ATIIXP patch

PATCH Velu Erwan 1 participant 1 message Jun 21, 2006 libata

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Velu Erwan

author

2006-06-21 09:50 UTC #0 lore raw

Hey Andrew,

As suggested by Randy Dunlap on the linux-ide mailing list (http://marc.theaimsgroup.com/?l=linux-ide&m=115082279504424&w=2),
I send you this patch Bruno Harbulot did on a previous 'really crappy' patch I did.

We've been testing it for a while, it works fine so we'd like to see it intergrated in your tree and maybe upstream later.

This patch allow the sata port of the ATIIXP chipset to work at 55MB/sec instead of 14.

Regards,
Erwan

drivers/ide/ide-iops.c +12 -0

@@ -1,6 +1,10 @@
 /*
+ * linux/drivers/ide/ide-iops.c	Version 0.38	Nov 05, 2005
  * linux/drivers/ide/ide-iops.c	Version 0.37	Mar 05, 2003
  *
+ *  Version 0.38		80pin cable detection for SATA drive
+ *  				([email protected])
+ *  
  *  Copyright (C) 2000-2002	Andre Hedrick <[email protected]>
  *  Copyright (C) 2003		Red Hat <[email protected]>
  *

@@ -601,6 +605,14 @@
  */
 u8 eighty_ninty_three (ide_drive_t *drive)
 {
+	/* On SATA drives, word 93 (i.e. hw_config) should be 0.
+	 * This can be tested with the hw_config or this:
+	   if (ata_id_is_sata((u16*)(drive->id)))
+		return 1;
+	 * (remember to include <linux/ata.h>)
+	 */
+	if (drive->id->hw_config == 0)
+		return 1;
 	if(HWIF(drive)->udma_four == 0)
 		return 0;
 	if (!(drive->id->hw_config & 0x6000))