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linux/drivers/net/ethernet/mscc/ocelot.c
Claudiu Manoil 1e1caa9735 ocelot: Clean up stats update deferred work 
This is preventive cleanup that may save troubles later.
No need to cancel repeateadly queued work if code is properly
refactored.
Don't let the ethtool -s process interfere with the stat workqueue
scheduling.

Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-16 21:43:53 -07:00

1832 lines
48 KiB
C
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// SPDX-License-Identifier: (GPL-2.0 OR MIT)
/*
* Microsemi Ocelot Switch driver
*
* Copyright (c) 2017 Microsemi Corporation
*/
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/if_bridge.h>
#include <linux/if_ether.h>
#include <linux/if_vlan.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/phy.h>
#include <linux/skbuff.h>
#include <linux/iopoll.h>
#include <net/arp.h>
#include <net/netevent.h>
#include <net/rtnetlink.h>
#include <net/switchdev.h>
#include "ocelot.h"
#define TABLE_UPDATE_SLEEP_US 10
#define TABLE_UPDATE_TIMEOUT_US 100000
/* MAC table entry types.
* ENTRYTYPE_NORMAL is subject to aging.
* ENTRYTYPE_LOCKED is not subject to aging.
* ENTRYTYPE_MACv4 is not subject to aging. For IPv4 multicast.
* ENTRYTYPE_MACv6 is not subject to aging. For IPv6 multicast.
*/
enum macaccess_entry_type {
ENTRYTYPE_NORMAL = 0,
ENTRYTYPE_LOCKED,
ENTRYTYPE_MACv4,
ENTRYTYPE_MACv6,
};
struct ocelot_mact_entry {
u8 mac[ETH_ALEN];
u16 vid;
enum macaccess_entry_type type;
};
static inline u32 ocelot_mact_read_macaccess(struct ocelot *ocelot)
{
return ocelot_read(ocelot, ANA_TABLES_MACACCESS);
}
static inline int ocelot_mact_wait_for_completion(struct ocelot *ocelot)
{
u32 val;
return readx_poll_timeout(ocelot_mact_read_macaccess,
ocelot, val,
(val & ANA_TABLES_MACACCESS_MAC_TABLE_CMD_M) ==
MACACCESS_CMD_IDLE,
TABLE_UPDATE_SLEEP_US, TABLE_UPDATE_TIMEOUT_US);
}
static void ocelot_mact_select(struct ocelot *ocelot,
const unsigned char mac[ETH_ALEN],
unsigned int vid)
{
u32 macl = 0, mach = 0;
/* Set the MAC address to handle and the vlan associated in a format
* understood by the hardware.
*/
mach |= vid << 16;
mach |= mac[0] << 8;
mach |= mac[1] << 0;
macl |= mac[2] << 24;
macl |= mac[3] << 16;
macl |= mac[4] << 8;
macl |= mac[5] << 0;
ocelot_write(ocelot, macl, ANA_TABLES_MACLDATA);
ocelot_write(ocelot, mach, ANA_TABLES_MACHDATA);
}
static int ocelot_mact_learn(struct ocelot *ocelot, int port,
const unsigned char mac[ETH_ALEN],
unsigned int vid,
enum macaccess_entry_type type)
{
ocelot_mact_select(ocelot, mac, vid);
/* Issue a write command */
ocelot_write(ocelot, ANA_TABLES_MACACCESS_VALID |
ANA_TABLES_MACACCESS_DEST_IDX(port) |
ANA_TABLES_MACACCESS_ENTRYTYPE(type) |
ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_LEARN),
ANA_TABLES_MACACCESS);
return ocelot_mact_wait_for_completion(ocelot);
}
static int ocelot_mact_forget(struct ocelot *ocelot,
const unsigned char mac[ETH_ALEN],
unsigned int vid)
{
ocelot_mact_select(ocelot, mac, vid);
/* Issue a forget command */
ocelot_write(ocelot,
ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_FORGET),
ANA_TABLES_MACACCESS);
return ocelot_mact_wait_for_completion(ocelot);
}
static void ocelot_mact_init(struct ocelot *ocelot)
{
/* Configure the learning mode entries attributes:
* - Do not copy the frame to the CPU extraction queues.
* - Use the vlan and mac_cpoy for dmac lookup.
*/
ocelot_rmw(ocelot, 0,
ANA_AGENCTRL_LEARN_CPU_COPY | ANA_AGENCTRL_IGNORE_DMAC_FLAGS
| ANA_AGENCTRL_LEARN_FWD_KILL
| ANA_AGENCTRL_LEARN_IGNORE_VLAN,
ANA_AGENCTRL);
/* Clear the MAC table */
ocelot_write(ocelot, MACACCESS_CMD_INIT, ANA_TABLES_MACACCESS);
}
static inline u32 ocelot_vlant_read_vlanaccess(struct ocelot *ocelot)
{
return ocelot_read(ocelot, ANA_TABLES_VLANACCESS);
}
static inline int ocelot_vlant_wait_for_completion(struct ocelot *ocelot)
{
u32 val;
return readx_poll_timeout(ocelot_vlant_read_vlanaccess,
ocelot,
val,
(val & ANA_TABLES_VLANACCESS_VLAN_TBL_CMD_M) ==
ANA_TABLES_VLANACCESS_CMD_IDLE,
TABLE_UPDATE_SLEEP_US, TABLE_UPDATE_TIMEOUT_US);
}
static int ocelot_vlant_set_mask(struct ocelot *ocelot, u16 vid, u32 mask)
{
/* Select the VID to configure */
ocelot_write(ocelot, ANA_TABLES_VLANTIDX_V_INDEX(vid),
ANA_TABLES_VLANTIDX);
/* Set the vlan port members mask and issue a write command */
ocelot_write(ocelot, ANA_TABLES_VLANACCESS_VLAN_PORT_MASK(mask) |
ANA_TABLES_VLANACCESS_CMD_WRITE,
ANA_TABLES_VLANACCESS);
return ocelot_vlant_wait_for_completion(ocelot);
}
static void ocelot_vlan_mode(struct ocelot_port *port,
netdev_features_t features)
{
struct ocelot *ocelot = port->ocelot;
u8 p = port->chip_port;
u32 val;
/* Filtering */
val = ocelot_read(ocelot, ANA_VLANMASK);
if (features & NETIF_F_HW_VLAN_CTAG_FILTER)
val |= BIT(p);
else
val &= ~BIT(p);
ocelot_write(ocelot, val, ANA_VLANMASK);
}
static void ocelot_vlan_port_apply(struct ocelot *ocelot,
struct ocelot_port *port)
{
u32 val;
/* Ingress clasification (ANA_PORT_VLAN_CFG) */
/* Default vlan to clasify for untagged frames (may be zero) */
val = ANA_PORT_VLAN_CFG_VLAN_VID(port->pvid);
if (port->vlan_aware)
val |= ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA |
ANA_PORT_VLAN_CFG_VLAN_POP_CNT(1);
ocelot_rmw_gix(ocelot, val,
ANA_PORT_VLAN_CFG_VLAN_VID_M |
ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA |
ANA_PORT_VLAN_CFG_VLAN_POP_CNT_M,
ANA_PORT_VLAN_CFG, port->chip_port);
/* Drop frames with multicast source address */
val = ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA;
if (port->vlan_aware && !port->vid)
/* If port is vlan-aware and tagged, drop untagged and priority
* tagged frames.
