diff options
| author | Marek Vasut <marek.vasut@gmail.com> | 2011-11-08 23:18:10 +0000 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2011-11-11 11:36:56 +0100 |
| commit | be7e87e2ddbf338fcc733a50e3858df48e1e593b (patch) | |
| tree | e46d5b3f94eee004e91e62e869162a576a166b1a | |
| parent | 71a758e158e4610349dd1cabd80b8dbda8251eb1 (diff) | |
FEC: Add support for iMX28 quirks
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Ben Warren <biggerbadderben@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
| -rw-r--r-- | drivers/net/fec_mxc.c | 44 |
1 files changed, 42 insertions, 2 deletions
diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c index 0c0c7cd2c7..b05a4c0c9a 100644 --- a/drivers/net/fec_mxc.c +++ b/drivers/net/fec_mxc.c @@ -42,6 +42,14 @@ DECLARE_GLOBAL_DATA_PTR; #define CONFIG_FEC_XCV_TYPE MII100 #endif +/* + * The i.MX28 operates with packets in big endian. We need to swap them before + * sending and after receiving. + */ +#ifdef CONFIG_MX28 +#define CONFIG_FEC_MXC_SWAP_PACKET +#endif + #undef DEBUG struct nbuf { @@ -51,6 +59,32 @@ struct nbuf { uint8_t head[16]; /**< MAC header(6 + 6 + 2) + 2(aligned) */ }; +#ifdef CONFIG_FEC_MXC_SWAP_PACKET +static void swap_packet(uint32_t *packet, int length) +{ + int i; + + for (i = 0; i < DIV_ROUND_UP(length, 4); i++) + packet[i] = __swab32(packet[i]); +} +#endif + +/* + * The i.MX28 has two ethernet interfaces, but they are not equal. + * Only the first one can access the MDIO bus. + */ +#ifdef CONFIG_MX28 +static inline struct ethernet_regs *fec_miiphy_fec_to_eth(struct fec_priv *fec) +{ + return (struct ethernet_regs *)MXS_ENET0_BASE; +} +#else +static inline struct ethernet_regs *fec_miiphy_fec_to_eth(struct fec_priv *fec) +{ + return fec->eth; +} +#endif + /* * MII-interface related functions */ @@ -59,7 +93,7 @@ static int fec_miiphy_read(const char *dev, uint8_t phyAddr, uint8_t regAddr, { struct eth_device *edev = eth_get_dev_by_name(dev); struct fec_priv *fec = (struct fec_priv *)edev->priv; - struct ethernet_regs *eth = fec->eth; + struct ethernet_regs *eth = fec_miiphy_fec_to_eth(fec); uint32_t reg; /* convenient holder for the PHY register */ uint32_t phy; /* convenient holder for the PHY */ @@ -117,7 +151,7 @@ static int fec_miiphy_write(const char *dev, uint8_t phyAddr, uint8_t regAddr, { struct eth_device *edev = eth_get_dev_by_name(dev); struct fec_priv *fec = (struct fec_priv *)edev->priv; - struct ethernet_regs *eth = fec->eth; + struct ethernet_regs *eth = fec_miiphy_fec_to_eth(fec); uint32_t reg; /* convenient holder for the PHY register */ uint32_t phy; /* convenient holder for the PHY */ @@ -572,6 +606,9 @@ static int fec_send(struct eth_device *dev, volatile void* packet, int length) * Note: We are always using the first buffer for transmission, * the second will be empty and only used to stop the DMA engine */ +#ifdef CONFIG_FEC_MXC_SWAP_PACKET + swap_packet((uint32_t *)packet, length); +#endif writew(length, &fec->tbd_base[fec->tbd_index].data_length); writel((uint32_t)packet, &fec->tbd_base[fec->tbd_index].data_pointer); /* @@ -668,6 +705,9 @@ static int fec_recv(struct eth_device *dev) /* * Fill the buffer and pass it to upper layers */ +#ifdef CONFIG_FEC_MXC_SWAP_PACKET + swap_packet((uint32_t *)frame->data, frame_length); +#endif memcpy(buff, frame->data, frame_length); NetReceive(buff, frame_length); len = frame_length; |