user.c

  1/*
  2 * Copyright 2012 Red Hat Inc.
  3 *
  4 * Permission is hereby granted, free of charge, to any person obtaining a
  5 * copy of this software and associated documentation files (the "Software"),
  6 * to deal in the Software without restriction, including without limitation
  7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  8 * and/or sell copies of the Software, and to permit persons to whom the
  9 * Software is furnished to do so, subject to the following conditions:
 10 *
 11 * The above copyright notice and this permission notice shall be included in
 12 * all copies or substantial portions of the Software.
 13 *
 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 20 * OTHER DEALINGS IN THE SOFTWARE.
 21 *
 22 * Authors: Ben Skeggs
 23 */
 24#include "user.h"
 25
 26#include <core/client.h>
 27#include <core/gpuobj.h>
 28#include <subdev/fb.h>
 29
 30#include <nvif/cl0002.h>
 31#include <nvif/unpack.h>
 32
 33static const struct nvkm_object_func nvkm_dmaobj_func;
 34struct nvkm_dmaobj *
 35nvkm_dmaobj_search(struct nvkm_client *client, u64 handle)
 36{
 37	struct nvkm_object *object;
 38
 39	object = nvkm_object_search(client, handle, &nvkm_dmaobj_func);
 40	if (IS_ERR(object))
 41		return (void *)object;
 42
 43	return nvkm_dmaobj(object);
 44}
 45
 46static int
 47nvkm_dmaobj_bind(struct nvkm_object *base, struct nvkm_gpuobj *gpuobj,
 48		 int align, struct nvkm_gpuobj **pgpuobj)
 49{
 50	struct nvkm_dmaobj *dmaobj = nvkm_dmaobj(base);
 51	return dmaobj->func->bind(dmaobj, gpuobj, align, pgpuobj);
 52}
 53
 54static void *
 55nvkm_dmaobj_dtor(struct nvkm_object *base)
 56{
 57	return nvkm_dmaobj(base);
 58}
 59
 60static const struct nvkm_object_func
 61nvkm_dmaobj_func = {
 62	.dtor = nvkm_dmaobj_dtor,
 63	.bind = nvkm_dmaobj_bind,
 64};
 65
 66int
 67nvkm_dmaobj_ctor(const struct nvkm_dmaobj_func *func, struct nvkm_dma *dma,
 68		 const struct nvkm_oclass *oclass, void **pdata, u32 *psize,
 69		 struct nvkm_dmaobj *dmaobj)
 70{
 71	union {
 72		struct nv_dma_v0 v0;
 73	} *args = *pdata;
 74	struct nvkm_object *parent = oclass->parent;
 75	void *data = *pdata;
 76	u32 size = *psize;
 77	int ret = -ENOSYS;
 78
 79	nvkm_object_ctor(&nvkm_dmaobj_func, oclass, &dmaobj->object);
 80	dmaobj->func = func;
 81	dmaobj->dma = dma;
 82
 83	nvif_ioctl(parent, "create dma size %d\n", *psize);
 84	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
 85		nvif_ioctl(parent, "create dma vers %d target %d access %d "
 86				   "start %016llx limit %016llx\n",
 87			   args->v0.version, args->v0.target, args->v0.access,
 88			   args->v0.start, args->v0.limit);
 89		dmaobj->target = args->v0.target;
 90		dmaobj->access = args->v0.access;
 91		dmaobj->start  = args->v0.start;
 92		dmaobj->limit  = args->v0.limit;
 93	} else
 94		return ret;
 95
 96	*pdata = data;
 97	*psize = size;
 98
 99	if (dmaobj->start > dmaobj->limit)
100		return -EINVAL;
101
102	switch (dmaobj->target) {
103	case NV_DMA_V0_TARGET_VM:
104		dmaobj->target = NV_MEM_TARGET_VM;
105		break;
106	case NV_DMA_V0_TARGET_VRAM:
107		dmaobj->target = NV_MEM_TARGET_VRAM;
108		break;
109	case NV_DMA_V0_TARGET_PCI:
110		dmaobj->target = NV_MEM_TARGET_PCI;
111		break;
112	case NV_DMA_V0_TARGET_PCI_US:
113	case NV_DMA_V0_TARGET_AGP:
114		dmaobj->target = NV_MEM_TARGET_PCI_NOSNOOP;
115		break;
116	default:
117		return -EINVAL;
118	}
119
120	switch (dmaobj->access) {
121	case NV_DMA_V0_ACCESS_VM:
122		dmaobj->access = NV_MEM_ACCESS_VM;
123		break;
124	case NV_DMA_V0_ACCESS_RD:
125		dmaobj->access = NV_MEM_ACCESS_RO;
126		break;
127	case NV_DMA_V0_ACCESS_WR:
128		dmaobj->access = NV_MEM_ACCESS_WO;
129		break;
130	case NV_DMA_V0_ACCESS_RDWR:
131		dmaobj->access = NV_MEM_ACCESS_RW;
132		break;
133	default:
134		return -EINVAL;
135	}
136
137	return ret;
138}