svn commit: r245875 - head/sys/dev/ahci

[Alexander Motin]

Author: mav
Date: Thu Jan 24 09:33:43 2013
New Revision: 245875
URL: http://svnweb.freebsd.org/changeset/base/245875

Log:
  Disable MSI interrupts for SB600 chipset.  According to the report they are
  not functional.
  
  PR:		kern/174880, kern/174985, kern/175002
  MFC after:	1 week

Modified:
  head/sys/dev/ahci/ahci.c

Modified: head/sys/dev/ahci/ahci.c
==============================================================================
--- head/sys/dev/ahci/ahci.c	Thu Jan 24 09:30:42 2013	(r245874)
+++ head/sys/dev/ahci/ahci.c	Thu Jan 24 09:33:43 2013	(r245875)
@@ -114,8 +114,9 @@ static struct {
 #define AHCI_Q_NOAA	512
 #define AHCI_Q_NOCOUNT	1024
 #define AHCI_Q_ALTSIG	2048
+#define AHCI_Q_NOMSI	4096
 } ahci_ids[] = {
-	{0x43801002, 0x00, "ATI IXP600",	0},
+	{0x43801002, 0x00, "ATI IXP600",	AHCI_Q_NOMSI},
 	{0x43901002, 0x00, "ATI IXP700",	0},
 	{0x43911002, 0x00, "ATI IXP700",	0},
 	{0x43921002, 0x00, "ATI IXP700",	0},
@@ -634,6 +635,8 @@ ahci_setup_interrupt(device_t dev)
 	int i, msi = 1;
 
 	/* Process hints. */
+	if (ctlr->quirks & AHCI_Q_NOMSI)
+		msi = 0;
 	resource_int_value(device_get_name(dev),
 	    device_get_unit(dev), "msi", &msi);
 	if (msi < 0)