1 | /* $NetBSD: nouveau_engine_device_ctrl.c,v 1.1.1.1 2014/08/06 12:36:24 riastradh Exp $ */ |
2 | |
3 | /* |
4 | * Copyright 2013 Red Hat Inc. |
5 | * |
6 | * Permission is hereby granted, free of charge, to any person obtaining a |
7 | * copy of this software and associated documentation files (the "Software"), |
8 | * to deal in the Software without restriction, including without limitation |
9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
10 | * and/or sell copies of the Software, and to permit persons to whom the |
11 | * Software is furnished to do so, subject to the following conditions: |
12 | * |
13 | * The above copyright notice and this permission notice shall be included in |
14 | * all copies or substantial portions of the Software. |
15 | * |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
22 | * OTHER DEALINGS IN THE SOFTWARE. |
23 | * |
24 | * Authors: Ben Skeggs <bskeggs@redhat.com> |
25 | */ |
26 | |
27 | #include <sys/cdefs.h> |
28 | __KERNEL_RCSID(0, "$NetBSD: nouveau_engine_device_ctrl.c,v 1.1.1.1 2014/08/06 12:36:24 riastradh Exp $" ); |
29 | |
30 | #include <core/object.h> |
31 | #include <core/class.h> |
32 | |
33 | #include <subdev/clock.h> |
34 | |
35 | #include "priv.h" |
36 | |
37 | static int |
38 | nouveau_control_mthd_pstate_info(struct nouveau_object *object, u32 mthd, |
39 | void *data, u32 size) |
40 | { |
41 | struct nouveau_clock *clk = nouveau_clock(object); |
42 | struct nv_control_pstate_info *args = data; |
43 | |
44 | if (size < sizeof(*args)) |
45 | return -EINVAL; |
46 | |
47 | if (clk) { |
48 | args->count = clk->state_nr; |
49 | args->ustate = clk->ustate; |
50 | args->pstate = clk->pstate; |
51 | } else { |
52 | args->count = 0; |
53 | args->ustate = NV_CONTROL_PSTATE_INFO_USTATE_DISABLE; |
54 | args->pstate = NV_CONTROL_PSTATE_INFO_PSTATE_UNKNOWN; |
55 | } |
56 | |
57 | return 0; |
58 | } |
59 | |
60 | static int |
61 | nouveau_control_mthd_pstate_attr(struct nouveau_object *object, u32 mthd, |
62 | void *data, u32 size) |
63 | { |
64 | struct nouveau_clock *clk = nouveau_clock(object); |
65 | struct nv_control_pstate_attr *args = data; |
66 | struct nouveau_clocks *domain; |
67 | struct nouveau_pstate *pstate; |
68 | struct nouveau_cstate *cstate; |
69 | int i = 0, j = -1; |
70 | u32 lo, hi; |
71 | |
72 | if ((size < sizeof(*args)) || !clk || |
73 | (args->state >= 0 && args->state >= clk->state_nr)) |
74 | return -EINVAL; |
75 | domain = clk->domains; |
76 | |
77 | while (domain->name != nv_clk_src_max) { |
78 | if (domain->mname && ++j == args->index) |
79 | break; |
80 | domain++; |
81 | } |
82 | |
83 | if (domain->name == nv_clk_src_max) |
84 | return -EINVAL; |
85 | |
86 | if (args->state != NV_CONTROL_PSTATE_ATTR_STATE_CURRENT) { |
87 | list_for_each_entry(pstate, &clk->states, head) { |
88 | if (i++ == args->state) |
89 | break; |
90 | } |
91 | |
92 | lo = pstate->base.domain[domain->name]; |
93 | hi = lo; |
94 | list_for_each_entry(cstate, &pstate->list, head) { |
95 | lo = min(lo, cstate->domain[domain->name]); |
96 | hi = max(hi, cstate->domain[domain->name]); |
97 | } |
98 | |
99 | args->state = pstate->pstate; |
100 | } else { |
101 | lo = max(clk->read(clk, domain->name), 0); |
102 | hi = lo; |
103 | } |
104 | |
105 | snprintf(args->name, sizeof(args->name), "%s" , domain->mname); |
106 | snprintf(args->unit, sizeof(args->unit), "MHz" ); |
107 | args->min = lo / domain->mdiv; |
108 | args->max = hi / domain->mdiv; |
109 | |
110 | args->index = 0; |
111 | while ((++domain)->name != nv_clk_src_max) { |
112 | if (domain->mname) { |
113 | args->index = ++j; |
114 | break; |
115 | } |
116 | } |
117 | |
118 | return 0; |
119 | } |
120 | |
121 | static int |
122 | nouveau_control_mthd_pstate_user(struct nouveau_object *object, u32 mthd, |
123 | void *data, u32 size) |
124 | { |
125 | struct nouveau_clock *clk = nouveau_clock(object); |
126 | struct nv_control_pstate_user *args = data; |
127 | |
128 | if (size < sizeof(*args) || !clk) |
129 | return -EINVAL; |
130 | |
131 | return nouveau_clock_ustate(clk, args->state); |
132 | } |
133 | |
134 | struct nouveau_oclass |
135 | nouveau_control_oclass[] = { |
136 | { .handle = NV_CONTROL_CLASS, |
137 | .ofuncs = &nouveau_object_ofuncs, |
138 | .omthds = (struct nouveau_omthds[]) { |
139 | { NV_CONTROL_PSTATE_INFO, |
140 | NV_CONTROL_PSTATE_INFO, nouveau_control_mthd_pstate_info }, |
141 | { NV_CONTROL_PSTATE_ATTR, |
142 | NV_CONTROL_PSTATE_ATTR, nouveau_control_mthd_pstate_attr }, |
143 | { NV_CONTROL_PSTATE_USER, |
144 | NV_CONTROL_PSTATE_USER, nouveau_control_mthd_pstate_user }, |
145 | {}, |
146 | }, |
147 | }, |
148 | {} |
149 | }; |
150 | |