mv88e61xx: refactor PHY and SWITCH level-code

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>

2 files changed, 342 insertions, 192 deletions

diff --git a/drivers/net/phy/mv88e61xx.c b/drivers/net/phy/mv88e61xx.c
index 483a920..e8da66d 100644
--- a/drivers/net/phy/mv88e61xx.c
+++ b/drivers/net/phy/mv88e61xx.c
@@ -26,6 +26,14 @@
 #include <netdev.h>
 #include "mv88e61xx.h"
 
+/*
+ * Uncomment either of the following line for local debug control;
+ * otherwise global debug control will apply.
+ */
+
+/* #undef DEBUG */
+/* #define DEBUG */
+
 #ifdef CONFIG_MV88E61XX_MULTICHIP_ADRMODE
 /* Chip Address mode
  * The Switch support two modes of operation
@@ -52,7 +60,8 @@ static int mv88e61xx_busychk_multic(char *name, u32 devaddr)
 	return 0;
 }
 
-static void mv88e61xx_wr_phy(char *name, u32 phy_adr, u32 reg_ofs, u16 data)
+static void mv88e61xx_switch_write(char *name, u32 phy_adr,
+	u32 reg_ofs, u16 data)
 {
 	u16 mii_dev_addr;
 
@@ -70,7 +79,8 @@ static void mv88e61xx_wr_phy(char *name, u32 phy_adr, u32 reg_ofs, u16 data)
 									 15));
 }
 
-static void mv88e61xx_rd_phy(char *name, u32 phy_adr, u32 reg_ofs, u16 * data)
+static void mv88e61xx_switch_read(char *name, u32 phy_adr,
+	u32 reg_ofs, u16 *data)
 {
 	u16 mii_dev_addr;
 
@@ -90,110 +100,51 @@ static void mv88e61xx_rd_phy(char *name, u32 phy_adr, u32 reg_ofs, u16 * data)
 }
 #endif /* CONFIG_MV88E61XX_MULTICHIP_ADRMODE */
 
-static void mv88e61xx_port_vlan_config(struct mv88e61xx_config *swconfig,
-				       u32 max_prtnum, u32 ports_ofs)
-{
-	u32 prt;
-	u16 reg;
-	char *name = swconfig->name;
-	u32 cpu_port = swconfig->cpuport;
-	u32 port_mask = swconfig->ports_enabled;
-	enum mv88e61xx_cfg_vlan vlancfg = swconfig->vlancfg;
-
-	/* be sure all ports are disabled */
-	for (prt = 0; prt < max_prtnum; prt++) {
-		RD_PHY(name, ports_ofs + prt, MV88E61XX_PRT_CTRL_REG, &reg);
-		reg &= ~0x3;
-		WR_PHY(name, ports_ofs + prt, MV88E61XX_PRT_CTRL_REG, reg);
-
-		if (!(cpu_port & (1 << prt)))
-			continue;
-		/* Set CPU port VID to 0x1 */
-		RD_PHY(name, (ports_ofs + prt), MV88E61XX_PRT_VID_REG, &reg);
-		reg &= ~0xfff;
-		reg |= 0x1;
-		WR_PHY(name, (ports_ofs + prt), MV88E61XX_PRT_VID_REG, reg);
-	}
-
-	/* Setting  Port default priority for all ports to zero */
-	for (prt = 0; prt < max_prtnum; prt++) {
-		RD_PHY(name, ports_ofs + prt, MV88E61XX_PRT_VID_REG, &reg);
-		reg &= ~0xc000;
-		WR_PHY(name, ports_ofs + prt, MV88E61XX_PRT_VID_REG, reg);
-	}
-	/* Setting VID and VID map for all ports except CPU port */
-	for (prt = 0; prt < max_prtnum; prt++) {
-		/* only for enabled ports */
-		if ((1 << prt) & port_mask) {
-			/* skip CPU port */
-			if ((1 << prt) & cpu_port) {
-				/*
-				 * Set Vlan map table for cpu_port to see
-				 * all ports
-				 */
-				RD_PHY(name, (ports_ofs + prt),
-				       MV88E61XX_PRT_VMAP_REG, &reg);
-				reg &= ~((1 << max_prtnum) - 1);
-				reg |= port_mask & ~(1 << prt);
-				WR_PHY(name, (ports_ofs + prt),
-				       MV88E61XX_PRT_VMAP_REG, reg);
-			} else {
-
-				/*
-				 *  set Ports VLAN Mapping.
-				 *      port prt <--> cpu_port VLAN #prt+1.
-				 */
-				RD_PHY(name, ports_ofs + prt,
-				       MV88E61XX_PRT_VID_REG, &reg);
-				reg &= ~0x0fff;
-				reg |= (prt + 1);
-				WR_PHY(name, ports_ofs + prt,
-				       MV88E61XX_PRT_VID_REG, reg);
-
-				RD_PHY(name, ports_ofs + prt,
-				       MV88E61XX_PRT_VMAP_REG, &reg);
-				if (vlancfg == MV88E61XX_VLANCFG_DEFAULT) {
-					/*
-					 * all any port can send frames to all other ports
-					 * ref: sec 3.2.1.1 of datasheet
-					 */
-					reg |= 0x03f;
-					reg &= ~(1 << prt);
-				} else if (vlancfg == MV88E61XX_VLANCFG_ROUTER) {
-					/*
-					 * all other ports can send frames to CPU port only
-					 * ref: sec 3.2.1.2 of datasheet
-					 */
-					reg &= ~((1 << max_prtnum) - 1);
-					reg |= cpu_port;
-				}
-				WR_PHY(name, ports_ofs + prt,
-				       MV88E61XX_PRT_VMAP_REG, reg);
-			}
-		}
-	}
+/*
+ * Convenience macros for switch device/port reads/writes
+ * These macros output valid 'mv88e61xx' U_BOOT_CMDs
+ */
 
