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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include <linux/module.h>
30#include <linux/kernel.h>
31#include <linux/types.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070032#include <linux/pci.h>
33#include "shpchp.h"
34
35
36/* A few routines that create sysfs entries for the hot plug controller */
37
Yani Ioannoue404e272005-05-17 06:42:58 -040038static ssize_t show_ctrl (struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -070039{
rajesh.shah@intel.comdbd7a782005-10-13 12:05:36 -070040 struct pci_dev *pdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -070041 char * out = buf;
rajesh.shah@intel.comdbd7a782005-10-13 12:05:36 -070042 int index, busnr;
43 struct resource *res;
44 struct pci_bus *bus;
Linus Torvalds1da177e2005-04-16 15:20:36 -070045
rajesh.shah@intel.comdbd7a782005-10-13 12:05:36 -070046 pdev = container_of (dev, struct pci_dev, dev);
47 bus = pdev->subordinate;
Linus Torvalds1da177e2005-04-16 15:20:36 -070048
49 out += sprintf(buf, "Free resources: memory\n");
rajesh.shah@intel.comdbd7a782005-10-13 12:05:36 -070050 for (index = 0; index < PCI_BUS_NUM_RESOURCES; index++) {
51 res = bus->resource[index];
52 if (res && (res->flags & IORESOURCE_MEM) &&
53 !(res->flags & IORESOURCE_PREFETCH)) {
54 out += sprintf(out, "start = %8.8lx, length = %8.8lx\n",
55 res->start, (res->end - res->start));
56 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070057 }
58 out += sprintf(out, "Free resources: prefetchable memory\n");
rajesh.shah@intel.comdbd7a782005-10-13 12:05:36 -070059 for (index = 0; index < PCI_BUS_NUM_RESOURCES; index++) {
60 res = bus->resource[index];
61 if (res && (res->flags & IORESOURCE_MEM) &&
62 (res->flags & IORESOURCE_PREFETCH)) {
63 out += sprintf(out, "start = %8.8lx, length = %8.8lx\n",
64 res->start, (res->end - res->start));
65 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070066 }
67 out += sprintf(out, "Free resources: IO\n");
rajesh.shah@intel.comdbd7a782005-10-13 12:05:36 -070068 for (index = 0; index < PCI_BUS_NUM_RESOURCES; index++) {
69 res = bus->resource[index];
70 if (res && (res->flags & IORESOURCE_IO)) {
71 out += sprintf(out, "start = %8.8lx, length = %8.8lx\n",
72 res->start, (res->end - res->start));
73 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070074 }
75 out += sprintf(out, "Free resources: bus numbers\n");
rajesh.shah@intel.comdbd7a782005-10-13 12:05:36 -070076 for (busnr = bus->secondary; busnr <= bus->subordinate; busnr++) {
77 if (!pci_find_bus(pci_domain_nr(bus), busnr))
78 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -070079 }
rajesh.shah@intel.comdbd7a782005-10-13 12:05:36 -070080 if (busnr < bus->subordinate)
81 out += sprintf(out, "start = %8.8x, length = %8.8x\n",
82 busnr, (bus->subordinate - busnr));
Linus Torvalds1da177e2005-04-16 15:20:36 -070083
84 return out - buf;
85}
86static DEVICE_ATTR (ctrl, S_IRUGO, show_ctrl, NULL);
87
Linus Torvalds1da177e2005-04-16 15:20:36 -070088void shpchp_create_ctrl_files (struct controller *ctrl)
89{
90 device_create_file (&ctrl->pci_dev->dev, &dev_attr_ctrl);
Linus Torvalds1da177e2005-04-16 15:20:36 -070091}
rajesh.shah@intel.comc2608a12005-10-13 12:05:44 -070092
93void shpchp_remove_ctrl_files(struct controller *ctrl)
94{
95 device_remove_file(&ctrl->pci_dev->dev, &dev_attr_ctrl);
96}