mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-08-23 05:38:38 +03:00
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31546 3c298f89-4303-0410-b956-a3cf2f4a3e73
181 lines
5.9 KiB
Diff
181 lines
5.9 KiB
Diff
From 92b8d976e58fe5e6eb97aedcaa46e80c924fbc04 Mon Sep 17 00:00:00 2001
|
|
From: Wang Huan <wanghuan@zch06.freescale.net>
|
|
Date: Mon, 5 Sep 2011 08:59:46 +0800
|
|
Subject: [PATCH] Fix FEC driver bugs for MCF547x/MCF548x
|
|
|
|
This patch fixed kernel panic during flood ping with huge packets.
|
|
It also fixed the data integrity errors when running iozone on an
|
|
NFSv3-mounted file system.
|
|
|
|
Signed-off-by: Jason Jin <jason.jin@freescale.com>
|
|
---
|
|
arch/m68k/include/asm/cf_548x_cacheflush.h | 45 ++++++++++++++++++++++++---
|
|
drivers/net/fec_m547x.c | 18 +++++-----
|
|
2 files changed, 49 insertions(+), 14 deletions(-)
|
|
|
|
--- a/arch/m68k/include/asm/cf_548x_cacheflush.h
|
|
+++ b/arch/m68k/include/asm/cf_548x_cacheflush.h
|
|
@@ -27,8 +27,8 @@
|
|
unsigned long end_set; \
|
|
\
|
|
start_set = 0; \
|
|
- end_set = (unsigned long)LAST_DCACHE_ADDR; \
|
|
- \
|
|
+ end_set = (unsigned long)LAST_ICACHE_ADDR; \
|
|
+ asm("nop"); \
|
|
for (set = start_set; set <= end_set; set += (0x10 - 3)) {\
|
|
asm volatile("cpushl %%ic,(%0)\n" \
|
|
"\taddq%.l #1,%0\n" \
|
|
@@ -48,7 +48,7 @@
|
|
\
|
|
start_set = 0; \
|
|
end_set = (unsigned long)LAST_DCACHE_ADDR; \
|
|
- \
|
|
+ asm("nop"); \
|
|
for (set = start_set; set <= end_set; set += (0x10 - 3)) { \
|
|
asm volatile("cpushl %%dc,(%0)\n" \
|
|
"\taddq%.l #1,%0\n" \
|
|
@@ -68,7 +68,7 @@
|
|
\
|
|
start_set = 0; \
|
|
end_set = (unsigned long)LAST_DCACHE_ADDR; \
|
|
- \
|
|
+ asm("nop"); \
|
|
for (set = start_set; set <= end_set; set += (0x10 - 3)) { \
|
|
asm volatile("cpushl %%bc,(%0)\n" \
|
|
"\taddq%.l #1,%0\n" \
|
|
@@ -240,12 +240,47 @@ extern inline void flush_icache_range(un
|
|
}
|
|
}
|
|
|
|
+static inline void flush_dcache_range(unsigned long address,
|
|
+ unsigned long endaddr)
|
|
+{
|
|
+ unsigned long set;
|
|
+ unsigned long start_set;
|
|
+ unsigned long end_set;
|
|
+
|
|
+ start_set = address & _DCACHE_SET_MASK;
|
|
+ end_set = endaddr & _DCACHE_SET_MASK;
|
|
+
|
|
+ if (start_set > end_set) {
|
|
+ /* from the begining to the lowest address */
|
|
+ for (set = 0; set <= end_set; set += (0x10 - 3)) {
|
|
+ asm volatile("cpushl %%dc,(%0)\n"
|
|
+ "\taddq%.l #1,%0\n"
|
|
+ "\tcpushl %%dc,(%0)\n"
|
|
+ "\taddq%.l #1,%0\n"
|
|
+ "\tcpushl %%dc,(%0)\n"
|
|
+ "\taddq%.l #1,%0\n"
|
|
+ "\tcpushl %%dc,(%0)" : "=a" (set) : "a" (set));
|
|
+ }
|
|
+ /* next loop will finish the cache ie pass the hole */
|
|
+ end_set = LAST_ICACHE_ADDR;
|
|
+ }
|
|
+ for (set = start_set; set <= end_set; set += (0x10 - 3)) {
|
|
+ asm volatile("cpushl %%dc,(%0)\n"
|
|
+ "\taddq%.l #1,%0\n"
|
|
+ "\tcpushl %%dc,(%0)\n"
|
|
+ "\taddq%.l #1,%0\n"
|
|
+ "\tcpushl %%dc,(%0)\n"
|
|
+ "\taddq%.l #1,%0\n"
|
|
+ "\tcpushl %%dc,(%0)" : "=a" (set) : "a" (set));
|
|
+ }
|
|
+}
|
|
+
|
|
static inline void copy_to_user_page(struct vm_area_struct *vma,
|
|
struct page *page, unsigned long vaddr,
|
|
void *dst, void *src, int len)
|
|
{
|
|
memcpy(dst, src, len);
|
|
- flush_icache_user_page(vma, page, vaddr, len);
|
|
+ flush_dcache();
|
|
}
|
|
static inline void copy_from_user_page(struct vm_area_struct *vma,
