[U-Boot-Users] [PATCH 3/9 RESUBMIT] Add Ethernet 1000BASE-X support for PPC4xx
Larry Johnson
lrj at arlinx.com
Thu Dec 27 16:50:55 CET 2007
This patch adds a new switch: "CONFIG_PHY_DYNAMIC_ANEG". When this symbol
is defined, the PHY will advertise it's capabilities for autonegotiation
based on the capabilities shown in the PHY's status registers, including
1000BASE-X. When "CONFIG_PHY_DYNAMIC_ANEG" is not defined, the PHY will
advertise hard-coded capabilities, as before.
Signed-off-by: Larry Johnson <lrj at acm.org>
---
cpu/ppc4xx/miiphy.c | 166 +++++++++++++++++++++++++++++++++++----------------
1 files changed, 114 insertions(+), 52 deletions(-)
diff --git a/cpu/ppc4xx/miiphy.c b/cpu/ppc4xx/miiphy.c
index 98ba0a7..4216f0b 100644
--- a/cpu/ppc4xx/miiphy.c
+++ b/cpu/ppc4xx/miiphy.c
@@ -27,19 +27,6 @@
|
| Author: Mark Wisner
|
- | Change Activity-
- |
- | Date Description of Change BY
- | --------- --------------------- ---
- | 05-May-99 Created MKW
- | 01-Jul-99 Changed clock setting of sta_reg from 66Mhz to 50Mhz to
- | better match OPB speed. Also modified delay times. JWB
- | 29-Jul-99 Added Full duplex support MKW
- | 24-Aug-99 Removed printf from dp83843_duplex() JWB
- | 19-Jul-00 Ported to esd cpci405 sr
- | 23-Dec-03 Ported from miiphy.c to 440GX Travis Sawyer TBS
- | <travis.sawyer at sandburst.com>
- |
+-----------------------------------------------------------------------------*/
#include <common.h>
@@ -61,7 +48,6 @@ void miiphy_dump (char *devname, unsigned char addr)
unsigned long i;
unsigned short data;
-
for (i = 0; i < 0x1A; i++) {
if (miiphy_read (devname, addr, i, &data)) {
printf ("read error for reg %lx\n", i);
@@ -76,15 +62,86 @@ void miiphy_dump (char *devname, unsigned char addr)
} /* end for loop */
} /* end dump */
-
/***********************************************************/
/* (Re)start autonegotiation */
/***********************************************************/
int phy_setup_aneg (char *devname, unsigned char addr)
{
- unsigned short ctl, adv;
+ u16 bmcr;
+
+#if defined(CONFIG_PHY_DYNAMIC_ANEG)
+ /*
+ * Set up advertisement based on capablilities reported by the PHY.
+ * This should work for both copper and fiber.
+ */
+ u16 bmsr;
+#if defined(CONFIG_PHY_GIGE)
+ u16 exsr = 0x0000;
+#endif
+
+ miiphy_read (devname, addr, PHY_BMSR, &bmsr);
+
+#if defined(CONFIG_PHY_GIGE)
+ if (bmsr & PHY_BMSR_EXT_STAT)
+ miiphy_read (devname, addr, PHY_EXSR, &exsr);
+
+ if (exsr & (PHY_EXSR_1000XF | PHY_EXSR_1000XH)) {
+ /* 1000BASE-X */
+ u16 anar = 0x0000;
+
+ if (exsr & PHY_EXSR_1000XF)
+ anar |= PHY_X_ANLPAR_FD;
+
+ if (exsr & PHY_EXSR_1000XH)
+ anar |= PHY_X_ANLPAR_HD;
+
+ miiphy_write (devname, addr, PHY_ANAR, anar);
+ } else
+#endif
+ {
+ u16 anar, btcr;
+
+ miiphy_read (devname, addr, PHY_ANAR, &anar);
+ anar &= ~(0x5000 | PHY_ANLPAR_T4 | PHY_ANLPAR_TXFD |
+ PHY_ANLPAR_TX | PHY_ANLPAR_10FD | PHY_ANLPAR_10);
+
+ miiphy_read (devname, addr, PHY_1000BTCR, &btcr);
+ btcr &= ~(0x00FF | PHY_1000BTCR_1000FD | PHY_1000BTCR_1000HD);
+
+ if (bmsr & PHY_BMSR_100T4)
+ anar |= PHY_ANLPAR_T4;
+
+ if (bmsr & PHY_BMSR_100TXF)
+ anar |= PHY_ANLPAR_TXFD;
+
+ if (bmsr & PHY_BMSR_100TXH)
+ anar |= PHY_ANLPAR_TX;
+
+ if (bmsr & PHY_BMSR_10TF)
+ anar |= PHY_ANLPAR_10FD;
+
+ if (bmsr & PHY_BMSR_10TH)
+ anar |= PHY_ANLPAR_10;
+
+ miiphy_write (devname, addr, PHY_ANAR, anar);
+
+#if defined(CONFIG_PHY_GIGE)
+ if (exsr & PHY_EXSR_1000TF)
