1 /* bnx2x_dcb.h: Broadcom Everest network driver.
2  *
3  * Copyright 2009-2013 Broadcom Corporation
4  *
5  * Unless you and Broadcom execute a separate written software license
6  * agreement governing use of this software, this software is licensed to you
7  * under the terms of the GNU General Public License version 2, available
8  * at http://www.gnu.org/licenses/old-licenses/gpl-2.0.html (the "GPL").
9  *
10  * Notwithstanding the above, under no circumstances may you combine this
11  * software in any way with any other Broadcom software provided under a
12  * license other than the GPL, without Broadcom's express prior written
13  * consent.
14  *
15  * Maintained by: Eilon Greenstein <eilong@broadcom.com>
16  * Written by: Dmitry Kravkov
17  *
18  */
19 #ifndef BNX2X_DCB_H
20 #define BNX2X_DCB_H
21 
22 #include "bnx2x_hsi.h"
23 
24 #define LLFC_DRIVER_TRAFFIC_TYPE_MAX 3 /* NW, iSCSI, FCoE */
25 struct bnx2x_dcbx_app_params {
26 	u32 enabled;
27 	u32 traffic_type_priority[LLFC_DRIVER_TRAFFIC_TYPE_MAX];
28 };
29 
30 #define DCBX_COS_MAX_NUM_E2	DCBX_E2E3_MAX_NUM_COS
31 /* bnx2x currently limits numbers of supported COSes to 3 to be extended to 6 */
32 #define BNX2X_MAX_COS_SUPPORT	3
33 #define DCBX_COS_MAX_NUM_E3B0	BNX2X_MAX_COS_SUPPORT
34 #define DCBX_COS_MAX_NUM	BNX2X_MAX_COS_SUPPORT
35 
36 struct bnx2x_dcbx_cos_params {
37 	u32	bw_tbl;
38 	u32	pri_bitmask;
39 	/*
40 	 * strict priority: valid values are 0..5; 0 is highest priority.
41 	 * There can't be two COSes with the same priority.
42 	 */
43 	u8	strict;
44 #define BNX2X_DCBX_STRICT_INVALID			DCBX_COS_MAX_NUM
45 #define BNX2X_DCBX_STRICT_COS_HIGHEST			0
46 #define BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(sp)	((sp) + 1)
47 	u8	pauseable;
48 };
49 
50 struct bnx2x_dcbx_pg_params {
51 	u32 enabled;
52 	u8 num_of_cos; /* valid COS entries */
53 	struct bnx2x_dcbx_cos_params	cos_params[DCBX_COS_MAX_NUM];
54 };
55 
56 struct bnx2x_dcbx_pfc_params {
57 	u32 enabled;
58 	u32 priority_non_pauseable_mask;
59 };
60 
61 struct bnx2x_dcbx_port_params {
62 	struct bnx2x_dcbx_pfc_params pfc;
63 	struct bnx2x_dcbx_pg_params  ets;
64 	struct bnx2x_dcbx_app_params app;
65 };
66 
67 #define BNX2X_DCBX_CONFIG_INV_VALUE			(0xFFFFFFFF)
68 #define BNX2X_DCBX_OVERWRITE_SETTINGS_DISABLE		0
69 #define BNX2X_DCBX_OVERWRITE_SETTINGS_ENABLE		1
70 #define BNX2X_DCBX_OVERWRITE_SETTINGS_INVALID	(BNX2X_DCBX_CONFIG_INV_VALUE)
71 #define BNX2X_IS_ETS_ENABLED(bp) ((bp)->dcb_state == BNX2X_DCB_STATE_ON &&\
72 				  (bp)->dcbx_port_params.ets.enabled)
73 
74 struct bnx2x_config_lldp_params {
75 	u32 overwrite_settings;
76 	u32 msg_tx_hold;
77 	u32 msg_fast_tx;
78 	u32 tx_credit_max;
79 	u32 msg_tx_interval;
80 	u32 tx_fast;
81 };
82 
83 struct bnx2x_admin_priority_app_table {
84 		u32 valid;
85 		u32 priority;
86 #define INVALID_TRAFFIC_TYPE_PRIORITY	(0xFFFFFFFF)
87 		u32 traffic_type;
88 #define TRAFFIC_TYPE_ETH		0
89 #define TRAFFIC_TYPE_PORT		1
90 		u32 app_id;
91 };
92 
93 #define DCBX_CONFIG_MAX_APP_PROTOCOL 4
94 struct bnx2x_config_dcbx_params {
95 	u32 overwrite_settings;
96 	u32 admin_dcbx_version;
97 	u32 admin_ets_enable;
98 	u32 admin_pfc_enable;
99 	u32 admin_tc_supported_tx_enable;
100 	u32 admin_ets_configuration_tx_enable;
101 	u32 admin_ets_recommendation_tx_enable;
102 	u32 admin_pfc_tx_enable;
103 	u32 admin_application_priority_tx_enable;
104 	u32 admin_ets_willing;
105 	u32 admin_ets_reco_valid;
106 	u32 admin_pfc_willing;
