+++ /dev/null
-/*
- * arch/ubicom32/mach-common/switch-bcm539x.c
- * BCM539X switch driver, SPI mode
- *
- * (C) Copyright 2009, Ubicom, Inc.
- *
- * This file is part of the Ubicom32 Linux Kernel Port.
- *
- * The Ubicom32 Linux Kernel Port 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.
- *
- * The Ubicom32 Linux Kernel Port 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 the Ubicom32 Linux Kernel Port. If not,
- * see <http://www.gnu.org/licenses/>.
- *
- * Ubicom32 implementation derived from (with many thanks):
- * arch/m68knommu
- * arch/blackfin
- * arch/parisc
- */
-
-#include <linux/platform_device.h>
-#include <linux/spi/spi.h>
-#include <linux/gpio.h>
-#include <linux/delay.h>
-#include <linux/mii.h>
-
-#include <asm/switch-dev.h>
-#include <asm/ubicom32-spi-gpio.h>
-#include "switch-core.h"
-#include "switch-bcm539x-reg.h"
-
-#define DRIVER_NAME "bcm539x-spi"
-#define DRIVER_VERSION "1.0"
-
-#undef BCM539X_DEBUG
-#define BCM539X_SPI_RETRIES 100
-
-struct bcm539x_data {
- struct switch_device *switch_dev;
-
- /*
- * Our private data
- */
- struct spi_device *spi;
- struct switch_core_platform_data *pdata;
-
- /*
- * Last page we accessed
- */
- u8_t last_page;
-
- /*
- * 539x Device ID
- */
- u8_t device_id;
-};
-
-/*
- * bcm539x_wait_status
- * Waits for the specified bit in the status register to be set/cleared.
- */
-static int bcm539x_wait_status(struct bcm539x_data *bd, u8_t mask, int set)
-{
- u8_t txbuf[2];
- u8_t rxbuf;
- int i;
- int ret;
-
- txbuf[0] = BCM539X_CMD_READ;
- txbuf[1] = BCM539X_GLOBAL_SPI_STATUS;
- for (i = 0; i < BCM539X_SPI_RETRIES; i++) {
- ret = spi_write_then_read(bd->spi, txbuf, 2, &rxbuf, 1);
- rxbuf &= mask;
- if ((set && rxbuf) || (!set && !rxbuf)) {
- return 0;
- }
- udelay(1);
- }
-
- return -EIO;
-}
-
-/*
- * bcm539x_set_page
- * Sets the register page for access (only if necessary)
- */
-static int bcm539x_set_page(struct bcm539x_data *bd, u8_t page)
-{
- u8_t txbuf[3];
-
- if (page == bd->last_page) {
- return 0;
- }
-
- bd->last_page = page;
-
- txbuf[0] = BCM539X_CMD_WRITE;
- txbuf[1] = BCM539X_GLOBAL_PAGE;
- txbuf[2] = page;
-
- return spi_write(bd->spi, txbuf, 3);
-}
-
-/*
- * bcm539x_write_bytes
- * Writes a number of bytes to a given page and register
- */
-static int bcm539x_write_bytes(struct bcm539x_data *bd, u8_t page,
- u8_t reg, void *buf, u8_t len)
-{
- int ret;
- u8_t *txbuf;
-
- txbuf = kmalloc(2 + len, GFP_KERNEL);
- if (!txbuf) {
- return -ENOMEM;
- }
-
- /*
- * Make sure the chip has finished processing our previous request
- */
- ret = bcm539x_wait_status(bd, BCM539X_GLOBAL_SPI_ST_SPIF, 0);
- if (ret) {
- goto done;
- }
-
- /*
- * Set the page
- */
- ret = bcm539x_set_page(bd, page);
- if (ret) {
- goto done;
- }
-
- /*
- * Read the data
- */
- txbuf[0] = BCM539X_CMD_WRITE;
- txbuf[1] = reg;
- memcpy(&txbuf[2], buf, len);
-
-#ifdef BCM539X_DEBUG
- {
- int i;
- printk("write page %02x reg %02x len=%d buf=", page, reg, len);
- for (i = 0; i < len + 2; i++) {
- printk("%02x ", txbuf[i]);
- }
- printk("\n");
- }
-#endif
-