+ btcr |= PHY_1000BTCR_1000FD;
+
+ if (exsr & PHY_EXSR_1000TH)
+ btcr |= PHY_1000BTCR_1000HD;
+
+ miiphy_write (devname, addr, PHY_1000BTCR, btcr);
+#endif
+ }
+
+#else /* defined(CONFIG_PHY_DYNAMIC_ANEG) */
+ /*
+ * Set up standard advertisement
+ */
+ u16 adv;
- /* Setup standard advertise */
miiphy_read (devname, addr, PHY_ANAR, &adv);
adv |= (PHY_ANLPAR_ACK | PHY_ANLPAR_RF | PHY_ANLPAR_T4 |
PHY_ANLPAR_TXFD | PHY_ANLPAR_TX | PHY_ANLPAR_10FD |
@@ -95,15 +152,16 @@ int phy_setup_aneg (char *devname, unsigned char addr)
adv |= (0x0300);
miiphy_write (devname, addr, PHY_1000BTCR, adv);
+#endif /* defined(CONFIG_PHY_DYNAMIC_ANEG) */
+
/* Start/Restart aneg */
- miiphy_read (devname, addr, PHY_BMCR, &ctl);
- ctl |= (PHY_BMCR_AUTON | PHY_BMCR_RST_NEG);
- miiphy_write (devname, addr, PHY_BMCR, ctl);
+ miiphy_read (devname, addr, PHY_BMCR, &bmcr);
+ bmcr |= (PHY_BMCR_AUTON | PHY_BMCR_RST_NEG);
+ miiphy_write (devname, addr, PHY_BMCR, bmcr);
return 0;
}
-
/***********************************************************/
/* read a phy reg and return the value with a rc */
/***********************************************************/
@@ -116,19 +174,23 @@ unsigned int miiphy_getemac_offset (void)
/* Need to find out which mdi port we're using */
zmii = in_be32((void *)ZMII_FER);
- if (zmii & (ZMII_FER_MDI << ZMII_FER_V (0))) {
+ if (zmii & (ZMII_FER_MDI << ZMII_FER_V (0)))
/* using port 0 */
eoffset = 0;
- } else if (zmii & (ZMII_FER_MDI << ZMII_FER_V (1))) {
+
+ else if (zmii & (ZMII_FER_MDI << ZMII_FER_V (1)))
/* using port 1 */
eoffset = 0x100;
- } else if (zmii & (ZMII_FER_MDI << ZMII_FER_V (2))) {
+
+ else if (zmii & (ZMII_FER_MDI << ZMII_FER_V (2)))
/* using port 2 */
eoffset = 0x400;
- } else if (zmii & (ZMII_FER_MDI << ZMII_FER_V (3))) {
+
+ else if (zmii & (ZMII_FER_MDI << ZMII_FER_V (3)))
/* using port 3 */
eoffset = 0x600;
- } else {
+
+ else {
/* None of the mdi ports are enabled! */
/* enable port 0 */
zmii |= ZMII_FER_MDI << ZMII_FER_V (0);
@@ -156,21 +218,20 @@ unsigned int miiphy_getemac_offset (void)
#endif
}
-
-int emac4xx_miiphy_read (char *devname, unsigned char addr,
- unsigned char reg, unsigned short *value)
+int emac4xx_miiphy_read (char *devname, unsigned char addr, unsigned char reg,
+ unsigned short *value)
{
unsigned long sta_reg; /* STA scratch area */
unsigned long i;
unsigned long emac_reg;
-
emac_reg = miiphy_getemac_offset ();
/* see if it is ready for 1000 nsec */
i = 0;
/* see if it is ready for sec */
- while ((in_be32((void *)EMAC_STACR + emac_reg) & EMAC_STACR_OC) == EMAC_STACR_OC_MASK) {
+ while ((in_be32((void *)EMAC_STACR + emac_reg) & EMAC_STACR_OC) ==
+ EMAC_STACR_OC_MASK) {
udelay (7);
if (i > 5) {
#ifdef ET_DEBUG
@@ -187,10 +248,10 @@ int emac4xx_miiphy_read (char *devname, unsigned char addr,
#if defined(CONFIG_440GX) || defined(CONFIG_440SPE) || \
defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
defined(CONFIG_405EX)
-#if defined(CONFIG_IBM_EMAC4_V4) /* EMAC4 V4 changed bit setting */
- sta_reg = (sta_reg & ~EMAC_STACR_OP_MASK) | EMAC_STACR_READ;
+#if defined(CONFIG_IBM_EMAC4_V4) /* EMAC4 V4 changed bit setting */
+ sta_reg = (sta_reg & ~EMAC_STACR_OP_MASK) | EMAC_STACR_READ;
#else
- sta_reg |= EMAC_STACR_READ;
+ sta_reg |= EMAC_STACR_READ;
#endif
#else
sta_reg = (sta_reg | EMAC_STACR_READ) & ~EMAC_STACR_CLK_100MHZ;
@@ -211,37 +272,34 @@ int emac4xx_miiphy_read (char *devname, unsigned char addr,
