1d0d7f3ee4
locking, and the apparently unnecessary locking for -stable has been removed. This may fix issues with missed interrupts since April, which manifested themselves as slowdowns or hangs in radeon, in particular. Many cleanups also took place. In the shared code, there are improvements to r128 driver stability.
310 lines
7.0 KiB
C
310 lines
7.0 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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* $FreeBSD$
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*/
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#include "dev/drm/drmP.h"
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int DRM(irq_busid)( DRM_IOCTL_ARGS )
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{
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#ifdef __FreeBSD__
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drm_irq_busid_t id;
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devclass_t pci;
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device_t bus, dev;
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device_t *kids;
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int error, i, num_kids;
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DRM_COPY_FROM_USER_IOCTL( id, (drm_irq_busid_t *)data, sizeof(id) );
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pci = devclass_find("pci");
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if (!pci)
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return ENOENT;
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bus = devclass_get_device(pci, id.busnum);
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if (!bus)
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return ENOENT;
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error = device_get_children(bus, &kids, &num_kids);
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if (error)
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return error;
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dev = 0;
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for (i = 0; i < num_kids; i++) {
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dev = kids[i];
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if (pci_get_slot(dev) == id.devnum
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&& pci_get_function(dev) == id.funcnum)
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break;
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}
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free(kids, M_TEMP);
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if (i != num_kids)
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id.irq = pci_get_irq(dev);
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else
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id.irq = 0;
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DRM_DEBUG("%d:%d:%d => IRQ %d\n",
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id.busnum, id.devnum, id.funcnum, id.irq);
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DRM_COPY_TO_USER_IOCTL( (drm_irq_busid_t *)data, id, sizeof(id) );
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return 0;
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#else
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/* don't support interrupt-driven drivers on Net yet */
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return ENOENT;
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#endif
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}
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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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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 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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/* XXX Fix domain number (alpha hoses) */
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snprintf(dev->unique, dev->unique_len, "pci:%04x:%02x:%02x.%1x",
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0, pci_get_bus(dev->device), pci_get_slot(dev->device),
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pci_get_function(dev->device));
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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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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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DRM_COPY_FROM_USER_IOCTL(sv, (drm_set_version_t *)data, sizeof(sv));
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retv.drm_di_major = 1;
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retv.drm_di_minor = 1;
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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 != 1 || sv.drm_di_minor < 0)
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return EINVAL;
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if (sv.drm_di_minor > 1)
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return EINVAL;
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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 || sv.drm_dd_minor < 0)
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return EINVAL;
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if (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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