- ret = spi_write(bd->spi, txbuf, 2 + len);
-
-done:
- kfree(txbuf);
- return ret;
-}
-
-/*
- * bcm539x_write_32
- * Writes 32 bits of data to the given page and register
- */
-static inline int bcm539x_write_32(struct bcm539x_data *bd, u8_t page,
- u8_t reg, u32_t data)
-{
- data = cpu_to_le32(data);
- return bcm539x_write_bytes(bd, page, reg, &data, 4);
-}
-
-/*
- * bcm539x_write_16
- * Writes 16 bits of data to the given page and register
- */
-static inline int bcm539x_write_16(struct bcm539x_data *bd, u8_t page,
- u8_t reg, u16_t data)
-{
- data = cpu_to_le16(data);
- return bcm539x_write_bytes(bd, page, reg, &data, 2);
-}
-
-/*
- * bcm539x_write_8
- * Writes 8 bits of data to the given page and register
- */
-static inline int bcm539x_write_8(struct bcm539x_data *bd, u8_t page,
- u8_t reg, u8_t data)
-{
- return bcm539x_write_bytes(bd, page, reg, &data, 1);
-}
-
-/*
- * bcm539x_read_bytes
- * Reads a number of bytes from a given page and register
- */
-static int bcm539x_read_bytes(struct bcm539x_data *bd, u8_t page,
- u8_t reg, void *buf, u8_t len)
-{
- u8_t txbuf[2];
- int ret;
-
- /*
- * (1) Make sure the chip has finished processing our previous request
- */
- ret = bcm539x_wait_status(bd, BCM539X_GLOBAL_SPI_ST_SPIF, 0);
- if (ret) {
- return ret;
- }
-
- /*
- * (2) Set the page
- */
- ret = bcm539x_set_page(bd, page);
- if (ret) {
- return ret;
- }
-
- /*
- * (3) Kick off the register read
- */
- txbuf[0] = BCM539X_CMD_READ;
- txbuf[1] = reg;
- ret = spi_write_then_read(bd->spi, txbuf, 2, txbuf, 1);
- if (ret) {
- return ret;
- }
-
- /*
- * (4) Wait for RACK
- */
- ret = bcm539x_wait_status(bd, BCM539X_GLOBAL_SPI_ST_RACK, 1);
- if (ret) {
- return ret;
- }
-
- /*
- * (5) Read the data
- */
- txbuf[0] = BCM539X_CMD_READ;
- txbuf[1] = BCM539X_GLOBAL_SPI_DATA0;
-
- ret = spi_write_then_read(bd->spi, txbuf, 2, buf, len);
-
-#ifdef BCM539X_DEBUG
- {
- int i;
- printk("read page %02x reg %02x len=%d rxbuf=",
- page, reg, len);
- for (i = 0; i < len; i++) {
- printk("%02x ", ((u8_t *)buf)[i]);
- }
- printk("\n");
- }
-#endif
-
- return ret;
-}
-
-/*
- * bcm539x_read_32
- * Reads an 32 bit number from a given page and register
- */
-static int bcm539x_read_32(struct bcm539x_data *bd, u8_t page,
- u8_t reg, u32_t *buf)
-{
- int ret = bcm539x_read_bytes(bd, page, reg, buf, 4);
- *buf = le32_to_cpu(*buf);
- return ret;
-}
-
-/*
- * bcm539x_read_16
- * Reads an 16 bit number from a given page and register
- */
-static int bcm539x_read_16(struct bcm539x_data *bd, u8_t page,
- u8_t reg, u16_t *buf)
-{
- int ret = bcm539x_read_bytes(bd, page, reg, buf, 2);
- *buf = le16_to_cpu(*buf);
- return ret;
-}
-
-/*
- * bcm539x_read_8
- * Reads an 8 bit number from a given page and register
- */
-static int bcm539x_read_8(struct bcm539x_data *bd, u8_t page,
- u8_t reg, u8_t *buf)
-{
- return bcm539x_read_bytes(bd, page, reg, buf, 1);
-}
-
-/*
- * bcm539x_set_mode
- */
-static int bcm539x_set_mode(struct bcm539x_data *bd, int state)
-{
- u8_t buf;
- int ret;
-
- ret = bcm539x_read_8(bd, PAGE_PORT_TC, REG_CTRL_MODE, &buf);
