Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[linux-2.6.git] / drivers / net / bnx2x / bnx2x_dcb.h
1 /* bnx2x_dcb.h: Broadcom Everest network driver.
2  *
3  * Copyright 2009-2011 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 struct bnx2x_config_dcbx_params {
94         u32 overwrite_settings;
95         u32 admin_dcbx_version;
96         u32 admin_ets_enable;
97         u32 admin_pfc_enable;
98         u32 admin_tc_supported_tx_enable;
99         u32 admin_ets_configuration_tx_enable;
100         u32 admin_ets_recommendation_tx_enable;
101         u32 admin_pfc_tx_enable;
102         u32 admin_application_priority_tx_enable;
103         u32 admin_ets_willing;
104         u32 admin_ets_reco_valid;
105         u32 admin_pfc_willing;
106         u32 admin_app_priority_willing;
107         u32 admin_configuration_bw_precentage[8];
108         u32 admin_configuration_ets_pg[8];
109         u32 admin_recommendation_bw_precentage[8];
110         u32 admin_recommendation_ets_pg[8];
111         u32 admin_pfc_bitmap;
112         struct bnx2x_admin_priority_app_table admin_priority_app_table[4];
113         u32 admin_default_priority;
114 };
115
116 #define GET_FLAGS(flags, bits)          ((flags) & (bits))
117 #define SET_FLAGS(flags, bits)          ((flags) |= (bits))
118 #define RESET_FLAGS(flags, bits)        ((flags) &= ~(bits))
119
120 enum {
121         DCBX_READ_LOCAL_MIB,
122         DCBX_READ_REMOTE_MIB
123 };
124
125 #define ETH_TYPE_FCOE           (0x8906)
126 #define TCP_PORT_ISCSI          (0xCBC)
127
128 #define PFC_VALUE_FRAME_SIZE                            (512)
129 #define PFC_QUANTA_IN_NANOSEC_FROM_SPEED_MEGA(mega_speed)  \
130                                 ((1000 * PFC_VALUE_FRAME_SIZE)/(mega_speed))
131
132 #define PFC_BRB1_REG_HIGH_LLFC_LOW_THRESHOLD                    130
133 #define PFC_BRB1_REG_HIGH_LLFC_HIGH_THRESHOLD                   170
134
135
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
172 struct pg_entry_help_data {
173         u8      num_of_dif_pri;
174         u8      pg;
175         u32     pg_priority;
176 };
177
178 struct pg_help_data {
179         struct pg_entry_help_data       data[LLFC_DRIVER_TRAFFIC_TYPE_MAX];
180         u8                              num_of_pg;
181 };
182
183 /* forward DCB/PFC related declarations */
184 struct bnx2x;
185 void bnx2x_dcbx_update(struct work_struct *work);
186 void bnx2x_dcbx_init_params(struct bnx2x *bp);
187 void bnx2x_dcbx_set_state(struct bnx2x *bp, bool dcb_on, u32 dcbx_enabled);
188
189 enum {
190         BNX2X_DCBX_STATE_NEG_RECEIVED = 0x1,
191         BNX2X_DCBX_STATE_TX_PAUSED,
192         BNX2X_DCBX_STATE_TX_RELEASED
193 };
194
195 void bnx2x_dcbx_set_params(struct bnx2x *bp, u32 state);
196 void bnx2x_dcbx_pmf_update(struct bnx2x *bp);
197 /* DCB netlink */
198 #ifdef BCM_DCBNL
199 extern const struct dcbnl_rtnl_ops bnx2x_dcbnl_ops;
200 int bnx2x_dcbnl_update_applist(struct bnx2x *bp, bool delall);
201 #endif /* BCM_DCBNL */
202
203 #endif /* BNX2X_DCB_H */