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linux_dsm_epyc7002/drivers/net/dsa/b53/b53_common.c
Florian Fainelli 51dca8a1cf net: dsa: b53: Fix statistics readings 
Due to a typo we would always be using the MIB counter width of the
first element of the counter array instead of the current element, and
we would always be accessing the register statistics with a 64-bits
read, while some could be 32-bits. This got unnoticed in testing with
MDIO and SRAB which tolerate doing this, but testing with the SPI bus
revealed bogus values being returned. Fix this by using the proper
iterator here.

Fixes: 967dd82ffc ("net: dsa: b53: Add support for Broadcom RoboSwitch")
Reported-by: Jonas Gorski <jogo@openwrt.org>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-23 15:13:48 -04:00

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/*
* B53 switch driver main logic
*
* Copyright (C) 2011-2013 Jonas Gorski <jogo@openwrt.org>
* Copyright (C) 2016 Florian Fainelli <f.fainelli@gmail.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/delay.h>
#include <linux/export.h>
#include <linux/gpio.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_data/b53.h>
#include <linux/phy.h>
#include <linux/etherdevice.h>
#include <linux/if_bridge.h>
#include <net/dsa.h>
#include <net/switchdev.h>
#include "b53_regs.h"
#include "b53_priv.h"
struct b53_mib_desc {
u8 size;
u8 offset;
const char *name;
};
/* BCM5365 MIB counters */
static const struct b53_mib_desc b53_mibs_65[] = {
{ 8, 0x00, "TxOctets" },
{ 4, 0x08, "TxDropPkts" },
{ 4, 0x10, "TxBroadcastPkts" },
{ 4, 0x14, "TxMulticastPkts" },
{ 4, 0x18, "TxUnicastPkts" },
{ 4, 0x1c, "TxCollisions" },
{ 4, 0x20, "TxSingleCollision" },
{ 4, 0x24, "TxMultipleCollision" },
{ 4, 0x28, "TxDeferredTransmit" },
{ 4, 0x2c, "TxLateCollision" },
{ 4, 0x30, "TxExcessiveCollision" },
{ 4, 0x38, "TxPausePkts" },
{ 8, 0x44, "RxOctets" },
{ 4, 0x4c, "RxUndersizePkts" },
{ 4, 0x50, "RxPausePkts" },
{ 4, 0x54, "Pkts64Octets" },
{ 4, 0x58, "Pkts65to127Octets" },
{ 4, 0x5c, "Pkts128to255Octets" },
{ 4, 0x60, "Pkts256to511Octets" },
{ 4, 0x64, "Pkts512to1023Octets" },
{ 4, 0x68, "Pkts1024to1522Octets" },
{ 4, 0x6c, "RxOversizePkts" },
{ 4, 0x70, "RxJabbers" },
{ 4, 0x74, "RxAlignmentErrors" },
{ 4, 0x78, "RxFCSErrors" },
{ 8, 0x7c, "RxGoodOctets" },
{ 4, 0x84, "RxDropPkts" },
{ 4, 0x88, "RxUnicastPkts" },
{ 4, 0x8c, "RxMulticastPkts" },
{ 4, 0x90, "RxBroadcastPkts" },
{ 4, 0x94, "RxSAChanges" },
{ 4, 0x98, "RxFragments" },
};
#define B53_MIBS_65_SIZE ARRAY_SIZE(b53_mibs_65)
/* BCM63xx MIB counters */
static const struct b53_mib_desc b53_mibs_63xx[] = {
{ 8, 0x00, "TxOctets" },
{ 4, 0x08, "TxDropPkts" },
{ 4, 0x0c, "TxQoSPkts" },
{ 4, 0x10, "TxBroadcastPkts" },
{ 4, 0x14, "TxMulticastPkts" },
{ 4, 0x18, "TxUnicastPkts" },
{ 4, 0x1c, "TxCollisions" },
{ 4, 0x20, "TxSingleCollision" },
{ 4, 0x24, "TxMultipleCollision" },
{ 4, 0x28, "TxDeferredTransmit" },
{ 4, 0x2c, "TxLateCollision" },
{ 4, 0x30, "TxExcessiveCollision" },
{ 4, 0x38, "TxPausePkts" },
{ 8, 0x3c, "TxQoSOctets" },
{ 8, 0x44, "RxOctets" },
{ 4, 0x4c, "RxUndersizePkts" },
{ 4, 0x50, "RxPausePkts" },
{ 4, 0x54, "Pkts64Octets" },
{ 4, 0x58, "Pkts65to127Octets" },
{ 4, 0x5c, "Pkts128to255Octets" },
{ 4, 0x60, "Pkts256to511Octets" },
{ 4, 0x64, "Pkts512to1023Octets" },
{ 4, 0x68, "Pkts1024to1522Octets" },
{ 4, 0x6c, "RxOversizePkts" },
{ 4, 0x70, "RxJabbers" },
{ 4, 0x74, "RxAlignmentErrors" },
{ 4, 0x78, "RxFCSErrors" },
{ 8, 0x7c, "RxGoodOctets" },
{ 4, 0x84, "RxDropPkts" },
{ 4, 0x88, "RxUnicastPkts" },
{ 4, 0x8c, "RxMulticastPkts" },
{ 4, 0x90, "RxBroadcastPkts" },
{ 4, 0x94, "RxSAChanges" },
{ 4, 0x98, "RxFragments" },
{ 4, 0xa0, "RxSymbolErrors" },
{ 4, 0xa4, "RxQoSPkts" },
{ 8, 0xa8, "RxQoSOctets" },
{ 4, 0xb0, "Pkts1523to2047Octets" },
{ 4, 0xb4, "Pkts2048to4095Octets" },
{ 4, 0xb8, "Pkts4096to8191Octets" },
{ 4, 0xbc, "Pkts8192to9728Octets" },
{ 4, 0xc0, "RxDiscarded" },
};
#define B53_MIBS_63XX_SIZE ARRAY_SIZE(b53_mibs_63xx)
/* MIB counters */
static const struct b53_mib_desc b53_mibs[] = {
{ 8, 0x00, "TxOctets" },
{ 4, 0x08, "TxDropPkts" },
{ 4, 0x10, "TxBroadcastPkts" },
{ 4, 0x14, "TxMulticastPkts" },
{ 4, 0x18, "TxUnicastPkts" },
{ 4, 0x1c, "TxCollisions" },
{ 4, 0x20, "TxSingleCollision" },
{ 4, 0x24, "TxMultipleCollision" },
{ 4, 0x28, "TxDeferredTransmit" },
{ 4, 0x2c, "TxLateCollision" },
{ 4, 0x30, "TxExcessiveCollision" },
{ 4, 0x38, "TxPausePkts" },
{ 8, 0x50, "RxOctets" },
{ 4, 0x58, "RxUndersizePkts" },
{ 4, 0x5c, "RxPausePkts" },
{ 4, 0x60, "Pkts64Octets" },
{ 4, 0x64, "Pkts65to127Octets" },
{ 4, 0x68, "Pkts128to255Octets" },
{ 4, 0x6c, "Pkts256to511Octets" },
{ 4, 0x70, "Pkts512to1023Octets" },
{ 4, 0x74, "Pkts1024to1522Octets" },
{ 4, 0x78, "RxOversizePkts" },
{ 4, 0x7c, "RxJabbers" },
{ 4, 0x80, "RxAlignmentErrors" },
{ 4, 0x84, "RxFCSErrors" },
{ 8, 0x88, "RxGoodOctets" },
{ 4, 0x90, "RxDropPkts" },
{ 4, 0x94, "RxUnicastPkts" },
{ 4, 0x98, "RxMulticastPkts" },
{ 4, 0x9c, "RxBroadcastPkts" },
{ 4, 0xa0, "RxSAChanges" },
{ 4, 0xa4, "RxFragments" },
{ 4, 0xa8, "RxJumboPkts" },
{ 4, 0xac, "RxSymbolErrors" },
{ 4, 0xc0, "RxDiscarded" },
};
