[U-Boot] [PATCH 3/4] net: sh-eth: Add invalidate cache control for rmobile (ARM SoC)
Nobuhiro Iwamatsu
nobuhiro.iwamatsu.yj at renesas.com
Thu Aug 22 06:22:03 CEST 2013
The sh-eth of rmobile needs to use invalidate_cache* function.
This patch adds invalidate_cache* function.
Signed-off-by: Hisashi Nakamura <hisashi.nakamura.ak at renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj at renesas.com>
---
drivers/net/sh_eth.c | 31 ++++++++++++++++++++++++++-----
1 file changed, 26 insertions(+), 5 deletions(-)
diff --git a/drivers/net/sh_eth.c b/drivers/net/sh_eth.c
index c038929..b7dc625 100644
--- a/drivers/net/sh_eth.c
+++ b/drivers/net/sh_eth.c
@@ -26,13 +26,30 @@
# error "Please define CONFIG_SH_ETHER_PHY_ADDR"
#endif
-#ifdef CONFIG_SH_ETHER_CACHE_WRITEBACK
-#define flush_cache_wback(addr, len) \
- flush_dcache_range((u32)addr, (u32)(addr + len - 1))
+#if defined(CONFIG_SH_ETHER_CACHE_WRITEBACK) && !defined(CONFIG_SYS_DCACHE_OFF)
+#define flush_cache_wback(addr, len) \
+ flush_dcache_range((u32)addr, (u32)(addr + len - 1))
#else
#define flush_cache_wback(...)
#endif
+#if defined(CONFIG_SH_ETHER_CACHE_INVALIDATE) && defined(CONFIG_ARM)
+#define invalidate_cache(addr, len) \
+ { \
+ u32 line_size = CONFIG_SH_ETHER_ALIGNE_SIZE; \
+ u32 start, end; \
+ \
+ start = (u32)addr; \
+ end = start + len; \
+ start &= ~(line_size - 1); \
+ end = ((end + line_size - 1) & ~(line_size - 1)); \
+ \
+ invalidate_dcache_range(start, end); \
+ }
+#else
+#define invalidate_cache(...)
+#endif
+
#define TIMEOUT_CNT 1000
int sh_eth_send(struct eth_device *dev, void *packet, int len)
@@ -70,8 +87,11 @@ int sh_eth_send(struct eth_device *dev, void *packet, int len)
/* Wait until packet is transmitted */
timeout = TIMEOUT_CNT;
- while (port_info->tx_desc_cur->td0 & TD_TACT && timeout--)
+ do {
+ invalidate_cache(port_info->tx_desc_cur,
+ sizeof(struct tx_desc_s));
udelay(100);
+ } while (port_info->tx_desc_cur->td0 & TD_TACT && timeout--);
if (timeout < 0) {
printf(SHETHER_NAME ": transmit timeout\n");
@@ -95,12 +115,14 @@ int sh_eth_recv(struct eth_device *dev)
uchar *packet;
/* Check if the rx descriptor is ready */
+ invalidate_cache(port_info->rx_desc_cur, sizeof(struct rx_desc_s));
if (!(port_info->rx_desc_cur->rd0 & RD_RACT)) {
/* Check for errors */
if (!(port_info->rx_desc_cur->rd0 & RD_RFE)) {
len = port_info->rx_desc_cur->rd1 & 0xffff;
packet = (uchar *)
ADDR_TO_P2(port_info->rx_desc_cur->rd2);
+ invalidate_cache(packet, len);
NetReceive(packet, len);
}
@@ -109,7 +131,6 @@ int sh_eth_recv(struct eth_device *dev)
port_info->rx_desc_cur->rd0 = RD_RACT | RD_RDLE;
else
port_info->rx_desc_cur->rd0 = RD_RACT;
-
/* Point to the next descriptor */
port_info->rx_desc_cur++;
if (port_info->rx_desc_cur >=
--
1.8.3.2
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