551 lines
14 KiB
C
551 lines
14 KiB
C
/**
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* \file drm_proc.c
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* /proc support for DRM
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*
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* \author Rickard E. (Rik) Faith <faith@valinux.com>
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* \author Gareth Hughes <gareth@valinux.com>
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*
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* \par Acknowledgements:
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* Matthew J Sottek <matthew.j.sottek@intel.com> sent in a patch to fix
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* the problem with the proc files not outputting all their information.
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*/
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/*
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* Created: Mon Jan 11 09:48:47 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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#include "drmP.h"
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static int drm_name_info(char *buf, char **start, off_t offset,
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int request, int *eof, void *data);
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static int drm_vm_info(char *buf, char **start, off_t offset,
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int request, int *eof, void *data);
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static int drm_clients_info(char *buf, char **start, off_t offset,
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int request, int *eof, void *data);
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static int drm_queues_info(char *buf, char **start, off_t offset,
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int request, int *eof, void *data);
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static int drm_bufs_info(char *buf, char **start, off_t offset,
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int request, int *eof, void *data);
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#if DRM_DEBUG_CODE
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static int drm_vma_info(char *buf, char **start, off_t offset,
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int request, int *eof, void *data);
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#endif
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/**
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* Proc file list.
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*/
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static struct drm_proc_list {
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const char *name; /**< file name */
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int (*f) (char *, char **, off_t, int, int *, void *); /**< proc callback*/
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} drm_proc_list[] = {
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{
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"name", drm_name_info}, {
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"mem", drm_mem_info}, {
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"vm", drm_vm_info}, {
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"clients", drm_clients_info}, {
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"queues", drm_queues_info}, {
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"bufs", drm_bufs_info},
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#if DRM_DEBUG_CODE
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{
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"vma", drm_vma_info},
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#endif
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};
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#define DRM_PROC_ENTRIES (sizeof(drm_proc_list)/sizeof(drm_proc_list[0]))
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/**
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* Initialize the DRI proc filesystem for a device.
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*
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* \param dev DRM device.
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* \param minor device minor number.
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* \param root DRI proc dir entry.
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* \param dev_root resulting DRI device proc dir entry.
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* \return root entry pointer on success, or NULL on failure.
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*
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* Create the DRI proc root entry "/proc/dri", the device proc root entry
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* "/proc/dri/%minor%/", and each entry in proc_list as
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* "/proc/dri/%minor%/%name%".
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*/
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int drm_proc_init(drm_device_t * dev, int minor,
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struct proc_dir_entry *root, struct proc_dir_entry **dev_root)
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{
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struct proc_dir_entry *ent;
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int i, j;
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char name[64];
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sprintf(name, "%d", minor);
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*dev_root = proc_mkdir(name, root);
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if (!*dev_root) {
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DRM_ERROR("Cannot create /proc/dri/%s\n", name);
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return -1;
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}
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for (i = 0; i < DRM_PROC_ENTRIES; i++) {
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ent = create_proc_entry(drm_proc_list[i].name,
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S_IFREG | S_IRUGO, *dev_root);
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if (!ent) {
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DRM_ERROR("Cannot create /proc/dri/%s/%s\n",
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name, drm_proc_list[i].name);
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for (j = 0; j < i; j++)
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remove_proc_entry(drm_proc_list[i].name,
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*dev_root);
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remove_proc_entry(name, root);
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return -1;
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}
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ent->read_proc = drm_proc_list[i].f;
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ent->data = dev;
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}
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return 0;
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}
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/**
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* Cleanup the proc filesystem resources.
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*
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* \param minor device minor number.
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* \param root DRI proc dir entry.
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* \param dev_root DRI device proc dir entry.
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* \return always zero.
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*
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* Remove all proc entries created by proc_init().
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*/
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int drm_proc_cleanup(int minor, struct proc_dir_entry *root,
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struct proc_dir_entry *dev_root)
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{
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int i;
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char name[64];
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if (!root || !dev_root)
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return 0;
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for (i = 0; i < DRM_PROC_ENTRIES; i++)
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remove_proc_entry(drm_proc_list[i].name, dev_root);
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sprintf(name, "%d", minor);
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remove_proc_entry(name, root);
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return 0;
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}
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/**
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* Called when "/proc/dri/.../name" is read.
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*
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* \param buf output buffer.
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* \param start start of output data.
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* \param offset requested start offset.
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* \param request requested number of bytes.
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* \param eof whether there is no more data to return.
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* \param data private data.
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* \return number of written bytes.
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*
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* Prints the device name together with the bus id if available.
