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1 | /* |
2 | * This file is part of the Chelsio T4 Ethernet driver for Linux. | |
3 | * | |
4 | * Copyright (c) 2016 Chelsio Communications, Inc. All rights reserved. | |
5 | * | |
6 | * This software is available to you under a choice of one of two | |
7 | * licenses. You may choose to be licensed under the terms of the GNU | |
8 | * General Public License (GPL) Version 2, available from the file | |
9 | * COPYING in the main directory of this source tree, or the | |
10 | * OpenIB.org BSD license below: | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or | |
13 | * without modification, are permitted provided that the following | |
14 | * conditions are met: | |
15 | * | |
16 | * - Redistributions of source code must retain the above | |
17 | * copyright notice, this list of conditions and the following | |
18 | * disclaimer. | |
19 | * | |
20 | * - Redistributions in binary form must reproduce the above | |
21 | * copyright notice, this list of conditions and the following | |
22 | * disclaimer in the documentation and/or other materials | |
23 | * provided with the distribution. | |
24 | * | |
25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
26 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
27 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
28 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
29 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
30 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
31 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
32 | * SOFTWARE. | |
33 | */ | |
34 | ||
35 | #ifndef __CXGB4_SCHED_H | |
36 | #define __CXGB4_SCHED_H | |
37 | ||
38 | #include <linux/spinlock.h> | |
39 | #include <linux/atomic.h> | |
40 | ||
41 | #define SCHED_CLS_NONE 0xff | |
42 | ||
6cede1f1 RL |
43 | #define FW_SCHED_CLS_NONE 0xffffffff |
44 | ||
d185efc1 GG |
45 | /* Max rate that can be set to a scheduling class is 100 Gbps */ |
46 | #define SCHED_MAX_RATE_KBPS 100000000U | |
10a2604e | 47 | |
b72a32da RL |
48 | enum { |
49 | SCHED_STATE_ACTIVE, | |
50 | SCHED_STATE_UNUSED, | |
51 | }; | |
52 | ||
53 | enum sched_fw_ops { | |
54 | SCHED_FW_OP_ADD, | |
4ec4762d | 55 | SCHED_FW_OP_DEL, |
b72a32da RL |
56 | }; |
57 | ||
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58 | enum sched_bind_type { |
59 | SCHED_QUEUE, | |
0e395b3c | 60 | SCHED_FLOWC, |
6cede1f1 RL |
61 | }; |
62 | ||
63 | struct sched_queue_entry { | |
64 | struct list_head list; | |
65 | unsigned int cntxt_id; | |
66 | struct ch_sched_queue param; | |
67 | }; | |
68 | ||
0e395b3c RL |
69 | struct sched_flowc_entry { |
70 | struct list_head list; | |
71 | struct ch_sched_flowc param; | |
72 | }; | |
73 | ||
b72a32da RL |
74 | struct sched_class { |
75 | u8 state; | |
76 | u8 idx; | |
77 | struct ch_sched_params info; | |
0e395b3c RL |
78 | enum sched_bind_type bind_type; |
79 | struct list_head entry_list; | |
b72a32da RL |
80 | atomic_t refcnt; |
81 | }; | |
82 | ||
83 | struct sched_table { /* per port scheduling table */ | |
84 | u8 sched_size; | |
ceba9725 | 85 | struct sched_class tab[] __counted_by(sched_size); |
b72a32da RL |
86 | }; |
87 | ||
88 | static inline bool can_sched(struct net_device *dev) | |
89 | { | |
90 | struct port_info *pi = netdev2pinfo(dev); | |
91 | ||
92 | return !pi->sched_tbl ? false : true; | |
93 | } | |
94 | ||
95 | static inline bool valid_class_id(struct net_device *dev, u8 class_id) | |
96 | { | |
97 | struct port_info *pi = netdev2pinfo(dev); | |
98 | ||
99 | if ((class_id > pi->sched_tbl->sched_size - 1) && | |
100 | (class_id != SCHED_CLS_NONE)) | |
101 | return false; | |
102 | ||
103 | return true; | |
104 | } | |
105 | ||
c856e2b6 RL |
106 | struct sched_class *cxgb4_sched_queue_lookup(struct net_device *dev, |
107 | struct ch_sched_queue *p); | |
6cede1f1 RL |
108 | int cxgb4_sched_class_bind(struct net_device *dev, void *arg, |
109 | enum sched_bind_type type); | |
110 | int cxgb4_sched_class_unbind(struct net_device *dev, void *arg, | |
111 | enum sched_bind_type type); | |
112 | ||
b72a32da RL |
113 | struct sched_class *cxgb4_sched_class_alloc(struct net_device *dev, |
114 | struct ch_sched_params *p); | |
0e395b3c | 115 | void cxgb4_sched_class_free(struct net_device *dev, u8 classid); |
b72a32da RL |
116 | |
117 | struct sched_table *t4_init_sched(unsigned int size); | |
118 | void t4_cleanup_sched(struct adapter *adap); | |
119 | #endif /* __CXGB4_SCHED_H */ |