1c39f472eSBen Skeggs /* 2c39f472eSBen Skeggs * Copyright 2013 Red Hat Inc. 3c39f472eSBen Skeggs * 4c39f472eSBen Skeggs * Permission is hereby granted, free of charge, to any person obtaining a 5c39f472eSBen Skeggs * copy of this software and associated documentation files (the "Software"), 6c39f472eSBen Skeggs * to deal in the Software without restriction, including without limitation 7c39f472eSBen Skeggs * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8c39f472eSBen Skeggs * and/or sell copies of the Software, and to permit persons to whom the 9c39f472eSBen Skeggs * Software is furnished to do so, subject to the following conditions: 10c39f472eSBen Skeggs * 11c39f472eSBen Skeggs * The above copyright notice and this permission notice shall be included in 12c39f472eSBen Skeggs * all copies or substantial portions of the Software. 13c39f472eSBen Skeggs * 14c39f472eSBen Skeggs * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15c39f472eSBen Skeggs * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16c39f472eSBen Skeggs * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17c39f472eSBen Skeggs * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18c39f472eSBen Skeggs * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19c39f472eSBen Skeggs * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20c39f472eSBen Skeggs * OTHER DEALINGS IN THE SOFTWARE. 21c39f472eSBen Skeggs * 22c39f472eSBen Skeggs * Authors: Ben Skeggs <bskeggs@redhat.com> 23c39f472eSBen Skeggs */ 240e29998aSBen Skeggs #include "ctrl.h" 25c39f472eSBen Skeggs 269719047bSBen Skeggs #include <core/client.h> 279719047bSBen Skeggs #include <subdev/clk.h> 289719047bSBen Skeggs 299719047bSBen Skeggs #include <nvif/class.h> 309719047bSBen Skeggs #include <nvif/ioctl.h> 319719047bSBen Skeggs #include <nvif/unpack.h> 329719047bSBen Skeggs 33c39f472eSBen Skeggs static int 340e29998aSBen Skeggs nvkm_control_mthd_pstate_info(struct nvkm_control *ctrl, void *data, u32 size) 35c39f472eSBen Skeggs { 36c39f472eSBen Skeggs union { 37c39f472eSBen Skeggs struct nvif_control_pstate_info_v0 v0; 38c39f472eSBen Skeggs } *args = data; 390e29998aSBen Skeggs struct nvkm_clk *clk = ctrl->device->clk; 40c39f472eSBen Skeggs int ret; 41c39f472eSBen Skeggs 420e29998aSBen Skeggs nvif_ioctl(&ctrl->object, "control pstate info size %d\n", size); 43c39f472eSBen Skeggs if (nvif_unpack(args->v0, 0, 0, false)) { 440e29998aSBen Skeggs nvif_ioctl(&ctrl->object, "control pstate info vers %d\n", 45c39f472eSBen Skeggs args->v0.version); 46c39f472eSBen Skeggs } else 47c39f472eSBen Skeggs return ret; 48c39f472eSBen Skeggs 49c39f472eSBen Skeggs if (clk) { 50c39f472eSBen Skeggs args->v0.count = clk->state_nr; 51c39f472eSBen Skeggs args->v0.ustate_ac = clk->ustate_ac; 52c39f472eSBen Skeggs args->v0.ustate_dc = clk->ustate_dc; 53c39f472eSBen Skeggs args->v0.pwrsrc = clk->pwrsrc; 54c39f472eSBen Skeggs args->v0.pstate = clk->pstate; 55c39f472eSBen Skeggs } else { 56c39f472eSBen Skeggs args->v0.count = 0; 57c39f472eSBen Skeggs args->v0.ustate_ac = NVIF_CONTROL_PSTATE_INFO_V0_USTATE_DISABLE; 58c39f472eSBen Skeggs args->v0.ustate_dc = NVIF_CONTROL_PSTATE_INFO_V0_USTATE_DISABLE; 59c39f472eSBen Skeggs args->v0.pwrsrc = -ENOSYS; 60c39f472eSBen Skeggs args->v0.pstate = NVIF_CONTROL_PSTATE_INFO_V0_PSTATE_UNKNOWN; 61c39f472eSBen Skeggs } 62c39f472eSBen Skeggs 63c39f472eSBen Skeggs return 0; 64c39f472eSBen Skeggs } 