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// SPDX-License-Identifier: GPL-2.0
/*
* PIO blacklist. Some drives incorrectly report their maximal PIO mode,
* at least in respect to CMD640. Here we keep info on some known drives.
*
* Changes to the ide_pio_blacklist[] should be made with EXTREME CAUTION
* to avoid breaking the fragile cmd640.c support.
*/
#include <linux/string.h>
#include <linux/ide.h>
static struct ide_pio_info {
const char *name;
int pio;
} ide_pio_blacklist [] = {
{ "Conner Peripherals 540MB - CFS540A", 3 },
{ "WDC AC2700", 3 },
{ "WDC AC2540", 3 },
{ "WDC AC2420", 3 },
{ "WDC AC2340", 3 },
{ "WDC AC2250", 0 },
{ "WDC AC2200", 0 },
{ "WDC AC21200", 4 },
{ "WDC AC2120", 0 },
{ "WDC AC2850", 3 },
{ "WDC AC1270", 3 },
{ "WDC AC1170", 1 },
{ "WDC AC1210", 1 },
{ "WDC AC280", 0 },
{ "WDC AC31000", 3 },
{ "WDC AC31200", 3 },
{ "Maxtor 7131 AT", 1 },
{ "Maxtor 7171 AT", 1 },
{ "Maxtor 7213 AT", 1 },
{ "Maxtor 7245 AT", 1 },
{ "Maxtor 7345 AT", 1 },
{ "Maxtor 7546 AT", 3 },
{ "Maxtor 7540 AV", 3 },
{ "SAMSUNG SHD-3121A", 1 },
{ "SAMSUNG SHD-3122A", 1 },
{ "SAMSUNG SHD-3172A", 1 },
{ "ST5660A", 3 },
{ "ST3660A", 3 },
{ "ST3630A", 3 },
{ "ST3655A", 3 },
{ "ST3391A", 3 },
{ "ST3390A", 1 },
{ "ST3600A", 1 },
{ "ST3290A", 0 },
{ "ST3144A", 0 },
{ "ST3491A", 1 }, /* reports 3, should be 1 or 2 (depending on drive)
according to Seagate's FIND-ATA program */
{ "QUANTUM ELS127A", 0 },
{ "QUANTUM ELS170A", 0 },
{ "QUANTUM LPS240A", 0 },
{ "QUANTUM LPS210A", 3 },
{ "QUANTUM LPS270A", 3 },
{ "QUANTUM LPS365A", 3 },
{ "QUANTUM LPS540A", 3 },
{ "QUANTUM LIGHTNING 540A", 3 },
{ "QUANTUM LIGHTNING 730A", 3 },
{ "QUANTUM FIREBALL_540", 3 }, /* Older Quantum Fireballs don't work */
{ "QUANTUM FIREBALL_640", 3 },
{ "QUANTUM FIREBALL_1080", 3 },
{ "QUANTUM FIREBALL_1280", 3 },
{ NULL, 0 }
};
/**
* ide_scan_pio_blacklist - check for a blacklisted drive
* @model: Drive model string
*
* This routine searches the ide_pio_blacklist for an entry
* matching the start/whole of the supplied model name.
*
* Returns -1 if no match found.
* Otherwise returns the recommended PIO mode from ide_pio_blacklist[].
*/
int ide_scan_pio_blacklist(char *model)
{
struct ide_pio_info *p;
for (p = ide_pio_blacklist; p->name != NULL; p++) {
if (strncmp(p->name, model, strlen(p->name)) == 0)
return p->pio;
}
return -1;
}
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