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android_kernel_xiaomi_sm8350/drivers/char/drm/drm_proc.c
Dave Airlie d1f2b55ad2 drm: updated DRM map patch for 32/64 bit systems 
I basically combined Paul's patches with additions that I had made
for PCI scatter gather.
I also tried more carefully to avoid problems with the same token
assigned multiple times while trying to use the base address in the
token if possible to gain as much backward compatibility as possible
for broken DRI clients.

From: Paul Mackerras <paulus@samba.org> and Egbert Eich <eich@suse.de>
Signed-off-by: Dave Airlie <airlied@linux.ie>
2005-08-05 22:11:22 +10:00

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/**
* \file drm_proc.h
* /proc support for DRM
*
* \author Rickard E. (Rik) Faith <faith@valinux.com>
* \author Gareth Hughes <gareth@valinux.com>
*
* \par 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.
*/
/*
* 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.
*/
#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
/**
* Proc file list.
*/
static struct drm_proc_list {
const char *name; /**< file name */
int (*f)(char *, char **, off_t, int, int *, void *); /**< proc callback*/
} 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
};
#define DRM_PROC_ENTRIES (sizeof(drm_proc_list)/sizeof(drm_proc_list[0]))
/**
* Initialize the DRI proc filesystem for a device.
*
* \param dev DRM device.
* \param minor device minor number.
* \param root DRI proc dir entry.
* \param dev_root resulting DRI device proc dir entry.
* \return root entry pointer on success, or NULL on failure.
*
* Create the DRI proc root entry "/proc/dri", the device proc root entry
* "/proc/dri/%minor%/", and each entry in proc_list as
* "/proc/dri/%minor%/%name%".
*/
int 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];
sprintf(name, "%d", minor);
*dev_root = create_proc_entry(name, S_IFDIR, root);
if (!*dev_root) {
DRM_ERROR("Cannot create /proc/dri/%s\n", name);
return -1;
}
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);
return -1;
}
ent->read_proc = drm_proc_list[i].f;
ent->data = dev;
}
return 0;
}
/**
* Cleanup the proc filesystem resources.
*
* \param minor device minor number.
* \param root DRI proc dir entry.
* \param dev_root DRI device proc dir entry.
* \return always zero.
*
* Remove all proc entries created by proc_init().
*/
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);
return 0;
}
/**
* Called when "/proc/dri/.../name" is read.
*
* \param buf output buffer.
* \param start start of output data.
* \param offset requested start offset.
* \param request requested number of bytes.
* \param eof whether there is no more data to return.
* \param data private data.
* \return number of written bytes.
*
* Prints the device name together with the bus id if available.
*/
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 %s %s\n",
dev->driver->pci_driver.name, pci_name(dev->pdev), dev->unique);
} else {
DRM_PROC_PRINT("%s %s\n", dev->driver->pci_driver.name, pci_name(dev->pdev));
}
if (len > request + offset) return request;
*eof = 1;
return len - offset;
}
/**
* Called when "/proc/dri/.../vm" is read.
*
* \param buf output buffer.
* \param start start of output data.
* \param offset requested start offset.
* \param request requested number of bytes.
* \param eof whether there is no more data to return.
* \param data private data.
* \return number of written bytes.
*
* Prints information about all mappings in drm_device::maplist.
*/
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, _DRM_AGP, and
_DRM_SCATTER_GATHER and _DRM_CONSISTENT */
const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" };
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 = list_entry(list, drm_map_list_t, head);
map = r_list->map;
if(!map)
continue;
if (map->type < 0 || map->type > 5)
type = "??";
else
type = types[map->type];
DRM_PROC_PRINT("%4d 0x%08lx 0x%08lx %4.4s 0x%02x 0x%08x ",
i,
map->offset,
map->size,
type,
map->flags,
r_list->user_token);
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;
}
/**
* Simply calls _vm_info() while holding the drm_device::struct_sem lock.
*/
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;
}
/**
* Called when "/proc/dri/.../queues" is read.
*
* \param buf output buffer.
* \param start start of output data.
* \param offset requested start offset.
* \param request requested number of bytes.
* \param eof whether there is no more data to return.
* \param data private data.
* \return number of written bytes.
*/
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;
}
/**
* Simply calls _queues_info() while holding the drm_device::struct_sem lock.
*/
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;
}
/**
* Called when "/proc/dri/.../bufs" is read.
*
* \param buf output buffer.
* \param start start of output data.
* \param offset requested start offset.
* \param request requested number of bytes.
* \param eof whether there is no more data to return.
* \param data private data.
* \return number of written bytes.
*/
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;
}
/**
* Simply calls _bufs_info() while holding the drm_device::struct_sem lock.
*/
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;
}
/**
* Called when "/proc/dri/.../clients" is read.
*
* \param buf output buffer.
* \param start start of output data.
* \param offset requested start offset.
* \param request requested number of bytes.
* \param eof whether there is no more data to return.
* \param data private data.
* \return number of written bytes.
*/
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;
}
/**
* Simply calls _clients_info() while holding the drm_device::struct_sem lock.
*/
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
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 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 (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
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