From: leonidk <leonidk@ad392aa1-c5ef-ae45-8dd8-e69d62a5ef86>
Date: Tue, 24 Mar 2009 16:03:15 +0000 (+0000)
Subject: [IBBUS] boot in SAN environment.
X-Git-Url: http://git.etherboot.org/mirror/winof/.git/commitdiff_plain/673b614500f050fc51ab5f5a683c58908ec7eeaa?ds=sidebyside

[IBBUS] boot in SAN environment.

this patch adds a 5s delay to wait for hca up for remote boot in SAN environment.

Signed off by: James Yang


git-svn-id: svn://openib.tc.cornell.edu/gen1/trunk@2045 ad392aa1-c5ef-ae45-8dd8-e69d62a5ef86
---

diff --git a/core/bus/kernel/bus_pnp.c b/core/bus/kernel/bus_pnp.c
index a93a7770..59978cae 100644
--- a/core/bus/kernel/bus_pnp.c
+++ b/core/bus/kernel/bus_pnp.c
@@ -653,9 +653,10 @@ fdo_query_bus_relations(
 	IN					IRP* const				p_irp, 
 		OUT				cl_irp_action_t* const	p_action )
 {
-	NTSTATUS			status;
+	NTSTATUS			status = STATUS_SUCCESS; /*default to success*/
 	bus_fdo_ext_t		*p_ext;
 	bus_filter_t		*p_bfi;
+	int					waitLoop = 0;
 
 	BUS_ENTER( BUS_DBG_PNP );
 
@@ -672,16 +673,18 @@ fdo_query_bus_relations(
 	p_bfi = p_ext->bus_filter;
 	CL_ASSERT( p_bfi->magic == BFI_MAGIC );
 
-	if ( p_bfi->ca_guid == 0ULL )
+	while ( p_bfi->ca_guid == 0ULL )
 	{
 		/* HCA not yet bound to a BFI slot (no PNP ADD event seen), no bus
 		 * relations yet.
 		 */
-		status = STATUS_SUCCESS;
-		BUS_PRINT(BUS_DBG_PNP, ("%s ca_guid %I64x\n",p_bfi->whoami,
+		BUS_PRINT(BUS_DBG_ERROR, ("%s ca_guid %I64x\n",p_bfi->whoami,
 								p_bfi->ca_guid));
+		cl_thread_suspend( 100 );	/* suspend for 100 ms */
+		waitLoop++;
+		if(waitLoop>50) break;
 	}
-	else
+	if ( p_bfi->ca_guid != 0ULL )
 	{
 		status = port_mgr_get_bus_relations( p_bfi->ca_guid, p_irp );
 		if( status == STATUS_SUCCESS || 
@@ -1270,6 +1273,7 @@ __fdo_set_power(
 	switch( p_io_stack->Parameters.Power.Type )
 	{
 	case SystemPowerState:
+#if 0
 		/*
 		 * Process on the way up the stack.  We cannot block since the 
 		 * power dispatch function can be called at elevated IRQL if the
@@ -1286,7 +1290,7 @@ __fdo_set_power(
 		*p_action = IrpDoNothing;
 		status = STATUS_PENDING;
 		break;
-
+#endif
 	case DevicePowerState:
 	default:
 		/* Pass down and let the PDO driver handle it. */