*/
val |= ANA_PORT_DROP_CFG_DROP_UNTAGGED_ENA |
ANA_PORT_DROP_CFG_DROP_PRIO_S_TAGGED_ENA |
ANA_PORT_DROP_CFG_DROP_PRIO_C_TAGGED_ENA;
ocelot_write_gix(ocelot, val, ANA_PORT_DROP_CFG, port->chip_port);
/* Egress configuration (REW_TAG_CFG): VLAN tag type to 8021Q. */
val = REW_TAG_CFG_TAG_TPID_CFG(0);
if (port->vlan_aware) {
if (port->vid)
/* Tag all frames except when VID == DEFAULT_VLAN */
val |= REW_TAG_CFG_TAG_CFG(1);
else
/* Tag all frames */
val |= REW_TAG_CFG_TAG_CFG(3);
}
ocelot_rmw_gix(ocelot, val,
REW_TAG_CFG_TAG_TPID_CFG_M |
REW_TAG_CFG_TAG_CFG_M,
REW_TAG_CFG, port->chip_port);
/* Set default VLAN and tag type to 8021Q. */
val = REW_PORT_VLAN_CFG_PORT_TPID(ETH_P_8021Q) |
REW_PORT_VLAN_CFG_PORT_VID(port->vid);
ocelot_rmw_gix(ocelot, val,
REW_PORT_VLAN_CFG_PORT_TPID_M |
REW_PORT_VLAN_CFG_PORT_VID_M,
REW_PORT_VLAN_CFG, port->chip_port);
}
static int ocelot_vlan_vid_add(struct net_device *dev, u16 vid, bool pvid,
bool untagged)
{
struct ocelot_port *port = netdev_priv(dev);
struct ocelot *ocelot = port->ocelot;
int ret;
/* Add the port MAC address to with the right VLAN information */
ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr, vid,
ENTRYTYPE_LOCKED);
/* Make the port a member of the VLAN */
ocelot->vlan_mask[vid] |= BIT(port->chip_port);
ret = ocelot_vlant_set_mask(ocelot, vid, ocelot->vlan_mask[vid]);
if (ret)
return ret;
/* Default ingress vlan classification */
if (pvid)
port->pvid = vid;
/* Untagged egress vlan clasification */
if (untagged)
port->vid = vid;
ocelot_vlan_port_apply(ocelot, port);
return 0;
}
static int ocelot_vlan_vid_del(struct net_device *dev, u16 vid)
{
struct ocelot_port *port = netdev_priv(dev);
struct ocelot *ocelot = port->ocelot;
int ret;
/* 8021q removes VID 0 on module unload for all interfaces
* with VLAN filtering feature. We need to keep it to receive
* untagged traffic.
*/
if (vid == 0)
return 0;
/* Del the port MAC address to with the right VLAN information */
ocelot_mact_forget(ocelot, dev->dev_addr, vid);
/* Stop the port from being a member of the vlan */
ocelot->vlan_mask[vid] &= ~BIT(port->chip_port);
ret = ocelot_vlant_set_mask(ocelot, vid, ocelot->vlan_mask[vid]);
if (ret)
return ret;
/* Ingress */
if (port->pvid == vid)
port->pvid = 0;
/* Egress */
if (port->vid == vid)
port->vid = 0;
ocelot_vlan_port_apply(ocelot, port);
return 0;
}
static void ocelot_vlan_init(struct ocelot *ocelot)
{
u16 port, vid;
/* Clear VLAN table, by default all ports are members of all VLANs */
ocelot_write(ocelot, ANA_TABLES_VLANACCESS_CMD_INIT,
ANA_TABLES_VLANACCESS);
ocelot_vlant_wait_for_completion(ocelot);
/* Configure the port VLAN memberships */
for (vid = 1; vid < VLAN_N_VID; vid++) {
ocelot->vlan_mask[vid] = 0;
ocelot_vlant_set_mask(ocelot, vid, ocelot->vlan_mask[vid]);
}
/* Because VLAN filtering is enabled, we need VID 0 to get untagged
* traffic. It is added automatically if 8021q module is loaded, but
* we can't rely on it since module may be not loaded.
*/
ocelot->vlan_mask[0] = GENMASK(ocelot->num_phys_ports - 1, 0);
ocelot_vlant_set_mask(ocelot, 0, ocelot->vlan_mask[0]);
/* Configure the CPU port to be VLAN aware */
ocelot_write_gix(ocelot, ANA_PORT_VLAN_CFG_VLAN_VID(0) |
ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA |
ANA_PORT_VLAN_CFG_VLAN_POP_CNT(1),
ANA_PORT_VLAN_CFG, ocelot->num_phys_ports);
/* Set vlan ingress filter mask to all ports but the CPU port by
* default.
*/
ocelot_write(ocelot, GENMASK(9, 0), ANA_VLANMASK);
for (port = 0; port < ocelot->num_phys_ports; port++) {
ocelot_write_gix(ocelot, 0, REW_PORT_VLAN_CFG, port);
ocelot_write_gix(ocelot, 0, REW_TAG_CFG, port);
}
}
/* Watermark encode
* Bit 8: Unit; 0:1, 1:16
* Bit 7-0: Value to be multiplied with unit
*/
static u16 ocelot_wm_enc(u16 value)
{
if (value >= BIT(8))
return BIT(8) | (value / 16);
return value;
}
static void ocelot_port_adjust_link(struct net_device *dev)
{
struct ocelot_port *port = netdev_priv(dev);
struct ocelot *ocelot = port->ocelot;
u8 p = port->chip_port;
int speed, atop_wm, mode = 0;
switch (dev->phydev->speed) {
case SPEED_10:
speed = OCELOT_SPEED_10;
break;
case SPEED_100:
speed = OCELOT_SPEED_100;
break;
case SPEED_1000:
speed = OCELOT_SPEED_1000;
mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA;
break;
case SPEED_2500:
speed = OCELOT_SPEED_2500;
mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA;
break;
default:
netdev_err(dev, "Unsupported PHY speed: %d\n",
dev->phydev->speed);
return;
}
phy_print_status(dev->phydev);
if (!dev->phydev->link)
return;
/* Only full duplex supported for now */
ocelot_port_writel(port, DEV_MAC_MODE_CFG_FDX_ENA |
mode, DEV_MAC_MODE_CFG);
/* Set MAC IFG Gaps
* FDX: TX_IFG = 5, RX_IFG1 = RX_IFG2 = 0
* !FDX: TX_IFG = 5, RX_IFG1 = RX_IFG2 = 5
*/
ocelot_port_writel(port, DEV_MAC_IFG_CFG_TX_IFG(5), DEV_MAC_IFG_CFG);
/* Load seed (0) and set MAC HDX late collision */
ocelot_port_writel(port, DEV_MAC_HDX_CFG_LATE_COL_POS(67) |
DEV_MAC_HDX_CFG_SEED_LOAD,
DEV_MAC_HDX_CFG);
mdelay(1);
ocelot_port_writel(port, DEV_MAC_HDX_CFG_LATE_COL_POS(67),
DEV_MAC_HDX_CFG);
/* Disable HDX fast control */
ocelot_port_writel(port, DEV_PORT_MISC_HDX_FAST_DIS, DEV_PORT_MISC);
/* SGMII only for now */
ocelot_port_writel(port, PCS1G_MODE_CFG_SGMII_MODE_ENA, PCS1G_MODE_CFG);
ocelot_port_writel(port, PCS1G_SD_CFG_SD_SEL, PCS1G_SD_CFG);
/* Enable PCS */
ocelot_port_writel(port, PCS1G_CFG_PCS_ENA, PCS1G_CFG);
/* No aneg on SGMII */
ocelot_port_writel(port, 0, PCS1G_ANEG_CFG);
/* No loopback */
ocelot_port_writel(port, 0, PCS1G_LB_CFG);
/* Set Max Length and maximum tags allowed */
ocelot_port_writel(port, VLAN_ETH_FRAME_LEN, DEV_MAC_MAXLEN_CFG);
ocelot_port_writel(port, DEV_MAC_TAGS_CFG_TAG_ID(ETH_P_8021AD) |
DEV_MAC_TAGS_CFG_VLAN_AWR_ENA |
DEV_MAC_TAGS_CFG_VLAN_LEN_AWR_ENA,
DEV_MAC_TAGS_CFG);
/* Enable MAC module */