#define B53_MIBS_SIZE ARRAY_SIZE(b53_mibs)
static int b53_do_vlan_op(struct b53_device *dev, u8 op)
{
unsigned int i;
b53_write8(dev, B53_ARLIO_PAGE, dev->vta_regs[0], VTA_START_CMD | op);
for (i = 0; i < 10; i++) {
u8 vta;
b53_read8(dev, B53_ARLIO_PAGE, dev->vta_regs[0], &vta);
if (!(vta & VTA_START_CMD))
return 0;
usleep_range(100, 200);
}
return -EIO;
}
static void b53_set_vlan_entry(struct b53_device *dev, u16 vid,
struct b53_vlan *vlan)
{
if (is5325(dev)) {
u32 entry = 0;
if (vlan->members) {
entry = ((vlan->untag & VA_UNTAG_MASK_25) <<
VA_UNTAG_S_25) | vlan->members;
if (dev->core_rev >= 3)
entry |= VA_VALID_25_R4 | vid << VA_VID_HIGH_S;
else
entry |= VA_VALID_25;
}
b53_write32(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_25, entry);
b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, vid |
VTA_RW_STATE_WR | VTA_RW_OP_EN);
} else if (is5365(dev)) {
u16 entry = 0;
if (vlan->members)
entry = ((vlan->untag & VA_UNTAG_MASK_65) <<
VA_UNTAG_S_65) | vlan->members | VA_VALID_65;
b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_65, entry);
b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_65, vid |
VTA_RW_STATE_WR | VTA_RW_OP_EN);
} else {
b53_write16(dev, B53_ARLIO_PAGE, dev->vta_regs[1], vid);
b53_write32(dev, B53_ARLIO_PAGE, dev->vta_regs[2],
(vlan->untag << VTE_UNTAG_S) | vlan->members);
b53_do_vlan_op(dev, VTA_CMD_WRITE);
}
dev_dbg(dev->ds->dev, "VID: %d, members: 0x%04x, untag: 0x%04x\n",
vid, vlan->members, vlan->untag);
}
static void b53_get_vlan_entry(struct b53_device *dev, u16 vid,
struct b53_vlan *vlan)
{
if (is5325(dev)) {
u32 entry = 0;
b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, vid |
VTA_RW_STATE_RD | VTA_RW_OP_EN);
b53_read32(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_25, &entry);
if (dev->core_rev >= 3)
vlan->valid = !!(entry & VA_VALID_25_R4);
else
vlan->valid = !!(entry & VA_VALID_25);
vlan->members = entry & VA_MEMBER_MASK;
vlan->untag = (entry >> VA_UNTAG_S_25) & VA_UNTAG_MASK_25;
} else if (is5365(dev)) {
u16 entry = 0;
b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_65, vid |
VTA_RW_STATE_WR | VTA_RW_OP_EN);
b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_65, &entry);
vlan->valid = !!(entry & VA_VALID_65);
vlan->members = entry & VA_MEMBER_MASK;
vlan->untag = (entry >> VA_UNTAG_S_65) & VA_UNTAG_MASK_65;
} else {
u32 entry = 0;
b53_write16(dev, B53_ARLIO_PAGE, dev->vta_regs[1], vid);
b53_do_vlan_op(dev, VTA_CMD_READ);
b53_read32(dev, B53_ARLIO_PAGE, dev->vta_regs[2], &entry);
vlan->members = entry & VTE_MEMBERS;
vlan->untag = (entry >> VTE_UNTAG_S) & VTE_MEMBERS;
vlan->valid = true;
}
}
static void b53_set_forwarding(struct b53_device *dev, int enable)
{
u8 mgmt;
b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
if (enable)
mgmt |= SM_SW_FWD_EN;
else
mgmt &= ~SM_SW_FWD_EN;
b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
}
static void b53_enable_vlan(struct b53_device *dev, bool enable)
{
u8 mgmt, vc0, vc1, vc4 = 0, vc5;
b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL0, &vc0);
b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL1, &vc1);
if (is5325(dev) || is5365(dev)) {
b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, &vc4);
b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_25, &vc5);
} else if (is63xx(dev)) {
b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_63XX, &vc4);
b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_63XX, &vc5);
} else {
b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4, &vc4);
b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5, &vc5);
}
mgmt &= ~SM_SW_FWD_MODE;
if (enable) {
vc0 |= VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID;
vc1 |= VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN;
vc4 &= ~VC4_ING_VID_CHECK_MASK;
vc4 |= VC4_ING_VID_VIO_DROP << VC4_ING_VID_CHECK_S;
vc5 |= VC5_DROP_VTABLE_MISS;
if (is5325(dev))
vc0 &= ~VC0_RESERVED_1;
if (is5325(dev) || is5365(dev))
vc1 |= VC1_RX_MCST_TAG_EN;
} else {
vc0 &= ~(VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID);
vc1 &= ~(VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN);
vc4 &= ~VC4_ING_VID_CHECK_MASK;
vc5 &= ~VC5_DROP_VTABLE_MISS;
if (is5325(dev) || is5365(dev))
vc4 |= VC4_ING_VID_VIO_FWD << VC4_ING_VID_CHECK_S;
else
vc4 |= VC4_ING_VID_VIO_TO_IMP << VC4_ING_VID_CHECK_S;
if (is5325(dev) || is5365(dev))
vc1 &= ~VC1_RX_MCST_TAG_EN;
}
if (!is5325(dev) && !is5365(dev))
vc5 &= ~VC5_VID_FFF_EN;
b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL0, vc0);
b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL1, vc1);
if (is5325(dev) || is5365(dev)) {
/* enable the high 8 bit vid check on 5325 */
if (is5325(dev) && enable)
b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3,
VC3_HIGH_8BIT_EN);
else
b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3, 0);
b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, vc4);
b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_25, vc5);
} else if (is63xx(dev)) {
b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3_63XX, 0);
b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_63XX, vc4);
b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_63XX, vc5);
