[intel] Add intelxvf_stats() to dump packet statistics registers

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/drivers/net/intelxvf.c

@@ -38,6 +38,31 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
  *
  */
 
+/******************************************************************************
+ *
+ * Diagnostics
+ *
+ ******************************************************************************
+ */
+
+/**
+ * Dump statistics
+ *
+ * @v intel		Intel device
+ */
+static __attribute__ (( unused )) void
+intelxvf_stats ( struct intel_nic *intel ) {
+
+	DBGC ( intel, "INTEL %p TX %d (%#x%08x) RX %d (%#x%08x) multi %d\n",
+	       intel, readl ( intel->regs + INTELXVF_GPTC ),
+	       readl ( intel->regs + INTELXVF_GOTCH ),
+	       readl ( intel->regs + INTELXVF_GOTCL ),
+	       readl ( intel->regs + INTELXVF_GPRC ),
+	       readl ( intel->regs + INTELXVF_GORCH ),
+	       readl ( intel->regs + INTELXVF_GORCL ),
+	       readl ( intel->regs + INTELXVF_MPRC ) );
+}
+
 /******************************************************************************
  *
  * Device reset

src/drivers/net/intelxvf.h

@@ -71,7 +71,28 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
 #define INTELXVF_SRRCTL_DESCTYPE_DEFAULT INTELXVF_SRRCTL_DESCTYPE ( 0x00 )
 #define INTELXVF_SRRCTL_DESCTYPE_MASK INTELXVF_SRRCTL_DESCTYPE ( 0x07 )
 
+/** Good Packets Received Count */
+#define INTELXVF_GPRC 0x101c
+
+/** Good Packets Received Count Low */
+#define INTELXVF_GORCL 0x1020
+
+/** Good Packets Received Count High */
+#define INTELXVF_GORCH 0x1024
+
+/* Multicast Packets Received Count */
+#define INTELXVF_MPRC 0x1034
+
 /** Transmit Descriptor register block */
 #define INTELXVF_TD 0x2000UL
 
+/** Good Packets Transmitted Count */
+#define INTELXVF_GPTC 0x201c
+
+/** Good Packets Transmitted Count Low */
+#define INTELXVF_GOTCL 0x2020
+
+/** Good Packets Transmitted Count High */
+#define INTELXVF_GOTCH 0x2024
+
 #endif /* _INTELXVF_H */