- if (ret) {
- return ret;
- }
-
- buf &= ~(1 << 1);
- buf |= state ? (1 << 1) : 0;
-
- ret = bcm539x_write_8(bd, PAGE_PORT_TC, REG_CTRL_MODE, buf);
- return ret;
-}
-
-/*
- * bcm539x_handle_reset
- */
-static int bcm539x_handle_reset(struct switch_device *dev, char *buf, int inst)
-{
- struct bcm539x_data *bd =
- (struct bcm539x_data *)switch_get_drvdata(dev);
- int ret;
-
- ret = bcm539x_write_8(bd, PAGE_PORT_TC, REG_CTRL_SRST,
- (1 << 7) | (1 << 4));
- if (ret) {
- return ret;
- }
-
- udelay(20);
-
- ret = bcm539x_write_8(bd, PAGE_PORT_TC, REG_CTRL_SRST, 0);
- return ret;
-}
-
-/*
- * bcm539x_handle_vlan_ports_read
- */
-static int bcm539x_handle_vlan_ports_read(struct switch_device *dev,
- char *buf, int inst)
-{
- struct bcm539x_data *bd =
- (struct bcm539x_data *)switch_get_drvdata(dev);
- int j;
- int len = 0;
- u8_t rxbuf8;
- u32_t rxbuf32;
- int ret;
-
- ret = bcm539x_write_16(bd, PAGE_VTBL, REG_VTBL_INDX_5395, inst);
- if (ret) {
- return ret;
- }
-
- ret = bcm539x_write_8(bd, PAGE_VTBL, REG_VTBL_ACCESS_5395,
- (1 << 7) | 1);
- if (ret) {
- return ret;
- }
-
- /*
- * Wait for completion
- */
- for (j = 0; j < BCM539X_SPI_RETRIES; j++) {
- ret = bcm539x_read_8(bd, PAGE_VTBL, REG_VTBL_ACCESS_5395,
- &rxbuf8);
- if (ret) {
- return ret;
- }
- if (!(rxbuf8 & (1 << 7))) {
- break;
- }
- }
-
- if (j == BCM539X_SPI_RETRIES) {
- return -EIO;
- }
-
- /*
- * Read the table entry
- */
- ret = bcm539x_read_32(bd, PAGE_VTBL, REG_VTBL_ENTRY_5395, &rxbuf32);
- if (ret) {
- return ret;
- }
-
- for (j = 0; j < 9; j++) {
- if (rxbuf32 & (1 << j)) {
- u16_t rxbuf16;
- len += sprintf(buf + len, "%d", j);
- if (rxbuf32 & (1 << (j + 9))) {
- buf[len++] = 'u';
- } else {
- buf[len++] = 't';
- }
- ret = bcm539x_read_16(bd, PAGE_VLAN,
- REG_VLAN_PTAG0 + (j << 1),
- &rxbuf16);
- if (ret) {
- return ret;
- }
- if (rxbuf16 == inst) {
- buf[len++] = '*';
- }
- buf[len++] = '\t';
- }
- }
-
- len += sprintf(buf + len, "\n");
- buf[len] = '\0';
-
- return len;
-}
-
-/*
- * bcm539x_handle_vlan_ports_write
- */
-static int bcm539x_handle_vlan_ports_write(struct switch_device *dev,
- char *buf, int inst)
-{
- struct bcm539x_data *bd =
- (struct bcm539x_data *)switch_get_drvdata(dev);
- int j;
- u32_t untag;
- u32_t ports;
- u32_t def;
-
- u8_t rxbuf8;
- u16_t rxbuf16;
- int ret;
-
- switch_parse_vlan_ports(dev, buf, &untag, &ports, &def);
-
-#ifdef BCM539X_DEBUG
- printk(KERN_DEBUG "'%s' inst=%d untag=%08x ports=%08x def=%08x\n",
- buf, inst, untag, ports, def);
-#endif
-
- if (!ports) {
- return 0;
- }
-
- /*
- * Change default vlan tag
- */
- for (j = 0; j < 9; j++) {
- if ((untag | def) & (1 << j)) {
- ret = bcm539x_write_16(bd, PAGE_VLAN,
- REG_VLAN_PTAG0 + (j << 1),
- inst);
- if (ret) {
- return ret;
- }
- continue;
- }
-
- if (!(dev->port_mask[0] & (1 << j))) {
- continue;
- }
-
- /*
- * Remove any ports which are not listed anymore as members of
- * this vlan
- */
- ret = bcm539x_read_16(bd, PAGE_VLAN,
- REG_VLAN_PTAG0 + (j << 1), &rxbuf16);
- if (ret) {
- return ret;
- }
- if (rxbuf16 == inst) {
- ret = bcm539x_write_16(bd, PAGE_VLAN,
