gianfar: Implement workaround for eTSEC76 erratum

[cascardo/linux.git] / drivers / net / gianfar.h

diff --git a/drivers/net/gianfar.h b/drivers/net/gianfar.h
index ac4a92e..c414374 100644 (file)
--- a/drivers/net/gianfar.h
+++ b/drivers/net/gianfar.h
@@ -1025,6 +1025,11 @@ struct gfar_priv_grp {
        char int_name_er[GFAR_INT_NAME_MAX];
 };
 
+enum gfar_errata {
+       GFAR_ERRATA_74          = 0x01,
+       GFAR_ERRATA_76          = 0x02,
+};
+
 /* Struct stolen almost completely (and shamelessly) from the FCC enet source
  * (Ok, that's not so true anymore, but there is a family resemblence)
  * The GFAR buffer descriptors track the ring buffers.  The rx_bd_base
@@ -1049,6 +1054,7 @@ struct gfar_private {
        struct device_node *node;
        struct net_device *ndev;
        struct of_device *ofdev;
+       enum gfar_errata errata;
 
        struct gfar_priv_grp gfargrp[MAXGROUPS];
        struct gfar_priv_tx_q *tx_queue[MAX_TX_QS];
@@ -1111,6 +1117,12 @@ struct gfar_private {
 extern unsigned int ftp_rqfpr[MAX_FILER_IDX + 1];
 extern unsigned int ftp_rqfcr[MAX_FILER_IDX + 1];
 
+static inline int gfar_has_errata(struct gfar_private *priv,
+                                 enum gfar_errata err)
+{
+       return priv->errata & err;
+}
+
 static inline u32 gfar_read(volatile unsigned __iomem *addr)
 {
        u32 val;