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openwrt/target/linux/generic/files/drivers/net/phy/rtl8366s.c
Christian Lamparter 910c2f9e68 generic: rtl836x: support defered probe on mdio-bus 
On the WNDAP620, the mdio and mdc lines are controlled by
the EMAC ethernet device. This results in a hen-vs-egg problem.
The rtl8367b driver is probed before the ethernet driver and
the mdio-bus is not available yet, which caused the rtl8367b
driver to fail.

This patch changes the rtl8366_smi_probe_of() function to
return -EPROBE_DEFER if the mdio-bus lookup failed and changes
rtl8366_smi_probe()'s signature to return the error code back to
the callee, so it can propagate back to the kernel. Which, will
retry the switch probe at a later time.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
2018-11-26 12:05:46 +01:00

1321 lines
33 KiB
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/*
* Platform driver for the Realtek RTL8366S ethernet switch
*
* Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2010 Antti Seppälä <a.seppala@gmail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/delay.h>
#include <linux/skbuff.h>
#include <linux/rtl8366.h>
#include "rtl8366_smi.h"
#define RTL8366S_DRIVER_DESC "Realtek RTL8366S ethernet switch driver"
#define RTL8366S_DRIVER_VER "0.2.2"
#define RTL8366S_PHY_NO_MAX 4
#define RTL8366S_PHY_PAGE_MAX 7
#define RTL8366S_PHY_ADDR_MAX 31
/* Switch Global Configuration register */
#define RTL8366S_SGCR 0x0000
#define RTL8366S_SGCR_EN_BC_STORM_CTRL BIT(0)
#define RTL8366S_SGCR_MAX_LENGTH(_x) (_x << 4)
#define RTL8366S_SGCR_MAX_LENGTH_MASK RTL8366S_SGCR_MAX_LENGTH(0x3)
#define RTL8366S_SGCR_MAX_LENGTH_1522 RTL8366S_SGCR_MAX_LENGTH(0x0)
#define RTL8366S_SGCR_MAX_LENGTH_1536 RTL8366S_SGCR_MAX_LENGTH(0x1)
#define RTL8366S_SGCR_MAX_LENGTH_1552 RTL8366S_SGCR_MAX_LENGTH(0x2)
#define RTL8366S_SGCR_MAX_LENGTH_16000 RTL8366S_SGCR_MAX_LENGTH(0x3)
#define RTL8366S_SGCR_EN_VLAN BIT(13)
/* Port Enable Control register */
#define RTL8366S_PECR 0x0001
/* Green Ethernet Feature (based on GPL_BELKIN_F5D8235-4_v1000 v1.01.24) */
#define RTL8366S_GREEN_ETHERNET_CTRL_REG 0x000a
#define RTL8366S_GREEN_ETHERNET_CTRL_MASK 0x0018
#define RTL8366S_GREEN_ETHERNET_TX_BIT (1 << 3)
#define RTL8366S_GREEN_ETHERNET_RX_BIT (1 << 4)
/* Switch Security Control registers */
#define RTL8366S_SSCR0 0x0002
#define RTL8366S_SSCR1 0x0003
#define RTL8366S_SSCR2 0x0004
#define RTL8366S_SSCR2_DROP_UNKNOWN_DA BIT(0)
#define RTL8366S_RESET_CTRL_REG 0x0100
#define RTL8366S_CHIP_CTRL_RESET_HW 1
#define RTL8366S_CHIP_CTRL_RESET_SW (1 << 1)
#define RTL8366S_CHIP_VERSION_CTRL_REG 0x0104
#define RTL8366S_CHIP_VERSION_MASK 0xf
#define RTL8366S_CHIP_ID_REG 0x0105
#define RTL8366S_CHIP_ID_8366 0x8366
/* PHY registers control */
#define RTL8366S_PHY_ACCESS_CTRL_REG 0x8028
#define RTL8366S_PHY_ACCESS_DATA_REG 0x8029
#define RTL8366S_PHY_CTRL_READ 1
#define RTL8366S_PHY_CTRL_WRITE 0
#define RTL8366S_PHY_REG_MASK 0x1f
#define RTL8366S_PHY_PAGE_OFFSET 5
#define RTL8366S_PHY_PAGE_MASK (0x7 << 5)
#define RTL8366S_PHY_NO_OFFSET 9
#define RTL8366S_PHY_NO_MASK (0x1f << 9)
/* Green Ethernet Feature for PHY ports */
#define RTL8366S_PHY_POWER_SAVING_CTRL_REG 12
#define RTL8366S_PHY_POWER_SAVING_MASK 0x1000
/* LED control registers */
#define RTL8366S_LED_BLINKRATE_REG 0x0420
#define RTL8366S_LED_BLINKRATE_BIT 0
#define RTL8366S_LED_BLINKRATE_MASK 0x0007
#define RTL8366S_LED_CTRL_REG 0x0421
#define RTL8366S_LED_0_1_CTRL_REG 0x0422
#define RTL8366S_LED_2_3_CTRL_REG 0x0423
#define RTL8366S_MIB_COUNT 33
#define RTL8366S_GLOBAL_MIB_COUNT 1
#define RTL8366S_MIB_COUNTER_PORT_OFFSET 0x0040
#define RTL8366S_MIB_COUNTER_BASE 0x1000
#define RTL8366S_MIB_COUNTER_PORT_OFFSET2 0x0008
#define RTL8366S_MIB_COUNTER_BASE2 0x1180
#define RTL8366S_MIB_CTRL_REG 0x11F0
#define RTL8366S_MIB_CTRL_USER_MASK 0x01FF
#define RTL8366S_MIB_CTRL_BUSY_MASK 0x0001
