pasemi_mac: workaround for erratum 5971

pasemi_mac: workaround for erratum 5971

Implement workarounds for erratum 5971, where L2 hints aren't considered
properly unless the way hint is enabled on the interface. Since L2 isn't
setup to dedicate a way to headers, we need to reset the packet count
by hand so it won't run out of credits.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/net/pasemi_mac.h b/drivers/net/pasemi_mac.h
index 5a896aa87a99..db3393674ae7 100644
--- a/drivers/net/pasemi_mac.h
+++ b/drivers/net/pasemi_mac.h
@@ -210,6 +210,8 @@ enum {
 #define    PAS_DMA_RXINT_CFG_DHL_S      24
 #define    PAS_DMA_RXINT_CFG_DHL(x)     (((x) << PAS_DMA_RXINT_CFG_DHL_S) & \
                                          PAS_DMA_RXINT_CFG_DHL_M)
+#define    PAS_DMA_RXINT_CFG_LW         0x00200000
+#define    PAS_DMA_RXINT_CFG_L2         0x00100000
 #define    PAS_DMA_RXINT_CFG_WIF        0x00000002
 #define    PAS_DMA_RXINT_CFG_WIL        0x00000001
 
@@ -315,6 +317,12 @@ enum {
 #define    PAS_STATUS_SOFT              0x4000000000000000ull
 #define    PAS_STATUS_INT               0x8000000000000000ull
 
+#define PAS_IOB_COM_PKTHDRCNT           0x120
+#define    PAS_IOB_COM_PKTHDRCNT_PKTHDR1_M      0x0fff0000
+#define    PAS_IOB_COM_PKTHDRCNT_PKTHDR1_S      16
+#define    PAS_IOB_COM_PKTHDRCNT_PKTHDR0_M      0x00000fff
+#define    PAS_IOB_COM_PKTHDRCNT_PKTHDR0_S      0
+
 #define PAS_IOB_DMA_RXCH_CFG(i)         (0x1100 + (i)*4)
 #define    PAS_IOB_DMA_RXCH_CFG_CNTTH_M         0x00000fff
 #define    PAS_IOB_DMA_RXCH_CFG_CNTTH_S         0