From 7676924571a1c7623d4ffc42560663db91a36bc3 Mon Sep 17 00:00:00 2001
From: Michael Brown <mcb30@ipxe.org>
Date: Wed, 24 Apr 2019 13:09:43 +0100
Subject: [PATCH] [intelxl] Provide a mechanism for handling "send to VF"
 events

Provide a weak stub function for handling the "send to VF" event used
for communications between the physical and virtual function drivers.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
---
 src/drivers/net/intelxl.c | 18 ++++++++++++++++++
 src/drivers/net/intelxl.h | 10 ++++++++++
 2 files changed, 28 insertions(+)

diff --git a/src/drivers/net/intelxl.c b/src/drivers/net/intelxl.c
index 1cf5cad4b..5cf89aa12 100644
--- a/src/drivers/net/intelxl.c
+++ b/src/drivers/net/intelxl.c
@@ -658,6 +658,21 @@ static int intelxl_admin_link ( struct net_device *netdev ) {
 	return 0;
 }
 
+/**
+ * Handle virtual function event (when VF driver is not present)
+ *
+ * @v netdev		Network device
+ * @v evt		Admin queue event descriptor
+ * @v buf		Admin queue event data buffer
+ */
+__weak void
+intelxlvf_admin_event ( struct net_device *netdev __unused,
+			struct intelxl_admin_descriptor *evt __unused,
+			union intelxl_admin_buffer *buf __unused ) {
+
+	/* Nothing to do */
+}
+
 /**
  * Refill admin event queue
  *
@@ -711,6 +726,9 @@ static void intelxl_poll_admin ( struct net_device *netdev ) {
 		case cpu_to_le16 ( INTELXL_ADMIN_LINK ):
 			intelxl_admin_link ( netdev );
 			break;
+		case cpu_to_le16 ( INTELXL_ADMIN_SEND_TO_VF ):
+			intelxlvf_admin_event ( netdev, evt, buf );
+			break;
 		default:
 			DBGC ( intelxl, "INTELXL %p admin event %#x "
 			       "unrecognised opcode %#04x\n", intelxl,
diff --git a/src/drivers/net/intelxl.h b/src/drivers/net/intelxl.h
index 5067b8074..6bd5e3e8b 100644
--- a/src/drivers/net/intelxl.h
+++ b/src/drivers/net/intelxl.h
@@ -289,6 +289,12 @@ struct intelxl_admin_link_params {
 /** Link is up */
 #define INTELXL_ADMIN_LINK_UP 0x01
 
+/** Admin queue Send Message to PF command */
+#define INTELXL_ADMIN_SEND_TO_PF 0x0801
+
+/** Admin queue Send Message to VF command */
+#define INTELXL_ADMIN_SEND_TO_VF 0x0802
+
 /** Admin queue command parameters */
 union intelxl_admin_params {
 	/** Additional data buffer command parameters */
@@ -824,4 +830,8 @@ struct intelxl_nic {
 	struct io_buffer *rx_iobuf[INTELXL_RX_NUM_DESC];
 };
 
+extern void intelxlvf_admin_event ( struct net_device *netdev,
+				    struct intelxl_admin_descriptor *evt,
+				    union intelxl_admin_buffer *buf );
+
 #endif /* _INTELXL_H */