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drm/linux-core/drm_proc.c

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/* drm_proc.h -- /proc support for DRM -*- linux-c -*-
* Created: Mon Jan 11 09:48:47 1999 by faith@valinux.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
* 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
* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
*
* Authors:
* Rickard E. (Rik) Faith <faith@valinux.com>
* Gareth Hughes <gareth@valinux.com>
*
* Acknowledgements:
* Matthew J Sottek <matthew.j.sottek@intel.com> sent in a patch to fix
* the problem with the proc files not outputting all their information.
*/
#define __NO_VERSION__
#include "drmP.h"
static int DRM(name_info)(char *buf, char **start, off_t offset,
int request, int *eof, void *data);
static int DRM(vm_info)(char *buf, char **start, off_t offset,
int request, int *eof, void *data);
static int DRM(clients_info)(char *buf, char **start, off_t offset,
int request, int *eof, void *data);
static int DRM(queues_info)(char *buf, char **start, off_t offset,
int request, int *eof, void *data);
static int DRM(bufs_info)(char *buf, char **start, off_t offset,
int request, int *eof, void *data);
#if DRM_DEBUG_CODE
static int DRM(vma_info)(char *buf, char **start, off_t offset,
int request, int *eof, void *data);
#endif
#if __HAVE_DMA_HISTOGRAM
static int DRM(histo_info)(char *buf, char **start, off_t offset,
int request, int *eof, void *data);
#endif
struct drm_proc_list {
const char *name;
int (*f)(char *, char **, off_t, int, int *, void *);
} DRM(proc_list)[] = {
{ "name", DRM(name_info) },
{ "mem", DRM(mem_info) },
{ "vm", DRM(vm_info) },
{ "clients", DRM(clients_info) },
{ "queues", DRM(queues_info) },
{ "bufs", DRM(bufs_info) },
#if DRM_DEBUG_CODE
{ "vma", DRM(vma_info) },
#endif
#if __HAVE_DMA_HISTOGRAM
{ "histo", DRM(histo_info) },
#endif
};
#define DRM_PROC_ENTRIES (sizeof(DRM(proc_list))/sizeof(DRM(proc_list)[0]))
struct proc_dir_entry *DRM(proc_init)(drm_device_t *dev, int minor,
struct proc_dir_entry *root,
struct proc_dir_entry **dev_root)
{
struct proc_dir_entry *ent;
int i, j;
char name[64];
if (!minor) root = create_proc_entry("dri", S_IFDIR, NULL);
if (!root) {
DRM_ERROR("Cannot create /proc/dri\n");
return NULL;
}
sprintf(name, "%d", minor);
*dev_root = create_proc_entry(name, S_IFDIR, root);
if (!*dev_root) {
DRM_ERROR("Cannot create /proc/%s\n", name);
return NULL;
}
for (i = 0; i < DRM_PROC_ENTRIES; i++) {
ent = create_proc_entry(DRM(proc_list)[i].name,
S_IFREG|S_IRUGO, *dev_root);
if (!ent) {
DRM_ERROR("Cannot create /proc/dri/%s/%s\n",
name, DRM(proc_list)[i].name);
for (j = 0; j < i; j++)
remove_proc_entry(DRM(proc_list)[i].name,
*dev_root);
remove_proc_entry(name, root);
if (!minor) remove_proc_entry("dri", NULL);
return NULL;
}
ent->read_proc = DRM(proc_list)[i].f;
ent->data = dev;
}
return root;
}
int DRM(proc_cleanup)(int minor, struct proc_dir_entry *root,
struct proc_dir_entry *dev_root)
{
int i;
char name[64];
if (!root || !dev_root) return 0;
for (i = 0; i < DRM_PROC_ENTRIES; i++)
remove_proc_entry(DRM(proc_list)[i].name, dev_root);
sprintf(name, "%d", minor);
remove_proc_entry(name, root);
if (!minor) remove_proc_entry("dri", NULL);
return 0;
}
static int DRM(name_info)(char *buf, char **start, off_t offset, int request,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
int len = 0;
if (offset > DRM_PROC_LIMIT) {
*eof = 1;
return 0;
}
*start = &buf[offset];
*eof = 0;
if (dev->unique) {
DRM_PROC_PRINT("%s 0x%x %s\n",
dev->name, dev->device, dev->unique);
} else {