ocelot_port_writel(port, DEV_MAC_ENA_CFG_RX_ENA |
DEV_MAC_ENA_CFG_TX_ENA, DEV_MAC_ENA_CFG);
/* Take MAC, Port, Phy (intern) and PCS (SGMII/Serdes) clock out of
* reset */
ocelot_port_writel(port, DEV_CLOCK_CFG_LINK_SPEED(speed),
DEV_CLOCK_CFG);
/* Set SMAC of Pause frame (00:00:00:00:00:00) */
ocelot_port_writel(port, 0, DEV_MAC_FC_MAC_HIGH_CFG);
ocelot_port_writel(port, 0, DEV_MAC_FC_MAC_LOW_CFG);
/* No PFC */
ocelot_write_gix(ocelot, ANA_PFC_PFC_CFG_FC_LINK_SPEED(speed),
ANA_PFC_PFC_CFG, p);
/* Set Pause WM hysteresis
* 152 = 6 * VLAN_ETH_FRAME_LEN / OCELOT_BUFFER_CELL_SZ
* 101 = 4 * VLAN_ETH_FRAME_LEN / OCELOT_BUFFER_CELL_SZ
*/
ocelot_write_rix(ocelot, SYS_PAUSE_CFG_PAUSE_ENA |
SYS_PAUSE_CFG_PAUSE_STOP(101) |
SYS_PAUSE_CFG_PAUSE_START(152), SYS_PAUSE_CFG, p);
/* Core: Enable port for frame transfer */
ocelot_write_rix(ocelot, QSYS_SWITCH_PORT_MODE_INGRESS_DROP_MODE |
QSYS_SWITCH_PORT_MODE_SCH_NEXT_CFG(1) |
QSYS_SWITCH_PORT_MODE_PORT_ENA,
QSYS_SWITCH_PORT_MODE, p);
/* Flow control */
ocelot_write_rix(ocelot, SYS_MAC_FC_CFG_PAUSE_VAL_CFG(0xffff) |
SYS_MAC_FC_CFG_RX_FC_ENA | SYS_MAC_FC_CFG_TX_FC_ENA |
SYS_MAC_FC_CFG_ZERO_PAUSE_ENA |
SYS_MAC_FC_CFG_FC_LATENCY_CFG(0x7) |
SYS_MAC_FC_CFG_FC_LINK_SPEED(speed),
SYS_MAC_FC_CFG, p);
ocelot_write_rix(ocelot, 0, ANA_POL_FLOWC, p);
/* Tail dropping watermark */
atop_wm = (ocelot->shared_queue_sz - 9 * VLAN_ETH_FRAME_LEN) / OCELOT_BUFFER_CELL_SZ;
ocelot_write_rix(ocelot, ocelot_wm_enc(9 * VLAN_ETH_FRAME_LEN),
SYS_ATOP, p);
ocelot_write(ocelot, ocelot_wm_enc(atop_wm), SYS_ATOP_TOT_CFG);
}
static int ocelot_port_open(struct net_device *dev)
{
struct ocelot_port *port = netdev_priv(dev);
struct ocelot *ocelot = port->ocelot;
int err;
/* Enable receiving frames on the port, and activate auto-learning of
* MAC addresses.
*/
ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_LEARNAUTO |
ANA_PORT_PORT_CFG_RECV_ENA |
ANA_PORT_PORT_CFG_PORTID_VAL(port->chip_port),
ANA_PORT_PORT_CFG, port->chip_port);
if (port->serdes) {
err = phy_set_mode_ext(port->serdes, PHY_MODE_ETHERNET,
port->phy_mode);
if (err) {
netdev_err(dev, "Could not set mode of SerDes\n");
return err;
}
}
err = phy_connect_direct(dev, port->phy, &ocelot_port_adjust_link,
port->phy_mode);
if (err) {
netdev_err(dev, "Could not attach to PHY\n");
return err;
}
dev->phydev = port->phy;
phy_attached_info(port->phy);
phy_start(port->phy);
return 0;
}
static int ocelot_port_stop(struct net_device *dev)
{
struct ocelot_port *port = netdev_priv(dev);
phy_disconnect(port->phy);
dev->phydev = NULL;
ocelot_port_writel(port, 0, DEV_MAC_ENA_CFG);
ocelot_rmw_rix(port->ocelot, 0, QSYS_SWITCH_PORT_MODE_PORT_ENA,
QSYS_SWITCH_PORT_MODE, port->chip_port);
return 0;
}
/* Generate the IFH for frame injection
*
* The IFH is a 128bit-value
* bit 127: bypass the analyzer processing
* bit 56-67: destination mask
* bit 28-29: pop_cnt: 3 disables all rewriting of the frame
* bit 20-27: cpu extraction queue mask
* bit 16: tag type 0: C-tag, 1: S-tag
* bit 0-11: VID
*/
static int ocelot_gen_ifh(u32 *ifh, struct frame_info *info)
{
ifh[0] = IFH_INJ_BYPASS;
ifh[1] = (0xf00 & info->port) >> 8;
ifh[2] = (0xff & info->port) << 24;
ifh[3] = (info->tag_type << 16) | info->vid;
return 0;
}
static int ocelot_port_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct ocelot_port *port = netdev_priv(dev);
struct ocelot *ocelot = port->ocelot;
u32 val, ifh[IFH_LEN];
struct frame_info info = {};
u8 grp = 0; /* Send everything on CPU group 0 */
unsigned int i, count, last;
val = ocelot_read(ocelot, QS_INJ_STATUS);
if (!(val & QS_INJ_STATUS_FIFO_RDY(BIT(grp))) ||
(val & QS_INJ_STATUS_WMARK_REACHED(BIT(grp))))
return NETDEV_TX_BUSY;
ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) |
QS_INJ_CTRL_SOF, QS_INJ_CTRL, grp);
info.port = BIT(port->chip_port);
info.tag_type = IFH_TAG_TYPE_C;
info.vid = skb_vlan_tag_get(skb);
ocelot_gen_ifh(ifh, &info);
for (i = 0; i < IFH_LEN; i++)
ocelot_write_rix(ocelot, (__force u32)cpu_to_be32(ifh[i]),
QS_INJ_WR, grp);
count = (skb->len + 3) / 4;
last = skb->len % 4;
for (i = 0; i < count; i++) {
ocelot_write_rix(ocelot, ((u32 *)skb->data)[i], QS_INJ_WR, grp);
}
/* Add padding */
while (i < (OCELOT_BUFFER_CELL_SZ / 4)) {
ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp);
i++;
}
/* Indicate EOF and valid bytes in last word */
ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) |
QS_INJ_CTRL_VLD_BYTES(skb->len < OCELOT_BUFFER_CELL_SZ ? 0 : last) |
QS_INJ_CTRL_EOF,
QS_INJ_CTRL, grp);
/* Add dummy CRC */
ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp);
skb_tx_timestamp(skb);
dev->stats.tx_packets++;
dev->stats.tx_bytes += skb->len;
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
static void ocelot_mact_mc_reset(struct ocelot_port *port)
{
struct ocelot *ocelot = port->ocelot;
struct netdev_hw_addr *ha, *n;
/* Free and forget all the MAC addresses stored in the port private mc
* list. These are mc addresses that were previously added by calling
* ocelot_mact_mc_add().
*/
list_for_each_entry_safe(ha, n, &port->mc, list) {
ocelot_mact_forget(ocelot, ha->addr, port->pvid);
list_del(&ha->list);
kfree(ha);
}
}
static int ocelot_mact_mc_add(struct ocelot_port *port,
struct netdev_hw_addr *hw_addr)
{
struct ocelot *ocelot = port->ocelot;
struct netdev_hw_addr *ha = kzalloc(sizeof(*ha), GFP_ATOMIC);
if (!ha)
return -ENOMEM;
memcpy(ha, hw_addr, sizeof(*ha));
list_add_tail(&ha->list, &port->mc);
ocelot_mact_learn(ocelot, PGID_CPU, ha->addr, port->pvid,
ENTRYTYPE_LOCKED);
return 0;
}
static void ocelot_set_rx_mode(struct net_device *dev)
{
struct ocelot_port *port = netdev_priv(dev);
struct ocelot *ocelot = port->ocelot;
struct netdev_hw_addr *ha;
int i;
u32 val;
/* This doesn't handle promiscuous mode because the bridge core is
* setting IFF_PROMISC on all slave interfaces and all frames would be
* forwarded to the CPU port.
