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 17d25e7..c414374 100644 (file)
--- a/drivers/net/gianfar.h
+++ b/drivers/net/gianfar.h
@@ -262,6 +262,7 @@ extern const char gfar_driver_version[];
 
 #define next_bd(bdp, base, ring_size) skip_bd(bdp, 1, base, ring_size)
 
+#define RCTRL_TS_ENABLE        0x01000000
 #define RCTRL_PAL_MASK         0x001f0000
 #define RCTRL_VLEX             0x00002000
 #define RCTRL_FILREN           0x00001000
@@ -539,7 +540,7 @@ struct txbd8
 
 struct txfcb {
        u8      flags;
-       u8      reserved;
+       u8      ptp;    /* Flag to enable tx timestamping */
        u8      l4os;   /* Level 4 Header Offset */
        u8      l3os;   /* Level 3 Header Offset */
        u16     phcs;   /* Pseudo-header Checksum */
@@ -885,6 +886,7 @@ struct gfar {
 #define FSL_GIANFAR_DEV_HAS_MAGIC_PACKET       0x00000100
 #define FSL_GIANFAR_DEV_HAS_BD_STASHING                0x00000200
 #define FSL_GIANFAR_DEV_HAS_BUF_STASHING       0x00000400
+#define FSL_GIANFAR_DEV_HAS_TIMER              0x00000800
 
 #if (MAXGROUPS == 2)
 #define DEFAULT_MAPPING        0xAA
@@ -1023,6 +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
@@ -1047,6 +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];
@@ -1100,11 +1108,21 @@ struct gfar_private {
 
        /* Network Statistics */
        struct gfar_extra_stats extra_stats;
+
+       /* HW time stamping enabled flag */
+       int hwts_rx_en;
+       int hwts_tx_en;
 };
 
 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;