107 	u32 admin_app_priority_willing;
108 	u32 admin_configuration_bw_precentage[8];
109 	u32 admin_configuration_ets_pg[8];
110 	u32 admin_recommendation_bw_precentage[8];
111 	u32 admin_recommendation_ets_pg[8];
112 	u32 admin_pfc_bitmap;
113 	struct bnx2x_admin_priority_app_table
114 		admin_priority_app_table[DCBX_CONFIG_MAX_APP_PROTOCOL];
115 	u32 admin_default_priority;
116 };
117 
118 #define GET_FLAGS(flags, bits)		((flags) & (bits))
119 #define SET_FLAGS(flags, bits)		((flags) |= (bits))
120 #define RESET_FLAGS(flags, bits)	((flags) &= ~(bits))
121 
122 enum {
123 	DCBX_READ_LOCAL_MIB,
124 	DCBX_READ_REMOTE_MIB
125 };
126 
127 #define ETH_TYPE_FCOE		(0x8906)
128 #define TCP_PORT_ISCSI		(0xCBC)
129 
130 #define PFC_VALUE_FRAME_SIZE				(512)
131 #define PFC_QUANTA_IN_NANOSEC_FROM_SPEED_MEGA(mega_speed)  \
132 				((1000 * PFC_VALUE_FRAME_SIZE)/(mega_speed))
133 
134 #define PFC_BRB1_REG_HIGH_LLFC_LOW_THRESHOLD			130
135 #define PFC_BRB1_REG_HIGH_LLFC_HIGH_THRESHOLD			170
136 
137 struct cos_entry_help_data {
138 	u32			pri_join_mask;
139 	u32			cos_bw;
140 	u8			strict;
141 	bool			pausable;
142 };
143 
144 struct cos_help_data {
145 	struct cos_entry_help_data	data[DCBX_COS_MAX_NUM];
146 	u8				num_of_cos;
147 };
148 
149 #define DCBX_ILLEGAL_PG				(0xFF)
150 #define DCBX_PFC_PRI_MASK			(0xFF)
151 #define DCBX_STRICT_PRIORITY			(15)
152 #define DCBX_INVALID_COS_BW			(0xFFFFFFFF)
153 #define DCBX_PFC_PRI_NON_PAUSE_MASK(bp)		\
154 			((bp)->dcbx_port_params.pfc.priority_non_pauseable_mask)
155 #define DCBX_PFC_PRI_PAUSE_MASK(bp)		\
156 					((u8)~DCBX_PFC_PRI_NON_PAUSE_MASK(bp))
157 #define DCBX_PFC_PRI_GET_PAUSE(bp, pg_pri)	\
158 				((pg_pri) & (DCBX_PFC_PRI_PAUSE_MASK(bp)))
159 #define DCBX_PFC_PRI_GET_NON_PAUSE(bp, pg_pri)	\
160 			(DCBX_PFC_PRI_NON_PAUSE_MASK(bp) & (pg_pri))
161 #define DCBX_IS_PFC_PRI_SOME_PAUSE(bp, pg_pri)	\
162 			(0 != DCBX_PFC_PRI_GET_PAUSE(bp, pg_pri))
163 #define IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pg_pri)	\
164 			(pg_pri == DCBX_PFC_PRI_GET_PAUSE((bp), (pg_pri)))
165 #define IS_DCBX_PFC_PRI_ONLY_NON_PAUSE(bp, pg_pri)\
166 			((pg_pri) == DCBX_PFC_PRI_GET_NON_PAUSE((bp), (pg_pri)))
167 #define IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pg_pri)	\
168 			(!(IS_DCBX_PFC_PRI_ONLY_NON_PAUSE((bp), (pg_pri)) || \
169 			 IS_DCBX_PFC_PRI_ONLY_PAUSE((bp), (pg_pri))))
170 
171 struct pg_entry_help_data {
172 	u8	num_of_dif_pri;
173 	u8	pg;
174 	u32	pg_priority;
175 };
176 
177 struct pg_help_data {
178 	struct pg_entry_help_data	data[LLFC_DRIVER_TRAFFIC_TYPE_MAX];
179 	u8				num_of_pg;
180 };
181 
182 /* forward DCB/PFC related declarations */
183 struct bnx2x;
184 void bnx2x_dcbx_update(struct work_struct *work);
185 void bnx2x_dcbx_init_params(struct bnx2x *bp);
186 void bnx2x_dcbx_set_state(struct bnx2x *bp, bool dcb_on, u32 dcbx_enabled);
187 
188 enum {
189 	BNX2X_DCBX_STATE_NEG_RECEIVED = 0x1,
190 	BNX2X_DCBX_STATE_TX_PAUSED,
191 	BNX2X_DCBX_STATE_TX_RELEASED
192 };
193 
194 void bnx2x_dcbx_set_params(struct bnx2x *bp, u32 state);
195 void bnx2x_dcbx_pmf_update(struct bnx2x *bp);
196 /* DCB netlink */
197 #ifdef BCM_DCBNL
198 extern const struct dcbnl_rtnl_ops bnx2x_dcbnl_ops;
199 int bnx2x_dcbnl_update_applist(struct bnx2x *bp, bool delall);
200 #endif /* BCM_DCBNL */
201 
202 int bnx2x_dcbx_stop_hw_tx(struct bnx2x *bp);
203 int bnx2x_dcbx_resume_hw_tx(struct bnx2x *bp);
204 
205 #endif /* BNX2X_DCB_H */
206