[target/leon]: add preliminary LEON support

[openwrt/svn-archive/archive.git] / target / linux / leon / patches / 023-greth_handle_frame_error_interrupts.patch

diff --git a/target/linux/leon/patches/023-greth_handle_frame_error_interrupts.patch b/target/linux/leon/patches/023-greth_handle_frame_error_interrupts.patch
new file mode 100644 (file)
index 0000000..12bfb1c
--- /dev/null
+++ b/target/linux/leon/patches/023-greth_handle_frame_error_interrupts.patch
@@ -0,0 +1,49 @@
+From f62c047af910c9c9696db7b47472a3728b8100e8 Mon Sep 17 00:00:00 2001
+From: Daniel Hellstrom <daniel@gaisler.com>
+Date: Wed, 1 Dec 2010 11:56:22 +0100
+Subject: [PATCH] GRETH: handle frame error interrupts
+
+Not handling frame error interrupts are unlikly but may lead to dead
+lock if 128 error frames are recieved in a row.
+
+Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
+---
+ drivers/net/greth.c |    5 +++--
+ drivers/net/greth.h |    2 ++
+ 2 files changed, 5 insertions(+), 2 deletions(-)
+
+--- a/drivers/net/greth.c
++++ b/drivers/net/greth.c
+@@ -595,11 +595,12 @@ static irqreturn_t greth_interrupt(int i
+       status = GRETH_REGLOAD(greth->regs->status);
+ 
+       /* Handle rx and tx interrupts through poll */
+-      if (status & (GRETH_INT_RX | GRETH_INT_TX)) {
++      if (status & (GRETH_INT_RE | GRETH_INT_RX | GRETH_INT_TE | GRETH_INT_TX)) {
+ 
+               /* Clear interrupt status */
+               GRETH_REGSAVE(greth->regs->status,
+-                            status & (GRETH_INT_RX | GRETH_INT_TX));
++                            status & (GRETH_INT_RE | GRETH_INT_RX | 
++                                      GRETH_INT_TE | GRETH_INT_TX));
+ 
+               retval = IRQ_HANDLED;
+ 
+--- a/drivers/net/greth.h
++++ b/drivers/net/greth.h
+@@ -23,6 +23,7 @@
+ #define GRETH_BD_LEN 0x7FF
+ 
+ #define GRETH_TXEN 0x1
++#define GRETH_INT_TE 0x2
+ #define GRETH_INT_TX 0x8
+ #define GRETH_TXI 0x4
+ #define GRETH_TXBD_STATUS 0x0001C000
+@@ -35,6 +36,7 @@
+ #define GRETH_TXBD_ERR_UE 0x4000
+ #define GRETH_TXBD_ERR_AL 0x8000
+ 
++#define GRETH_INT_RE         0x1
+ #define GRETH_INT_RX         0x4
+ #define GRETH_RXEN           0x2
+ #define GRETH_RXI            0x8