250 lines
7.1 KiB
C
250 lines
7.1 KiB
C
/* -*- mode: c; c-basic-offset: 8 -*- */
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/*
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* MCA bus support functions for the proc fs.
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*
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* NOTE: this code *requires* the legacy MCA api.
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*
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* Legacy API means the API that operates in terms of MCA slot number
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*
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* (C) 2002 James Bottomley <James.Bottomley@HansenPartnership.com>
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*
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**-----------------------------------------------------------------------------
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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**
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**-----------------------------------------------------------------------------
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/proc_fs.h>
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#include <linux/mca.h>
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static int get_mca_info_helper(struct mca_device *mca_dev, char *page, int len)
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{
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int j;
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for(j=0; j<8; j++)
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len += sprintf(page+len, "%02x ",
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mca_dev ? mca_dev->pos[j] : 0xff);
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len += sprintf(page+len, " %s\n", mca_dev ? mca_dev->name : "");
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return len;
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}
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static int get_mca_info(char *page, char **start, off_t off,
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int count, int *eof, void *data)
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{
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int i, len = 0;
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if(MCA_bus) {
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struct mca_device *mca_dev;
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/* Format POS registers of eight MCA slots */
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for(i=0; i<MCA_MAX_SLOT_NR; i++) {
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mca_dev = mca_find_device_by_slot(i);
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len += sprintf(page+len, "Slot %d: ", i+1);
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len = get_mca_info_helper(mca_dev, page, len);
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}
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/* Format POS registers of integrated video subsystem */
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mca_dev = mca_find_device_by_slot(MCA_INTEGVIDEO);
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len += sprintf(page+len, "Video : ");
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len = get_mca_info_helper(mca_dev, page, len);
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/* Format POS registers of integrated SCSI subsystem */
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mca_dev = mca_find_device_by_slot(MCA_INTEGSCSI);
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len += sprintf(page+len, "SCSI : ");
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len = get_mca_info_helper(mca_dev, page, len);
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/* Format POS registers of motherboard */
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mca_dev = mca_find_device_by_slot(MCA_MOTHERBOARD);
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len += sprintf(page+len, "Planar: ");
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len = get_mca_info_helper(mca_dev, page, len);
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} else {
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/* Leave it empty if MCA not detected - this should *never*
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* happen!
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*/
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}
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if (len <= off+count) *eof = 1;
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*start = page + off;
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len -= off;
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if (len>count) len = count;
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if (len<0) len = 0;
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return len;
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}
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/*--------------------------------------------------------------------*/
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static int mca_default_procfn(char* buf, struct mca_device *mca_dev)
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{
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int len = 0, i;
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int slot = mca_dev->slot;
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/* Print out the basic information */
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if(slot < MCA_MAX_SLOT_NR) {
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len += sprintf(buf+len, "Slot: %d\n", slot+1);
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} else if(slot == MCA_INTEGSCSI) {
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len += sprintf(buf+len, "Integrated SCSI Adapter\n");
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} else if(slot == MCA_INTEGVIDEO) {
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len += sprintf(buf+len, "Integrated Video Adapter\n");
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} else if(slot == MCA_MOTHERBOARD) {
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len += sprintf(buf+len, "Motherboard\n");
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}
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if (mca_dev->name[0]) {
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/* Drivers might register a name without /proc handler... */
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len += sprintf(buf+len, "Adapter Name: %s\n",
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mca_dev->name);
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} else {
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len += sprintf(buf+len, "Adapter Name: Unknown\n");
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}
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len += sprintf(buf+len, "Id: %02x%02x\n",
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mca_dev->pos[1], mca_dev->pos[0]);
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len += sprintf(buf+len, "Enabled: %s\nPOS: ",
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mca_device_status(mca_dev) == MCA_ADAPTER_NORMAL ?