*/
val = GENMASK(ocelot->num_phys_ports - 1, 0);
for (i = ocelot->num_phys_ports + 1; i < PGID_CPU; i++)
ocelot_write_rix(ocelot, val, ANA_PGID_PGID, i);
/* Handle the device multicast addresses. First remove all the
* previously installed addresses and then add the latest ones to the
* mac table.
*/
ocelot_mact_mc_reset(port);
netdev_for_each_mc_addr(ha, dev)
ocelot_mact_mc_add(port, ha);
}
static int ocelot_port_get_phys_port_name(struct net_device *dev,
char *buf, size_t len)
{
struct ocelot_port *port = netdev_priv(dev);
int ret;
ret = snprintf(buf, len, "p%d", port->chip_port);
if (ret >= len)
return -EINVAL;
return 0;
}
static int ocelot_port_set_mac_address(struct net_device *dev, void *p)
{
struct ocelot_port *port = netdev_priv(dev);
struct ocelot *ocelot = port->ocelot;
const struct sockaddr *addr = p;
/* Learn the new net device MAC address in the mac table. */
ocelot_mact_learn(ocelot, PGID_CPU, addr->sa_data, port->pvid,
ENTRYTYPE_LOCKED);
/* Then forget the previous one. */
ocelot_mact_forget(ocelot, dev->dev_addr, port->pvid);
ether_addr_copy(dev->dev_addr, addr->sa_data);
return 0;
}
static void ocelot_get_stats64(struct net_device *dev,
struct rtnl_link_stats64 *stats)
{
struct ocelot_port *port = netdev_priv(dev);
struct ocelot *ocelot = port->ocelot;
/* Configure the port to read the stats from */
ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port->chip_port),
SYS_STAT_CFG);
/* Get Rx stats */
stats->rx_bytes = ocelot_read(ocelot, SYS_COUNT_RX_OCTETS);
stats->rx_packets = ocelot_read(ocelot, SYS_COUNT_RX_SHORTS) +
ocelot_read(ocelot, SYS_COUNT_RX_FRAGMENTS) +
ocelot_read(ocelot, SYS_COUNT_RX_JABBERS) +
ocelot_read(ocelot, SYS_COUNT_RX_LONGS) +
ocelot_read(ocelot, SYS_COUNT_RX_64) +
ocelot_read(ocelot, SYS_COUNT_RX_65_127) +
ocelot_read(ocelot, SYS_COUNT_RX_128_255) +
ocelot_read(ocelot, SYS_COUNT_RX_256_1023) +
ocelot_read(ocelot, SYS_COUNT_RX_1024_1526) +
ocelot_read(ocelot, SYS_COUNT_RX_1527_MAX);
stats->multicast = ocelot_read(ocelot, SYS_COUNT_RX_MULTICAST);
stats->rx_dropped = dev->stats.rx_dropped;
/* Get Tx stats */
stats->tx_bytes = ocelot_read(ocelot, SYS_COUNT_TX_OCTETS);
stats->tx_packets = ocelot_read(ocelot, SYS_COUNT_TX_64) +
ocelot_read(ocelot, SYS_COUNT_TX_65_127) +
ocelot_read(ocelot, SYS_COUNT_TX_128_511) +
ocelot_read(ocelot, SYS_COUNT_TX_512_1023) +
ocelot_read(ocelot, SYS_COUNT_TX_1024_1526) +
ocelot_read(ocelot, SYS_COUNT_TX_1527_MAX);
stats->tx_dropped = ocelot_read(ocelot, SYS_COUNT_TX_DROPS) +
ocelot_read(ocelot, SYS_COUNT_TX_AGING);
stats->collisions = ocelot_read(ocelot, SYS_COUNT_TX_COLLISION);
}
static int ocelot_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
struct net_device *dev, const unsigned char *addr,
u16 vid, u16 flags,
struct netlink_ext_ack *extack)
{
struct ocelot_port *port = netdev_priv(dev);
struct ocelot *ocelot = port->ocelot;
if (!vid) {
if (!port->vlan_aware)
/* If the bridge is not VLAN aware and no VID was
* provided, set it to pvid to ensure the MAC entry
* matches incoming untagged packets
*/
vid = port->pvid;
else
/* If the bridge is VLAN aware a VID must be provided as
* otherwise the learnt entry wouldn't match any frame.
*/
return -EINVAL;
}
return ocelot_mact_learn(ocelot, port->chip_port, addr, vid,
ENTRYTYPE_LOCKED);
}
static int ocelot_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
struct net_device *dev,
const unsigned char *addr, u16 vid)
{
struct ocelot_port *port = netdev_priv(dev);
struct ocelot *ocelot = port->ocelot;
return ocelot_mact_forget(ocelot, addr, vid);
}
struct ocelot_dump_ctx {
struct net_device *dev;
struct sk_buff *skb;
struct netlink_callback *cb;
int idx;
};
static int ocelot_fdb_do_dump(struct ocelot_mact_entry *entry,
struct ocelot_dump_ctx *dump)
{
u32 portid = NETLINK_CB(dump->cb->skb).portid;
u32 seq = dump->cb->nlh->nlmsg_seq;
struct nlmsghdr *nlh;
struct ndmsg *ndm;
if (dump->idx < dump->cb->args[2])
goto skip;
nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH,
sizeof(*ndm), NLM_F_MULTI);
if (!nlh)
return -EMSGSIZE;
ndm = nlmsg_data(nlh);
ndm->ndm_family = AF_BRIDGE;
ndm->ndm_pad1 = 0;
ndm->ndm_pad2 = 0;
ndm->ndm_flags = NTF_SELF;
ndm->ndm_type = 0;
ndm->ndm_ifindex = dump->dev->ifindex;
ndm->ndm_state = NUD_REACHABLE;
if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, entry->mac))
goto nla_put_failure;
if (entry->vid && nla_put_u16(dump->skb, NDA_VLAN, entry->vid))
goto nla_put_failure;
nlmsg_end(dump->skb, nlh);
skip:
dump->idx++;
return 0;
nla_put_failure:
nlmsg_cancel(dump->skb, nlh);
return -EMSGSIZE;
}
static inline int ocelot_mact_read(struct ocelot_port *port, int row, int col,
struct ocelot_mact_entry *entry)
{
struct ocelot *ocelot = port->ocelot;
char mac[ETH_ALEN];
u32 val, dst, macl, mach;
/* Set row and column to read from */
ocelot_field_write(ocelot, ANA_TABLES_MACTINDX_M_INDEX, row);
ocelot_field_write(ocelot, ANA_TABLES_MACTINDX_BUCKET, col);
/* Issue a read command */
ocelot_write(ocelot,
ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_READ),
ANA_TABLES_MACACCESS);
if (ocelot_mact_wait_for_completion(ocelot))
return -ETIMEDOUT;
/* Read the entry flags */
val = ocelot_read(ocelot, ANA_TABLES_MACACCESS);
if (!(val & ANA_TABLES_MACACCESS_VALID))
return -EINVAL;
/* If the entry read has another port configured as its destination,
* do not report it.
*/
dst = (val & ANA_TABLES_MACACCESS_DEST_IDX_M) >> 3;
if (dst != port->chip_port)
return -EINVAL;
/* Get the entry's MAC address and VLAN id */
macl = ocelot_read(ocelot, ANA_TABLES_MACLDATA);
mach = ocelot_read(ocelot, ANA_TABLES_MACHDATA);
mac[0] = (mach >> 8) & 0xff;
mac[1] = (mach >> 0) & 0xff;
mac[2] = (macl >> 24) & 0xff;
mac[3] = (macl >> 16) & 0xff;
mac[4] = (macl >> 8) & 0xff;
mac[5] = (macl >> 0) & 0xff;
entry->vid = (mach >> 16) & 0xfff;
ether_addr_copy(entry->mac, mac);
return 0;
}
static int ocelot_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
struct net_device *dev,
struct net_device *filter_dev, int *idx)
{
struct ocelot_port *port = netdev_priv(dev);
int i, j, ret = 0;
struct ocelot_dump_ctx dump = {
.dev = dev,
.skb = skb,
.cb = cb,
.idx = *idx,
};
struct ocelot_mact_entry entry;
/* Loop through all the mac tables entries. There are 1024 rows of 4
* entries.
