| /* 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> |
| * |
| */ |
| |
| #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. |
| */ |
| int drm_getunique(DRM_IOCTL_ARGS) |
| { |
| DRM_DEVICE; |
| drm_unique_t u; |
| |
| DRM_COPY_FROM_USER_IOCTL( u, (drm_unique_t *)data, sizeof(u) ); |
| |
| if (u.unique_len >= dev->unique_len) { |
| if (DRM_COPY_TO_USER(u.unique, dev->unique, dev->unique_len)) |
| return DRM_ERR(EFAULT); |
| } |
| u.unique_len = dev->unique_len; |
| |
| DRM_COPY_TO_USER_IOCTL( (drm_unique_t *)data, u, sizeof(u) ); |
| |
| return 0; |
| } |
| |
| /* Deprecated in DRM version 1.1, and will return EBUSY when setversion has |
| * requested version 1.1 or greater. |
| */ |
| int drm_setunique(DRM_IOCTL_ARGS) |
| { |
| DRM_DEVICE; |
| drm_unique_t u; |
| int domain, bus, slot, func, ret; |
| char *busid; |
| |
| DRM_COPY_FROM_USER_IOCTL( u, (drm_unique_t *)data, sizeof(u) ); |
| |
| /* Check and copy in the submitted Bus ID */ |
| if (!u.unique_len || u.unique_len > 1024) |
| return DRM_ERR(EINVAL); |
| |
| busid = malloc(u.unique_len + 1, M_DRM, M_WAITOK); |
| if (busid == NULL) |
| return DRM_ERR(ENOMEM); |
| |
| if (DRM_COPY_FROM_USER(busid, u.unique, u.unique_len)) { |
| free(busid, M_DRM); |
| return DRM_ERR(EFAULT); |
| } |
| busid[u.unique_len] = '\0'; |
| |
| /* Return error if the busid submitted doesn't match the device's actual |
| * busid. |
| */ |
| ret = sscanf(busid, "PCI:%d:%d:%d", &bus, &slot, &func); |
| if (ret != 3) { |
| free(busid, M_DRM); |
| return DRM_ERR(EINVAL); |
| } |
| domain = bus >> 8; |
| bus &= 0xff; |
| |
| if ((domain != dev->pci_domain) || |
| (bus != dev->pci_bus) || |
| (slot != dev->pci_slot) || |
| (func != dev->pci_func)) { |
| free(busid, M_DRM); |
| return DRM_ERR(EINVAL); |
| } |
| |
| /* Actually set the device's busid now. */ |
| DRM_LOCK(); |
| if (dev->unique_len || dev->unique) { |
| DRM_UNLOCK(); |
| return DRM_ERR(EBUSY); |
| } |
| |
| dev->unique_len = u.unique_len; |
| dev->unique = busid; |
| DRM_UNLOCK(); |
| |
| return 0; |
| } |
| |
| |
| static int |
| drm_set_busid(drm_device_t *dev) |
| { |
| |
| DRM_LOCK(); |
| |
| if (dev->unique != NULL) { |
| DRM_UNLOCK(); |
| return EBUSY; |
| } |
| |
| dev->unique_len = 20; |
| dev->unique = malloc(dev->unique_len + 1, M_DRM, M_NOWAIT); |
| if (dev->unique == NULL) { |
| DRM_UNLOCK(); |
| return ENOMEM; |
| } |
| |
| 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; |
| } |
| |
| int drm_getmap(DRM_IOCTL_ARGS) |
| { |
| DRM_DEVICE; |
| drm_map_t map; |
| drm_local_map_t *mapinlist; |
| int idx; |
| int i = 0; |
| |
| 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; |
| map.size = mapinlist->size; |
| map.type = mapinlist->type; |
| map.flags = mapinlist->flags; |
| map.handle = mapinlist->handle; |
| map.mtrr = mapinlist->mtrr; |
| break; |
| } |
| i++; |
| } |
| |
| DRM_UNLOCK(); |
| |
| if (mapinlist == NULL) |
| return EINVAL; |
| |
| DRM_COPY_TO_USER_IOCTL( (drm_map_t *)data, map, sizeof(map) ); |
| |
| return 0; |
| } |
| |
| int drm_getclient(DRM_IOCTL_ARGS) |
| { |
| DRM_DEVICE; |
| drm_client_t client; |
| drm_file_t *pt; |
| int idx; |
| int i = 0; |
| |
| 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(); |
| |
| *(drm_client_t *)data = client; |
| return 0; |
| } |
| i++; |
| } |
| DRM_UNLOCK(); |
| |
| DRM_COPY_TO_USER_IOCTL( (drm_client_t *)data, client, sizeof(client) ); |
| |
| return 0; |
| } |
| |
| int drm_getstats(DRM_IOCTL_ARGS) |
| { |
| DRM_DEVICE; |
| drm_stats_t stats; |
| int i; |
| |
| memset(&stats, 0, 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(); |
| |
| DRM_COPY_TO_USER_IOCTL( (drm_stats_t *)data, stats, sizeof(stats) ); |
| |
| return 0; |
| } |
| |
| #define DRM_IF_MAJOR 1 |
| #define DRM_IF_MINOR 2 |
| |
| 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 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 |
| */ |
| 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 EINVAL; |
| } |
| return 0; |
| } |
| |
| |
| int drm_noop(DRM_IOCTL_ARGS) |
| { |
| DRM_DEBUG("\n"); |
| return 0; |
| } |