drm_ioctl.c revision 60405de4d8688d96dd05157c28db3ade5c9bc234
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* drm_ioctl.h -- IOCTL processing for DRM -*- linux-c -*-
* Created: Fri Jan 8 09:01:26 1999 by faith@valinux.com
*/
/*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
* All Rights Reserved.
*
* 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 (including the next
* paragraph) 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
* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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:
* Rickard E. (Rik) Faith <faith@valinux.com>
* Gareth Hughes <gareth@valinux.com>
*
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include "drmP.h"
/*
* Beginning in revision 1.1 of the DRM interface, getunique will return
* a unique in the form pci:oooo:bb:dd.f (o=domain, b=bus, d=device, f=function)
* before setunique has been called. The format for the bus-specific part of
* the unique is not defined for any other bus.
*/
/*ARGSUSED*/
int
drm_getunique(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
drm_unique_t u1;
if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
drm_unique32_t u32;
DRM_COPY_FROM_USER_IOCTL(u32,
(drm_unique32_t *)data,
sizeof (drm_unique32_t));
u1.unique_len = u32.unique_len;
u1.unique = (char __user *)(uintptr_t)u32.unique;
} else
DRM_COPY_FROM_USER_IOCTL(
u1, (drm_unique_t *)data, sizeof (u1));
if (u1.unique_len >= dev->unique_len) {
if (dev->unique_len == 0) {
DRM_ERROR("drm_getunique: dev->unique_len = 0");
return (DRM_ERR(EFAULT));
}
if (DRM_COPY_TO_USER(u1.unique, dev->unique, dev->unique_len))
return (DRM_ERR(EFAULT));
}
u1.unique_len = dev->unique_len;
if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
drm_unique32_t u32;
u32.unique_len = u1.unique_len;
u32.unique = (caddr32_t)(uintptr_t)u1.unique;
DRM_COPY_TO_USER_IOCTL((drm_unique32_t *)data, u32,
sizeof (drm_unique32_t));
} else
DRM_COPY_TO_USER_IOCTL((drm_unique_t *)data, u1, sizeof (u1));
return (0);
}
/*
* Deprecated in DRM version 1.1, and will return EBUSY when setversion has
* requested version 1.1 or greater.
*/
/*ARGSUSED*/
int
drm_setunique(DRM_IOCTL_ARGS)
{
return (DRM_ERR(EINVAL));
}
static int
drm_set_busid(drm_device_t *dev)
{
DRM_LOCK();
if (dev->unique != NULL) {
DRM_UNLOCK();
return (DRM_ERR(EBUSY));
}
dev->unique_len = 20;
dev->unique = drm_alloc(dev->unique_len + 1, DRM_MEM_DRIVER);
if (dev->unique == NULL) {
DRM_UNLOCK();
return (DRM_ERR(ENOMEM));
}
(void) snprintf(dev->unique, dev->unique_len, "pci:%04x:%02x:%02x.%1x",
dev->pci_domain, dev->pci_bus, dev->pci_slot, dev->pci_func);
DRM_UNLOCK();
return (0);
}
/*ARGSUSED*/
int
drm_getmap(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
drm_map_t map;
drm_local_map_t *mapinlist;
int idx;
int i = 0;
if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
drm_map32_t map32;
DRM_COPY_FROM_USER_IOCTL(map32,
(drm_map32_t *)data,
sizeof (drm_map32_t));
map.offset = map32.offset;
map.size = map32.size;
map.type = map32.type;
map.flags = map32.flags;
map.handle = map32.handle;
map.mtrr = map32.mtrr;
} else
DRM_COPY_FROM_USER_IOCTL(map, (drm_map_t *)data, sizeof (map));
idx = map.offset;
DRM_LOCK();
if (idx < 0) {
DRM_UNLOCK();
return (DRM_ERR(EINVAL));
}
TAILQ_FOREACH(mapinlist, &dev->maplist, link) {
if (i == idx) {
map.offset = mapinlist->offset.off;
map.size = mapinlist->size;
map.type = mapinlist->type;
map.flags = mapinlist->flags;
map.handle = (unsigned long long)(uintptr_t)
mapinlist->handle;
map.mtrr = mapinlist->mtrr;
break;
}
i++;
}
DRM_UNLOCK();
if (mapinlist == NULL)
return (DRM_ERR(EINVAL));
if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
drm_map32_t map32;
map32.offset = map.offset;
map32.size = map.size;
map32.type = map.type;
map32.flags = map.flags;
map32.handle = map.handle;
map32.mtrr = map.mtrr;
DRM_COPY_TO_USER_IOCTL((drm_map32_t *)data, map32,
sizeof (drm_map32_t));
} else
DRM_COPY_TO_USER_IOCTL((drm_map_t *)data, map, sizeof (map));
return (0);
}
/*ARGSUSED*/
int
drm_getclient(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
drm_client_t client;
drm_file_t *pt;
int idx;
int i = 0;
if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
drm_client32_t client32;
DRM_COPY_FROM_USER_IOCTL(client32,
(drm_client32_t *)data,
sizeof (drm_client32_t));
client.idx = client32.idx;
client.auth = client32.auth;
client.pid = client32.pid;
client.uid = client32.uid;
client.magic = client32.magic;
client.iocs = client32.iocs;
} else
DRM_COPY_FROM_USER_IOCTL(
client, (drm_client_t *)data, sizeof (client));
idx = client.idx;
DRM_LOCK();
TAILQ_FOREACH(pt, &dev->files, link) {