- REG_VLAN_PTAG0 + (j << 1), 0);
- if (ret) {
- return ret;
- }
- }
- }
-
- /*
- * Write the VLAN table
- */
- ret = bcm539x_write_16(bd, PAGE_VTBL, REG_VTBL_INDX_5395, inst);
- if (ret) {
- return ret;
- }
-
- ret = bcm539x_write_32(bd, PAGE_VTBL, REG_VTBL_ENTRY_5395,
- (untag << 9) | ports);
- if (ret) {
- return ret;
- }
-
- ret = bcm539x_write_8(bd, PAGE_VTBL, REG_VTBL_ACCESS_5395,
- (1 << 7) | 0);
- if (ret) {
- return ret;
- }
-
- /*
- * Wait for completion
- */
- for (j = 0; j < BCM539X_SPI_RETRIES; j++) {
- ret = bcm539x_read_bytes(bd, PAGE_VTBL, REG_VTBL_ACCESS_5395,
- &rxbuf8, 1);
- if (ret) {
- return ret;
- }
- if (!(rxbuf8 & (1 << 7))) {
- break;
- }
- }
-
- return (j < BCM539X_SPI_RETRIES) ? 0 : -EIO;
-}
-
-/*
- * Handlers for <this_driver>/vlan/<vlan_id>
- */
-static const struct switch_handler bcm539x_switch_handlers_vlan_dir[] = {
- {
- .name = "ports",
- .read = bcm539x_handle_vlan_ports_read,
- .write = bcm539x_handle_vlan_ports_write,
- },
- {
- },
-};
-
-/*
- * bcm539x_handle_vlan_delete_write
- */
-static int bcm539x_handle_vlan_delete_write(struct switch_device *dev,
- char *buf, int inst)
-{
- struct bcm539x_data *bd =
- (struct bcm539x_data *)switch_get_drvdata(dev);
- int vid;
- u8_t rxbuf8;
- u32_t txbuf;
- int j;
- int ret;
-
- vid = simple_strtoul(buf, NULL, 0);
- if (!vid) {
- return -EINVAL;
- }
-
- /*
- * Disable this VLAN
- *
- * Go through the port-based vlan registers and clear the appropriate
- * ones out
- */
- for (j = 0; j < 9; j++) {
- u16_t rxbuf16;
- ret = bcm539x_read_16(bd, PAGE_VLAN, REG_VLAN_PTAG0 + (j << 1),
- &rxbuf16);
- if (ret) {
- return ret;
- }
- if (rxbuf16 == vid) {
- txbuf = 0;
- ret = bcm539x_write_16(bd, PAGE_VLAN,
- REG_VLAN_PTAG0 + (j << 1),
- txbuf);
- if (ret) {
- return ret;
- }
- }
- }
-
- /*
- * Write the VLAN table
- */
- txbuf = vid;
- ret = bcm539x_write_16(bd, PAGE_VTBL, REG_VTBL_INDX_5395, txbuf);
- if (ret) {
- return ret;
- }
-
- txbuf = 0;
- ret = bcm539x_write_32(bd, PAGE_VTBL, REG_VTBL_ENTRY_5395, txbuf);
- if (ret) {
- return ret;
- }
-
- txbuf = (1 << 7) | (0);
- ret = bcm539x_write_8(bd, PAGE_VTBL, REG_VTBL_ACCESS_5395, txbuf);
- if (ret) {
- return ret;
- }
-
- /*
- * Wait for completion
- */
- for (j = 0; j < BCM539X_SPI_RETRIES; j++) {
- ret = bcm539x_read_bytes(bd, PAGE_VTBL, REG_VTBL_ACCESS_5395,
- &rxbuf8, 1);
- if (ret) {
- return ret;
- }
- if (!(rxbuf8 & (1 << 7))) {
- break;
- }
- }
-
- if (j == BCM539X_SPI_RETRIES) {
- return -EIO;
- }
-
- return switch_remove_vlan_dir(dev, vid);
-}
-
-/*
- * bcm539x_handle_vlan_create_write
- */
-static int bcm539x_handle_vlan_create_write(struct switch_device *dev,
- char *buf, int inst)
-{
- int vid;
-
- vid = simple_strtoul(buf, NULL, 0);
- if (!vid) {
- return -EINVAL;
- }
-
- return switch_create_vlan_dir(dev, vid,
- bcm539x_switch_handlers_vlan_dir);
-}
-
-/*
- * bcm539x_handle_enable_read
- */
-static int bcm539x_handle_enable_read(struct switch_device *dev,
- char *buf, int inst)
-{
- struct bcm539x_data *bd =
- (struct bcm539x_data *)switch_get_drvdata(dev);