65c39f472eSBen Skeggs 66c39f472eSBen Skeggs static int 670e29998aSBen Skeggs nvkm_control_mthd_pstate_attr(struct nvkm_control *ctrl, void *data, u32 size) 68c39f472eSBen Skeggs { 69c39f472eSBen Skeggs union { 70c39f472eSBen Skeggs struct nvif_control_pstate_attr_v0 v0; 71c39f472eSBen Skeggs } *args = data; 720e29998aSBen Skeggs struct nvkm_clk *clk = ctrl->device->clk; 736625f55cSBen Skeggs const struct nvkm_domain *domain; 749719047bSBen Skeggs struct nvkm_pstate *pstate; 759719047bSBen Skeggs struct nvkm_cstate *cstate; 76c39f472eSBen Skeggs int i = 0, j = -1; 77c39f472eSBen Skeggs u32 lo, hi; 78c39f472eSBen Skeggs int ret; 79c39f472eSBen Skeggs 800e29998aSBen Skeggs nvif_ioctl(&ctrl->object, "control pstate attr size %d\n", size); 81c39f472eSBen Skeggs if (nvif_unpack(args->v0, 0, 0, false)) { 820e29998aSBen Skeggs nvif_ioctl(&ctrl->object, 830e29998aSBen Skeggs "control pstate attr vers %d state %d index %d\n", 84c39f472eSBen Skeggs args->v0.version, args->v0.state, args->v0.index); 85c39f472eSBen Skeggs if (!clk) 86c39f472eSBen Skeggs return -ENODEV; 87c39f472eSBen Skeggs if (args->v0.state < NVIF_CONTROL_PSTATE_ATTR_V0_STATE_CURRENT) 88c39f472eSBen Skeggs return -EINVAL; 89c39f472eSBen Skeggs if (args->v0.state >= clk->state_nr) 90c39f472eSBen Skeggs return -EINVAL; 91c39f472eSBen Skeggs } else 92c39f472eSBen Skeggs return ret; 93c39f472eSBen Skeggs domain = clk->domains; 94c39f472eSBen Skeggs 95c39f472eSBen Skeggs while (domain->name != nv_clk_src_max) { 96c39f472eSBen Skeggs if (domain->mname && ++j == args->v0.index) 97c39f472eSBen Skeggs break; 98c39f472eSBen Skeggs domain++; 99c39f472eSBen Skeggs } 100c39f472eSBen Skeggs 101c39f472eSBen Skeggs if (domain->name == nv_clk_src_max) 102c39f472eSBen Skeggs return -EINVAL; 103c39f472eSBen Skeggs 104c39f472eSBen Skeggs if (args->v0.state != NVIF_CONTROL_PSTATE_ATTR_V0_STATE_CURRENT) { 105c39f472eSBen Skeggs list_for_each_entry(pstate, &clk->states, head) { 106c39f472eSBen Skeggs if (i++ == args->v0.state) 107c39f472eSBen Skeggs break; 108c39f472eSBen Skeggs } 109c39f472eSBen Skeggs 110c39f472eSBen Skeggs lo = pstate->base.domain[domain->name]; 111c39f472eSBen Skeggs hi = lo; 112c39f472eSBen Skeggs list_for_each_entry(cstate, &pstate->list, head) { 113c39f472eSBen Skeggs lo = min(lo, cstate->domain[domain->name]); 114c39f472eSBen Skeggs hi = max(hi, cstate->domain[domain->name]); 115c39f472eSBen Skeggs } 116c39f472eSBen Skeggs 117c39f472eSBen Skeggs args->v0.state = pstate->pstate; 118c39f472eSBen Skeggs } else { 1196625f55cSBen Skeggs lo = max(nvkm_clk_read(clk, domain->name), 0); 120c39f472eSBen Skeggs hi = lo; 121c39f472eSBen Skeggs } 122c39f472eSBen Skeggs 123c39f472eSBen Skeggs snprintf(args->v0.name, sizeof(args->v0.name), "%s", domain->mname); 124c39f472eSBen Skeggs snprintf(args->v0.unit, sizeof(args->v0.unit), "MHz"); 125c39f472eSBen Skeggs args->v0.min = lo / domain->mdiv; 126c39f472eSBen Skeggs args->v0.max = hi / domain->mdiv; 127c39f472eSBen Skeggs 128c39f472eSBen Skeggs args->v0.index = 0; 129c39f472eSBen Skeggs while ((++domain)->name != nv_clk_src_max) { 130c39f472eSBen Skeggs if (domain->mname) { 131c39f472eSBen Skeggs args->v0.index = ++j; 132c39f472eSBen Skeggs break; 133c39f472eSBen Skeggs } 134c39f472eSBen Skeggs } 135c39f472eSBen Skeggs 136c39f472eSBen Skeggs return 0; 137c39f472eSBen Skeggs } 138c39f472eSBen Skeggs 139c39f472eSBen Skeggs static int 1400e29998aSBen