455fa6518a
This update brings few features:
o Support for the setmaster/dropmaster ioctls. For instance, they
are used to run multiple X servers simultaneously.
o Support for minor devices. The only user-visible change is a new
entry in /dev/dri but it is useless at the moment. This is a
first step to support render nodes [1].
The main benefit is to greatly reduce the diff with Linux (at the
expense of an unreadable commit diff). Hopefully, next upgrades will be
easier.
No updates were made to the drivers, beside adapting them to API
changes.
[1] https://en.wikipedia.org/wiki/Direct_Rendering_Manager#Render_nodes
Tested by: Many people
MFC after: 1 month
Relnotes: yes
404 lines
10 KiB
C
404 lines
10 KiB
C
/*-
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* Copyright 2003 Eric Anholt
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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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* ERIC ANHOLT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/** @file drm_sysctl.c
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* Implementation of various sysctls for controlling DRM behavior and reporting
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* debug information.
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*/
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#include <dev/drm2/drmP.h>
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#include <dev/drm2/drm.h>
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#include <sys/sysctl.h>
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static int drm_name_info DRM_SYSCTL_HANDLER_ARGS;
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static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS;
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static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS;
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static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS;
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static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS;
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struct drm_sysctl_list {
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const char *name;
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int (*f) DRM_SYSCTL_HANDLER_ARGS;
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} drm_sysctl_list[] = {
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{"name", drm_name_info},
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{"vm", drm_vm_info},
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{"clients", drm_clients_info},
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{"bufs", drm_bufs_info},
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{"vblank", drm_vblank_info},
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};
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#define DRM_SYSCTL_ENTRIES (sizeof(drm_sysctl_list)/sizeof(drm_sysctl_list[0]))
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struct drm_sysctl_info {
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struct sysctl_ctx_list ctx;
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char name[2];
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};
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int drm_sysctl_init(struct drm_device *dev)
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{
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struct drm_sysctl_info *info;
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struct sysctl_oid *oid;
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struct sysctl_oid *top, *drioid;
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int i;
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info = malloc(sizeof *info, DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
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dev->sysctl = info;
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/* Add the sysctl node for DRI if it doesn't already exist */
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drioid = SYSCTL_ADD_NODE(&info->ctx, SYSCTL_CHILDREN(&sysctl___hw), OID_AUTO,
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"dri", CTLFLAG_RW, NULL, "DRI Graphics");
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if (!drioid) {
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free(dev->sysctl, DRM_MEM_DRIVER);
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dev->sysctl = NULL;
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return (-ENOMEM);
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}
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/* Find the next free slot under hw.dri */
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i = 0;
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SLIST_FOREACH(oid, SYSCTL_CHILDREN(drioid), oid_link) {
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if (i <= oid->oid_arg2)
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i = oid->oid_arg2 + 1;
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}
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if (i > 9) {
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drm_sysctl_cleanup(dev);
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return (-ENOSPC);
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}
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dev->sysctl_node_idx = i;
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/* Add the hw.dri.x for our device */
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info->name[0] = '0' + i;
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info->name[1] = 0;
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top = SYSCTL_ADD_NODE(&info->ctx, SYSCTL_CHILDREN(drioid),
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OID_AUTO, info->name, CTLFLAG_RW, NULL, NULL);
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if (!top) {
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drm_sysctl_cleanup(dev);
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return (-ENOMEM);
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}
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for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) {
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oid = SYSCTL_ADD_OID(&info->ctx,
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SYSCTL_CHILDREN(top),
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OID_AUTO,
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drm_sysctl_list[i].name,
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CTLTYPE_STRING | CTLFLAG_RD,
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dev,
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0,
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drm_sysctl_list[i].f,
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"A",
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NULL);
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if (!oid) {
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drm_sysctl_cleanup(dev);
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return (-ENOMEM);
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}
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}
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SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "debug",
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CTLFLAG_RW, &drm_debug, sizeof(drm_debug),
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"Enable debugging output");
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SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "notyet",
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CTLFLAG_RW, &drm_notyet, sizeof(drm_debug),
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"Enable notyet reminders");
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if (dev->driver->sysctl_init != NULL)
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dev->driver->sysctl_init(dev, &info->ctx, top);
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SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO,
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"vblank_offdelay", CTLFLAG_RW, &drm_vblank_offdelay,
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sizeof(drm_vblank_offdelay),
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"");
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SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO,
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"timestamp_precision", CTLFLAG_RW, &drm_timestamp_precision,
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sizeof(drm_timestamp_precision),
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"");
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return (0);
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}
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int drm_sysctl_cleanup(struct drm_device *dev)
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{
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int error;
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if (dev->sysctl == NULL)
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return (0);
