cpqphp_proc.c
上传用户:lgb322
上传日期:2013-02-24
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文件大小:5k
- /*
- * Compaq Hot Plug Controller Driver
- *
- * Copyright (c) 1995,2001 Compaq Computer Corporation
- * Copyright (c) 2001 Greg Kroah-Hartman (greg@kroah.com)
- * Copyright (c) 2001 IBM Corp.
- *
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for more
- * details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Send feedback to <greg@kroah.com>
- *
- */
- #include <linux/config.h>
- #include <linux/module.h>
- #include <linux/kernel.h>
- #include <linux/types.h>
- #include <linux/proc_fs.h>
- #include <linux/pci.h>
- #include "cpqphp.h"
- static struct proc_dir_entry *ctrl_proc_root;
- /* A few routines that create proc entries for the hot plug controller */
- static int read_ctrl (char *buf, char **start, off_t offset, int len, int *eof, void *data)
- {
- struct controller *ctrl = (struct controller *)data;
- char * out = buf;
- int index;
- struct pci_resource *res;
- if (offset > 0) return 0; /* no partial requests */
- len = 0;
- *eof = 1;
- out += sprintf(out, "hot plug ctrl Info Pagen");
- out += sprintf(out, "bus = %d, device = %d, function = %dn",ctrl->bus,
- ctrl->device, ctrl->function);
- out += sprintf(out, "Free resources: memoryn");
- index = 11;
- res = ctrl->mem_head;
- while (res && index--) {
- out += sprintf(out, "start = %8.8x, length = %8.8xn", res->base, res->length);
- res = res->next;
- }
- out += sprintf(out, "Free resources: prefetchable memoryn");
- index = 11;
- res = ctrl->p_mem_head;
- while (res && index--) {
- out += sprintf(out, "start = %8.8x, length = %8.8xn", res->base, res->length);
- res = res->next;
- }
- out += sprintf(out, "Free resources: IOn");
- index = 11;
- res = ctrl->io_head;
- while (res && index--) {
- out += sprintf(out, "start = %8.8x, length = %8.8xn", res->base, res->length);
- res = res->next;
- }
- out += sprintf(out, "Free resources: bus numbersn");
- index = 11;
- res = ctrl->bus_head;
- while (res && index--) {
- out += sprintf(out, "start = %8.8x, length = %8.8xn", res->base, res->length);
- res = res->next;
- }
- *start = buf;
- len = out-buf;
- return len;
- }
- static int read_dev (char *buf, char **start, off_t offset, int len, int *eof, void *data)
- {
- struct controller *ctrl = (struct controller *)data;
- char * out = buf;
- int index;
- struct pci_resource *res;
- struct pci_func *new_slot;
- struct slot *slot;
- if (offset > 0) return 0; /* no partial requests */
- len = 0;
- *eof = 1;
- out += sprintf(out, "hot plug ctrl Info Pagen");
- out += sprintf(out, "bus = %d, device = %d, function = %dn",ctrl->bus,
- ctrl->device, ctrl->function);
- slot=ctrl->slot;
- while (slot) {
- new_slot = cpqhp_slot_find(slot->bus, slot->device, 0);
- out += sprintf(out, "assigned resources: memoryn");
- index = 11;
- res = new_slot->mem_head;
- while (res && index--) {
- out += sprintf(out, "start = %8.8x, length = %8.8xn", res->base, res->length);
- res = res->next;
- }
- out += sprintf(out, "assigned resources: prefetchable memoryn");
- index = 11;
- res = new_slot->p_mem_head;
- while (res && index--) {
- out += sprintf(out, "start = %8.8x, length = %8.8xn", res->base, res->length);
- res = res->next;
- }
- out += sprintf(out, "assigned resources: IOn");
- index = 11;
- res = new_slot->io_head;
- while (res && index--) {
- out += sprintf(out, "start = %8.8x, length = %8.8xn", res->base, res->length);
- res = res->next;
- }
- out += sprintf(out, "assigned resources: bus numbersn");
- index = 11;
- res = new_slot->bus_head;
- while (res && index--) {
- out += sprintf(out, "start = %8.8x, length = %8.8xn", res->base, res->length);
- res = res->next;
- }
- slot=slot->next;
- }
- *start = buf;
- len = out-buf;
- return len;
- }
- int cpqhp_proc_create_ctrl (struct controller *ctrl)
- {
- strcpy(ctrl->proc_name, "hpca");
- ctrl->proc_name[3] = 'a' + ctrl->bus;
- ctrl->proc_entry = create_proc_entry(ctrl->proc_name, S_IFREG | S_IRUGO, ctrl_proc_root);
- ctrl->proc_entry->data = ctrl;
- ctrl->proc_entry->read_proc = &read_ctrl;
- strcpy(ctrl->proc_name2, "slot_a");
- ctrl->proc_name2[5] = 'a' + ctrl->bus;
- ctrl->proc_entry2 = create_proc_entry(ctrl->proc_name2, S_IFREG | S_IRUGO, ctrl_proc_root);
- ctrl->proc_entry2->data = ctrl;
- ctrl->proc_entry2->read_proc = &read_dev;
- return 0;
- }
- int cpqhp_proc_remove_ctrl (struct controller *ctrl)
- {
- if (ctrl->proc_entry)
- remove_proc_entry(ctrl->proc_name, ctrl_proc_root);
- if (ctrl->proc_entry2)
- remove_proc_entry(ctrl->proc_name2, ctrl_proc_root);
- return 0;
- }
-
- int cpqhp_proc_init_ctrl (void)
- {
- ctrl_proc_root = proc_mkdir("driver/hpc", NULL);
- if (!ctrl_proc_root)
- return -ENOMEM;
- ctrl_proc_root->owner = THIS_MODULE;
- return 0;
- }
- int cpqhp_proc_destroy_ctrl (void)
- {
- remove_proc_entry("hpc", proc_root_driver);
- return 0;
- }