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 
26 static void
nv40_perfctr_init(struct nvkm_pm * pm,struct nvkm_perfdom * dom,struct nvkm_perfctr * ctr)27 nv40_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 
43 static void
nv40_perfctr_read(struct nvkm_pm * pm,struct nvkm_perfdom * dom,struct nvkm_perfctr * ctr)44 nv40_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 
58 static void
nv40_perfctr_next(struct nvkm_pm * pm,struct nvkm_perfdom * dom)59 nv40_perfctr_next(struct nvkm_pm *pm, struct nvkm_perfdom *dom)
60 {
61 	struct nvkm_device *device = pm->engine.subdev.device;
62 	struct nv40_pm *nv40pm = container_of(pm, struct nv40_pm, base);
63 
64 	if (nv40pm->sequence != pm->sequence) {
65 		nvkm_wr32(device, 0x400084, 0x00000020);
66 		nv40pm->sequence = pm->sequence;
67 	}
68 }
69 
70 const struct nvkm_funcdom
71 nv40_perfctr_func = {
72 	.init = nv40_perfctr_init,
73 	.read = nv40_perfctr_read,
74 	.next = nv40_perfctr_next,
75 };
76 
77 static const struct nvkm_pm_func
78 nv40_pm_ = {
79 };
80 
81 int
nv40_pm_new_(const struct nvkm_specdom * doms,struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_pm ** ppm)82 nv40_pm_new_(const struct nvkm_specdom *doms, struct nvkm_device *device,
83 	     enum nvkm_subdev_type type, int inst, struct nvkm_pm **ppm)
84 {
85 	struct nv40_pm *pm;
86 	int ret;
87 
88 	if (!(pm = kzalloc(sizeof(*pm), GFP_KERNEL)))
89 		return -ENOMEM;
90 	*ppm = &pm->base;
91 
92 	ret = nvkm_pm_ctor(&nv40_pm_, device, type, inst, &pm->base);
93 	if (ret)
94 		return ret;
95 
96 	return nvkm_perfdom_new(&pm->base, "pc", 0, 0, 0, 4, doms);
97 }
98 
99 static const struct nvkm_specdom
100 nv40_pm[] = {
101 	{ 0x20, (const struct nvkm_specsig[]) {
102 			{}
103 		}, &nv40_perfctr_func },
104 	{ 0x20, (const struct nvkm_specsig[]) {
105 			{}
106 		}, &nv40_perfctr_func },
107 	{ 0x20, (const struct nvkm_specsig[]) {
108 			{}
109 		}, &nv40_perfctr_func },
110 	{ 0x20, (const struct nvkm_specsig[]) {
111 			{}
112 		}, &nv40_perfctr_func },
113 	{ 0x20, (const struct nvkm_specsig[]) {
114 			{}
115 		}, &nv40_perfctr_func },
116 	{}
117 };
118 
119 int
nv40_pm_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_pm ** ppm)120 nv40_pm_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_pm **ppm)
121 {
122 	return nv40_pm_new_(nv40_pm, device, type, inst, ppm);
123 }
124