- u8_t rxbuf;
- int ret;
-
- ret = bcm539x_read_8(bd, PAGE_PORT_TC, REG_CTRL_MODE, &rxbuf);
- if (ret) {
- return ret;
- }
- rxbuf = (rxbuf & (1 << 1)) ? 1 : 0;
-
- return sprintf(buf, "%d\n", rxbuf);
-}
-
-/*
- * bcm539x_handle_enable_write
- */
-static int bcm539x_handle_enable_write(struct switch_device *dev,
- char *buf, int inst)
-{
- struct bcm539x_data *bd =
- (struct bcm539x_data *)switch_get_drvdata(dev);
-
- return bcm539x_set_mode(bd, buf[0] == '1');
-}
-
-/*
- * bcm539x_handle_enable_vlan_read
- */
-static int bcm539x_handle_enable_vlan_read(struct switch_device *dev,
- char *buf, int inst)
-{
- struct bcm539x_data *bd =
- (struct bcm539x_data *)switch_get_drvdata(dev);
- u8_t rxbuf;
- int ret;
-
- ret = bcm539x_read_8(bd, PAGE_VLAN, REG_VLAN_CTRL0, &rxbuf);
- if (ret) {
- return ret;
- }
- rxbuf = (rxbuf & (1 << 7)) ? 1 : 0;
-
- return sprintf(buf, "%d\n", rxbuf);
-}
-
-/*
- * bcm539x_handle_enable_vlan_write
- */
-static int bcm539x_handle_enable_vlan_write(struct switch_device *dev,
- char *buf, int inst)
-{
- struct bcm539x_data *bd =
- (struct bcm539x_data *)switch_get_drvdata(dev);
- int ret;
-
- /*
- * disable 802.1Q VLANs
- */
- if (buf[0] != '1') {
- ret = bcm539x_write_8(bd, PAGE_VLAN, REG_VLAN_CTRL0, 0);
- return ret;
- }
-
- /*
- * enable 802.1Q VLANs
- *
- * Enable 802.1Q | IVL learning
- */
- ret = bcm539x_write_8(bd, PAGE_VLAN, REG_VLAN_CTRL0,
- (1 << 7) | (3 << 5));
- if (ret) {
- return ret;
- }
-
- /*
- * RSV multicast fwd | RSV multicast chk
- */
- ret = bcm539x_write_8(bd, PAGE_VLAN, REG_VLAN_CTRL1,
- (1 << 2) | (1 << 3));
- if (ret) {
- return ret;
- }
-#if 0
- /*
- * Drop invalid VID
- */
- ret = bcm539x_write_16(bd, PAGE_VLAN, REG_VLAN_CTRL3, 0x00FF);
- if (ret) {
- return ret;
- }
-#endif
- return 0;
-}
-
-/*
- * bcm539x_handle_port_enable_read
- */
-static int bcm539x_handle_port_enable_read(struct switch_device *dev,
- char *buf, int inst)
-{
- return sprintf(buf, "%d\n", 1);
-}
-
-/*
- * bcm539x_handle_port_enable_write
- */
-static int bcm539x_handle_port_enable_write(struct switch_device *dev,
- char *buf, int inst)
-{
- /*
- * validate port
- */
- if (!(dev->port_mask[0] & (1 << inst))) {
- return -EIO;
- }
-
- if (buf[0] != '1') {
- printk(KERN_WARNING "switch port[%d] disabling is not supported\n", inst);
- }
- return 0;
-}
-
-/*
- * bcm539x_handle_port_state_read
- */
-static int bcm539x_handle_port_state_read(struct switch_device *dev,
- char *buf, int inst)
-{
- struct bcm539x_data *bd =
- (struct bcm539x_data *)switch_get_drvdata(dev);
- int ret;
- u16_t link;
-
- /*
- * validate port
- */
- if (!(dev->port_mask[0] & (1 << inst))) {
- return -EIO;
- }
-
- /*
- * check PHY link state - CPU port (port 8) is always up
- */
- ret = bcm539x_read_16(bd, PAGE_STATUS, REG_LINK_STATUS, &link);
- if (ret) {
- return ret;
- }
- link |= (1 << 8);
-
- return sprintf(buf, "%d\n", (link & (1 << inst)) ? 1 : 0);
-}
-
-/*
- * bcm539x_handle_port_media_read
- */
-static int bcm539x_handle_port_media_read(struct switch_device *dev,
- char *buf, int inst)
-{
- struct bcm539x_data *bd =
