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-rw-r--r--drivers/ide/pci/piix.c47
1 files changed, 1 insertions, 46 deletions
diff --git a/drivers/ide/pci/piix.c b/drivers/ide/pci/piix.c
index bd6d3f77d30..70dc8792b44 100644
--- a/drivers/ide/pci/piix.c
+++ b/drivers/ide/pci/piix.c
@@ -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