bnx2x_dcb.h revision e4901dde12d92b70dd13fa8b3bbc9df7a6129aab 
1/* bnx2x_dcb.h: Broadcom Everest network driver.
2 *
3 * Copyright 2009-2010 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 */
25struct bnx2x_dcbx_app_params {
26	u32 enabled;
27	u32 traffic_type_priority[LLFC_DRIVER_TRAFFIC_TYPE_MAX];
28};
29
30#define E2_NUM_OF_COS			2
31#define BNX2X_DCBX_COS_NOT_STRICT	0
32#define BNX2X_DCBX_COS_LOW_STRICT	1
33#define BNX2X_DCBX_COS_HIGH_STRICT	2
34
35struct bnx2x_dcbx_cos_params {
36	u32	bw_tbl;
37	u32	pri_bitmask;
38	u8	strict;
39	u8	pauseable;
40};
41
42struct bnx2x_dcbx_pg_params {
43	u32 enabled;
44	u8 num_of_cos; /* valid COS entries */
45	struct bnx2x_dcbx_cos_params	cos_params[E2_NUM_OF_COS];
46};
47
48struct bnx2x_dcbx_pfc_params {
49	u32 enabled;
50	u32 priority_non_pauseable_mask;
51};
52
53struct bnx2x_dcbx_port_params {
54	u32 dcbx_enabled;
55	struct bnx2x_dcbx_pfc_params pfc;
56	struct bnx2x_dcbx_pg_params  ets;
57	struct bnx2x_dcbx_app_params app;
58};
59
60#define BNX2X_DCBX_CONFIG_INV_VALUE			(0xFFFFFFFF)
61#define BNX2X_DCBX_OVERWRITE_SETTINGS_DISABLE		0
62#define BNX2X_DCBX_OVERWRITE_SETTINGS_ENABLE		1
63#define BNX2X_DCBX_OVERWRITE_SETTINGS_INVALID	(BNX2X_DCBX_CONFIG_INV_VALUE)
64
65/*******************************************************************************
66 * LLDP protocol configuration parameters.
67 ******************************************************************************/
68struct bnx2x_config_lldp_params {
69	u32 overwrite_settings;
70	u32 msg_tx_hold;
71	u32 msg_fast_tx;
72	u32 tx_credit_max;
73	u32 msg_tx_interval;
74	u32 tx_fast;
75};
76
77struct bnx2x_admin_priority_app_table {
78		u32 valid;
79		u32 priority;
80#define INVALID_TRAFFIC_TYPE_PRIORITY	(0xFFFFFFFF)
81		u32 traffic_type;
82#define TRAFFIC_TYPE_ETH		0
83#define TRAFFIC_TYPE_PORT		1
84		u32 app_id;
85};
86
87/*******************************************************************************
88 * DCBX protocol configuration parameters.
