net/ibm/emac: add 8192 rx/tx fifo size

emac4syn chips has availability to use 8192 rx/tx fifo buffer sizes,
in current state if we set it up in dts 8192 as example, we will get
only 2048 which may impact on network speed.

Signed-off-by: Ivan Mikhaylov <ivan@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/ibm/emac/core.c b/drivers/net/ethernet/ibm/emac/core.c
index 7feff24..241db31 100644 (file)
--- a/drivers/net/ethernet/ibm/emac/core.c
+++ b/drivers/net/ethernet/ibm/emac/core.c
@@ -494,6 +494,9 @@ static u32 __emac_calc_base_mr1(struct emac_instance *dev, int tx_size, int rx_s
        case 16384:
                ret |= EMAC_MR1_RFS_16K;
                break;
+       case 8192:
+               ret |= EMAC4_MR1_RFS_8K;
+               break;
        case 4096:
                ret |= EMAC_MR1_RFS_4K;
                break;
@@ -516,6 +519,9 @@ static u32 __emac4_calc_base_mr1(struct emac_instance *dev, int tx_size, int rx_
        case 16384:
                ret |= EMAC4_MR1_TFS_16K;
                break;
+       case 8192:
+               ret |= EMAC4_MR1_TFS_8K;
+               break;
        case 4096:
                ret |= EMAC4_MR1_TFS_4K;
                break;

diff --git a/drivers/net/ethernet/ibm/emac/emac.h b/drivers/net/ethernet/ibm/emac/emac.h
index 5afcc27..d0a0e3b 100644 (file)
--- a/drivers/net/ethernet/ibm/emac/emac.h
+++ b/drivers/net/ethernet/ibm/emac/emac.h
@@ -151,9 +151,11 @@ struct emac_regs {
 
 #define EMAC4_MR1_RFS_2K               0x00100000
 #define EMAC4_MR1_RFS_4K               0x00180000
+#define EMAC4_MR1_RFS_8K               0x00200000
 #define EMAC4_MR1_RFS_16K              0x00280000
 #define EMAC4_MR1_TFS_2K                       0x00020000
 #define EMAC4_MR1_TFS_4K               0x00030000
+#define EMAC4_MR1_TFS_8K               0x00040000
 #define EMAC4_MR1_TFS_16K              0x00050000
 #define EMAC4_MR1_TR                   0x00008000
 #define EMAC4_MR1_MWSW_001             0x00001000