Skeggs nvkm_control_mthd_pstate_user(struct nvkm_control *ctrl, void *data, u32 size) 141c39f472eSBen Skeggs { 142c39f472eSBen Skeggs union { 143c39f472eSBen Skeggs struct nvif_control_pstate_user_v0 v0; 144c39f472eSBen Skeggs } *args = data; 1450e29998aSBen Skeggs struct nvkm_clk *clk = ctrl->device->clk; 146c39f472eSBen Skeggs int ret; 147c39f472eSBen Skeggs 1480e29998aSBen Skeggs nvif_ioctl(&ctrl->object, "control pstate user size %d\n", size); 149c39f472eSBen Skeggs if (nvif_unpack(args->v0, 0, 0, false)) { 1500e29998aSBen Skeggs nvif_ioctl(&ctrl->object, 1510e29998aSBen Skeggs "control pstate user vers %d ustate %d pwrsrc %d\n", 1520e29998aSBen Skeggs args->v0.version, args->v0.ustate, args->v0.pwrsrc); 153c39f472eSBen Skeggs if (!clk) 154c39f472eSBen Skeggs return -ENODEV; 155c39f472eSBen Skeggs } else 156c39f472eSBen Skeggs return ret; 157c39f472eSBen Skeggs 158c39f472eSBen Skeggs if (args->v0.pwrsrc >= 0) { 1599719047bSBen Skeggs ret |= nvkm_clk_ustate(clk, args->v0.ustate, args->v0.pwrsrc); 160c39f472eSBen Skeggs } else { 1619719047bSBen Skeggs ret |= nvkm_clk_ustate(clk, args->v0.ustate, 0); 1629719047bSBen Skeggs ret |= nvkm_clk_ustate(clk, args->v0.ustate, 1); 163c39f472eSBen Skeggs } 164c39f472eSBen Skeggs 165c39f472eSBen Skeggs return ret; 166c39f472eSBen Skeggs } 167c39f472eSBen Skeggs 168c39f472eSBen Skeggs static int 1699719047bSBen Skeggs nvkm_control_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size) 170c39f472eSBen Skeggs { 1710e29998aSBen Skeggs struct nvkm_control *ctrl = nvkm_control(object); 172c39f472eSBen Skeggs switch (mthd) { 173c39f472eSBen Skeggs case NVIF_CONTROL_PSTATE_INFO: 1740e29998aSBen Skeggs return nvkm_control_mthd_pstate_info(ctrl, data, size); 175c39f472eSBen Skeggs case NVIF_CONTROL_PSTATE_ATTR: 1760e29998aSBen Skeggs return nvkm_control_mthd_pstate_attr(ctrl, data, size); 177c39f472eSBen Skeggs case NVIF_CONTROL_PSTATE_USER: 1780e29998aSBen Skeggs return nvkm_control_mthd_pstate_user(ctrl, data, size); 179c39f472eSBen Skeggs default: 180c39f472eSBen Skeggs break; 181c39f472eSBen Skeggs } 182c39f472eSBen Skeggs return -EINVAL; 183c39f472eSBen Skeggs } 184c39f472eSBen Skeggs 1850e29998aSBen Skeggs static const struct nvkm_object_func 1860e29998aSBen Skeggs nvkm_control = { 1879719047bSBen Skeggs .mthd = nvkm_control_mthd, 188c39f472eSBen Skeggs }; 189c39f472eSBen Skeggs 1900e29998aSBen Skeggs static int 1910e29998aSBen Skeggs nvkm_control_new(struct nvkm_device *device, const struct nvkm_oclass *oclass, 1920e29998aSBen Skeggs void *data, u32 size, struct nvkm_object **pobject) 1930e29998aSBen Skeggs { 1940e29998aSBen Skeggs struct nvkm_control *ctrl; 1950e29998aSBen Skeggs 1960e29998aSBen Skeggs if (!(ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL))) 1970e29998aSBen Skeggs return -ENOMEM; 1980e29998aSBen Skeggs *pobject = &ctrl->object; 1990e29998aSBen Skeggs ctrl->device = device; 2000e29998aSBen Skeggs 2010e29998aSBen Skeggs nvkm_object_ctor(&nvkm_control, oclass, &ctrl->object); 2020e29998aSBen Skeggs return 0; 2030e29998aSBen Skeggs } 2040e29998aSBen Skeggs 2050e29998aSBen Skeggs const struct nvkm_device_oclass 2060e29998aSBen Skeggs nvkm_control_oclass = { 20708f7633cSBen Skeggs .base.oclass = NVIF_CLASS_CONTROL, 2080e29998aSBen Skeggs .base.minver = -1, 2090e29998aSBen Skeggs .base.maxver = -1, 2100e29998aSBen Skeggs .ctor = nvkm_control_new, 211c39f472eSBen Skeggs }; 212