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drm/nouveau/fifo: add an api for initiating channel recovery

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This will be used by callers outside of fifo interrupt handlers.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2017-01-26 12:10:24 +10:00
parent 13416077e5
commit 21e6de29bb
2 changed files with 13 additions and 0 deletions
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11
drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c
View File

@ -31,6 +31,17 @@
#include <nvif/event.h>
#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)
{

2
drivers/gpu/drm/nouveau/nvkm/engine/fifo/priv.h
View File

@ -8,6 +8,7 @@ int nvkm_fifo_ctor(const struct nvkm_fifo_func *, struct nvkm_device *,
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 @@ struct nvkm_fifo_func {
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[];