drivers/ide/ide-disk_proc.c

   1 #include <linux/kernel.h>
   2 #include <linux/ide.h>
   3
   4 #include "ide-disk.h"
   5
   6 static int smart_enable(ide_drive_t *drive)
   7 {
   8         struct ide_cmd cmd;
   9         struct ide_taskfile *tf = &cmd.tf;
  10
  11         memset(&cmd, 0, sizeof(cmd));
  12         tf->feature = ATA_SMART_ENABLE;
  13         tf->lbam    = ATA_SMART_LBAM_PASS;
  14         tf->lbah    = ATA_SMART_LBAH_PASS;
  15         tf->command = ATA_CMD_SMART;
  16         cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
  17         cmd.valid.in.tf  = IDE_VALID_IN_TF  | IDE_VALID_DEVICE;
  18
  19         return ide_no_data_taskfile(drive, &cmd);
  20 }
  21
  22 static int get_smart_data(ide_drive_t *drive, u8 *buf, u8 sub_cmd)
  23 {
  24         struct ide_cmd cmd;
  25         struct ide_taskfile *tf = &cmd.tf;
  26
  27         memset(&cmd, 0, sizeof(cmd));
  28         tf->feature = sub_cmd;
  29         tf->nsect   = 0x01;
  30         tf->lbam    = ATA_SMART_LBAM_PASS;
  31         tf->lbah    = ATA_SMART_LBAH_PASS;
  32         tf->command = ATA_CMD_SMART;
  33         cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
  34         cmd.valid.in.tf  = IDE_VALID_IN_TF  | IDE_VALID_DEVICE;
  35         cmd.protocol = ATA_PROT_PIO;
  36
  37         return ide_raw_taskfile(drive, &cmd, buf, 1);
  38 }
  39
  40 static int proc_idedisk_read_cache
  41         (char *page, char **start, off_t off, int count, int *eof, void *data)
  42 {
  43         ide_drive_t     *drive = (ide_drive_t *) data;
  44         char            *out = page;
  45         int             len;
  46
  47         if (drive->dev_flags & IDE_DFLAG_ID_READ)
  48                 len = sprintf(out, "%i\n", drive->id[ATA_ID_BUF_SIZE] / 2);
  49         else
  50                 len = sprintf(out, "(none)\n");
  51
  52         PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
  53 }
  54
  55 static int proc_idedisk_read_capacity
  56         (char *page, char **start, off_t off, int count, int *eof, void *data)
  57 {
  58         ide_drive_t*drive = (ide_drive_t *)data;
  59         int len;
  60
  61         len = sprintf(page, "%llu\n", (long long)ide_gd_capacity(drive));
  62
  63         PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
  64 }
  65
  66 static int proc_idedisk_read_smart(char *page, char **start, off_t off,
  67                                    int count, int *eof, void *data, u8 sub_cmd)
  68 {
  69         ide_drive_t     *drive = (ide_drive_t *)data;
  70         int             len = 0, i = 0;
  71
  72         (void)smart_enable(drive);
  73
  74         if (get_smart_data(drive, page, sub_cmd) == 0) {
  75                 unsigned short *val = (unsigned short *) page;
  76                 char *out = (char *)val + SECTOR_SIZE;
  77
  78                 page = out;
  79                 do {
  80                         out += sprintf(out, "%04x%c", le16_to_cpu(*val),
  81                                        (++i & 7) ? ' ' : '\n');
  82                         val += 1;
  83                 } while (i < SECTOR_SIZE / 2);
  84                 len = out - page;
  85         }
  86
  87         PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
  88 }
  89
  90 static int proc_idedisk_read_sv
  91         (char *page, char **start, off_t off, int count, int *eof, void *data)
  92 {
  93         return proc_idedisk_read_smart(page, start, off, count, eof, data,
  94                                        ATA_SMART_READ_VALUES);
  95 }
  96
  97 static int proc_idedisk_read_st
  98         (char *page, char **start, off_t off, int count, int *eof, void *data)
  99 {
 100         return proc_idedisk_read_smart(page, start, off, count, eof, data,
 101                                        ATA_SMART_READ_THRESHOLDS);
 102 }
 103
 104 ide_proc_entry_t ide_disk_proc[] = {
 105         { "cache",        S_IFREG|S_IRUGO, proc_idedisk_read_cache,    NULL },
 106         { "capacity",     S_IFREG|S_IRUGO, proc_idedisk_read_capacity, NULL },
 107         { "geometry",     S_IFREG|S_IRUGO, proc_ide_read_geometry,     NULL },
 108         { "smart_values", S_IFREG|S_IRUSR, proc_idedisk_read_sv,       NULL },
 109         { "smart_thresholds", S_IFREG|S_IRUSR, proc_idedisk_read_st,   NULL },
 110         { NULL, 0, NULL, NULL }
 111 };
 112
 113 ide_devset_rw_field(bios_cyl, bios_cyl);
 114 ide_devset_rw_field(bios_head, bios_head);
 115 ide_devset_rw_field(bios_sect, bios_sect);
 116 ide_devset_rw_field(failures, failures);
 117 ide_devset_rw_field(lun, lun);
 118 ide_devset_rw_field(max_failures, max_failures);
 119
 120 const struct ide_proc_devset ide_disk_settings[] = {
 121         IDE_PROC_DEVSET(acoustic,       0,   254),
 122         IDE_PROC_DEVSET(address,        0,     2),
 123         IDE_PROC_DEVSET(bios_cyl,       0, 65535),
 124         IDE_PROC_DEVSET(bios_head,      0,   255),
 125         IDE_PROC_DEVSET(bios_sect,      0,    63),
 126         IDE_PROC_DEVSET(failures,       0, 65535),
 127         IDE_PROC_DEVSET(lun,            0,     7),
 128         IDE_PROC_DEVSET(max_failures,   0, 65535),
 129         IDE_PROC_DEVSET(multcount,      0,    16),
 130         IDE_PROC_DEVSET(nowerr,         0,     1),
 131         IDE_PROC_DEVSET(wcache,         0,     1),
 132         { NULL },
 133 };