1 /*
2 * Copyright 2012 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs
23 */
24 #include "channv04.h"
25 #include "regsnv04.h"
26
27 #include <core/client.h>
28 #include <core/gpuobj.h>
29 #include <subdev/instmem.h>
30
31 #include <nvif/class.h>
32 #include <nvif/cl006b.h>
33 #include <nvif/unpack.h>
34
35 static int
nv17_fifo_dma_new(struct nvkm_fifo * base,const struct nvkm_oclass * oclass,void * data,u32 size,struct nvkm_object ** pobject)36 nv17_fifo_dma_new(struct nvkm_fifo *base, const struct nvkm_oclass *oclass,
37 void *data, u32 size, struct nvkm_object **pobject)
38 {
39 struct nvkm_object *parent = oclass->parent;
40 union {
41 struct nv03_channel_dma_v0 v0;
42 } *args = data;
43 struct nv04_fifo *fifo = nv04_fifo(base);
44 struct nv04_fifo_chan *chan = NULL;
45 struct nvkm_device *device = fifo->base.engine.subdev.device;
46 struct nvkm_instmem *imem = device->imem;
47 int ret = -ENOSYS;
48
49 nvif_ioctl(parent, "create channel dma size %d\n", size);
50 if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
51 nvif_ioctl(parent, "create channel dma vers %d pushbuf %llx "
52 "offset %08x\n", args->v0.version,
53 args->v0.pushbuf, args->v0.offset);
54 if (!args->v0.pushbuf)
55 return -EINVAL;
56 } else
57 return ret;
58
59 if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
60 return -ENOMEM;
61 *pobject = &chan->base.object;
62
63 ret = nvkm_fifo_chan_ctor(&nv04_fifo_dma_func, &fifo->base,
64 0x1000, 0x1000, false, 0, args->v0.pushbuf,
65 BIT(NV04_FIFO_ENGN_SW) |
66 BIT(NV04_FIFO_ENGN_GR) |
67 BIT(NV04_FIFO_ENGN_MPEG) | /* NV31- */
68 BIT(NV04_FIFO_ENGN_DMA),
69 0, 0x800000, 0x10000, oclass, &chan->base);
70 chan->fifo = fifo;
71 if (ret)
72 return ret;
73
74 args->v0.chid = chan->base.chid;
75 chan->ramfc = chan->base.chid * 64;
76
77 nvkm_kmap(imem->ramfc);
78 nvkm_wo32(imem->ramfc, chan->ramfc + 0x00, args->v0.offset);
79 nvkm_wo32(imem->ramfc, chan->ramfc + 0x04, args->v0.offset);
80 nvkm_wo32(imem->ramfc, chan->ramfc + 0x0c, chan->base.push->addr >> 4);
81 nvkm_wo32(imem->ramfc, chan->ramfc + 0x14,
82 NV_PFIFO_CACHE1_DMA_FETCH_TRIG_128_BYTES |
83 NV_PFIFO_CACHE1_DMA_FETCH_SIZE_128_BYTES |
84 #ifdef __BIG_ENDIAN
85 NV_PFIFO_CACHE1_BIG_ENDIAN |
86 #endif
87 NV_PFIFO_CACHE1_DMA_FETCH_MAX_REQS_8);
88 nvkm_done(imem->ramfc);
89 return 0;
90 }
91
92 const struct nvkm_fifo_chan_oclass
93 nv17_fifo_dma_oclass = {
94 .base.oclass = NV17_CHANNEL_DMA,
95 .base.minver = 0,
96 .base.maxver = 0,
97 .ctor = nv17_fifo_dma_new,
98 };
99