/*-----------------------------------------------------------------------------+
|
- | This source code has been made available to you by IBM on an AS-IS
- | basis. Anyone receiving this source is licensed under IBM
- | copyrights to use it in any way he or she deems fit, including
- | copying it, modifying it, compiling it, and redistributing it either
- | with or without modifications. No license under IBM patents or
- | patent applications is to be implied by the copyright license.
+ | This source code has been made available to you by IBM on an AS-IS
+ | basis. Anyone receiving this source is licensed under IBM
+ | copyrights to use it in any way he or she deems fit, including
+ | copying it, modifying it, compiling it, and redistributing it either
+ | with or without modifications. No license under IBM patents or
+ | patent applications is to be implied by the copyright license.
|
- | Any user of this software should understand that IBM cannot provide
- | technical support for this software and will not be responsible for
- | any consequences resulting from the use of this software.
+ | Any user of this software should understand that IBM cannot provide
+ | technical support for this software and will not be responsible for
+ | any consequences resulting from the use of this software.
|
- | Any person who transfers this source code or any derivative work
- | must include the IBM copyright notice, this paragraph, and the
- | preceding two paragraphs in the transferred software.
+ | Any person who transfers this source code or any derivative work
+ | must include the IBM copyright notice, this paragraph, and the
+ | preceding two paragraphs in the transferred software.
|
- | COPYRIGHT I B M CORPORATION 1995
- | LICENSED MATERIAL - PROGRAM PROPERTY OF I B M
+ | COPYRIGHT I B M CORPORATION 1995
+ | LICENSED MATERIAL - PROGRAM PROPERTY OF I B M
+-----------------------------------------------------------------------------*/
/*-----------------------------------------------------------------------------+
|
- | File Name: miiphy.c
+ | File Name: miiphy.c
|
- | Function: This module has utilities for accessing the MII PHY through
+ | Function: This module has utilities for accessing the MII PHY through
| the EMAC3 macro.
|
- | 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
+ | Author: Mark Wisner
|
+-----------------------------------------------------------------------------*/
+/* define DEBUG for debugging output (obviously ;-)) */
+#if 0
+#define DEBUG
+#endif
+
#include <common.h>
#include <asm/processor.h>
+#include <asm/io.h>
#include <ppc_asm.tmpl>
#include <commproc.h>
-#include <405gp_enet.h>
+#include <ppc4xx_enet.h>
#include <405_mal.h>
#include <miiphy.h>
-#if defined(CONFIG_405GP) || defined(CONFIG_440)
-
+#if !defined(CONFIG_PHY_CLK_FREQ)
+#define CONFIG_PHY_CLK_FREQ 0
+#endif
/***********************************************************/
-/* Dump out to the screen PHY regs */
+/* Dump out to the screen PHY regs */
/***********************************************************/
-void miiphy_dump (unsigned char addr)
+void miiphy_dump (char *devname, unsigned char addr)
{
unsigned long i;
unsigned short data;
-
for (i = 0; i < 0x1A; i++) {
- if (miiphy_read (addr, i, &data)) {
+ if (miiphy_read (devname, addr, i, &data)) {
printf ("read error for reg %lx\n", i);
return;
}
if (i == 0x07)
i = 0x0f;
- } /* end for loop */
-} /* end dump */
-
-
+ } /* end for loop */
+} /* end dump */
/***********************************************************/
-/* read a phy reg and return the value with a rc */
+/* (Re)start autonegotiation */