- (struct bcm539x_data *)switch_get_drvdata(dev);
- int ret;
- u16_t link, duplex;
- u32_t speed;
-
- /*
- * validate port
- */
- if (!(dev->port_mask[0] & (1 << inst))) {
- return -EIO;
- }
-
- /*
- * check PHY link state first - CPU port (port 8) is always up
- */
- ret = bcm539x_read_16(bd, PAGE_STATUS, REG_LINK_STATUS, &link);
- if (ret) {
- return ret;
- }
- link |= (1 << 8);
-
- if (!(link & (1 << inst))) {
- return sprintf(buf, "UNKNOWN\n");
- }
-
- /*
- * get link speeda dn duplex - CPU port (port 8) is 1000/full
- */
- ret = bcm539x_read_32(bd, PAGE_STATUS, 4, &speed);
- if (ret) {
- return ret;
- }
- speed |= (2 << 16);
- speed = (speed >> (2 * inst)) & 3;
-
- ret = bcm539x_read_16(bd, PAGE_STATUS, 8, &duplex);
- if (ret) {
- return ret;
- }
- duplex |= (1 << 8);
- duplex = (duplex >> inst) & 1;
-
- return sprintf(buf, "%d%cD\n",
- (speed == 0) ? 10 : ((speed == 1) ? 100 : 1000),
- duplex ? 'F' : 'H');
-}
-
-/*
- * bcm539x_handle_port_meida_write
- */
-static int bcm539x_handle_port_meida_write(struct switch_device *dev,
- char *buf, int inst)
-{
- struct bcm539x_data *bd =
- (struct bcm539x_data *)switch_get_drvdata(dev);
- int ret;
- u16_t ctrl_word, local_cap, local_giga_cap;
-
- /*
- * validate port (not for CPU port)
- */
- if (!(dev->port_mask[0] & (1 << inst) & ~(1 << 8))) {
- return -EIO;
- }
-
- /*
- * Get the maximum capability from status
- * SPI reg[0x00] = PHY[0x0] --- MII control
- * SPI reg[0x08] = PHY[0x4] --- MII local capability
- * SPI reg[0x12] = PHY[0x9] --- GMII control
- */
- ret = bcm539x_read_16(bd, REG_MII_PAGE + inst, (MII_ADVERTISE << 1), &local_cap);
- if (ret) {
- return ret;
- }
- ret = bcm539x_read_16(bd, REG_MII_PAGE + inst, (MII_CTRL1000 << 1), &local_giga_cap);
- if (ret) {
- return ret;
- }
-
- /* Configure to the requested speed */
- if (strncmp(buf, "1000FD", 6) == 0) {
- /* speed */
- local_cap &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL);
- local_cap &= ~(ADVERTISE_100HALF | ADVERTISE_100FULL);
- local_giga_cap |= (ADVERTISE_1000HALF | ADVERTISE_1000FULL);
- /* duplex */
- } else if (strncmp(buf, "100FD", 5) == 0) {
- /* speed */
- local_cap &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL);
- local_cap |= (ADVERTISE_100HALF | ADVERTISE_100FULL);
- local_giga_cap &= ~(ADVERTISE_1000HALF | ADVERTISE_1000FULL);
- /* duplex */
- local_cap &= ~(ADVERTISE_100HALF);
- } else if (strncmp(buf, "100HD", 5) == 0) {
- /* speed */
- local_cap &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL);
- local_cap |= (ADVERTISE_100HALF | ADVERTISE_100FULL);
- local_giga_cap &= ~(ADVERTISE_1000HALF | ADVERTISE_1000FULL);
- /* duplex */
- local_cap &= ~(ADVERTISE_100FULL);
- } else if (strncmp(buf, "10FD", 4) == 0) {
- /* speed */
- local_cap |= (ADVERTISE_10HALF | ADVERTISE_10FULL);
- local_cap &= ~(ADVERTISE_100HALF | ADVERTISE_100FULL);
- local_giga_cap &= ~(ADVERTISE_1000HALF | ADVERTISE_1000FULL);
- /* duplex */
- local_cap &= ~(ADVERTISE_10HALF);
- } else if (strncmp(buf, "10HD", 4) == 0) {
- /* speed */
- local_cap |= (ADVERTISE_10HALF | ADVERTISE_10FULL);