#define RTL8366S_MIB_CTRL_RESET_MASK 0x0002
#define RTL8366S_MIB_CTRL_GLOBAL_RESET_MASK 0x0004
#define RTL8366S_MIB_CTRL_PORT_RESET_BIT 0x0003
#define RTL8366S_MIB_CTRL_PORT_RESET_MASK 0x01FC
#define RTL8366S_PORT_VLAN_CTRL_BASE 0x0058
#define RTL8366S_PORT_VLAN_CTRL_REG(_p) \
(RTL8366S_PORT_VLAN_CTRL_BASE + (_p) / 4)
#define RTL8366S_PORT_VLAN_CTRL_MASK 0xf
#define RTL8366S_PORT_VLAN_CTRL_SHIFT(_p) (4 * ((_p) % 4))
#define RTL8366S_VLAN_TABLE_READ_BASE 0x018B
#define RTL8366S_VLAN_TABLE_WRITE_BASE 0x0185
#define RTL8366S_VLAN_TB_CTRL_REG 0x010F
#define RTL8366S_TABLE_ACCESS_CTRL_REG 0x0180
#define RTL8366S_TABLE_VLAN_READ_CTRL 0x0E01
#define RTL8366S_TABLE_VLAN_WRITE_CTRL 0x0F01
#define RTL8366S_VLAN_MC_BASE(_x) (0x0016 + (_x) * 2)
#define RTL8366S_VLAN_MEMBERINGRESS_REG 0x0379
#define RTL8366S_PORT_LINK_STATUS_BASE 0x0060
#define RTL8366S_PORT_STATUS_SPEED_MASK 0x0003
#define RTL8366S_PORT_STATUS_DUPLEX_MASK 0x0004
#define RTL8366S_PORT_STATUS_LINK_MASK 0x0010
#define RTL8366S_PORT_STATUS_TXPAUSE_MASK 0x0020
#define RTL8366S_PORT_STATUS_RXPAUSE_MASK 0x0040
#define RTL8366S_PORT_STATUS_AN_MASK 0x0080
#define RTL8366S_PORT_NUM_CPU 5
#define RTL8366S_NUM_PORTS 6
#define RTL8366S_NUM_VLANS 16
#define RTL8366S_NUM_LEDGROUPS 4
#define RTL8366S_NUM_VIDS 4096
#define RTL8366S_PRIORITYMAX 7
#define RTL8366S_FIDMAX 7
#define RTL8366S_PORT_1 (1 << 0) /* In userspace port 0 */
#define RTL8366S_PORT_2 (1 << 1) /* In userspace port 1 */
#define RTL8366S_PORT_3 (1 << 2) /* In userspace port 2 */
#define RTL8366S_PORT_4 (1 << 3) /* In userspace port 3 */
#define RTL8366S_PORT_UNKNOWN (1 << 4) /* No known connection */
#define RTL8366S_PORT_CPU (1 << 5) /* CPU port */
#define RTL8366S_PORT_ALL (RTL8366S_PORT_1 | \
RTL8366S_PORT_2 | \
RTL8366S_PORT_3 | \
RTL8366S_PORT_4 | \
RTL8366S_PORT_UNKNOWN | \
RTL8366S_PORT_CPU)
#define RTL8366S_PORT_ALL_BUT_CPU (RTL8366S_PORT_1 | \
RTL8366S_PORT_2 | \
RTL8366S_PORT_3 | \
RTL8366S_PORT_4 | \
RTL8366S_PORT_UNKNOWN)
#define RTL8366S_PORT_ALL_EXTERNAL (RTL8366S_PORT_1 | \
RTL8366S_PORT_2 | \
RTL8366S_PORT_3 | \
RTL8366S_PORT_4)
#define RTL8366S_PORT_ALL_INTERNAL (RTL8366S_PORT_UNKNOWN | \
RTL8366S_PORT_CPU)
#define RTL8366S_VLAN_VID_MASK 0xfff
#define RTL8366S_VLAN_PRIORITY_SHIFT 12
#define RTL8366S_VLAN_PRIORITY_MASK 0x7
#define RTL8366S_VLAN_MEMBER_MASK 0x3f
#define RTL8366S_VLAN_UNTAG_SHIFT 6
#define RTL8366S_VLAN_UNTAG_MASK 0x3f
#define RTL8366S_VLAN_FID_SHIFT 12
#define RTL8366S_VLAN_FID_MASK 0x7
#define RTL8366S_MIB_RXB_ID 0 /* IfInOctets */
#define RTL8366S_MIB_TXB_ID 20 /* IfOutOctets */
static struct rtl8366_mib_counter rtl8366s_mib_counters[] = {
{ 0, 0, 4, "IfInOctets" },
{ 0, 4, 4, "EtherStatsOctets" },
{ 0, 8, 2, "EtherStatsUnderSizePkts" },
{ 0, 10, 2, "EtherFragments" },
{ 0, 12, 2, "EtherStatsPkts64Octets" },
{ 0, 14, 2, "EtherStatsPkts65to127Octets" },
{ 0, 16, 2, "EtherStatsPkts128to255Octets" },
{ 0, 18, 2, "EtherStatsPkts256to511Octets" },
{ 0, 20, 2, "EtherStatsPkts512to1023Octets" },
{ 0, 22, 2, "EtherStatsPkts1024to1518Octets" },
{ 0, 24, 2, "EtherOversizeStats" },
{ 0, 26, 2, "EtherStatsJabbers" },
{ 0, 28, 2, "IfInUcastPkts" },
{ 0, 30, 2, "EtherStatsMulticastPkts" },
{ 0, 32, 2, "EtherStatsBroadcastPkts" },
{ 0, 34, 2, "EtherStatsDropEvents" },
{ 0, 36, 2, "Dot3StatsFCSErrors" },
{ 0, 38, 2, "Dot3StatsSymbolErrors" },
{ 0, 40, 2, "Dot3InPauseFrames" },
{ 0, 42, 2, "Dot3ControlInUnknownOpcodes" },
{ 0, 44, 4, "IfOutOctets" },
{ 0, 48, 2, "Dot3StatsSingleCollisionFrames" },
{ 0, 50, 2, "Dot3StatMultipleCollisionFrames" },
{ 0, 52, 2, "Dot3sDeferredTransmissions" },
{ 0, 54, 2, "Dot3StatsLateCollisions" },
{ 0, 56, 2, "EtherStatsCollisions" },
{ 0, 58, 2, "Dot3StatsExcessiveCollisions" },
{ 0, 60, 2, "Dot3OutPauseFrames" },
{ 0, 62, 2, "Dot1dBasePortDelayExceededDiscards" },
/*
* The following counters are accessible at a different
* base address.