/***********************************************************/
-
-int miiphy_read (unsigned char addr, unsigned char reg,
- unsigned short *value)
+int phy_setup_aneg (char *devname, unsigned char addr)
{
- unsigned long sta_reg; /* STA scratch area */
- unsigned long i;
+ u16 bmcr;
- /* see if it is ready for 1000 nsec */
- i = 0;
+#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
- /* see if it is ready for sec */
- while ((in32 (EMAC_STACR) & EMAC_STACR_OC) == 0) {
- udelay (7);
- if (i > 5) {
- printf ("read err 1\n");
- return -1;
- }
- i++;
- }
- sta_reg = reg; /* reg address */
- /* set clock (50Mhz) and read flags */
- sta_reg = (sta_reg | EMAC_STACR_READ) & ~EMAC_STACR_CLK_100MHZ;
- sta_reg = sta_reg | (addr << 5); /* Phy address */
+ 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);
- out32 (EMAC_STACR, sta_reg);
-#if 0 /* test-only */
- printf ("a2: write: EMAC_STACR=0x%0x\n", sta_reg); /* test-only */
+ 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;
- sta_reg = in32 (EMAC_STACR);
- i = 0;
- while ((sta_reg & EMAC_STACR_OC) == 0) {
- udelay (7);
- if (i > 5) {
- printf ("read err 2\n");
- return -1;
- }
- i++;
- sta_reg = in32 (EMAC_STACR);
- }
- if ((sta_reg & EMAC_STACR_PHYE) != 0) {
- printf ("read err 3\n");
- printf ("a2: read: EMAC_STACR=0x%0lx, i=%d\n",
- sta_reg, (int) i); /* test-only */
- return -1;
+ 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
}
- *value = *(short *) (&sta_reg);
- return 0;
+#else /* defined(CONFIG_PHY_DYNAMIC_ANEG) */
+ /*
+ * Set up standard advertisement
+ */
+ u16 adv;
+
+ miiphy_read (devname, addr, PHY_ANAR, &adv);
+ adv |= (PHY_ANLPAR_ACK | PHY_ANLPAR_TXFD | PHY_ANLPAR_TX |
+ PHY_ANLPAR_10FD | PHY_ANLPAR_10);
+ miiphy_write (devname, addr, PHY_ANAR, adv);
+ miiphy_read (devname, addr, PHY_1000BTCR, &adv);
+ adv |= (0x0300);
+ miiphy_write (devname, addr, PHY_1000BTCR, adv);
-} /* phy_read */
+#endif /* defined(CONFIG_PHY_DYNAMIC_ANEG) */
+ /* Start/Restart aneg */
+ miiphy_read (devname, addr, PHY_BMCR, &bmcr);
+ bmcr |= (PHY_BMCR_AUTON | PHY_BMCR_RST_NEG);
+ miiphy_write (devname, addr, PHY_BMCR, bmcr);
+
+ return 0;
+}
/***********************************************************/
-/* write a phy reg and return the value with a rc */
+/* read a phy reg and return the value with a rc */
/***********************************************************/
-
-int miiphy_write (unsigned char addr, unsigned char reg,
- unsigned short value)
+/* AMCC_TODO:
+ * Find out of the choice for the emac for MDIO is from the bridges,
+ * i.e. ZMII or RGMII as approporiate. If the bridges are not used
+ * to determine the emac for MDIO, then is the SDR0_ETH_CFG[MDIO_SEL]
+ * used? If so, then this routine below does not apply to the 460EX/GT.
+ *
+ * sr: Currently on 460EX only EMAC0 works with MDIO, so we always
+ * return EMAC0 offset here
+ */
+unsigned int miiphy_getemac_offset (void)
{
- unsigned long sta_reg; /* STA scratch area */
- unsigned long i;
+#if (defined(CONFIG_440) && \
+ !defined(CONFIG_440SP) && !defined(CONFIG_440SPE) && \
+ !defined(CONFIG_460EX) && !defined(CONFIG_460GT)) && \
+ defined(CONFIG_NET_MULTI)
+ unsigned long zmii;
+ unsigned long eoffset;
- /* see if it is ready for 1000 nsec */
- i = 0;
+ /* Need to find out which mdi port we're using */
+ zmii = in_be32((void *)ZMII_FER);
- while ((in32 (EMAC_STACR) & EMAC_STACR_OC) == 0) {
- if (i > 5)
- return -1;
- udelay (7);
- i++;
+ if (zmii & (ZMII_FER_MDI << ZMII_FER_V (0)))
+ /* using port 0 */
+ eoffset = 0;
+
+ 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)))
+ /* using port 2 */
+ eoffset = 0x400;
+
+ else if (zmii & (ZMII_FER_MDI << ZMII_FER_V (3)))