-	/*
-	 * enable only appropriate ports to forwarding mode
-	 * and disable the others
-	 */
-	for (prt = 0; prt < max_prtnum; prt++) {
-		if ((1 << prt) & port_mask) {
-			RD_PHY(name, ports_ofs + prt,
-			       MV88E61XX_PRT_CTRL_REG, &reg);
-			reg |= 0x3;
-			WR_PHY(name, ports_ofs + prt,
-			       MV88E61XX_PRT_CTRL_REG, reg);
-		} else {
-			/* Disable port */
-			RD_PHY(name, ports_ofs + prt,
-			       MV88E61XX_PRT_CTRL_REG, &reg);
-			reg &= ~0x3;
-			WR_PHY(name, ports_ofs + prt,
-			       MV88E61XX_PRT_CTRL_REG, reg);
-		}
-	}
+#ifndef DEBUG
+#define WR_SWITCH_REG wr_switch_reg
+#define RD_SWITCH_REG rd_switch_reg
+#define WR_SWITCH_PORT_REG(n, p, r, d) \
+	WR_SWITCH_REG(n, (MV88E61XX_PRT_OFST+p), r, d)
+#define RD_SWITCH_PORT_REG(n, p, r, d) \
+	RD_SWITCH_REG(n, (MV88E61XX_PRT_OFST+p), r, d)
+#else
+static void WR_SWITCH_REG(char *name, u32 dev_adr, u32 reg_ofs, u16 data)
+{
+	printf("mv88e61xx %s dev %02x reg %02x write %04x\n",
+		name, dev_adr, reg_ofs, data);
+	wr_switch_reg(name, dev_adr, reg_ofs, data);
 }
+static void RD_SWITCH_REG(char *name, u32 dev_adr, u32 reg_ofs, u16 *data)
+{
+	rd_switch_reg(name, dev_adr, reg_ofs, data);
+	printf("mv88e61xx %s dev %02x reg %02x read %04x\n",
+		name, dev_adr, reg_ofs, *data);
+}
+static void WR_SWITCH_PORT_REG(char *name, u32 prt_adr, u32 reg_ofs,
+	u16 data)
+{
+	printf("mv88e61xx %s port %02x reg %02x write %04x\n",
+		name, prt_adr, reg_ofs, data);
+	wr_switch_reg(name, (MV88E61XX_PRT_OFST+prt_adr), reg_ofs, data);
+}
+static void RD_SWITCH_PORT_REG(char *name, u32 prt_adr, u32 reg_ofs,
+	u16 *data)
+{
+	rd_switch_reg(name, (MV88E61XX_PRT_OFST+prt_adr), reg_ofs, data);
+	printf("mv88e61xx %s port %02x reg %02x read %04x\n",
+		name, prt_adr, reg_ofs, *data);
+}
+#endif
+
+/*
+ * Local functions to read/write registers on the switch PHYs.
+ * NOTE! This goes through switch, not direct miiphy, writes and reads!
+ */
 
