[RFC PATCH net-next 1/2] net: ti: icssg-prueth: Add helper functions to configure FDB
MD Danish Anwar
danishanwar at ti.com
Thu May 16 02:17:51 PDT 2024
Introduce helper functions to configure firmware FDB tables, VLAN tables
and Port VLAN ID settings.
Signed-off-by: MD Danish Anwar <danishanwar at ti.com>
---
drivers/net/ethernet/ti/icssg/icssg_config.c | 170 +++++++++++++++++++
drivers/net/ethernet/ti/icssg/icssg_config.h | 19 +++
drivers/net/ethernet/ti/icssg/icssg_prueth.h | 12 ++
3 files changed, 201 insertions(+)
diff --git a/drivers/net/ethernet/ti/icssg/icssg_config.c b/drivers/net/ethernet/ti/icssg/icssg_config.c
index 15f2235bf90f..2213374d4d45 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_config.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_config.c
@@ -477,3 +477,173 @@ void icssg_config_set_speed(struct prueth_emac *emac)
writeb(fw_speed, emac->dram.va + PORT_LINK_SPEED_OFFSET);
}
+
+int icssg_send_fdb_msg(struct prueth_emac *emac, struct mgmt_cmd *cmd,
+ struct mgmt_cmd_rsp *rsp)
+{
+ struct prueth *prueth = emac->prueth;
+ int slice = prueth_emac_slice(emac);
+ int addr, ret;
+
+ addr = icssg_queue_pop(prueth, slice == 0 ?
+ ICSSG_CMD_POP_SLICE0 : ICSSG_CMD_POP_SLICE1);
+ if (addr < 0)
+ return addr;
+
+ /* First 4 bytes have FW owned buffer linking info which should
+ * not be touched
+ */
+ memcpy_toio(prueth->shram.va + addr + 4, cmd, sizeof(*cmd));
+ icssg_queue_push(prueth, slice == 0 ?
+ ICSSG_CMD_PUSH_SLICE0 : ICSSG_CMD_PUSH_SLICE1, addr);
+ ret = read_poll_timeout(icssg_queue_pop, addr, addr >= 0,
+ 2000, 20000000, false, prueth, slice == 0 ?
+ ICSSG_RSP_POP_SLICE0 : ICSSG_RSP_POP_SLICE1);
+ if (ret) {
+ netdev_err(emac->ndev, "Timedout sending HWQ message\n");
+ return ret;
+ }
+
+ memcpy_fromio(rsp, prueth->shram.va + addr, sizeof(*rsp));
+ /* Return buffer back for to pool */
+ icssg_queue_push(prueth, slice == 0 ?
+ ICSSG_RSP_PUSH_SLICE0 : ICSSG_RSP_PUSH_SLICE1, addr);
+
+ return 0;
+}
+
+static void icssg_fdb_setup(struct prueth_emac *emac, struct mgmt_cmd *fdb_cmd,
+ const unsigned char *addr, u8 fid, int cmd)
+{
+ int slice = prueth_emac_slice(emac);
+ u8 mac_fid[ETH_ALEN + 2];
+ u16 fdb_slot;
+
+ ether_addr_copy(mac_fid, addr);
+
+ /* 1-1 VID-FID mapping is already setup */
+ mac_fid[ETH_ALEN] = fid;
+ mac_fid[ETH_ALEN + 1] = 0;
+
+ fdb_slot = bitrev32(crc32_le(0, mac_fid, 8)) & PRUETH_SWITCH_FDB_MASK;
+
+ fdb_cmd->header = ICSSG_FW_MGMT_CMD_HEADER;
+ fdb_cmd->type = ICSSG_FW_MGMT_FDB_CMD_TYPE;
+ fdb_cmd->seqnum = ++(emac->prueth->icssg_hwcmdseq);
+ fdb_cmd->param = cmd;
+ fdb_cmd->param |= (slice << 4);
+
+ memcpy(&fdb_cmd->cmd_args[0], addr, 4);
+ memcpy(&fdb_cmd->cmd_args[1], &addr[4], 2);
