drivers/ide/ide-disk_proc.c

   1 #include <linux/kernel.h>
   2 #include <linux/ide.h>
   3 #include <linux/seq_file.h>
   4
   5 #include "ide-disk.h"
   6
   7 static 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
  23 static 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
  41 static 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
  52 static 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
  57 static 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
  65 static 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
  73 static 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
  78 static 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
  86 static 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
 109 static 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
 114 static 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
 119 static 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
 127 static 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
 132 static 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
 137 static 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
 145 ide_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
 154 ide_devset_rw_field(bios_cyl, bios_cyl);
 155 ide_devset_rw_field(bios_head, bios_head);
 156 ide_devset_rw_field(bios_sect, bios_sect);
 157 ide_devset_rw_field(failures, failures);
 158 ide_devset_rw_field(lun, lun);
 159 ide_devset_rw_field(max_failures, max_failures);
 160
 161 const 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 };