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/*
* Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
*
* 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 AUTHORS OR COPYRIGHT HOLDERS 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.
*/
#include "priv.h"
#include <core/msgqueue.h>
#include <engine/falcon.h>
static void *
nvkm_sec2_dtor(struct nvkm_engine *engine)
{
struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
nvkm_msgqueue_del(&sec2->queue);
nvkm_falcon_del(&sec2->falcon);
return sec2;
}
static void
nvkm_sec2_intr(struct nvkm_engine *engine)
{
struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
struct nvkm_subdev *subdev = &engine->subdev;
struct nvkm_device *device = subdev->device;
u32 disp = nvkm_rd32(device, 0x8701c);
u32 intr = nvkm_rd32(device, 0x87008) & disp & ~(disp >> 16);
if (intr & 0x00000040) {
schedule_work(&sec2->work);
nvkm_wr32(device, 0x87004, 0x00000040);
intr &= ~0x00000040;
}
if (intr) {
nvkm_error(subdev, "unhandled intr %08x\n", intr);
nvkm_wr32(device, 0x87004, intr);
}
}
static void
nvkm_sec2_recv(struct work_struct *work)
{
struct nvkm_sec2 *sec2 = container_of(work, typeof(*sec2), work);
if (!sec2->queue) {
nvkm_warn(&sec2->engine.subdev,
"recv function called while no firmware set!\n");
return;
}
nvkm_msgqueue_recv(sec2->queue);
}
static int
nvkm_sec2_oneinit(struct nvkm_engine *engine)
{
struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
return nvkm_falcon_v1_new(&sec2->engine.subdev, "SEC2", 0x87000,
&sec2->falcon);
}
static int
nvkm_sec2_fini(struct nvkm_engine *engine, bool suspend)
{
struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
flush_work(&sec2->work);
return 0;
}
static const struct nvkm_engine_func
nvkm_sec2 = {
.dtor = nvkm_sec2_dtor,
.oneinit = nvkm_sec2_oneinit,
.fini = nvkm_sec2_fini,
.intr = nvkm_sec2_intr,
};
int
nvkm_sec2_new_(struct nvkm_device *device, int index,
struct nvkm_sec2 **psec2)
{
struct nvkm_sec2 *sec2;
if (!(sec2 = *psec2 = kzalloc(sizeof(*sec2), GFP_KERNEL)))
return -ENOMEM;
INIT_WORK(&sec2->work, nvkm_sec2_recv);
return nvkm_engine_ctor(&nvkm_sec2, device, index, true, &sec2->engine);
};
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