linux_kernel/drivers/gpu/drm/nouveau/nvkm/engine/cipher/g84.c

/*
 * Copyright 2012 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 <engine/cipher.h>
#include <engine/fifo.h>

#include <core/client.h>
#include <core/enum.h>
#include <core/gpuobj.h>

#include <nvif/class.h>

static int
g84_cipher_oclass_bind(struct nvkm_object *object, struct nvkm_gpuobj *parent,
		       int align, struct nvkm_gpuobj **pgpuobj)
{
	int ret = nvkm_gpuobj_new(object->engine->subdev.device, 16,
				  align, false, parent, pgpuobj);
	if (ret == 0) {
		nvkm_kmap(*pgpuobj);
		nvkm_wo32(*pgpuobj, 0x00, object->oclass);
		nvkm_wo32(*pgpuobj, 0x04, 0x00000000);
		nvkm_wo32(*pgpuobj, 0x08, 0x00000000);
		nvkm_wo32(*pgpuobj, 0x0c, 0x00000000);
		nvkm_done(*pgpuobj);
	}
	return ret;
}

static const struct nvkm_object_func
g84_cipher_oclass_func = {
	.bind = g84_cipher_oclass_bind,
};

static int
g84_cipher_cclass_bind(struct nvkm_object *object, struct nvkm_gpuobj *parent,
		       int align, struct nvkm_gpuobj **pgpuobj)
{
	return nvkm_gpuobj_new(object->engine->subdev.device, 256,
			       align, true, parent, pgpuobj);

}

static const struct nvkm_object_func
g84_cipher_cclass = {
	.bind = g84_cipher_cclass_bind,
};

static const struct nvkm_bitfield
g84_cipher_intr_mask[] = {
	{ 0x00000001, "INVALID_STATE" },
	{ 0x00000002, "ILLEGAL_MTHD" },
	{ 0x00000004, "ILLEGAL_CLASS" },
	{ 0x00000080, "QUERY" },
	{ 0x00000100, "FAULT" },
	{}
};

static void
g84_cipher_intr(struct nvkm_engine *cipher)
{
	struct nvkm_subdev *subdev = &cipher->subdev;
	struct nvkm_device *device = subdev->device;
	struct nvkm_fifo *fifo = device->fifo;
	struct nvkm_fifo_chan *chan;
	u32 stat = nvkm_rd32(device, 0x102130);
	u32 mthd = nvkm_rd32(device, 0x102190);
	u32 data = nvkm_rd32(device, 0x102194);
	u32 inst = nvkm_rd32(device, 0x102188) & 0x7fffffff;
	unsigned long flags;
	char msg[128];

	chan = nvkm_fifo_chan_inst(fifo, (u64)inst << 12, &flags);
	if (stat) {
		nvkm_snprintbf(msg, sizeof(msg), g84_cipher_intr_mask, stat);
		nvkm_error(subdev,  "%08x [%s] ch %d [%010llx %s] "
				    "mthd %04x data %08x\n", stat, msg,
			   chan ? chan->chid : -1, (u64)inst << 12,
			   chan ? chan->object.client->name : "unknown",
			   mthd, data);
	}
	nvkm_fifo_chan_put(fifo, flags, &chan);

	nvkm_wr32(device, 0x102130, stat);
	nvkm_wr32(device, 0x10200c, 0x10);
}

static int
g84_cipher_init(struct nvkm_engine *cipher)
{
	struct nvkm_device *device = cipher->subdev.device;
	nvkm_wr32(device, 0x102130, 0xffffffff);
	nvkm_wr32(device, 0x102140, 0xffffffbf);
	nvkm_wr32(device, 0x10200c, 0x00000010);
	return 0;
}

static const struct nvkm_engine_func
g84_cipher = {
	.init = g84_cipher_init,
	.intr = g84_cipher_intr,
	.cclass = &g84_cipher_cclass,
	.sclass = {
		{ -1, -1, NV74_CIPHER, &g84_cipher_oclass_func },
		{}
	}
};

int
g84_cipher_new(struct nvkm_device *device, int index,
	       struct nvkm_engine **pengine)
{
	return nvkm_engine_new_(&g84_cipher, device, index, true, pengine);
}