 /*
  * Make sure SMIBusy bit cleared before another
@@ -204,7 +155,7 @@ static int mv88e61xx_busychk(char *name)
 	u16 reg = 0;
 	u32 timeout = MV88E61XX_PHY_TIMEOUT;
 	do {
-		RD_PHY(name, MV88E61XX_GLB2REG_DEVADR,
+		rd_switch_reg(name, MV88E61XX_GLB2REG_DEVADR,
 		       MV88E61XX_PHY_CMD, &reg);
 		if (timeout-- == 0) {
 			printf("SMI busy timeout\n");
@@ -214,34 +165,110 @@ static int mv88e61xx_busychk(char *name)
 	return 0;
 }
 
+static inline int mv88e61xx_switch_miiphy_write(char *name, u32 phy,
+	u32 reg, u16 data)
+{
+	/* write switch data reg then cmd reg then check completion */
+	wr_switch_reg(name, MV88E61XX_GLB2REG_DEVADR, MV88E61XX_PHY_DATA,
+		data);
+	wr_switch_reg(name, MV88E61XX_GLB2REG_DEVADR, MV88E61XX_PHY_CMD,
+		(MV88E61XX_PHY_WRITE_CMD | (phy << 5)  | reg));
+	return mv88e61xx_busychk(name);
+}
+
+static inline int mv88e61xx_switch_miiphy_read(char *name, u32 phy,
+	u32 reg, u16 *data)
+{
+	/* write switch cmd reg, check for completion */
+	wr_switch_reg(name, MV88E61XX_GLB2REG_DEVADR, MV88E61XX_PHY_CMD,
+		(MV88E61XX_PHY_READ_CMD | (phy << 5)  | reg));
+	if (mv88e61xx_busychk(name))
+		return -1;
+	/* read switch data reg and return success */
+	rd_switch_reg(name, MV88E61XX_GLB2REG_DEVADR, MV88E61XX_PHY_DATA, data);
+	return 0;
+}
+
+/*
+ * Convenience macros for switch PHY reads/writes
+ */
+
+#ifndef DEBUG
+#define WR_SWITCH_PHY_REG mv88e61xx_switch_miiphy_write
+#define RD_SWITCH_PHY_REG mv88e61xx_switch_miiphy_read
+#else
+static inline int WR_SWITCH_PHY_REG(char *name, u32 phy_adr,
+	u32 reg_ofs, u16 data)
+{
+	int r = mv88e61xx_switch_miiphy_write(name, phy_adr, reg_ofs, data);
+	if (r)
+		printf("** ERROR writing mv88e61xx %s phy %02x reg %02x\n",
+			name, phy_adr, reg_ofs);
+	else
+		printf("mv88e61xx %s phy %02x reg %02x write %04x\n",
+			name, phy_adr, reg_ofs, data);
+	return r;
+}
+static inline int RD_SWITCH_PHY_REG(char *name, u32 phy_adr,
+	u32 reg_ofs, u16 *data)
+{
+	int r = mv88e61xx_switch_miiphy_read(name, phy_adr, reg_ofs, data);
+	if (r)
+		printf("** ERROR reading mv88e61xx %s phy %02x reg %02x\n",
+			name, phy_adr, reg_ofs);
+	else
+		printf("mv88e61xx %s phy %02x reg %02x read %04x\n",
+			name, phy_adr, reg_ofs, *data);
+	return r;
+}
+#endif
+
+static void mv88e61xx_port_vlan_config(struct mv88e61xx_config *swconfig)
+{
+	u32 prt;
+	u16 reg;
+	char *name = swconfig->name;
+	u32 port_mask = swconfig->ports_enabled;
+
+	/* apply internal vlan config */
+	for (prt = 0; prt < MV88E61XX_MAX_PORTS_NUM; prt++) {
+		/* only for enabled ports */
+		if ((1 << prt) & port_mask) {
+			/* take vlan map from swconfig */
+			u8 vlanmap = swconfig->vlancfg[prt];
+			/* remove disabled ports from vlan map */
+			vlanmap &= swconfig->ports_enabled;
+			/* apply vlan map to port */
+			RD_SWITCH_PORT_REG(name, prt,
+				MV88E61XX_PRT_VMAP_REG, &reg);
+			reg &= ~((1 << MV88E61XX_MAX_PORTS_NUM) - 1);
+			reg |= vlanmap;
+			WR_SWITCH_PORT_REG(name, prt,
+				MV88E61XX_PRT_VMAP_REG, reg);
+		}
+	}
+}
+
 /*
  * Power up the specified port and reset PHY
  */
-static int mv88361xx_powerup(struct mv88e61xx_config *swconfig, u32 prt)
+static int mv88361xx_powerup(struct mv88e61xx_config *swconfig, u32 phy)
 {
 	char *name = swconfig->name;
 