} else {
b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3, 0);
b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4, vc4);
b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5, vc5);
}
b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
}
static int b53_set_jumbo(struct b53_device *dev, bool enable, bool allow_10_100)
{
u32 port_mask = 0;
u16 max_size = JMS_MIN_SIZE;
if (is5325(dev) || is5365(dev))
return -EINVAL;
if (enable) {
port_mask = dev->enabled_ports;
max_size = JMS_MAX_SIZE;
if (allow_10_100)
port_mask |= JPM_10_100_JUMBO_EN;
}
b53_write32(dev, B53_JUMBO_PAGE, dev->jumbo_pm_reg, port_mask);
return b53_write16(dev, B53_JUMBO_PAGE, dev->jumbo_size_reg, max_size);
}
static int b53_flush_arl(struct b53_device *dev, u8 mask)
{
unsigned int i;
b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL,
FAST_AGE_DONE | FAST_AGE_DYNAMIC | mask);
for (i = 0; i < 10; i++) {
u8 fast_age_ctrl;
b53_read8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL,
&fast_age_ctrl);
if (!(fast_age_ctrl & FAST_AGE_DONE))
goto out;
msleep(1);
}
return -ETIMEDOUT;
out:
/* Only age dynamic entries (default behavior) */
b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL, FAST_AGE_DYNAMIC);
return 0;
}
static int b53_fast_age_port(struct b53_device *dev, int port)
{
b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_PORT_CTRL, port);
return b53_flush_arl(dev, FAST_AGE_PORT);
}
static int b53_fast_age_vlan(struct b53_device *dev, u16 vid)
{
b53_write16(dev, B53_CTRL_PAGE, B53_FAST_AGE_VID_CTRL, vid);
return b53_flush_arl(dev, FAST_AGE_VLAN);
}
static void b53_imp_vlan_setup(struct dsa_switch *ds, int cpu_port)
{
struct b53_device *dev = ds_to_priv(ds);
unsigned int i;
u16 pvlan;
/* Enable the IMP port to be in the same VLAN as the other ports
* on a per-port basis such that we only have Port i and IMP in
* the same VLAN.
*/
b53_for_each_port(dev, i) {
b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), &pvlan);
pvlan |= BIT(cpu_port);
b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), pvlan);
}
}
static int b53_enable_port(struct dsa_switch *ds, int port,
struct phy_device *phy)
{
struct b53_device *dev = ds_to_priv(ds);
unsigned int cpu_port = dev->cpu_port;
u16 pvlan;
/* Clear the Rx and Tx disable bits and set to no spanning tree */
b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), 0);
/* Set this port, and only this one to be in the default VLAN,
* if member of a bridge, restore its membership prior to
* bringing down this port.
*/
b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
pvlan &= ~0x1ff;
pvlan |= BIT(port);
pvlan |= dev->ports[port].vlan_ctl_mask;
b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
b53_imp_vlan_setup(ds, cpu_port);
return 0;
}
static void b53_disable_port(struct dsa_switch *ds, int port,
struct phy_device *phy)
{
struct b53_device *dev = ds_to_priv(ds);
u8 reg;
/* Disable Tx/Rx for the port */
b53_read8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), &reg);
reg |= PORT_CTRL_RX_DISABLE | PORT_CTRL_TX_DISABLE;
b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), reg);
}
static void b53_enable_cpu_port(struct b53_device *dev)
{
unsigned int cpu_port = dev->cpu_port;
u8 port_ctrl;
/* BCM5325 CPU port is at 8 */
if ((is5325(dev) || is5365(dev)) && cpu_port == B53_CPU_PORT_25)
cpu_port = B53_CPU_PORT;
port_ctrl = PORT_CTRL_RX_BCST_EN |
PORT_CTRL_RX_MCST_EN |
PORT_CTRL_RX_UCST_EN;
b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(cpu_port), port_ctrl);
}
static void b53_enable_mib(struct b53_device *dev)
{
u8 gc;
b53_read8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &gc);
gc &= ~(GC_RESET_MIB | GC_MIB_AC_EN);
b53_write8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc);
}
static int b53_configure_vlan(struct b53_device *dev)
{
struct b53_vlan vl = { 0 };
int i;
/* clear all vlan entries */
if (is5325(dev) || is5365(dev)) {
for (i = 1; i < dev->num_vlans; i++)
b53_set_vlan_entry(dev, i, &vl);
} else {
b53_do_vlan_op(dev, VTA_CMD_CLEAR);
}
b53_enable_vlan(dev, false);
b53_for_each_port(dev, i)
b53_write16(dev, B53_VLAN_PAGE,
B53_VLAN_PORT_DEF_TAG(i), 1);
if (!is5325(dev) && !is5365(dev))
b53_set_jumbo(dev, dev->enable_jumbo, false);
return 0;
}
static void b53_switch_reset_gpio(struct b53_device *dev)
{
int gpio = dev->reset_gpio;
if (gpio < 0)
return;
/* Reset sequence: RESET low(50ms)->high(20ms)
*/
gpio_set_value(gpio, 0);
mdelay(50);
gpio_set_value(gpio, 1);
mdelay(20);
dev->current_page = 0xff;
}
static int b53_switch_reset(struct b53_device *dev)
{
u8 mgmt;
b53_switch_reset_gpio(dev);
if (is539x(dev)) {
b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, 0x83);
b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, 0x00);
}
b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
if (!(mgmt & SM_SW_FWD_EN)) {
mgmt &= ~SM_SW_FWD_MODE;
mgmt |= SM_SW_FWD_EN;
b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
if (!(mgmt & SM_SW_FWD_EN)) {
dev_err(dev->dev, "Failed to enable switch!\n");
return -EINVAL;
}
}
b53_enable_mib(dev);
return b53_flush_arl(dev, FAST_AGE_STATIC);
}
static int b53_phy_read16(struct dsa_switch *ds, int addr, int reg)
{
