diff options
Diffstat (limited to 'nvkm/subdev/ltcg')
-rw-r--r-- | nvkm/subdev/ltcg/Makefile.am | 5 | ||||
-rw-r--r-- | nvkm/subdev/ltcg/nvc0.c | 93 |
2 files changed, 98 insertions, 0 deletions
diff --git a/nvkm/subdev/ltcg/Makefile.am b/nvkm/subdev/ltcg/Makefile.am new file mode 100644 index 000000000..986c677ef --- /dev/null +++ b/nvkm/subdev/ltcg/Makefile.am @@ -0,0 +1,5 @@ +noinst_LTLIBRARIES = libltcg.la + +libltcg_la_SOURCES = nvc0.c + +include $(srcdir)/../Makefile.subdev diff --git a/nvkm/subdev/ltcg/nvc0.c b/nvkm/subdev/ltcg/nvc0.c new file mode 100644 index 000000000..078a2b9d6 --- /dev/null +++ b/nvkm/subdev/ltcg/nvc0.c @@ -0,0 +1,93 @@ +/* + * Copyright 2012 Red Hat Inc. + * + * 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: Ben Skeggs + */ + +#include <subdev/ltcg.h> + +struct nvc0_ltcg_priv { + struct nouveau_ltcg base; + u32 subp_nr; +}; + +static void +nvc0_ltcg_subp_isr(struct nvc0_ltcg_priv *priv, int unit, int subp) +{ + u32 subp_base = 0x141000 + (unit * 0x2000) + (subp * 0x400); + u32 stat = nv_rd32(priv, subp_base + 0x020); + + if (stat) { + nv_info(priv, "LTC%d_LTS%d: 0x%08x\n", unit, subp, stat); + nv_wr32(priv, subp_base + 0x020, stat); + } +} + +static void +nvc0_ltcg_intr(struct nouveau_subdev *subdev) +{ + struct nvc0_ltcg_priv *priv = (void *)subdev; + u32 units; + + units = nv_rd32(priv, 0x00017c); + while (units) { + u32 subp, unit = ffs(units) - 1; + for (subp = 0; subp < priv->subp_nr; subp++) + nvc0_ltcg_subp_isr(priv, unit, subp); + units &= ~(1 << unit); + } + + /* we do something horribly wrong and upset PMFB a lot, so mask off + * interrupts from it after the first one until it's fixed + */ + nv_mask(priv, 0x000640, 0x02000000, 0x00000000); +} + +static int +nvc0_ltcg_ctor(struct nouveau_object *parent, struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *data, u32 size, + struct nouveau_object **pobject) +{ + struct nvc0_ltcg_priv *priv; + int ret; + + ret = nouveau_ltcg_create(parent, engine, oclass, &priv); + *pobject = nv_object(priv); + if (ret) + return ret; + + priv->subp_nr = nv_rd32(priv, 0x17e8dc) >> 24; + nv_mask(priv, 0x17e820, 0x00100000, 0x00000000); /* INTR_EN &= ~0x10 */ + + nv_subdev(priv)->intr = nvc0_ltcg_intr; + return 0; +} + +struct nouveau_oclass +nvc0_ltcg_oclass = { + .handle = NV_SUBDEV(LTCG, 0xc0), + .ofuncs = &(struct nouveau_ofuncs) { + .ctor = nvc0_ltcg_ctor, + .dtor = _nouveau_ltcg_dtor, + .init = _nouveau_ltcg_init, + .fini = _nouveau_ltcg_fini, + }, +}; |