1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) 2021 Broadcom. All Rights Reserved. The term 4 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. 5 */ 6 7 #if !defined(__EFC_NODE_H__) 8 #define __EFC_NODE_H__ 9 #include "scsi/fc/fc_ns.h" 10 11 #define EFC_NODEDB_PAUSE_FABRIC_LOGIN (1 << 0) 12 #define EFC_NODEDB_PAUSE_NAMESERVER (1 << 1) 13 #define EFC_NODEDB_PAUSE_NEW_NODES (1 << 2) 14 15 #define MAX_ACC_REJECT_PAYLOAD sizeof(struct fc_els_ls_rjt) 16 17 #define scsi_io_printf(io, fmt, ...) \ 18 efc_log_debug(io->efc, "[%s] [%04x][i:%04x t:%04x h:%04x]" fmt, \ 19 io->node->display_name, io->instance_index, io->init_task_tag, \ 20 io->tgt_task_tag, io->hw_tag, ##__VA_ARGS__) 21 22 static inline void 23 efc_node_evt_set(struct efc_sm_ctx *ctx, enum efc_sm_event evt, 24 const char *handler) 25 { 26 struct efc_node *node = ctx->app; 27 28 if (evt == EFC_EVT_ENTER) { 29 strscpy_pad(node->current_state_name, handler, 30 sizeof(node->current_state_name)); 31 } else if (evt == EFC_EVT_EXIT) { 32 memcpy(node->prev_state_name, node->current_state_name, 33 sizeof(node->prev_state_name)); 34 strscpy_pad(node->current_state_name, "invalid", 35 sizeof(node->current_state_name)); 36 } 37 node->prev_evt = node->current_evt; 38 node->current_evt = evt; 39 } 40 41 /** 42 * hold frames in pending frame list 43 * 44 * Unsolicited receive frames are held on the node pending frame list, 45 * rather than being processed. 46 */ 47 48 static inline void 49 efc_node_hold_frames(struct efc_node *node) 50 { 51 node->hold_frames = true; 52 } 53 54 /** 55 * accept frames 56 * 57 * Unsolicited receive frames processed rather than being held on the node 58 * pending frame list. 59 */ 60 61 static inline void 62 efc_node_accept_frames(struct efc_node *node) 63 { 64 node->hold_frames = false; 65 } 66 67 /* 68 * Node initiator/target enable defines 69 * All combinations of the SLI port (nport) initiator/target enable, 70 * and remote node initiator/target enable are enumerated. 71 * ex: EFC_NODE_ENABLE_T_TO_IT decodes to target mode is enabled on SLI port 72 * and I+T is enabled on remote node. 73 */ 74 enum efc_node_enable { 75 EFC_NODE_ENABLE_x_TO_x, 76 EFC_NODE_ENABLE_x_TO_T, 77 EFC_NODE_ENABLE_x_TO_I, 78 EFC_NODE_ENABLE_x_TO_IT, 79 EFC_NODE_ENABLE_T_TO_x, 80 EFC_NODE_ENABLE_T_TO_T, 81 EFC_NODE_ENABLE_T_TO_I, 82 EFC_NODE_ENABLE_T_TO_IT, 83 EFC_NODE_ENABLE_I_TO_x, 84 EFC_NODE_ENABLE_I_TO_T, 85 EFC_NODE_ENABLE_I_TO_I, 86 EFC_NODE_ENABLE_I_TO_IT, 87 EFC_NODE_ENABLE_IT_TO_x, 88 EFC_NODE_ENABLE_IT_TO_T, 89 EFC_NODE_ENABLE_IT_TO_I, 90 EFC_NODE_ENABLE_IT_TO_IT, 91 }; 92 93 static inline enum efc_node_enable 94 efc_node_get_enable(struct efc_node *node) 95 { 96 u32 retval = 0; 97 98 if (node->nport->enable_ini) 99 retval |= (1U << 3); 100 if (node->nport->enable_tgt) 101 retval |= (1U << 2); 102 if (node->init) 103 retval |= (1U << 1); 104 if (node->targ) 105 retval |= (1U << 0); 106 return (enum efc_node_enable)retval; 107 } 108 109 int 110 efc_node_check_els_req(struct efc_sm_ctx *ctx, 111 enum efc_sm_event evt, void *arg, 112 u8 cmd, void (*efc_node_common_func)(const char *, 113 struct efc_sm_ctx *, enum efc_sm_event, void *), 114 const char *funcname); 115 int 116 efc_node_check_ns_req(struct efc_sm_ctx *ctx, 117 enum efc_sm_event evt, void *arg, 118 u16 cmd, void (*efc_node_common_func)(const char *, 119 struct efc_sm_ctx *, enum efc_sm_event, void *), 120 const char *funcname); 121 int 122 efc_node_attach(struct efc_node *node); 123 struct efc_node * 124 efc_node_alloc(struct efc_nport *nport, u32 port_id, 125 bool init, bool targ); 126 void 127 efc_node_free(struct efc_node *efc); 128 void 129 efc_node_update_display_name(struct efc_node *node); 130 void efc_node_post_event(struct efc_node *node, enum efc_sm_event evt, 131 void *arg); 132 133 void 134 __efc_node_shutdown(struct efc_sm_ctx *ctx, 135 enum efc_sm_event evt, void *arg); 136 void 137 __efc_node_wait_node_free(struct efc_sm_ctx *ctx, 138 enum efc_sm_event evt, void *arg); 139 void 140 __efc_node_wait_els_shutdown(struct efc_sm_ctx *ctx, 141 enum efc_sm_event evt, void *arg); 142 void 143 __efc_node_wait_ios_shutdown(struct efc_sm_ctx *ctx, 144 enum efc_sm_event evt, void *arg); 145 void 146 efc_node_save_sparms(struct efc_node *node, void *payload); 147 void 148 efc_node_transition(struct efc_node *node, 149 void (*state)(struct efc_sm_ctx *, enum efc_sm_event, 150 void *), void *data); 151 void 152 __efc_node_common(const char *funcname, struct efc_sm_ctx *ctx, 153 enum efc_sm_event evt, void *arg); 154 155 void 156 efc_node_initiate_cleanup(struct efc_node *node); 157 158 void 159 efc_node_build_eui_name(char *buf, u32 buf_len, uint64_t eui_name); 160 161 void 162 efc_node_pause(struct efc_node *node, 163 void (*state)(struct efc_sm_ctx *ctx, 164 enum efc_sm_event evt, void *arg)); 165 void 166 __efc_node_paused(struct efc_sm_ctx *ctx, 167 enum efc_sm_event evt, void *arg); 168 int 169 efc_node_active_ios_empty(struct efc_node *node); 170 void 171 efc_node_send_ls_io_cleanup(struct efc_node *node); 172 173 int 174 efc_els_io_list_empty(struct efc_node *node, struct list_head *list); 175 176 void 177 efc_process_node_pending(struct efc_node *domain); 178 179 u64 efc_node_get_wwnn(struct efc_node *node); 180 struct efc_node * 181 efc_node_find(struct efc_nport *nport, u32 id); 182 void 183 efc_node_post_els_resp(struct efc_node *node, u32 evt, void *arg); 184 void 185 efc_node_recv_els_frame(struct efc_node *node, struct efc_hw_sequence *s); 186 void 187 efc_node_recv_ct_frame(struct efc_node *node, struct efc_hw_sequence *seq); 188 void 189 efc_node_recv_fcp_cmd(struct efc_node *node, struct efc_hw_sequence *seq); 190 191 #endif /* __EFC_NODE_H__ */ 192