DRM_PROC_PRINT("%s 0x%x\n", dev->name, dev->device);
}
if (len > request + offset) return request;
*eof = 1;
return len - offset;
}
static int DRM(_vm_info)(char *buf, char **start, off_t offset, int request,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
int len = 0;
drm_map_t *map;
drm_map_list_t *r_list;
struct list_head *list;
/* Hardcoded from _DRM_FRAME_BUFFER,
_DRM_REGISTERS, _DRM_SHM, and
_DRM_AGP. */
const char *types[] = { "FB", "REG", "SHM", "AGP" };
const char *type;
int i;
if (offset > DRM_PROC_LIMIT) {
*eof = 1;
return 0;
}
*start = &buf[offset];
*eof = 0;
DRM_PROC_PRINT("slot offset size type flags "
"address mtrr\n\n");
i = 0;
if (dev->maplist != NULL) list_for_each(list, &dev->maplist->head) {
r_list = (drm_map_list_t *)list;
map = r_list->map;
if(!map) continue;
if (map->type < 0 || map->type > 3) type = "??";
else type = types[map->type];
DRM_PROC_PRINT("%4d 0x%08lx 0x%08lx %4.4s 0x%02x 0x%08lx ",
i,
map->offset,
map->size,
type,
map->flags,
(unsigned long)map->handle);
if (map->mtrr < 0) {
DRM_PROC_PRINT("none\n");
} else {
DRM_PROC_PRINT("%4d\n", map->mtrr);
}
i++;
}
if (len > request + offset) return request;
*eof = 1;
return len - offset;
}
static int DRM(vm_info)(char *buf, char **start, off_t offset, int request,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
int ret;
down(&dev->struct_sem);
ret = DRM(_vm_info)(buf, start, offset, request, eof, data);
up(&dev->struct_sem);
return ret;
}
static int DRM(_queues_info)(char *buf, char **start, off_t offset,
int request, int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
int len = 0;
int i;
drm_queue_t *q;
if (offset > DRM_PROC_LIMIT) {
*eof = 1;
return 0;
}
*start = &buf[offset];
*eof = 0;
DRM_PROC_PRINT(" ctx/flags use fin"
" blk/rw/rwf wait flushed queued"
" locks\n\n");
for (i = 0; i < dev->queue_count; i++) {
q = dev->queuelist[i];
atomic_inc(&q->use_count);
DRM_PROC_PRINT_RET(atomic_dec(&q->use_count),
"%5d/0x%03x %5d %5d"
" %5d/%c%c/%c%c%c %5Zd\n",
i,
q->flags,
atomic_read(&q->use_count),
atomic_read(&q->finalization),
atomic_read(&q->block_count),
atomic_read(&q->block_read) ? 'r' : '-',
atomic_read(&q->block_write) ? 'w' : '-',
waitqueue_active(&q->read_queue) ? 'r':'-',
waitqueue_active(&q->write_queue) ? 'w':'-',
waitqueue_active(&q->flush_queue) ? 'f':'-',
DRM_BUFCOUNT(&q->waitlist));
atomic_dec(&q->use_count);
}
if (len > request + offset) return request;
*eof = 1;
return len - offset;
}
static int DRM(queues_info)(char *buf, char **start, off_t offset, int request,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
int ret;
down(&dev->struct_sem);
ret = DRM(_queues_info)(buf, start, offset, request, eof, data);
up(&dev->struct_sem);
return ret;
}
/* drm_bufs_info is called whenever a process reads
/dev/dri/<dev>/bufs. */
static int DRM(_bufs_info)(char *buf, char **start, off_t offset, int request,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
int len = 0;
drm_device_dma_t *dma = dev->dma;
int i;
if (!dma || offset > DRM_PROC_LIMIT) {
*eof = 1;
return 0;
}
*start = &buf[offset];
*eof = 0;
DRM_PROC_PRINT(" o size count free segs pages kB\n\n");
for (i = 0; i <= DRM_MAX_ORDER; i++) {
if (dma->bufs[i].buf_count)
DRM_PROC_PRINT("%2d %8d %5d %5d %5d %5d %5ld\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))
* PAGE_SIZE / 1024);
}
DRM_PROC_PRINT("\n");
for (i = 0; i < dma->buf_count; i++) {
if (i && !(i%32)) DRM_PROC_PRINT("\n");
DRM_PROC_PRINT(" %d", dma->buflist[i]->list);
}
DRM_PROC_PRINT("\n");
if (len > request + offset) return request;
*eof = 1;
return len - offset;
}
