drivers/ide/ide-disk_proc.c

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