#include <linux/module.h>
#include <linux/platform_data/b53.h>
#include <linux/phy.h>
+#include <linux/etherdevice.h>
#include <net/dsa.h>
+#include <net/switchdev.h>
#include "b53_regs.h"
#include "b53_priv.h"
}
}
+/* 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, ®);
+ 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 |= 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, ®);
+ 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 struct dsa_switch_driver b53_switch_ops = {
.tag_protocol = DSA_TAG_PROTO_NONE,
.setup = b53_setup,
.adjust_link = b53_adjust_link,
.port_enable = b53_enable_port,
.port_disable = b53_disable_port,
+ .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 {
u16 enabled_ports;
u8 cpu_port;
u8 vta_regs[3];
+ u8 arl_entries;
u8 duplex_reg;
u8 jumbo_pm_reg;
u8 jumbo_size_reg;
.dev_name = "BCM5325",
.vlans = 16,
.enabled_ports = 0x1f,
+ .arl_entries = 2,
.cpu_port = B53_CPU_PORT_25,
.duplex_reg = B53_DUPLEX_STAT_FE,
},
.dev_name = "BCM5365",
.vlans = 256,
.enabled_ports = 0x1f,
+ .arl_entries = 2,
.cpu_port = B53_CPU_PORT_25,
.duplex_reg = B53_DUPLEX_STAT_FE,
},
.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,
.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,
.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,
.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,
.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,
.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,
.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,
.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,
.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,
.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,
.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,
ds->drv = &b53_switch_ops;
dev->cpu_port = chip->cpu_port;
dev->num_vlans = chip->vlans;
+ dev->num_arl_entries = chip->arl_entries;
break;
}
}
#define VTE_UNTAG_S 9
#define VTE_UNTAG (0x1ff << 9)
+/*************************************************************************
+ * ARL I/O Registers
+ *************************************************************************/
+
+/* ARL Table Read/Write Register (8 bit) */
+#define B53_ARLTBL_RW_CTRL 0x00
+#define ARLTBL_RW BIT(0)
+#define ARLTBL_START_DONE BIT(7)
+
+/* MAC Address Index Register (48 bit) */
+#define B53_MAC_ADDR_IDX 0x02
+
+/* VLAN ID Index Register (16 bit) */
+#define B53_VLAN_ID_IDX 0x08
+
+/* ARL Table MAC/VID Entry N Registers (64 bit)
+ *
+ * BCM5325 and BCM5365 share most definitions below
+ */
+#define B53_ARLTBL_MAC_VID_ENTRY(n) (0x10 * (n))
+#define ARLTBL_MAC_MASK 0xffffffffffff
+#define ARLTBL_VID_S 48
+#define ARLTBL_VID_MASK_25 0xff
+#define ARLTBL_VID_MASK 0xfff
+#define ARLTBL_DATA_PORT_ID_S_25 48
+#define ARLTBL_DATA_PORT_ID_MASK_25 0xf
+#define ARLTBL_AGE_25 BIT(61)
+#define ARLTBL_STATIC_25 BIT(62)
+#define ARLTBL_VALID_25 BIT(63)
+
+/* ARL Table Data Entry N Registers (32 bit) */
+#define B53_ARLTBL_DATA_ENTRY(n) ((0x10 * (n)) + 0x08)
+#define ARLTBL_DATA_PORT_ID_MASK 0x1ff
+#define ARLTBL_TC(tc) ((3 & tc) << 11)
+#define ARLTBL_AGE BIT(14)
+#define ARLTBL_STATIC BIT(15)
+#define ARLTBL_VALID BIT(16)
+
+/* ARL Search Control Register (8 bit) */
+#define B53_ARL_SRCH_CTL 0x50
+#define B53_ARL_SRCH_CTL_25 0x20
+#define ARL_SRCH_VLID BIT(0)
+#define ARL_SRCH_STDN BIT(7)
+
+/* ARL Search Address Register (16 bit) */
+#define B53_ARL_SRCH_ADDR 0x51
+#define B53_ARL_SRCH_ADDR_25 0x22
+#define B53_ARL_SRCH_ADDR_65 0x24
+#define ARL_ADDR_MASK GENMASK(14, 0)
+
+/* ARL Search MAC/VID Result (64 bit) */
+#define B53_ARL_SRCH_RSTL_0_MACVID 0x60
+
+/* Single register search result on 5325 */
+#define B53_ARL_SRCH_RSTL_0_MACVID_25 0x24
+/* Single register search result on 5365 */
+#define B53_ARL_SRCH_RSTL_0_MACVID_65 0x30
+
+/* ARL Search Data Result (32 bit) */
+#define B53_ARL_SRCH_RSTL_0 0x68
+
+#define B53_ARL_SRCH_RSTL_MACVID(x) (B53_ARL_SRCH_RSTL_0_MACVID + ((x) * 0x10))
+#define B53_ARL_SRCH_RSTL(x) (B53_ARL_SRCH_RSTL_0 + ((x) * 0x10))
+
/*************************************************************************
* Port VLAN Registers
*************************************************************************/
projects / karo-tx-linux.git / commitdiff