sta_reg = in_be32((void *)EMAC_STACR + emac_reg);
#ifdef ET_DEBUG
- printf ("a21: read : EMAC_STACR=0x%0x\n", sta_reg); /* test-only */
+ printf ("a21: read : EMAC_STACR=0x%0x\n", sta_reg); /* test-only */
#endif
i = 0;
while ((sta_reg & EMAC_STACR_OC) == EMAC_STACR_OC_MASK) {
udelay (7);
- if (i > 5) {
+ if (i > 5)
return -1;
- }
+
i++;
sta_reg = in_be32((void *)EMAC_STACR + emac_reg);
#ifdef ET_DEBUG
printf ("a22: read : EMAC_STACR=0x%0x\n", sta_reg); /* test-only */
#endif
}
- if ((sta_reg & EMAC_STACR_PHYE) != 0) {
+ if ((sta_reg & EMAC_STACR_PHYE) != 0)
return -1;
- }
- *value = *(short *) (&sta_reg);
+ *value = *(short *)(&sta_reg);
return 0;
-
} /* phy_read */
-
/***********************************************************/
/* write a phy reg and return the value with a rc */
/***********************************************************/
-int emac4xx_miiphy_write (char *devname, unsigned char addr,
- unsigned char reg, unsigned short value)
+int emac4xx_miiphy_write (char *devname, unsigned char addr, unsigned char reg,
+ unsigned short value)
{
unsigned long sta_reg; /* STA scratch area */
unsigned long i;
@@ -251,9 +309,11 @@ int emac4xx_miiphy_write (char *devname, unsigned char addr,
/* see if it is ready for 1000 nsec */
i = 0;
- while ((in_be32((void *)EMAC_STACR + emac_reg) & EMAC_STACR_OC) == EMAC_STACR_OC_MASK) {
+ while ((in_be32((void *)EMAC_STACR + emac_reg) & EMAC_STACR_OC) ==
+ EMAC_STACR_OC_MASK) {
if (i > 5)
return -1;
+
udelay (7);
i++;
}
@@ -263,10 +323,10 @@ int emac4xx_miiphy_write (char *devname, unsigned char addr,
#if defined(CONFIG_440GX) || defined(CONFIG_440SPE) || \
defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
defined(CONFIG_405EX)
-#if defined(CONFIG_IBM_EMAC4_V4) /* EMAC4 V4 changed bit setting */
- sta_reg = (sta_reg & ~EMAC_STACR_OP_MASK) | EMAC_STACR_WRITE;
+#if defined(CONFIG_IBM_EMAC4_V4) /* EMAC4 V4 changed bit setting */
+ sta_reg = (sta_reg & ~EMAC_STACR_OP_MASK) | EMAC_STACR_WRITE;
#else
- sta_reg |= EMAC_STACR_WRITE;
+ sta_reg |= EMAC_STACR_WRITE;
#endif
#else
sta_reg = (sta_reg | EMAC_STACR_WRITE) & ~EMAC_STACR_CLK_100MHZ;
@@ -278,8 +338,8 @@ int emac4xx_miiphy_write (char *devname, unsigned char addr,
!defined(CONFIG_405EX)
sta_reg = sta_reg | CONFIG_PHY_CLK_FREQ; /* Set clock frequency (PLB freq. dependend) */
#endif
- sta_reg = sta_reg | ((unsigned long) addr << 5);/* Phy address */
- sta_reg = sta_reg | EMAC_STACR_OC_MASK; /* new IBM emac v4 */
+ sta_reg = sta_reg | ((unsigned long)addr << 5); /* Phy address */
+ sta_reg = sta_reg | EMAC_STACR_OC_MASK; /* new IBM emac v4 */
memcpy (&sta_reg, &value, 2); /* put in data */
out_be32((void *)EMAC_STACR + emac_reg, sta_reg);
@@ -288,12 +348,13 @@ int emac4xx_miiphy_write (char *devname, unsigned char addr,
i = 0;
sta_reg = in_be32((void *)EMAC_STACR + emac_reg);
#ifdef ET_DEBUG
- printf ("a31: read : EMAC_STACR=0x%0x\n", sta_reg); /* test-only */
+ printf ("a31: read : EMAC_STACR=0x%0x\n", sta_reg); /* test-only */
#endif
while ((sta_reg & EMAC_STACR_OC) == EMAC_STACR_OC_MASK) {
udelay (7);
if (i > 5)
return -1;
+
i++;
sta_reg = in_be32((void *)EMAC_STACR + emac_reg);
#ifdef ET_DEBUG
@@ -303,6 +364,7 @@ int emac4xx_miiphy_write (char *devname, unsigned char addr,
if ((sta_reg & EMAC_STACR_PHYE) != 0)
return -1;
+
return 0;
-} /* phy_write */
+} /* phy_write */
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