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*/
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static int drm_name_info(char *buf, char **start, off_t offset, int request,
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int *eof, void *data)
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{
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drm_device_t *dev = (drm_device_t *) data;
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int len = 0;
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if (offset > DRM_PROC_LIMIT) {
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*eof = 1;
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return 0;
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}
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*start = &buf[offset];
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*eof = 0;
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if (dev->unique) {
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DRM_PROC_PRINT("%s %s %s\n",
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dev->driver->pci_driver.name,
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pci_name(dev->pdev), dev->unique);
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} else {
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DRM_PROC_PRINT("%s %s\n", dev->driver->pci_driver.name,
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pci_name(dev->pdev));
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}
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if (len > request + offset)
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return request;
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*eof = 1;
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return len - offset;
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}
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/**
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* Called when "/proc/dri/.../vm" is read.
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*
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* \param buf output buffer.
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* \param start start of output data.
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* \param offset requested start offset.
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* \param request requested number of bytes.
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* \param eof whether there is no more data to return.
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* \param data private data.
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* \return number of written bytes.
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*
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* Prints information about all mappings in drm_device::maplist.
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*/
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static int drm__vm_info(char *buf, char **start, off_t offset, int request,
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int *eof, void *data)
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{
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drm_device_t *dev = (drm_device_t *) data;
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int len = 0;
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drm_map_t *map;
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drm_map_list_t *r_list;
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struct list_head *list;
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/* Hardcoded from _DRM_FRAME_BUFFER,
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_DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and
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_DRM_SCATTER_GATHER and _DRM_CONSISTENT */
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const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" };
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const char *type;
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int i;
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if (offset > DRM_PROC_LIMIT) {
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*eof = 1;
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return 0;
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}
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*start = &buf[offset];
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*eof = 0;
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DRM_PROC_PRINT("slot offset size type flags "
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"address mtrr\n\n");
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i = 0;
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if (dev->maplist != NULL)
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list_for_each(list, &dev->maplist->head) {
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r_list = list_entry(list, drm_map_list_t, head);
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map = r_list->map;
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if (!map)
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continue;
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if (map->type < 0 || map->type > 5)
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type = "??";
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else
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type = types[map->type];
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DRM_PROC_PRINT("%4d 0x%08lx 0x%08lx %4.4s 0x%02x 0x%08x ",
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i,
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map->offset,
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map->size, type, map->flags, r_list->user_token);
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if (map->mtrr < 0) {
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DRM_PROC_PRINT("none\n");
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} else {
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DRM_PROC_PRINT("%4d\n", map->mtrr);
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}
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i++;
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}
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if (len > request + offset)
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return request;
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*eof = 1;
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return len - offset;
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}
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/**
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* Simply calls _vm_info() while holding the drm_device::struct_sem lock.
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*/
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static int drm_vm_info(char *buf, char **start, off_t offset, int request,
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int *eof, void *data)
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{
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drm_device_t *dev = (drm_device_t *) data;
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int ret;
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down(&dev->struct_sem);
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ret = drm__vm_info(buf, start, offset, request, eof, data);
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up(&dev->struct_sem);
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return ret;
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}
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/**
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* Called when "/proc/dri/.../queues" is read.
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*
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* \param buf output buffer.
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* \param start start of output data.
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* \param offset requested start offset.
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* \param request requested number of bytes.
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* \param eof whether there is no more data to return.
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* \param data private data.
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* \return number of written bytes.
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*/
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static int drm__queues_info(char *buf, char **start, off_t offset,
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int request, int *eof, void *data)
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{
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drm_device_t *dev = (drm_device_t *) data;
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int len = 0;
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int i;
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drm_queue_t *q;
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if (offset > DRM_PROC_LIMIT) {
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*eof = 1;
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return 0;
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}
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*start = &buf[offset];
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*eof = 0;
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DRM_PROC_PRINT(" ctx/flags use fin"
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" blk/rw/rwf wait flushed queued"
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" locks\n\n");
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for (i = 0; i < dev->queue_count; i++) {
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q = dev->queuelist[i];
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atomic_inc(&q->use_count);
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DRM_PROC_PRINT_RET(atomic_dec(&q->use_count),
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"%5d/0x%03x %5d %5d"
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" %5d/%c%c/%c%c%c %5Zd\n",
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i,
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q->flags,
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atomic_read(&q->use_count),
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atomic_read(&q->finalization),
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atomic_read(&q->block_count),
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atomic_read(&q->block_read) ? 'r' : '-',
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atomic_read(&q->block_write) ? 'w' : '-',
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waitqueue_active(&q->read_queue) ? 'r' : '-',
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waitqueue_active(&q->
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write_queue) ? 'w' : '-',
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waitqueue_active(&q->
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flush_queue) ? 'f' : '-',
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DRM_BUFCOUNT(&q->waitlist));
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atomic_dec(&q->use_count);
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}
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if (len > request + offset)
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return request;
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*eof = 1;
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return len - offset;
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}
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/**
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* Simply calls _queues_info() while holding the drm_device::struct_sem lock.