- local_cap &= ~(ADVERTISE_100HALF | ADVERTISE_100FULL);
- local_giga_cap &= ~(ADVERTISE_1000HALF | ADVERTISE_1000FULL);
- /* duplex */
- local_cap &= ~(ADVERTISE_10FULL);
- } else if (strncmp(buf, "AUTO", 4) == 0) {
- /* speed */
- local_cap |= (ADVERTISE_10HALF | ADVERTISE_10FULL);
- local_cap |= (ADVERTISE_100HALF | ADVERTISE_100FULL);
- local_giga_cap |= (ADVERTISE_1000HALF | ADVERTISE_1000FULL);
- } else {
- return -EINVAL;
- }
-
- /* Active PHY with the requested speed for auto-negotiation */
- ret = bcm539x_write_16(bd, REG_MII_PAGE + inst, (MII_ADVERTISE << 1), local_cap);
- if (ret) {
- return ret;
- }
- ret = bcm539x_write_16(bd, REG_MII_PAGE + inst, (MII_CTRL1000 << 1), local_giga_cap);
- if (ret) {
- return ret;
- }
-
- ret = bcm539x_read_16(bd, REG_MII_PAGE + inst, (MII_BMCR << 1), &ctrl_word);
- if (ret) {
- return ret;
- }
- ctrl_word |= (BMCR_ANENABLE | BMCR_ANRESTART);
- ret = bcm539x_write_16(bd, REG_MII_PAGE + inst, (MII_BMCR << 1), ctrl_word);
- if (ret) {
- return ret;
- }
-
- return 0;
-}
-
-/*
- * proc_fs entries for this switch
- */
-static const struct switch_handler bcm539x_switch_handlers[] = {
- {
- .name = "enable",
- .read = bcm539x_handle_enable_read,
- .write = bcm539x_handle_enable_write,
- },
- {
- .name = "enable_vlan",
- .read = bcm539x_handle_enable_vlan_read,
- .write = bcm539x_handle_enable_vlan_write,
- },
- {
- .name = "reset",
- .write = bcm539x_handle_reset,
- },
- {
- },
-};
-
-/*
- * Handlers for <this_driver>/vlan
- */
-static const struct switch_handler bcm539x_switch_handlers_vlan[] = {
- {
- .name = "delete",
- .write = bcm539x_handle_vlan_delete_write,
- },
- {
- .name = "create",
- .write = bcm539x_handle_vlan_create_write,
- },
- {
- },
-};
-
-/*
- * Handlers for <this_driver>/port/<port number>
- */
-static const struct switch_handler bcm539x_switch_handlers_port[] = {
- {
- .name = "enable",
- .read = bcm539x_handle_port_enable_read,
- .write = bcm539x_handle_port_enable_write,
- },
- {
- .name = "state",
- .read = bcm539x_handle_port_state_read,
- },
- {
- .name = "media",
- .read = bcm539x_handle_port_media_read,
- .write = bcm539x_handle_port_meida_write,
- },
- {
- },
-};
-
-/*
- * bcm539x_probe
- */
-static int __devinit bcm539x_probe(struct spi_device *spi)
-{
- struct bcm539x_data *bd;
- struct switch_core_platform_data *pdata;
- struct switch_device *switch_dev = NULL;
- int i, ret;
- u8_t txbuf[2];
-
- pdata = spi->dev.platform_data;
- if (!pdata) {
- return -EINVAL;
- }
-
- ret = spi_setup(spi);
- if (ret < 0) {
- return ret;
- }
-
- /*
- * Reset the chip if requested
- */
- if (pdata->flags & SWITCH_DEV_FLAG_HW_RESET) {
- ret = gpio_request(pdata->pin_reset, "switch-bcm539x-reset");
- if (ret) {
- printk(KERN_WARNING "Could not request reset\n");
- return -EINVAL;
- }
-
- gpio_direction_output(pdata->pin_reset, 0);
- udelay(10);
- gpio_set_value(pdata->pin_reset, 1);
- udelay(20);
- }
-
- /*
- * Allocate our private data structure
- */
- bd = kzalloc(sizeof(struct bcm539x_data), GFP_KERNEL);
- if (!bd) {
- return -ENOMEM;