89 ******************************************************************************/
90struct bnx2x_config_dcbx_params {
91	u32 dcb_enable;
92	u32 admin_dcbx_enable;
93	u32 overwrite_settings;
94	u32 admin_dcbx_version;
95	u32 admin_ets_enable;
96	u32 admin_pfc_enable;
97	u32 admin_tc_supported_tx_enable;
98	u32 admin_ets_configuration_tx_enable;
99	u32 admin_ets_recommendation_tx_enable;
100	u32 admin_pfc_tx_enable;
101	u32 admin_application_priority_tx_enable;
102	u32 admin_ets_willing;
103	u32 admin_ets_reco_valid;
104	u32 admin_pfc_willing;
105	u32 admin_app_priority_willing;
106	u32 admin_configuration_bw_precentage[8];
107	u32 admin_configuration_ets_pg[8];
108	u32 admin_recommendation_bw_precentage[8];
109	u32 admin_recommendation_ets_pg[8];
110	u32 admin_pfc_bitmap;
111	struct bnx2x_admin_priority_app_table admin_priority_app_table[4];
112	u32 admin_default_priority;
113};
114
115#define GET_FLAGS(flags, bits)		((flags) & (bits))
116#define SET_FLAGS(flags, bits)		((flags) |= (bits))
117#define RESET_FLAGS(flags, bits)	((flags) &= ~(bits))
118
119enum {
120	DCBX_READ_LOCAL_MIB,
121	DCBX_READ_REMOTE_MIB
122};
123
124#define ETH_TYPE_FCOE		(0x8906)
125#define TCP_PORT_ISCSI		(0xCBC)
126
127#define PFC_VALUE_FRAME_SIZE				(512)
128#define PFC_QUANTA_IN_NANOSEC_FROM_SPEED_MEGA(mega_speed)  \
129				((1000 * PFC_VALUE_FRAME_SIZE)/(mega_speed))
130
131#define PFC_BRB1_REG_HIGH_LLFC_LOW_THRESHOLD			130
132#define PFC_BRB1_REG_HIGH_LLFC_HIGH_THRESHOLD			170
133
134
135
136struct cos_entry_help_data {
137	u32			pri_join_mask;
138	u32			cos_bw;
139	u8			strict;
140	bool			pausable;
141};
142
143struct cos_help_data {
144	struct cos_entry_help_data	data[E2_NUM_OF_COS];
145	u8				num_of_cos;
146};
147
148#define DCBX_ILLEGAL_PG				(0xFF)
149#define DCBX_PFC_PRI_MASK			(0xFF)
150#define DCBX_STRICT_PRIORITY			(15)
151#define DCBX_INVALID_COS_BW			(0xFFFFFFFF)
152#define DCBX_PFC_PRI_NON_PAUSE_MASK(bp)		\
153			((bp)->dcbx_port_params.pfc.priority_non_pauseable_mask)
154#define DCBX_PFC_PRI_PAUSE_MASK(bp)		\
155					((u8)~DCBX_PFC_PRI_NON_PAUSE_MASK(bp))
156#define DCBX_PFC_PRI_GET_PAUSE(bp, pg_pri)	\
157				((pg_pri) & (DCBX_PFC_PRI_PAUSE_MASK(bp)))
158#define DCBX_PFC_PRI_GET_NON_PAUSE(bp, pg_pri)	\
159			(DCBX_PFC_PRI_NON_PAUSE_MASK(bp) & (pg_pri))
160#define IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pg_pri)	\
161			(pg_pri == DCBX_PFC_PRI_GET_PAUSE((bp), (pg_pri)))
162#define IS_DCBX_PFC_PRI_ONLY_NON_PAUSE(bp, pg_pri)\
163			((pg_pri) == DCBX_PFC_PRI_GET_NON_PAUSE((bp), (pg_pri)))
164#define IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pg_pri)	\
165			(!(IS_DCBX_PFC_PRI_ONLY_NON_PAUSE((bp), (pg_pri)) || \
166			 IS_DCBX_PFC_PRI_ONLY_PAUSE((bp), (pg_pri))))
167
168
169struct pg_entry_help_data {
170	u8	num_of_dif_pri;
171	u8	pg;
172	u32	pg_priority;
173};
174
175struct pg_help_data {
176	struct pg_entry_help_data	data[LLFC_DRIVER_TRAFFIC_TYPE_MAX];
177	u8				num_of_pg;
178};
179
180/* forward DCB/PFC related declarations */
181struct bnx2x;
182void bnx2x_dcb_init_intmem_pfc(struct bnx2x *bp);
183void bnx2x_dcbx_update(struct work_struct *work);
184void bnx2x_dcbx_init_params(struct bnx2x *bp);
185
186enum {
187	BNX2X_DCBX_STATE_NEG_RECEIVED = 0x1,
188	BNX2X_DCBX_STATE_TX_PAUSED = 0x2,
189	BNX2X_DCBX_STATE_TX_RELEASED = 0x4
190};
191void bnx2x_dcbx_set_params(struct bnx2x *bp, u32 state);
192
193#endif /* BNX2X_DCB_H */
194