*/
{ 1, 0, 2, "Dot1dTpPortInDiscards" },
{ 1, 2, 2, "IfOutUcastPkts" },
{ 1, 4, 2, "IfOutMulticastPkts" },
{ 1, 6, 2, "IfOutBroadcastPkts" },
};
#define REG_WR(_smi, _reg, _val) \
do { \
err = rtl8366_smi_write_reg(_smi, _reg, _val); \
if (err) \
return err; \
} while (0)
#define REG_RMW(_smi, _reg, _mask, _val) \
do { \
err = rtl8366_smi_rmwr(_smi, _reg, _mask, _val); \
if (err) \
return err; \
} while (0)
static int rtl8366s_reset_chip(struct rtl8366_smi *smi)
{
int timeout = 10;
u32 data;
rtl8366_smi_write_reg_noack(smi, RTL8366S_RESET_CTRL_REG,
RTL8366S_CHIP_CTRL_RESET_HW);
do {
msleep(1);
if (rtl8366_smi_read_reg(smi, RTL8366S_RESET_CTRL_REG, &data))
return -EIO;
if (!(data & RTL8366S_CHIP_CTRL_RESET_HW))
break;
} while (--timeout);
if (!timeout) {
printk("Timeout waiting for the switch to reset\n");
return -EIO;
}
return 0;
}
static int rtl8366s_read_phy_reg(struct rtl8366_smi *smi,
u32 phy_no, u32 page, u32 addr, u32 *data)
{
u32 reg;
int ret;
if (phy_no > RTL8366S_PHY_NO_MAX)
return -EINVAL;
if (page > RTL8366S_PHY_PAGE_MAX)
return -EINVAL;
if (addr > RTL8366S_PHY_ADDR_MAX)
return -EINVAL;
ret = rtl8366_smi_write_reg(smi, RTL8366S_PHY_ACCESS_CTRL_REG,
RTL8366S_PHY_CTRL_READ);
if (ret)
return ret;
reg = 0x8000 | (1 << (phy_no + RTL8366S_PHY_NO_OFFSET)) |
((page << RTL8366S_PHY_PAGE_OFFSET) & RTL8366S_PHY_PAGE_MASK) |
(addr & RTL8366S_PHY_REG_MASK);
ret = rtl8366_smi_write_reg(smi, reg, 0);
if (ret)
return ret;
ret = rtl8366_smi_read_reg(smi, RTL8366S_PHY_ACCESS_DATA_REG, data);
if (ret)
return ret;
return 0;
}
static int rtl8366s_write_phy_reg(struct rtl8366_smi *smi,
u32 phy_no, u32 page, u32 addr, u32 data)
{
u32 reg;
int ret;
if (phy_no > RTL8366S_PHY_NO_MAX)
return -EINVAL;
if (page > RTL8366S_PHY_PAGE_MAX)
return -EINVAL;
if (addr > RTL8366S_PHY_ADDR_MAX)
return -EINVAL;
ret = rtl8366_smi_write_reg(smi, RTL8366S_PHY_ACCESS_CTRL_REG,
RTL8366S_PHY_CTRL_WRITE);
if (ret)
return ret;
reg = 0x8000 | (1 << (phy_no + RTL8366S_PHY_NO_OFFSET)) |
((page << RTL8366S_PHY_PAGE_OFFSET) & RTL8366S_PHY_PAGE_MASK) |
(addr & RTL8366S_PHY_REG_MASK);
ret = rtl8366_smi_write_reg(smi, reg, data);
if (ret)
return ret;
return 0;
}
static int rtl8366s_set_green_port(struct rtl8366_smi *smi, int port, int enable)
{
int err;
u32 phyData;
if (port >= RTL8366S_NUM_PORTS)
return -EINVAL;
err = rtl8366s_read_phy_reg(smi, port, 0, RTL8366S_PHY_POWER_SAVING_CTRL_REG, &phyData);
if (err)
return err;
if (enable)
phyData |= RTL8366S_PHY_POWER_SAVING_MASK;
else
phyData &= ~RTL8366S_PHY_POWER_SAVING_MASK;
err = rtl8366s_write_phy_reg(smi, port, 0, RTL8366S_PHY_POWER_SAVING_CTRL_REG, phyData);
if (err)
return err;
return 0;
}
static int rtl8366s_set_green(struct rtl8366_smi *smi, int enable)
{
int err;
unsigned i;
u32 data = 0;
if (!enable) {
for (i = 0; i <= RTL8366S_PHY_NO_MAX; i++) {
rtl8366s_set_green_port(smi, i, 0);
}
}
if (enable)
data = (RTL8366S_GREEN_ETHERNET_TX_BIT | RTL8366S_GREEN_ETHERNET_RX_BIT);
REG_RMW(smi, RTL8366S_GREEN_ETHERNET_CTRL_REG, RTL8366S_GREEN_ETHERNET_CTRL_MASK, data);
return 0;
}
static int rtl8366s_setup(struct rtl8366_smi *smi)
{
struct rtl8366_platform_data *pdata;
int err;
unsigned i;
#ifdef CONFIG_OF
struct device_node *np;
unsigned num_initvals;
const __be32 *paddr;
#endif
pdata = smi->parent->platform_data;
if (pdata && pdata->num_initvals && pdata->initvals) {
dev_info(smi->parent, "applying initvals\n");
for (i = 0; i < pdata->num_initvals; i++)
REG_WR(smi, pdata->initvals[i].reg,
pdata->initvals[i].val);
}
#ifdef CONFIG_OF
np = smi->parent->of_node;
paddr = of_get_property(np, "realtek,initvals", &num_initvals);
if (paddr) {
dev_info(smi->parent, "applying initvals from DTS\n");
if (num_initvals < (2 * sizeof(*paddr)))
return -EINVAL;
num_initvals /= sizeof(*paddr);
for (i = 0; i < num_initvals - 1; i += 2) {
u32 reg = be32_to_cpup(paddr + i);
u32 val = be32_to_cpup(paddr + i + 1);
REG_WR(smi, reg, val);
}
}
if (of_property_read_bool(np, "realtek,green-ethernet-features")) {
dev_info(smi->parent, "activating Green Ethernet features\n");
err = rtl8366s_set_green(smi, 1);
if (err)
return err;
for (i = 0; i <= RTL8366S_PHY_NO_MAX; i++) {
err = rtl8366s_set_green_port(smi, i, 1);
if (err)
return err;
}
}
#endif
/* set maximum packet length to 1536 bytes */
REG_RMW(smi, RTL8366S_SGCR, RTL8366S_SGCR_MAX_LENGTH_MASK,
RTL8366S_SGCR_MAX_LENGTH_1536);
/* enable learning for all ports */
REG_WR(smi, RTL8366S_SSCR0, 0);
/* enable auto ageing for all ports */
REG_WR(smi, RTL8366S_SSCR1, 0);
/*
* discard VLAN tagged packets if the port is not a member of
* the VLAN with which the packets is associated.