struct b53_device *priv = ds_to_priv(ds);
u16 value = 0;
int ret;
if (priv->ops->phy_read16)
ret = priv->ops->phy_read16(priv, addr, reg, &value);
else
ret = b53_read16(priv, B53_PORT_MII_PAGE(addr),
reg * 2, &value);
return ret ? ret : value;
}
static int b53_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val)
{
struct b53_device *priv = ds_to_priv(ds);
if (priv->ops->phy_write16)
return priv->ops->phy_write16(priv, addr, reg, val);
return b53_write16(priv, B53_PORT_MII_PAGE(addr), reg * 2, val);
}
static int b53_reset_switch(struct b53_device *priv)
{
/* reset vlans */
priv->enable_jumbo = false;
memset(priv->vlans, 0, sizeof(*priv->vlans) * priv->num_vlans);
memset(priv->ports, 0, sizeof(*priv->ports) * priv->num_ports);
return b53_switch_reset(priv);
}
static int b53_apply_config(struct b53_device *priv)
{
/* disable switching */
b53_set_forwarding(priv, 0);
b53_configure_vlan(priv);
/* enable switching */
b53_set_forwarding(priv, 1);
return 0;
}
static void b53_reset_mib(struct b53_device *priv)
{
u8 gc;
b53_read8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &gc);
b53_write8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc | GC_RESET_MIB);
msleep(1);
b53_write8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc & ~GC_RESET_MIB);
msleep(1);
}
static const struct b53_mib_desc *b53_get_mib(struct b53_device *dev)
{
if (is5365(dev))
return b53_mibs_65;
else if (is63xx(dev))
return b53_mibs_63xx;
else
return b53_mibs;
}
static unsigned int b53_get_mib_size(struct b53_device *dev)
{
if (is5365(dev))
return B53_MIBS_65_SIZE;
else if (is63xx(dev))
return B53_MIBS_63XX_SIZE;
else
return B53_MIBS_SIZE;
}
static void b53_get_strings(struct dsa_switch *ds, int port, uint8_t *data)
{
struct b53_device *dev = ds_to_priv(ds);
const struct b53_mib_desc *mibs = b53_get_mib(dev);
unsigned int mib_size = b53_get_mib_size(dev);
unsigned int i;
for (i = 0; i < mib_size; i++)
memcpy(data + i * ETH_GSTRING_LEN,
mibs[i].name, ETH_GSTRING_LEN);
}
static void b53_get_ethtool_stats(struct dsa_switch *ds, int port,
uint64_t *data)
{
struct b53_device *dev = ds_to_priv(ds);
const struct b53_mib_desc *mibs = b53_get_mib(dev);
unsigned int mib_size = b53_get_mib_size(dev);
const struct b53_mib_desc *s;
unsigned int i;
u64 val = 0;
if (is5365(dev) && port == 5)
port = 8;
mutex_lock(&dev->stats_mutex);
for (i = 0; i < mib_size; i++) {
s = &mibs[i];
if (s->size == 8) {
b53_read64(dev, B53_MIB_PAGE(port), s->offset, &val);
} else {
u32 val32;
b53_read32(dev, B53_MIB_PAGE(port), s->offset,
&val32);
val = val32;
}
data[i] = (u64)val;
}
mutex_unlock(&dev->stats_mutex);
}
static int b53_get_sset_count(struct dsa_switch *ds)
{
struct b53_device *dev = ds_to_priv(ds);
return b53_get_mib_size(dev);
}
static int b53_set_addr(struct dsa_switch *ds, u8 *addr)
{
return 0;
}
static int b53_setup(struct dsa_switch *ds)
{
struct b53_device *dev = ds_to_priv(ds);
unsigned int port;
int ret;
ret = b53_reset_switch(dev);
if (ret) {
dev_err(ds->dev, "failed to reset switch\n");
return ret;
}
b53_reset_mib(dev);
ret = b53_apply_config(dev);
if (ret)
dev_err(ds->dev, "failed to apply configuration\n");
for (port = 0; port < dev->num_ports; port++) {
if (BIT(port) & ds->enabled_port_mask)
b53_enable_port(ds, port, NULL);
else if (dsa_is_cpu_port(ds, port))
b53_enable_cpu_port(dev);
else
b53_disable_port(ds, port, NULL);
}
return ret;
}
static void b53_adjust_link(struct dsa_switch *ds, int port,
struct phy_device *phydev)
{
struct b53_device *dev = ds_to_priv(ds);
u8 rgmii_ctrl = 0, reg = 0, off;
if (!phy_is_pseudo_fixed_link(phydev))
return;
/* Override the port settings */
if (port == dev->cpu_port) {
off = B53_PORT_OVERRIDE_CTRL;
reg = PORT_OVERRIDE_EN;
} else {
off = B53_GMII_PORT_OVERRIDE_CTRL(port);
reg = GMII_PO_EN;
}
/* Set the link UP */
if (phydev->link)
reg |= PORT_OVERRIDE_LINK;
if (phydev->duplex == DUPLEX_FULL)
reg |= PORT_OVERRIDE_FULL_DUPLEX;
switch (phydev->speed) {
case 2000:
reg |= PORT_OVERRIDE_SPEED_2000M;
/* fallthrough */
case SPEED_1000:
reg |= PORT_OVERRIDE_SPEED_1000M;
break;
case SPEED_100:
reg |= PORT_OVERRIDE_SPEED_100M;
break;
case SPEED_10:
reg |= PORT_OVERRIDE_SPEED_10M;
break;
default:
dev_err(ds->dev, "unknown speed: %d\n", phydev->speed);
return;
}
/* Enable flow control on BCM5301x's CPU port */
if (is5301x(dev) && port == dev->cpu_port)
reg |= PORT_OVERRIDE_RX_FLOW | PORT_OVERRIDE_TX_FLOW;
if (phydev->pause) {
if (phydev->asym_pause)
reg |= PORT_OVERRIDE_TX_FLOW;
reg |= PORT_OVERRIDE_RX_FLOW;
}
b53_write8(dev, B53_CTRL_PAGE, off, reg);
if (is531x5(dev) && phy_interface_is_rgmii(phydev)) {
if (port == 8)
off = B53_RGMII_CTRL_IMP;
else
off = B53_RGMII_CTRL_P(port);
/* Configure the port RGMII clock delay by DLL disabled and
* tx_clk aligned timing (restoring to reset defaults)
*/
b53_read8(dev, B53_CTRL_PAGE, off, &rgmii_ctrl);
rgmii_ctrl &= ~(RGMII_CTRL_DLL_RXC | RGMII_CTRL_DLL_TXC |
RGMII_CTRL_TIMING_SEL);
/* PHY_INTERFACE_MODE_RGMII_TXID means TX internal delay, make
* sure that we enable the port TX clock internal delay to
* account for this internal delay that is inserted, otherwise
* the switch won't be able to receive correctly.