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error = sysctl_ctx_free(&dev->sysctl->ctx);
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free(dev->sysctl, DRM_MEM_DRIVER);
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dev->sysctl = NULL;
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if (dev->driver->sysctl_cleanup != NULL)
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dev->driver->sysctl_cleanup(dev);
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return (-error);
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}
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#define DRM_SYSCTL_PRINT(fmt, arg...) \
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do { \
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snprintf(buf, sizeof(buf), fmt, ##arg); \
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retcode = SYSCTL_OUT(req, buf, strlen(buf)); \
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if (retcode) \
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goto done; \
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} while (0)
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static int drm_name_info DRM_SYSCTL_HANDLER_ARGS
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{
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struct drm_device *dev = arg1;
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struct drm_minor *minor;
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struct drm_master *master;
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char buf[128];
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int retcode;
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int hasunique = 0;
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/* FIXME: This still uses primary minor. */
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minor = dev->primary;
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DRM_SYSCTL_PRINT("%s 0x%jx", dev->driver->name,
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(uintmax_t)dev2udev(minor->device));
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DRM_LOCK(dev);
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master = minor->master;
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if (master != NULL && master->unique) {
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snprintf(buf, sizeof(buf), " %s", master->unique);
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hasunique = 1;
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}
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DRM_UNLOCK(dev);
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if (hasunique)
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SYSCTL_OUT(req, buf, strlen(buf));
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SYSCTL_OUT(req, "", 1);
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done:
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return retcode;
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}
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static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS
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{
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struct drm_device *dev = arg1;
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struct drm_map_list *entry;
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struct drm_local_map *map, *tempmaps;
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const char *types[] = {
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[_DRM_FRAME_BUFFER] = "FB",
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[_DRM_REGISTERS] = "REG",
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[_DRM_SHM] = "SHM",
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[_DRM_AGP] = "AGP",
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[_DRM_SCATTER_GATHER] = "SG",
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[_DRM_CONSISTENT] = "CONS",
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[_DRM_GEM] = "GEM"
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};
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const char *type, *yesno;
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int i, mapcount;
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char buf[128];
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int retcode;
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/* We can't hold the lock while doing SYSCTL_OUTs, so allocate a
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* temporary copy of all the map entries and then SYSCTL_OUT that.
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*/
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DRM_LOCK(dev);
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mapcount = 0;
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list_for_each_entry(entry, &dev->maplist, head) {
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if (entry->map != NULL)
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mapcount++;
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}
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tempmaps = malloc(sizeof(*tempmaps) * mapcount, DRM_MEM_DRIVER,
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M_NOWAIT);
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if (tempmaps == NULL) {
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DRM_UNLOCK(dev);
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return ENOMEM;
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}
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i = 0;
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list_for_each_entry(entry, &dev->maplist, head) {
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if (entry->map != NULL)
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tempmaps[i++] = *entry->map;
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}
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DRM_UNLOCK(dev);
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DRM_SYSCTL_PRINT("\nslot offset size "
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"type flags address mtrr\n");
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for (i = 0; i < mapcount; i++) {
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map = &tempmaps[i];
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switch(map->type) {
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default:
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type = "??";
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break;
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case _DRM_FRAME_BUFFER:
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case _DRM_REGISTERS:
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case _DRM_SHM:
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case _DRM_AGP:
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case _DRM_SCATTER_GATHER:
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case _DRM_CONSISTENT:
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case _DRM_GEM:
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type = types[map->type];
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break;
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}
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if (map->mtrr < 0)
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yesno = "no";
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else
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yesno = "yes";
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DRM_SYSCTL_PRINT(
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"%4d 0x%016llx 0x%08lx %4.4s 0x%02x 0x%016lx %s\n",
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i, (unsigned long long)map->offset, map->size, type,
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map->flags, (unsigned long)map->handle, yesno);
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}
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SYSCTL_OUT(req, "", 1);
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done:
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free(tempmaps, DRM_MEM_DRIVER);
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return retcode;
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}
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static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS
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{
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struct drm_device *dev = arg1;
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struct drm_device_dma *dma = dev->dma;
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struct drm_device_dma tempdma;
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int *templists;
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int i;
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char buf[128];
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int retcode;
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/* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary
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* copy of the whole structure and the relevant data from buflist.
