diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.c | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.c new file mode 100644 index 000000000000..19c8e50eeff7 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.c @@ -0,0 +1,94 @@ +/* + * Copyright 2012 Nouveau Community + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Martin Peres <martin.peres@labri.fr> + * Ben Skeggs + */ +#include "nv04.h" + +static void +nv04_bus_intr(struct nvkm_subdev *subdev) +{ + struct nvkm_bus *pbus = nvkm_bus(subdev); + u32 stat = nv_rd32(pbus, 0x001100) & nv_rd32(pbus, 0x001140); + + if (stat & 0x00000001) { + nv_error(pbus, "BUS ERROR\n"); + stat &= ~0x00000001; + nv_wr32(pbus, 0x001100, 0x00000001); + } + + if (stat & 0x00000110) { + subdev = nvkm_subdev(subdev, NVDEV_SUBDEV_GPIO); + if (subdev && subdev->intr) + subdev->intr(subdev); + stat &= ~0x00000110; + nv_wr32(pbus, 0x001100, 0x00000110); + } + + if (stat) { + nv_error(pbus, "unknown intr 0x%08x\n", stat); + nv_mask(pbus, 0x001140, stat, 0x00000000); + } +} + +static int +nv04_bus_init(struct nvkm_object *object) +{ + struct nv04_bus_priv *priv = (void *)object; + + nv_wr32(priv, 0x001100, 0xffffffff); + nv_wr32(priv, 0x001140, 0x00000111); + + return nvkm_bus_init(&priv->base); +} + +int +nv04_bus_ctor(struct nvkm_object *parent, struct nvkm_object *engine, + struct nvkm_oclass *oclass, void *data, u32 size, + struct nvkm_object **pobject) +{ + struct nv04_bus_impl *impl = (void *)oclass; + struct nv04_bus_priv *priv; + int ret; + + ret = nvkm_bus_create(parent, engine, oclass, &priv); + *pobject = nv_object(priv); + if (ret) + return ret; + + nv_subdev(priv)->intr = impl->intr; + priv->base.hwsq_exec = impl->hwsq_exec; + priv->base.hwsq_size = impl->hwsq_size; + return 0; +} + +struct nvkm_oclass * +nv04_bus_oclass = &(struct nv04_bus_impl) { + .base.handle = NV_SUBDEV(BUS, 0x04), + .base.ofuncs = &(struct nvkm_ofuncs) { + .ctor = nv04_bus_ctor, + .dtor = _nvkm_bus_dtor, + .init = nv04_bus_init, + .fini = _nvkm_bus_fini, + }, + .intr = nv04_bus_intr, +}.base; |