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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->secondary; busnr <= bus->subordinate; busnr++) {
77 if (!pci_find_bus(pci_domain_nr(bus), busnr))
78 break;
79 }
80 if (busnr < bus->subordinate)
81 out += sprintf(out, "start = %8.8x, length = %8.8x\n",
82 busnr, (bus->subordinate - busnr));
83
84 return out - buf;
85}
86static DEVICE_ATTR (ctrl, S_IRUGO, show_ctrl, NULL);
87
88int __must_check 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}
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Compaq Hot Plug Controller Driver
4 *
5 * Copyright (c) 1995,2001 Compaq Computer Corporation
6 * Copyright (c) 2001,2003 Greg Kroah-Hartman (greg@kroah.com)
7 * Copyright (c) 2001 IBM Corp.
8 *
9 * All rights reserved.
10 *
11 * Send feedback to <greg@kroah.com>
12 *
13 */
14
15#include <linux/module.h>
16#include <linux/kernel.h>
17#include <linux/types.h>
18#include <linux/pci.h>
19#include "shpchp.h"
20
21
22/* A few routines that create sysfs entries for the hot plug controller */
23
24static ssize_t show_ctrl(struct device *dev, struct device_attribute *attr, char *buf)
25{
26 struct pci_dev *pdev;
27 int index, busnr;
28 struct resource *res;
29 struct pci_bus *bus;
30 size_t len = 0;
31
32 pdev = to_pci_dev(dev);
33 bus = pdev->subordinate;
34
35 len += sysfs_emit_at(buf, len, "Free resources: memory\n");
36 pci_bus_for_each_resource(bus, res, index) {
37 if (res && (res->flags & IORESOURCE_MEM) &&
38 !(res->flags & IORESOURCE_PREFETCH)) {
39 len += sysfs_emit_at(buf, len,
40 "start = %8.8llx, length = %8.8llx\n",
41 (unsigned long long)res->start,
42 (unsigned long long)resource_size(res));
43 }
44 }
45 len += sysfs_emit_at(buf, len, "Free resources: prefetchable memory\n");
46 pci_bus_for_each_resource(bus, res, index) {
47 if (res && (res->flags & IORESOURCE_MEM) &&
48 (res->flags & IORESOURCE_PREFETCH)) {
49 len += sysfs_emit_at(buf, len,
50 "start = %8.8llx, length = %8.8llx\n",
51 (unsigned long long)res->start,
52 (unsigned long long)resource_size(res));
53 }
54 }
55 len += sysfs_emit_at(buf, len, "Free resources: IO\n");
56 pci_bus_for_each_resource(bus, res, index) {
57 if (res && (res->flags & IORESOURCE_IO)) {
58 len += sysfs_emit_at(buf, len,
59 "start = %8.8llx, length = %8.8llx\n",
60 (unsigned long long)res->start,
61 (unsigned long long)resource_size(res));
62 }
63 }
64 len += sysfs_emit_at(buf, len, "Free resources: bus numbers\n");
65 for (busnr = bus->busn_res.start; busnr <= bus->busn_res.end; busnr++) {
66 if (!pci_find_bus(pci_domain_nr(bus), busnr))
67 break;
68 }
69 if (busnr < bus->busn_res.end)
70 len += sysfs_emit_at(buf, len,
71 "start = %8.8x, length = %8.8x\n",
72 busnr, (int)(bus->busn_res.end - busnr));
73
74 return len;
75}
76static DEVICE_ATTR(ctrl, S_IRUGO, show_ctrl, NULL);
77
78int shpchp_create_ctrl_files(struct controller *ctrl)
79{
80 return device_create_file(&ctrl->pci_dev->dev, &dev_attr_ctrl);
81}
82
83void shpchp_remove_ctrl_files(struct controller *ctrl)
84{
85 device_remove_file(&ctrl->pci_dev->dev, &dev_attr_ctrl);
86}