diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv50.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv50.c | 58 |
1 files changed, 56 insertions, 2 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv50.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv50.c index 7d5c0d026967..f068a27d9338 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv50.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv50.c @@ -89,7 +89,6 @@ nv50_chan_ramfc_write(struct nvkm_chan *chan, u64 offset, u64 length, u32 devm, if (ret) return ret; - nv50_fifo_chan(chan)->eng = chan->eng; nv50_fifo_chan(chan)->ramht = chan->ramht; nvkm_kmap(chan->ramfc); @@ -139,8 +138,64 @@ nv50_chan = { .stop = nv50_chan_stop, }; +static void +nv50_ectx_bind(struct nvkm_engn *engn, struct nvkm_cctx *cctx, struct nvkm_chan *chan) +{ + struct nvkm_subdev *subdev = &chan->cgrp->runl->fifo->engine.subdev; + struct nvkm_device *device = subdev->device; + u64 start = 0, limit = 0; + u32 flags = 0, ptr0, save; + + switch (engn->engine->subdev.type) { + case NVKM_ENGINE_GR : ptr0 = 0x0000; break; + case NVKM_ENGINE_MPEG : ptr0 = 0x0060; break; + default: + WARN_ON(1); + return; + } + + if (!cctx) { + /* HW bug workaround: + * + * PFIFO will hang forever if the connected engines don't report + * that they've processed the context switch request. + * + * In order for the kickoff to work, we need to ensure all the + * connected engines are in a state where they can answer. + * + * Newer chipsets don't seem to suffer from this issue, and well, + * there's also a "ignore these engines" bitmask reg we can use + * if we hit the issue there.. + */ + save = nvkm_mask(device, 0x00b860, 0x00000001, 0x00000001); + + /* Tell engines to save out contexts. */ + nvkm_wr32(device, 0x0032fc, chan->inst->addr >> 12); + nvkm_msec(device, 2000, + if (nvkm_rd32(device, 0x0032fc) != 0xffffffff) + break; + ); + nvkm_wr32(device, 0x00b860, save); + } else { + flags = 0x00190000; + start = cctx->vctx->inst->addr; + limit = start + cctx->vctx->inst->size - 1; + } + + nvkm_kmap(chan->eng); + nvkm_wo32(chan->eng, ptr0 + 0x00, flags); + nvkm_wo32(chan->eng, ptr0 + 0x04, lower_32_bits(limit)); + nvkm_wo32(chan->eng, ptr0 + 0x08, lower_32_bits(start)); + nvkm_wo32(chan->eng, ptr0 + 0x0c, upper_32_bits(limit) << 24 | + lower_32_bits(start)); + nvkm_wo32(chan->eng, ptr0 + 0x10, 0x00000000); + nvkm_wo32(chan->eng, ptr0 + 0x14, 0x00000000); + nvkm_done(chan->eng); +} + static const struct nvkm_engn_func nv50_engn = { + .bind = nv50_ectx_bind, }; const struct nvkm_engn_func @@ -340,7 +395,6 @@ nv50_fifo = { .runl_ctor = nv04_fifo_runl_ctor, .init = nv50_fifo_init, .intr = nv04_fifo_intr, - .engine_id = nv04_fifo_engine_id, .pause = nv04_fifo_pause, .start = nv04_fifo_start, .runl = &nv50_runl, |