+ /* using port 3 */
+ eoffset = 0x600;
+
+ else {
+ /* None of the mdi ports are enabled! */
+ /* enable port 0 */
+ zmii |= ZMII_FER_MDI << ZMII_FER_V (0);
+ out_be32((void *)ZMII_FER, zmii);
+ eoffset = 0;
+ /* need to soft reset port 0 */
+ zmii = in_be32((void *)EMAC_M0);
+ zmii |= EMAC_M0_SRST;
+ out_be32((void *)EMAC_M0, zmii);
}
- sta_reg = 0;
- sta_reg = reg; /* reg address */
- /* set clock (50Mhz) and read flags */
- sta_reg = (sta_reg | EMAC_STACR_WRITE) & ~EMAC_STACR_CLK_100MHZ;
- sta_reg = sta_reg | ((unsigned long) addr << 5); /* Phy address */
- memcpy (&sta_reg, &value, 2); /* put in data */
- out32 (EMAC_STACR, sta_reg);
+ return (eoffset);
+#else
+
+#if defined(CONFIG_NET_MULTI) && defined(CONFIG_405EX)
+ unsigned long rgmii;
+ int devnum = 1;
+
+ rgmii = in_be32((void *)RGMII_FER);
+ if (rgmii & (1 << (19 - devnum)))
+ return 0x100;
+#endif
+
+ return 0;
+#endif
+}
+
+static int emac_miiphy_wait(u32 emac_reg)
+{
+ u32 sta_reg;
+ int i;
/* wait for completion */
i = 0;
- sta_reg = in32 (EMAC_STACR);
- while ((sta_reg & EMAC_STACR_OC) == 0) {
- udelay (7);
- if (i > 5)
+ do {
+ sta_reg = in_be32((void *)EMAC_STACR + emac_reg);
+ if (i++ > 5) {
+ debug("%s [%d]: Timeout! EMAC_STACR=0x%0x\n", __func__,
+ __LINE__, sta_reg);
return -1;
- i++;
- sta_reg = in32 (EMAC_STACR);
- }
+ }
+ udelay(10);
+ } while ((sta_reg & EMAC_STACR_OC) == EMAC_STACR_OC_MASK);
+
+ return 0;
+}
+
+static int emac_miiphy_command(u8 addr, u8 reg, int cmd, u16 value)
+{
+ u32 emac_reg;
+ u32 sta_reg;
+
+ emac_reg = miiphy_getemac_offset();
+
+ /* wait for completion */
+ if (emac_miiphy_wait(emac_reg) != 0)
+ return -1;
+ sta_reg = reg; /* reg address */
+
+ /* set clock (50Mhz) and read flags */
+#if defined(CONFIG_440GX) || defined(CONFIG_440SPE) || \
+ defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
+ defined(CONFIG_460EX) || defined(CONFIG_460GT) || \
+ defined(CONFIG_405EX)
+#if defined(CONFIG_IBM_EMAC4_V4) /* EMAC4 V4 changed bit setting */
+ sta_reg = (sta_reg & ~EMAC_STACR_OP_MASK) | cmd;
+#else
+ sta_reg |= cmd;
+#endif
+#else
+ sta_reg = (sta_reg | cmd) & ~EMAC_STACR_CLK_100MHZ;
+#endif
+
+ /* Some boards (mainly 405EP based) define the PHY clock freqency fixed */
+ sta_reg = sta_reg | CONFIG_PHY_CLK_FREQ;
+ sta_reg = sta_reg | ((u32)addr << 5); /* Phy address */
+ sta_reg = sta_reg | EMAC_STACR_OC_MASK; /* new IBM emac v4 */
+ if (cmd == EMAC_STACR_WRITE)
+ memcpy(&sta_reg, &value, 2); /* put in data */
+
+ out_be32((void *)EMAC_STACR + emac_reg, sta_reg);
+ debug("%s [%d]: sta_reg=%08x\n", __func__, __LINE__, sta_reg);
+
+ /* wait for completion */
+ if (emac_miiphy_wait(emac_reg) != 0)
+ return -1;
+
+ debug("%s [%d]: sta_reg=%08x\n", __func__, __LINE__, sta_reg);
if ((sta_reg & EMAC_STACR_PHYE) != 0)
return -1;
+
+ return 0;
+}
+
+int emac4xx_miiphy_read (char *devname, unsigned char addr, unsigned char reg,
+ unsigned short *value)
+{
+ unsigned long sta_reg;
+ unsigned long emac_reg;
+
+ emac_reg = miiphy_getemac_offset ();
+
+ if (emac_miiphy_command(addr, reg, EMAC_STACR_READ, 0) != 0)
+ return -1;
+
+ sta_reg = in_be32((void *)EMAC_STACR + emac_reg);
+ *value = *(u16 *)(&sta_reg);
+
return 0;
+}
-} /* phy_read */
+/***********************************************************/
+/* write a phy reg and return the value with a rc */
+/***********************************************************/
-#endif /* CONFIG_405GP */
+int emac4xx_miiphy_write (char *devname, unsigned char addr, unsigned char reg,
+ unsigned short value)
+{
+ return emac_miiphy_command(addr, reg, EMAC_STACR_WRITE, value);
+}
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