Messages in this thread | | | Date | Fri, 23 Feb 2001 15:02:37 +0100 | From | David Balazic <> | Subject | weird /proc/ide/hdx/settings |
| |
Running kernel 2.4.2 :
cat /proc/ide/hdc/settings
name value min max mode ---- ----- --- --- ---- bios_cyl 89355 0 65535 rw bios_head 16 0 255 rw bios_sect 63 0 63 rw breada_readahead 4 0 127 rw bswap 0 0 1 r current_speed 69 0 69 rw file_readahead 0 0 2097151 rw ide_scsi 0 0 1 rw init_speed 12 0 69 rw io_32bit 1 0 3 rw keepsettings 0 0 1 rw lun 0 0 7 rw max_kb_per_request 128 1 127 rw multcount 0 0 8 rw nice1 1 0 1 rw nowerr 0 0 1 rw number 2 0 3 rw pio_mode write-only 0 255 w slow 0 0 1 rw unmaskirq 1 0 1 rw using_dma --------------------%X---------------
max_kb_per_request has value 128 , but max is 127 !?
max for multcount is 8 , but my drive supports 16 sectors. ( see hdparm output below ) If I set multcount to 8 sectors ( hdparm -m 8 /dev/hdc ) then /proc/ide/hdc/settings will show : multcount 4 0 8 rw
The values are divided by 2. Why ?
hdparm -i /dev/hdc :
/dev/hdc:
Model=IBM-DTLA-307045, FwRev=TX6OA60A, SerialNo=YMEYMML9342 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=40 BuffType=DualPortCache, BuffSize=1916kB, MaxMultSect=16, MultSect=off CurCHS=16383/16/63, CurSects=-66060037, LBA=yes, LBAsects=90069840 IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5
IDE interface is VIA xxx686b ( ATA-100 ) IDE driver is VIA IDE v4.3
-- David Balazic -------------- "Be excellent to each other." - Bill & Ted - - - - - - - - - - - - - - - - - - - - - - - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |