nv04.c

  1/*
  2 * Copyright 2012 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
 23 */
 24#include "priv.h"
 25
 26const struct nvkm_mc_map
 27nv04_mc_reset[] = {
 28	{ 0x00001000, NVKM_ENGINE_GR },
 29	{ 0x00000100, NVKM_ENGINE_FIFO },
 30	{}
 31};
 32
 33static void
 34nv04_mc_device_disable(struct nvkm_mc *mc, u32 mask)
 35{
 36	nvkm_mask(mc->subdev.device, 0x000200, mask, 0x00000000);
 37}
 38
 39static void
 40nv04_mc_device_enable(struct nvkm_mc *mc, u32 mask)
 41{
 42	struct nvkm_device *device = mc->subdev.device;
 43
 44	nvkm_mask(device, 0x000200, mask, mask);
 45	nvkm_rd32(device, 0x000200);
 46}
 47
 48static bool
 49nv04_mc_device_enabled(struct nvkm_mc *mc, u32 mask)
 50{
 51	return (nvkm_rd32(mc->subdev.device, 0x000200) & mask) == mask;
 52}
 53
 54const struct nvkm_mc_device_func
 55nv04_mc_device = {
 56	.enabled = nv04_mc_device_enabled,
 57	.enable = nv04_mc_device_enable,
 58	.disable = nv04_mc_device_disable,
 59};
 60
 61static const struct nvkm_intr_data
 62nv04_mc_intrs[] = {
 63	{ NVKM_ENGINE_DISP , 0, 0, 0x01010000, true },
 64	{ NVKM_ENGINE_GR   , 0, 0, 0x00001000, true },
 65	{ NVKM_ENGINE_FIFO , 0, 0, 0x00000100 },
 66	{ NVKM_SUBDEV_BUS  , 0, 0, 0x10000000, true },
 67	{ NVKM_SUBDEV_TIMER, 0, 0, 0x00100000, true },
 68	{}
 69};
 70
 71void
 72nv04_mc_intr_rearm(struct nvkm_intr *intr)
 73{
 74	struct nvkm_mc *mc = container_of(intr, typeof(*mc), intr);
 75	int leaf;
 76
 77	for (leaf = 0; leaf < intr->leaves; leaf++)
 78		nvkm_wr32(mc->subdev.device, 0x000140 + (leaf * 4), 0x00000001);
 79}
 80
 81void
 82nv04_mc_intr_unarm(struct nvkm_intr *intr)
 83{
 84	struct nvkm_mc *mc = container_of(intr, typeof(*mc), intr);
 85	int leaf;
 86
 87	for (leaf = 0; leaf < intr->leaves; leaf++)
 88		nvkm_wr32(mc->subdev.device, 0x000140 + (leaf * 4), 0x00000000);
 89
 90	nvkm_rd32(mc->subdev.device, 0x000140);
 91}
 92
 93bool
 94nv04_mc_intr_pending(struct nvkm_intr *intr)
 95{
 96	struct nvkm_mc *mc = container_of(intr, typeof(*mc), intr);
 97	bool pending = false;
 98	int leaf;
 99
100	for (leaf = 0; leaf < intr->leaves; leaf++) {
101		intr->stat[leaf] = nvkm_rd32(mc->subdev.device, 0x000100 + (leaf * 4));
102		if (intr->stat[leaf])
103			pending = true;
104	}
105
106	return pending;
107}
108
109const struct nvkm_intr_func
110nv04_mc_intr = {
111	.pending = nv04_mc_intr_pending,
112	.unarm = nv04_mc_intr_unarm,
113	.rearm = nv04_mc_intr_rearm,
114};
115
116void
117nv04_mc_init(struct nvkm_mc *mc)
118{
119	struct nvkm_device *device = mc->subdev.device;
120	nvkm_wr32(device, 0x000200, 0xffffffff); /* everything enabled */
121	nvkm_wr32(device, 0x001850, 0x00000001); /* disable rom access */
122}
123
124static const struct nvkm_mc_func
125nv04_mc = {
126	.init = nv04_mc_init,
127	.intr = &nv04_mc_intr,
128	.intrs = nv04_mc_intrs,
129	.device = &nv04_mc_device,
130	.reset = nv04_mc_reset,
131};
132
133int
134nv04_mc_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_mc **pmc)
135{
136	return nvkm_mc_new_(&nv04_mc, device, type, inst, pmc);
137}