*
* PHY_INTERFACE_MODE_RGMII means that we are not introducing
* any delay neither on transmission nor reception, so the
* BCM53125 must also be configured accordingly to account for
* the lack of delay and introduce
*
* The BCM53125 switch has its RX clock and TX clock control
* swapped, hence the reason why we modify the TX clock path in
* the "RGMII" case
*/
if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)
rgmii_ctrl |= RGMII_CTRL_DLL_TXC;
if (phydev->interface == PHY_INTERFACE_MODE_RGMII)
rgmii_ctrl |= RGMII_CTRL_DLL_TXC | RGMII_CTRL_DLL_RXC;
rgmii_ctrl |= RGMII_CTRL_TIMING_SEL;
b53_write8(dev, B53_CTRL_PAGE, off, rgmii_ctrl);
dev_info(ds->dev, "Configured port %d for %s\n", port,
phy_modes(phydev->interface));
}
/* configure MII port if necessary */
if (is5325(dev)) {
b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
&reg);
/* reverse mii needs to be enabled */
if (!(reg & PORT_OVERRIDE_RV_MII_25)) {
b53_write8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
reg | PORT_OVERRIDE_RV_MII_25);
b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
&reg);
if (!(reg & PORT_OVERRIDE_RV_MII_25)) {
dev_err(ds->dev,
"Failed to enable reverse MII mode\n");
return;
}
}
} else if (is5301x(dev)) {
if (port != dev->cpu_port) {
u8 po_reg = B53_GMII_PORT_OVERRIDE_CTRL(dev->cpu_port);
u8 gmii_po;
b53_read8(dev, B53_CTRL_PAGE, po_reg, &gmii_po);
gmii_po |= GMII_PO_LINK |
GMII_PO_RX_FLOW |
GMII_PO_TX_FLOW |
GMII_PO_EN |
GMII_PO_SPEED_2000M;
b53_write8(dev, B53_CTRL_PAGE, po_reg, gmii_po);
}
}
}
static int b53_vlan_filtering(struct dsa_switch *ds, int port,
bool vlan_filtering)
{
return 0;
}
static int b53_vlan_prepare(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan,
struct switchdev_trans *trans)
{
struct b53_device *dev = ds_to_priv(ds);
if ((is5325(dev) || is5365(dev)) && vlan->vid_begin == 0)
return -EOPNOTSUPP;
if (vlan->vid_end > dev->num_vlans)
return -ERANGE;
b53_enable_vlan(dev, true);
return 0;
}
static void b53_vlan_add(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan,
struct switchdev_trans *trans)
{
struct b53_device *dev = ds_to_priv(ds);
bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
unsigned int cpu_port = dev->cpu_port;
struct b53_vlan *vl;
u16 vid;
for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
vl = &dev->vlans[vid];
b53_get_vlan_entry(dev, vid, vl);
vl->members |= BIT(port) | BIT(cpu_port);
if (untagged)
vl->untag |= BIT(port) | BIT(cpu_port);
else
vl->untag &= ~(BIT(port) | BIT(cpu_port));
b53_set_vlan_entry(dev, vid, vl);
b53_fast_age_vlan(dev, vid);
}
if (pvid) {
b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port),
vlan->vid_end);
b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(cpu_port),
vlan->vid_end);
b53_fast_age_vlan(dev, vid);
}
}
static int b53_vlan_del(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan)
{
struct b53_device *dev = ds_to_priv(ds);
bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
unsigned int cpu_port = dev->cpu_port;
struct b53_vlan *vl;
u16 vid;
u16 pvid;
b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), &pvid);
for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
vl = &dev->vlans[vid];
b53_get_vlan_entry(dev, vid, vl);
vl->members &= ~BIT(port);
if ((vl->members & BIT(cpu_port)) == BIT(cpu_port))
vl->members = 0;
if (pvid == vid) {
if (is5325(dev) || is5365(dev))
pvid = 1;
else
pvid = 0;
}
if (untagged) {
vl->untag &= ~(BIT(port));
if ((vl->untag & BIT(cpu_port)) == BIT(cpu_port))
vl->untag = 0;
}
b53_set_vlan_entry(dev, vid, vl);
b53_fast_age_vlan(dev, vid);
}
b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), pvid);
b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(cpu_port), pvid);
b53_fast_age_vlan(dev, pvid);
return 0;
}
static int b53_vlan_dump(struct dsa_switch *ds, int port,
struct switchdev_obj_port_vlan *vlan,
int (*cb)(struct switchdev_obj *obj))
{
struct b53_device *dev = ds_to_priv(ds);
u16 vid, vid_start = 0, pvid;
struct b53_vlan *vl;
int err = 0;
if (is5325(dev) || is5365(dev))
vid_start = 1;
b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), &pvid);
/* Use our software cache for dumps, since we do not have any HW
* operation returning only the used/valid VLANs
*/
for (vid = vid_start; vid < dev->num_vlans; vid++) {
vl = &dev->vlans[vid];
if (!vl->valid)
continue;
if (!(vl->members & BIT(port)))
continue;
vlan->vid_begin = vlan->vid_end = vid;
vlan->flags = 0;
if (vl->untag & BIT(port))
vlan->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
if (pvid == vid)
vlan->flags |= BRIDGE_VLAN_INFO_PVID;
err = cb(&vlan->obj);
if (err)
break;
}
return err;
}
/* Address Resolution Logic routines */
static int b53_arl_op_wait(struct b53_device *dev)
{
unsigned int timeout = 10;
u8 reg;
do {
b53_read8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, &reg);
if (!(reg & ARLTBL_START_DONE))
return 0;
usleep_range(1000, 2000);
} while (timeout--);
dev_warn(dev->dev, "timeout waiting for ARL to finish: 0x%02x\n", reg);
return -ETIMEDOUT;
}
static int b53_arl_rw_op(struct b53_device *dev, unsigned int op)
{
u8 reg;
if (op > ARLTBL_RW)
return -EINVAL;
b53_read8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, &reg);
reg |= ARLTBL_START_DONE;
if (op)
reg |= ARLTBL_RW;
else
reg &= ~ARLTBL_RW;
b53_write8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, reg);
return b53_arl_op_wait(dev);
}