|
|
struct page *page, unsigned long vaddr,
|
|
--- a/drivers/net/fec_m547x.c
|
|
+++ b/drivers/net/fec_m547x.c
|
|
@@ -34,7 +34,7 @@
|
|
#include <asm/m5485sram.h>
|
|
#include <asm/virtconvert.h>
|
|
#include <asm/irq.h>
|
|
-
|
|
+#include <asm/cf_cacheflush.h>
|
|
#include "fec_m547x.h"
|
|
|
|
#ifdef CONFIG_FEC_548x_ENABLE_FEC2
|
|
@@ -97,7 +97,7 @@ static void fec_interrupt_fec_rx_handler
|
|
static irqreturn_t fec_interrupt_handler(int irq, void *dev_id);
|
|
static void fec_interrupt_fec_tx_handler_fec0(void);
|
|
static void fec_interrupt_fec_rx_handler_fec0(void);
|
|
-static void fec_interrupt_fec_reinit(unsigned long data);
|
|
+static void fec_interrupt_fec_reinit(struct net_device *dev);
|
|
|
|
/* default fec0 address */
|
|
unsigned char fec_mac_addr_fec0[6] = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x50 };
|
|
@@ -145,6 +145,7 @@ static int coldfire_fec_mdio_read(struct
|
|
#ifdef CONFIG_FEC_548x_SHARED_PHY
|
|
unsigned long base_addr = (unsigned long)FEC_BASE_ADDR_FEC0;
|
|
#else
|
|
+ struct net_device *dev = bus->priv;
|
|
unsigned long base_addr = (unsigned long) dev->base_addr;
|
|
#endif
|
|
int tries = 100;
|
|
@@ -179,6 +180,7 @@ static int coldfire_fec_mdio_write(struc
|
|
#ifdef CONFIG_FEC_548x_SHARED_PHY
|
|
unsigned long base_addr = (unsigned long)FEC_BASE_ADDR_FEC0;
|
|
#else
|
|
+ struct net_device *dev = bus->priv;
|
|
unsigned long base_addr = (unsigned long) dev->base_addr;
|
|
#endif
|
|
int tries = 100;
|
|
@@ -394,9 +396,6 @@ static int mcf547x_fec_open(struct net_d
|
|
|
|
dma_connect(channel, (int) fp->fecpriv_interrupt_fec_tx_handler);
|
|
|
|
- /* init tasklet for controller reinitialization */
|
|
- tasklet_init(&fp->fecpriv_tasklet_reinit,
|
|
- fec_interrupt_fec_reinit, (unsigned long) dev);
|
|
|
|
/* Reset FIFOs */
|
|
FEC_FECFRST(base_addr) |= FEC_SW_RST | FEC_RST_CTL;
|
|
@@ -790,6 +789,8 @@ static int mcf547x_fec_start_xmit(struct
|
|
|
|
/* flush data cache before initializing
|
|
* the descriptor and starting DMA */
|
|
+ flush_dcache_range(virt_to_phys(data_aligned),
|
|
+ virt_to_phys(data_aligned) + skb->len);
|
|
|
|
spin_lock_irq(&fp->fecpriv_lock);
|
|
|
|
@@ -1308,7 +1309,7 @@ irqreturn_t fec_interrupt_handler(int ir
|
|
netif_stop_queue(dev);
|
|
|
|
/* execute reinitialization as tasklet */
|
|
- tasklet_schedule(&fp->fecpriv_tasklet_reinit);
|
|
+ fec_interrupt_fec_reinit(dev);
|
|
|
|
fp->fecpriv_stat.rx_dropped++;
|
|
}
|
|
@@ -1343,10 +1344,9 @@ irqreturn_t fec_interrupt_handler(int ir
|
|
* when controller must be reinitialized.
|
|
*
|
|
*************************************************************************/
|
|
-void fec_interrupt_fec_reinit(unsigned long data)
|
|
+void fec_interrupt_fec_reinit(struct net_device *dev)
|
|
{
|
|
int i;
|
|
- struct net_device *dev = (struct net_device *)data;
|
|
struct fec_priv *fp = netdev_priv(dev);
|
|
unsigned long base_addr = (unsigned long) dev->base_addr;
|
|
|
|
@@ -1385,7 +1385,7 @@ void fec_interrupt_fec_reinit(unsigned l
|
|
fp->fecpriv_current_tx = fp->fecpriv_next_tx = 0;
|
|
|
|
/* flush entire data cache before restarting the DMA */
|
|
-
|
|
+ flush_dcache();
|
|
/* restart DMA from beginning */
|
|
MCD_startDma(fp->fecpriv_fec_rx_channel,
|
|
(char *) fp->fecpriv_rxdesc, 0,
|