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ColdFire: Fix ethernet hang issue for mcf547x_8x

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The ethernet hang is caused by receiving buffer in DRAM is not
yet ready due to access cycles require longer time in DRAM.
Relocate DMA buffer descriptors from DRAM to internal SRAM.

Signed-off-by: TsiChung Liew <Tsi-Chung.Liew@freescale.com>
This commit is contained in:
TsiChung Liew 2008-04-30 12:11:19 -05:00 committed by Wolfgang Denk
parent 886d90176f
commit f32f7fe7bd
3 changed files with 23 additions and 1 deletions
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22
drivers/net/fsl_mcdmafec.c
View file

@ -95,7 +95,11 @@ struct fec_info_dma fec_info[] = {
0, /* duplex and speed */
0, /* phy name */
0, /* phy name init */
#ifdef CFG_DMA_USE_INTSRAM
DBUF_LENGTH, /* RX BD */
#else
0, /* RX BD */
#endif
0, /* TX BD */
0, /* rx Index */
0, /* tx Index */
@ -164,7 +168,8 @@ static void dbg_fec_regs(struct eth_device *dev)
}
#endif
static void set_fec_duplex_speed(volatile fecdma_t * fecp, bd_t * bd, int dup_spd)
static void set_fec_duplex_speed(volatile fecdma_t * fecp, bd_t * bd,
int dup_spd)
{
if ((dup_spd >> 16) == FULL) {
/* Set maximum frame length */
@ -513,6 +518,9 @@ int mcdmafec_initialize(bd_t * bis)
{
struct eth_device *dev;
int i;
#ifdef CFG_DMA_USE_INTSRAM
u32 tmp = CFG_INTSRAM + 0x2000;
#endif
for (i = 0; i < sizeof(fec_info) / sizeof(fec_info[0]); i++) {
@ -533,6 +541,17 @@ int mcdmafec_initialize(bd_t * bis)
dev->recv = fec_recv;
/* setup Receive and Transmit buffer descriptor */
#ifdef CFG_DMA_USE_INTSRAM
fec_info[i].rxbd = (int)fec_info[i].rxbd + tmp;
tmp = fec_info[i].rxbd;
fec_info[i].txbd =
(int)fec_info[i].txbd + tmp + (PKTBUFSRX * sizeof(cbd_t));
tmp = fec_info[i].txbd;
fec_info[i].txbuf =
(int)fec_info[i].txbuf + tmp +
(CFG_TX_ETH_BUFFER * sizeof(cbd_t));
tmp = fec_info[i].txbuf;
#else
fec_info[i].rxbd =
(cbd_t *) memalign(CFG_CACHELINE_SIZE,
(PKTBUFSRX * sizeof(cbd_t)));
@ -541,6 +560,7 @@ int mcdmafec_initialize(bd_t * bis)
(CFG_TX_ETH_BUFFER * sizeof(cbd_t)));
fec_info[i].txbuf =
(char *)memalign(CFG_CACHELINE_SIZE, DBUF_LENGTH);
#endif
#ifdef ET_DEBUG
printf("rxbd %x txbd %x\n",

1
include/configs/M5475EVB.h
View file

@ -72,6 +72,7 @@
# define CONFIG_MII_INIT 1
# define CONFIG_HAS_ETH1
# define CFG_DMA_USE_INTSRAM 1
# define CFG_DISCOVER_PHY
# define CFG_RX_ETH_BUFFER 32
# define CFG_TX_ETH_BUFFER 48

1
include/configs/M5485EVB.h
View file

@ -72,6 +72,7 @@
# define CONFIG_MII_INIT 1
# define CONFIG_HAS_ETH1
# define CFG_DMA_USE_INTSRAM 1
# define CFG_DISCOVER_PHY
# define CFG_RX_ETH_BUFFER 32
# define CFG_TX_ETH_BUFFER 48