*/
for (i = 0; i < 1024; i++) {
for (j = 0; j < 4; j++) {
ret = ocelot_mact_read(port, i, j, &entry);
/* If the entry is invalid (wrong port, invalid...),
* skip it.
*/
if (ret == -EINVAL)
continue;
else if (ret)
goto end;
ret = ocelot_fdb_do_dump(&entry, &dump);
if (ret)
goto end;
}
}
end:
*idx = dump.idx;
return ret;
}
static int ocelot_vlan_rx_add_vid(struct net_device *dev, __be16 proto,
u16 vid)
{
return ocelot_vlan_vid_add(dev, vid, false, true);
}
static int ocelot_vlan_rx_kill_vid(struct net_device *dev, __be16 proto,
u16 vid)
{
return ocelot_vlan_vid_del(dev, vid);
}
static int ocelot_set_features(struct net_device *dev,
netdev_features_t features)
{
struct ocelot_port *port = netdev_priv(dev);
netdev_features_t changed = dev->features ^ features;
if (changed & NETIF_F_HW_VLAN_CTAG_FILTER)
ocelot_vlan_mode(port, features);
return 0;
}
static int ocelot_get_port_parent_id(struct net_device *dev,
struct netdev_phys_item_id *ppid)
{
struct ocelot_port *ocelot_port = netdev_priv(dev);
struct ocelot *ocelot = ocelot_port->ocelot;
ppid->id_len = sizeof(ocelot->base_mac);
memcpy(&ppid->id, &ocelot->base_mac, ppid->id_len);
return 0;
}
static const struct net_device_ops ocelot_port_netdev_ops = {
.ndo_open = ocelot_port_open,
.ndo_stop = ocelot_port_stop,
.ndo_start_xmit = ocelot_port_xmit,
.ndo_set_rx_mode = ocelot_set_rx_mode,
.ndo_get_phys_port_name = ocelot_port_get_phys_port_name,
.ndo_set_mac_address = ocelot_port_set_mac_address,
.ndo_get_stats64 = ocelot_get_stats64,
.ndo_fdb_add = ocelot_fdb_add,
.ndo_fdb_del = ocelot_fdb_del,
.ndo_fdb_dump = ocelot_fdb_dump,
.ndo_vlan_rx_add_vid = ocelot_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = ocelot_vlan_rx_kill_vid,
.ndo_set_features = ocelot_set_features,
.ndo_get_port_parent_id = ocelot_get_port_parent_id,
};
static void ocelot_get_strings(struct net_device *netdev, u32 sset, u8 *data)
{
struct ocelot_port *port = netdev_priv(netdev);
struct ocelot *ocelot = port->ocelot;
int i;
if (sset != ETH_SS_STATS)
return;
for (i = 0; i < ocelot->num_stats; i++)
memcpy(data + i * ETH_GSTRING_LEN, ocelot->stats_layout[i].name,
ETH_GSTRING_LEN);
}
static void ocelot_update_stats(struct ocelot *ocelot)
{
int i, j;
mutex_lock(&ocelot->stats_lock);
for (i = 0; i < ocelot->num_phys_ports; i++) {
/* Configure the port to read the stats from */
ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(i), SYS_STAT_CFG);
for (j = 0; j < ocelot->num_stats; j++) {
u32 val;
unsigned int idx = i * ocelot->num_stats + j;
val = ocelot_read_rix(ocelot, SYS_COUNT_RX_OCTETS,
ocelot->stats_layout[j].offset);
if (val < (ocelot->stats[idx] & U32_MAX))
ocelot->stats[idx] += (u64)1 << 32;
ocelot->stats[idx] = (ocelot->stats[idx] &
~(u64)U32_MAX) + val;
}
}
mutex_unlock(&ocelot->stats_lock);
}
static void ocelot_check_stats_work(struct work_struct *work)
{
struct delayed_work *del_work = to_delayed_work(work);
struct ocelot *ocelot = container_of(del_work, struct ocelot,
stats_work);
ocelot_update_stats(ocelot);
queue_delayed_work(ocelot->stats_queue, &ocelot->stats_work,
OCELOT_STATS_CHECK_DELAY);
}
static void ocelot_get_ethtool_stats(struct net_device *dev,
struct ethtool_stats *stats, u64 *data)
{
struct ocelot_port *port = netdev_priv(dev);
struct ocelot *ocelot = port->ocelot;
int i;
/* check and update now */
ocelot_update_stats(ocelot);
/* Copy all counters */
for (i = 0; i < ocelot->num_stats; i++)
*data++ = ocelot->stats[port->chip_port * ocelot->num_stats + i];
}
static int ocelot_get_sset_count(struct net_device *dev, int sset)
{
struct ocelot_port *port = netdev_priv(dev);
struct ocelot *ocelot = port->ocelot;
if (sset != ETH_SS_STATS)
return -EOPNOTSUPP;
return ocelot->num_stats;
}
static const struct ethtool_ops ocelot_ethtool_ops = {
.get_strings = ocelot_get_strings,
.get_ethtool_stats = ocelot_get_ethtool_stats,
.get_sset_count = ocelot_get_sset_count,
.get_link_ksettings = phy_ethtool_get_link_ksettings,
.set_link_ksettings = phy_ethtool_set_link_ksettings,
};
static int ocelot_port_attr_stp_state_set(struct ocelot_port *ocelot_port,
struct switchdev_trans *trans,
u8 state)
{
struct ocelot *ocelot = ocelot_port->ocelot;
u32 port_cfg;
int port, i;
if (switchdev_trans_ph_prepare(trans))
return 0;
if (!(BIT(ocelot_port->chip_port) & ocelot->bridge_mask))
return 0;
port_cfg = ocelot_read_gix(ocelot, ANA_PORT_PORT_CFG,
ocelot_port->chip_port);
switch (state) {
case BR_STATE_FORWARDING:
ocelot->bridge_fwd_mask |= BIT(ocelot_port->chip_port);
/* Fallthrough */
case BR_STATE_LEARNING:
port_cfg |= ANA_PORT_PORT_CFG_LEARN_ENA;
break;
default:
port_cfg &= ~ANA_PORT_PORT_CFG_LEARN_ENA;
ocelot->bridge_fwd_mask &= ~BIT(ocelot_port->chip_port);
break;
}
ocelot_write_gix(ocelot, port_cfg, ANA_PORT_PORT_CFG,
ocelot_port->chip_port);
/* Apply FWD mask. The loop is needed to add/remove the current port as
* a source for the other ports.
*/
for (port = 0; port < ocelot->num_phys_ports; port++) {
if (ocelot->bridge_fwd_mask & BIT(port)) {
unsigned long mask = ocelot->bridge_fwd_mask & ~BIT(port);
for (i = 0; i < ocelot->num_phys_ports; i++) {
unsigned long bond_mask = ocelot->lags[i];
if (!bond_mask)
continue;
if (bond_mask & BIT(port)) {
mask &= ~bond_mask;
break;
}
}
ocelot_write_rix(ocelot,
BIT(ocelot->num_phys_ports) | mask,
ANA_PGID_PGID, PGID_SRC + port);
} else {
/* Only the CPU port, this is compatible with link
* aggregation.
