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drm/nouveau/mc: support for temporarily masking interrupts from a specific device

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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2016-05-30 08:39:27 +10:00
parent 6e09a57899
commit 66adbfb00d
3 changed files with 18 additions and 0 deletions
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1
drivers/gpu/drm/nouveau/include/nvkm/subdev/mc.h
View File

@ -13,6 +13,7 @@ void nvkm_mc_reset(struct nvkm_device *, enum nvkm_devidx);
void nvkm_mc_intr(struct nvkm_device *, bool *handled);
void nvkm_mc_intr_unarm(struct nvkm_device *);
void nvkm_mc_intr_rearm(struct nvkm_device *);
void nvkm_mc_intr_mask(struct nvkm_device *, enum nvkm_devidx, bool enable);
void nvkm_mc_unk260(struct nvkm_device *, u32 data);
int nv04_mc_new(struct nvkm_device *, int, struct nvkm_mc **);

15
drivers/gpu/drm/nouveau/nvkm/subdev/mc/base.c
View File

@ -34,6 +34,21 @@ nvkm_mc_unk260(struct nvkm_device *device, u32 data)
mc->func->unk260(mc, data);
}
void
nvkm_mc_intr_mask(struct nvkm_device *device, enum nvkm_devidx devidx, bool en)
{
struct nvkm_mc *mc = device->mc;
const struct nvkm_mc_map *map;
if (likely(mc) && mc->func->intr_mask) {
u32 mask = nvkm_top_intr_mask(device, devidx);
for (map = mc->func->intr; !mask && map->stat; map++) {
if (map->unit == devidx)
mask = map->stat;
}
mc->func->intr_mask(mc, mask, en ? mask : 0);
}
}
void
nvkm_mc_intr_unarm(struct nvkm_device *device)
{

2
drivers/gpu/drm/nouveau/nvkm/subdev/mc/priv.h
View File

@ -21,6 +21,8 @@ struct nvkm_mc_func {
void (*intr_unarm)(struct nvkm_mc *);
/* enable reporting of interrupts to host */
void (*intr_rearm)(struct nvkm_mc *);
/* (un)mask delivery of specific interrupts */
void (*intr_mask)(struct nvkm_mc *, u32 mask, u32 stat);
/* retrieve pending interrupt mask (NV_PMC_INTR) */
u32 (*intr_stat)(struct nvkm_mc *);
const struct nvkm_mc_map *reset;