static int b53_arl_read(struct b53_device *dev, u64 mac,
u16 vid, struct b53_arl_entry *ent, u8 *idx,
bool is_valid)
{
unsigned int i;
int ret;
ret = b53_arl_op_wait(dev);
if (ret)
return ret;
/* Read the bins */
for (i = 0; i < dev->num_arl_entries; i++) {
u64 mac_vid;
u32 fwd_entry;
b53_read64(dev, B53_ARLIO_PAGE,
B53_ARLTBL_MAC_VID_ENTRY(i), &mac_vid);
b53_read32(dev, B53_ARLIO_PAGE,
B53_ARLTBL_DATA_ENTRY(i), &fwd_entry);
b53_arl_to_entry(ent, mac_vid, fwd_entry);
if (!(fwd_entry & ARLTBL_VALID))
continue;
if ((mac_vid & ARLTBL_MAC_MASK) != mac)
continue;
*idx = i;
}
return -ENOENT;
}
static int b53_arl_op(struct b53_device *dev, int op, int port,
const unsigned char *addr, u16 vid, bool is_valid)
{
struct b53_arl_entry ent;
u32 fwd_entry;
u64 mac, mac_vid = 0;
u8 idx = 0;
int ret;
/* Convert the array into a 64-bit MAC */
mac = b53_mac_to_u64(addr);
/* Perform a read for the given MAC and VID */
b53_write48(dev, B53_ARLIO_PAGE, B53_MAC_ADDR_IDX, mac);
b53_write16(dev, B53_ARLIO_PAGE, B53_VLAN_ID_IDX, vid);
/* Issue a read operation for this MAC */
ret = b53_arl_rw_op(dev, 1);
if (ret)
return ret;
ret = b53_arl_read(dev, mac, vid, &ent, &idx, is_valid);
/* If this is a read, just finish now */
if (op)
return ret;
/* We could not find a matching MAC, so reset to a new entry */
if (ret) {
fwd_entry = 0;
idx = 1;
}
memset(&ent, 0, sizeof(ent));
ent.port = port;
ent.is_valid = is_valid;
ent.vid = vid;
ent.is_static = true;
memcpy(ent.mac, addr, ETH_ALEN);
b53_arl_from_entry(&mac_vid, &fwd_entry, &ent);
b53_write64(dev, B53_ARLIO_PAGE,
B53_ARLTBL_MAC_VID_ENTRY(idx), mac_vid);
b53_write32(dev, B53_ARLIO_PAGE,
B53_ARLTBL_DATA_ENTRY(idx), fwd_entry);
return b53_arl_rw_op(dev, 0);
}
static int b53_fdb_prepare(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_fdb *fdb,
struct switchdev_trans *trans)
{
struct b53_device *priv = ds_to_priv(ds);
/* 5325 and 5365 require some more massaging, but could
* be supported eventually
*/
if (is5325(priv) || is5365(priv))
return -EOPNOTSUPP;
return 0;
}
static void b53_fdb_add(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_fdb *fdb,
struct switchdev_trans *trans)
{
struct b53_device *priv = ds_to_priv(ds);
if (b53_arl_op(priv, 0, port, fdb->addr, fdb->vid, true))
pr_err("%s: failed to add MAC address\n", __func__);
}
static int b53_fdb_del(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_fdb *fdb)
{
struct b53_device *priv = ds_to_priv(ds);
return b53_arl_op(priv, 0, port, fdb->addr, fdb->vid, false);
}
static int b53_arl_search_wait(struct b53_device *dev)
{
unsigned int timeout = 1000;
u8 reg;
do {
b53_read8(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_CTL, &reg);
if (!(reg & ARL_SRCH_STDN))
return 0;
if (reg & ARL_SRCH_VLID)
return 0;
usleep_range(1000, 2000);
} while (timeout--);
return -ETIMEDOUT;
}
static void b53_arl_search_rd(struct b53_device *dev, u8 idx,
struct b53_arl_entry *ent)
{
u64 mac_vid;
u32 fwd_entry;
b53_read64(dev, B53_ARLIO_PAGE,
B53_ARL_SRCH_RSTL_MACVID(idx), &mac_vid);
b53_read32(dev, B53_ARLIO_PAGE,
B53_ARL_SRCH_RSTL(idx), &fwd_entry);
b53_arl_to_entry(ent, mac_vid, fwd_entry);
}
static int b53_fdb_copy(struct net_device *dev, int port,
const struct b53_arl_entry *ent,
struct switchdev_obj_port_fdb *fdb,
int (*cb)(struct switchdev_obj *obj))
{
if (!ent->is_valid)
return 0;
if (port != ent->port)
return 0;
ether_addr_copy(fdb->addr, ent->mac);
fdb->vid = ent->vid;
fdb->ndm_state = ent->is_static ? NUD_NOARP : NUD_REACHABLE;
return cb(&fdb->obj);
}
static int b53_fdb_dump(struct dsa_switch *ds, int port,
struct switchdev_obj_port_fdb *fdb,
int (*cb)(struct switchdev_obj *obj))
{
struct b53_device *priv = ds_to_priv(ds);
struct net_device *dev = ds->ports[port].netdev;
struct b53_arl_entry results[2];
unsigned int count = 0;
int ret;
u8 reg;
/* Start search operation */
reg = ARL_SRCH_STDN;
b53_write8(priv, B53_ARLIO_PAGE, B53_ARL_SRCH_CTL, reg);
do {
ret = b53_arl_search_wait(priv);
if (ret)
return ret;
b53_arl_search_rd(priv, 0, &results[0]);
ret = b53_fdb_copy(dev, port, &results[0], fdb, cb);
if (ret)
return ret;
if (priv->num_arl_entries > 2) {
b53_arl_search_rd(priv, 1, &results[1]);
ret = b53_fdb_copy(dev, port, &results[1], fdb, cb);
if (ret)
return ret;
if (!results[0].is_valid && !results[1].is_valid)
break;
}
} while (count++ < 1024);
return 0;
}
static int b53_br_join(struct dsa_switch *ds, int port,
struct net_device *bridge)
{
struct b53_device *dev = ds_to_priv(ds);
u16 pvlan, reg;
unsigned int i;
dev->ports[port].bridge_dev = bridge;
b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
b53_for_each_port(dev, i) {
if (dev->ports[i].bridge_dev != bridge)
continue;
/* Add this local port to the remote port VLAN control
* membership and update the remote port bitmask
*/
b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), &reg);
reg |= BIT(port);
b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), reg);
dev->ports[i].vlan_ctl_mask = reg;
pvlan |= BIT(i);
}
/* Configure the local port VLAN control membership to include
* remote ports and update the local port bitmask
*/
b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
dev->ports[port].vlan_ctl_mask = pvlan;
return 0;
}
static void b53_br_leave(struct dsa_switch *ds, int port)
{
struct b53_device *dev = ds_to_priv(ds);
struct net_device *bridge = dev->ports[port].bridge_dev;