+ fdb_cmd->cmd_args[2] = fdb_slot;
+
+ netdev_dbg(emac->ndev, "MAC %pM slot %X FID %X\n", addr, fdb_slot, fid);
+}
+
+int icssg_fdb_add_del(struct prueth_emac *emac, const unsigned char *addr,
+ u8 vid, u8 fid_c2, bool add)
+{
+ struct mgmt_cmd_rsp fdb_cmd_rsp = { 0 };
+ struct mgmt_cmd fdb_cmd = { 0 };
+ u8 fid = vid;
+ int ret;
+
+ icssg_fdb_setup(emac, &fdb_cmd, addr, fid, add ? ICSS_CMD_ADD_FDB : ICSS_CMD_DEL_FDB);
+
+ fid_c2 |= ICSSG_FDB_ENTRY_VALID;
+ fdb_cmd.cmd_args[1] |= ((fid << 16) | (fid_c2 << 24));
+
+ ret = icssg_send_fdb_msg(emac, &fdb_cmd, &fdb_cmd_rsp);
+ if (ret)
+ return ret;
+
+ WARN_ON(fdb_cmd.seqnum != fdb_cmd_rsp.seqnum);
+ if (fdb_cmd_rsp.status == 1)
+ return 0;
+
+ return -EINVAL;
+}
+
+int icssg_fdb_lookup(struct prueth_emac *emac, const unsigned char *addr,
+ u8 vid)
+{
+ struct mgmt_cmd_rsp fdb_cmd_rsp = { 0 };
+ struct mgmt_cmd fdb_cmd = { 0 };
+ struct prueth_fdb_slot *slot;
+ u8 fid = vid;
+ int ret, i;
+
+ icssg_fdb_setup(emac, &fdb_cmd, addr, fid, ICSS_CMD_GET_FDB_SLOT);
+
+ fdb_cmd.cmd_args[1] |= fid << 16;
+
+ ret = icssg_send_fdb_msg(emac, &fdb_cmd, &fdb_cmd_rsp);
+ if (ret)
+ return ret;
+
+ WARN_ON(fdb_cmd.seqnum != fdb_cmd_rsp.seqnum);
+
+ slot = (struct prueth_fdb_slot __force *)(emac->dram.va + FDB_CMD_BUFFER);
+ for (i = 0; i < 4; i++) {
+ if (ether_addr_equal(addr, slot->mac) && vid == slot->fid)
+ return (slot->fid_c2 & ~ICSSG_FDB_ENTRY_VALID);
+ slot++;
+ }
+
+ return 0;
+}
+
+void icssg_vtbl_modify(struct prueth_emac *emac, u8 vid, u8 port_mask,
+ u8 untag_mask, bool add)
+{
+ struct prueth *prueth = emac->prueth;
+ struct prueth_vlan_tbl *tbl;
+ u8 fid_c1;
+
+ tbl = prueth->vlan_tbl;
+ fid_c1 = tbl[vid].fid_c1;
+
+ /* FID_C1: bit0..2 port membership mask,
+ * bit3..5 tagging mask for each port
+ * bit6 Stream VID (not handled currently)
+ * bit7 MC flood (not handled currently)
+ */
+ if (add) {
+ fid_c1 |= (port_mask | port_mask << 3);
+ fid_c1 &= ~(untag_mask << 3);
+ } else {
+ fid_c1 &= ~(port_mask | port_mask << 3);
+ }
+
+ tbl[vid].fid_c1 = fid_c1;
+}
+
+u16 icssg_get_pvid(struct prueth_emac *emac)
+{
+ struct prueth *prueth = emac->prueth;
+ u32 pvid;
+
+ if (emac->port_id == PRUETH_PORT_MII0)
+ pvid = readl(prueth->shram.va + EMAC_ICSSG_SWITCH_PORT1_DEFAULT_VLAN_OFFSET);
+ else
+ pvid = readl(prueth->shram.va + EMAC_ICSSG_SWITCH_PORT2_DEFAULT_VLAN_OFFSET);
+
+ pvid = pvid >> 24;
+
+ return pvid;
+}
+
+void icssg_set_pvid(struct prueth *prueth, u8 vid, u8 port)
+{
+ u32 pvid;
+
+ /* only 256 VLANs are supported */
+ pvid = (u32 __force)cpu_to_be32((ETH_P_8021Q << 16) | (vid & 0xff));
+
+ if (port == PRUETH_PORT_MII0)
+ writel(pvid, prueth->shram.va + EMAC_ICSSG_SWITCH_PORT1_DEFAULT_VLAN_OFFSET);
