1#include <linux/kernel.h>
  2#include <linux/ide.h>
  3#include <linux/slab.h>
  4#include <linux/export.h>
  5#include <linux/seq_file.h>
  6
  7#include "ide-disk.h"
  8
  9static int smart_enable(ide_drive_t *drive)
 10{
 11	struct ide_cmd cmd;
 12	struct ide_taskfile *tf = &cmd.tf;
 13
 14	memset(&cmd, 0, sizeof(cmd));
 15	tf->feature = ATA_SMART_ENABLE;
 16	tf->lbam    = ATA_SMART_LBAM_PASS;
 17	tf->lbah    = ATA_SMART_LBAH_PASS;
 18	tf->command = ATA_CMD_SMART;
 19	cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
 20	cmd.valid.in.tf  = IDE_VALID_IN_TF  | IDE_VALID_DEVICE;
 21
 22	return ide_no_data_taskfile(drive, &cmd);
 23}
 24
 25static int get_smart_data(ide_drive_t *drive, u8 *buf, u8 sub_cmd)
 26{
 27	struct ide_cmd cmd;
 28	struct ide_taskfile *tf = &cmd.tf;
 29
 30	memset(&cmd, 0, sizeof(cmd));
 31	tf->feature = sub_cmd;
 32	tf->nsect   = 0x01;
 33	tf->lbam    = ATA_SMART_LBAM_PASS;
 34	tf->lbah    = ATA_SMART_LBAH_PASS;
 35	tf->command = ATA_CMD_SMART;
 36	cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
 37	cmd.valid.in.tf  = IDE_VALID_IN_TF  | IDE_VALID_DEVICE;
 38	cmd.protocol = ATA_PROT_PIO;
 39
 40	return ide_raw_taskfile(drive, &cmd, buf, 1);
 41}
 42
 43static int idedisk_cache_proc_show(struct seq_file *m, void *v)
 44{
 45	ide_drive_t	*drive = (ide_drive_t *) m->private;
 46
 47	if (drive->dev_flags & IDE_DFLAG_ID_READ)
 48		seq_printf(m, "%i\n", drive->id[ATA_ID_BUF_SIZE] / 2);
 49	else
 50		seq_printf(m, "(none)\n");
 51	return 0;
 52}
 53
 54static int idedisk_cache_proc_open(struct inode *inode, struct file *file)
 55{
 56	return single_open(file, idedisk_cache_proc_show, PDE_DATA(inode));
 57}
 58
 59static const struct file_operations idedisk_cache_proc_fops = {
 60	.owner		= THIS_MODULE,
 61	.open		= idedisk_cache_proc_open,
 62	.read		= seq_read,
 63	.llseek		= seq_lseek,
 64	.release	= single_release,
 65};
 66
 67static int idedisk_capacity_proc_show(struct seq_file *m, void *v)
 68{
 69	ide_drive_t*drive = (ide_drive_t *)m->private;
 70
 71	seq_printf(m, "%llu\n", (long long)ide_gd_capacity(drive));
 72	return 0;
 73}
 74
 75static int idedisk_capacity_proc_open(struct inode *inode, struct file *file)
 76{
 77	return single_open(file, idedisk_capacity_proc_show, PDE_DATA(inode));
 78}
 79
 80static const struct file_operations idedisk_capacity_proc_fops = {
 81	.owner		= THIS_MODULE,
 82	.open		= idedisk_capacity_proc_open,
 83	.read		= seq_read,
 84	.llseek		= seq_lseek,
 85	.release	= single_release,
 86};
 87
 88static int __idedisk_proc_show(struct seq_file *m, ide_drive_t *drive, u8 sub_cmd)
 89{
 90	u8 *buf;
 91
 92	buf = kmalloc(SECTOR_SIZE, GFP_KERNEL);
 93	if (!buf)
 94		return -ENOMEM;
 95
 96	(void)smart_enable(drive);
 97
 98	if (get_smart_data(drive, buf, sub_cmd) == 0) {
 99		__le16 *val = (__le16 *)buf;
100		int i;
101
102		for (i = 0; i < SECTOR_SIZE / 2; i++) {
103			seq_printf(m, "%04x%c", le16_to_cpu(val[i]),
104					(i % 8) == 7 ? '\n' : ' ');
105		}
106	}
107	kfree(buf);
108	return 0;
109}
110
111static int idedisk_sv_proc_show(struct seq_file *m, void *v)
112{
113	return __idedisk_proc_show(m, m->private, ATA_SMART_READ_VALUES);
114}
115
116static int idedisk_sv_proc_open(struct inode *inode, struct file *file)
117{
118	return single_open(file, idedisk_sv_proc_show, PDE_DATA(inode));
119}
120
121static const struct file_operations idedisk_sv_proc_fops = {
122	.owner		= THIS_MODULE,
123	.open		= idedisk_sv_proc_open,
124	.read		= seq_read,
125	.llseek		= seq_lseek,
126	.release	= single_release,
127};
128
129static int idedisk_st_proc_show(struct seq_file *m, void *v)
130{
131	return __idedisk_proc_show(m, m->private, ATA_SMART_READ_THRESHOLDS);
132}
133
134static int idedisk_st_proc_open(struct inode *inode, struct file *file)
135{
136	return single_open(file, idedisk_st_proc_show, PDE_DATA(inode));
137}
138
139static const struct file_operations idedisk_st_proc_fops = {
140	.owner		= THIS_MODULE,
141	.open		= idedisk_st_proc_open,
142	.read		= seq_read,
143	.llseek		= seq_lseek,
144	.release	= single_release,
145};
146
147ide_proc_entry_t ide_disk_proc[] = {
148	{ "cache",	  S_IFREG|S_IRUGO, &idedisk_cache_proc_fops	},
149	{ "capacity",	  S_IFREG|S_IRUGO, &idedisk_capacity_proc_fops	},
150	{ "geometry",	  S_IFREG|S_IRUGO, &ide_geometry_proc_fops	},
151	{ "smart_values", S_IFREG|S_IRUSR, &idedisk_sv_proc_fops	},
152	{ "smart_thresholds", S_IFREG|S_IRUSR, &idedisk_st_proc_fops	},
153	{}
154};
155
156ide_devset_rw_field(bios_cyl, bios_cyl);
157ide_devset_rw_field(bios_head, bios_head);
158ide_devset_rw_field(bios_sect, bios_sect);
159ide_devset_rw_field(failures, failures);
160ide_devset_rw_field(lun, lun);
161ide_devset_rw_field(max_failures, max_failures);
162
163const struct ide_proc_devset ide_disk_settings[] = {
164	IDE_PROC_DEVSET(acoustic,	0,   254),
165	IDE_PROC_DEVSET(address,	0,     2),
166	IDE_PROC_DEVSET(bios_cyl,	0, 65535),
167	IDE_PROC_DEVSET(bios_head,	0,   255),
168	IDE_PROC_DEVSET(bios_sect,	0,    63),
169	IDE_PROC_DEVSET(failures,	0, 65535),
170	IDE_PROC_DEVSET(lun,		0,     7),
171	IDE_PROC_DEVSET(max_failures,	0, 65535),
172	IDE_PROC_DEVSET(multcount,	0,    16),
173	IDE_PROC_DEVSET(nowerr,		0,     1),
174	IDE_PROC_DEVSET(wcache,		0,     1),
175	{ NULL },
176};