*/
ocelot_write_rix(ocelot,
BIT(ocelot->num_phys_ports),
ANA_PGID_PGID, PGID_SRC + port);
}
}
return 0;
}
static void ocelot_port_attr_ageing_set(struct ocelot_port *ocelot_port,
unsigned long ageing_clock_t)
{
struct ocelot *ocelot = ocelot_port->ocelot;
unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
ocelot_write(ocelot, ANA_AUTOAGE_AGE_PERIOD(ageing_time / 2),
ANA_AUTOAGE);
}
static void ocelot_port_attr_mc_set(struct ocelot_port *port, bool mc)
{
struct ocelot *ocelot = port->ocelot;
u32 val = ocelot_read_gix(ocelot, ANA_PORT_CPU_FWD_CFG,
port->chip_port);
if (mc)
val |= ANA_PORT_CPU_FWD_CFG_CPU_IGMP_REDIR_ENA |
ANA_PORT_CPU_FWD_CFG_CPU_MLD_REDIR_ENA |
ANA_PORT_CPU_FWD_CFG_CPU_IPMC_CTRL_COPY_ENA;
else
val &= ~(ANA_PORT_CPU_FWD_CFG_CPU_IGMP_REDIR_ENA |
ANA_PORT_CPU_FWD_CFG_CPU_MLD_REDIR_ENA |
ANA_PORT_CPU_FWD_CFG_CPU_IPMC_CTRL_COPY_ENA);
ocelot_write_gix(ocelot, val, ANA_PORT_CPU_FWD_CFG, port->chip_port);
}
static int ocelot_port_attr_set(struct net_device *dev,
const struct switchdev_attr *attr,
struct switchdev_trans *trans)
{
struct ocelot_port *ocelot_port = netdev_priv(dev);
int err = 0;
switch (attr->id) {
case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
ocelot_port_attr_stp_state_set(ocelot_port, trans,
attr->u.stp_state);
break;
case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
ocelot_port_attr_ageing_set(ocelot_port, attr->u.ageing_time);
break;
case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
ocelot_port->vlan_aware = attr->u.vlan_filtering;
ocelot_vlan_port_apply(ocelot_port->ocelot, ocelot_port);
break;
case SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED:
ocelot_port_attr_mc_set(ocelot_port, !attr->u.mc_disabled);
break;
default:
err = -EOPNOTSUPP;
break;
}
return err;
}
static int ocelot_port_obj_add_vlan(struct net_device *dev,
const struct switchdev_obj_port_vlan *vlan,
struct switchdev_trans *trans)
{
int ret;
u16 vid;
for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
ret = ocelot_vlan_vid_add(dev, vid,
vlan->flags & BRIDGE_VLAN_INFO_PVID,
vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED);
if (ret)
return ret;
}
return 0;
}
static int ocelot_port_vlan_del_vlan(struct net_device *dev,
const struct switchdev_obj_port_vlan *vlan)
{
int ret;
u16 vid;
for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
ret = ocelot_vlan_vid_del(dev, vid);
if (ret)
return ret;
}
return 0;
}
static struct ocelot_multicast *ocelot_multicast_get(struct ocelot *ocelot,
const unsigned char *addr,
u16 vid)
{
struct ocelot_multicast *mc;
list_for_each_entry(mc, &ocelot->multicast, list) {
if (ether_addr_equal(mc->addr, addr) && mc->vid == vid)
return mc;
}
return NULL;
}
static int ocelot_port_obj_add_mdb(struct net_device *dev,
const struct switchdev_obj_port_mdb *mdb,
struct switchdev_trans *trans)
{
struct ocelot_port *port = netdev_priv(dev);
struct ocelot *ocelot = port->ocelot;
struct ocelot_multicast *mc;
unsigned char addr[ETH_ALEN];
u16 vid = mdb->vid;
bool new = false;
if (!vid)
vid = port->pvid;
mc = ocelot_multicast_get(ocelot, mdb->addr, vid);
if (!mc) {
mc = devm_kzalloc(ocelot->dev, sizeof(*mc), GFP_KERNEL);
if (!mc)
return -ENOMEM;
memcpy(mc->addr, mdb->addr, ETH_ALEN);
mc->vid = vid;
list_add_tail(&mc->list, &ocelot->multicast);
new = true;
}
memcpy(addr, mc->addr, ETH_ALEN);
addr[0] = 0;
if (!new) {
addr[2] = mc->ports << 0;
addr[1] = mc->ports << 8;
ocelot_mact_forget(ocelot, addr, vid);
}
mc->ports |= BIT(port->chip_port);
addr[2] = mc->ports << 0;
addr[1] = mc->ports << 8;
return ocelot_mact_learn(ocelot, 0, addr, vid, ENTRYTYPE_MACv4);
}
static int ocelot_port_obj_del_mdb(struct net_device *dev,
const struct switchdev_obj_port_mdb *mdb)
{
struct ocelot_port *port = netdev_priv(dev);
struct ocelot *ocelot = port->ocelot;
struct ocelot_multicast *mc;
unsigned char addr[ETH_ALEN];
u16 vid = mdb->vid;
if (!vid)
vid = port->pvid;
mc = ocelot_multicast_get(ocelot, mdb->addr, vid);
if (!mc)
return -ENOENT;
memcpy(addr, mc->addr, ETH_ALEN);
addr[2] = mc->ports << 0;
addr[1] = mc->ports << 8;
addr[0] = 0;
ocelot_mact_forget(ocelot, addr, vid);
mc->ports &= ~BIT(port->chip_port);
if (!mc->ports) {
list_del(&mc->list);
devm_kfree(ocelot->dev, mc);
return 0;
}
addr[2] = mc->ports << 0;
addr[1] = mc->ports << 8;
return ocelot_mact_learn(ocelot, 0, addr, vid, ENTRYTYPE_MACv4);
}
static int ocelot_port_obj_add(struct net_device *dev,
const struct switchdev_obj *obj,
struct switchdev_trans *trans,
struct netlink_ext_ack *extack)
{
int ret = 0;
switch (obj->id) {
case SWITCHDEV_OBJ_ID_PORT_VLAN:
ret = ocelot_port_obj_add_vlan(dev,
SWITCHDEV_OBJ_PORT_VLAN(obj),
trans);
break;
case SWITCHDEV_OBJ_ID_PORT_MDB:
ret = ocelot_port_obj_add_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj),
trans);
break;
default:
return -EOPNOTSUPP;
}
return ret;
}
static int ocelot_port_obj_del(struct net_device *dev,
const struct switchdev_obj *obj)
{
int ret = 0;
switch (obj->id) {
case SWITCHDEV_OBJ_ID_PORT_VLAN:
ret = ocelot_port_vlan_del_vlan(dev,
SWITCHDEV_OBJ_PORT_VLAN(obj));
break;
case SWITCHDEV_OBJ_ID_PORT_MDB:
ret = ocelot_port_obj_del_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj));
break;
default:
return -EOPNOTSUPP;
}
return ret;
}
static int ocelot_port_bridge_join(struct ocelot_port *ocelot_port,
struct net_device *bridge)
{
struct ocelot *ocelot = ocelot_port->ocelot;
if (!ocelot->bridge_mask) {
ocelot->hw_bridge_dev = bridge;
} else {
if (ocelot->hw_bridge_dev != bridge)
/* This is adding the port to a second bridge, this is
* unsupported */
return -ENODEV;
}
ocelot->bridge_mask |= BIT(ocelot_port->chip_port);
return 0;
}
static void ocelot_port_bridge_leave(struct ocelot_port *ocelot_port,
struct net_device *bridge)
{
struct ocelot *ocelot = ocelot_port->ocelot;
ocelot->bridge_mask &= ~BIT(ocelot_port->chip_port);
if (!ocelot->bridge_mask)
ocelot->hw_bridge_dev = NULL;
/* Clear bridge vlan settings before calling ocelot_vlan_port_apply */
ocelot_port->vlan_aware = 0;
ocelot_port->pvid = 0;
ocelot_port->vid = 0;
}
static void ocelot_set_aggr_pgids(struct ocelot *ocelot)
