diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c new file mode 100644 index 000000000000..2fb87fbfd11c --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c @@ -0,0 +1,124 @@ +/* + * 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 <bskeggs@redhat.com> + */ +#include "priv.h" + +static int +nvkm_ltc_tags_alloc(struct nvkm_ltc *ltc, u32 n, struct nvkm_mm_node **pnode) +{ + struct nvkm_ltc_priv *priv = (void *)ltc; + int ret; + + ret = nvkm_mm_head(&priv->tags, 0, 1, n, n, 1, pnode); + if (ret) + *pnode = NULL; + + return ret; +} + +static void +nvkm_ltc_tags_free(struct nvkm_ltc *ltc, struct nvkm_mm_node **pnode) +{ + struct nvkm_ltc_priv *priv = (void *)ltc; + nvkm_mm_free(&priv->tags, pnode); +} + +static void +nvkm_ltc_tags_clear(struct nvkm_ltc *ltc, u32 first, u32 count) +{ + const struct nvkm_ltc_impl *impl = (void *)nv_oclass(ltc); + struct nvkm_ltc_priv *priv = (void *)ltc; + const u32 limit = first + count - 1; + + BUG_ON((first > limit) || (limit >= priv->num_tags)); + + impl->cbc_clear(priv, first, limit); + impl->cbc_wait(priv); +} + +static int +nvkm_ltc_zbc_color_get(struct nvkm_ltc *ltc, int index, const u32 color[4]) +{ + const struct nvkm_ltc_impl *impl = (void *)nv_oclass(ltc); + struct nvkm_ltc_priv *priv = (void *)ltc; + memcpy(priv->zbc_color[index], color, sizeof(priv->zbc_color[index])); + impl->zbc_clear_color(priv, index, color); + return index; +} + +static int +nvkm_ltc_zbc_depth_get(struct nvkm_ltc *ltc, int index, const u32 depth) +{ + const struct nvkm_ltc_impl *impl = (void *)nv_oclass(ltc); + struct nvkm_ltc_priv *priv = (void *)ltc; + priv->zbc_depth[index] = depth; + impl->zbc_clear_depth(priv, index, depth); + return index; +} + +int +_nvkm_ltc_init(struct nvkm_object *object) +{ + const struct nvkm_ltc_impl *impl = (void *)nv_oclass(object); + struct nvkm_ltc_priv *priv = (void *)object; + int ret, i; + + ret = nvkm_subdev_init(&priv->base.base); + if (ret) + return ret; + + for (i = priv->base.zbc_min; i <= priv->base.zbc_max; i++) { + impl->zbc_clear_color(priv, i, priv->zbc_color[i]); + impl->zbc_clear_depth(priv, i, priv->zbc_depth[i]); + } + + return 0; +} + +int +nvkm_ltc_create_(struct nvkm_object *parent, struct nvkm_object *engine, + struct nvkm_oclass *oclass, int length, void **pobject) +{ + const struct nvkm_ltc_impl *impl = (void *)oclass; + struct nvkm_ltc_priv *priv; + int ret; + + ret = nvkm_subdev_create_(parent, engine, oclass, 0, "PLTCG", + "l2c", length, pobject); + priv = *pobject; + if (ret) + return ret; + + memset(priv->zbc_color, 0x00, sizeof(priv->zbc_color)); + memset(priv->zbc_depth, 0x00, sizeof(priv->zbc_depth)); + + priv->base.base.intr = impl->intr; + priv->base.tags_alloc = nvkm_ltc_tags_alloc; + priv->base.tags_free = nvkm_ltc_tags_free; + priv->base.tags_clear = nvkm_ltc_tags_clear; + priv->base.zbc_min = 1; /* reserve 0 for disabled */ + priv->base.zbc_max = min(impl->zbc, NVKM_LTC_MAX_ZBC_CNT) - 1; + priv->base.zbc_color_get = nvkm_ltc_zbc_color_get; + priv->base.zbc_depth_get = nvkm_ltc_zbc_depth_get; + return 0; +} |