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*/
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DRM_LOCK(dev);
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if (dma == NULL) {
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DRM_UNLOCK(dev);
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return 0;
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}
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DRM_SPINLOCK(&dev->dma_lock);
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tempdma = *dma;
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templists = malloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER,
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M_NOWAIT);
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for (i = 0; i < dma->buf_count; i++)
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templists[i] = dma->buflist[i]->list;
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dma = &tempdma;
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DRM_SPINUNLOCK(&dev->dma_lock);
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DRM_UNLOCK(dev);
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DRM_SYSCTL_PRINT("\n o size count free segs pages kB\n");
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for (i = 0; i <= DRM_MAX_ORDER; i++) {
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if (dma->bufs[i].buf_count)
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DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n",
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i,
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dma->bufs[i].buf_size,
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dma->bufs[i].buf_count,
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atomic_read(&dma->bufs[i]
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.freelist.count),
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dma->bufs[i].seg_count,
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dma->bufs[i].seg_count
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*(1 << dma->bufs[i].page_order),
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(dma->bufs[i].seg_count
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* (1 << dma->bufs[i].page_order))
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* (int)PAGE_SIZE / 1024);
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}
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DRM_SYSCTL_PRINT("\n");
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for (i = 0; i < dma->buf_count; i++) {
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if (i && !(i%32)) DRM_SYSCTL_PRINT("\n");
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DRM_SYSCTL_PRINT(" %d", templists[i]);
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}
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DRM_SYSCTL_PRINT("\n");
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SYSCTL_OUT(req, "", 1);
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done:
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free(templists, DRM_MEM_DRIVER);
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return retcode;
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}
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static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS
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{
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struct drm_device *dev = arg1;
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struct drm_file *priv, *tempprivs;
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char buf[128];
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int retcode;
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int privcount, i;
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DRM_LOCK(dev);
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privcount = 0;
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list_for_each_entry(priv, &dev->filelist, lhead)
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privcount++;
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tempprivs = malloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER,
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M_NOWAIT);
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if (tempprivs == NULL) {
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DRM_UNLOCK(dev);
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return ENOMEM;
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}
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i = 0;
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list_for_each_entry(priv, &dev->filelist, lhead)
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tempprivs[i++] = *priv;
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DRM_UNLOCK(dev);
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DRM_SYSCTL_PRINT(
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"\na dev pid uid magic ioctls\n");
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for (i = 0; i < privcount; i++) {
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priv = &tempprivs[i];
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DRM_SYSCTL_PRINT("%c %-12s %5d %5d %10u %10lu\n",
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priv->authenticated ? 'y' : 'n',
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devtoname(priv->minor->device),
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priv->pid,
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priv->uid,
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priv->magic,
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priv->ioctl_count);
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}
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SYSCTL_OUT(req, "", 1);
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done:
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free(tempprivs, DRM_MEM_DRIVER);
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return retcode;
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}
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static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS
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{
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struct drm_device *dev = arg1;
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char buf[128];
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int retcode;
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int i;
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DRM_SYSCTL_PRINT("\ncrtc ref count last enabled inmodeset\n");
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DRM_LOCK(dev);
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if (dev->_vblank_count == NULL)
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goto done;
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for (i = 0 ; i < dev->num_crtcs ; i++) {
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DRM_SYSCTL_PRINT(" %02d %02d %08d %08d %02d %02d\n",
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i, dev->vblank_refcount[i],
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dev->_vblank_count[i],
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dev->last_vblank[i],
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dev->vblank_enabled[i],
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dev->vblank_inmodeset[i]);
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}
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done:
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DRM_UNLOCK(dev);
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SYSCTL_OUT(req, "", -1);
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return retcode;
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}
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