| /* |
| * Copyright 2014 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/fb.h> |
| #include <subdev/timer.h> |
| |
| #include "gf100.h" |
| |
| static void |
| gm107_ltcg_lts_isr(struct gf100_ltcg_priv *priv, int ltc, int lts) |
| { |
| u32 base = 0x140000 + (ltc * 0x2000) + (lts * 0x400); |
| u32 stat = nv_rd32(priv, base + 0x00c); |
| |
| if (stat) { |
| nv_info(priv, "LTC%d_LTS%d: 0x%08x\n", ltc, lts, stat); |
| nv_wr32(priv, base + 0x00c, stat); |
| } |
| } |
| |
| static void |
| gm107_ltcg_intr(struct nouveau_subdev *subdev) |
| { |
| struct gf100_ltcg_priv *priv = (void *)subdev; |
| u32 mask; |
| |
| mask = nv_rd32(priv, 0x00017c); |
| while (mask) { |
| u32 lts, ltc = __ffs(mask); |
| for (lts = 0; lts < priv->lts_nr; lts++) |
| gm107_ltcg_lts_isr(priv, ltc, lts); |
| mask &= ~(1 << ltc); |
| } |
| |
| /* 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 void |
| gm107_ltcg_tags_clear(struct nouveau_ltcg *ltcg, u32 first, u32 count) |
| { |
| struct gf100_ltcg_priv *priv = (struct gf100_ltcg_priv *)ltcg; |
| u32 last = first + count - 1; |
| int p, i; |
| |
| BUG_ON((first > last) || (last >= priv->num_tags)); |
| |
| nv_wr32(priv, 0x17e270, first); |
| nv_wr32(priv, 0x17e274, last); |
| nv_wr32(priv, 0x17e26c, 0x4); /* trigger clear */ |
| |
| /* wait until it's finished with clearing */ |
| for (p = 0; p < priv->ltc_nr; ++p) { |
| for (i = 0; i < priv->lts_nr; ++i) |
| nv_wait(priv, 0x14046c + p * 0x2000 + i * 0x200, ~0, 0); |
| } |
| } |
| |
| static int |
| gm107_ltcg_ctor(struct nouveau_object *parent, struct nouveau_object *engine, |
| struct nouveau_oclass *oclass, void *data, u32 size, |
| struct nouveau_object **pobject) |
| { |
| struct gf100_ltcg_priv *priv; |
| struct nouveau_fb *pfb = nouveau_fb(parent); |
| u32 parts, mask; |
| int ret, i; |
| |
| ret = nouveau_ltcg_create(parent, engine, oclass, &priv); |
| *pobject = nv_object(priv); |
| if (ret) |
| return ret; |
| |
| parts = nv_rd32(priv, 0x022438); |
| mask = nv_rd32(priv, 0x021c14); |
| for (i = 0; i < parts; i++) { |
| if (!(mask & (1 << i))) |
| priv->ltc_nr++; |
| } |
| priv->lts_nr = nv_rd32(priv, 0x17e280) >> 28; |
| |
| ret = gf100_ltcg_init_tag_ram(pfb, priv); |
| if (ret) |
| return ret; |
| |
| priv->base.tags_alloc = gf100_ltcg_tags_alloc; |
| priv->base.tags_free = gf100_ltcg_tags_free; |
| priv->base.tags_clear = gm107_ltcg_tags_clear; |
| |
| nv_subdev(priv)->intr = gm107_ltcg_intr; |
| return 0; |
| } |
| |
| static int |
| gm107_ltcg_init(struct nouveau_object *object) |
| { |
| struct nouveau_ltcg *ltcg = (struct nouveau_ltcg *)object; |
| struct gf100_ltcg_priv *priv = (struct gf100_ltcg_priv *)ltcg; |
| int ret; |
| |
| ret = nouveau_ltcg_init(ltcg); |
| if (ret) |
| return ret; |
| |
| nv_wr32(priv, 0x17e27c, priv->ltc_nr); |
| nv_wr32(priv, 0x17e278, priv->tag_base); |
| return 0; |
| } |
| |
| struct nouveau_oclass * |
| gm107_ltcg_oclass = &(struct nouveau_oclass) { |
| .handle = NV_SUBDEV(LTCG, 0xff), |
| .ofuncs = &(struct nouveau_ofuncs) { |
| .ctor = gm107_ltcg_ctor, |
| .dtor = gf100_ltcg_dtor, |
| .init = gm107_ltcg_init, |
| .fini = _nouveau_ltcg_fini, |
| }, |
| }; |