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piix: remove stale comments 

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-02-01 23:09:30 +01:00
parent 4166c1993b
commit 2be564b034
1 changed files with 1 additions and 46 deletions
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47
drivers/ide/pci/piix.c
View File

@ -8,53 +8,8 @@
*
* May be copied or modified under the terms of the GNU General Public License
*
* PIO mode setting function for Intel chipsets.
* For use instead of BIOS settings.
* Documentation:
*
* 40-41
* 42-43
*
* 41
* 43
*
* | PIO 0 | c0 | 80 | 0 |
* | PIO 2 | SW2 | d0 | 90 | 4 |
* | PIO 3 | MW1 | e1 | a1 | 9 |
* | PIO 4 | MW2 | e3 | a3 | b |
*
* sitre = word40 & 0x4000; primary
* sitre = word42 & 0x4000; secondary
*
* 44 8421|8421 hdd|hdb
*
* 48 8421 hdd|hdc|hdb|hda udma enabled
*
* 0001 hda
* 0010 hdb
* 0100 hdc
* 1000 hdd
*
* 4a 84|21 hdb|hda
* 4b 84|21 hdd|hdc
*
* ata-33/82371AB
* ata-33/82371EB
* ata-33/82801AB ata-66/82801AA
* 00|00 udma 0 00|00 reserved
* 01|01 udma 1 01|01 udma 3
* 10|10 udma 2 10|10 udma 4
* 11|11 reserved 11|11 reserved
*
* 54 8421|8421 ata66 drive|ata66 enable
*
* pci_read_config_word(HWIF(drive)->pci_dev, 0x40, &reg40);
* pci_read_config_word(HWIF(drive)->pci_dev, 0x42, &reg42);
* pci_read_config_word(HWIF(drive)->pci_dev, 0x44, &reg44);
* pci_read_config_byte(HWIF(drive)->pci_dev, 0x48, &reg48);
* pci_read_config_word(HWIF(drive)->pci_dev, 0x4a, &reg4a);
* pci_read_config_byte(HWIF(drive)->pci_dev, 0x54, &reg54);
*
* Documentation
* Publically available from Intel web site. Errata documentation
* is also publically available. As an aide to anyone hacking on this
* driver the list of errata that are relevant is below.going back to