1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * DPAA2 Ethernet Switch declarations 4 * 5 * Copyright 2014-2016 Freescale Semiconductor Inc. 6 * Copyright 2017-2021 NXP 7 * 8 */ 9 10 #ifndef __ETHSW_H 11 #define __ETHSW_H 12 13 #include <linux/netdevice.h> 14 #include <linux/etherdevice.h> 15 #include <linux/rtnetlink.h> 16 #include <linux/if_vlan.h> 17 #include <uapi/linux/if_bridge.h> 18 #include <net/switchdev.h> 19 #include <linux/if_bridge.h> 20 #include <linux/fsl/mc.h> 21 #include <net/pkt_cls.h> 22 #include <soc/fsl/dpaa2-io.h> 23 24 #include "dpaa2-mac.h" 25 #include "dpsw.h" 26 27 /* Number of IRQs supported */ 28 #define DPSW_IRQ_NUM 2 29 30 /* Port is member of VLAN */ 31 #define ETHSW_VLAN_MEMBER 1 32 /* VLAN to be treated as untagged on egress */ 33 #define ETHSW_VLAN_UNTAGGED 2 34 /* Untagged frames will be assigned to this VLAN */ 35 #define ETHSW_VLAN_PVID 4 36 /* VLAN configured on the switch */ 37 #define ETHSW_VLAN_GLOBAL 8 38 39 /* Maximum Frame Length supported by HW (currently 10k) */ 40 #define DPAA2_MFL (10 * 1024) 41 #define ETHSW_MAX_FRAME_LENGTH (DPAA2_MFL - VLAN_ETH_HLEN - ETH_FCS_LEN) 42 #define ETHSW_L2_MAX_FRM(mtu) ((mtu) + VLAN_ETH_HLEN + ETH_FCS_LEN) 43 44 #define ETHSW_FEATURE_MAC_ADDR BIT(0) 45 46 /* Number of receive queues (one RX and one TX_CONF) */ 47 #define DPAA2_SWITCH_RX_NUM_FQS 2 48 49 /* Hardware requires alignment for ingress/egress buffer addresses */ 50 #define DPAA2_SWITCH_RX_BUF_RAW_SIZE PAGE_SIZE 51 #define DPAA2_SWITCH_RX_BUF_TAILROOM \ 52 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) 53 #define DPAA2_SWITCH_RX_BUF_SIZE \ 54 (DPAA2_SWITCH_RX_BUF_RAW_SIZE - DPAA2_SWITCH_RX_BUF_TAILROOM) 55 56 #define DPAA2_SWITCH_STORE_SIZE 16 57 58 /* Buffer management */ 59 #define BUFS_PER_CMD 7 60 #define DPAA2_ETHSW_NUM_BUFS (1024 * BUFS_PER_CMD) 61 #define DPAA2_ETHSW_REFILL_THRESH (DPAA2_ETHSW_NUM_BUFS * 5 / 6) 62 63 /* Number of times to retry DPIO portal operations while waiting 64 * for portal to finish executing current command and become 65 * available. We want to avoid being stuck in a while loop in case 66 * hardware becomes unresponsive, but not give up too easily if 67 * the portal really is busy for valid reasons 68 */ 69 #define DPAA2_SWITCH_SWP_BUSY_RETRIES 1000 70 71 /* Hardware annotation buffer size */ 72 #define DPAA2_SWITCH_HWA_SIZE 64 73 /* Software annotation buffer size */ 74 #define DPAA2_SWITCH_SWA_SIZE 64 75 76 #define DPAA2_SWITCH_TX_BUF_ALIGN 64 77 78 #define DPAA2_SWITCH_TX_DATA_OFFSET \ 79 (DPAA2_SWITCH_HWA_SIZE + DPAA2_SWITCH_SWA_SIZE) 80 81 #define DPAA2_SWITCH_NEEDED_HEADROOM \ 82 (DPAA2_SWITCH_TX_DATA_OFFSET + DPAA2_SWITCH_TX_BUF_ALIGN) 83 84 #define DPAA2_ETHSW_PORT_MAX_ACL_ENTRIES 16 85 #define DPAA2_ETHSW_PORT_DEFAULT_TRAPS 1 86 87 #define DPAA2_ETHSW_PORT_ACL_CMD_BUF_SIZE 256 88 89 extern const struct ethtool_ops dpaa2_switch_port_ethtool_ops; 90 91 struct ethsw_core; 92 93 struct dpaa2_switch_fq { 94 struct ethsw_core *ethsw; 95 enum dpsw_queue_type type; 96 struct dpaa2_io_store *store; 97 struct dpaa2_io_notification_ctx nctx; 98 struct napi_struct napi; 99 u32 fqid; 100 }; 101 102 struct dpaa2_switch_fdb { 103 struct net_device *bridge_dev; 104 u16 fdb_id; 105 bool in_use; 106 }; 107 108 struct dpaa2_switch_acl_entry { 109 struct list_head list; 110 u16 prio; 111 unsigned long cookie; 112 113 struct dpsw_acl_entry_cfg cfg; 114 struct dpsw_acl_key key; 115 }; 116 117 struct dpaa2_switch_mirror_entry { 118 struct list_head list; 119 struct dpsw_reflection_cfg cfg; 120 unsigned long cookie; 121 u16 if_id; 122 }; 123 124 struct dpaa2_switch_filter_block { 125 struct ethsw_core *ethsw; 126 u64 ports; 127 bool in_use; 128 129 struct list_head acl_entries; 130 u16 acl_id; 131 u8 num_acl_rules; 132 133 struct list_head mirror_entries; 134 }; 135 136 static inline bool 137 dpaa2_switch_acl_tbl_is_full(struct dpaa2_switch_filter_block *filter_block) 138 { 139 if ((filter_block->num_acl_rules + DPAA2_ETHSW_PORT_DEFAULT_TRAPS) >= 140 