1 /* QLogic qed NIC Driver
2  * Copyright (c) 2015-2017  QLogic Corporation
3  *
4  * This software is available to you under a choice of one of two
5  * licenses.  You may choose to be licensed under the terms of the GNU
6  * General Public License (GPL) Version 2, available from the file
7  * COPYING in the main directory of this source tree, or the
8  * OpenIB.org BSD license below:
9  *
10  *     Redistribution and use in source and binary forms, with or
11  *     without modification, are permitted provided that the following
12  *     conditions are met:
13  *
14  *      - Redistributions of source code must retain the above
15  *        copyright notice, this list of conditions and the following
16  *        disclaimer.
17  *
18  *      - Redistributions in binary form must reproduce the above
19  *        copyright notice, this list of conditions and the following
20  *        disclaimer in the documentation and /or other materials
21  *        provided with the distribution.
22  *
23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30  * SOFTWARE.
31  */
32 
33 #ifndef _QED_DCBX_H
34 #define _QED_DCBX_H
35 #include <linux/types.h>
36 #include <linux/slab.h>
37 #include "qed.h"
38 #include "qed_hsi.h"
39 #include "qed_hw.h"
40 #include "qed_mcp.h"
41 #include "qed_reg_addr.h"
42 
43 #define DCBX_CONFIG_MAX_APP_PROTOCOL    4
44 
45 enum qed_mib_read_type {
46 	QED_DCBX_OPERATIONAL_MIB,
47 	QED_DCBX_REMOTE_MIB,
48 	QED_DCBX_LOCAL_MIB,
49 	QED_DCBX_REMOTE_LLDP_MIB,
50 	QED_DCBX_LOCAL_LLDP_MIB
51 };
52 
53 struct qed_dcbx_app_data {
54 	bool enable;		/* DCB enabled */
55 	u8 update;		/* Update indication */
56 	u8 priority;		/* Priority */
57 	u8 tc;			/* Traffic Class */
58 };
59 
60 #define QED_DCBX_VERSION_DISABLED       0
61 #define QED_DCBX_VERSION_IEEE           1
62 #define QED_DCBX_VERSION_CEE            2
63 
64 struct qed_dcbx_set {
65 #define QED_DCBX_OVERRIDE_STATE	        BIT(0)
66 #define QED_DCBX_OVERRIDE_PFC_CFG       BIT(1)
67 #define QED_DCBX_OVERRIDE_ETS_CFG       BIT(2)
68 #define QED_DCBX_OVERRIDE_APP_CFG       BIT(3)
69 #define QED_DCBX_OVERRIDE_DSCP_CFG      BIT(4)
70 	u32 override_flags;
71 	bool enabled;
72 	struct qed_dcbx_admin_params config;
73 	u32 ver_num;
74 };
75 
76 struct qed_dcbx_results {
77 	bool dcbx_enabled;
78 	u8 pf_id;
79 	struct qed_dcbx_app_data arr[DCBX_MAX_PROTOCOL_TYPE];
80 };
81 
82 struct qed_dcbx_app_metadata {
83 	enum dcbx_protocol_type id;
84 	char *name;
85 	enum qed_pci_personality personality;
86 };
87 
88 struct qed_dcbx_info {
89 	struct lldp_status_params_s lldp_remote[LLDP_MAX_LLDP_AGENTS];
90 	struct lldp_config_params_s lldp_local[LLDP_MAX_LLDP_AGENTS];
91 	struct dcbx_local_params local_admin;
92 	struct qed_dcbx_results results;
93 	struct dcbx_mib operational;
94 	struct dcbx_mib remote;
95 	struct qed_dcbx_set set;
96 	struct qed_dcbx_get get;
97 	u8 dcbx_cap;
98 };
99 
100 struct qed_dcbx_mib_meta_data {
101 	struct lldp_config_params_s *lldp_local;
102 	struct lldp_status_params_s *lldp_remote;
103 	struct dcbx_local_params *local_admin;
104 	struct dcbx_mib *mib;
105 	size_t size;
106 	u32 addr;
107 };
108 
109 #ifdef CONFIG_DCB
110 int qed_dcbx_get_config_params(struct qed_hwfn *, struct qed_dcbx_set *);
111 
112 int qed_dcbx_config_params(struct qed_hwfn *,
113 			   struct qed_ptt *, struct qed_dcbx_set *, bool);
114 #endif
115 
116 /* QED local interface routines */
117 int
118 qed_dcbx_mib_update_event(struct qed_hwfn *,
119 			  struct qed_ptt *, enum qed_mib_read_type);
120 
121 int qed_dcbx_info_alloc(struct qed_hwfn *p_hwfn);
122 void qed_dcbx_info_free(struct qed_hwfn *p_hwfn);
123 void qed_dcbx_set_pf_update_params(struct qed_dcbx_results *p_src,
124 				   struct pf_update_ramrod_data *p_dest);
125 
126 #define QED_DCBX_DEFAULT_TC	0
127 
128 u8 qed_dcbx_get_priority_tc(struct qed_hwfn *p_hwfn, u8 pri);
129 #endif
130