| 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 | |