DPAA2_ETHSW_PORT_MAX_ACL_ENTRIES) 141 return true; 142 return false; 143 } 144 145 /* Per port private data */ 146 struct ethsw_port_priv { 147 struct net_device *netdev; 148 u16 idx; 149 struct ethsw_core *ethsw_data; 150 u8 link_state; 151 u8 stp_state; 152 153 u8 vlans[VLAN_VID_MASK + 1]; 154 u16 pvid; 155 u16 tx_qdid; 156 157 struct dpaa2_switch_fdb *fdb; 158 bool bcast_flood; 159 bool ucast_flood; 160 bool learn_ena; 161 162 struct dpaa2_switch_filter_block *filter_block; 163 struct dpaa2_mac *mac; 164 /* Protects against changes to port_priv->mac */ 165 struct mutex mac_lock; 166 }; 167 168 /* Switch data */ 169 struct ethsw_core { 170 struct device *dev; 171 struct fsl_mc_io *mc_io; 172 u16 dpsw_handle; 173 struct dpsw_attr sw_attr; 174 u16 major, minor; 175 unsigned long features; 176 int dev_id; 177 struct ethsw_port_priv **ports; 178 struct iommu_domain *iommu_domain; 179 180 u8 vlans[VLAN_VID_MASK + 1]; 181 182 struct workqueue_struct *workqueue; 183 184 struct dpaa2_switch_fq fq[DPAA2_SWITCH_RX_NUM_FQS]; 185 struct fsl_mc_device *dpbp_dev; 186 int buf_count; 187 u16 bpid; 188 int napi_users; 189 190 struct dpaa2_switch_fdb *fdbs; 191 struct dpaa2_switch_filter_block *filter_blocks; 192 u16 mirror_port; 193 }; 194 195 static inline int dpaa2_switch_get_index(struct ethsw_core *ethsw, 196 struct net_device *netdev) 197 { 198 int i; 199 200 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) 201 if (ethsw->ports[i]->netdev == netdev) 202 return ethsw->ports[i]->idx; 203 204 return -EINVAL; 205 } 206 207 static inline bool dpaa2_switch_supports_cpu_traffic(struct ethsw_core *ethsw) 208 { 209 if (ethsw->sw_attr.options & DPSW_OPT_CTRL_IF_DIS) { 210 dev_err(ethsw->dev, "Control Interface is disabled, cannot probe\n"); 211 return false; 212 } 213 214 if (ethsw->sw_attr.flooding_cfg != DPSW_FLOODING_PER_FDB) { 215 dev_err(ethsw->dev, "Flooding domain is not per FDB, cannot probe\n"); 216 return false; 217 } 218 219 if (ethsw->sw_attr.broadcast_cfg != DPSW_BROADCAST_PER_FDB) { 220 dev_err(ethsw->dev, "Broadcast domain is not per FDB, cannot probe\n"); 221 return false; 222 } 223 224 if (ethsw->sw_attr.max_fdbs < ethsw->sw_attr.num_ifs) { 225 dev_err(ethsw->dev, "The number of FDBs is lower than the number of ports, cannot probe\n"); 226 return false; 227 } 228 229 return true; 230 } 231 232 static inline bool 233 dpaa2_switch_port_is_type_phy(struct ethsw_port_priv *port_priv) 234 { 235 return dpaa2_mac_is_type_phy(port_priv->mac); 236 } 237 238 static inline bool dpaa2_switch_port_has_mac(struct ethsw_port_priv *port_priv) 239 { 240 return port_priv->mac ? true : false; 241 } 242 243 bool dpaa2_switch_port_dev_check(const struct net_device *netdev); 244 245 int dpaa2_switch_port_vlans_add(struct net_device *netdev, 246 const struct switchdev_obj_port_vlan *vlan); 247 248 int dpaa2_switch_port_vlans_del(struct net_device *netdev, 249 const struct switchdev_obj_port_vlan *vlan); 250 251 typedef int dpaa2_switch_fdb_cb_t(struct ethsw_port_priv *port_priv, 252 struct fdb_dump_entry *fdb_entry, 253 void *data); 254 255 /* TC offload */ 256 257 int dpaa2_switch_cls_flower_replace(struct dpaa2_switch_filter_block *block, 258 struct flow_cls_offload *cls); 259 260 int dpaa2_switch_cls_flower_destroy(struct dpaa2_switch_filter_block *block, 261 struct flow_cls_offload *cls); 262 263 int dpaa2_switch_cls_matchall_replace(struct dpaa2_switch_filter_block *block, 264 struct tc_cls_matchall_offload *cls); 265 266 int dpaa2_switch_cls_matchall_destroy(struct dpaa2_switch_filter_block *block, 267 struct tc_cls_matchall_offload *cls); 268 269 int dpaa2_switch_acl_entry_add(struct dpaa2_switch_filter_block *block, 270 struct dpaa2_switch_acl_entry *entry); 271 272 int dpaa2_switch_block_offload_mirror(struct dpaa2_switch_filter_block *block, 273 struct ethsw_port_priv *port_priv); 274 275 int dpaa2_switch_block_unoffload_mirror(struct dpaa2_switch_filter_block *block, 276 struct ethsw_port_priv *port_priv); 277 #endif /* __ETHSW_H */ 278