drivers/pci/hotplug/shpchp_sysfs.c

   1 /*
   2  * Compaq Hot Plug Controller Driver
   3  *
   4  * Copyright (c) 1995,2001 Compaq Computer Corporation
   5  * Copyright (c) 2001,2003 Greg Kroah-Hartman (greg@kroah.com)
   6  * Copyright (c) 2001 IBM Corp.
   7  *
   8  * All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or (at
  13  * your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
  18  * NON INFRINGEMENT.  See the GNU General Public License for more
  19  * details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24  *
  25  * Send feedback to <greg@kroah.com>
  26  *
  27  */
  28
  29 #include <linux/config.h>
  30 #include <linux/module.h>
  31 #include <linux/kernel.h>
  32 #include <linux/types.h>
  33 #include <linux/proc_fs.h>
  34 #include <linux/workqueue.h>
  35 #include <linux/pci.h>
  36 #include "shpchp.h"
  37
  38
  39 /* A few routines that create sysfs entries for the hot plug controller */
  40
  41 static ssize_t show_ctrl (struct device *dev, char *buf)
  42 {
  43         struct pci_dev *pci_dev;
  44         struct controller *ctrl;
  45         char * out = buf;
  46         int index;
  47         struct pci_resource *res;
  48
  49         pci_dev = container_of (dev, struct pci_dev, dev);
  50         ctrl = pci_get_drvdata(pci_dev);
  51
  52         out += sprintf(buf, "Free resources: memory\n");
  53         index = 11;
  54         res = ctrl->mem_head;
  55         while (res && index--) {
  56                 out += sprintf(out, "start = %8.8x, length = %8.8x\n", res->base, res->length);
  57                 res = res->next;
  58         }
  59         out += sprintf(out, "Free resources: prefetchable memory\n");
  60         index = 11;
  61         res = ctrl->p_mem_head;
  62         while (res && index--) {
  63                 out += sprintf(out, "start = %8.8x, length = %8.8x\n", res->base, res->length);
  64                 res = res->next;
  65         }
  66         out += sprintf(out, "Free resources: IO\n");
  67         index = 11;
  68         res = ctrl->io_head;
  69         while (res && index--) {
  70                 out += sprintf(out, "start = %8.8x, length = %8.8x\n", res->base, res->length);
  71                 res = res->next;
  72         }
  73         out += sprintf(out, "Free resources: bus numbers\n");
  74         index = 11;
  75         res = ctrl->bus_head;
  76         while (res && index--) {
  77                 out += sprintf(out, "start = %8.8x, length = %8.8x\n", res->base, res->length);
  78                 res = res->next;
  79         }
  80
  81         return out - buf;
  82 }
  83 static DEVICE_ATTR (ctrl, S_IRUGO, show_ctrl, NULL);
  84
  85 static ssize_t show_dev (struct device *dev, char *buf)
  86 {
  87         struct pci_dev *pci_dev;
  88         struct controller *ctrl;
  89         char * out = buf;
  90         int index;
  91         struct pci_resource *res;
  92         struct pci_func *new_slot;
  93         struct slot *slot;
  94
  95         pci_dev = container_of (dev, struct pci_dev, dev);
  96         ctrl = pci_get_drvdata(pci_dev);
  97
  98         slot=ctrl->slot;
  99
 100         while (slot) {
 101                 new_slot = shpchp_slot_find(slot->bus, slot->device, 0);
 102                 if (!new_slot)
 103                         break;
 104                 out += sprintf(out, "assigned resources: memory\n");
 105                 index = 11;
 106                 res = new_slot->mem_head;
 107                 while (res && index--) {
 108                         out += sprintf(out, "start = %8.8x, length = %8.8x\n", res->base, res->length);
 109                         res = res->next;
 110                 }
 111                 out += sprintf(out, "assigned resources: prefetchable memory\n");
 112                 index = 11;
 113                 res = new_slot->p_mem_head;
 114                 while (res && index--) {
 115                         out += sprintf(out, "start = %8.8x, length = %8.8x\n", res->base, res->length);
 116                         res = res->next;
 117                 }
 118                 out += sprintf(out, "assigned resources: IO\n");
 119                 index = 11;
 120                 res = new_slot->io_head;
 121                 while (res && index--) {
 122                         out += sprintf(out, "start = %8.8x, length = %8.8x\n", res->base, res->length);
 123                         res = res->next;
 124                 }
 125                 out += sprintf(out, "assigned resources: bus numbers\n");
 126                 index = 11;
 127                 res = new_slot->bus_head;
 128                 while (res && index--) {
 129                         out += sprintf(out, "start = %8.8x, length = %8.8x\n", res->base, res->length);
 130                         res = res->next;
 131                 }
 132                 slot=slot->next;
 133         }
 134
 135         return out - buf;
 136 }
 137 static DEVICE_ATTR (dev, S_IRUGO, show_dev, NULL);
 138
 139 void shpchp_create_ctrl_files (struct controller *ctrl)
 140 {
 141         device_create_file (&ctrl->pci_dev->dev, &dev_attr_ctrl);
 142         device_create_file (&ctrl->pci_dev->dev, &dev_attr_dev);
 143 }