+ else if (port == PRUETH_PORT_MII1)
+ writel(pvid, prueth->shram.va + EMAC_ICSSG_SWITCH_PORT2_DEFAULT_VLAN_OFFSET);
+ else
+ writel(pvid, prueth->shram.va + EMAC_ICSSG_SWITCH_PORT0_DEFAULT_VLAN_OFFSET);
+}
diff --git a/drivers/net/ethernet/ti/icssg/icssg_config.h b/drivers/net/ethernet/ti/icssg/icssg_config.h
index cf2ea4bd22a2..9d8558bd0f15 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_config.h
+++ b/drivers/net/ethernet/ti/icssg/icssg_config.h
@@ -35,6 +35,8 @@ struct icssg_flow_cfg {
(2 * (PRUETH_EMAC_BUF_POOL_SIZE * PRUETH_NUM_BUF_POOLS + \
PRUETH_EMAC_RX_CTX_BUF_SIZE * 2))
+#define PRUETH_SWITCH_FDB_MASK ((SIZE_OF_FDB / NUMBER_OF_FDB_BUCKET_ENTRIES) - 1)
+
struct icssg_rxq_ctx {
__le32 start[3];
__le32 end;
@@ -202,6 +204,23 @@ struct icssg_setclock_desc {
#define ICSSG_TS_PUSH_SLICE0 40
#define ICSSG_TS_PUSH_SLICE1 41
+struct mgmt_cmd {
+ u8 param;
+ u8 seqnum;
+ u8 type;
+ u8 header;
+ u32 cmd_args[3];
+} __packed;
+
+struct mgmt_cmd_rsp {
+ u32 reserved;
+ u8 status;
+ u8 seqnum;
+ u8 type;
+ u8 header;
+ u32 cmd_args[3];
+} __packed;
+
/* FDB FID_C2 flag definitions */
/* Indicates host port membership.*/
#define ICSSG_FDB_ENTRY_P0_MEMBERSHIP BIT(0)
diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.h b/drivers/net/ethernet/ti/icssg/icssg_prueth.h
index a78c5eb75fb8..82bdad9702c3 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth.h
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.h
@@ -232,6 +232,7 @@ struct icssg_firmwares {
* @emacs_initialized: num of EMACs/ext ports that are up/running
* @iep0: pointer to IEP0 device
* @iep1: pointer to IEP1 device
+ * @vlan_tbl: VLAN-FID table pointer
*/
struct prueth {
struct device *dev;
@@ -256,6 +257,7 @@ struct prueth {
int emacs_initialized;
struct icss_iep *iep0;
struct icss_iep *iep1;
+ struct prueth_vlan_tbl *vlan_tbl;
};
struct emac_tx_ts_response {
@@ -313,6 +315,16 @@ int icssg_queue_pop(struct prueth *prueth, u8 queue);
void icssg_queue_push(struct prueth *prueth, int queue, u16 addr);
u32 icssg_queue_level(struct prueth *prueth, int queue);
+int icssg_send_fdb_msg(struct prueth_emac *emac, struct mgmt_cmd *cmd,
+ struct mgmt_cmd_rsp *rsp);
+int icssg_fdb_add_del(struct prueth_emac *emac, const unsigned char *addr,
+ u8 vid, u8 fid_c2, bool add);
+int icssg_fdb_lookup(struct prueth_emac *emac, const unsigned char *addr,
+ u8 vid);
+void icssg_vtbl_modify(struct prueth_emac *emac, u8 vid, u8 port_mask,
+ u8 untag_mask, bool add);
+u16 icssg_get_pvid(struct prueth_emac *emac);
+void icssg_set_pvid(struct prueth *prueth, u8 vid, u8 port);
#define prueth_napi_to_tx_chn(pnapi) \
container_of(pnapi, struct prueth_tx_chn, napi_tx)
--
2.34.1
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