{
int i, port, lag;
/* Reset destination and aggregation PGIDS */
for (port = 0; port < ocelot->num_phys_ports; port++)
ocelot_write_rix(ocelot, BIT(port), ANA_PGID_PGID, port);
for (i = PGID_AGGR; i < PGID_SRC; i++)
ocelot_write_rix(ocelot, GENMASK(ocelot->num_phys_ports - 1, 0),
ANA_PGID_PGID, i);
/* Now, set PGIDs for each LAG */
for (lag = 0; lag < ocelot->num_phys_ports; lag++) {
unsigned long bond_mask;
int aggr_count = 0;
u8 aggr_idx[16];
bond_mask = ocelot->lags[lag];
if (!bond_mask)
continue;
for_each_set_bit(port, &bond_mask, ocelot->num_phys_ports) {
// Destination mask
ocelot_write_rix(ocelot, bond_mask,
ANA_PGID_PGID, port);
aggr_idx[aggr_count] = port;
aggr_count++;
}
for (i = PGID_AGGR; i < PGID_SRC; i++) {
u32 ac;
ac = ocelot_read_rix(ocelot, ANA_PGID_PGID, i);
ac &= ~bond_mask;
ac |= BIT(aggr_idx[i % aggr_count]);
ocelot_write_rix(ocelot, ac, ANA_PGID_PGID, i);
}
}
}
static void ocelot_setup_lag(struct ocelot *ocelot, int lag)
{
unsigned long bond_mask = ocelot->lags[lag];
unsigned int p;
for_each_set_bit(p, &bond_mask, ocelot->num_phys_ports) {
u32 port_cfg = ocelot_read_gix(ocelot, ANA_PORT_PORT_CFG, p);
port_cfg &= ~ANA_PORT_PORT_CFG_PORTID_VAL_M;
/* Use lag port as logical port for port i */
ocelot_write_gix(ocelot, port_cfg |
ANA_PORT_PORT_CFG_PORTID_VAL(lag),
ANA_PORT_PORT_CFG, p);
}
}
static int ocelot_port_lag_join(struct ocelot_port *ocelot_port,
struct net_device *bond)
{
struct ocelot *ocelot = ocelot_port->ocelot;
int p = ocelot_port->chip_port;
int lag, lp;
struct net_device *ndev;
u32 bond_mask = 0;
rcu_read_lock();
for_each_netdev_in_bond_rcu(bond, ndev) {
struct ocelot_port *port = netdev_priv(ndev);
bond_mask |= BIT(port->chip_port);
}
rcu_read_unlock();
lp = __ffs(bond_mask);
/* If the new port is the lowest one, use it as the logical port from
* now on
*/
if (p == lp) {
lag = p;
ocelot->lags[p] = bond_mask;
bond_mask &= ~BIT(p);
if (bond_mask) {
lp = __ffs(bond_mask);
ocelot->lags[lp] = 0;
}
} else {
lag = lp;
ocelot->lags[lp] |= BIT(p);
}
ocelot_setup_lag(ocelot, lag);
ocelot_set_aggr_pgids(ocelot);
return 0;
}
static void ocelot_port_lag_leave(struct ocelot_port *ocelot_port,
struct net_device *bond)
{
struct ocelot *ocelot = ocelot_port->ocelot;
int p = ocelot_port->chip_port;
u32 port_cfg;
int i;
/* Remove port from any lag */
for (i = 0; i < ocelot->num_phys_ports; i++)
ocelot->lags[i] &= ~BIT(ocelot_port->chip_port);
/* if it was the logical port of the lag, move the lag config to the
* next port
*/
if (ocelot->lags[p]) {
int n = __ffs(ocelot->lags[p]);
ocelot->lags[n] = ocelot->lags[p];
ocelot->lags[p] = 0;
ocelot_setup_lag(ocelot, n);
}
port_cfg = ocelot_read_gix(ocelot, ANA_PORT_PORT_CFG, p);
port_cfg &= ~ANA_PORT_PORT_CFG_PORTID_VAL_M;
ocelot_write_gix(ocelot, port_cfg | ANA_PORT_PORT_CFG_PORTID_VAL(p),
ANA_PORT_PORT_CFG, p);
ocelot_set_aggr_pgids(ocelot);
}
/* Checks if the net_device instance given to us originate from our driver. */
static bool ocelot_netdevice_dev_check(const struct net_device *dev)
{
return dev->netdev_ops == &ocelot_port_netdev_ops;
}
static int ocelot_netdevice_port_event(struct net_device *dev,
unsigned long event,
struct netdev_notifier_changeupper_info *info)
{
struct ocelot_port *ocelot_port = netdev_priv(dev);
int err = 0;
if (!ocelot_netdevice_dev_check(dev))
return 0;
switch (event) {
case NETDEV_CHANGEUPPER:
if (netif_is_bridge_master(info->upper_dev)) {
if (info->linking)
err = ocelot_port_bridge_join(ocelot_port,
info->upper_dev);
else
ocelot_port_bridge_leave(ocelot_port,
info->upper_dev);
ocelot_vlan_port_apply(ocelot_port->ocelot,
ocelot_port);
}
if (netif_is_lag_master(info->upper_dev)) {
if (info->linking)
err = ocelot_port_lag_join(ocelot_port,
info->upper_dev);
else
ocelot_port_lag_leave(ocelot_port,
info->upper_dev);
}
break;
default:
break;
}
return err;
}
static int ocelot_netdevice_event(struct notifier_block *unused,
unsigned long event, void *ptr)
{
struct netdev_notifier_changeupper_info *info = ptr;
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
int ret = 0;
if (event == NETDEV_PRECHANGEUPPER &&
netif_is_lag_master(info->upper_dev)) {
struct netdev_lag_upper_info *lag_upper_info = info->upper_info;
struct netlink_ext_ack *extack;
if (lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH) {
extack = netdev_notifier_info_to_extack(&info->info);
NL_SET_ERR_MSG_MOD(extack, "LAG device using unsupported Tx type");
ret = -EINVAL;
goto notify;
}
}
if (netif_is_lag_master(dev)) {
struct net_device *slave;
struct list_head *iter;
netdev_for_each_lower_dev(dev, slave, iter) {
ret = ocelot_netdevice_port_event(slave, event, info);
if (ret)
goto notify;
}
} else {
ret = ocelot_netdevice_port_event(dev, event, info);
}
notify:
return notifier_from_errno(ret);
}
struct notifier_block ocelot_netdevice_nb __read_mostly = {
.notifier_call = ocelot_netdevice_event,
};
EXPORT_SYMBOL(ocelot_netdevice_nb);
static int ocelot_switchdev_event(struct notifier_block *unused,
unsigned long event, void *ptr)
{
struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
int err;
switch (event) {
case SWITCHDEV_PORT_ATTR_SET:
err = switchdev_handle_port_attr_set(dev, ptr,
ocelot_netdevice_dev_check,
ocelot_port_attr_set);
return notifier_from_errno(err);
}
return NOTIFY_DONE;
}
struct notifier_block ocelot_switchdev_nb __read_mostly = {
.notifier_call = ocelot_switchdev_event,
};
EXPORT_SYMBOL(ocelot_switchdev_nb);
static int ocelot_switchdev_blocking_event(struct notifier_block *unused,
unsigned long event, void *ptr)
{
struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
int err;
switch (event) {
/* Blocking events. */
case SWITCHDEV_PORT_OBJ_ADD:
err = switchdev_handle_port_obj_add(dev, ptr,
ocelot_netdevice_dev_check,
ocelot_port_obj_add);
return notifier_from_errno(err);
case SWITCHDEV_PORT_OBJ_DEL:
err = switchdev_handle_port_obj_del(dev, ptr,
ocelot_netdevice_dev_check,
ocelot_port_obj_del);
return notifier_from_errno(err);
case SWITCHDEV_PORT_ATTR_SET:
err = switchdev_handle_port_attr_set(dev, ptr,
ocelot_netdevice_dev_check,
ocelot_port_attr_set);
