/*
* 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
*/
#define nv04_dmaobj(p) container_of((p), struct nv04_dmaobj, base)
#include "user.h"
#include <core/gpuobj.h>
#include <subdev/fb.h>
#include <subdev/mmu/vmm.h>
#include <nvif/class .h>
struct nv04_dmaobj {
struct nvkm_dmaobj base;
bool clone;
u32 flags0;
u32 flags2;
};
static int
nv04_dmaobj_bind(struct nvkm_dmaobj *base, struct nvkm_gpuobj *parent,
int align, struct nvkm_gpuobj **pgpuobj)
{
struct nv04_dmaobj *dmaobj = nv04_dmaobj(base);
struct nvkm_device *device = dmaobj->base.dma->engine.subdev.device;
u64 offset = dmaobj->base.start & 0 xfffff000;
u64 adjust = dmaobj->base.start & 0 x00000fff;
u32 length = dmaobj->base.limit - dmaobj->base.start;
int ret;
if (dmaobj->clone) {
struct nvkm_memory *pgt =
device->mmu->vmm->pd->pt[0 ]->memory;
if (!dmaobj->base.start)
return nvkm_gpuobj_wrap(pgt, pgpuobj);
nvkm_kmap(pgt);
offset = nvkm_ro32(pgt, 8 + (offset >> 10 ));
offset &= 0 xfffff000;
nvkm_done(pgt);
}
ret = nvkm_gpuobj_new(device, 16 , align, false , parent, pgpuobj);
if (ret == 0 ) {
nvkm_kmap(*pgpuobj);
nvkm_wo32(*pgpuobj, 0 x00, dmaobj->flags0 | (adjust << 20 ));
nvkm_wo32(*pgpuobj, 0 x04, length);
nvkm_wo32(*pgpuobj, 0 x08, dmaobj->flags2 | offset);
nvkm_wo32(*pgpuobj, 0 x0c, dmaobj->flags2 | offset);
nvkm_done(*pgpuobj);
}
return ret;
}
static const struct nvkm_dmaobj_func
nv04_dmaobj_func = {
.bind = nv04_dmaobj_bind,
};
int
nv04_dmaobj_new(struct nvkm_dma *dma, const struct nvkm_oclass *oclass,
void *data, u32 size, struct nvkm_dmaobj **pdmaobj)
{
struct nvkm_device *device = dma->engine.subdev.device;
struct nv04_dmaobj *dmaobj;
int ret;
if (!(dmaobj = kzalloc(sizeof (*dmaobj), GFP_KERNEL)))
return -ENOMEM;
*pdmaobj = &dmaobj->base;
ret = nvkm_dmaobj_ctor(&nv04_dmaobj_func, dma, oclass,
&data, &size, &dmaobj->base);
if (ret)
return ret;
if (dmaobj->base.target == NV_MEM_TARGET_VM) {
if (device->mmu->func == &nv04_mmu)
dmaobj->clone = true ;
dmaobj->base.target = NV_MEM_TARGET_PCI;
dmaobj->base.access = NV_MEM_ACCESS_RW;
}
dmaobj->flags0 = oclass->base.oclass;
switch (dmaobj->base.target) {
case NV_MEM_TARGET_VRAM:
dmaobj->flags0 |= 0 x00003000;
break ;
case NV_MEM_TARGET_PCI:
dmaobj->flags0 |= 0 x00023000;
break ;
case NV_MEM_TARGET_PCI_NOSNOOP:
dmaobj->flags0 |= 0 x00033000;
break ;
default :
return -EINVAL;
}
switch (dmaobj->base.access) {
case NV_MEM_ACCESS_RO:
dmaobj->flags0 |= 0 x00004000;
break ;
case NV_MEM_ACCESS_WO:
dmaobj->flags0 |= 0 x00008000;
fallthrough;
case NV_MEM_ACCESS_RW:
dmaobj->flags2 |= 0 x00000002;
break ;
default :
return -EINVAL;
}
return 0 ;
}
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(vorverarbeitet am 2026-10-06)
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