280 lines
6.6 KiB
C
280 lines
6.6 KiB
C
/* drm_ioctl.h -- IOCTL processing for DRM -*- linux-c -*-
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* Created: Fri Jan 8 09:01:26 1999 by faith@valinux.com
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*
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* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
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* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
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* All Rights Reserved.
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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 (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* 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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* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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:
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* Rickard E. (Rik) Faith <faith@valinux.com>
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* Gareth Hughes <gareth@valinux.com>
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*
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*/
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#include "drmP.h"
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/*
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* Beginning in revision 1.1 of the DRM interface, getunique will return
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* a unique in the form pci:oooo:bb:dd.f (o=domain, b=bus, d=device, f=function)
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* before setunique has been called. The format for the bus-specific part of
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* the unique is not defined for any other bus.
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*/
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int DRM(getunique)( DRM_IOCTL_ARGS )
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{
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DRM_DEVICE;
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drm_unique_t u;
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DRM_COPY_FROM_USER_IOCTL( u, (drm_unique_t *)data, sizeof(u) );
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if (u.unique_len >= dev->unique_len) {
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if (DRM_COPY_TO_USER(u.unique, dev->unique, dev->unique_len))
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return DRM_ERR(EFAULT);
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}
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u.unique_len = dev->unique_len;
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DRM_COPY_TO_USER_IOCTL( (drm_unique_t *)data, u, sizeof(u) );
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return 0;
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}
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/* Deprecated in DRM version 1.1, and will return EBUSY when setversion has
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* requested version 1.1 or greater.
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*/
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int DRM(setunique)( DRM_IOCTL_ARGS )
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{
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DRM_DEVICE;
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drm_unique_t u;
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int domain, bus, slot, func, ret;
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if (dev->unique_len || dev->unique)
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return DRM_ERR(EBUSY);
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DRM_COPY_FROM_USER_IOCTL( u, (drm_unique_t *)data, sizeof(u) );
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if (!u.unique_len || u.unique_len > 1024)
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return DRM_ERR(EINVAL);
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dev->unique_len = u.unique_len;
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dev->unique = DRM(alloc)(u.unique_len + 1, DRM_MEM_DRIVER);
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if (dev->unique == NULL)
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return DRM_ERR(ENOMEM);
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if (DRM_COPY_FROM_USER(dev->unique, u.unique, dev->unique_len))
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return DRM_ERR(EFAULT);
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dev->unique[dev->unique_len] = '\0';
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/* Return error if the busid submitted doesn't match the device's actual
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* busid.
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*/
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ret = sscanf(dev->unique, "PCI:%d:%d:%d", &bus, &slot, &func);
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if (ret != 3)
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return DRM_ERR(EINVAL);
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domain = bus >> 8;
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bus &= 0xff;
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if ((domain != dev->pci_domain) ||
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(bus != dev->pci_bus) ||
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(slot != dev->pci_slot) ||
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(func != dev->pci_func))
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return DRM_ERR(EINVAL);
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return 0;
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}
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static int
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DRM(set_busid)(drm_device_t *dev)
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{
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if (dev->unique != NULL)
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return EBUSY;
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dev->unique_len = 20;
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dev->unique = DRM(alloc)(dev->unique_len + 1, DRM_MEM_DRIVER);
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if (dev->unique == NULL)
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return ENOMEM;
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snprintf(dev->unique, dev->unique_len, "pci:%04x:%02x:%02x.%1x",
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dev->pci_domain, dev->pci_bus, dev->pci_slot, dev->pci_func);
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return 0;
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}
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int DRM(getmap)( DRM_IOCTL_ARGS )
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{
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DRM_DEVICE;
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drm_map_t map;
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drm_local_map_t *mapinlist;
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drm_map_list_entry_t *list;
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int idx;
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int i = 0;
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DRM_COPY_FROM_USER_IOCTL( map, (drm_map_t *)data, sizeof(map) );
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idx = map.offset;
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DRM_LOCK();
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if (idx < 0) {
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DRM_UNLOCK();
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return DRM_ERR(EINVAL);
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}
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TAILQ_FOREACH(list, dev->maplist, link) {
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mapinlist = list->map;
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if (i==idx) {
