveau_event_trigger(priv->base.uevent, 0);
+ nv_debug(priv, "INTR 0x80000000: 0x%08x\n", intr);
stat &= ~0x80000000;
}
@@ -594,6 +596,20 @@ nvc0_fifo_intr(struct nouveau_subdev *subdev)
}
}
+static void
+nvc0_fifo_uevent_enable(struct nouveau_event *event, int index)
+{
+ struct nvc0_fifo_priv *priv = event->priv;
+ nv_mask(priv, 0x002140, 0x80000000, 0x80000000);
+}
+
+static void
+nvc0_fifo_uevent_disable(struct nouveau_event *event, int index)
+{
+ struct nvc0_fifo_priv *priv = event->priv;
+ nv_mask(priv, 0x002140, 0x80000000, 0x00000000);
+}
+
static int
nvc0_fifo_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
struct nouveau_oclass *oclass, void *data, u32 size,
@@ -627,6 +643,10 @@ nvc0_fifo_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
if (ret)
return ret;
+ priv->base.uevent->enable = nvc0_fifo_uevent_enable;
+ priv->base.uevent->disable = nvc0_fifo_uevent_disable;
+ priv->base.uevent->priv = priv;
+
nv_subdev(priv)->unit = 0x00000100;
nv_subdev(priv)->intr = nvc0_fifo_intr;
nv_engine(priv)->cclass = &nvc0_fifo_cclass;
@@ -685,7 +705,7 @@ nvc0_fifo_init(struct nouveau_object *object)
nv_wr32(priv, 0x002a00, 0xffffffff); /* clears PFIFO.INTR bit 30 */
nv_wr32(priv, 0x002100, 0xffffffff);
- nv_wr32(priv, 0x002140, 0xbfffffff);
+ nv_wr32(priv, 0x002140, 0x3fffffff);
return 0;
}
diff --git a/drivers/gpu/drm/nouveau/core/engine/fifo/nve0.c b/drivers/gpu/drm/nouveau/core/engine/fifo/nve0.c
index 410c6e2..4419e40 100644
--- a/drivers/gpu/drm/nouveau/core/engine/fifo/nve0.c
+++ b/drivers/gpu/drm/nouveau/core/engine/fifo/nve0.c
@@ -27,6 +27,7 @@
#include <core/namedb.h>
#include <core/gpuobj.h>
#include <core/engctx.h>
+#include <core/event.h>
#include <core/class.h>
#include <core/math.h>
#include <core/enum.h>
@@ -554,6 +555,12 @@ nve0_fifo_intr(struct nouveau_subdev *subdev)
stat &= ~0x40000000;
}
+ if (stat & 0x80000000) {
+ nouveau_event_trigger(priv->base.uevent, 0);
+ nv_wr32(priv, 0x002100, 0x80000000);
+ stat &= ~0x80000000;
+ }
+
if (stat) {
nv_fatal(priv, "unhandled status 0x%08x\n", stat);
nv_wr32(priv, 0x002100, stat);
@@ -561,6 +568,20 @@ nve0_fifo_intr(struct nouveau_subdev *subdev)
}
}
+static void
+nve0_fifo_uevent_enable(struct nouveau_event *event, int index)
+{
+ struct nve0_fifo_priv *priv = event->priv;
+ nv_mask(priv, 0x002140, 0x80000000, 0x80000000);
+}
+
+static void
+nve0_fifo_uevent_disable(struct nouveau_event *event, int index)
+{
+ struct nve0_fifo_priv *priv = event->priv;
+ nv_mask(priv, 0x002140, 0x80000000, 0x00000000);
+}
+
static int
nve0_fifo_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
struct nouveau_oclass *oclass, void *data, u32 size,
@@ -584,6 +605,10 @@ nve0_fifo_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
if (ret)
return ret;
+ priv->base.uevent->enable = nve0_fifo_uevent_enable;
+ priv->base.uevent->disable = nve0_fifo_uevent_disable;
+ priv->base.uevent->priv = priv;
+
nv_subdev(priv)->unit = 0x00000100;
nv_subdev(priv)->intr = nve0_fifo_intr;
nv_engine(priv)->cclass = &nve0_fifo_cclass;
@@ -634,7 +659,7 @@ nve0_fifo_init(struct nouveau_object *object)
nv_wr32(priv, 0x002a00, 0xffffffff);
nv_wr32(priv, 0x002100, 0xffffffff);
- nv_wr32(priv, 0x002140, 0xbfffffff);
+ nv_wr32(priv, 0x002140, 0x3fffffff);
return 0;
}
diff --git a/drivers/gpu/drm/nouveau/core/include/engine/fifo.h b/drivers/gpu/drm/nouveau/core/include/engine/fifo.h
index 543e4ef..b46c197 100644
--- a/drivers/gpu/drm/nouveau/core/include/engine/fifo.h
+++ b/drivers/gpu/drm/nouveau/core/include/engine/fifo.h
@@ -65,6 +65,8 @@ struct nouveau_fifo_base {
struct nouveau_fifo {
struct nouveau_engine base;
+ struct nouveau_event *uevent;
+
struct nouveau_object **channel;
spinlock_t lock;
u16 min;
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