diff options
Diffstat (limited to 'drivers/scsi/elx/libefc/efc_node.h')
| -rw-r--r-- | drivers/scsi/elx/libefc/efc_node.h | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/drivers/scsi/elx/libefc/efc_node.h b/drivers/scsi/elx/libefc/efc_node.h new file mode 100644 index 000000000000..e9c600ac45d5 --- /dev/null +++ b/drivers/scsi/elx/libefc/efc_node.h @@ -0,0 +1,191 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2021 Broadcom. All Rights Reserved. The term + * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. + */ + +#if !defined(__EFC_NODE_H__) +#define __EFC_NODE_H__ +#include "scsi/fc/fc_ns.h" + +#define EFC_NODEDB_PAUSE_FABRIC_LOGIN (1 << 0) +#define EFC_NODEDB_PAUSE_NAMESERVER (1 << 1) +#define EFC_NODEDB_PAUSE_NEW_NODES (1 << 2) + +#define MAX_ACC_REJECT_PAYLOAD sizeof(struct fc_els_ls_rjt) + +#define scsi_io_printf(io, fmt, ...) \ + efc_log_debug(io->efc, "[%s] [%04x][i:%04x t:%04x h:%04x]" fmt, \ + io->node->display_name, io->instance_index, io->init_task_tag, \ + io->tgt_task_tag, io->hw_tag, ##__VA_ARGS__) + +static inline void +efc_node_evt_set(struct efc_sm_ctx *ctx, enum efc_sm_event evt, + const char *handler) +{ + struct efc_node *node = ctx->app; + + if (evt == EFC_EVT_ENTER) { + strncpy(node->current_state_name, handler, + sizeof(node->current_state_name)); + } else if (evt == EFC_EVT_EXIT) { + strncpy(node->prev_state_name, node->current_state_name, + sizeof(node->prev_state_name)); + strncpy(node->current_state_name, "invalid", + sizeof(node->current_state_name)); + } + node->prev_evt = node->current_evt; + node->current_evt = evt; +} + +/** + * hold frames in pending frame list + * + * Unsolicited receive frames are held on the node pending frame list, + * rather than being processed. + */ + +static inline void +efc_node_hold_frames(struct efc_node *node) +{ + node->hold_frames = true; +} + +/** + * accept frames + * + * Unsolicited receive frames processed rather than being held on the node + * pending frame list. + */ + +static inline void +efc_node_accept_frames(struct efc_node *node) +{ + node->hold_frames = false; +} + +/* + * Node initiator/target enable defines + * All combinations of the SLI port (nport) initiator/target enable, + * and remote node initiator/target enable are enumerated. + * ex: EFC_NODE_ENABLE_T_TO_IT decodes to target mode is enabled on SLI port + * and I+T is enabled on remote node. + */ +enum efc_node_enable { + EFC_NODE_ENABLE_x_TO_x, + EFC_NODE_ENABLE_x_TO_T, + EFC_NODE_ENABLE_x_TO_I, + EFC_NODE_ENABLE_x_TO_IT, + EFC_NODE_ENABLE_T_TO_x, + EFC_NODE_ENABLE_T_TO_T, + EFC_NODE_ENABLE_T_TO_I, + EFC_NODE_ENABLE_T_TO_IT, + EFC_NODE_ENABLE_I_TO_x, + EFC_NODE_ENABLE_I_TO_T, + EFC_NODE_ENABLE_I_TO_I, + EFC_NODE_ENABLE_I_TO_IT, + EFC_NODE_ENABLE_IT_TO_x, + EFC_NODE_ENABLE_IT_TO_T, + EFC_NODE_ENABLE_IT_TO_I, + EFC_NODE_ENABLE_IT_TO_IT, +}; + +static inline enum efc_node_enable +efc_node_get_enable(struct efc_node *node) +{ + u32 retval = 0; + + if (node->nport->enable_ini) + retval |= (1U << 3); + if (node->nport->enable_tgt) + retval |= (1U << 2); + if (node->init) + retval |= (1U << 1); + if (node->targ) + retval |= (1U << 0); + return (enum efc_node_enable)retval; +} + +int +efc_node_check_els_req(struct efc_sm_ctx *ctx, + enum efc_sm_event evt, void *arg, + u8 cmd, void (*efc_node_common_func)(const char *, + struct efc_sm_ctx *, enum efc_sm_event, void *), + const char *funcname); +int +efc_node_check_ns_req(struct efc_sm_ctx *ctx, + enum efc_sm_event evt, void *arg, + u16 cmd, void (*efc_node_common_func)(const char *, + struct efc_sm_ctx *, enum efc_sm_event, void *), + const char *funcname); +int +efc_node_attach(struct efc_node *node); +struct efc_node * +efc_node_alloc(struct efc_nport *nport, u32 port_id, + bool init, bool targ); +void +efc_node_free(struct efc_node *efc); +void +efc_node_update_display_name(struct efc_node *node); +void efc_node_post_event(struct efc_node *node, enum efc_sm_event evt, + void *arg); + +void +__efc_node_shutdown(struct efc_sm_ctx *ctx, + enum efc_sm_event evt, void *arg); +void +__efc_node_wait_node_free(struct efc_sm_ctx *ctx, + enum efc_sm_event evt, void *arg); +void +__efc_node_wait_els_shutdown(struct efc_sm_ctx *ctx, + enum efc_sm_event evt, void *arg); +void +__efc_node_wait_ios_shutdown(struct efc_sm_ctx *ctx, + enum efc_sm_event evt, void *arg); +void +efc_node_save_sparms(struct efc_node *node, void *payload); +void +efc_node_transition(struct efc_node *node, + void (*state)(struct efc_sm_ctx *, enum efc_sm_event, + void *), void *data); +void +__efc_node_common(const char *funcname, struct efc_sm_ctx *ctx, + enum efc_sm_event evt, void *arg); + +void +efc_node_initiate_cleanup(struct efc_node *node); + +void +efc_node_build_eui_name(char *buf, u32 buf_len, uint64_t eui_name); + +void +efc_node_pause(struct efc_node *node, + void (*state)(struct efc_sm_ctx *ctx, + enum efc_sm_event evt, void *arg)); +void +__efc_node_paused(struct efc_sm_ctx *ctx, + enum efc_sm_event evt, void *arg); +int +efc_node_active_ios_empty(struct efc_node *node); +void +efc_node_send_ls_io_cleanup(struct efc_node *node); + +int +efc_els_io_list_empty(struct efc_node *node, struct list_head *list); + +void +efc_process_node_pending(struct efc_node *domain); + +u64 efc_node_get_wwnn(struct efc_node *node); +struct efc_node * +efc_node_find(struct efc_nport *nport, u32 id); +void +efc_node_post_els_resp(struct efc_node *node, u32 evt, void *arg); +void +efc_node_recv_els_frame(struct efc_node *node, struct efc_hw_sequence *s); +void +efc_node_recv_ct_frame(struct efc_node *node, struct efc_hw_sequence *seq); +void +efc_node_recv_fcp_cmd(struct efc_node *node, struct efc_hw_sequence *seq); + +#endif /* __EFC_NODE_H__ */ |