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/*-
* Copyright 2003 Eric Anholt
* 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
* ERIC ANHOLT 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/drm/drm_sysctl.c 220979 2011-04-23 23:11:44Z kib $");
/** @file drm_sysctl.c
* Implementation of various sysctls for controlling DRM behavior and reporting
* debug information.
*/
#include "dev/drm/drmP.h"
#include "dev/drm/drm.h"
#include <sys/sysctl.h>
static int drm_name_info DRM_SYSCTL_HANDLER_ARGS;
static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS;
static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS;
static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS;
static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS;
struct drm_sysctl_list {
const char *name;
int (*f) DRM_SYSCTL_HANDLER_ARGS;
} drm_sysctl_list[] = {
{"name", drm_name_info},
{"vm", drm_vm_info},
{"clients", drm_clients_info},
{"bufs", drm_bufs_info},
{"vblank", drm_vblank_info},
};
#define DRM_SYSCTL_ENTRIES (sizeof(drm_sysctl_list)/sizeof(drm_sysctl_list[0]))
struct drm_sysctl_info {
struct sysctl_ctx_list ctx;
char name[2];
};
int drm_sysctl_init(struct drm_device *dev)
{
struct drm_sysctl_info *info;
struct sysctl_oid *oid;
struct sysctl_oid *top, *drioid;
int i;
info = malloc(sizeof *info, DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
if ( !info )
return 1;
dev->sysctl = info;
/* Add the sysctl node for DRI if it doesn't already exist */
drioid = SYSCTL_ADD_NODE( &info->ctx, &sysctl__hw_children, OID_AUTO, "dri", CTLFLAG_RW, NULL, "DRI Graphics");
if (!drioid)
return 1;
/* Find the next free slot under hw.dri */
i = 0;
SLIST_FOREACH(oid, SYSCTL_CHILDREN(drioid), oid_link) {
if (i <= oid->oid_arg2)
i = oid->oid_arg2 + 1;
}
if (i>9)
return 1;
/* Add the hw.dri.x for our device */
info->name[0] = '0' + i;
info->name[1] = 0;
top = SYSCTL_ADD_NODE( &info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, info->name, CTLFLAG_RW, NULL, NULL);
if (!top)
return 1;
for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) {
oid = SYSCTL_ADD_OID(&info->ctx,
SYSCTL_CHILDREN(top),
OID_AUTO,
drm_sysctl_list[i].name,
CTLTYPE_STRING | CTLFLAG_RD,
dev,
0,
drm_sysctl_list[i].f,
"A",
NULL);
if (!oid)
return 1;
}
SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(top), OID_AUTO, "debug",
CTLFLAG_RW, &drm_debug_flag, sizeof(drm_debug_flag),
"Enable debugging output");
return 0;
}
int drm_sysctl_cleanup(struct drm_device *dev)
{
int error;
error = sysctl_ctx_free( &dev->sysctl->ctx );
free(dev->sysctl, DRM_MEM_DRIVER);
dev->sysctl = NULL;
return error;
}
#define DRM_SYSCTL_PRINT(fmt, arg...) \
do { \
snprintf(buf, sizeof(buf), fmt, ##arg); \
retcode = SYSCTL_OUT(req, buf, strlen(buf)); \
if (retcode) \
goto done; \
} while (0)
static int drm_name_info DRM_SYSCTL_HANDLER_ARGS
{
struct drm_device *dev = arg1;
char buf[128];
int retcode;
int hasunique = 0;
DRM_SYSCTL_PRINT("%s 0x%x", dev->driver->name, dev2udev(dev->devnode));
DRM_LOCK();
if (dev->unique) {
snprintf(buf, sizeof(buf), " %s", dev->unique);
hasunique = 1;
}
DRM_UNLOCK();
if (hasunique)
SYSCTL_OUT(req, buf, strlen(buf));
SYSCTL_OUT(req, "", 1);
done:
return retcode;
}
static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS
{
struct drm_device *dev = arg1;
drm_local_map_t *map, *tempmaps;
const char *types[] = { "FB", "REG", "SHM", "AGP", "SG" };
const char *type, *yesno;
int i, mapcount;
char buf[128];
int retcode;
/* We can't hold the lock while doing SYSCTL_OUTs, so allocate a
* temporary copy of all the map entries and then SYSCTL_OUT that.
