Marvell MV88E61XX Switch Driver support
Chips supported:-
1. 88E6161 6 port gbe swtich with 5 integrated PHYs
2. 88E6165 6 port gbe swtich with 5 integrated PHYs
2. 88E6132 3 port gbe swtich with 2 integrated PHYs
Platform specific configuration supported for:-
default or router port vlan configuration
led_init configuration
mdip/n polarity reversal configuration
Note: This driver is supported and tested against
kirkwood egiga interface
Contributors:
Yotam Admon <yotam@marvell.com>
Michael Blostein <michaelbl@marvell.com
Reviewed by: Ronen Shitrit <rshitrit@marvell.com>
Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
diff --git a/drivers/net/phy/mv88e61xx.c b/drivers/net/phy/mv88e61xx.c
new file mode 100644
index 0000000..ec47286
--- /dev/null
+++ b/drivers/net/phy/mv88e61xx.c
@@ -0,0 +1,413 @@
+/*
+ * (C) Copyright 2009
+ * Marvell Semiconductor <www.marvell.com>
+ * Prafulla Wadaskar <prafulla@marvell.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <common.h>
+#include <netdev.h>
+#include "mv88e61xx.h"
+
+#ifdef CONFIG_MV88E61XX_MULTICHIP_ADRMODE
+/* Chip Address mode
+ * The Switch support two modes of operation
+ * 1. single chip mode and
+ * 2. Multi-chip mode
+ * Refer section 9.2 &9.3 in chip datasheet-02 for more details
+ *
+ * By default single chip mode is configured
+ * multichip mode operation can be configured in board header
+ */
+static int mv88e61xx_busychk_multic(u32 devaddr)
+{
+ u32 reg = 0;
+ u32 timeout = MV88E61XX_PHY_TIMEOUT;
+
+ /* Poll till SMIBusy bit is clear */
+ do {
+ miiphy_read(name, devaddr, 0x0, ®);
+ if (timeout-- == 0) {
+ printf("SMI busy timeout\n");
+ return -1;
+ }
+ } while (reg & (1 << 15));
+ return 0;
+}
+
+static void mv88e61xx_wr_phy(char *name, u32 phy_adr, u32 reg_ofs, u16 data)
+{
+ u16 reg;
+ u32 mii_dev_addr;
+
+ /* command to read PHY dev address */
+ if (!miiphy_read(name, 0xEE, 0xEE, &mii_dev_addr)) {
+ printf("Error..could not read PHY dev address\n");
+ return;
+ }
+ mv88e61xx_busychk_multic(mii_dev_addr);
+ /* Write data to Switch indirect data register */
+ miiphy_write(name, mii_dev_addr, 0x1, data);
+ /* Write command to Switch indirect command register (write) */
+ miiphy_write(name, mii_dev_addr, 0x0,
+ reg_ofs | (phy_adr << 5) | (1 << 10) | (1 << 12) | (1 <<
+ 15));
+}
+
+static void mv88e61xx_rd_phy(char *name, u32 phy_adr, u32 reg_ofs, u16 * data)
+{
+ u16 reg;
+ u32 mii_dev_addr;
+
+ /* command to read PHY dev address */
+ if (!miiphy_read(name, 0xEE, 0xEE, &mii_dev_addr)) {
+ printf("Error..could not read PHY dev address\n");
+ return;
+ }
+ mv88e61xx_busychk_multic(mii_dev_addr);
+ /* Write command to Switch indirect command register (read) */
+ miiphy_write(name, mii_dev_addr, 0x0,
+ reg_ofs | (phy_adr << 5) | (1 << 10) | (1 << 12) | (1 <<
+ 15));
+ mv88e61xx_busychk_multic(mii_dev_addr);
+ /* Read data from Switch indirect data register */
+ miiphy_read(name, mii_dev_addr, 0x1, (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 &= ~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 &= ~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 &= ~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 &= ~((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 &= ~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, ®);