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map.offset = mapinlist->offset;
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map.size = mapinlist->size;
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map.type = mapinlist->type;
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map.flags = mapinlist->flags;
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map.handle = mapinlist->handle;
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map.mtrr = mapinlist->mtrr;
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break;
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}
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i++;
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}
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DRM_UNLOCK();
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if (!list)
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return EINVAL;
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DRM_COPY_TO_USER_IOCTL( (drm_map_t *)data, map, sizeof(map) );
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return 0;
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}
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int DRM(getclient)( DRM_IOCTL_ARGS )
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{
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DRM_DEVICE;
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drm_client_t client;
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drm_file_t *pt;
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int idx;
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int i = 0;
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DRM_COPY_FROM_USER_IOCTL( client, (drm_client_t *)data, sizeof(client) );
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idx = client.idx;
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DRM_LOCK();
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TAILQ_FOREACH(pt, &dev->files, link) {
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if (i==idx)
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{
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client.auth = pt->authenticated;
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client.pid = pt->pid;
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client.uid = pt->uid;
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client.magic = pt->magic;
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client.iocs = pt->ioctl_count;
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DRM_UNLOCK();
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*(drm_client_t *)data = client;
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return 0;
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}
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i++;
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}
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DRM_UNLOCK();
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DRM_COPY_TO_USER_IOCTL( (drm_client_t *)data, client, sizeof(client) );
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return 0;
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}
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int DRM(getstats)( DRM_IOCTL_ARGS )
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{
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DRM_DEVICE;
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drm_stats_t stats;
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int i;
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memset(&stats, 0, sizeof(stats));
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DRM_LOCK();
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for (i = 0; i < dev->counters; i++) {
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if (dev->types[i] == _DRM_STAT_LOCK)
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stats.data[i].value
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= (dev->lock.hw_lock
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? dev->lock.hw_lock->lock : 0);
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else
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stats.data[i].value = atomic_read(&dev->counts[i]);
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stats.data[i].type = dev->types[i];
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}
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stats.count = dev->counters;
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DRM_UNLOCK();
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DRM_COPY_TO_USER_IOCTL( (drm_stats_t *)data, stats, sizeof(stats) );
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return 0;
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}
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#define DRM_IF_MAJOR 1
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#define DRM_IF_MINOR 2
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int DRM(setversion)(DRM_IOCTL_ARGS)
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{
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DRM_DEVICE;
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drm_set_version_t sv;
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drm_set_version_t retv;
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int if_version;
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DRM_COPY_FROM_USER_IOCTL(sv, (drm_set_version_t *)data, sizeof(sv));
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retv.drm_di_major = DRM_IF_MAJOR;
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retv.drm_di_minor = DRM_IF_MINOR;
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retv.drm_dd_major = DRIVER_MAJOR;
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retv.drm_dd_minor = DRIVER_MINOR;
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DRM_COPY_TO_USER_IOCTL((drm_set_version_t *)data, retv, sizeof(sv));
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if (sv.drm_di_major != -1) {
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if (sv.drm_di_major != DRM_IF_MAJOR ||
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sv.drm_di_minor < 0 || sv.drm_di_minor > DRM_IF_MINOR)
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return EINVAL;
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if_version = DRM_IF_VERSION(sv.drm_di_major, sv.drm_dd_minor);
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dev->if_version = DRM_MAX(if_version, dev->if_version);
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if (sv.drm_di_minor >= 1) {
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/*
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* Version 1.1 includes tying of DRM to specific device
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*/
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DRM(set_busid)(dev);
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}
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}
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if (sv.drm_dd_major != -1) {
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if (sv.drm_dd_major != DRIVER_MAJOR ||
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sv.drm_dd_minor < 0 || sv.drm_dd_minor > DRIVER_MINOR)
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return EINVAL;
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#ifdef DRIVER_SETVERSION
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DRIVER_SETVERSION(dev, &sv);
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#endif
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}
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return 0;
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}
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int DRM(noop)(DRM_IOCTL_ARGS)
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{
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DRM_DEBUG("\n");
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return 0;
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}
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