1/*	$NetBSD: nouveau_nvkm_engine_fifo_gpfifog84.c,v 1.3 2021/12/18 23:45:35 riastradh Exp $	*/
2
3/*
4 * Copyright 2012 Red Hat Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Ben Skeggs
25 */
26#include <sys/cdefs.h>
27__KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_engine_fifo_gpfifog84.c,v 1.3 2021/12/18 23:45:35 riastradh Exp $");
28
29#include "channv50.h"
30
31#include <core/client.h>
32#include <core/ramht.h>
33
34#include <nvif/class.h>
35#include <nvif/cl826f.h>
36#include <nvif/unpack.h>
37
38static int
39g84_fifo_gpfifo_new(struct nvkm_fifo *base, const struct nvkm_oclass *oclass,
40		    void *data, u32 size, struct nvkm_object **pobject)
41{
42	struct nvkm_object *parent = oclass->parent;
43	union {
44		struct g82_channel_gpfifo_v0 v0;
45	} *args = data;
46	struct nv50_fifo *fifo = nv50_fifo(base);
47	struct nv50_fifo_chan *chan;
48	u64 ioffset, ilength;
49	int ret = -ENOSYS;
50
51	nvif_ioctl(parent, "create channel gpfifo size %d\n", size);
52	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
53		nvif_ioctl(parent, "create channel gpfifo vers %d vmm %"PRIx64" "
54				   "pushbuf %"PRIx64" ioffset %016"PRIx64" "
55				   "ilength %08x\n",
56			   args->v0.version, args->v0.vmm, args->v0.pushbuf,
57			   args->v0.ioffset, args->v0.ilength);
58		if (!args->v0.pushbuf)
59			return -EINVAL;
60	} else
61		return ret;
62
63	if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
64		return -ENOMEM;
65	*pobject = &chan->base.object;
66
67	ret = g84_fifo_chan_ctor(fifo, args->v0.vmm, args->v0.pushbuf,
68				 oclass, chan);
69	if (ret)
70		return ret;
71
72	args->v0.chid = chan->base.chid;
73	ioffset = args->v0.ioffset;
74	ilength = order_base_2(args->v0.ilength / 8);
75
76	nvkm_kmap(chan->ramfc);
77	nvkm_wo32(chan->ramfc, 0x3c, 0x403f6078);
78	nvkm_wo32(chan->ramfc, 0x44, 0x01003fff);
79	nvkm_wo32(chan->ramfc, 0x48, chan->base.push->node->offset >> 4);
80	nvkm_wo32(chan->ramfc, 0x50, lower_32_bits(ioffset));
81	nvkm_wo32(chan->ramfc, 0x54, upper_32_bits(ioffset) | (ilength << 16));
82	nvkm_wo32(chan->ramfc, 0x60, 0x7fffffff);
83	nvkm_wo32(chan->ramfc, 0x78, 0x00000000);
84	nvkm_wo32(chan->ramfc, 0x7c, 0x30000001);
85	nvkm_wo32(chan->ramfc, 0x80, ((chan->ramht->bits - 9) << 27) |
86				     (4 << 24) /* SEARCH_FULL */ |
87				     (chan->ramht->gpuobj->node->offset >> 4));
88	nvkm_wo32(chan->ramfc, 0x88, chan->cache->addr >> 10);
89	nvkm_wo32(chan->ramfc, 0x98, chan->base.inst->addr >> 12);
90	nvkm_done(chan->ramfc);
91	return 0;
92}
93
94const struct nvkm_fifo_chan_oclass
95g84_fifo_gpfifo_oclass = {
96	.base.oclass = G82_CHANNEL_GPFIFO,
97	.base.minver = 0,
98	.base.maxver = 0,
99	.ctor = g84_fifo_gpfifo_new,
100};
101