283 lines
6.6 KiB
C
283 lines
6.6 KiB
C
/*-
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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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/** @file drm_ioctl.c
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* Varios minor DRM ioctls not applicable to other files, such as versioning
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* information and reporting DRM information to userland.
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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(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct drm_unique *u = data;
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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 EFAULT;
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}
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u->unique_len = dev->unique_len;
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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(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct drm_unique *u = data;
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int domain, bus, slot, func, ret;
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char *busid;
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/* Check and copy in the submitted Bus ID */
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if (!u->unique_len || u->unique_len > 1024)
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return EINVAL;
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busid = malloc(u->unique_len + 1, M_DRM, M_WAITOK);
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if (busid == NULL)
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return ENOMEM;
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if (DRM_COPY_FROM_USER(busid, u->unique, u->unique_len)) {
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free(busid, M_DRM);
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return EFAULT;
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}
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busid[u->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(busid, "PCI:%d:%d:%d", &bus, &slot, &func);
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if (ret != 3) {
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free(busid, M_DRM);
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return EINVAL;
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}
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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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free(busid, M_DRM);
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return EINVAL;
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}
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/* Actually set the device's busid now. */
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DRM_LOCK();
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if (dev->unique_len || dev->unique) {
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DRM_UNLOCK();
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return EBUSY;
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}
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dev->unique_len = u->unique_len;
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dev->unique = busid;
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DRM_UNLOCK();
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return 0;
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}
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static int
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drm_set_busid(struct drm_device *dev)
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{
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DRM_LOCK();
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if (dev->unique != NULL) {
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DRM_UNLOCK();
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return EBUSY;
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}
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dev->unique_len = 20;
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dev->unique = malloc(dev->unique_len + 1, M_DRM, M_NOWAIT);
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if (dev->unique == NULL) {
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DRM_UNLOCK();
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return ENOMEM;
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}
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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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DRM_UNLOCK();
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return 0;
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}
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int drm_getmap(struct drm_device *dev, void *data, struct drm_file *file_priv)
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{
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struct drm_map *map = data;
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drm_local_map_t *mapinlist;
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int idx;
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int i = 0;
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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 EINVAL;
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}
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TAILQ_FOREACH(mapinlist, &dev->maplist, link) {
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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 (mapinlist == NULL)
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return EINVAL;
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return 0;
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}
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int drm_getclient(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct drm_client *client = data;
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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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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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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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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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return EINVAL;
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}
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int drm_getstats(struct drm_device *dev, void *data, struct drm_file *file_priv)
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{
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struct drm_stats *stats = data;
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int i;
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memset(stats, 0, sizeof(struct drm_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 ? 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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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(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct drm_set_version *sv = data;
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struct drm_set_version ver;
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int if_version;
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/* Save the incoming data, and set the response before continuing
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* any further.
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*/
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ver = *sv;
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sv->drm_di_major = DRM_IF_MAJOR;
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sv->drm_di_minor = DRM_IF_MINOR;
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sv->drm_dd_major = dev->driver->major;
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sv->drm_dd_minor = dev->driver->minor;
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if (ver.drm_di_major != -1) {
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if (ver.drm_di_major != DRM_IF_MAJOR ||
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ver.drm_di_minor < 0 || ver.drm_di_minor > DRM_IF_MINOR) {
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return EINVAL;
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}
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if_version = DRM_IF_VERSION(ver.drm_di_major,
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ver.drm_dd_minor);
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dev->if_version = DRM_MAX(if_version, dev->if_version);
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if (ver.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 (ver.drm_dd_major != -1) {
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if (ver.drm_dd_major != dev->driver->major ||
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ver.drm_dd_minor < 0 ||
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ver.drm_dd_minor > dev->driver->minor)
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{
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return EINVAL;
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}
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}
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return 0;
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}
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int drm_noop(struct drm_device *dev, void *data, struct drm_file *file_priv)
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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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