drivers/ide/ide-pio-blacklist.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * PIO blacklist.  Some drives incorrectly report their maximal PIO mode,
   4  * at least in respect to CMD640.  Here we keep info on some known drives.
   5  *
   6  * Changes to the ide_pio_blacklist[] should be made with EXTREME CAUTION
   7  * to avoid breaking the fragile cmd640.c support.
   8  */
   9
  10 #include <linux/string.h>
  11 #include <linux/ide.h>
  12
  13 static struct ide_pio_info {
  14         const char      *name;
  15         int             pio;
  16 } ide_pio_blacklist [] = {
  17         { "Conner Peripherals 540MB - CFS540A", 3 },
  18
  19         { "WDC AC2700",  3 },
  20         { "WDC AC2540",  3 },
  21         { "WDC AC2420",  3 },
  22         { "WDC AC2340",  3 },
  23         { "WDC AC2250",  0 },
  24         { "WDC AC2200",  0 },
  25         { "WDC AC21200", 4 },
  26         { "WDC AC2120",  0 },
  27         { "WDC AC2850",  3 },
  28         { "WDC AC1270",  3 },
  29         { "WDC AC1170",  1 },
  30         { "WDC AC1210",  1 },
  31         { "WDC AC280",   0 },
  32         { "WDC AC31000", 3 },
  33         { "WDC AC31200", 3 },
  34
  35         { "Maxtor 7131 AT", 1 },
  36         { "Maxtor 7171 AT", 1 },
  37         { "Maxtor 7213 AT", 1 },
  38         { "Maxtor 7245 AT", 1 },
  39         { "Maxtor 7345 AT", 1 },
  40         { "Maxtor 7546 AT", 3 },
  41         { "Maxtor 7540 AV", 3 },
  42
  43         { "SAMSUNG SHD-3121A", 1 },
  44         { "SAMSUNG SHD-3122A", 1 },
  45         { "SAMSUNG SHD-3172A", 1 },
  46
  47         { "ST5660A",  3 },
  48         { "ST3660A",  3 },
  49         { "ST3630A",  3 },
  50         { "ST3655A",  3 },
  51         { "ST3391A",  3 },
  52         { "ST3390A",  1 },
  53         { "ST3600A",  1 },
  54         { "ST3290A",  0 },
  55         { "ST3144A",  0 },
  56         { "ST3491A",  1 }, /* reports 3, should be 1 or 2 (depending on drive)
  57                               according to Seagate's FIND-ATA program */
  58
  59         { "QUANTUM ELS127A", 0 },
  60         { "QUANTUM ELS170A", 0 },
  61         { "QUANTUM LPS240A", 0 },
  62         { "QUANTUM LPS210A", 3 },
  63         { "QUANTUM LPS270A", 3 },
  64         { "QUANTUM LPS365A", 3 },
  65         { "QUANTUM LPS540A", 3 },
  66         { "QUANTUM LIGHTNING 540A", 3 },
  67         { "QUANTUM LIGHTNING 730A", 3 },
  68
  69         { "QUANTUM FIREBALL_540", 3 }, /* Older Quantum Fireballs don't work */
  70         { "QUANTUM FIREBALL_640", 3 },
  71         { "QUANTUM FIREBALL_1080", 3 },
  72         { "QUANTUM FIREBALL_1280", 3 },
  73         { NULL, 0 }
  74 };
  75
  76 /**
  77  *      ide_scan_pio_blacklist  -       check for a blacklisted drive
  78  *      @model: Drive model string
  79  *
  80  *      This routine searches the ide_pio_blacklist for an entry
  81  *      matching the start/whole of the supplied model name.
  82  *
  83  *      Returns -1 if no match found.
  84  *      Otherwise returns the recommended PIO mode from ide_pio_blacklist[].
  85  */
  86
  87 int ide_scan_pio_blacklist(char *model)
  88 {
  89         struct ide_pio_info *p;
  90
  91         for (p = ide_pio_blacklist; p->name != NULL; p++) {
  92                 if (strncmp(p->name, model, strlen(p->name)) == 0)
  93                         return p->pio;
  94         }
  95         return -1;
  96 }