*/
REG_WR(smi, RTL8366S_VLAN_MEMBERINGRESS_REG, RTL8366S_PORT_ALL);
/* don't drop packets whose DA has not been learned */
REG_RMW(smi, RTL8366S_SSCR2, RTL8366S_SSCR2_DROP_UNKNOWN_DA, 0);
return 0;
}
static int rtl8366_get_mib_counter(struct rtl8366_smi *smi, int counter,
int port, unsigned long long *val)
{
int i;
int err;
u32 addr, data;
u64 mibvalue;
if (port > RTL8366S_NUM_PORTS || counter >= RTL8366S_MIB_COUNT)
return -EINVAL;
switch (rtl8366s_mib_counters[counter].base) {
case 0:
addr = RTL8366S_MIB_COUNTER_BASE +
RTL8366S_MIB_COUNTER_PORT_OFFSET * port;
break;
case 1:
addr = RTL8366S_MIB_COUNTER_BASE2 +
RTL8366S_MIB_COUNTER_PORT_OFFSET2 * port;
break;
default:
return -EINVAL;
}
addr += rtl8366s_mib_counters[counter].offset;
/*
* Writing access counter address first
* then ASIC will prepare 64bits counter wait for being retrived
*/
data = 0; /* writing data will be discard by ASIC */
err = rtl8366_smi_write_reg(smi, addr, data);
if (err)
return err;
/* read MIB control register */
err = rtl8366_smi_read_reg(smi, RTL8366S_MIB_CTRL_REG, &data);
if (err)
return err;
if (data & RTL8366S_MIB_CTRL_BUSY_MASK)
return -EBUSY;
if (data & RTL8366S_MIB_CTRL_RESET_MASK)
return -EIO;
mibvalue = 0;
for (i = rtl8366s_mib_counters[counter].length; i > 0; i--) {
err = rtl8366_smi_read_reg(smi, addr + (i - 1), &data);
if (err)
return err;
mibvalue = (mibvalue << 16) | (data & 0xFFFF);
}
*val = mibvalue;
return 0;
}
static int rtl8366s_get_vlan_4k(struct rtl8366_smi *smi, u32 vid,
struct rtl8366_vlan_4k *vlan4k)
{
u32 data[2];
int err;
int i;
memset(vlan4k, '\0', sizeof(struct rtl8366_vlan_4k));
if (vid >= RTL8366S_NUM_VIDS)
return -EINVAL;
/* write VID */
err = rtl8366_smi_write_reg(smi, RTL8366S_VLAN_TABLE_WRITE_BASE,
vid & RTL8366S_VLAN_VID_MASK);
if (err)
return err;
/* write table access control word */
err = rtl8366_smi_write_reg(smi, RTL8366S_TABLE_ACCESS_CTRL_REG,
RTL8366S_TABLE_VLAN_READ_CTRL);
if (err)
return err;
for (i = 0; i < 2; i++) {
err = rtl8366_smi_read_reg(smi,
RTL8366S_VLAN_TABLE_READ_BASE + i,
&data[i]);
if (err)
return err;
}
vlan4k->vid = vid;
vlan4k->untag = (data[1] >> RTL8366S_VLAN_UNTAG_SHIFT) &
RTL8366S_VLAN_UNTAG_MASK;
vlan4k->member = data[1] & RTL8366S_VLAN_MEMBER_MASK;
vlan4k->fid = (data[1] >> RTL8366S_VLAN_FID_SHIFT) &
RTL8366S_VLAN_FID_MASK;
return 0;
}
static int rtl8366s_set_vlan_4k(struct rtl8366_smi *smi,
const struct rtl8366_vlan_4k *vlan4k)
{
u32 data[2];
int err;
int i;
if (vlan4k->vid >= RTL8366S_NUM_VIDS ||
vlan4k->member > RTL8366S_VLAN_MEMBER_MASK ||
vlan4k->untag > RTL8366S_VLAN_UNTAG_MASK ||
vlan4k->fid > RTL8366S_FIDMAX)
return -EINVAL;
data[0] = vlan4k->vid & RTL8366S_VLAN_VID_MASK;
data[1] = (vlan4k->member & RTL8366S_VLAN_MEMBER_MASK) |
((vlan4k->untag & RTL8366S_VLAN_UNTAG_MASK) <<
RTL8366S_VLAN_UNTAG_SHIFT) |
((vlan4k->fid & RTL8366S_VLAN_FID_MASK) <<
RTL8366S_VLAN_FID_SHIFT);
for (i = 0; i < 2; i++) {
err = rtl8366_smi_write_reg(smi,
RTL8366S_VLAN_TABLE_WRITE_BASE + i,
data[i]);
if (err)
return err;
}
/* write table access control word */
err = rtl8366_smi_write_reg(smi, RTL8366S_TABLE_ACCESS_CTRL_REG,
RTL8366S_TABLE_VLAN_WRITE_CTRL);
return err;
}
static int rtl8366s_get_vlan_mc(struct rtl8366_smi *smi, u32 index,
struct rtl8366_vlan_mc *vlanmc)
{
u32 data[2];
int err;
int i;
memset(vlanmc, '\0', sizeof(struct rtl8366_vlan_mc));
if (index >= RTL8366S_NUM_VLANS)
return -EINVAL;
for (i = 0; i < 2; i++) {
err = rtl8366_smi_read_reg(smi,
RTL8366S_VLAN_MC_BASE(index) + i,
&data[i]);
if (err)
return err;
}
vlanmc->vid = data[0] & RTL8366S_VLAN_VID_MASK;
vlanmc->priority = (data[0] >> RTL8366S_VLAN_PRIORITY_SHIFT) &
RTL8366S_VLAN_PRIORITY_MASK;
vlanmc->untag = (data[1] >> RTL8366S_VLAN_UNTAG_SHIFT) &
RTL8366S_VLAN_UNTAG_MASK;
vlanmc->member = data[1] & RTL8366S_VLAN_MEMBER_MASK;
vlanmc->fid = (data[1] >> RTL8366S_VLAN_FID_SHIFT) &
RTL8366S_VLAN_FID_MASK;
return 0;
}
static int rtl8366s_set_vlan_mc(struct rtl8366_smi *smi, u32 index,
const struct rtl8366_vlan_mc *vlanmc)
