^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Shared Memory Communications over RDMA (SMC-R) and RoCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Definitions for the SMC module (socket related)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright IBM Corp. 2016
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Author(s): Ursula Braun <ubraun@linux.vnet.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #ifndef _SMC_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define _SMC_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define SMC_MAX_PNETID_LEN 16 /* Max. length of PNET id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) struct smc_hashinfo {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) rwlock_t lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) struct hlist_head ht;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) int smc_hash_sk(struct sock *sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) void smc_unhash_sk(struct sock *sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) /* SMCD/ISM device driver interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) struct smcd_dmb {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) u64 dmb_tok;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) u64 rgid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) u32 dmb_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) u32 sba_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) u32 vlan_valid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) u32 vlan_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) void *cpu_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) dma_addr_t dma_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define ISM_EVENT_DMB 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define ISM_EVENT_GID 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define ISM_EVENT_SWR 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define ISM_RESERVED_VLANID 0x1FFF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define ISM_ERROR 0xFFFF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) struct smcd_event {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) u32 type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) u32 code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) u64 tok;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) u64 time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) u64 info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct smcd_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) struct smcd_ops {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) int (*query_remote_gid)(struct smcd_dev *dev, u64 rgid, u32 vid_valid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) u32 vid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) int (*register_dmb)(struct smcd_dev *dev, struct smcd_dmb *dmb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) int (*unregister_dmb)(struct smcd_dev *dev, struct smcd_dmb *dmb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) int (*add_vlan_id)(struct smcd_dev *dev, u64 vlan_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) int (*del_vlan_id)(struct smcd_dev *dev, u64 vlan_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) int (*set_vlan_required)(struct smcd_dev *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) int (*reset_vlan_required)(struct smcd_dev *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) int (*signal_event)(struct smcd_dev *dev, u64 rgid, u32 trigger_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) u32 event_code, u64 info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) int (*move_data)(struct smcd_dev *dev, u64 dmb_tok, unsigned int idx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) bool sf, unsigned int offset, void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) unsigned int size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) void (*get_system_eid)(struct smcd_dev *dev, u8 **eid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) u16 (*get_chid)(struct smcd_dev *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) struct smcd_dev {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) const struct smcd_ops *ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct device dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) void *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) u64 local_gid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) spinlock_t lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) struct smc_connection **conn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) struct list_head vlan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) struct workqueue_struct *event_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) u8 pnetid[SMC_MAX_PNETID_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) bool pnetid_by_user;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) struct list_head lgr_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) spinlock_t lgr_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) atomic_t lgr_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) wait_queue_head_t lgrs_deleted;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) u8 going_away : 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct smcd_dev *smcd_alloc_dev(struct device *parent, const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) const struct smcd_ops *ops, int max_dmbs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) int smcd_register_dev(struct smcd_dev *smcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) void smcd_unregister_dev(struct smcd_dev *smcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) void smcd_free_dev(struct smcd_dev *smcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) void smcd_handle_event(struct smcd_dev *dev, struct smcd_event *event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) void smcd_handle_irq(struct smcd_dev *dev, unsigned int bit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) #endif /* _SMC_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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