Eric Lee / smarc-fsl-linux-kernel

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Commit 58933c643f86651decc4818cf680f9ec3b0460d2

Authored by Dave Liu
Committed by David S. Miller
1 parent d3af9dd04f

ucc_geth: Fix the wrong the Rx/Tx FIFO size 

current the Rx/Tx FIFO size settings cause problem
when four UEC ethernets work simultaneously.

eg: GETH1, UEM-J15, GETH2, UEC-J5 on 8569MDS board

 $ ifconfig eth0 10.193.20.166
 $ ifconfig eth1 10.193.20.167
 $ ifconfig eth2 10.193.20.168
 then
 $ ifconfig eth3 10.193.20.169

The fourth ethernet will cause all of interface broken,
you cann't ping successfully any more.
The patch fix this issue for MPC8569 Rev1.0 and Rev2.0

Signed-off-by: Dave Liu <daveliu@freescale.com>
Acked-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Showing 1 changed file with 7 additions and 6 deletions Side-by-side Diff

drivers/net/ucc_geth.h
Diff comments   View file @ 58933c6
... ... @@ -838,13 +838,13 @@
838 838 using the maximum is
839 839 easier */
840 840 #define UCC_GETH_SEND_QUEUE_QUEUE_DESCRIPTOR_ALIGNMENT 32
841   -#define UCC_GETH_SCHEDULER_ALIGNMENT 4 /* This is a guess */
  841 +#define UCC_GETH_SCHEDULER_ALIGNMENT 8 /* This is a guess */
842 842 #define UCC_GETH_TX_STATISTICS_ALIGNMENT 4 /* This is a guess */
843 843 #define UCC_GETH_RX_STATISTICS_ALIGNMENT 4 /* This is a guess */
844 844 #define UCC_GETH_RX_INTERRUPT_COALESCING_ALIGNMENT 64
845 845 #define UCC_GETH_RX_BD_QUEUES_ALIGNMENT 8 /* This is a guess */
846 846 #define UCC_GETH_RX_PREFETCHED_BDS_ALIGNMENT 128 /* This is a guess */
847   -#define UCC_GETH_RX_EXTENDED_FILTERING_GLOBAL_PARAMETERS_ALIGNMENT 4 /* This
  847 +#define UCC_GETH_RX_EXTENDED_FILTERING_GLOBAL_PARAMETERS_ALIGNMENT 8 /* This
848 848 is a
849 849 guess
850 850 */
851 851  
852 852  
... ... @@ -899,16 +899,17 @@
899 899 #define UCC_GETH_UTFS_INIT 512 /* Tx virtual FIFO size
900 900 */
901 901 #define UCC_GETH_UTFET_INIT 256 /* 1/2 utfs */
902   -#define UCC_GETH_UTFTT_INIT 128
  902 +#define UCC_GETH_UTFTT_INIT 512
903 903 /* Gigabit Ethernet (1000 Mbps) */
904 904 #define UCC_GETH_URFS_GIGA_INIT 4096/*2048*/ /* Rx virtual
905 905 FIFO size */
906 906 #define UCC_GETH_URFET_GIGA_INIT 2048/*1024*/ /* 1/2 urfs */
907 907 #define UCC_GETH_URFSET_GIGA_INIT 3072/*1536*/ /* 3/4 urfs */
908   -#define UCC_GETH_UTFS_GIGA_INIT 8192/*2048*/ /* Tx virtual
  908 +#define UCC_GETH_UTFS_GIGA_INIT 4096/*2048*/ /* Tx virtual
909 909 FIFO size */
910   -#define UCC_GETH_UTFET_GIGA_INIT 4096/*1024*/ /* 1/2 utfs */
911   -#define UCC_GETH_UTFTT_GIGA_INIT 0x400/*0x40*/ /* */
  910 +#define UCC_GETH_UTFET_GIGA_INIT 2048/*1024*/ /* 1/2 utfs */
  911 +#define UCC_GETH_UTFTT_GIGA_INIT 4096/*0x40*/ /* Tx virtual
  912 + FIFO size */
912 913  
913 914 #define UCC_GETH_REMODER_INIT 0 /* bits that must be
914 915 set */