diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gf100.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gf100.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gf100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gf100.c new file mode 100644 index 000000000000..8e7cc6200d60 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gf100.c @@ -0,0 +1,236 @@ +/* + * 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 "priv.h" + +#include <core/enum.h> +#include <subdev/fb.h> +#include <subdev/timer.h> + +void +gf100_ltc_cbc_clear(struct nvkm_ltc_priv *priv, u32 start, u32 limit) +{ + nv_wr32(priv, 0x17e8cc, start); + nv_wr32(priv, 0x17e8d0, limit); + nv_wr32(priv, 0x17e8c8, 0x00000004); +} + +void +gf100_ltc_cbc_wait(struct nvkm_ltc_priv *priv) +{ + int c, s; + for (c = 0; c < priv->ltc_nr; c++) { + for (s = 0; s < priv->lts_nr; s++) + nv_wait(priv, 0x1410c8 + c * 0x2000 + s * 0x400, ~0, 0); + } +} + +void +gf100_ltc_zbc_clear_color(struct nvkm_ltc_priv *priv, int i, const u32 color[4]) +{ + nv_mask(priv, 0x17ea44, 0x0000000f, i); + nv_wr32(priv, 0x17ea48, color[0]); + nv_wr32(priv, 0x17ea4c, color[1]); + nv_wr32(priv, 0x17ea50, color[2]); + nv_wr32(priv, 0x17ea54, color[3]); +} + +void +gf100_ltc_zbc_clear_depth(struct nvkm_ltc_priv *priv, int i, const u32 depth) +{ + nv_mask(priv, 0x17ea44, 0x0000000f, i); + nv_wr32(priv, 0x17ea58, depth); +} + +static const struct nvkm_bitfield +gf100_ltc_lts_intr_name[] = { + { 0x00000001, "IDLE_ERROR_IQ" }, + { 0x00000002, "IDLE_ERROR_CBC" }, + { 0x00000004, "IDLE_ERROR_TSTG" }, + { 0x00000008, "IDLE_ERROR_DSTG" }, + { 0x00000010, "EVICTED_CB" }, + { 0x00000020, "ILLEGAL_COMPSTAT" }, + { 0x00000040, "BLOCKLINEAR_CB" }, + { 0x00000100, "ECC_SEC_ERROR" }, + { 0x00000200, "ECC_DED_ERROR" }, + { 0x00000400, "DEBUG" }, + { 0x00000800, "ATOMIC_TO_Z" }, + { 0x00001000, "ILLEGAL_ATOMIC" }, + { 0x00002000, "BLKACTIVITY_ERR" }, + {} +}; + +static void +gf100_ltc_lts_intr(struct nvkm_ltc_priv *priv, int ltc, int lts) +{ + u32 base = 0x141000 + (ltc * 0x2000) + (lts * 0x400); + u32 intr = nv_rd32(priv, base + 0x020); + u32 stat = intr & 0x0000ffff; + + if (stat) { + nv_info(priv, "LTC%d_LTS%d:", ltc, lts); + nvkm_bitfield_print(gf100_ltc_lts_intr_name, stat); + pr_cont("\n"); + } + + nv_wr32(priv, base + 0x020, intr); +} + +void +gf100_ltc_intr(struct nvkm_subdev *subdev) +{ + struct nvkm_ltc_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++) + gf100_ltc_lts_intr(priv, ltc, lts); + mask &= ~(1 << ltc); + } +} + +static int +gf100_ltc_init(struct nvkm_object *object) +{ + struct nvkm_ltc_priv *priv = (void *)object; + u32 lpg128 = !(nv_rd32(priv, 0x100c80) & 0x00000001); + int ret; + + ret = nvkm_ltc_init(priv); + if (ret) + return ret; + + nv_mask(priv, 0x17e820, 0x00100000, 0x00000000); /* INTR_EN &= ~0x10 */ + nv_wr32(priv, 0x17e8d8, priv->ltc_nr); + nv_wr32(priv, 0x17e8d4, priv->tag_base); + nv_mask(priv, 0x17e8c0, 0x00000002, lpg128 ? 