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"Yes" : "No");
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for(i=0; i<8; i++) {
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len += sprintf(buf+len, "%02x ", mca_dev->pos[i]);
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}
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len += sprintf(buf+len, "\nDriver Installed: %s",
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mca_device_claimed(mca_dev) ? "Yes" : "No");
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buf[len++] = '\n';
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buf[len] = 0;
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return len;
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} /* mca_default_procfn() */
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static int get_mca_machine_info(char* page, char **start, off_t off,
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int count, int *eof, void *data)
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{
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int len = 0;
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len += sprintf(page+len, "Model Id: 0x%x\n", machine_id);
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len += sprintf(page+len, "Submodel Id: 0x%x\n", machine_submodel_id);
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len += sprintf(page+len, "BIOS Revision: 0x%x\n", BIOS_revision);
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if (len <= off+count) *eof = 1;
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*start = page + off;
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len -= off;
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if (len>count) len = count;
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if (len<0) len = 0;
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return len;
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}
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static int mca_read_proc(char *page, char **start, off_t off,
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int count, int *eof, void *data)
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{
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struct mca_device *mca_dev = (struct mca_device *)data;
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int len = 0;
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/* Get the standard info */
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len = mca_default_procfn(page, mca_dev);
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/* Do any device-specific processing, if there is any */
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if(mca_dev->procfn) {
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len += mca_dev->procfn(page+len, mca_dev->slot,
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mca_dev->proc_dev);
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}
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if (len <= off+count) *eof = 1;
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*start = page + off;
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len -= off;
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if (len>count) len = count;
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if (len<0) len = 0;
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return len;
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} /* mca_read_proc() */
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/*--------------------------------------------------------------------*/
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void __init mca_do_proc_init(void)
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{
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int i;
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struct proc_dir_entry *proc_mca;
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struct proc_dir_entry* node = NULL;
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struct mca_device *mca_dev;
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proc_mca = proc_mkdir("mca", &proc_root);
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create_proc_read_entry("pos",0,proc_mca,get_mca_info,NULL);
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create_proc_read_entry("machine",0,proc_mca,get_mca_machine_info,NULL);
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/* Initialize /proc/mca entries for existing adapters */
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for(i = 0; i < MCA_NUMADAPTERS; i++) {
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enum MCA_AdapterStatus status;
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mca_dev = mca_find_device_by_slot(i);
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if(!mca_dev)
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continue;
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mca_dev->procfn = NULL;
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if(i < MCA_MAX_SLOT_NR) sprintf(mca_dev->procname,"slot%d", i+1);
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else if(i == MCA_INTEGVIDEO) sprintf(mca_dev->procname,"video");
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else if(i == MCA_INTEGSCSI) sprintf(mca_dev->procname,"scsi");
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else if(i == MCA_MOTHERBOARD) sprintf(mca_dev->procname,"planar");
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status = mca_device_status(mca_dev);
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if (status != MCA_ADAPTER_NORMAL &&
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status != MCA_ADAPTER_DISABLED)
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continue;
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node = create_proc_read_entry(mca_dev->procname, 0, proc_mca,
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mca_read_proc, (void *)mca_dev);
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if(node == NULL) {
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printk("Failed to allocate memory for MCA proc-entries!");
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return;
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}
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}
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} /* mca_do_proc_init() */
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/**
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* mca_set_adapter_procfn - Set the /proc callback
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* @slot: slot to configure
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* @procfn: callback function to call for /proc
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* @dev: device information passed to the callback
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*
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* This sets up an information callback for /proc/mca/slot?. The
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* function is called with the buffer, slot, and device pointer (or
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* some equally informative context information, or nothing, if you
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* prefer), and is expected to put useful information into the
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* buffer. The adapter name, ID, and POS registers get printed
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* before this is called though, so don't do it again.
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*
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* This should be called with a %NULL @procfn when a module
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* unregisters, thus preventing kernel crashes and other such
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* nastiness.
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*/
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void mca_set_adapter_procfn(int slot, MCA_ProcFn procfn, void* proc_dev)
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{
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struct mca_device *mca_dev = mca_find_device_by_slot(slot);
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if(!mca_dev)
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return;
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mca_dev->procfn = procfn;
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mca_dev->proc_dev = proc_dev;
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}
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EXPORT_SYMBOL(mca_set_adapter_procfn);
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