base.c

  1/*
  2 * Copyright 2014 Red Hat Inc.
  3 *
  4 * Permission is hereby granted, free of charge, to any person obtaining a
  5 * copy of this software and associated documentation files (the "Software"),
  6 * to deal in the Software without restriction, including without limitation
  7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  8 * and/or sell copies of the Software, and to permit persons to whom the
  9 * Software is furnished to do so, subject to the following conditions:
 10 *
 11 * The above copyright notice and this permission notice shall be included in
 12 * all copies or substantial portions of the Software.
 13 *
 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 20 * OTHER DEALINGS IN THE SOFTWARE.
 21 *
 22 * Authors: Ben Skeggs <bskeggs@redhat.com>
 23 */
 24#include "priv.h"
 25
 26#include <core/memory.h>
 27
 28void
 29nvkm_ltc_tags_clear(struct nvkm_device *device, u32 first, u32 count)
 30{
 31	struct nvkm_ltc *ltc = device->ltc;
 32	const u32 limit = first + count - 1;
 33
 34	BUG_ON((first > limit) || (limit >= ltc->num_tags));
 35
 36	mutex_lock(&ltc->mutex);
 37	ltc->func->cbc_clear(ltc, first, limit);
 38	ltc->func->cbc_wait(ltc);
 39	mutex_unlock(&ltc->mutex);
 40}
 41
 42int
 43nvkm_ltc_zbc_color_get(struct nvkm_ltc *ltc, int index, const u32 color[4])
 44{
 45	memcpy(ltc->zbc_color[index], color, sizeof(ltc->zbc_color[index]));
 46	ltc->func->zbc_clear_color(ltc, index, color);
 47	return index;
 48}
 49
 50int
 51nvkm_ltc_zbc_depth_get(struct nvkm_ltc *ltc, int index, const u32 depth)
 52{
 53	ltc->zbc_depth[index] = depth;
 54	ltc->func->zbc_clear_depth(ltc, index, depth);
 55	return index;
 56}
 57
 58int
 59nvkm_ltc_zbc_stencil_get(struct nvkm_ltc *ltc, int index, const u32 stencil)
 60{
 61	ltc->zbc_stencil[index] = stencil;
 62	ltc->func->zbc_clear_stencil(ltc, index, stencil);
 63	return index;
 64}
 65
 66void
 67nvkm_ltc_invalidate(struct nvkm_ltc *ltc)
 68{
 69	if (ltc->func->invalidate)
 70		ltc->func->invalidate(ltc);
 71}
 72
 73void
 74nvkm_ltc_flush(struct nvkm_ltc *ltc)
 75{
 76	if (ltc->func->flush)
 77		ltc->func->flush(ltc);
 78}
 79
 80static void
 81nvkm_ltc_intr(struct nvkm_subdev *subdev)
 82{
 83	struct nvkm_ltc *ltc = nvkm_ltc(subdev);
 84	ltc->func->intr(ltc);
 85}
 86
 87static int
 88nvkm_ltc_oneinit(struct nvkm_subdev *subdev)
 89{
 90	struct nvkm_ltc *ltc = nvkm_ltc(subdev);
 91	return ltc->func->oneinit(ltc);
 92}
 93
 94static int
 95nvkm_ltc_init(struct nvkm_subdev *subdev)
 96{
 97	struct nvkm_ltc *ltc = nvkm_ltc(subdev);
 98	int i;
 99
100	for (i = ltc->zbc_color_min; i <= ltc->zbc_color_max; i++)
101		ltc->func->zbc_clear_color(ltc, i, ltc->zbc_color[i]);
102
103	for (i = ltc->zbc_depth_min; i <= ltc->zbc_depth_max; i++) {
104		ltc->func->zbc_clear_depth(ltc, i, ltc->zbc_depth[i]);
105		if (ltc->func->zbc_clear_stencil)
106			ltc->func->zbc_clear_stencil(ltc, i, ltc->zbc_stencil[i]);
107	}
108
109	ltc->func->init(ltc);
110	return 0;
111}
112
113static void *
114nvkm_ltc_dtor(struct nvkm_subdev *subdev)
115{
116	struct nvkm_ltc *ltc = nvkm_ltc(subdev);
117	nvkm_memory_unref(&ltc->tag_ram);
118	mutex_destroy(&ltc->mutex);
119	return ltc;
120}
121
122static const struct nvkm_subdev_func
123nvkm_ltc = {
124	.dtor = nvkm_ltc_dtor,
125	.oneinit = nvkm_ltc_oneinit,
126	.init = nvkm_ltc_init,
127	.intr = nvkm_ltc_intr,
128};
129
130int
131nvkm_ltc_new_(const struct nvkm_ltc_func *func, struct nvkm_device *device,
132	      enum nvkm_subdev_type type, int inst, struct nvkm_ltc **pltc)
133{
134	struct nvkm_ltc *ltc;
135
136	if (!(ltc = *pltc = kzalloc(sizeof(*ltc), GFP_KERNEL)))
137		return -ENOMEM;
138
139	nvkm_subdev_ctor(&nvkm_ltc, device, type, inst, &ltc->subdev);
140	ltc->func = func;
141	mutex_init(&ltc->mutex);
142	ltc->zbc_color_min = 1; /* reserve 0 for disabled */
143	ltc->zbc_color_max = min(func->zbc_color, NVKM_LTC_MAX_ZBC_COLOR_CNT) - 1;
144	ltc->zbc_depth_min = 1; /* reserve 0 for disabled */
145	ltc->zbc_depth_max = min(func->zbc_depth, NVKM_LTC_MAX_ZBC_DEPTH_CNT) - 1;
146	return 0;
147}