[PATCH] Fix for aacraid and high memory on 2.6.1

Here is an update to use pci_set_consistent_dma_mask.  But since
dma_alloc_coherent uses dma_mask instead of consistent one, I left in
setting dma_mask as well until the alloc routine changes.

drivers/scsi/aacraid/aacraid.h

@@ -525,7 +525,15 @@ struct aac_driver_ident
 	char *	vname;
 	char *	model;
 	u16	channels;
+	int	quirks;
 };
+/*
+ * Some adapter firmware needs communication memory 
+ * below 2gig. This tells the init function to set the
+ * dma mask such that fib memory will be allocated where the
+ * adapter firmware can get to it.
+ */
+#define AAC_QUIRK_31BIT	1
 
 /*
  *	The adapter interface specs all queues to be located in the same

drivers/scsi/aacraid/linit.c

@@ -119,22 +119,22 @@ MODULE_DEVICE_TABLE(pci, aac_pci_tbl);
  * for the card.  At that time we can remove the channels from here
  */
 static struct aac_driver_ident aac_drivers[] = {
-	{ aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2 }, /* PERC 2/Si */
-	{ aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2 }, /* PERC 3/Di */
-	{ aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2 }, /* PERC 3/Si */
-	{ aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2 }, /* PERC 3/Si */
-	{ aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2 }, /* PERC 3/Di */
-	{ aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2 }, /* PERC 3/Di */
-	{ aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2 }, /* PERC 3/Di */
-	{ aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2 }, /* PERC 3/Di */
-	{ aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2 }, /* PERC 3/Di */
-	{ aac_rx_init, "aacraid",  "ADAPTEC ", "catapult        ", 2 }, /* catapult*/
-	{ aac_rx_init, "aacraid",  "ADAPTEC ", "tomcat          ", 2 }, /* tomcat*/
-	{ aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 2120S   ", 1 }, /* Adaptec 2120S (Crusader)*/
-	{ aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 2200S   ", 2 }, /* Adaptec 2200S (Vulcan)*/
-	{ aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 2200S   ", 2 }, /* Adaptec 2200S (Vulcan-2m)*/
-	{ aac_rx_init, "aacraid",  "Legend  ", "Legend S220     ", 1 }, /* Legend S220*/
-	{ aac_rx_init, "aacraid",  "Legend  ", "Legend S230     ", 2 }, /* Legend S230*/
+	{ aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT }, /* PERC 2/Si */
+	{ aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT }, /* PERC 3/Di */
+	{ aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT }, /* PERC 3/Si */
+	{ aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT }, /* PERC 3/Si */
+	{ aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT }, /* PERC 3/Di */
+	{ aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT }, /* PERC 3/Di */
+	{ aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT }, /* PERC 3/Di */
+	{ aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT }, /* PERC 3/Di */
+	{ aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT }, /* PERC 3/Di */
+	{ aac_rx_init, "aacraid",  "ADAPTEC ", "catapult        ", 2, AAC_QUIRK_31BIT }, /* catapult*/
+	{ aac_rx_init, "aacraid",  "ADAPTEC ", "tomcat          ", 2, AAC_QUIRK_31BIT }, /* tomcat*/
+	{ aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 2120S   ", 1, AAC_QUIRK_31BIT }, /* Adaptec 2120S (Crusader)*/
+	{ aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 2200S   ", 2, AAC_QUIRK_31BIT }, /* Adaptec 2200S (Vulcan)*/
+	{ aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 2200S   ", 2, AAC_QUIRK_31BIT }, /* Adaptec 2200S (Vulcan-2m)*/
+	{ aac_rx_init, "aacraid",  "Legend  ", "Legend S220     ", 1, AAC_QUIRK_31BIT }, /* Legend S220*/
+	{ aac_rx_init, "aacraid",  "Legend  ", "Legend S230     ", 2, AAC_QUIRK_31BIT }, /* Legend S230*/
 
 	{ aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 3230S   ", 2 }, /* Adaptec 3230S (Harrier)*/
 	{ aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 3240S   ", 2 }, /* Adaptec 3240S (Tornado)*/
@@ -144,10 +144,10 @@ static struct aac_driver_ident aac_drivers[] = {
 	{ aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec         ", 2 }, /* (Marco)*/
 	{ aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec         ", 2 }, /* (Sebring)*/
 
-	{ aac_rx_init, "percraid", "DELL    ", "PERC 320/DC     ", 2 }, /* Perc 320/DC*/
+	{ aac_rx_init, "percraid", "DELL    ", "PERC 320/DC     ", 2, AAC_QUIRK_31BIT }, /* Perc 320/DC*/
 	{ aac_sa_init, "aacraid",  "ADAPTEC ", "Adaptec 5400S   ", 4 }, /* Adaptec 5400S (Mustang)*/
 	{ aac_sa_init, "aacraid",  "ADAPTEC ", "AAC-364         ", 4 }, /* Adaptec 5400S (Mustang)*/
-	{ aac_sa_init, "percraid", "DELL    ", "PERCRAID        ", 4 }, /* Dell PERC2 "Quad Channel" */
+	{ aac_sa_init, "percraid", "DELL    ", "PERCRAID        ", 4, AAC_QUIRK_31BIT }, /* Dell PERC2 "Quad Channel" */
 	{ aac_sa_init, "hpnraid",  "HP      ", "NetRAID         ", 4 }  /* HP NetRAID-4M */
 };
 
@@ -407,7 +407,16 @@ static int __devinit aac_probe_one(struct pci_dev *pdev,
 	if (pci_enable_device(pdev))
 		goto out;
 
-	if (pci_set_dma_mask(pdev, 0xFFFFFFFFULL))
+	if (pci_set_dma_mask(pdev, 0xFFFFFFFFULL) || 
+			pci_set_consistent_dma_mask(pdev, 0xFFFFFFFFULL))
+		goto out;
+	/*
+	 * If the quirk31 bit is set, the adapter needs adapter
+	 * to driver communication memory to be allocated below 2gig
+	 */
+	if (aac_drivers[index].quirks & AAC_QUIRK_31BIT) 
+		if (pci_set_dma_mask(pdev, 0x7FFFFFFFULL) ||
+				pci_set_consistent_dma_mask(pdev, 0x7FFFFFFFULL))
 			goto out;
 	
 	pci_set_master(pdev);
@@ -443,6 +452,15 @@ static int __devinit aac_probe_one(struct pci_dev *pdev,
 	if ((*aac_drivers[index].init)(aac , shost->unique_id))
 		goto out_free_fibs;
 
+	/*
+	 * If we had set a smaller DMA mask earlier, set it to 4gig
+	 * now since the adapter can dma data to at least a 4gig
+	 * address space.
+	 */
+	if (aac_drivers[index].quirks & AAC_QUIRK_31BIT)
+		if (pci_set_dma_mask(pdev, 0xFFFFFFFFULL))
+			goto out_free_fibs;
+
 	aac_get_adapter_info(aac);
 
 	/*