{
u32 data[2];
int err;
int i;
if (index >= RTL8366S_NUM_VLANS ||
vlanmc->vid >= RTL8366S_NUM_VIDS ||
vlanmc->priority > RTL8366S_PRIORITYMAX ||
vlanmc->member > RTL8366S_VLAN_MEMBER_MASK ||
vlanmc->untag > RTL8366S_VLAN_UNTAG_MASK ||
vlanmc->fid > RTL8366S_FIDMAX)
return -EINVAL;
data[0] = (vlanmc->vid & RTL8366S_VLAN_VID_MASK) |
((vlanmc->priority & RTL8366S_VLAN_PRIORITY_MASK) <<
RTL8366S_VLAN_PRIORITY_SHIFT);
data[1] = (vlanmc->member & RTL8366S_VLAN_MEMBER_MASK) |
((vlanmc->untag & RTL8366S_VLAN_UNTAG_MASK) <<
RTL8366S_VLAN_UNTAG_SHIFT) |
((vlanmc->fid & RTL8366S_VLAN_FID_MASK) <<
RTL8366S_VLAN_FID_SHIFT);
for (i = 0; i < 2; i++) {
err = rtl8366_smi_write_reg(smi,
RTL8366S_VLAN_MC_BASE(index) + i,
data[i]);
if (err)
return err;
}
return 0;
}
static int rtl8366s_get_mc_index(struct rtl8366_smi *smi, int port, int *val)
{
u32 data;
int err;
if (port >= RTL8366S_NUM_PORTS)
return -EINVAL;
err = rtl8366_smi_read_reg(smi, RTL8366S_PORT_VLAN_CTRL_REG(port),
&data);
if (err)
return err;
*val = (data >> RTL8366S_PORT_VLAN_CTRL_SHIFT(port)) &
RTL8366S_PORT_VLAN_CTRL_MASK;
return 0;
}
static int rtl8366s_set_mc_index(struct rtl8366_smi *smi, int port, int index)
{
if (port >= RTL8366S_NUM_PORTS || index >= RTL8366S_NUM_VLANS)
return -EINVAL;
return rtl8366_smi_rmwr(smi, RTL8366S_PORT_VLAN_CTRL_REG(port),
RTL8366S_PORT_VLAN_CTRL_MASK <<
RTL8366S_PORT_VLAN_CTRL_SHIFT(port),
(index & RTL8366S_PORT_VLAN_CTRL_MASK) <<
RTL8366S_PORT_VLAN_CTRL_SHIFT(port));
}
static int rtl8366s_enable_vlan(struct rtl8366_smi *smi, int enable)
{
return rtl8366_smi_rmwr(smi, RTL8366S_SGCR, RTL8366S_SGCR_EN_VLAN,
(enable) ? RTL8366S_SGCR_EN_VLAN : 0);
}
static int rtl8366s_enable_vlan4k(struct rtl8366_smi *smi, int enable)
{
return rtl8366_smi_rmwr(smi, RTL8366S_VLAN_TB_CTRL_REG,
1, (enable) ? 1 : 0);
}
static int rtl8366s_is_vlan_valid(struct rtl8366_smi *smi, unsigned vlan)
{
unsigned max = RTL8366S_NUM_VLANS;
if (smi->vlan4k_enabled)
max = RTL8366S_NUM_VIDS - 1;
if (vlan == 0 || vlan >= max)
return 0;
return 1;
}
static int rtl8366s_enable_port(struct rtl8366_smi *smi, int port, int enable)
{
return rtl8366_smi_rmwr(smi, RTL8366S_PECR, (1 << port),
(enable) ? 0 : (1 << port));
}
static int rtl8366s_sw_reset_mibs(struct switch_dev *dev,
const struct switch_attr *attr,
struct switch_val *val)
{
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
return rtl8366_smi_rmwr(smi, RTL8366S_MIB_CTRL_REG, 0, (1 << 2));
}
static int rtl8366s_sw_get_blinkrate(struct switch_dev *dev,
const struct switch_attr *attr,
struct switch_val *val)
{
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
u32 data;
rtl8366_smi_read_reg(smi, RTL8366S_LED_BLINKRATE_REG, &data);
val->value.i = (data & (RTL8366S_LED_BLINKRATE_MASK));
return 0;
}
static int rtl8366s_sw_set_blinkrate(struct switch_dev *dev,
const struct switch_attr *attr,
struct switch_val *val)
{
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
if (val->value.i >= 6)
return -EINVAL;
return rtl8366_smi_rmwr(smi, RTL8366S_LED_BLINKRATE_REG,
RTL8366S_LED_BLINKRATE_MASK,
val->value.i);
}
static int rtl8366s_sw_get_max_length(struct switch_dev *dev,
const struct switch_attr *attr,
struct switch_val *val)
{
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
u32 data;
rtl8366_smi_read_reg(smi, RTL8366S_SGCR, &data);
val->value.i = ((data & (RTL8366S_SGCR_MAX_LENGTH_MASK)) >> 4);
return 0;
}
static int rtl8366s_sw_set_max_length(struct switch_dev *dev,
const struct switch_attr *attr,
struct switch_val *val)
{
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
char length_code;
switch (val->value.i) {
case 0:
length_code = RTL8366S_SGCR_MAX_LENGTH_1522;
break;
case 1:
length_code = RTL8366S_SGCR_MAX_LENGTH_1536;
break;
case 2:
length_code = RTL8366S_SGCR_MAX_LENGTH_1552;
break;
case 3:
length_code = RTL8366S_SGCR_MAX_LENGTH_16000;
break;
default:
return -EINVAL;
}
return rtl8366_smi_rmwr(smi, RTL8366S_SGCR,
RTL8366S_SGCR_MAX_LENGTH_MASK,
length_code);
}
