ide-disk_proc.c revision 6d703a81ad5fdd102334751ddacb053ecc6ff046 
1#include <linux/kernel.h>
2#include <linux/ide.h>
3#include <linux/seq_file.h>
4
5#include "ide-disk.h"
6
7static int smart_enable(ide_drive_t *drive)
8{
9	struct ide_cmd cmd;
10	struct ide_taskfile *tf = &cmd.tf;
11
12	memset(&cmd, 0, sizeof(cmd));
13	tf->feature = ATA_SMART_ENABLE;
14	tf->lbam    = ATA_SMART_LBAM_PASS;
15	tf->lbah    = ATA_SMART_LBAH_PASS;
16	tf->command = ATA_CMD_SMART;
17	cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
18	cmd.valid.in.tf  = IDE_VALID_IN_TF  | IDE_VALID_DEVICE;
19
20	return ide_no_data_taskfile(drive, &cmd);
21}
22
23static int get_smart_data(ide_drive_t *drive, u8 *buf, u8 sub_cmd)
24{
25	struct ide_cmd cmd;
26	struct ide_taskfile *tf = &cmd.tf;
27
28	memset(&cmd, 0, sizeof(cmd));
29	tf->feature = sub_cmd;
30	tf->nsect   = 0x01;
31	tf->lbam    = ATA_SMART_LBAM_PASS;
32	tf->lbah    = ATA_SMART_LBAH_PASS;
33	tf->command = ATA_CMD_SMART;
34	cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
35	cmd.valid.in.tf  = IDE_VALID_IN_TF  | IDE_VALID_DEVICE;
36	cmd.protocol = ATA_PROT_PIO;
37
38	return ide_raw_taskfile(drive, &cmd, buf, 1);
39}
40
41static int idedisk_cache_proc_show(struct seq_file *m, void *v)
42{
43	ide_drive_t	*drive = (ide_drive_t *) m->private;
44
45	if (drive->dev_flags & IDE_DFLAG_ID_READ)
46		seq_printf(m, "%i\n", drive->id[ATA_ID_BUF_SIZE] / 2);
47	else
48		seq_printf(m, "(none)\n");
49	return 0;
50}
51
52static int idedisk_cache_proc_open(struct inode *inode, struct file *file)
53{
54	return single_open(file, idedisk_cache_proc_show, PDE(inode)->data);
55}
56
57static const struct file_operations idedisk_cache_proc_fops = {
58	.owner		= THIS_MODULE,
59	.open		= idedisk_cache_proc_open,
60	.read		= seq_read,
61	.llseek		= seq_lseek,
62	.release	= single_release,
63};
64
65static int idedisk_capacity_proc_show(struct seq_file *m, void *v)
66{
67	ide_drive_t*drive = (ide_drive_t *)m->private;
68
69	seq_printf(m, "%llu\n", (long long)ide_gd_capacity(drive));
70	return 0;
71}
72
73static int idedisk_capacity_proc_open(struct inode *inode, struct file *file)
74{
75	return single_open(file, idedisk_capacity_proc_show, PDE(inode)->data);
76}
77
78static const struct file_operations idedisk_capacity_proc_fops = {
79	.owner		= THIS_MODULE,
80	.open		= idedisk_capacity_proc_open,
81	.read		= seq_read,
82	.llseek		= seq_lseek,
83	.release	= single_release,
84};
85
86static int __idedisk_proc_show(struct seq_file *m, ide_drive_t *drive, u8 sub_cmd)
87{
88	u8 *buf;
89
90	buf = kmalloc(SECTOR_SIZE, GFP_KERNEL);
91	if (!buf)
92		return -ENOMEM;
93
94	(void)smart_enable(drive);
95
96	if (get_smart_data(drive, buf, sub_cmd) == 0) {
97		__le16 *val = (__le16 *)buf;
98		int i;
99
100		for (i = 0; i < SECTOR_SIZE / 2; i++) {
101			seq_printf(m, "%04x%c", le16_to_cpu(val[i]),
102					(i % 8) == 7 ? '\n' : ' ');
103		}
104	}
105	kfree(buf);
106	return 0;
107}
108
109static int idedisk_sv_proc_show(struct seq_file *m, void *v)
110{
111	return __idedisk_proc_show(m, m->private, ATA_SMART_READ_VALUES);
112}
113
114static int idedisk_sv_proc_open(struct inode *inode, struct file *file)
115{
116	return single_open(file, idedisk_sv_proc_show, PDE(inode)->data);
117}
118
119static const struct file_operations idedisk_sv_proc_fops = {
120	.owner		= THIS_MODULE,
121	.open		= idedisk_sv_proc_open,
122	.read		= seq_read,
123	.llseek		= seq_lseek,
124	.release	= single_release,
125};
126
127static int idedisk_st_proc_show(struct seq_file *m, void *v)
128{
129	return __idedisk_proc_show(m, m->private, ATA_SMART_READ_THRESHOLDS);
130}
131
132static int idedisk_st_proc_open(struct inode *inode, struct file *file)
133{
134	return single_open(file, idedisk_st_proc_show, PDE(inode)->data);
135}
136
137static const struct file_operations idedisk_st_proc_fops = {
138	.owner		= THIS_MODULE,
139	.open		= idedisk_st_proc_open,
140	.read		= seq_read,
141	.llseek		= seq_lseek,
142	.release	= single_release,
143};
144
145ide_proc_entry_t ide_disk_proc[] = {
146	{ "cache",	  S_IFREG|S_IRUGO, &idedisk_cache_proc_fops	},
147	{ "capacity",	  S_IFREG|S_IRUGO, &idedisk_capacity_proc_fops	},
148	{ "geometry",	  S_IFREG|S_IRUGO, &ide_geometry_proc_fops	},
149	{ "smart_values", S_IFREG|S_IRUSR, &idedisk_sv_proc_fops	},
150	{ "smart_thresholds", S_IFREG|S_IRUSR, &idedisk_st_proc_fops	},
151	{}
152};
153
154ide_devset_rw_field(bios_cyl, bios_cyl);
155ide_devset_rw_field(bios_head, bios_head);
156ide_devset_rw_field(bios_sect, bios_sect);
157ide_devset_rw_field(failures, failures);
158ide_devset_rw_field(lun, lun);
159ide_devset_rw_field(max_failures, max_failures);
160
161const struct ide_proc_devset ide_disk_settings[] = {
162	IDE_PROC_DEVSET(acoustic,	0,   254),
163	IDE_PROC_DEVSET(address,	0,     2),
164	IDE_PROC_DEVSET(bios_cyl,	0, 65535),
165	IDE_PROC_DEVSET(bios_head,	0,   255),
166	IDE_PROC_DEVSET(bios_sect,	0,    63),
167	IDE_PROC_DEVSET(failures,	0, 65535),
168	IDE_PROC_DEVSET(lun,		0,     7),
169	IDE_PROC_DEVSET(max_failures,	0, 65535),
170	IDE_PROC_DEVSET(multcount,	0,    16),
171	IDE_PROC_DEVSET(nowerr,		0,     1),
172	IDE_PROC_DEVSET(wcache,		0,     1),
173	{ NULL },
174};
175