| /* |
| * Copyright 2013 Red Hat Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: Ben Skeggs |
| */ |
| #include "priv.h" |
| |
| #include <core/msgqueue.h> |
| #include <subdev/timer.h> |
| |
| bool |
| nvkm_pmu_fan_controlled(struct nvkm_device *device) |
| { |
| struct nvkm_pmu *pmu = device->pmu; |
| |
| /* Internal PMU FW does not currently control fans in any way, |
| * allow SW control of fans instead. |
| */ |
| if (pmu && pmu->func->code.size) |
| return false; |
| |
| /* Default (board-loaded, or VBIOS PMU/PREOS) PMU FW on Fermi |
| * and newer automatically control the fan speed, which would |
| * interfere with SW control. |
| */ |
| return (device->chipset >= 0xc0); |
| } |
| |
| void |
| nvkm_pmu_pgob(struct nvkm_pmu *pmu, bool enable) |
| { |
| if (pmu && pmu->func->pgob) |
| pmu->func->pgob(pmu, enable); |
| } |
| |
| static void |
| nvkm_pmu_recv(struct work_struct *work) |
| { |
| struct nvkm_pmu *pmu = container_of(work, typeof(*pmu), recv.work); |
| return pmu->func->recv(pmu); |
| } |
| |
| int |
| nvkm_pmu_send(struct nvkm_pmu *pmu, u32 reply[2], |
| u32 process, u32 message, u32 data0, u32 data1) |
| { |
| if (!pmu || !pmu->func->send) |
| return -ENODEV; |
| return pmu->func->send(pmu, reply, process, message, data0, data1); |
| } |
| |
| static void |
| nvkm_pmu_intr(struct nvkm_subdev *subdev) |
| { |
| struct nvkm_pmu *pmu = nvkm_pmu(subdev); |
| if (!pmu->func->intr) |
| return; |
| pmu->func->intr(pmu); |
| } |
| |
| static int |
| nvkm_pmu_fini(struct nvkm_subdev *subdev, bool suspend) |
| { |
| struct nvkm_pmu *pmu = nvkm_pmu(subdev); |
| |
| if (pmu->func->fini) |
| pmu->func->fini(pmu); |
| |
| flush_work(&pmu->recv.work); |
| return 0; |
| } |
| |
| static int |
| nvkm_pmu_reset(struct nvkm_pmu *pmu) |
| { |
| struct nvkm_device *device = pmu->subdev.device; |
| |
| if (!pmu->func->enabled(pmu)) |
| return 0; |
| |
| /* Inhibit interrupts, and wait for idle. */ |
| nvkm_wr32(device, 0x10a014, 0x0000ffff); |
| nvkm_msec(device, 2000, |
| if (!nvkm_rd32(device, 0x10a04c)) |
| break; |
| ); |
| |
| /* Reset. */ |
| if (pmu->func->reset) |
| pmu->func->reset(pmu); |
| |
| /* Wait for IMEM/DMEM scrubbing to be complete. */ |
| nvkm_msec(device, 2000, |
| if (!(nvkm_rd32(device, 0x10a10c) & 0x00000006)) |
| break; |
| ); |
| |
| return 0; |
| } |
| |
| static int |
| nvkm_pmu_preinit(struct nvkm_subdev *subdev) |
| { |
| struct nvkm_pmu *pmu = nvkm_pmu(subdev); |
| return nvkm_pmu_reset(pmu); |
| } |
| |
| static int |
| nvkm_pmu_init(struct nvkm_subdev *subdev) |
| { |
| struct nvkm_pmu *pmu = nvkm_pmu(subdev); |
| int ret = nvkm_pmu_reset(pmu); |
| if (ret == 0 && pmu->func->init) |
| ret = pmu->func->init(pmu); |
| return ret; |
| } |
| |
| static int |
| nvkm_pmu_oneinit(struct nvkm_subdev *subdev) |
| { |
| struct nvkm_pmu *pmu = nvkm_pmu(subdev); |
| return nvkm_falcon_v1_new(&pmu->subdev, "PMU", 0x10a000, &pmu->falcon); |
| } |
| |
| static void * |
| nvkm_pmu_dtor(struct nvkm_subdev *subdev) |
| { |
| struct nvkm_pmu *pmu = nvkm_pmu(subdev); |
| nvkm_msgqueue_del(&pmu->queue); |
| nvkm_falcon_del(&pmu->falcon); |
| return nvkm_pmu(subdev); |
| } |
| |
| static const struct nvkm_subdev_func |
| nvkm_pmu = { |
| .dtor = nvkm_pmu_dtor, |
| .preinit = nvkm_pmu_preinit, |
| .oneinit = nvkm_pmu_oneinit, |
| .init = nvkm_pmu_init, |
| .fini = nvkm_pmu_fini, |
| .intr = nvkm_pmu_intr, |
| }; |
| |
| int |
| nvkm_pmu_ctor(const struct nvkm_pmu_func *func, struct nvkm_device *device, |
| int index, struct nvkm_pmu *pmu) |
| { |
| nvkm_subdev_ctor(&nvkm_pmu, device, index, &pmu->subdev); |
| pmu->func = func; |
| INIT_WORK(&pmu->recv.work, nvkm_pmu_recv); |
| init_waitqueue_head(&pmu->recv.wait); |
| return 0; |
| } |
| |
| int |
| nvkm_pmu_new_(const struct nvkm_pmu_func *func, struct nvkm_device *device, |
| int index, struct nvkm_pmu **ppmu) |
| { |
| struct nvkm_pmu *pmu; |
| if (!(pmu = *ppmu = kzalloc(sizeof(*pmu), GFP_KERNEL))) |
| return -ENOMEM; |
| return nvkm_pmu_ctor(func, device, index, *ppmu); |
| } |