-	/* Write Copper Specific control reg1 (0x14) for-
+	/* Write Copper Specific control reg1 (0x10) for-
 	 * Enable Phy power up
 	 * Energy Detect on (sense&Xmit NLP Periodically
 	 * reset other settings default
 	 */
-	WR_PHY(name, MV88E61XX_GLB2REG_DEVADR, MV88E61XX_PHY_DATA, 0x3360);
-	WR_PHY(name, MV88E61XX_GLB2REG_DEVADR,
-	       MV88E61XX_PHY_CMD, (0x9410 | (prt << 5)));
-
-	if (mv88e61xx_busychk(name))
+	if (WR_SWITCH_PHY_REG(name, phy, 0x10, 0x3360))
 		return -1;
 
 	/* Write PHY ctrl reg (0x0) to apply
 	 * Phy reset (set bit 15 low)
 	 * reset other default values
 	 */
-	WR_PHY(name, MV88E61XX_GLB2REG_DEVADR, MV88E61XX_PHY_DATA, 0x1140);
-	WR_PHY(name, MV88E61XX_GLB2REG_DEVADR,
-	       MV88E61XX_PHY_CMD, (0x9400 | (prt << 5)));
-
-	if (mv88e61xx_busychk(name))
+	if (WR_SWITCH_PHY_REG(name, phy, 0x00, 0x9140))
 		return -1;
 
 	return 0;
@@ -256,48 +283,26 @@ static int mv88361xx_powerup(struct mv88e61xx_config *swconfig, u32 prt)
  * to setup PHY LEDs default configuration to detect 10/100/1000Mb/s
  * Link status
  */
-static int mv88361xx_led_init(struct mv88e61xx_config *swconfig, u32 prt)
+static int mv88361xx_led_init(struct mv88e61xx_config *swconfig, u32 phy)
 {
 	char *name = swconfig->name;
-	u16 reg;
 
 	if (swconfig->led_init != MV88E61XX_LED_INIT_EN)
 		return 0;
 
 	/* set page address to 3 */
-	reg = 3;
-	WR_PHY(name, MV88E61XX_GLB2REG_DEVADR, MV88E61XX_PHY_DATA, reg);
-	WR_PHY(name, MV88E61XX_GLB2REG_DEVADR,
-	       MV88E61XX_PHY_CMD, (1 << MV88E61XX_BUSY_OFST |
-				   1 << MV88E61XX_MODE_OFST |
-				   1 << MV88E61XX_OP_OFST |
-				   prt << MV88E61XX_ADDR_OFST | 22));
-
-	if (mv88e61xx_busychk(name))
+	if (WR_SWITCH_PHY_REG(name, phy, 0x16, 0x0003))
 		return -1;
 