*/
DRM_LOCK();
mapcount = 0;
TAILQ_FOREACH(map, &dev->maplist, link)
mapcount++;
tempmaps = malloc(sizeof(drm_local_map_t) * mapcount, DRM_MEM_DRIVER,
M_NOWAIT);
if (tempmaps == NULL) {
DRM_UNLOCK();
return ENOMEM;
}
i = 0;
TAILQ_FOREACH(map, &dev->maplist, link)
tempmaps[i++] = *map;
DRM_UNLOCK();
DRM_SYSCTL_PRINT("\nslot offset size "
"type flags address handle mtrr\n");
for (i = 0; i < mapcount; i++) {
map = &tempmaps[i];
if (map->type < 0 || map->type > 4)
type = "??";
else
type = types[map->type];
if (!map->mtrr)
yesno = "no";
else
yesno = "yes";
DRM_SYSCTL_PRINT(
"%4d 0x%016lx 0x%08lx %4.4s 0x%02x 0x%016lx %6d %s\n",
i, map->offset, map->size, type, map->flags,
(unsigned long)map->virtual,
(unsigned int)((unsigned long)map->handle >>
DRM_MAP_HANDLE_SHIFT), yesno);
}
SYSCTL_OUT(req, "", 1);
done:
free(tempmaps, DRM_MEM_DRIVER);
return retcode;
}
static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS
{
struct drm_device *dev = arg1;
drm_device_dma_t *dma = dev->dma;
drm_device_dma_t tempdma;
int *templists;
int i;
char buf[128];
int retcode;
/* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary
* copy of the whole structure and the relevant data from buflist.
*/
DRM_LOCK();
if (dma == NULL) {
DRM_UNLOCK();
return 0;
}
DRM_SPINLOCK(&dev->dma_lock);
tempdma = *dma;
templists = malloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER,
M_NOWAIT);
for (i = 0; i < dma->buf_count; i++)
templists[i] = dma->buflist[i]->list;
dma = &tempdma;
DRM_SPINUNLOCK(&dev->dma_lock);
DRM_UNLOCK();
DRM_SYSCTL_PRINT("\n o size count free segs pages kB\n");
for (i = 0; i <= DRM_MAX_ORDER; i++) {
if (dma->bufs[i].buf_count)
DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n",
i,
dma->bufs[i].buf_size,
dma->bufs[i].buf_count,
atomic_read(&dma->bufs[i]
.freelist.count),
dma->bufs[i].seg_count,
dma->bufs[i].seg_count
*(1 << dma->bufs[i].page_order),
(dma->bufs[i].seg_count
* (1 << dma->bufs[i].page_order))
* (int)PAGE_SIZE / 1024);
}
DRM_SYSCTL_PRINT("\n");
for (i = 0; i < dma->buf_count; i++) {
if (i && !(i%32)) DRM_SYSCTL_PRINT("\n");
DRM_SYSCTL_PRINT(" %d", templists[i]);
}
DRM_SYSCTL_PRINT("\n");
SYSCTL_OUT(req, "", 1);
done:
free(templists, DRM_MEM_DRIVER);
return retcode;
}
static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS
{
struct drm_device *dev = arg1;
struct drm_file *priv, *tempprivs;
char buf[128];
int retcode;
int privcount, i;
DRM_LOCK();
privcount = 0;
TAILQ_FOREACH(priv, &dev->files, link)
privcount++;
tempprivs = malloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER,
M_NOWAIT);
if (tempprivs == NULL) {
DRM_UNLOCK();
return ENOMEM;
}
i = 0;
TAILQ_FOREACH(priv, &dev->files, link)
tempprivs[i++] = *priv;
DRM_UNLOCK();
DRM_SYSCTL_PRINT(
"\na dev pid uid magic ioctls\n");
for (i = 0; i < privcount; i++) {
priv = &tempprivs[i];
DRM_SYSCTL_PRINT("%c %-12s %5d %5d %10u %10lu\n",
priv->authenticated ? 'y' : 'n',
devtoname(priv->dev->devnode),
priv->pid,
priv->uid,
priv->magic,
priv->ioctl_count);
}
SYSCTL_OUT(req, "", 1);
done:
free(tempprivs, DRM_MEM_DRIVER);
return retcode;
}
static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS
{
struct drm_device *dev = arg1;
char buf[128];
int retcode;
int i;
DRM_SYSCTL_PRINT("\ncrtc ref count last enabled inmodeset\n");
for(i = 0 ; i < dev->num_crtcs ; i++) {
DRM_SYSCTL_PRINT(" %02d %02d %08d %08d %02d %02d\n",
i, atomic_load_acq_32(&dev->vblank[i].refcount),
atomic_load_acq_32(&dev->vblank[i].count),
atomic_load_acq_32(&dev->vblank[i].last),
atomic_load_acq_int(&dev->vblank[i].enabled),
atomic_load_acq_int(&dev->vblank[i].inmodeset));
}
SYSCTL_OUT(req, "", -1);
done:
return retcode;
}