if (i == idx) {
client.auth = pt->authenticated;
client.pid = pt->pid;
client.uid = pt->uid;
client.magic = pt->magic;
client.iocs = pt->ioctl_count;
DRM_UNLOCK();
if (ddi_model_convert_from(mode & FMODELS) ==
DDI_MODEL_ILP32) {
drm_client32_t client32;
client32.idx = client.idx;
client32.auth = client.auth;
client32.pid = client.pid;
client32.uid = client.uid;
client32.magic = client.magic;
client32.iocs = client.iocs;
DRM_COPY_TO_USER_IOCTL((drm_client32_t *)data,
client32,
sizeof (drm_client32_t));
} else
DRM_COPY_TO_USER_IOCTL((drm_client_t *)data,
client, sizeof (client));
return (0);
}
i++;
}
DRM_UNLOCK();
return (DRM_ERR(EINVAL));
}
/*ARGSUSED*/
int
drm_getstats(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
drm_stats_t stats;
int i;
bzero(&stats, sizeof (stats));
DRM_LOCK();
for (i = 0; i < dev->counters; i++) {
if (dev->types[i] == _DRM_STAT_LOCK) {
stats.data[i].value
= (dev->lock.hw_lock
? dev->lock.hw_lock->lock : 0);
} else
stats.data[i].value = atomic_read(&dev->counts[i]);
stats.data[i].type = dev->types[i];
}
stats.count = dev->counters;
DRM_UNLOCK();
if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
drm_stats32_t stats32;
stats32.count = stats.count;
for (i = 0; i < 15; i++) {
stats32.data[i].value = stats.data[i].value;
stats32.data[i].type = stats.data[i].type;
}
DRM_COPY_TO_USER_IOCTL((drm_stats32_t *)data, stats32,
sizeof (drm_stats32_t));
} else
DRM_COPY_TO_USER_IOCTL(
(drm_stats_t *)data, stats, sizeof (stats));
return (0);
}
#define DRM_IF_MAJOR 1
#define DRM_IF_MINOR 2
/*ARGSUSED*/
int
drm_setversion(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
drm_set_version_t sv;
drm_set_version_t retv;
int if_version;
DRM_COPY_FROM_USER_IOCTL(sv, (drm_set_version_t *)data, sizeof (sv));
retv.drm_di_major = DRM_IF_MAJOR;
retv.drm_di_minor = DRM_IF_MINOR;
retv.drm_dd_major = dev->driver_major;
retv.drm_dd_minor = dev->driver_minor;
DRM_COPY_TO_USER_IOCTL((drm_set_version_t *)data, retv, sizeof (sv));
if (sv.drm_di_major != -1) {
if (sv.drm_di_major != DRM_IF_MAJOR ||
sv.drm_di_minor < 0 || sv.drm_di_minor > DRM_IF_MINOR)
return (DRM_ERR(EINVAL));
if_version = DRM_IF_VERSION(sv.drm_di_major, sv.drm_dd_minor);
dev->if_version = DRM_MAX(if_version, dev->if_version);
if (sv.drm_di_minor >= 1) {
/*
* Version 1.1 includes tying of DRM to specific device
*/
(void) drm_set_busid(dev);
}
}
if (sv.drm_dd_major != -1) {
if (sv.drm_dd_major != dev->driver_major ||
sv.drm_dd_minor < 0 || sv.drm_dd_minor > dev->driver_minor)
return (DRM_ERR(EINVAL));
}
return (0);
}
/*ARGSUSED*/
int
drm_noop(DRM_IOCTL_ARGS)
{
DRM_DEBUG("drm_noop\n");
return (0);
}
/*ARGSUSED*/
int
drm_version(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
drm_version_t version;
int len;
if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
drm_version32_t version32;
DRM_COPY_FROM_USER_IOCTL(version32,
(drm_version32_t *)data,
sizeof (drm_version32_t));
version.version_major = version32.version_major;
version.version_minor = version32.version_minor;
version.version_patchlevel = version32.version_patchlevel;
version.name_len = version32.name_len;
version.name = (char __user *)(uintptr_t)version32.name;
version.date_len = version32.date_len;
version.date = (char __user *)(uintptr_t)version32.date;
version.desc_len = version32.desc_len;
version.desc = (char __user *)(uintptr_t)version32.desc;
} else
DRM_COPY_FROM_USER_IOCTL(
version, (drm_version_t *)data, sizeof (version));
#define DRM_COPY(name, value) \
len = strlen(value); \
if (len > name##_len) len = name##_len; \
name##_len = strlen(value); \
if (len && name) { \
if (DRM_COPY_TO_USER(name, value, len)) \
return (DRM_ERR(EFAULT)); \
}
version.version_major = dev->driver_major;
version.version_minor = dev->driver_minor;
version.version_patchlevel = dev->driver_patchlevel;
DRM_COPY(version.name, dev->driver_name);
DRM_COPY(version.date, dev->driver_date);
DRM_COPY(version.desc, dev->driver_desc);
if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
drm_version32_t version32;
version32.version_major = version.version_major;
version32.version_minor = version.version_minor;
version32.version_patchlevel = version.version_patchlevel;
version32.name_len = version.name_len;
version32.name = (caddr32_t)(uintptr_t)version.name;
version32.date_len = version.date_len;
version32.date = (caddr32_t)(uintptr_t)version.date;
version32.desc_len = version.desc_len;
version32.desc = (caddr32_t)(uintptr_t)version.desc;
DRM_COPY_TO_USER_IOCTL((drm_version32_t *)data, version32,
sizeof (drm_version32_t));
} else
DRM_COPY_TO_USER_IOCTL(
(drm_version_t *)data, version, sizeof (version));
return (0);
}