1/*
2 * Copyright 2013 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 "nv40.h"
25
26static void
27nv40_perfctr_init(struct nvkm_pm *pm, struct nvkm_perfdom *dom,
28		  struct nvkm_perfctr *ctr)
29{
30	struct nvkm_device *device = pm->engine.subdev.device;
31	u32 log = ctr->logic_op;
32	u32 src = 0x00000000;
33	int i;
34
35	for (i = 0; i < 4; i++)
36		src |= ctr->signal[i] << (i * 8);
37
38	nvkm_wr32(device, 0x00a7c0 + dom->addr, 0x00000001 | (dom->mode << 4));
39	nvkm_wr32(device, 0x00a400 + dom->addr + (ctr->slot * 0x40), src);
40	nvkm_wr32(device, 0x00a420 + dom->addr + (ctr->slot * 0x40), log);
41}
42
43static void
44nv40_perfctr_read(struct nvkm_pm *pm, struct nvkm_perfdom *dom,
45		  struct nvkm_perfctr *ctr)
46{
47	struct nvkm_device *device = pm->engine.subdev.device;
48
49	switch (ctr->slot) {
50	case 0: ctr->ctr = nvkm_rd32(device, 0x00a700 + dom->addr); break;
51	case 1: ctr->ctr = nvkm_rd32(device, 0x00a6c0 + dom->addr); break;
52	case 2: ctr->ctr = nvkm_rd32(device, 0x00a680 + dom->addr); break;
53	case 3: ctr->ctr = nvkm_rd32(device, 0x00a740 + dom->addr); break;
54	}
55	dom->clk = nvkm_rd32(device, 0x00a600 + dom->addr);
56}
57
58static void
59nv40_perfctr_next(struct nvkm_pm *pm, struct nvkm_perfdom *dom)
60{
61	struct nvkm_device *device = pm->engine.subdev.device;
62	if (pm->sequence != pm->sequence) {
63		nvkm_wr32(device, 0x400084, 0x00000020);
64		pm->sequence = pm->sequence;
65	}
66}
67
68const struct nvkm_funcdom
69nv40_perfctr_func = {
70	.init = nv40_perfctr_init,
71	.read = nv40_perfctr_read,
72	.next = nv40_perfctr_next,
73};
74
75static const struct nvkm_pm_func
76nv40_pm_ = {
77};
78
79int
80nv40_pm_new_(const struct nvkm_specdom *doms, struct nvkm_device *device,
81	     int index, struct nvkm_pm **ppm)
82{
83	struct nv40_pm *pm;
84	int ret;
85
86	if (!(pm = kzalloc(sizeof(*pm), GFP_KERNEL)))
87		return -ENOMEM;
88	*ppm = &pm->base;
89
90	ret = nvkm_pm_ctor(&nv40_pm_, device, index, &pm->base);
91	if (ret)
92		return ret;
93
94	return nvkm_perfdom_new(&pm->base, "pc", 0, 0, 0, 4, doms);
95}
96
97static const struct nvkm_specdom
98nv40_pm[] = {
99	{ 0x20, (const struct nvkm_specsig[]) {
100			{}
101		}, &nv40_perfctr_func },
102	{ 0x20, (const struct nvkm_specsig[]) {
103			{}
104		}, &nv40_perfctr_func },
105	{ 0x20, (const struct nvkm_specsig[]) {
106			{}
107		}, &nv40_perfctr_func },
108	{ 0x20, (const struct nvkm_specsig[]) {
109			{}
110		}, &nv40_perfctr_func },
111	{ 0x20, (const struct nvkm_specsig[]) {
112			{}
113		}, &nv40_perfctr_func },
114	{}
115};
116
117int
118nv40_pm_new(struct nvkm_device *device, int index, struct nvkm_pm **ppm)
119{
120	return nv40_pm_new_(nv40_pm, device, index, ppm);
121}
122