-	/* set LED Func Ctrl reg */
-	reg = 1;	/* LED[0] On-Link, Blink-Activity, Off-NoLink */
-	WR_PHY(name, MV88E61XX_GLB2REG_DEVADR, MV88E61XX_PHY_DATA, reg);
-	WR_PHY(name, MV88E61XX_GLB2REG_DEVADR,
-	       MV88E61XX_PHY_CMD, (1 << MV88E61XX_BUSY_OFST |
-				   1 << MV88E61XX_MODE_OFST |
-				   1 << MV88E61XX_OP_OFST |
-				   prt << MV88E61XX_ADDR_OFST | 16));
-
-	if (mv88e61xx_busychk(name))
+	/*
+	 * set LED Func Ctrl reg
+	 * value 0x0001 = LED[0] On-Link, Blink-Activity, Off-NoLink
+	 */
+	if (WR_SWITCH_PHY_REG(name, phy, 0x10, 0x0001))
 		return -1;
 
 	/* set page address to 0 */
-	reg = 0;
-	WR_PHY(name, MV88E61XX_GLB2REG_DEVADR, MV88E61XX_PHY_DATA, reg);
-	WR_PHY(name, MV88E61XX_GLB2REG_DEVADR,
-	       MV88E61XX_PHY_CMD, (1 << MV88E61XX_BUSY_OFST |
-				   1 << MV88E61XX_MODE_OFST |
-				   1 << MV88E61XX_OP_OFST |
-				   prt << MV88E61XX_ADDR_OFST | 22));
-
-	if (mv88e61xx_busychk(name))
+	if (WR_SWITCH_PHY_REG(name, phy, 0x16, 0x0000))
 		return -1;
 
 	return 0;
@@ -312,23 +317,15 @@ static int mv88361xx_led_init(struct mv88e61xx_config *swconfig, u32 prt)
  * This is optional settings may be needed on some boards
  * for PHY<->magnetics h/w tuning
  */
-static int mv88361xx_reverse_mdipn(struct mv88e61xx_config *swconfig, u32 prt)
+static int mv88361xx_reverse_mdipn(struct mv88e61xx_config *swconfig, u32 phy)
 {
 	char *name = swconfig->name;
-	u16 reg;
 
 	if (swconfig->mdip != MV88E61XX_MDIP_REVERSE)
 		return 0;
 
-	reg = 0x0f;		/*Reverse MDIP/N[3:0] bits */
-	WR_PHY(name, MV88E61XX_GLB2REG_DEVADR, MV88E61XX_PHY_DATA, reg);
-	WR_PHY(name, MV88E61XX_GLB2REG_DEVADR,
-	       MV88E61XX_PHY_CMD, (1 << MV88E61XX_BUSY_OFST |
-				   1 << MV88E61XX_MODE_OFST |
-				   1 << MV88E61XX_OP_OFST |
-				   prt << MV88E61XX_ADDR_OFST | 20));
-
-	if (mv88e61xx_busychk(name))
+	/*Reverse MDIP/N[3:0] bits */
+	if (WR_SWITCH_PHY_REG(name, phy, 0x14, 0x000f))
 		return -1;
 
 	return 0;
@@ -343,6 +340,7 @@ int mv88e61xx_switch_initialize(struct mv88e61xx_config *swconfig)
 	u16 reg;
 	char *idstr;
 	char *name = swconfig->name;
+	int time;
 
 	if (miiphy_set_current_dev(name)) {
 		printf("%s failed\n", __FUNCTION__);
@@ -354,7 +352,7 @@ int mv88e61xx_switch_initialize(struct mv88e61xx_config *swconfig)
 		printf("Invalid cpu port config, using default port5\n");
 	}
 
-	RD_PHY(name, MV88E61XX_PRT_OFST, MII_PHYSID2, &reg);
+	RD_SWITCH_PORT_REG(name, 0, MII_PHYSID2, &reg);
 	switch (reg &= 0xfff0) {
 	case 0x1610:
 		idstr = "88E6161";
@@ -373,46 +371,183 @@ int mv88e61xx_switch_initialize(struct mv88e61xx_config *swconfig)
 		break;
 	}
 
