diff options
Diffstat (limited to 'i386/i386at/gpl/linux/block/ide_modes.h')
| -rw-r--r-- | i386/i386at/gpl/linux/block/ide_modes.h | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/i386/i386at/gpl/linux/block/ide_modes.h b/i386/i386at/gpl/linux/block/ide_modes.h new file mode 100644 index 00000000..e174d5dc --- /dev/null +++ b/i386/i386at/gpl/linux/block/ide_modes.h @@ -0,0 +1,142 @@ +#ifndef _IDE_MODES_H +#define _IDE_MODES_H +/* + * linux/drivers/block/ide_modes.h + * + * Copyright (C) 1996 Linus Torvalds, Igor Abramov, and Mark Lord + */ + +/* + * Shared data/functions for determining best PIO mode for an IDE drive. + * Most of this stuff originally lived in cmd640.c, and changes to the + * ide_pio_blacklist[] table should be made with EXTREME CAUTION to avoid + * breaking the fragile cmd640.c support. + */ + +#if defined(CONFIG_BLK_DEV_CMD640) || defined(CONFIG_IDE_CHIPSETS) + +#ifndef _IDE_C + +int ide_scan_pio_blacklist (char *model); +unsigned int ide_get_best_pio_mode (ide_drive_t *drive); + +#else /* _IDE_C */ + +/* + * Black list. Some drives incorrectly report their maximal PIO mode, + * at least in respect to CMD640. Here we keep info on some known drives. + */ +static struct ide_pio_info { + const char *name; + int pio; +} ide_pio_blacklist [] = { +/* { "Conner Peripherals 1275MB - CFS1275A", 4 }, */ + + { "WDC AC2700", 3 }, + { "WDC AC2540", 3 }, + { "WDC AC2420", 3 }, + { "WDC AC2340", 3 }, + { "WDC AC2250", 0 }, + { "WDC AC2200", 0 }, + { "WDC AC2120", 0 }, + { "WDC AC2850", 3 }, + { "WDC AC1270", 3 }, + { "WDC AC1170", 3 }, + { "WDC AC1210", 1 }, + { "WDC AC280", 0 }, +/* { "WDC AC21000", 4 }, */ + { "WDC AC31000", 3 }, +/* { "WDC AC21200", 4 }, */ + { "WDC AC31200", 3 }, +/* { "WDC AC31600", 4 }, */ + + { "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 }, + +/* { "ST51080A", 4 }, + * { "ST51270A", 4 }, + * { "ST31220A", 4 }, + * { "ST31640A", 4 }, + * { "ST32140A", 4 }, + * { "ST3780A", 4 }, + */ + { "ST5660A", 3 }, + { "ST3660A", 3 }, + { "ST3630A", 3 }, + { "ST3655A", 3 }, + { "ST3391A", 3 }, + { "ST3390A", 1 }, + { "ST3600A", 1 }, + { "ST3290A", 0 }, + { "ST3144A", 0 }, + + { "QUANTUM ELS127A", 0 }, + { "QUANTUM ELS170A", 0 }, + { "QUANTUM LPS240A", 0 }, + { "QUANTUM LPS210A", 3 }, + { "QUANTUM LPS270A", 3 }, + { "QUANTUM LPS365A", 3 }, + { "QUANTUM LPS540A", 3 }, + { "QUANTUM FIREBALL", 3 }, /* For models 540/640/1080/1280 */ + /* 1080A works fine in mode4 with triton */ + { NULL, 0 } +}; + +/* + * 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; +} + +/* + * This routine returns the recommended PIO mode for a given drive, + * based on the drive->id information and the ide_pio_blacklist[]. + * This is used by most chipset support modules when "auto-tuning". + */ +unsigned int ide_get_best_pio_mode (ide_drive_t *drive) +{ + unsigned int pio = 0; + struct hd_driveid *id = drive->id; + + if (id != NULL) { + if (HWIF(drive)->chipset != ide_cmd640 && !strcmp("QUANTUM FIREBALL1080A", id->model)) + pio = 4; + else + pio = ide_scan_pio_blacklist(id->model); + if (pio == -1) { + pio = (id->tPIO < 2) ? id->tPIO : 2; + if (id->field_valid & 2) { + byte modes = id->eide_pio_modes; + if (modes & 4) pio = 5; + else if (modes & 2) pio = 4; + else if (modes & 1) pio = 3; + } + } + } + return pio; +} + +#endif /* _IDE_C */ +#endif /* defined(CONFIG_BLK_DEV_CMD640) || defined(CONFIG_IDE_CHIPSETS) */ +#endif /* _IDE_MODES_H */ |