+ 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);
+ }
+ }
+ }
+
+ /*
+ * 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 |= 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 &= ~0x3;
+ WR_PHY(name, ports_ofs + prt,
+ MV88E61XX_PRT_CTRL_REG, reg);
+ }
+ }
+}
+
+/*
+ * Make sure SMIBusy bit cleared before another
+ * SMI operation can take place
+ */
+static int mv88e61xx_busychk(char *name)
+{
+ u32 reg = 0;
+ u32 timeout = MV88E61XX_PHY_TIMEOUT;
+ do {
+ RD_PHY(name, MV88E61XX_GLB2REG_DEVADR,
+ MV88E61XX_PHY_CMD, (u16 *) & reg);
+ if (timeout-- == 0) {
+ printf("SMI busy timeout\n");
+ return -1;
+ }
+ } while (reg & 1 << 28); /* busy mask */
+ return 0;
+}
+
+/*
+ * Power up the specified port and reset PHY
+ */
+static int mv88361xx_powerup(struct mv88e61xx_config *swconfig, u32 prt)
+{
+ char *name = swconfig->name;
+
+ /* Write Copper Specific control reg1 (0x14) 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))
+ 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))
+ return -1;
+
+ return 0;
+}
+
+/*
+ * Default Setup for LED[0]_Control (ref: Table 46 Datasheet-3)
+ * is set to "On-1000Mb/s Link, Off Else"
+ * This function sets it to "On-Link, Blink-Activity, Off-NoLink"
+ *
+ * This is optional settings may be needed on some boards
+ * 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)
+{
+ 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))
+ 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))
+ 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))
+ return -1;
+
+ return 0;
+}
+
+/*
+ * Reverse Transmit polarity for Media Dependent Interface
+ * Pins (MDIP) bits in Copper Specific Control Register 3
+ * (Page 0, Reg 20 for each phy (except cpu port)
+ * Reference: Section 1.1 Switch datasheet-3
+ *
+ * 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)
+{
+ 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))
+ return -1;
+
+ return 0;
+}
+
+/*
+ * Marvell 88E61XX Switch initialization
+ */
+int mv88e61xx_switch_initialize(struct mv88e61xx_config *swconfig)
+{
+ u32 prt;
+ u16 reg;
+ char *idstr;
+ char *name = swconfig->name;
+
+ if (miiphy_set_current_dev(name)) {
+ printf("%s failed\n", __FUNCTION__);
+ return -1;
+ }
+
+ if (!(swconfig->cpuport & ((1 << 4) | (1 << 5)))) {
+ swconfig->cpuport = (1 << 5);
+ printf("Invalid cpu port config, using default port5\n");
+ }
+
+ RD_PHY(name, MV88E61XX_PRT_OFST, PHY_PHYIDR2, ®);
+ reg &= 0xfff0;
+ if (reg == 0x1610)
+ idstr = "88E6161";
+ if (reg == 0x1650)
+ idstr = "88E6165";
+ if (reg == 0x1210) {
+ idstr = "88E6123";
+ /* ports 2,3,4 not available */
+ swconfig->ports_enabled &= 0x023;
+ }
+
+ /* 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;
+ }
+
+ 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);
+ }
+
+ for (prt = 0; prt < MV88E61XX_MAX_PORTS_NUM; prt++) {
+ if (!((1 << prt) & swconfig->cpuport)) {
+
+ if (mv88361xx_led_init(swconfig, prt))
+ return -1;
+ if (mv88361xx_reverse_mdipn(swconfig, prt))
+ return -1;
+ if (mv88361xx_powerup(swconfig, prt))
+ return -1;
+ }
+
+ /*Program port state */
+ RD_PHY(name, MV88E61XX_PRT_OFST + prt,
+ MV88E61XX_PRT_CTRL_REG, ®);
+ WR_PHY(name, MV88E61XX_PRT_OFST + prt,
+ MV88E61XX_PRT_CTRL_REG,
+ reg | (swconfig->portstate & 0x03));
+ }
+
+ printf("%s Initialized on %s\n", idstr, name);
+ return 0;
+}