PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refs
[linux-2.6.git] / 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/module.h>
30 #include <linux/kernel.h>
31 #include <linux/types.h>
32 #include <linux/pci.h>
33 #include "shpchp.h"
34
35
36 /* A few routines that create sysfs entries for the hot plug controller */
37
38 static ssize_t show_ctrl (struct device *dev, struct device_attribute *attr, char *buf)
39 {
40         struct pci_dev *pdev;
41         char * out = buf;
42         int index, busnr;
43         struct resource *res;
44         struct pci_bus *bus;
45
46         pdev = container_of (dev, struct pci_dev, dev);
47         bus = pdev->subordinate;
48
49         out += sprintf(buf, "Free resources: memory\n");
50         pci_bus_for_each_resource(bus, res, index) {
51                 if (res && (res->flags & IORESOURCE_MEM) &&
52                                 !(res->flags & IORESOURCE_PREFETCH)) {
53                         out += sprintf(out, "start = %8.8llx, "
54                                         "length = %8.8llx\n",
55                                         (unsigned long long)res->start,
56                                         (unsigned long long)(res->end - res->start));
57                 }
58         }
59         out += sprintf(out, "Free resources: prefetchable memory\n");
60         pci_bus_for_each_resource(bus, res, index) {
61                 if (res && (res->flags & IORESOURCE_MEM) &&
62                                (res->flags & IORESOURCE_PREFETCH)) {
63                         out += sprintf(out, "start = %8.8llx, "
64                                         "length = %8.8llx\n",
65                                         (unsigned long long)res->start,
66                                         (unsigned long long)(res->end - res->start));
67                 }
68         }
69         out += sprintf(out, "Free resources: IO\n");
70         pci_bus_for_each_resource(bus, res, index) {
71                 if (res && (res->flags & IORESOURCE_IO)) {
72                         out += sprintf(out, "start = %8.8llx, "
73                                         "length = %8.8llx\n",
74                                         (unsigned long long)res->start,
75                                         (unsigned long long)(res->end - res->start));
76                 }
77         }
78         out += sprintf(out, "Free resources: bus numbers\n");
79         for (busnr = bus->secondary; busnr <= bus->subordinate; busnr++) {
80                 if (!pci_find_bus(pci_domain_nr(bus), busnr))
81                         break;
82         }
83         if (busnr < bus->subordinate)
84                 out += sprintf(out, "start = %8.8x, length = %8.8x\n",
85                                 busnr, (bus->subordinate - busnr));
86
87         return out - buf;
88 }
89 static DEVICE_ATTR (ctrl, S_IRUGO, show_ctrl, NULL);
90
91 int __must_check shpchp_create_ctrl_files (struct controller *ctrl)
92 {
93         return device_create_file (&ctrl->pci_dev->dev, &dev_attr_ctrl);
94 }
95
96 void shpchp_remove_ctrl_files(struct controller *ctrl)
97 {
98         device_remove_file(&ctrl->pci_dev->dev, &dev_attr_ctrl);
99 }