return notifier_from_errno(err);
}
return NOTIFY_DONE;
}
struct notifier_block ocelot_switchdev_blocking_nb __read_mostly = {
.notifier_call = ocelot_switchdev_blocking_event,
};
EXPORT_SYMBOL(ocelot_switchdev_blocking_nb);
int ocelot_probe_port(struct ocelot *ocelot, u8 port,
void __iomem *regs,
struct phy_device *phy)
{
struct ocelot_port *ocelot_port;
struct net_device *dev;
int err;
dev = alloc_etherdev(sizeof(struct ocelot_port));
if (!dev)
return -ENOMEM;
SET_NETDEV_DEV(dev, ocelot->dev);
ocelot_port = netdev_priv(dev);
ocelot_port->dev = dev;
ocelot_port->ocelot = ocelot;
ocelot_port->regs = regs;
ocelot_port->chip_port = port;
ocelot_port->phy = phy;
INIT_LIST_HEAD(&ocelot_port->mc);
ocelot->ports[port] = ocelot_port;
dev->netdev_ops = &ocelot_port_netdev_ops;
dev->ethtool_ops = &ocelot_ethtool_ops;
dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_RXFCS;
dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
memcpy(dev->dev_addr, ocelot->base_mac, ETH_ALEN);
dev->dev_addr[ETH_ALEN - 1] += port;
ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr, ocelot_port->pvid,
ENTRYTYPE_LOCKED);
err = register_netdev(dev);
if (err) {
dev_err(ocelot->dev, "register_netdev failed\n");
goto err_register_netdev;
}
/* Basic L2 initialization */
ocelot_vlan_port_apply(ocelot, ocelot_port);
return 0;
err_register_netdev:
free_netdev(dev);
return err;
}
EXPORT_SYMBOL(ocelot_probe_port);
int ocelot_init(struct ocelot *ocelot)
{
u32 port;
int i, cpu = ocelot->num_phys_ports;
char queue_name[32];
ocelot->lags = devm_kcalloc(ocelot->dev, ocelot->num_phys_ports,
sizeof(u32), GFP_KERNEL);
if (!ocelot->lags)
return -ENOMEM;
ocelot->stats = devm_kcalloc(ocelot->dev,
ocelot->num_phys_ports * ocelot->num_stats,
sizeof(u64), GFP_KERNEL);
if (!ocelot->stats)
return -ENOMEM;
mutex_init(&ocelot->stats_lock);
snprintf(queue_name, sizeof(queue_name), "%s-stats",
dev_name(ocelot->dev));
ocelot->stats_queue = create_singlethread_workqueue(queue_name);
if (!ocelot->stats_queue)
return -ENOMEM;
ocelot_mact_init(ocelot);
ocelot_vlan_init(ocelot);
for (port = 0; port < ocelot->num_phys_ports; port++) {
/* Clear all counters (5 groups) */
ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port) |
SYS_STAT_CFG_STAT_CLEAR_SHOT(0x7f),
SYS_STAT_CFG);
}
/* Only use S-Tag */
ocelot_write(ocelot, ETH_P_8021AD, SYS_VLAN_ETYPE_CFG);
/* Aggregation mode */
ocelot_write(ocelot, ANA_AGGR_CFG_AC_SMAC_ENA |
ANA_AGGR_CFG_AC_DMAC_ENA |
ANA_AGGR_CFG_AC_IP4_SIPDIP_ENA |
ANA_AGGR_CFG_AC_IP4_TCPUDP_ENA, ANA_AGGR_CFG);
/* Set MAC age time to default value. The entry is aged after
* 2*AGE_PERIOD
*/
ocelot_write(ocelot,
ANA_AUTOAGE_AGE_PERIOD(BR_DEFAULT_AGEING_TIME / 2 / HZ),
ANA_AUTOAGE);
/* Disable learning for frames discarded by VLAN ingress filtering */
regmap_field_write(ocelot->regfields[ANA_ADVLEARN_VLAN_CHK], 1);
/* Setup frame ageing - fixed value "2 sec" - in 6.5 us units */
ocelot_write(ocelot, SYS_FRM_AGING_AGE_TX_ENA |
SYS_FRM_AGING_MAX_AGE(307692), SYS_FRM_AGING);
/* Setup flooding PGIDs */
ocelot_write_rix(ocelot, ANA_FLOODING_FLD_MULTICAST(PGID_MC) |
ANA_FLOODING_FLD_BROADCAST(PGID_MC) |
ANA_FLOODING_FLD_UNICAST(PGID_UC),
ANA_FLOODING, 0);
ocelot_write(ocelot, ANA_FLOODING_IPMC_FLD_MC6_DATA(PGID_MCIPV6) |
ANA_FLOODING_IPMC_FLD_MC6_CTRL(PGID_MC) |
ANA_FLOODING_IPMC_FLD_MC4_DATA(PGID_MCIPV4) |
ANA_FLOODING_IPMC_FLD_MC4_CTRL(PGID_MC),
ANA_FLOODING_IPMC);
for (port = 0; port < ocelot->num_phys_ports; port++) {
/* Transmit the frame to the local port. */
ocelot_write_rix(ocelot, BIT(port), ANA_PGID_PGID, port);
/* Do not forward BPDU frames to the front ports. */
ocelot_write_gix(ocelot,
ANA_PORT_CPU_FWD_BPDU_CFG_BPDU_REDIR_ENA(0xffff),
ANA_PORT_CPU_FWD_BPDU_CFG,
port);
/* Ensure bridging is disabled */
ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_SRC + port);
}
/* Configure and enable the CPU port. */
ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, cpu);
ocelot_write_rix(ocelot, BIT(cpu), ANA_PGID_PGID, PGID_CPU);
ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_RECV_ENA |
ANA_PORT_PORT_CFG_PORTID_VAL(cpu),
ANA_PORT_PORT_CFG, cpu);
/* Allow broadcast MAC frames. */
for (i = ocelot->num_phys_ports + 1; i < PGID_CPU; i++) {
u32 val = ANA_PGID_PGID_PGID(GENMASK(ocelot->num_phys_ports - 1, 0));
ocelot_write_rix(ocelot, val, ANA_PGID_PGID, i);
}
ocelot_write_rix(ocelot,
ANA_PGID_PGID_PGID(GENMASK(ocelot->num_phys_ports, 0)),
ANA_PGID_PGID, PGID_MC);
ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_MCIPV4);
ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_MCIPV6);
/* CPU port Injection/Extraction configuration */
ocelot_write_rix(ocelot, QSYS_SWITCH_PORT_MODE_INGRESS_DROP_MODE |
QSYS_SWITCH_PORT_MODE_SCH_NEXT_CFG(1) |
QSYS_SWITCH_PORT_MODE_PORT_ENA,
QSYS_SWITCH_PORT_MODE, cpu);
ocelot_write_rix(ocelot, SYS_PORT_MODE_INCL_XTR_HDR(1) |
SYS_PORT_MODE_INCL_INJ_HDR(1), SYS_PORT_MODE, cpu);
/* Allow manual injection via DEVCPU_QS registers, and byte swap these
* registers endianness.
*/
ocelot_write_rix(ocelot, QS_INJ_GRP_CFG_BYTE_SWAP |
QS_INJ_GRP_CFG_MODE(1), QS_INJ_GRP_CFG, 0);
ocelot_write_rix(ocelot, QS_XTR_GRP_CFG_BYTE_SWAP |
QS_XTR_GRP_CFG_MODE(1), QS_XTR_GRP_CFG, 0);
ocelot_write(ocelot, ANA_CPUQ_CFG_CPUQ_MIRROR(2) |
ANA_CPUQ_CFG_CPUQ_LRN(2) |
ANA_CPUQ_CFG_CPUQ_MAC_COPY(2) |
ANA_CPUQ_CFG_CPUQ_SRC_COPY(2) |
ANA_CPUQ_CFG_CPUQ_LOCKED_PORTMOVE(2) |
ANA_CPUQ_CFG_CPUQ_ALLBRIDGE(6) |
ANA_CPUQ_CFG_CPUQ_IPMC_CTRL(6) |
ANA_CPUQ_CFG_CPUQ_IGMP(6) |
ANA_CPUQ_CFG_CPUQ_MLD(6), ANA_CPUQ_CFG);
for (i = 0; i < 16; i++)
ocelot_write_rix(ocelot, ANA_CPUQ_8021_CFG_CPUQ_GARP_VAL(6) |
ANA_CPUQ_8021_CFG_CPUQ_BPDU_VAL(6),
ANA_CPUQ_8021_CFG, i);
INIT_DELAYED_WORK(&ocelot->stats_work, ocelot_check_stats_work);
queue_delayed_work(ocelot->stats_queue, &ocelot->stats_work,
OCELOT_STATS_CHECK_DELAY);
return 0;
}
EXPORT_SYMBOL(ocelot_init);
void ocelot_deinit(struct ocelot *ocelot)
{
destroy_workqueue(ocelot->stats_queue);
mutex_destroy(&ocelot->stats_lock);
}
EXPORT_SYMBOL(ocelot_deinit);
MODULE_LICENSE("Dual MIT/GPL");
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