static int rtl8366s_sw_get_learning_enable(struct switch_dev *dev,
const struct switch_attr *attr,
struct switch_val *val)
{
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
u32 data;
rtl8366_smi_read_reg(smi,RTL8366S_SSCR0, &data);
val->value.i = !data;
return 0;
}
static int rtl8366s_sw_set_learning_enable(struct switch_dev *dev,
const struct switch_attr *attr,
struct switch_val *val)
{
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
u32 portmask = 0;
int err = 0;
if (!val->value.i)
portmask = RTL8366S_PORT_ALL;
/* set learning for all ports */
REG_WR(smi, RTL8366S_SSCR0, portmask);
/* set auto ageing for all ports */
REG_WR(smi, RTL8366S_SSCR1, portmask);
return 0;
}
static int rtl8366s_sw_get_green(struct switch_dev *dev,
const struct switch_attr *attr,
struct switch_val *val)
{
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
u32 data;
int err;
err = rtl8366_smi_read_reg(smi, RTL8366S_GREEN_ETHERNET_CTRL_REG, &data);
if (err)
return err;
val->value.i = ((data & (RTL8366S_GREEN_ETHERNET_TX_BIT | RTL8366S_GREEN_ETHERNET_RX_BIT)) != 0) ? 1 : 0;
return 0;
}
static int rtl8366s_sw_set_green(struct switch_dev *dev,
const struct switch_attr *attr,
struct switch_val *val)
{
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
return rtl8366s_set_green(smi, val->value.i);
}
static int rtl8366s_sw_get_port_link(struct switch_dev *dev,
int port,
struct switch_port_link *link)
{
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
u32 data = 0;
u32 speed;
if (port >= RTL8366S_NUM_PORTS)
return -EINVAL;
rtl8366_smi_read_reg(smi, RTL8366S_PORT_LINK_STATUS_BASE + (port / 2),
&data);
if (port % 2)
data = data >> 8;
link->link = !!(data & RTL8366S_PORT_STATUS_LINK_MASK);
if (!link->link)
return 0;
link->duplex = !!(data & RTL8366S_PORT_STATUS_DUPLEX_MASK);
link->rx_flow = !!(data & RTL8366S_PORT_STATUS_RXPAUSE_MASK);
link->tx_flow = !!(data & RTL8366S_PORT_STATUS_TXPAUSE_MASK);
link->aneg = !!(data & RTL8366S_PORT_STATUS_AN_MASK);
speed = (data & RTL8366S_PORT_STATUS_SPEED_MASK);
switch (speed) {
case 0:
link->speed = SWITCH_PORT_SPEED_10;
break;
case 1:
link->speed = SWITCH_PORT_SPEED_100;
break;
case 2:
link->speed = SWITCH_PORT_SPEED_1000;
break;
default:
link->speed = SWITCH_PORT_SPEED_UNKNOWN;
break;
}
return 0;
}
static int rtl8366s_sw_set_port_led(struct switch_dev *dev,
const struct switch_attr *attr,
struct switch_val *val)
{
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
u32 data;
u32 mask;
u32 reg;
if (val->port_vlan >= RTL8366S_NUM_PORTS ||
(1 << val->port_vlan) == RTL8366S_PORT_UNKNOWN)
return -EINVAL;
if (val->port_vlan == RTL8366S_PORT_NUM_CPU) {
reg = RTL8366S_LED_BLINKRATE_REG;
mask = 0xF << 4;
data = val->value.i << 4;
} else {
reg = RTL8366S_LED_CTRL_REG;
mask = 0xF << (val->port_vlan * 4),
data = val->value.i << (val->port_vlan * 4);
}
return rtl8366_smi_rmwr(smi, reg, mask, data);
}
static int rtl8366s_sw_get_port_led(struct switch_dev *dev,
const struct switch_attr *attr,
struct switch_val *val)
{
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
u32 data = 0;
if (val->port_vlan >= RTL8366S_NUM_LEDGROUPS)
return -EINVAL;
rtl8366_smi_read_reg(smi, RTL8366S_LED_CTRL_REG, &data);
val->value.i = (data >> (val->port_vlan * 4)) & 0x000F;
return 0;
}
static int rtl8366s_sw_get_green_port(struct switch_dev *dev,
const struct switch_attr *attr,
struct switch_val *val)
{
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
int err;
u32 phyData;
if (val->port_vlan >= RTL8366S_NUM_PORTS)
return -EINVAL;
err = rtl8366s_read_phy_reg(smi, val->port_vlan, 0, RTL8366S_PHY_POWER_SAVING_CTRL_REG, &phyData);
if (err)
return err;
val->value.i = ((phyData & RTL8366S_PHY_POWER_SAVING_MASK) != 0) ? 1 : 0;
return 0;
}
static int rtl8366s_sw_set_green_port(struct switch_dev *dev,
const struct switch_attr *attr,
struct switch_val *val)
{
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
return rtl8366s_set_green_port(smi, val->port_vlan, val->value.i);
}
static int rtl8366s_sw_reset_port_mibs(struct switch_dev *dev,
