Merged 405gp_enet.c and 440gx_enet.c to generic 4xx_enet.c

now handling all 4xx cpu's.
Patch by Stefan Roese, 16 Aug 2005

1 files changed, 131 insertions, 78 deletions

diff --git a/cpu/ppc4xx/miiphy.c b/cpu/ppc4xx/miiphy.c
index cb9dccd..24f9154 100644
--- a/cpu/ppc4xx/miiphy.c
+++ b/cpu/ppc4xx/miiphy.c
@@ -1,42 +1,44 @@
 /*-----------------------------------------------------------------------------+
   |
-  |       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
+  |  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
+  |  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@sandburst.com>
   |
   +-----------------------------------------------------------------------------*/
 
@@ -44,15 +46,13 @@
 #include <asm/processor.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_405EP) || \
-  (defined(CONFIG_440) && !defined(CONFIG_NET_MULTI))
 
 /***********************************************************/
-/* Dump out to the screen PHY regs                         */
+/* Dump out to the screen PHY regs			   */
 /***********************************************************/
 
 void miiphy_dump (unsigned char addr)
@@ -72,75 +72,127 @@ void miiphy_dump (unsigned char addr)
 		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           */
-/* Note: We are referencing to EMAC_STACR register         */
-/* @(EMAC_BASE + 92) because  of:                          */
-/* - 405EP has only STACR for EMAC0 pinned out             */
-/* - 405GP has onle one EMAC0                              */
-/* - For 440 this module gets compiled only for            */
-/*   !CONFIG_NET_MULTI, i.e. only EMAC0 is supported.      */
+/* (Re)start autonegotiation				   */
 /***********************************************************/
+int phy_setup_aneg (unsigned char addr)
+{
+	unsigned short ctl, adv;
+
+	/* Setup standard advertise */
+	miiphy_read (addr, PHY_ANAR, &adv);
+	adv |= (PHY_ANLPAR_ACK | PHY_ANLPAR_RF | PHY_ANLPAR_T4 |
+		PHY_ANLPAR_TXFD | PHY_ANLPAR_TX | PHY_ANLPAR_10FD |
+		PHY_ANLPAR_10);
+	miiphy_write (addr, PHY_ANAR, adv);
 
-int miiphy_read (unsigned char addr, unsigned char reg,
-				 unsigned short *value)
+	/* Start/Restart aneg */
+	miiphy_read (addr, PHY_BMCR, &ctl);
+	ctl |= (PHY_BMCR_AUTON | PHY_BMCR_RST_NEG);
+	miiphy_write (addr, PHY_BMCR, ctl);
+
+	return 0;
+}
+
+
+/***********************************************************/
+/* read a phy reg and return the value with a rc	   */
+/***********************************************************/
+unsigned int miiphy_getemac_offset (void)
 {
-	unsigned long sta_reg;		/* STA scratch area */
+#if defined(CONFIG_440) && defined(CONFIG_NET_MULTI)
+	unsigned long zmii;
+	unsigned long eoffset;
+
+	/* Need to find out which mdi port we're using */
+	zmii = in32 (ZMII_FER);
+
+	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);
+		out32 (ZMII_FER, zmii);
+		eoffset = 0;
+		/* need to soft reset port 0 */
+		zmii = in32 (EMAC_M0);
+		zmii |= EMAC_M0_SRST;
+		out32 (EMAC_M0, zmii);
+	}
+
+	return (eoffset);
+#else
+	return 0;
+#endif
+}
+
+
+int miiphy_read (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 ((in32 (EMAC_STACR) & EMAC_STACR_OC) == 0) {
+	while ((in32 (EMAC_STACR + emac_reg) & EMAC_STACR_OC) == 0) {
 		udelay (7);
 		if (i > 5) {
-#if 0	/* test-only */
+#if 0
 			printf ("read err 1\n");
 #endif
 			return -1;
 		}
 		i++;
 	}
-	sta_reg = reg;				/* reg address */
+	sta_reg = reg;		/* reg address */
 	/* set clock (50Mhz) and read flags */
+#if defined(CONFIG_440GX)
+	sta_reg |= EMAC_STACR_READ;
+#else
 	sta_reg = (sta_reg | EMAC_STACR_READ) & ~EMAC_STACR_CLK_100MHZ;
-#ifdef CONFIG_PHY_CLK_FREQ
+#endif
+
+#if defined(CONFIG_PHY_CLK_FREQ) && !defined(CONFIG_440GX)
 	sta_reg = sta_reg | CONFIG_PHY_CLK_FREQ;
 #endif
 	sta_reg = sta_reg | (addr << 5);	/* Phy address */
 