0x00000002 : 0x00000000); + return 0; +} + +void +gf100_ltc_dtor(struct nvkm_object *object) +{ + struct nvkm_fb *pfb = nvkm_fb(object); + struct nvkm_ltc_priv *priv = (void *)object; + + nvkm_mm_fini(&priv->tags); + nvkm_mm_free(&pfb->vram, &priv->tag_ram); + + nvkm_ltc_destroy(priv); +} + +/* TODO: Figure out tag memory details and drop the over-cautious allocation. + */ +int +gf100_ltc_init_tag_ram(struct nvkm_fb *pfb, struct nvkm_ltc_priv *priv) +{ + u32 tag_size, tag_margin, tag_align; + int ret; + + /* tags for 1/4 of VRAM should be enough (8192/4 per GiB of VRAM) */ + priv->num_tags = (pfb->ram->size >> 17) / 4; + if (priv->num_tags > (1 << 17)) + priv->num_tags = 1 << 17; /* we have 17 bits in PTE */ + priv->num_tags = (priv->num_tags + 63) & ~63; /* round up to 64 */ + + tag_align = priv->ltc_nr * 0x800; + tag_margin = (tag_align < 0x6000) ? 0x6000 : tag_align; + + /* 4 part 4 sub: 0x2000 bytes for 56 tags */ + /* 3 part 4 sub: 0x6000 bytes for 168 tags */ + /* + * About 147 bytes per tag. Let's be safe and allocate x2, which makes + * 0x4980 bytes for 64 tags, and round up to 0x6000 bytes for 64 tags. + * + * For 4 GiB of memory we'll have 8192 tags which makes 3 MiB, < 0.1 %. + */ + tag_size = (priv->num_tags / 64) * 0x6000 + tag_margin; + tag_size += tag_align; + tag_size = (tag_size + 0xfff) >> 12; /* round up */ + + ret = nvkm_mm_tail(&pfb->vram, 1, 1, tag_size, tag_size, 1, + &priv->tag_ram); + if (ret) { + priv->num_tags = 0; + } else { + u64 tag_base = ((u64)priv->tag_ram->offset << 12) + tag_margin; + + tag_base += tag_align - 1; + ret = do_div(tag_base, tag_align); + + priv->tag_base = tag_base; + } + + ret = nvkm_mm_init(&priv->tags, 0, priv->num_tags, 1); + return ret; +} + +int +gf100_ltc_ctor(struct nvkm_object *parent, struct nvkm_object *engine, + struct nvkm_oclass *oclass, void *data, u32 size, + struct nvkm_object **pobject) +{ + struct nvkm_fb *pfb = nvkm_fb(parent); + struct nvkm_ltc_priv *priv; + u32 parts, mask; + int ret, i; + + ret = nvkm_ltc_create(parent, engine, oclass, &priv); + *pobject = nv_object(priv); + if (ret) + return ret; + + parts = nv_rd32(priv, 0x022438); + mask = nv_rd32(priv, 0x022554); + for (i = 0; i < parts; i++) { + if (!(mask & (1 << i))) + priv->ltc_nr++; + } + priv->lts_nr = nv_rd32(priv, 0x17e8dc) >> 28; + + ret = gf100_ltc_init_tag_ram(pfb, priv); + if (ret) + return ret; + + nv_subdev(priv)->intr = gf100_ltc_intr; + return 0; +} + +struct nvkm_oclass * +gf100_ltc_oclass = &(struct nvkm_ltc_impl) { + .base.handle = NV_SUBDEV(LTC, 0xc0), + .base.ofuncs = &(struct nvkm_ofuncs) { + .ctor = gf100_ltc_ctor, + .dtor = gf100_ltc_dtor, + .init = gf100_ltc_init, + .fini = _nvkm_ltc_fini, + }, + .intr = gf100_ltc_intr, + .cbc_clear = gf100_ltc_cbc_clear, + .cbc_wait = gf100_ltc_cbc_wait, + .zbc = 16, + .zbc_clear_color = gf100_ltc_zbc_clear_color, + .zbc_clear_depth = gf100_ltc_zbc_clear_depth, +}.base; |