/*
* Copyright 2014 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 <[email protected]>
*/
#include <core/ioctl.h>
#include <core/client.h>
#include <core/engine.h>
#include <core/event.h>
#include <nvif/unpack.h>
#include <nvif/ioctl.h>
static int
nvkm_ioctl_nop(struct nvkm_client *client,
struct nvkm_object *object, void *data, u32 size)
{
return -ENOSYS;
}
#include <nvif/class.h>
static int
nvkm_ioctl_sclass_(struct nvkm_object *object, int index, struct nvkm_oclass *oclass)
{
if ( object->func->uevent &&
!object->func->uevent(object, NULL, 0, NULL) && index-- == 0) {
oclass->ctor = nvkm_uevent_new;
oclass->base.minver = 0;
oclass->base.maxver = 0;
oclass->base.oclass = NVIF_CLASS_EVENT;
return 0;
}
if (object->func->sclass)
return object->func->sclass(object, index, oclass);
return -ENOSYS;
}
static int
nvkm_ioctl_sclass(struct nvkm_client *client,
struct nvkm_object *object, void *data, u32 size)
{
union {
struct nvif_ioctl_sclass_v0 v0;
} *args = data;
struct nvkm_oclass oclass = { .client = client };
int ret = -ENOSYS, i = 0;
nvif_ioctl(object, "sclass size %d\n", size);
if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
nvif_ioctl(object, "sclass vers %d count %d\n",
args->v0.version, args->v0.count);
if (size != args->v0.count * sizeof(args->v0.oclass[0]))
return -EINVAL;
while (nvkm_ioctl_sclass_(object, i, &oclass) >= 0) {
if (i < args->v0.count) {
args->v0.oclass[i].oclass = oclass.base.oclass;
args->v0.oclass[i].minver = oclass.base.minver;
args->v0.oclass[i].maxver = oclass.base.maxver;
}
i++;
}
args->v0.count = i;
}
return ret;
}
static int
nvkm_ioctl_new(struct nvkm_client *client,
struct nvkm_object *parent, void *data, u32 size)
{
union {
struct nvif_ioctl_new_v0 v0;
} *args = data;
struct nvkm_object *object = NULL;
struct nvkm_oclass oclass;
int ret = -ENOSYS, i = 0;
nvif_ioctl(parent, "new size %d\n", size);
if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
nvif_ioctl(parent, "new vers %d handle %08x class %08x object %016llx\n",
args->v0.version, args->v0.handle, args->v0.oclass,
args->v0.object);
} else
return ret;
if (!parent->func->sclass && !parent->func->uevent) {
nvif_ioctl(parent, "cannot have children\n");
return -EINVAL;
}
do {
memset(&oclass, 0x00, sizeof(oclass));
oclass.handle = args->v0.handle;
oclass.object = args->v0.object;
oclass.client = client;
oclass.parent = parent;
ret = nvkm_ioctl_sclass_(parent, i++, &oclass);
if (ret)
return ret;
} while (oclass.base.oclass != args->v0.oclass);
if (oclass.engine) {
oclass.engine = nvkm_engine_ref(oclass.engine);
if (IS_ERR(oclass.engine))
return PTR_ERR(oclass.engine);
}
ret = oclass.ctor(&oclass, data, size, &object);
nvkm_engine_unref(&oclass.engine);
if (ret == 0) {
ret = nvkm_object_init(object);
if (ret == 0) {
list_add_tail(&object->head, &parent->tree);
if (nvkm_object_insert(object)) {
client->data = object;
return 0;
}
ret = -EEXIST;
}
nvkm_object_fini(object, false);
}
nvkm_object_del(&object);
return ret;
}
static int
nvkm_ioctl_del(struct nvkm_client *client,
struct nvkm_object *object, void *data, u32 size)
{
union {
struct nvif_ioctl_del none;
} *args = data;
int ret = -ENOSYS;
nvif_ioctl(object, "delete size %d\n", size);
if (!(ret = nvif_unvers(ret, &data, &size, args->none))) {
