| 1 | // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause |
|---|---|
| 2 | /* |
| 3 | * Copyright(c) 2017 Intel Corporation. |
| 4 | */ |
| 5 | |
| 6 | #include "exp_rcv.h" |
| 7 | #include "trace.h" |
| 8 | |
| 9 | /** |
| 10 | * hfi1_exp_tid_set_init - initialize exp_tid_set |
| 11 | * @set: the set |
| 12 | */ |
| 13 | static void hfi1_exp_tid_set_init(struct exp_tid_set *set) |
| 14 | { |
| 15 | INIT_LIST_HEAD(list: &set->list); |
| 16 | set->count = 0; |
| 17 | } |
| 18 | |
| 19 | /** |
| 20 | * hfi1_exp_tid_group_init - initialize rcd expected receive |
| 21 | * @rcd: the rcd |
| 22 | */ |
| 23 | void hfi1_exp_tid_group_init(struct hfi1_ctxtdata *rcd) |
| 24 | { |
| 25 | hfi1_exp_tid_set_init(set: &rcd->tid_group_list); |
| 26 | hfi1_exp_tid_set_init(set: &rcd->tid_used_list); |
| 27 | hfi1_exp_tid_set_init(set: &rcd->tid_full_list); |
| 28 | } |
| 29 | |
| 30 | /** |
| 31 | * hfi1_alloc_ctxt_rcv_groups - initialize expected receive groups |
| 32 | * @rcd: the context to add the groupings to |
| 33 | */ |
| 34 | int hfi1_alloc_ctxt_rcv_groups(struct hfi1_ctxtdata *rcd) |
| 35 | { |
| 36 | struct hfi1_devdata *dd = rcd->dd; |
| 37 | u32 tidbase; |
| 38 | struct tid_group *grp; |
| 39 | int i; |
| 40 | u32 ngroups; |
| 41 | |
| 42 | ngroups = rcd->expected_count / dd->rcv_entries.group_size; |
| 43 | rcd->groups = |
| 44 | kcalloc_node(n: ngroups, size: sizeof(*rcd->groups), |
| 45 | GFP_KERNEL, node: rcd->numa_id); |
| 46 | if (!rcd->groups) |
| 47 | return -ENOMEM; |
| 48 | tidbase = rcd->expected_base; |
| 49 | for (i = 0; i < ngroups; i++) { |
| 50 | grp = &rcd->groups[i]; |
| 51 | grp->size = dd->rcv_entries.group_size; |
| 52 | grp->base = tidbase; |
| 53 | tid_group_add_tail(grp, set: &rcd->tid_group_list); |
| 54 | tidbase += dd->rcv_entries.group_size; |
| 55 | } |
| 56 | |
| 57 | return 0; |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * hfi1_free_ctxt_rcv_groups - free expected receive groups |
| 62 | * @rcd: the context to free |
| 63 | * |
| 64 | * The routine dismantles the expect receive linked |
| 65 | * list and clears any tids associated with the receive |
| 66 | * context. |
| 67 | * |
| 68 | * This should only be called for kernel contexts and the |
| 69 | * a base user context. |
| 70 | */ |
| 71 | void hfi1_free_ctxt_rcv_groups(struct hfi1_ctxtdata *rcd) |
| 72 | { |
| 73 | kfree(objp: rcd->groups); |
| 74 | rcd->groups = NULL; |
| 75 | hfi1_exp_tid_group_init(rcd); |
| 76 | |
| 77 | hfi1_clear_tids(rcd); |
| 78 | } |
| 79 |