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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 "user.h"
#include <core/client.h>
#include <core/gpuobj.h>
#include <subdev/fb.h>
#include <subdev/instmem.h>
#include <nvif/class.h>
#include <nvif/unpack.h>
static int
nvkm_dmaobj_bind(struct nvkm_object *base, struct nvkm_gpuobj *gpuobj,
int align, struct nvkm_gpuobj **pgpuobj)
{
struct nvkm_dmaobj *dmaobj = nvkm_dmaobj(base);
return dmaobj->func->bind(dmaobj, gpuobj, align, pgpuobj);
}
static void *
nvkm_dmaobj_dtor(struct nvkm_object *base)
{
struct nvkm_dmaobj *dmaobj = nvkm_dmaobj(base);
if (!RB_EMPTY_NODE(&dmaobj->rb))
rb_erase(&dmaobj->rb, &dmaobj->object.client->dmaroot);
return dmaobj;
}
static const struct nvkm_object_func
nvkm_dmaobj_func = {
.dtor = nvkm_dmaobj_dtor,
.bind = nvkm_dmaobj_bind,
};
int
nvkm_dmaobj_ctor(const struct nvkm_dmaobj_func *func, struct nvkm_dma *dma,
const struct nvkm_oclass *oclass, void **pdata, u32 *psize,
struct nvkm_dmaobj *dmaobj)
{
union {
struct nv_dma_v0 v0;
} *args = *pdata;
struct nvkm_device *device = dma->engine.subdev.device;
struct nvkm_client *client = oclass->client;
struct nvkm_object *parent = oclass->parent;
struct nvkm_instmem *instmem = device->imem;
struct nvkm_fb *fb = device->fb;
void *data = *pdata;
u32 size = *psize;
int ret;
nvkm_object_ctor(&nvkm_dmaobj_func, oclass, &dmaobj->object);
dmaobj->func = func;
dmaobj->dma = dma;
RB_CLEAR_NODE(&dmaobj->rb);
nvif_ioctl(parent, "create dma size %d\n", *psize);
if (nvif_unpack(args->v0, 0, 0, true)) {
nvif_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 >= fb->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;
}
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