154 lines
4.2 KiB
C
154 lines
4.2 KiB
C
/*
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* Copyright 2012 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs
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*/
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#include "user.h"
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#include <core/client.h>
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#include <core/gpuobj.h>
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#include <subdev/fb.h>
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#include <subdev/instmem.h>
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#include <nvif/cl0002.h>
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#include <nvif/unpack.h>
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static const struct nvkm_object_func nvkm_dmaobj_func;
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struct nvkm_dmaobj *
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nvkm_dmaobj_search(struct nvkm_client *client, u64 handle)
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{
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struct nvkm_object *object;
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object = nvkm_object_search(client, handle, &nvkm_dmaobj_func);
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if (IS_ERR(object))
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return (void *)object;
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return nvkm_dmaobj(object);
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}
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static int
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nvkm_dmaobj_bind(struct nvkm_object *base, struct nvkm_gpuobj *gpuobj,
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int align, struct nvkm_gpuobj **pgpuobj)
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{
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struct nvkm_dmaobj *dmaobj = nvkm_dmaobj(base);
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return dmaobj->func->bind(dmaobj, gpuobj, align, pgpuobj);
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}
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static void *
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nvkm_dmaobj_dtor(struct nvkm_object *base)
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{
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return nvkm_dmaobj(base);
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}
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static const struct nvkm_object_func
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nvkm_dmaobj_func = {
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.dtor = nvkm_dmaobj_dtor,
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.bind = nvkm_dmaobj_bind,
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};
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int
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nvkm_dmaobj_ctor(const struct nvkm_dmaobj_func *func, struct nvkm_dma *dma,
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const struct nvkm_oclass *oclass, void **pdata, u32 *psize,
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struct nvkm_dmaobj *dmaobj)
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{
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union {
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struct nv_dma_v0 v0;
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} *args = *pdata;
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struct nvkm_device *device = dma->engine.subdev.device;
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struct nvkm_client *client = oclass->client;
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struct nvkm_object *parent = oclass->parent;
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struct nvkm_instmem *instmem = device->imem;
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struct nvkm_fb *fb = device->fb;
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void *data = *pdata;
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u32 size = *psize;
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int ret = -ENOSYS;
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nvkm_object_ctor(&nvkm_dmaobj_func, oclass, &dmaobj->object);
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dmaobj->func = func;
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dmaobj->dma = dma;
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nvif_ioctl(parent, "create dma size %d\n", *psize);
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if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
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nvif_ioctl(parent, "create dma vers %d target %d access %d "
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"start %016llx limit %016llx\n",
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args->v0.version, args->v0.target, args->v0.access,
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args->v0.start, args->v0.limit);
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dmaobj->target = args->v0.target;
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dmaobj->access = args->v0.access;
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dmaobj->start = args->v0.start;
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dmaobj->limit = args->v0.limit;
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} else
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return ret;
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*pdata = data;
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*psize = size;
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if (dmaobj->start > dmaobj->limit)
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return -EINVAL;
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switch (dmaobj->target) {
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case NV_DMA_V0_TARGET_VM:
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dmaobj->target = NV_MEM_TARGET_VM;
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break;
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case NV_DMA_V0_TARGET_VRAM:
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if (!client->super) {
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if (dmaobj->limit >= fb->ram->size - instmem->reserved)
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return -EACCES;
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if (device->card_type >= NV_50)
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return -EACCES;
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}
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dmaobj->target = NV_MEM_TARGET_VRAM;
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break;
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case NV_DMA_V0_TARGET_PCI:
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if (!client->super)
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return -EACCES;
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dmaobj->target = NV_MEM_TARGET_PCI;
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break;
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case NV_DMA_V0_TARGET_PCI_US:
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case NV_DMA_V0_TARGET_AGP:
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if (!client->super)
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return -EACCES;
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dmaobj->target = NV_MEM_TARGET_PCI_NOSNOOP;
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break;
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default:
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return -EINVAL;
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}
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switch (dmaobj->access) {
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case NV_DMA_V0_ACCESS_VM:
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dmaobj->access = NV_MEM_ACCESS_VM;
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break;
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case NV_DMA_V0_ACCESS_RD:
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dmaobj->access = NV_MEM_ACCESS_RO;
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break;
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case NV_DMA_V0_ACCESS_WR:
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dmaobj->access = NV_MEM_ACCESS_WO;
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break;
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case NV_DMA_V0_ACCESS_RDWR:
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dmaobj->access = NV_MEM_ACCESS_RW;
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break;
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default:
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return -EINVAL;
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}
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return ret;
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}
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