const struct switch_attr *attr,
struct switch_val *val)
{
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
if (val->port_vlan >= RTL8366S_NUM_PORTS)
return -EINVAL;
return rtl8366_smi_rmwr(smi, RTL8366S_MIB_CTRL_REG,
0, (1 << (val->port_vlan + 3)));
}
static int rtl8366s_sw_get_port_stats(struct switch_dev *dev, int port,
struct switch_port_stats *stats)
{
return (rtl8366_sw_get_port_stats(dev, port, stats,
RTL8366S_MIB_TXB_ID, RTL8366S_MIB_RXB_ID));
}
static struct switch_attr rtl8366s_globals[] = {
{
.type = SWITCH_TYPE_INT,
.name = "enable_learning",
.description = "Enable learning, enable aging",
.set = rtl8366s_sw_set_learning_enable,
.get = rtl8366s_sw_get_learning_enable,
.max = 1,
}, {
.type = SWITCH_TYPE_INT,
.name = "enable_vlan",
.description = "Enable VLAN mode",
.set = rtl8366_sw_set_vlan_enable,
.get = rtl8366_sw_get_vlan_enable,
.max = 1,
.ofs = 1
}, {
.type = SWITCH_TYPE_INT,
.name = "enable_vlan4k",
.description = "Enable VLAN 4K mode",
.set = rtl8366_sw_set_vlan_enable,
.get = rtl8366_sw_get_vlan_enable,
.max = 1,
.ofs = 2
}, {
.type = SWITCH_TYPE_NOVAL,
.name = "reset_mibs",
.description = "Reset all MIB counters",
.set = rtl8366s_sw_reset_mibs,
}, {
.type = SWITCH_TYPE_INT,
.name = "blinkrate",
.description = "Get/Set LED blinking rate (0 = 43ms, 1 = 84ms,"
" 2 = 120ms, 3 = 170ms, 4 = 340ms, 5 = 670ms)",
.set = rtl8366s_sw_set_blinkrate,
.get = rtl8366s_sw_get_blinkrate,
.max = 5
}, {
.type = SWITCH_TYPE_INT,
.name = "max_length",
.description = "Get/Set the maximum length of valid packets"
" (0 = 1522, 1 = 1536, 2 = 1552, 3 = 16000 (9216?))",
.set = rtl8366s_sw_set_max_length,
.get = rtl8366s_sw_get_max_length,
.max = 3,
}, {
.type = SWITCH_TYPE_INT,
.name = "green_mode",
.description = "Get/Set the router green feature",
.set = rtl8366s_sw_set_green,
.get = rtl8366s_sw_get_green,
.max = 1,
},
};
static struct switch_attr rtl8366s_port[] = {
{
.type = SWITCH_TYPE_NOVAL,
.name = "reset_mib",
.description = "Reset single port MIB counters",
.set = rtl8366s_sw_reset_port_mibs,
}, {
.type = SWITCH_TYPE_STRING,
.name = "mib",
.description = "Get MIB counters for port",
.max = 33,
.set = NULL,
.get = rtl8366_sw_get_port_mib,
}, {
.type = SWITCH_TYPE_INT,
.name = "led",
.description = "Get/Set port group (0 - 3) led mode (0 - 15)",
.max = 15,
.set = rtl8366s_sw_set_port_led,
.get = rtl8366s_sw_get_port_led,
}, {
.type = SWITCH_TYPE_INT,
.name = "green_port",
.description = "Get/Set port green feature (0 - 1)",
.max = 1,
.set = rtl8366s_sw_set_green_port,
.get = rtl8366s_sw_get_green_port,
},
};
static struct switch_attr rtl8366s_vlan[] = {
{
.type = SWITCH_TYPE_STRING,
.name = "info",
.description = "Get vlan information",
.max = 1,
.set = NULL,
.get = rtl8366_sw_get_vlan_info,
}, {
.type = SWITCH_TYPE_INT,
.name = "fid",
.description = "Get/Set vlan FID",
.max = RTL8366S_FIDMAX,
.set = rtl8366_sw_set_vlan_fid,
.get = rtl8366_sw_get_vlan_fid,
},
};
static const struct switch_dev_ops rtl8366_ops = {
.attr_global = {
.attr = rtl8366s_globals,
.n_attr = ARRAY_SIZE(rtl8366s_globals),
},
.attr_port = {
.attr = rtl8366s_port,
.n_attr = ARRAY_SIZE(rtl8366s_port),
},
.attr_vlan = {
.attr = rtl8366s_vlan,
.n_attr = ARRAY_SIZE(rtl8366s_vlan),
},
.get_vlan_ports = rtl8366_sw_get_vlan_ports,
.set_vlan_ports = rtl8366_sw_set_vlan_ports,
.get_port_pvid = rtl8366_sw_get_port_pvid,
.set_port_pvid = rtl8366_sw_set_port_pvid,
.reset_switch = rtl8366_sw_reset_switch,
.get_port_link = rtl8366s_sw_get_port_link,
.get_port_stats = rtl8366s_sw_get_port_stats,
};
static int rtl8366s_switch_init(struct rtl8366_smi *smi)
{
struct switch_dev *dev = &smi->sw_dev;
int err;
dev->name = "RTL8366S";
dev->cpu_port = RTL8366S_PORT_NUM_CPU;
dev->ports = RTL8366S_NUM_PORTS;
dev->vlans = RTL8366S_NUM_VIDS;
dev->ops = &rtl8366_ops;
dev->alias = dev_name(smi->parent);
err = register_switch(dev, NULL);
if (err)
dev_err(smi->parent, "switch registration failed\n");
return err;
}
static void rtl8366s_switch_cleanup(struct rtl8366_smi *smi)
