drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv10.c

   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
  36 nv10_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                                   (1ULL << NVKM_ENGINE_DMAOBJ) |
  66                                   (1ULL << NVKM_ENGINE_GR) |
  67                                   (1ULL << NVKM_ENGINE_SW),
  68                                   0, 0x800000, 0x10000, oclass, &chan->base);
  69         chan->fifo = fifo;
  70         if (ret)
  71                 return ret;
  72
  73         args->v0.chid = chan->base.chid;
  74         chan->ramfc = chan->base.chid * 32;
  75
  76         nvkm_kmap(imem->ramfc);
  77         nvkm_wo32(imem->ramfc, chan->ramfc + 0x00, args->v0.offset);
  78         nvkm_wo32(imem->ramfc, chan->ramfc + 0x04, args->v0.offset);
  79         nvkm_wo32(imem->ramfc, chan->ramfc + 0x0c, chan->base.push->addr >> 4);
  80         nvkm_wo32(imem->ramfc, chan->ramfc + 0x14,
  81                                NV_PFIFO_CACHE1_DMA_FETCH_TRIG_128_BYTES |
  82                                NV_PFIFO_CACHE1_DMA_FETCH_SIZE_128_BYTES |
  83 #ifdef __BIG_ENDIAN
  84                                NV_PFIFO_CACHE1_BIG_ENDIAN |
  85 #endif
  86                                NV_PFIFO_CACHE1_DMA_FETCH_MAX_REQS_8);
  87         nvkm_done(imem->ramfc);
  88         return 0;
  89 }
  90
  91 const struct nvkm_fifo_chan_oclass
  92 nv10_fifo_dma_oclass = {
  93         .base.oclass = NV10_CHANNEL_DMA,
  94         .base.minver = 0,
  95         .base.maxver = 0,
  96         .ctor = nv10_fifo_dma_new,
  97 };