nvif_ioctl(object, "delete\n");
nvkm_object_fini(object, false);
nvkm_object_del(&object);
}
return ret ? ret : 1;
}
static int
nvkm_ioctl_mthd(struct nvkm_client *client,
struct nvkm_object *object, void *data, u32 size)
{
union {
struct nvif_ioctl_mthd_v0 v0;
} *args = data;
int ret = -ENOSYS;
nvif_ioctl(object, "mthd size %d\n", size);
if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
nvif_ioctl(object, "mthd vers %d mthd %02x\n",
args->v0.version, args->v0.method);
ret = nvkm_object_mthd(object, args->v0.method, data, size);
}
return ret;
}
static int
nvkm_ioctl_rd(struct nvkm_client *client,
struct nvkm_object *object, void *data, u32 size)
{
return -ENOSYS;
}
static int
nvkm_ioctl_wr(struct nvkm_client *client,
struct nvkm_object *object, void *data, u32 size)
{
return -ENOSYS;
}
static int
nvkm_ioctl_map(struct nvkm_client *client,
struct nvkm_object *object, void *data, u32 size)
{
union {
struct nvif_ioctl_map_v0 v0;
} *args = data;
enum nvkm_object_map type;
int ret = -ENOSYS;
nvif_ioctl(object, "map size %d\n", size);
if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
nvif_ioctl(object, "map vers %d\n", args->v0.version);
ret = nvkm_object_map(object, data, size, &type,
&args->v0.handle,
&args->v0.length);
if (type == NVKM_OBJECT_MAP_IO)
args->v0.type = NVIF_IOCTL_MAP_V0_IO;
else
args->v0.type = NVIF_IOCTL_MAP_V0_VA;
}
return ret;
}
static int
nvkm_ioctl_unmap(struct nvkm_client *client,
struct nvkm_object *object, void *data, u32 size)
{
union {
struct nvif_ioctl_unmap none;
} *args = data;
int ret = -ENOSYS;
nvif_ioctl(object, "unmap size %d\n", size);
if (!(ret = nvif_unvers(ret, &data, &size, args->none))) {
nvif_ioctl(object, "unmap\n");
ret = nvkm_object_unmap(object);
}
return ret;
}
static struct {
int version;
int (*func)(struct nvkm_client *, struct nvkm_object *, void *, u32);
}
nvkm_ioctl_v0[] = {
{ 0x00, nvkm_ioctl_nop },
{ 0x00, nvkm_ioctl_sclass },
{ 0x00, nvkm_ioctl_new },
{ 0x00, nvkm_ioctl_del },
{ 0x00, nvkm_ioctl_mthd },
{ 0x00, nvkm_ioctl_rd },
{ 0x00, nvkm_ioctl_wr },
{ 0x00, nvkm_ioctl_map },
{ 0x00, nvkm_ioctl_unmap },
};
static int
nvkm_ioctl_path(struct nvkm_client *client, u64 handle, u32 type,
void *data, u32 size)
{
struct nvkm_object *object;
int ret;
object = nvkm_object_search(client, handle, NULL);
if (IS_ERR(object)) {
nvif_ioctl(&client->object, "object not found\n");
return PTR_ERR(object);
}
if (ret = -EINVAL, type < ARRAY_SIZE(nvkm_ioctl_v0)) {
if (nvkm_ioctl_v0[type].version == 0)
ret = nvkm_ioctl_v0[type].func(client, object, data, size);
}
return ret;
}
int
nvkm_ioctl(struct nvkm_client *client, void *data, u32 size, void **hack)
{
struct nvkm_object *object = &client->object;
union {
struct nvif_ioctl_v0 v0;
} *args = data;
int ret = -ENOSYS;
nvif_ioctl(object, "size %d\n", size);
if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
nvif_ioctl(object,
"vers %d type %02x object %016llx owner %02x\n",
args->v0.version, args->v0.type, args->v0.object,
args->v0.owner);
ret = nvkm_ioctl_path(client, args->v0.object, args->v0.type,
data, size);
}
if (ret != 1) {
nvif_ioctl(object, "return %d\n", ret);
if (hack) {
*hack = client->data;
client->data = NULL;
}
}
return ret;
}
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