/*
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* Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include "priv.h"
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#include <core/msgqueue.h>
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#include <engine/falcon.h>
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static void *
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nvkm_sec2_dtor(struct nvkm_engine *engine)
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{
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struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
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nvkm_msgqueue_del(&sec2->queue);
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nvkm_falcon_del(&sec2->falcon);
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return sec2;
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}
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static void
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nvkm_sec2_intr(struct nvkm_engine *engine)
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{
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struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
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struct nvkm_subdev *subdev = &engine->subdev;
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struct nvkm_device *device = subdev->device;
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u32 disp = nvkm_rd32(device, 0x8701c);
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u32 intr = nvkm_rd32(device, 0x87008) & disp & ~(disp >> 16);
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if (intr & 0x00000040) {
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schedule_work(&sec2->work);
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nvkm_wr32(device, 0x87004, 0x00000040);
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intr &= ~0x00000040;
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}
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if (intr) {
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nvkm_error(subdev, "unhandled intr %08x\n", intr);
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nvkm_wr32(device, 0x87004, intr);
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}
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}
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static void
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nvkm_sec2_recv(struct work_struct *work)
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{
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struct nvkm_sec2 *sec2 = container_of(work, typeof(*sec2), work);
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if (!sec2->queue) {
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nvkm_warn(&sec2->engine.subdev,
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"recv function called while no firmware set!\n");
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return;
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}
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nvkm_msgqueue_recv(sec2->queue);
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}
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static int
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nvkm_sec2_oneinit(struct nvkm_engine *engine)
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{
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struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
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return nvkm_falcon_v1_new(&sec2->engine.subdev, "SEC2", 0x87000,
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&sec2->falcon);
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}
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static int
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nvkm_sec2_fini(struct nvkm_engine *engine, bool suspend)
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{
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struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
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flush_work(&sec2->work);
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return 0;
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}
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static const struct nvkm_engine_func
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nvkm_sec2 = {
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.dtor = nvkm_sec2_dtor,
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.oneinit = nvkm_sec2_oneinit,
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.fini = nvkm_sec2_fini,
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.intr = nvkm_sec2_intr,
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};
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int
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nvkm_sec2_new_(struct nvkm_device *device, int index,
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struct nvkm_sec2 **psec2)
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{
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struct nvkm_sec2 *sec2;
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if (!(sec2 = *psec2 = kzalloc(sizeof(*sec2), GFP_KERNEL)))
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return -ENOMEM;
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INIT_WORK(&sec2->work, nvkm_sec2_recv);
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return nvkm_engine_ctor(&nvkm_sec2, device, index, true, &sec2->engine);
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};
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