-	/* Port based VLANs configuration */
-	if ((swconfig->vlancfg == MV88E61XX_VLANCFG_DEFAULT)
-	    || (swconfig->vlancfg == MV88E61XX_VLANCFG_ROUTER))
-		mv88e61xx_port_vlan_config(swconfig, MV88E61XX_MAX_PORTS_NUM,
-					   MV88E61XX_PRT_OFST);
-	else {
-		printf("Unsupported mode %s failed\n", __FUNCTION__);
-		return -1;
+	/* be sure all ports are disabled */
+	for (prt = 0; prt < MV88E61XX_MAX_PORTS_NUM; prt++) {
+		RD_SWITCH_PORT_REG(name, prt, MV88E61XX_PRT_CTRL_REG, &reg);
+		reg &= ~0x3;
+		WR_SWITCH_PORT_REG(name, prt, MV88E61XX_PRT_CTRL_REG, reg);
 	}
 
+	/* wait 2 ms for queues to drain */
+	udelay(2000);
+
+	/* reset switch */
+	RD_SWITCH_REG(name, MV88E61XX_GLBREG_DEVADR, MV88E61XX_SGCR, &reg);
+	reg |= 0x8000;
+	WR_SWITCH_REG(name, MV88E61XX_GLBREG_DEVADR, MV88E61XX_SGCR, reg);
+
+	/* wait up to 1 second for switch reset complete */
+	for (time = 1000; time; time--) {
+		RD_SWITCH_REG(name, MV88E61XX_GLBREG_DEVADR, MV88E61XX_SGSR,
+			&reg);
+		if ((reg & 0xc800) == 0xc800)
+			break;
+		udelay(1000);
+	}
+	if (!time)
+		return -1;
+
+	/* Port based VLANs configuration */
+	mv88e61xx_port_vlan_config(swconfig);
+
 	if (swconfig->rgmii_delay == MV88E61XX_RGMII_DELAY_EN) {
 		/*
 		 * Enable RGMII delay on Tx and Rx for CPU port
 		 * Ref: sec 9.5 of chip datasheet-02
 		 */
-		WR_PHY(name, MV88E61XX_PRT_OFST + 5,
-		       MV88E61XX_RGMII_TIMECTRL_REG, 0x18);
-		WR_PHY(name, MV88E61XX_PRT_OFST + 4,
-		       MV88E61XX_RGMII_TIMECTRL_REG, 0xc1e7);
+		/*Force port link down */
+		WR_SWITCH_PORT_REG(name, 5, MV88E61XX_PCS_CTRL_REG, 0x10);
+		/* configure port RGMII delay */
+		WR_SWITCH_PORT_REG(name, 4,
+			MV88E61XX_RGMII_TIMECTRL_REG, 0x81e7);
+		RD_SWITCH_PORT_REG(name, 5,
+			MV88E61XX_RGMII_TIMECTRL_REG, &reg);
+		WR_SWITCH_PORT_REG(name, 5,
+			MV88E61XX_RGMII_TIMECTRL_REG, reg | 0x18);
+		WR_SWITCH_PORT_REG(name, 4,
+			MV88E61XX_RGMII_TIMECTRL_REG, 0xc1e7);
+		/* Force port to RGMII FDX 1000Base then up */
+		WR_SWITCH_PORT_REG(name, 5, MV88E61XX_PCS_CTRL_REG, 0x1e);
+		WR_SWITCH_PORT_REG(name, 5, MV88E61XX_PCS_CTRL_REG, 0x3e);
 	}
 
 	for (prt = 0; prt < MV88E61XX_MAX_PORTS_NUM; prt++) {
-		if (!((1 << prt) & swconfig->cpuport)) {
 
-			if (mv88361xx_led_init(swconfig, prt))
+		/* configure port's PHY */
+		if (!((1 << prt) & swconfig->cpuport)) {
+			/* port 4 has phy 6, not 4 */
+			int phy = (prt == 4) ? 6 : prt;
+			if (mv88361xx_powerup(swconfig, phy))
 				return -1;
-			if (mv88361xx_reverse_mdipn(swconfig, prt))
+			if (mv88361xx_reverse_mdipn(swconfig, phy))
 				return -1;
-			if (mv88361xx_powerup(swconfig, prt))
+			if (mv88361xx_led_init(swconfig, phy))
 				return -1;
 		}
 