static int DRM(bufs_info)(char *buf, char **start, off_t offset, int request,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
int ret;
down(&dev->struct_sem);
ret = DRM(_bufs_info)(buf, start, offset, request, eof, data);
up(&dev->struct_sem);
return ret;
}
static int DRM(_clients_info)(char *buf, char **start, off_t offset,
int request, int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
int len = 0;
drm_file_t *priv;
if (offset > DRM_PROC_LIMIT) {
*eof = 1;
return 0;
}
*start = &buf[offset];
*eof = 0;
DRM_PROC_PRINT("a dev pid uid magic ioctls\n\n");
for (priv = dev->file_first; priv; priv = priv->next) {
DRM_PROC_PRINT("%c %3d %5d %5d %10u %10lu\n",
priv->authenticated ? 'y' : 'n',
priv->minor,
priv->pid,
priv->uid,
priv->magic,
priv->ioctl_count);
}
if (len > request + offset) return request;
*eof = 1;
return len - offset;
}
static int DRM(clients_info)(char *buf, char **start, off_t offset,
int request, int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
int ret;
down(&dev->struct_sem);
ret = DRM(_clients_info)(buf, start, offset, request, eof, data);
up(&dev->struct_sem);
return ret;
}
#if DRM_DEBUG_CODE
#define DRM_VMA_VERBOSE 0
static int DRM(_vma_info)(char *buf, char **start, off_t offset, int request,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
int len = 0;
drm_vma_entry_t *pt;
struct vm_area_struct *vma;
#if DRM_VMA_VERBOSE
unsigned long i;
unsigned long address;
pgd_t *pgd;
pmd_t *pmd;
pte_t *pte;
#endif
#if defined(__i386__)
unsigned int pgprot;
#endif
if (offset > DRM_PROC_LIMIT) {
*eof = 1;
return 0;
}
*start = &buf[offset];
*eof = 0;
DRM_PROC_PRINT("vma use count: %d, high_memory = %p, 0x%08lx\n",
atomic_read(&dev->vma_count),
high_memory, virt_to_phys(high_memory));
for (pt = dev->vmalist; pt; pt = pt->next) {
if (!(vma = pt->vma)) continue;
DRM_PROC_PRINT("\n%5d 0x%08lx-0x%08lx %c%c%c%c%c%c 0x%08lx",
pt->pid,
vma->vm_start,
vma->vm_end,
vma->vm_flags & VM_READ ? 'r' : '-',
vma->vm_flags & VM_WRITE ? 'w' : '-',
vma->vm_flags & VM_EXEC ? 'x' : '-',
vma->vm_flags & VM_MAYSHARE ? 's' : 'p',
vma->vm_flags & VM_LOCKED ? 'l' : '-',
vma->vm_flags & VM_IO ? 'i' : '-',
VM_OFFSET(vma));
#if defined(__i386__)
pgprot = pgprot_val(vma->vm_page_prot);
DRM_PROC_PRINT(" %c%c%c%c%c%c%c%c%c",
pgprot & _PAGE_PRESENT ? 'p' : '-',
pgprot & _PAGE_RW ? 'w' : 'r',
pgprot & _PAGE_USER ? 'u' : 's',
pgprot & _PAGE_PWT ? 't' : 'b',
pgprot & _PAGE_PCD ? 'u' : 'c',
pgprot & _PAGE_ACCESSED ? 'a' : '-',
pgprot & _PAGE_DIRTY ? 'd' : '-',
pgprot & _PAGE_PSE ? 'm' : 'k',
pgprot & _PAGE_GLOBAL ? 'g' : 'l' );
#endif
DRM_PROC_PRINT("\n");
#if 0
for (i = vma->vm_start; i < vma->vm_end; i += PAGE_SIZE) {
pgd = pgd_offset(vma->vm_mm, i);
pmd = pmd_offset(pgd, i);
preempt_disable();
pte = pte_offset_map(pmd, i);
if (pte_present(*pte)) {
address = __pa(pte_page(*pte))
+ (i & (PAGE_SIZE-1));
DRM_PROC_PRINT(" 0x%08lx -> 0x%08lx"
" %c%c%c%c%c\n",
i,
address,
pte_read(*pte) ? 'r' : '-',
pte_write(*pte) ? 'w' : '-',
pte_exec(*pte) ? 'x' : '-',
pte_dirty(*pte) ? 'd' : '-',
pte_young(*pte) ? 'a' : '-' );
} else {
DRM_PROC_PRINT(" 0x%08lx\n", i);
}
pte_unmap(pte);
preempt_enable();
}
#endif
}
if (len > request + offset) return request;
*eof = 1;
return len - offset;
}
static int DRM(vma_info)(char *buf, char **start, off_t offset, int request,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
int ret;
down(&dev->struct_sem);
ret = DRM(_vma_info)(buf, start, offset, request, eof, data);
up(&dev->struct_sem);
return ret;
}
#endif
#if __HAVE_DMA_HISTOGRAM
static int DRM(_histo_info)(char *buf, char **start, off_t offset, int request,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