-	out32 (EMAC_STACR, sta_reg);
-#if 0	/* test-only */
+	out32 (EMAC_STACR + emac_reg, sta_reg);
+#if 0				/* test-only */
 	printf ("a2: write: EMAC_STACR=0x%0x\n", sta_reg);	/* test-only */
 #endif
 
-#ifdef CONFIG_PHY_CMD_DELAY
-	udelay (CONFIG_PHY_CMD_DELAY);		/* Intel LXT971A needs this */
-#endif
-	sta_reg = in32 (EMAC_STACR);
+	sta_reg = in32 (EMAC_STACR + emac_reg);
 	i = 0;
 	while ((sta_reg & EMAC_STACR_OC) == 0) {
 		udelay (7);
 		if (i > 5) {
-#if 0	/* test-only */
-			printf ("read err 2\n");
-#endif
 			return -1;
 		}
 		i++;
-		sta_reg = in32 (EMAC_STACR);
+		sta_reg = in32 (EMAC_STACR + emac_reg);
 	}
 	if ((sta_reg & EMAC_STACR_PHYE) != 0) {
-#if 0	/* test-only */
-		printf ("read err 3\n");
-		printf ("a2: read: EMAC_STACR=0x%0lx, i=%d\n",
-			sta_reg, (int) i);	/* test-only */
-#endif
 		return -1;
 	}
 
@@ -148,58 +200,59 @@ int miiphy_read (unsigned char addr, unsigned char reg,
 	return 0;
 
 
-} /* phy_read */
+}				/* phy_read */
 
 
 /***********************************************************/
-/* write a phy reg and return the value with a rc           */
+/* write a phy reg and return the value with a rc	    */
 /***********************************************************/
 
-int miiphy_write (unsigned char addr, unsigned char reg,
-		  unsigned short value)
+int miiphy_write (unsigned char addr, unsigned char reg, unsigned short value)
 {
-	unsigned long sta_reg;		/* STA scratch area */
+	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;
 
-	while ((in32 (EMAC_STACR) & EMAC_STACR_OC) == 0) {
+	while ((in32 (EMAC_STACR + emac_reg) & EMAC_STACR_OC) == 0) {
 		if (i > 5)
 			return -1;
 		udelay (7);
 		i++;
 	}
 	sta_reg = 0;
-	sta_reg = reg;				/* reg address */
+	sta_reg = reg;		/* reg address */
 	/* set clock (50Mhz) and read flags */
+#if defined(CONFIG_440GX)
+	sta_reg |= EMAC_STACR_WRITE;
+#else
 	sta_reg = (sta_reg | EMAC_STACR_WRITE) & ~EMAC_STACR_CLK_100MHZ;
-#ifdef CONFIG_PHY_CLK_FREQ
-	sta_reg = sta_reg | CONFIG_PHY_CLK_FREQ; /* Set clock frequency (PLB freq. dependend) */
+#endif
+
+#if defined(CONFIG_PHY_CLK_FREQ) && !defined(CONFIG_440GX)
+	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 */
 	memcpy (&sta_reg, &value, 2);	/* put in data */
 
-	out32 (EMAC_STACR, sta_reg);
+	out32 (EMAC_STACR + emac_reg, sta_reg);
 
-#ifdef CONFIG_PHY_CMD_DELAY
-	udelay (CONFIG_PHY_CMD_DELAY);		/* Intel LXT971A needs this */
-#endif
 	/* wait for completion */
 	i = 0;
-	sta_reg = in32 (EMAC_STACR);
+	sta_reg = in32 (EMAC_STACR + emac_reg);
 	while ((sta_reg & EMAC_STACR_OC) == 0) {
 		udelay (7);
 		if (i > 5)
 			return -1;
 		i++;
-		sta_reg = in32 (EMAC_STACR);
+		sta_reg = in32 (EMAC_STACR + emac_reg);
 	}
 
 	if ((sta_reg & EMAC_STACR_PHYE) != 0)
 		return -1;
 	return 0;
 
-} /* phy_read */
-
-#endif	/* CONFIG_405GP */
+}				/* phy_write */