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-rw-r--r--drivers/net/dsa/b53/b53_common.c162
-rw-r--r--drivers/net/dsa/b53/b53_priv.h3
-rw-r--r--drivers/net/dsa/b53/b53_regs.h12
3 files changed, 174 insertions, 3 deletions
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index a9f1de407f57..ad1d68272016 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -27,6 +27,7 @@
#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>
@@ -339,12 +340,12 @@ static int b53_set_jumbo(struct b53_device *dev, bool enable, bool allow_10_100)
return b53_write16(dev, B53_JUMBO_PAGE, dev->jumbo_size_reg, max_size);
}
-static int b53_flush_arl(struct b53_device *dev)
+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 | FAST_AGE_STATIC);
+ FAST_AGE_DONE | FAST_AGE_DYNAMIC | mask);
for (i = 0; i < 10; i++) {
u8 fast_age_ctrl;
@@ -365,14 +366,52 @@ out:
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 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;
}
@@ -482,7 +521,7 @@ static int b53_switch_reset(struct b53_device *dev)
b53_enable_mib(dev);
- return b53_flush_arl(dev);
+ return b53_flush_arl(dev, FAST_AGE_STATIC);
}
static int b53_phy_read16(struct dsa_switch *ds, int addr, int reg)
@@ -1019,6 +1058,120 @@ static int b53_fdb_dump(struct dsa_switch *ds, int port,
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;
+ unsigned int i;
+ u16 pvlan, reg;
+
+ 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;
+}
+
+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,
@@ -1031,6 +1184,9 @@ static struct dsa_switch_driver b53_switch_ops = {
.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_fdb_prepare = b53_fdb_prepare,
.port_fdb_dump = b53_fdb_dump,
.port_fdb_add = b53_fdb_add,
diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h
index 1ee4e8016642..c19842960f28 100644
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -27,6 +27,7 @@
#include "b53_regs.h"
struct b53_device;
+struct net_device;
struct b53_io_ops {
int (*read8)(struct b53_device *dev, u8 page, u8 reg, u8 *value);
@@ -64,6 +65,8 @@ enum {
#define B53_N_PORTS_25 6
struct b53_port {
+ u16 vlan_ctl_mask;
+ struct net_device *bridge_dev;
};
struct b53_device {
diff --git a/drivers/net/dsa/b53/b53_regs.h b/drivers/net/dsa/b53/b53_regs.h
index 441d2b4121c4..8f12bddd5dc9 100644
--- a/drivers/net/dsa/b53/b53_regs.h
+++ b/drivers/net/dsa/b53/b53_regs.h
@@ -65,6 +65,12 @@
#define PORT_CTRL_RX_MCST_EN BIT(3) /* Multicast RX (P8 only) */
#define PORT_CTRL_RX_UCST_EN BIT(4) /* Unicast RX (P8 only) */
#define PORT_CTRL_STP_STATE_S 5
+#define PORT_CTRL_NO_STP (0 << PORT_CTRL_STP_STATE_S)
+#define PORT_CTRL_DIS_STATE (1 << PORT_CTRL_STP_STATE_S)
+#define PORT_CTRL_BLOCK_STATE (2 << PORT_CTRL_STP_STATE_S)
+#define PORT_CTRL_LISTEN_STATE (3 << PORT_CTRL_STP_STATE_S)
+#define PORT_CTRL_LEARN_STATE (4 << PORT_CTRL_STP_STATE_S)
+#define PORT_CTRL_FWD_STATE (5 << PORT_CTRL_STP_STATE_S)
#define PORT_CTRL_STP_STATE_MASK (0x7 << PORT_CTRL_STP_STATE_S)
/* SMP Control Register (8 bit) */
@@ -145,6 +151,12 @@
#define FAST_AGE_MC BIT(5)
#define FAST_AGE_DONE BIT(7)
+/* Fast Aging Port Control register (8 bit) */
+#define B53_FAST_AGE_PORT_CTRL 0x89
+
+/* Fast Aging VID Control register (16 bit) */
+#define B53_FAST_AGE_VID_CTRL 0x8a
+
/*************************************************************************
* Status Page registers
*************************************************************************/
generated by cgit v1.2.3 (git 2.39.0) at 2024-10-08 22:05:32 +0300