LXR linux/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
  35static int
  36nv10_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_DMA),
  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
  91const struct nvkm_fifo_chan_oclass
  92nv10_fifo_dma_oclass = {
  93        .base.oclass = NV10_CHANNEL_DMA,
  94        .base.minver = 0,
  95        .base.maxver = 0,
  96        .ctor = nv10_fifo_dma_new,
  97};
  98