+		/* set port VID to port+1 except for cpu port */
+		if (!((1 << prt) & swconfig->cpuport)) {
+			RD_SWITCH_PORT_REG(name, prt,
+				MV88E61XX_PRT_VID_REG, &reg);
+			WR_SWITCH_PORT_REG(name, prt,
+				MV88E61XX_PRT_VID_REG,
+				(reg & ~1023) | (prt+1));
+		}
+
 		/*Program port state */
-		RD_PHY(name, MV88E61XX_PRT_OFST + prt,
-		       MV88E61XX_PRT_CTRL_REG, &reg);
-		WR_PHY(name, MV88E61XX_PRT_OFST + prt,
-		       MV88E61XX_PRT_CTRL_REG,
-		       reg | (swconfig->portstate & 0x03));
+		RD_SWITCH_PORT_REG(name, prt,
+			MV88E61XX_PRT_CTRL_REG, &reg);
+		WR_SWITCH_PORT_REG(name, prt,
+			MV88E61XX_PRT_CTRL_REG,
+			reg | (swconfig->portstate & 0x03));
+
 	}
 
 	printf("%s Initialized on %s\n", idstr, name);
 	return 0;
 }
+
+#ifdef CONFIG_MV88E61XX_CMD
+static int
+do_switch(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	char *name, *endp;
+	int write = 0;
+	enum { dev, prt, phy } target = dev;
+	u32 addrlo, addrhi, addr;
+	u32 reglo, reghi, reg;
+	u16 data, rdata;
+
+	if (argc < 7)
+		return -1;
+
+	name = argv[1];
+
+	if (strcmp(argv[2], "phy") == 0)
+		target = phy;
+	else if (strcmp(argv[2], "port") == 0)
+		target = prt;
+	else if (strcmp(argv[2], "dev") != 0)
+		return 1;
+
+	addrlo = simple_strtoul(argv[3], &endp, 16);
+
+	if (!*endp) {
+		addrhi = addrlo;
+	} else {
+		while (*endp < '0' || *endp > '9')
+			endp++;
+		addrhi = simple_strtoul(endp, NULL, 16);
+	}
+
+	reglo = simple_strtoul(argv[5], &endp, 16);
+	if (!*endp) {
+		reghi = reglo;
+	} else {
+		while (*endp < '0' || *endp > '9')
+			endp++;
+		reghi = simple_strtoul(endp, NULL, 16);
+	}
+
+	if (strcmp(argv[6], "write") == 0)
+		write = 1;
+	else if (strcmp(argv[6], "read") != 0)
+		return 1;
+
+	data = simple_strtoul(argv[7], NULL, 16);
+
+	for (addr = addrlo; addr <= addrhi; addr++) {
+		for (reg = reglo; reg <= reghi; reg++) {
+			if (write) {
+				if (target == phy)
+					mv88e61xx_switch_miiphy_write(
+						name, addr, reg, data);
+				else if (target == prt)
+					wr_switch_reg(name,
+						addr+MV88E61XX_PRT_OFST,
+						reg, data);
+				else
+					wr_switch_reg(name, addr, reg, data);
+			} else {
+				if (target == phy)
+					mv88e61xx_switch_miiphy_read(
+						name, addr, reg, &rdata);
+				else if (target == prt)
+					rd_switch_reg(name,
+						addr+MV88E61XX_PRT_OFST,
+						reg, &rdata);
+				else
+					rd_switch_reg(name, addr, reg, &rdata);
+				printf("%s %s %s %02x %s %02x %s %04x\n",
+					argv[0], argv[1], argv[2], addr,
+					argv[4], reg, argv[6], rdata);
+				if (write && argc == 7 && rdata != data)
+					return 1;
+			}
+		}
+	}
+	return 0;
+}
+
+U_BOOT_CMD(mv88e61xx, 8, 0, do_switch,
+	"Read or write mv88e61xx switch registers",
+	"<ethdevice> dev|port|phy <addr> reg <reg> write <data>\n"
+	"<ethdevice> dev|port|phy <addr> reg <reg> read [<data>]\n"
+	"    - read/write switch device, port or phy at (addr,reg)\n"
+	"      addr=0..0x1C for dev, 0..5 for port or phy.\n"
+	"      reg=0..0x1F.\n"
+	"      data=0..0xFFFF (tested if present against actual read).\n"
+	"      All numeric parameters are assumed to be hex.\n"
+	"      <addr> and <<reg> arguments can be ranges (x..y)"
+);
+#endif /* CONFIG_MV88E61XX_CMD */
diff --git a/drivers/net/phy/mv88e61xx.h b/drivers/net/phy/mv88e61xx.h
index 57762b6..55ded7e 100644
--- a/drivers/net/phy/mv88e61xx.h
+++ b/drivers/net/phy/mv88e61xx.h
@@ -28,35 +28,50 @@
 #include <miiphy.h>
 
