drm/nouveau/fifo: add an api for initiating channel recovery
This will be used by callers outside of fifo interrupt handlers.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c
index 3567c99..23f50f1 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c
@@ -32,6 +32,17 @@
#include <nvif/unpack.h>
void
+nvkm_fifo_recover_chan(struct nvkm_fifo *fifo, int chid)
+{
+ unsigned long flags;
+ if (WARN_ON(!fifo->func->recover_chan))
+ return;
+ spin_lock_irqsave(&fifo->lock, flags);
+ fifo->func->recover_chan(fifo, chid);
+ spin_unlock_irqrestore(&fifo->lock, flags);
+}
+
+void
nvkm_fifo_pause(struct nvkm_fifo *fifo, unsigned long *flags)
{
return fifo->func->pause(fifo, flags);
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/priv.h b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/priv.h
index 1fc9d8b..78136d9 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/priv.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/priv.h
@@ -8,6 +8,7 @@
void nvkm_fifo_uevent(struct nvkm_fifo *);
void nvkm_fifo_cevent(struct nvkm_fifo *);
void nvkm_fifo_kevent(struct nvkm_fifo *, int chid);
+void nvkm_fifo_recover_chan(struct nvkm_fifo *, int chid);
struct nvkm_fifo_chan_oclass;
struct nvkm_fifo_func {
@@ -20,6 +21,7 @@
void (*start)(struct nvkm_fifo *, unsigned long *);
void (*uevent_init)(struct nvkm_fifo *);
void (*uevent_fini)(struct nvkm_fifo *);
+ void (*recover_chan)(struct nvkm_fifo *, int chid);
int (*class_get)(struct nvkm_fifo *, int index,
const struct nvkm_fifo_chan_oclass **);
const struct nvkm_fifo_chan_oclass *chan[];