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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 "priv.h"
#include <core/gpuobj.h>
#include <subdev/fb.h>
#include <subdev/mmu/nv04.h>
#include <nvif/class.h>
struct nv04_dmaobj_priv {
struct nvkm_dmaobj base;
bool clone;
u32 flags0;
u32 flags2;
};
static int
nv04_dmaobj_bind(struct nvkm_dmaobj *dmaobj, struct nvkm_object *parent,
struct nvkm_gpuobj **pgpuobj)
{
struct nv04_dmaobj_priv *priv = (void *)dmaobj;
struct nvkm_gpuobj *gpuobj;
u64 offset = priv->base.start & 0xfffff000;
u64 adjust = priv->base.start & 0x00000fff;
u32 length = priv->base.limit - priv->base.start;
int ret;
if (!nv_iclass(parent, NV_ENGCTX_CLASS)) {
switch (nv_mclass(parent->parent)) {
case NV03_CHANNEL_DMA:
case NV10_CHANNEL_DMA:
case NV17_CHANNEL_DMA:
case NV40_CHANNEL_DMA:
break;
default:
return -EINVAL;
}
}
if (priv->clone) {
struct nv04_mmu_priv *mmu = nv04_mmu(dmaobj);
struct nvkm_gpuobj *pgt = mmu->vm->pgt[0].obj[0];
if (!dmaobj->start)
return nvkm_gpuobj_dup(parent, pgt, pgpuobj);
offset = nv_ro32(pgt, 8 + (offset >> 10));
offset &= 0xfffff000;
}
ret = nvkm_gpuobj_new(parent, parent, 16, 16, 0, &gpuobj);
*pgpuobj = gpuobj;
if (ret == 0) {
nv_wo32(*pgpuobj, 0x00, priv->flags0 | (adjust << 20));
nv_wo32(*pgpuobj, 0x04, length);
nv_wo32(*pgpuobj, 0x08, priv->flags2 | offset);
nv_wo32(*pgpuobj, 0x0c, priv->flags2 | offset);
}
return ret;
}
static int
nv04_dmaobj_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
struct nvkm_oclass *oclass, void *data, u32 size,
struct nvkm_object **pobject)
{
struct nvkm_dmaeng *dmaeng = (void *)engine;
struct nv04_mmu_priv *mmu = nv04_mmu(engine);
struct nv04_dmaobj_priv *priv;
int ret;
ret = nvkm_dmaobj_create(parent, engine, oclass, &data, &size, &priv);
*pobject = nv_object(priv);
if (ret || (ret = -ENOSYS, size))
return ret;
if (priv->base.target == NV_MEM_TARGET_VM) {
if (nv_object(mmu)->oclass == &nv04_mmu_oclass)
priv->clone = true;
priv->base.target = NV_MEM_TARGET_PCI;
priv->base.access = NV_MEM_ACCESS_RW;
}
priv->flags0 = nv_mclass(priv);
switch (priv->base.target) {
case NV_MEM_TARGET_VRAM:
priv->flags0 |= 0x00003000;
break;
case NV_MEM_TARGET_PCI:
priv->flags0 |= 0x00023000;
break;
case NV_MEM_TARGET_PCI_NOSNOOP:
priv->flags0 |= 0x00033000;
break;
default:
return -EINVAL;
}
switch (priv->base.access) {
case NV_MEM_ACCESS_RO:
priv->flags0 |= 0x00004000;
break;
case NV_MEM_ACCESS_WO:
priv->flags0 |= 0x00008000;
case NV_MEM_ACCESS_RW:
priv->flags2 |= 0x00000002;
break;
default:
return -EINVAL;
}
return dmaeng->bind(&priv->base, nv_object(priv), (void *)pobject);
}
static struct nvkm_ofuncs
nv04_dmaobj_ofuncs = {
.ctor = nv04_dmaobj_ctor,
.dtor = _nvkm_dmaobj_dtor,
.init = _nvkm_dmaobj_init,
.fini = _nvkm_dmaobj_fini,
};
static struct nvkm_oclass
nv04_dmaeng_sclass[] = {
{ NV_DMA_FROM_MEMORY, &nv04_dmaobj_ofuncs },
{ NV_DMA_TO_MEMORY, &nv04_dmaobj_ofuncs },
{ NV_DMA_IN_MEMORY, &nv04_dmaobj_ofuncs },
{}
};
struct nvkm_oclass *
nv04_dmaeng_oclass = &(struct nvkm_dmaeng_impl) {
.base.handle = NV_ENGINE(DMAOBJ, 0x04),
.base.ofuncs = &(struct nvkm_ofuncs) {
.ctor = _nvkm_dmaeng_ctor,
.dtor = _nvkm_dmaeng_dtor,
.init = _nvkm_dmaeng_init,
.fini = _nvkm_dmaeng_fini,
},
.sclass = nv04_dmaeng_sclass,
.bind = nv04_dmaobj_bind,
}.base;
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