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authorSiddarth Gore <gores@marvell.com>2010-01-19 11:09:07 +0530
committerBen Warren <biggerbadderben@gmail.com>2010-02-06 22:52:14 -0800
commite66b19ce6dbe6f91b18ba47273cbe89eb5a80e78 (patch)
tree9450084a596f4b71a956c22c0c04f84fc9e35079 /drivers/net
parenta1b322a98319de568b3bc38029ef7e123643c1e8 (diff)
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NET: kirkwood-egiga smi access fix
Although the datasheet mentions seperate smi registers for each port, using Port 1 smi register to access ethernet phys does not work. Hence only Port 0 smi register should be used to access all devices connected to the smi bus. This behavior is consistant with the mv643xx driver in the linux kernel. Signed-off-by: Siddarth Gore <gores@marvell.com> Acked-by: Prafulla Wadaskar <prafulla@marvell.com> Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/kirkwood_egiga.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/net/kirkwood_egiga.c b/drivers/net/kirkwood_egiga.c
index 07a86cd..2ad7fea 100644
--- a/drivers/net/kirkwood_egiga.c
+++ b/drivers/net/kirkwood_egiga.c
@@ -39,6 +39,7 @@
#include "kirkwood_egiga.h"
#define KIRKWOOD_PHY_ADR_REQUEST 0xee
+#define KWGBE_SMI_REG (((struct kwgbe_registers *)KW_EGIGA0_BASE)->smi)
/*
* smi_reg_read - miiphy_read callback function.
@@ -76,7 +77,7 @@ static int smi_reg_read(char *devname, u8 phy_adr, u8 reg_ofs, u16 * data)
/* wait till the SMI is not busy */
do {
/* read smi register */
- smi_reg = KWGBEREG_RD(regs->smi);
+ smi_reg = KWGBEREG_RD(KWGBE_SMI_REG);
if (timeout-- == 0) {
printf("Err..(%s) SMI busy timeout\n", __FUNCTION__);
return -EFAULT;
@@ -89,14 +90,14 @@ static int smi_reg_read(char *devname, u8 phy_adr, u8 reg_ofs, u16 * data)
| KWGBE_PHY_SMI_OPCODE_READ;
/* write the smi register */
- KWGBEREG_WR(regs->smi, smi_reg);
+ KWGBEREG_WR(KWGBE_SMI_REG, smi_reg);
/*wait till read value is ready */
timeout = KWGBE_PHY_SMI_TIMEOUT;
do {
/* read smi register */
- smi_reg = KWGBEREG_RD(regs->smi);
+ smi_reg = KWGBEREG_RD(KWGBE_SMI_REG);
if (timeout-- == 0) {
printf("Err..(%s) SMI read ready timeout\n",
__FUNCTION__);
@@ -107,7 +108,7 @@ static int smi_reg_read(char *devname, u8 phy_adr, u8 reg_ofs, u16 * data)
/* Wait for the data to update in the SMI register */
for (timeout = 0; timeout < KWGBE_PHY_SMI_TIMEOUT; timeout++) ;
- *data = (u16) (KWGBEREG_RD(regs->smi) & KWGBE_PHY_SMI_DATA_MASK);
+ *data = (u16) (KWGBEREG_RD(KWGBE_SMI_REG) & KWGBE_PHY_SMI_DATA_MASK);
debug("%s:(adr %d, off %d) value= %04x\n", __FUNCTION__, phy_adr,
reg_ofs, *data);
@@ -150,7 +151,7 @@ static int smi_reg_write(char *devname, u8 phy_adr, u8 reg_ofs, u16 data)
timeout = KWGBE_PHY_SMI_TIMEOUT;
do {
/* read smi register */
- smi_reg = KWGBEREG_RD(regs->smi);
+ smi_reg = KWGBEREG_RD(KWGBE_SMI_REG);
if (timeout-- == 0) {
printf("Err..(%s) SMI busy timeout\n", __FUNCTION__);
return -ETIME;
@@ -164,7 +165,7 @@ static int smi_reg_write(char *devname, u8 phy_adr, u8 reg_ofs, u16 data)
smi_reg &= ~KWGBE_PHY_SMI_OPCODE_READ;
/* write the smi register */
- KWGBEREG_WR(regs->smi, smi_reg);
+ KWGBEREG_WR(KWGBE_SMI_REG, smi_reg);
return 0;
}