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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
a4cf0443 UB |
2 | /* |
3 | * Shared Memory Communications over RDMA (SMC-R) and RoCE | |
4 | * | |
5 | * Definitions for IB environment | |
6 | * | |
7 | * Copyright IBM Corp. 2016 | |
8 | * | |
9 | * Author(s): Ursula Braun <Ursula Braun@linux.vnet.ibm.com> | |
10 | */ | |
11 | ||
12 | #ifndef _SMC_IB_H | |
13 | #define _SMC_IB_H | |
14 | ||
282ccf6e | 15 | #include <linux/interrupt.h> |
143c0171 | 16 | #include <linux/if_ether.h> |
a4cf0443 UB |
17 | #include <rdma/ib_verbs.h> |
18 | ||
19 | #define SMC_MAX_PORTS 2 /* Max # of ports */ | |
20 | #define SMC_GID_SIZE sizeof(union ib_gid) | |
21 | ||
f38ba179 UB |
22 | #define SMC_IB_MAX_SEND_SGE 2 |
23 | ||
a4cf0443 UB |
24 | struct smc_ib_devices { /* list of smc ib devices definition */ |
25 | struct list_head list; | |
26 | spinlock_t lock; /* protects list of smc ib devices */ | |
27 | }; | |
28 | ||
29 | extern struct smc_ib_devices smc_ib_devices; /* list of smc ib devices */ | |
30 | ||
31 | struct smc_ib_device { /* ib-device infos for smc */ | |
32 | struct list_head list; | |
33 | struct ib_device *ibdev; | |
34 | struct ib_port_attr pattr[SMC_MAX_PORTS]; /* ib dev. port attrs */ | |
bd4ad577 | 35 | struct ib_event_handler event_handler; /* global ib_event handler */ |
f38ba179 UB |
36 | struct ib_cq *roce_cq_send; /* send completion queue */ |
37 | struct ib_cq *roce_cq_recv; /* recv completion queue */ | |
38 | struct tasklet_struct send_tasklet; /* called by send cq handler */ | |
39 | struct tasklet_struct recv_tasklet; /* called by recv cq handler */ | |
143c0171 UB |
40 | char mac[SMC_MAX_PORTS][ETH_ALEN]; |
41 | /* mac address per port*/ | |
a4cf0443 UB |
42 | union ib_gid gid[SMC_MAX_PORTS]; /* gid per port */ |
43 | u8 initialized : 1; /* ib dev CQ, evthdl done */ | |
bd4ad577 UB |
44 | struct work_struct port_event_work; |
45 | unsigned long port_event_mask; | |
a4cf0443 UB |
46 | }; |
47 | ||
cd6851f3 | 48 | struct smc_buf_desc; |
f38ba179 | 49 | struct smc_link; |
cd6851f3 | 50 | |
a4cf0443 UB |
51 | int smc_ib_register_client(void) __init; |
52 | void smc_ib_unregister_client(void); | |
53 | bool smc_ib_port_active(struct smc_ib_device *smcibdev, u8 ibport); | |
54 | int smc_ib_remember_port_attr(struct smc_ib_device *smcibdev, u8 ibport); | |
a3fe3d01 UB |
55 | int smc_ib_buf_map_sg(struct smc_ib_device *smcibdev, |
56 | struct smc_buf_desc *buf_slot, | |
57 | enum dma_data_direction data_direction); | |
58 | void smc_ib_buf_unmap_sg(struct smc_ib_device *smcibdev, | |
59 | struct smc_buf_desc *buf_slot, | |
60 | enum dma_data_direction data_direction); | |
f38ba179 UB |
61 | void smc_ib_dealloc_protection_domain(struct smc_link *lnk); |
62 | int smc_ib_create_protection_domain(struct smc_link *lnk); | |
63 | void smc_ib_destroy_queue_pair(struct smc_link *lnk); | |
64 | int smc_ib_create_queue_pair(struct smc_link *lnk); | |
bd4ad577 UB |
65 | int smc_ib_ready_link(struct smc_link *lnk); |
66 | int smc_ib_modify_qp_rts(struct smc_link *lnk); | |
67 | int smc_ib_modify_qp_reset(struct smc_link *lnk); | |
68 | long smc_ib_setup_per_ibdev(struct smc_ib_device *smcibdev); | |
897e1c24 UB |
69 | int smc_ib_get_memory_region(struct ib_pd *pd, int access_flags, |
70 | struct smc_buf_desc *buf_slot); | |
71 | void smc_ib_put_memory_region(struct ib_mr *mr); | |
10428dd8 UB |
72 | void smc_ib_sync_sg_for_cpu(struct smc_ib_device *smcibdev, |
73 | struct smc_buf_desc *buf_slot, | |
74 | enum dma_data_direction data_direction); | |
75 | void smc_ib_sync_sg_for_device(struct smc_ib_device *smcibdev, | |
76 | struct smc_buf_desc *buf_slot, | |
77 | enum dma_data_direction data_direction); | |
a4cf0443 | 78 | #endif |