int len = 0;
drm_device_dma_t *dma = dev->dma;
int i;
unsigned long slot_value = DRM_DMA_HISTOGRAM_INITIAL;
unsigned long prev_value = 0;
drm_buf_t *buffer;
if (offset > DRM_PROC_LIMIT) {
*eof = 1;
return 0;
}
*start = &buf[offset];
*eof = 0;
DRM_PROC_PRINT("general statistics:\n");
DRM_PROC_PRINT("total %10u\n", atomic_read(&dev->histo.total));
DRM_PROC_PRINT("open %10u\n",
atomic_read(&dev->counts[_DRM_STAT_OPENS]));
DRM_PROC_PRINT("close %10u\n",
atomic_read(&dev->counts[_DRM_STAT_CLOSES]));
DRM_PROC_PRINT("ioctl %10u\n",
atomic_read(&dev->counts[_DRM_STAT_IOCTLS]));
DRM_PROC_PRINT("\nlock statistics:\n");
DRM_PROC_PRINT("locks %10u\n",
atomic_read(&dev->counts[_DRM_STAT_LOCKS]));
DRM_PROC_PRINT("unlocks %10u\n",
atomic_read(&dev->counts[_DRM_STAT_UNLOCKS]));
if (dma) {
#if 0
DRM_PROC_PRINT("\ndma statistics:\n");
DRM_PROC_PRINT("prio %10u\n",
atomic_read(&dma->total_prio));
DRM_PROC_PRINT("bytes %10u\n",
atomic_read(&dma->total_bytes));
DRM_PROC_PRINT("dmas %10u\n",
atomic_read(&dma->total_dmas));
DRM_PROC_PRINT("missed:\n");
DRM_PROC_PRINT(" dma %10u\n",
atomic_read(&dma->total_missed_dma));
DRM_PROC_PRINT(" lock %10u\n",
atomic_read(&dma->total_missed_lock));
DRM_PROC_PRINT(" free %10u\n",
atomic_read(&dma->total_missed_free));
DRM_PROC_PRINT(" sched %10u\n",
atomic_read(&dma->total_missed_sched));
DRM_PROC_PRINT("tried %10u\n",
atomic_read(&dma->total_tried));
DRM_PROC_PRINT("hit %10u\n",
atomic_read(&dma->total_hit));
DRM_PROC_PRINT("lost %10u\n",
atomic_read(&dma->total_lost));
#endif
buffer = dma->next_buffer;
if (buffer) {
DRM_PROC_PRINT("next_buffer %7d\n", buffer->idx);
} else {
DRM_PROC_PRINT("next_buffer none\n");
}
buffer = dma->this_buffer;
if (buffer) {
DRM_PROC_PRINT("this_buffer %7d\n", buffer->idx);
} else {
DRM_PROC_PRINT("this_buffer none\n");
}
}
DRM_PROC_PRINT("\nvalues:\n");
if (dev->lock.hw_lock) {
DRM_PROC_PRINT("lock 0x%08x\n",
dev->lock.hw_lock->lock);
} else {
DRM_PROC_PRINT("lock none\n");
}
DRM_PROC_PRINT("context_flag 0x%08lx\n", dev->context_flag);
DRM_PROC_PRINT("interrupt_flag 0x%08lx\n", dev->interrupt_flag);
DRM_PROC_PRINT("dma_flag 0x%08lx\n", dev->dma_flag);
DRM_PROC_PRINT("queue_count %10d\n", dev->queue_count);
DRM_PROC_PRINT("last_context %10d\n", dev->last_context);
DRM_PROC_PRINT("last_switch %10lu\n", dev->last_switch);
DRM_PROC_PRINT("last_checked %10d\n", dev->last_checked);
DRM_PROC_PRINT("\n q2d d2c c2f"
" q2c q2f dma sch"
" ctx lacq lhld\n\n");
for (i = 0; i < DRM_DMA_HISTOGRAM_SLOTS; i++) {
DRM_PROC_PRINT("%s %10lu %10u %10u %10u %10u %10u"
" %10u %10u %10u %10u %10u\n",
i == DRM_DMA_HISTOGRAM_SLOTS - 1 ? ">=" : "< ",
i == DRM_DMA_HISTOGRAM_SLOTS - 1
? prev_value : slot_value ,
atomic_read(&dev->histo
.queued_to_dispatched[i]),
atomic_read(&dev->histo
.dispatched_to_completed[i]),
atomic_read(&dev->histo
.completed_to_freed[i]),
atomic_read(&dev->histo
.queued_to_completed[i]),
atomic_read(&dev->histo
.queued_to_freed[i]),
atomic_read(&dev->histo.dma[i]),
atomic_read(&dev->histo.schedule[i]),
atomic_read(&dev->histo.ctx[i]),
atomic_read(&dev->histo.lacq[i]),
atomic_read(&dev->histo.lhld[i]));
prev_value = slot_value;
slot_value = DRM_DMA_HISTOGRAM_NEXT(slot_value);
}
if (len > request + offset) return request;
*eof = 1;
return len - offset;
}
static int DRM(histo_info)(char *buf, char **start, off_t offset, int request,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
int ret;
down(&dev->struct_sem);
ret = DRM(_histo_info)(buf, start, offset, request, eof, data);
up(&dev->struct_sem);
return ret;
}
#endif
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