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*/
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static int drm_queues_info(char *buf, char **start, off_t offset, int request,
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int *eof, void *data)
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{
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drm_device_t *dev = (drm_device_t *) data;
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int ret;
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down(&dev->struct_sem);
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ret = drm__queues_info(buf, start, offset, request, eof, data);
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up(&dev->struct_sem);
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return ret;
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}
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/**
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* Called when "/proc/dri/.../bufs" is read.
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*
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* \param buf output buffer.
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* \param start start of output data.
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* \param offset requested start offset.
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* \param request requested number of bytes.
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* \param eof whether there is no more data to return.
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* \param data private data.
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* \return number of written bytes.
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*/
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static int drm__bufs_info(char *buf, char **start, off_t offset, int request,
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int *eof, void *data)
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{
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drm_device_t *dev = (drm_device_t *) data;
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int len = 0;
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drm_device_dma_t *dma = dev->dma;
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int i;
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if (!dma || offset > DRM_PROC_LIMIT) {
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*eof = 1;
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return 0;
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}
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*start = &buf[offset];
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*eof = 0;
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DRM_PROC_PRINT(" o size count free segs pages kB\n\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_PROC_PRINT("%2d %8d %5d %5d %5d %5d %5ld\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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* PAGE_SIZE / 1024);
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}
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DRM_PROC_PRINT("\n");
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for (i = 0; i < dma->buf_count; i++) {
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if (i && !(i % 32))
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DRM_PROC_PRINT("\n");
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DRM_PROC_PRINT(" %d", dma->buflist[i]->list);
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}
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DRM_PROC_PRINT("\n");
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if (len > request + offset)
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return request;
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*eof = 1;
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return len - offset;
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}
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/**
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* Simply calls _bufs_info() while holding the drm_device::struct_sem lock.
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*/
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static int drm_bufs_info(char *buf, char **start, off_t offset, int request,
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int *eof, void *data)
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{
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drm_device_t *dev = (drm_device_t *) data;
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int ret;
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down(&dev->struct_sem);
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ret = drm__bufs_info(buf, start, offset, request, eof, data);
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up(&dev->struct_sem);
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return ret;
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}
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/**
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* Called when "/proc/dri/.../clients" is read.
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*
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* \param buf output buffer.
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* \param start start of output data.
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* \param offset requested start offset.
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* \param request requested number of bytes.
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* \param eof whether there is no more data to return.
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* \param data private data.
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* \return number of written bytes.
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*/
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static int drm__clients_info(char *buf, char **start, off_t offset,
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int request, int *eof, void *data)
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{
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drm_device_t *dev = (drm_device_t *) data;
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int len = 0;
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drm_file_t *priv;
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if (offset > DRM_PROC_LIMIT) {
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*eof = 1;
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return 0;
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}
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*start = &buf[offset];
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*eof = 0;
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DRM_PROC_PRINT("a dev pid uid magic ioctls\n\n");
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for (priv = dev->file_first; priv; priv = priv->next) {
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DRM_PROC_PRINT("%c %3d %5d %5d %10u %10lu\n",
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priv->authenticated ? 'y' : 'n',
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priv->minor,
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priv->pid,
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priv->uid, priv->magic, priv->ioctl_count);
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}
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if (len > request + offset)
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return request;
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*eof = 1;
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return len - offset;
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}
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/**
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* Simply calls _clients_info() while holding the drm_device::struct_sem lock.
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*/
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static int drm_clients_info(char *buf, char **start, off_t offset,
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int request, int *eof, void *data)
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{
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drm_device_t *dev = (drm_device_t *) data;
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int ret;
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down(&dev->struct_sem);
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ret = drm__clients_info(buf, start, offset, request, eof, data);
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up(&dev->struct_sem);
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return ret;
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}
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#if DRM_DEBUG_CODE
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static int drm__vma_info(char *buf, char **start, off_t offset, int request,
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int *eof, void *data)
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{
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drm_device_t *dev = (drm_device_t *) data;
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int len = 0;
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drm_vma_entry_t *pt;
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struct vm_area_struct *vma;
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#if defined(__i386__)
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unsigned int pgprot;
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#endif
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if (offset > DRM_PROC_LIMIT) {
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*eof = 1;
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return 0;
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}
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*start = &buf[offset];
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*eof = 0;
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DRM_PROC_PRINT("vma use count: %d, high_memory = %p, 0x%08lx\n",
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atomic_read(&dev->vma_count),
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high_memory, virt_to_phys(high_memory));
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for (pt = dev->vmalist; pt; pt = pt->next) {
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if (!(vma = pt->vma))
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continue;
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DRM_PROC_PRINT("\n%5d 0x%08lx-0x%08lx %c%c%c%c%c%c 0x%08lx",
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pt->pid,
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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
|