struct b53_vlan *vl = &dev->vlans[0];
unsigned int i;
u16 pvlan, reg, pvid;
b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
b53_for_each_port(dev, i) {
/* Don't touch the remaining ports */
if (dev->ports[i].bridge_dev != bridge)
continue;
b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), &reg);
reg &= ~BIT(port);
b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), reg);
dev->ports[port].vlan_ctl_mask = reg;
/* Prevent self removal to preserve isolation */
if (port != i)
pvlan &= ~BIT(i);
}
b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
dev->ports[port].vlan_ctl_mask = pvlan;
dev->ports[port].bridge_dev = NULL;
if (is5325(dev) || is5365(dev))
pvid = 1;
else
pvid = 0;
b53_get_vlan_entry(dev, pvid, vl);
vl->members |= BIT(port) | BIT(dev->cpu_port);
vl->untag |= BIT(port) | BIT(dev->cpu_port);
b53_set_vlan_entry(dev, pvid, vl);
}
static void b53_br_set_stp_state(struct dsa_switch *ds, int port,
u8 state)
{
struct b53_device *dev = ds_to_priv(ds);
u8 hw_state, cur_hw_state;
u8 reg;
b53_read8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), &reg);
cur_hw_state = reg & PORT_CTRL_STP_STATE_MASK;
switch (state) {
case BR_STATE_DISABLED:
hw_state = PORT_CTRL_DIS_STATE;
break;
case BR_STATE_LISTENING:
hw_state = PORT_CTRL_LISTEN_STATE;
break;
case BR_STATE_LEARNING:
hw_state = PORT_CTRL_LEARN_STATE;
break;
case BR_STATE_FORWARDING:
hw_state = PORT_CTRL_FWD_STATE;
break;
case BR_STATE_BLOCKING:
hw_state = PORT_CTRL_BLOCK_STATE;
break;
default:
dev_err(ds->dev, "invalid STP state: %d\n", state);
return;
}
/* Fast-age ARL entries if we are moving a port from Learning or
* Forwarding (cur_hw_state) state to Disabled, Blocking or Listening
* state (hw_state)
*/
if (cur_hw_state != hw_state) {
if (cur_hw_state >= PORT_CTRL_LEARN_STATE &&
hw_state <= PORT_CTRL_LISTEN_STATE) {
if (b53_fast_age_port(dev, port)) {
dev_err(ds->dev, "fast ageing failed\n");
return;
}
}
}
b53_read8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), &reg);
reg &= ~PORT_CTRL_STP_STATE_MASK;
reg |= hw_state;
b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), reg);
}
static struct dsa_switch_driver b53_switch_ops = {
.tag_protocol = DSA_TAG_PROTO_NONE,
.setup = b53_setup,
.set_addr = b53_set_addr,
.get_strings = b53_get_strings,
.get_ethtool_stats = b53_get_ethtool_stats,
.get_sset_count = b53_get_sset_count,
.phy_read = b53_phy_read16,
.phy_write = b53_phy_write16,
.adjust_link = b53_adjust_link,
.port_enable = b53_enable_port,
.port_disable = b53_disable_port,
.port_bridge_join = b53_br_join,
.port_bridge_leave = b53_br_leave,
.port_stp_state_set = b53_br_set_stp_state,
.port_vlan_filtering = b53_vlan_filtering,
.port_vlan_prepare = b53_vlan_prepare,
.port_vlan_add = b53_vlan_add,
.port_vlan_del = b53_vlan_del,
.port_vlan_dump = b53_vlan_dump,
.port_fdb_prepare = b53_fdb_prepare,
.port_fdb_dump = b53_fdb_dump,
.port_fdb_add = b53_fdb_add,
.port_fdb_del = b53_fdb_del,
};
struct b53_chip_data {
u32 chip_id;
const char *dev_name;
u16 vlans;
u16 enabled_ports;
u8 cpu_port;
u8 vta_regs[3];
u8 arl_entries;
u8 duplex_reg;
u8 jumbo_pm_reg;
u8 jumbo_size_reg;
};
#define B53_VTA_REGS \
{ B53_VT_ACCESS, B53_VT_INDEX, B53_VT_ENTRY }
#define B53_VTA_REGS_9798 \
{ B53_VT_ACCESS_9798, B53_VT_INDEX_9798, B53_VT_ENTRY_9798 }
#define B53_VTA_REGS_63XX \
{ B53_VT_ACCESS_63XX, B53_VT_INDEX_63XX, B53_VT_ENTRY_63XX }
static const struct b53_chip_data b53_switch_chips[] = {
{
.chip_id = BCM5325_DEVICE_ID,
.dev_name = "BCM5325",
.vlans = 16,
.enabled_ports = 0x1f,
.arl_entries = 2,
.cpu_port = B53_CPU_PORT_25,
.duplex_reg = B53_DUPLEX_STAT_FE,
},
{
.chip_id = BCM5365_DEVICE_ID,
.dev_name = "BCM5365",
.vlans = 256,
.enabled_ports = 0x1f,
.arl_entries = 2,
.cpu_port = B53_CPU_PORT_25,
.duplex_reg = B53_DUPLEX_STAT_FE,
},
{
.chip_id = BCM5395_DEVICE_ID,
.dev_name = "BCM5395",
.vlans = 4096,
.enabled_ports = 0x1f,
.arl_entries = 4,
.cpu_port = B53_CPU_PORT,
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
},
{
.chip_id = BCM5397_DEVICE_ID,
.dev_name = "BCM5397",
.vlans = 4096,
.enabled_ports = 0x1f,
.arl_entries = 4,
.cpu_port = B53_CPU_PORT,
.vta_regs = B53_VTA_REGS_9798,
.duplex_reg = B53_DUPLEX_STAT_GE,
.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
},
{
.chip_id = BCM5398_DEVICE_ID,
.dev_name = "BCM5398",
.vlans = 4096,
.enabled_ports = 0x7f,
.arl_entries = 4,
.cpu_port = B53_CPU_PORT,
.vta_regs = B53_VTA_REGS_9798,
.duplex_reg = B53_DUPLEX_STAT_GE,
.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
},
{
.chip_id = BCM53115_DEVICE_ID,
.dev_name = "BCM53115",
.vlans = 4096,
.enabled_ports = 0x1f,
.arl_entries = 4,
.vta_regs = B53_VTA_REGS,
.cpu_port = B53_CPU_PORT,
.duplex_reg = B53_DUPLEX_STAT_GE,
.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
},
{
.chip_id = BCM53125_DEVICE_ID,
.dev_name = "BCM53125",
.vlans = 4096,
.enabled_ports = 0xff,
.cpu_port = B53_CPU_PORT,
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
},
{
.chip_id = BCM53128_DEVICE_ID,
.dev_name = "BCM53128",
.vlans = 4096,
.enabled_ports = 0x1ff,
.arl_entries = 4,
.cpu_port = B53_CPU_PORT,
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
},
{
.chip_id = BCM63XX_DEVICE_ID,
.dev_name = "BCM63xx",
.vlans = 4096,
.enabled_ports = 0, /* pdata must provide them */
.arl_entries = 4,
.cpu_port = B53_CPU_PORT,
.vta_regs = B53_VTA_REGS_63XX,
.duplex_reg = B53_DUPLEX_STAT_63XX,
