drivers/ide/ide-disk_proc.c

   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
   9 static 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
  25 static 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
  43 static 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
  54 static 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
  59 static 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
  67 static 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
  75 static 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
  80 static 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
  88 static 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
 111 static 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
 116 static 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
 121 static 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
 129 static 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
 134 static 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
 139 static 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
 147 ide_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
 156 ide_devset_rw_field(bios_cyl, bios_cyl);
 157 ide_devset_rw_field(bios_head, bios_head);
 158 ide_devset_rw_field(bios_sect, bios_sect);
 159 ide_devset_rw_field(failures, failures);
 160 ide_devset_rw_field(lun, lun);
 161 ide_devset_rw_field(max_failures, max_failures);
 162
 163 const 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 };