drivers/ide/ide-disk_proc.c

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