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
38static 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, length = %8.8llx\n",
54				       (unsigned long long)res->start,
55				       (unsigned long long)resource_size(res));
56		}
57	}
58	out += sprintf(out, "Free resources: prefetchable memory\n");
59	pci_bus_for_each_resource(bus, res, index) {
60		if (res && (res->flags & IORESOURCE_MEM) &&
61			       (res->flags & IORESOURCE_PREFETCH)) {
62			out += sprintf(out, "start = %8.8llx, length = %8.8llx\n",
63				       (unsigned long long)res->start,
64				       (unsigned long long)resource_size(res));
65		}
66	}
67	out += sprintf(out, "Free resources: IO\n");
68	pci_bus_for_each_resource(bus, res, index) {
69		if (res && (res->flags & IORESOURCE_IO)) {
70			out += sprintf(out, "start = %8.8llx, length = %8.8llx\n",
71				       (unsigned long long)res->start,
72				       (unsigned long long)resource_size(res));
73		}
74	}
75	out += sprintf(out, "Free resources: bus numbers\n");
76	for (busnr = bus->busn_res.start; busnr <= bus->busn_res.end; busnr++) {
77		if (!pci_find_bus(pci_domain_nr(bus), busnr))
78			break;
79	}
80	if (busnr < bus->busn_res.end)
81		out += sprintf(out, "start = %8.8x, length = %8.8x\n",
82				busnr, (int)(bus->busn_res.end - busnr));
83
84	return out - buf;
85}
86static DEVICE_ATTR (ctrl, S_IRUGO, show_ctrl, NULL);
87
88int shpchp_create_ctrl_files (struct controller *ctrl)
89{
90	return device_create_file (&ctrl->pci_dev->dev, &dev_attr_ctrl);
91}
92
93void shpchp_remove_ctrl_files(struct controller *ctrl)
94{
95	device_remove_file(&ctrl->pci_dev->dev, &dev_attr_ctrl);
96}
97