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/*
* 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;
}
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