root/drivers/gpu/drm/nouveau/nvkm/engine/dma/usergv100.c

DEFINITIONS

1. gv100_dmaobj_bind
2. gv100_dmaobj_new

   1 /*
   2  * Copyright 2018 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 #define gv100_dmaobj(p) container_of((p), struct gv100_dmaobj, base)
  23 #include "user.h"
  24 
  25 #include <core/client.h>
  26 #include <core/gpuobj.h>
  27 #include <subdev/fb.h>
  28 
  29 #include <nvif/cl0002.h>
  30 #include <nvif/unpack.h>
  31 
  32 struct gv100_dmaobj {
  33         struct nvkm_dmaobj base;
  34         u32 flags0;
  35 };
  36 
  37 static int
  38 gv100_dmaobj_bind(struct nvkm_dmaobj *base, struct nvkm_gpuobj *parent,
  39                   int align, struct nvkm_gpuobj **pgpuobj)
  40 {
  41         struct gv100_dmaobj *dmaobj = gv100_dmaobj(base);
  42         struct nvkm_device *device = dmaobj->base.dma->engine.subdev.device;
  43         u64 start = dmaobj->base.start >> 8;
  44         u64 limit = dmaobj->base.limit >> 8;
  45         int ret;
  46 
  47         ret = nvkm_gpuobj_new(device, 24, align, false, parent, pgpuobj);
  48         if (ret == 0) {
  49                 nvkm_kmap(*pgpuobj);
  50                 nvkm_wo32(*pgpuobj, 0x00, dmaobj->flags0);
  51                 nvkm_wo32(*pgpuobj, 0x04, lower_32_bits(start));
  52                 nvkm_wo32(*pgpuobj, 0x08, upper_32_bits(start));
  53                 nvkm_wo32(*pgpuobj, 0x0c, lower_32_bits(limit));
  54                 nvkm_wo32(*pgpuobj, 0x10, upper_32_bits(limit));
  55                 nvkm_done(*pgpuobj);
  56         }
  57 
  58         return ret;
  59 }
  60 
  61 static const struct nvkm_dmaobj_func
  62 gv100_dmaobj_func = {
  63         .bind = gv100_dmaobj_bind,
  64 };
  65 
  66 int
  67 gv100_dmaobj_new(struct nvkm_dma *dma, const struct nvkm_oclass *oclass,
  68                  void *data, u32 size, struct nvkm_dmaobj **pdmaobj)
  69 {
  70         union {
  71                 struct gf119_dma_v0 v0;
  72         } *args;
  73         struct nvkm_object *parent = oclass->parent;
  74         struct gv100_dmaobj *dmaobj;
  75         u32 kind, page;
  76         int ret;
  77 
  78         if (!(dmaobj = kzalloc(sizeof(*dmaobj), GFP_KERNEL)))
  79                 return -ENOMEM;
  80         *pdmaobj = &dmaobj->base;
  81 
  82         ret = nvkm_dmaobj_ctor(&gv100_dmaobj_func, dma, oclass,
  83                                &data, &size, &dmaobj->base);
  84         if (ret)
  85                 return ret;
  86 
  87         ret  = -ENOSYS;
  88         args = data;
  89 
  90         nvif_ioctl(parent, "create gv100 dma size %d\n", size);
  91         if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
  92                 nvif_ioctl(parent,
  93                            "create gv100 dma vers %d page %d kind %02x\n",
  94                            args->v0.version, args->v0.page, args->v0.kind);
  95                 kind = args->v0.kind != 0;
  96                 page = args->v0.page != 0;
  97         } else
  98         if (size == 0) {
  99                 kind = 0;
 100                 page = GF119_DMA_V0_PAGE_SP;
 101         } else
 102                 return ret;
 103 
 104         if (kind)
 105                 dmaobj->flags0 |= 0x00100000;
 106         if (page)
 107                 dmaobj->flags0 |= 0x00000040;
 108         dmaobj->flags0 |= 0x00000004; /* rw */
 109 
 110         switch (dmaobj->base.target) {
 111         case NV_MEM_TARGET_VRAM       : dmaobj->flags0 |= 0x00000001; break;
 112         case NV_MEM_TARGET_PCI        : dmaobj->flags0 |= 0x00000002; break;
 113         case NV_MEM_TARGET_PCI_NOSNOOP: dmaobj->flags0 |= 0x00000003; break;
 114         default:
 115                 return -EINVAL;
 116         }
 117 
 118         return 0;
 119 }