- }
-
- dev_set_drvdata(&spi->dev, bd);
- bd->pdata = pdata;
- bd->spi = spi;
- bd->last_page = 0xFF;
-
- /*
- * First perform SW reset if needed
- */
- if (pdata->flags & SWITCH_DEV_FLAG_SW_RESET) {
- txbuf[0] = (1 << 7) | (1 << 4);
- ret = bcm539x_write_bytes(bd, PAGE_PORT_TC,
- REG_CTRL_SRST, txbuf, 1);
- if (ret) {
- goto fail;
- }
-
- udelay(20);
-
- txbuf[0] = 0;
- ret = bcm539x_write_bytes(bd, PAGE_PORT_TC,
- REG_CTRL_SRST, txbuf, 1);
- if (ret) {
- goto fail;
- }
- }
-
- /*
- * See if we can see the chip
- */
- for (i = 0; i < 10; i++) {
- ret = bcm539x_read_bytes(bd, PAGE_MMR, REG_DEVICE_ID,
- &bd->device_id, 1);
- if (!ret) {
- break;
- }
- }
- if (ret) {
- goto fail;
- }
-
- /*
- * We only support 5395, 5397, 5398
- */
- if ((bd->device_id != 0x95) && (bd->device_id != 0x97) &&
- (bd->device_id != 0x98)) {
- ret = -ENODEV;
- goto fail;
- }
-
- /*
- * Override CPU port config: fixed link @1000 with flow control
- */
- ret = bcm539x_read_8(bd, PAGE_PORT_TC, REG_CTRL_MIIPO, txbuf);
- bcm539x_write_8(bd, PAGE_PORT_TC, REG_CTRL_MIIPO, 0xbb); // Override IMP port config
- printk("Broadcom SW CPU port setting: 0x%x -> 0xbb\n", txbuf[0]);
-
- /*
- * Setup the switch driver structure
- */
- switch_dev = switch_alloc();
- if (!switch_dev) {
- ret = -ENOMEM;
- goto fail;
- }
- switch_dev->name = pdata->name;
-
- switch_dev->ports = (bd->device_id == 0x98) ? 9 : 6;
- switch_dev->port_mask[0] = (bd->device_id == 0x98) ? 0x1FF : 0x11F;
- switch_dev->driver_handlers = bcm539x_switch_handlers;
- switch_dev->reg_handlers = NULL;
- switch_dev->vlan_handlers = bcm539x_switch_handlers_vlan;
- switch_dev->port_handlers = bcm539x_switch_handlers_port;
-
- bd->switch_dev = switch_dev;
- switch_set_drvdata(switch_dev, (void *)bd);
-
- ret = switch_register(bd->switch_dev);
- if (ret < 0) {
- goto fail;
- }
-
- printk(KERN_INFO "bcm53%02x switch chip initialized\n", bd->device_id);
-
- return ret;
-
-fail:
- if (switch_dev) {
- switch_release(switch_dev);
- }
- dev_set_drvdata(&spi->dev, NULL);
- kfree(bd);
- return ret;
-}
-
-static int __attribute__((unused)) bcm539x_remove(struct spi_device *spi)
-{
- struct bcm539x_data *bd;
-
- bd = dev_get_drvdata(&spi->dev);
-
- if (bd->pdata->flags & SWITCH_DEV_FLAG_HW_RESET) {
- gpio_free(bd->pdata->pin_reset);
- }
-
- if (bd->switch_dev) {
- switch_unregister(bd->switch_dev);
- switch_release(bd->switch_dev);
- }
-
- dev_set_drvdata(&spi->dev, NULL);
-
- kfree(bd);
-
- return 0;
-}
-
-static struct spi_driver bcm539x_driver = {
- .driver = {
- .name = DRIVER_NAME,
- .owner = THIS_MODULE,
- },
- .probe = bcm539x_probe,
- .remove = __devexit_p(bcm539x_remove),
-};
-
-static int __init bcm539x_init(void)
-{
- return spi_register_driver(&bcm539x_driver);
-}
-
-module_init(bcm539x_init);
-
-static void __exit bcm539x_exit(void)
-{
- spi_unregister_driver(&bcm539x_driver);
-}
-module_exit(bcm539x_exit);
-
-MODULE_AUTHOR("Pat Tjin");
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("bcm539x SPI switch chip driver");
projects / openwrt / svn-archive / archive.git / blobdiff