.jumbo_pm_reg = B53_JUMBO_PORT_MASK_63XX,
.jumbo_size_reg = B53_JUMBO_MAX_SIZE_63XX,
},
{
.chip_id = BCM53010_DEVICE_ID,
.dev_name = "BCM53010",
.vlans = 4096,
.enabled_ports = 0x1f,
.arl_entries = 4,
.cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
},
{
.chip_id = BCM53011_DEVICE_ID,
.dev_name = "BCM53011",
.vlans = 4096,
.enabled_ports = 0x1bf,
.arl_entries = 4,
.cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
},
{
.chip_id = BCM53012_DEVICE_ID,
.dev_name = "BCM53012",
.vlans = 4096,
.enabled_ports = 0x1bf,
.arl_entries = 4,
.cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
},
{
.chip_id = BCM53018_DEVICE_ID,
.dev_name = "BCM53018",
.vlans = 4096,
.enabled_ports = 0x1f,
.arl_entries = 4,
.cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
},
{
.chip_id = BCM53019_DEVICE_ID,
.dev_name = "BCM53019",
.vlans = 4096,
.enabled_ports = 0x1f,
.arl_entries = 4,
.cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
},
};
static int b53_switch_init(struct b53_device *dev)
{
struct dsa_switch *ds = dev->ds;
unsigned int i;
int ret;
for (i = 0; i < ARRAY_SIZE(b53_switch_chips); i++) {
const struct b53_chip_data *chip = &b53_switch_chips[i];
if (chip->chip_id == dev->chip_id) {
if (!dev->enabled_ports)
dev->enabled_ports = chip->enabled_ports;
dev->name = chip->dev_name;
dev->duplex_reg = chip->duplex_reg;
dev->vta_regs[0] = chip->vta_regs[0];
dev->vta_regs[1] = chip->vta_regs[1];
dev->vta_regs[2] = chip->vta_regs[2];
dev->jumbo_pm_reg = chip->jumbo_pm_reg;
ds->drv = &b53_switch_ops;
dev->cpu_port = chip->cpu_port;
dev->num_vlans = chip->vlans;
dev->num_arl_entries = chip->arl_entries;
break;
}
}
/* check which BCM5325x version we have */
if (is5325(dev)) {
u8 vc4;
b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, &vc4);
/* check reserved bits */
switch (vc4 & 3) {
case 1:
/* BCM5325E */
break;
case 3:
/* BCM5325F - do not use port 4 */
dev->enabled_ports &= ~BIT(4);
break;
default:
/* On the BCM47XX SoCs this is the supported internal switch.*/
#ifndef CONFIG_BCM47XX
/* BCM5325M */
return -EINVAL;
#else
break;
#endif
}
} else if (dev->chip_id == BCM53115_DEVICE_ID) {
u64 strap_value;
b53_read48(dev, B53_STAT_PAGE, B53_STRAP_VALUE, &strap_value);
/* use second IMP port if GMII is enabled */
if (strap_value & SV_GMII_CTRL_115)
dev->cpu_port = 5;
}
/* cpu port is always last */
dev->num_ports = dev->cpu_port + 1;
dev->enabled_ports |= BIT(dev->cpu_port);
dev->ports = devm_kzalloc(dev->dev,
sizeof(struct b53_port) * dev->num_ports,
GFP_KERNEL);
if (!dev->ports)
return -ENOMEM;
dev->vlans = devm_kzalloc(dev->dev,
sizeof(struct b53_vlan) * dev->num_vlans,
GFP_KERNEL);
if (!dev->vlans)
return -ENOMEM;
dev->reset_gpio = b53_switch_get_reset_gpio(dev);
if (dev->reset_gpio >= 0) {
ret = devm_gpio_request_one(dev->dev, dev->reset_gpio,
GPIOF_OUT_INIT_HIGH, "robo_reset");
if (ret)
return ret;
}
return 0;
}
struct b53_device *b53_switch_alloc(struct device *base, struct b53_io_ops *ops,
void *priv)
{
struct dsa_switch *ds;
struct b53_device *dev;
ds = devm_kzalloc(base, sizeof(*ds) + sizeof(*dev), GFP_KERNEL);
if (!ds)
return NULL;
dev = (struct b53_device *)(ds + 1);
ds->priv = dev;
ds->dev = base;
dev->dev = base;
dev->ds = ds;
dev->priv = priv;
dev->ops = ops;
mutex_init(&dev->reg_mutex);
mutex_init(&dev->stats_mutex);
return dev;
}
EXPORT_SYMBOL(b53_switch_alloc);
int b53_switch_detect(struct b53_device *dev)
{
u32 id32;
u16 tmp;
u8 id8;
int ret;
ret = b53_read8(dev, B53_MGMT_PAGE, B53_DEVICE_ID, &id8);
if (ret)
return ret;
switch (id8) {
case 0:
/* BCM5325 and BCM5365 do not have this register so reads
* return 0. But the read operation did succeed, so assume this
* is one of them.
*
* Next check if we can write to the 5325's VTA register; for
* 5365 it is read only.
*/
b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, 0xf);
b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, &tmp);
if (tmp == 0xf)
dev->chip_id = BCM5325_DEVICE_ID;
else
dev->chip_id = BCM5365_DEVICE_ID;
break;
case BCM5395_DEVICE_ID:
case BCM5397_DEVICE_ID:
case BCM5398_DEVICE_ID:
dev->chip_id = id8;
break;
default:
ret = b53_read32(dev, B53_MGMT_PAGE, B53_DEVICE_ID, &id32);
if (ret)
return ret;
switch (id32) {
case BCM53115_DEVICE_ID:
case BCM53125_DEVICE_ID:
case BCM53128_DEVICE_ID:
case BCM53010_DEVICE_ID:
case BCM53011_DEVICE_ID:
case BCM53012_DEVICE_ID:
case BCM53018_DEVICE_ID:
case BCM53019_DEVICE_ID:
dev->chip_id = id32;
break;
default:
pr_err("unsupported switch detected (BCM53%02x/BCM%x)\n",
id8, id32);
return -ENODEV;
}
}
if (dev->chip_id == BCM5325_DEVICE_ID)
return b53_read8(dev, B53_STAT_PAGE, B53_REV_ID_25,
&dev->core_rev);
else
return b53_read8(dev, B53_MGMT_PAGE, B53_REV_ID,
&dev->core_rev);
}
EXPORT_SYMBOL(b53_switch_detect);
int b53_switch_register(struct b53_device *dev)
{
int ret;
if (dev->pdata) {
dev->chip_id = dev->pdata->chip_id;
dev->enabled_ports = dev->pdata->enabled_ports;
}
if (!dev->chip_id && b53_switch_detect(dev))
return -EINVAL;
ret = b53_switch_init(dev);
if (ret)
return ret;
pr_info("found switch: %s, rev %i\n", dev->name, dev->core_rev);
return dsa_register_switch(dev->ds, dev->ds->dev->of_node);
}
EXPORT_SYMBOL(b53_switch_register);
MODULE_AUTHOR("Jonas Gorski <jogo@openwrt.org>");
MODULE_DESCRIPTION("B53 switch library");
MODULE_LICENSE("Dual BSD/GPL");
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