 #define MV88E61XX_CPU_PORT		0x5
-#define MV88E61XX_MAX_PORTS_NUM		0x6
 
 #define MV88E61XX_PHY_TIMEOUT		100000
 
-#define MV88E61XX_PRT_STS_REG		0x1
+/* port dev-addr (= port + 0x10) */
+#define MV88E61XX_PRT_OFST		0x10
+/* port registers */
+#define MV88E61XX_PCS_CTRL_REG		0x1
 #define MV88E61XX_PRT_CTRL_REG		0x4
 #define MV88E61XX_PRT_VMAP_REG		0x6
 #define MV88E61XX_PRT_VID_REG		0x7
+#define MV88E61XX_RGMII_TIMECTRL_REG	0x1A
 
-#define MV88E61XX_PRT_OFST		0x10
+/* global registers dev-addr */
+#define MV88E61XX_GLBREG_DEVADR	0x1B
+/* global registers */
+#define MV88E61XX_SGSR			0x00
+#define MV88E61XX_SGCR			0x04
+
+/* global 2 registers dev-addr */
+#define MV88E61XX_GLB2REG_DEVADR	0x1C
+/* global 2 registers */
 #define MV88E61XX_PHY_CMD		0x18
 #define MV88E61XX_PHY_DATA		0x19
-#define MV88E61XX_RGMII_TIMECTRL_REG	0x1A
-#define MV88E61XX_GLB2REG_DEVADR	0x1C
+/* global 2 phy commands */
+#define MV88E61XX_PHY_WRITE_CMD		0x9400
+#define MV88E61XX_PHY_READ_CMD		0x9800
 
 #define MV88E61XX_BUSY_OFST		15
 #define MV88E61XX_MODE_OFST		12
-#define MV88E61XX_OP_OFST			10
+#define MV88E61XX_OP_OFST		10
 #define MV88E61XX_ADDR_OFST		5
 
 #ifdef CONFIG_MV88E61XX_MULTICHIP_ADRMODE
 static int mv88e61xx_busychk_multic(char *name, u32 devaddr);
-static void mv88e61xx_wr_phy(char *name, u32 phy_adr, u32 reg_ofs, u16 data);
-static void mv88e61xx_rd_phy(char *name, u32 phy_adr, u32 reg_ofs, u16 * data);
-#define WR_PHY mv88e61xx_wr_phy
-#define RD_PHY mv88e61xx_rd_phy
+static void mv88e61xx_switch_write(char *name, u32 phy_adr,
+	u32 reg_ofs, u16 data);
+static void mv88e61xx_switch_read(char *name, u32 phy_adr,
+	u32 reg_ofs, u16 *data);
+#define wr_switch_reg mv88e61xx_switch_write
+#define rd_switch_reg mv88e61xx_switch_read
 #else
-#define WR_PHY miiphy_write
-#define RD_PHY miiphy_read
+/* switch appears a s simple PHY and can thus use miiphy */
+#define wr_switch_reg miiphy_write
+#define rd_switch_reg miiphy_read
 #endif /* CONFIG_MV88E61XX_MULTICHIP_ADRMODE */
 
 #endif /* _MV88E61XX_H */