diff options
| author | Remy Bohmer <linux@bohmer.net> | 2008-06-03 15:26:23 +0200 |
|---|---|---|
| committer | Ben Warren <biggerbadderben@gmail.com> | 2008-06-04 23:47:31 -0700 |
| commit | acba31847fad9ae40708cc2c9f3a634ec35f3416 (patch) | |
| tree | 7e7347b5f3cc22fcd23dd364bd625da7378418aa /drivers | |
| parent | 134e266253c02a7832560da59d394989c4f64453 (diff) | |
| download | blackbird-obmc-uboot-acba31847fad9ae40708cc2c9f3a634ec35f3416.tar.gz blackbird-obmc-uboot-acba31847fad9ae40708cc2c9f3a634ec35f3416.zip | |
DM9000: improve eth_send() routine
The eth_send routine of the U-boot DM9000x driver does not match the
DM9000 or DM9000A application notes/programming guides.
This change improves the stability of the DM9000A network controller.
This change has been tested with DM9000A, DM9000E, DM9000EP.
Signed-off-by: Remy Bohmer <linux@bohmer.net>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/dm9000x.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/net/dm9000x.c b/drivers/net/dm9000x.c index 05d07f3216..c6c24dd6fb 100644 --- a/drivers/net/dm9000x.c +++ b/drivers/net/dm9000x.c @@ -42,6 +42,9 @@ v1.2 03/18/2003 Weilun Huang <weilun_huang@davicom.com.tw>: 06/03/2008 Remy Bohmer <linux@bohmer.net> - Added autodetect of databus width. - Made debug code compile again. + - Adapt eth_send such that it matches the DM9000* + application notes. Needed to make it work properly + for DM9000A. These changes are tested with DM9000{A,EP,E} together with a 200MHz Atmel AT91SAM92161 core @@ -505,15 +508,16 @@ int eth_send(volatile void *packet, int length) { char *data_ptr; - u32 tmplen, i; int tmo; struct board_info *db = &dm9000_info; DM9000_DMP_PACKET("eth_send", packet, length); + DM9000_iow(DM9000_ISR, IMR_PTM); /* Clear Tx bit in ISR */ + /* Move data to DM9000 TX RAM */ data_ptr = (char *) packet; - DM9000_outb(DM9000_MWCMD, DM9000_IO); + DM9000_outb(DM9000_MWCMD, DM9000_IO); /* Prepare for TX-data */ /* push the data to the TX-fifo */ (db->outblk)(data_ptr, length); @@ -523,16 +527,19 @@ eth_send(volatile void *packet, int length) DM9000_iow(DM9000_TXPLH, (length >> 8) & 0xff); /* Issue TX polling command */ - DM9000_iow(DM9000_TCR, TCR_TXREQ); /* Cleared after TX complete */ + DM9000_iow(DM9000_TCR, TCR_TXREQ); /* Cleared after TX complete */ /* wait for end of transmission */ tmo = get_timer(0) + 5 * CFG_HZ; - while (DM9000_ior(DM9000_TCR) & TCR_TXREQ) { + while ( !(DM9000_ior(DM9000_NSR) & (NSR_TX1END | NSR_TX2END)) || + !(DM9000_ior(DM9000_ISR) & IMR_PTM) ) { if (get_timer(0) >= tmo) { printf("transmission timeout\n"); break; } } + DM9000_iow(DM9000_ISR, IMR_PTM); /* Clear Tx bit in ISR */ + DM9000_DBG("transmit done\n\n"); return 0; } |
