pasemi_mac: add support for setting MTU

Currently keeping it at 1500 bytes or below since jumbo frames need
special checksum offload on TX.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/net/pasemi_mac.h b/drivers/net/pasemi_mac.h
index 39d325940a76..99e7b9329a6f 100644
--- a/drivers/net/pasemi_mac.h
+++ b/drivers/net/pasemi_mac.h
@@ -59,6 +59,7 @@ struct pasemi_mac {
         struct phy_device *phydev;
         struct napi_struct napi;
 
+        int             bufsz; /* RX ring buffer size */
         u8              type;
 #define MAC_TYPE_GMAC   1
 #define MAC_TYPE_XAUI   2
@@ -96,6 +97,7 @@ struct pasemi_mac_buffer {
 /* MAC CFG register offsets */
 enum {
         PAS_MAC_CFG_PCFG = 0x80,
+        PAS_MAC_CFG_MACCFG = 0x84,
         PAS_MAC_CFG_ADR0 = 0x8c,
         PAS_MAC_CFG_ADR1 = 0x90,
         PAS_MAC_CFG_TXP = 0x98,
@@ -132,6 +134,18 @@ enum {
 #define PAS_MAC_CFG_PCFG_SPD_100M       0x00000001
 #define PAS_MAC_CFG_PCFG_SPD_1G         0x00000002
 #define PAS_MAC_CFG_PCFG_SPD_10G        0x00000003
+
+#define PAS_MAC_CFG_MACCFG_TXT_M        0x70000000
+#define PAS_MAC_CFG_MACCFG_TXT_S        28
+#define PAS_MAC_CFG_MACCFG_PRES_M       0x0f000000
+#define PAS_MAC_CFG_MACCFG_PRES_S       24
+#define PAS_MAC_CFG_MACCFG_MAXF_M       0x00ffff00
+#define PAS_MAC_CFG_MACCFG_MAXF_S       8
+#define PAS_MAC_CFG_MACCFG_MAXF(x)      (((x) << PAS_MAC_CFG_MACCFG_MAXF_S) & \
+                                         PAS_MAC_CFG_MACCFG_MAXF_M)
+#define PAS_MAC_CFG_MACCFG_MINF_M       0x000000ff
+#define PAS_MAC_CFG_MACCFG_MINF_S       0
+
 #define PAS_MAC_CFG_TXP_FCF             0x01000000
 #define PAS_MAC_CFG_TXP_FCE             0x00800000
 #define PAS_MAC_CFG_TXP_FC              0x00400000