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/*
* Copyright 2012 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Ben Skeggs
*/
#include <core/object.h>
#include <core/client.h>
#include <nvif/unpack.h>
#include <nvif/class.h>
#include <subdev/fb.h>
#include <subdev/instmem.h>
#include "priv.h"
static int
nvkm_dmaobj_bind(struct nouveau_dmaobj *dmaobj, struct nouveau_object *parent,
struct nouveau_gpuobj **pgpuobj)
{
const struct nvkm_dmaeng_impl *impl = (void *)
nv_oclass(nv_object(dmaobj)->engine);
int ret = 0;
if (nv_object(dmaobj) == parent) { /* ctor bind */
if (nv_mclass(parent->parent) == NV_DEVICE) {
/* delayed, or no, binding */
return 0;
}
ret = impl->bind(dmaobj, parent, pgpuobj);
if (ret == 0)
nouveau_object_ref(NULL, &parent);
return ret;
}
return impl->bind(dmaobj, parent, pgpuobj);
}
int
nvkm_dmaobj_create_(struct nouveau_object *parent,
struct nouveau_object *engine,
struct nouveau_oclass *oclass, void **pdata, u32 *psize,
int length, void **pobject)
{
union {
struct nv_dma_v0 v0;
} *args = *pdata;
struct nouveau_instmem *instmem = nouveau_instmem(parent);
struct nouveau_client *client = nouveau_client(parent);
struct nouveau_device *device = nv_device(parent);
struct nouveau_fb *pfb = nouveau_fb(parent);
struct nouveau_dmaobj *dmaobj;
void *data = *pdata;
u32 size = *psize;
int ret;
ret = nouveau_object_create_(parent, engine, oclass, 0, length, pobject);
dmaobj = *pobject;
if (ret)
return ret;
nv_ioctl(parent, "create dma size %d\n", *psize);
if (nvif_unpack(args->v0, 0, 0, true)) {
nv_ioctl(parent, "create dma vers %d target %d access %d "
"start %016llx limit %016llx\n",
args->v0.version, args->v0.target, args->v0.access,
args->v0.start, args->v0.limit);
dmaobj->target = args->v0.target;
dmaobj->access = args->v0.access;
dmaobj->start = args->v0.start;
dmaobj->limit = args->v0.limit;
} else
return ret;
*pdata = data;
*psize = size;
if (dmaobj->start > dmaobj->limit)
return -EINVAL;
switch (dmaobj->target) {
case NV_DMA_V0_TARGET_VM:
dmaobj->target = NV_MEM_TARGET_VM;
break;
case NV_DMA_V0_TARGET_VRAM:
if (!client->super) {
if (dmaobj->limit >= pfb->ram->size - instmem->reserved)
return -EACCES;
if (device->card_type >= NV_50)
return -EACCES;
}
dmaobj->target = NV_MEM_TARGET_VRAM;
break;
case NV_DMA_V0_TARGET_PCI:
if (!client->super)
return -EACCES;
dmaobj->target = NV_MEM_TARGET_PCI;
break;
case NV_DMA_V0_TARGET_PCI_US:
case NV_DMA_V0_TARGET_AGP:
if (!client->super)
return -EACCES;
dmaobj->target = NV_MEM_TARGET_PCI_NOSNOOP;
break;
default:
return -EINVAL;
}
switch (dmaobj->access) {
case NV_DMA_V0_ACCESS_VM:
dmaobj->access = NV_MEM_ACCESS_VM;
break;
case NV_DMA_V0_ACCESS_RD:
dmaobj->access = NV_MEM_ACCESS_RO;
break;
case NV_DMA_V0_ACCESS_WR:
dmaobj->access = NV_MEM_ACCESS_WO;
break;
case NV_DMA_V0_ACCESS_RDWR:
dmaobj->access = NV_MEM_ACCESS_RW;
break;
default:
return -EINVAL;
}
return ret;
}
int
_nvkm_dmaeng_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
struct nouveau_oclass *oclass, void *data, u32 size,
struct nouveau_object **pobject)
{
const struct nvkm_dmaeng_impl *impl = (void *)oclass;
struct nouveau_dmaeng *dmaeng;
int ret;
ret = nouveau_engine_create(parent, engine, oclass, true, "DMAOBJ",
"dmaobj", &dmaeng);
*pobject = nv_object(dmaeng);
if (ret)
return ret;
nv_engine(dmaeng)->sclass = impl->sclass;
dmaeng->bind = nvkm_dmaobj_bind;
return 0;
}
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