linux/drivers/ide/ide-disk_proc.c
<<
>>
Prefs
   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(inode)->data);
  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(inode)->data);
  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(inode)->data);
 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(inode)->data);
 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};
 177
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.