{
unregister_switch(&smi->sw_dev);
}
static int rtl8366s_mii_read(struct mii_bus *bus, int addr, int reg)
{
struct rtl8366_smi *smi = bus->priv;
u32 val = 0;
int err;
err = rtl8366s_read_phy_reg(smi, addr, 0, reg, &val);
if (err)
return 0xffff;
return val;
}
static int rtl8366s_mii_write(struct mii_bus *bus, int addr, int reg, u16 val)
{
struct rtl8366_smi *smi = bus->priv;
u32 t;
int err;
err = rtl8366s_write_phy_reg(smi, addr, 0, reg, val);
/* flush write */
(void) rtl8366s_read_phy_reg(smi, addr, 0, reg, &t);
return err;
}
static int rtl8366s_detect(struct rtl8366_smi *smi)
{
u32 chip_id = 0;
u32 chip_ver = 0;
int ret;
ret = rtl8366_smi_read_reg(smi, RTL8366S_CHIP_ID_REG, &chip_id);
if (ret) {
dev_err(smi->parent, "unable to read chip id\n");
return ret;
}
switch (chip_id) {
case RTL8366S_CHIP_ID_8366:
break;
default:
dev_err(smi->parent, "unknown chip id (%04x)\n", chip_id);
return -ENODEV;
}
ret = rtl8366_smi_read_reg(smi, RTL8366S_CHIP_VERSION_CTRL_REG,
&chip_ver);
if (ret) {
dev_err(smi->parent, "unable to read chip version\n");
return ret;
}
dev_info(smi->parent, "RTL%04x ver. %u chip found\n",
chip_id, chip_ver & RTL8366S_CHIP_VERSION_MASK);
return 0;
}
static struct rtl8366_smi_ops rtl8366s_smi_ops = {
.detect = rtl8366s_detect,
.reset_chip = rtl8366s_reset_chip,
.setup = rtl8366s_setup,
.mii_read = rtl8366s_mii_read,
.mii_write = rtl8366s_mii_write,
.get_vlan_mc = rtl8366s_get_vlan_mc,
.set_vlan_mc = rtl8366s_set_vlan_mc,
.get_vlan_4k = rtl8366s_get_vlan_4k,
.set_vlan_4k = rtl8366s_set_vlan_4k,
.get_mc_index = rtl8366s_get_mc_index,
.set_mc_index = rtl8366s_set_mc_index,
.get_mib_counter = rtl8366_get_mib_counter,
.is_vlan_valid = rtl8366s_is_vlan_valid,
.enable_vlan = rtl8366s_enable_vlan,
.enable_vlan4k = rtl8366s_enable_vlan4k,
.enable_port = rtl8366s_enable_port,
};
static int rtl8366s_probe(struct platform_device *pdev)
{
static int rtl8366_smi_version_printed;
struct rtl8366_smi *smi;
int err;
if (!rtl8366_smi_version_printed++)
printk(KERN_NOTICE RTL8366S_DRIVER_DESC
" version " RTL8366S_DRIVER_VER"\n");
smi = rtl8366_smi_probe(pdev);
if (IS_ERR(smi))
return PTR_ERR(smi);
smi->clk_delay = 10;
smi->cmd_read = 0xa9;
smi->cmd_write = 0xa8;
smi->ops = &rtl8366s_smi_ops;
smi->cpu_port = RTL8366S_PORT_NUM_CPU;
smi->num_ports = RTL8366S_NUM_PORTS;
smi->num_vlan_mc = RTL8366S_NUM_VLANS;
smi->mib_counters = rtl8366s_mib_counters;
smi->num_mib_counters = ARRAY_SIZE(rtl8366s_mib_counters);
err = rtl8366_smi_init(smi);
if (err)
goto err_free_smi;
platform_set_drvdata(pdev, smi);
err = rtl8366s_switch_init(smi);
if (err)
goto err_clear_drvdata;
return 0;
err_clear_drvdata:
platform_set_drvdata(pdev, NULL);
rtl8366_smi_cleanup(smi);
err_free_smi:
kfree(smi);
return err;
}
static int rtl8366s_remove(struct platform_device *pdev)
{
struct rtl8366_smi *smi = platform_get_drvdata(pdev);
if (smi) {
rtl8366s_switch_cleanup(smi);
platform_set_drvdata(pdev, NULL);
rtl8366_smi_cleanup(smi);
kfree(smi);
}
return 0;
}
#ifdef CONFIG_OF
static const struct of_device_id rtl8366s_match[] = {
{ .compatible = "realtek,rtl8366s" },
{},
};
MODULE_DEVICE_TABLE(of, rtl8366s_match);
#endif
static struct platform_driver rtl8366s_driver = {
.driver = {
.name = RTL8366S_DRIVER_NAME,
.owner = THIS_MODULE,
#ifdef CONFIG_OF
.of_match_table = of_match_ptr(rtl8366s_match),
#endif
},
.probe = rtl8366s_probe,
.remove = rtl8366s_remove,
};
static int __init rtl8366s_module_init(void)
{
return platform_driver_register(&rtl8366s_driver);
}
module_init(rtl8366s_module_init);
static void __exit rtl8366s_module_exit(void)
{
platform_driver_unregister(&rtl8366s_driver);
}
module_exit(rtl8366s_module_exit);
MODULE_DESCRIPTION(RTL8366S_DRIVER_DESC);
MODULE_VERSION(RTL8366S_DRIVER_VER);
MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
MODULE_AUTHOR("Antti Seppälä <a.seppala@gmail.com>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:" RTL8366S_DRIVER_NAME);
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