xref: /linux/drivers/net/ethernet/intel/i40e/i40e_dcb.h (revision 75428f53)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright(c) 2013 - 2021 Intel Corporation. */
3 
4 #ifndef _I40E_DCB_H_
5 #define _I40E_DCB_H_
6 
7 #include "i40e_type.h"
8 
9 #define I40E_DCBX_STATUS_NOT_STARTED	0
10 #define I40E_DCBX_STATUS_IN_PROGRESS	1
11 #define I40E_DCBX_STATUS_DONE		2
12 #define I40E_DCBX_STATUS_MULTIPLE_PEERS	3
13 #define I40E_DCBX_STATUS_DISABLED	7
14 
15 #define I40E_TLV_TYPE_END		0
16 #define I40E_TLV_TYPE_ORG		127
17 
18 #define I40E_IEEE_8021QAZ_OUI		0x0080C2
19 #define I40E_IEEE_SUBTYPE_ETS_CFG	9
20 #define I40E_IEEE_SUBTYPE_ETS_REC	10
21 #define I40E_IEEE_SUBTYPE_PFC_CFG	11
22 #define I40E_IEEE_SUBTYPE_APP_PRI	12
23 
24 #define I40E_CEE_DCBX_OUI		0x001b21
25 #define I40E_CEE_DCBX_TYPE		2
26 
27 #define I40E_CEE_SUBTYPE_CTRL		1
28 #define I40E_CEE_SUBTYPE_PG_CFG		2
29 #define I40E_CEE_SUBTYPE_PFC_CFG	3
30 #define I40E_CEE_SUBTYPE_APP_PRI	4
31 
32 #define I40E_CEE_MAX_FEAT_TYPE		3
33 #define I40E_LLDP_CURRENT_STATUS_XL710_OFFSET	0x2B
34 #define I40E_LLDP_CURRENT_STATUS_X722_OFFSET	0x31
35 #define I40E_LLDP_CURRENT_STATUS_OFFSET		1
36 #define I40E_LLDP_CURRENT_STATUS_SIZE		1
37 
38 /* Defines for LLDP TLV header */
39 #define I40E_LLDP_TLV_LEN_SHIFT		0
40 #define I40E_LLDP_TLV_LEN_MASK		(0x01FF << I40E_LLDP_TLV_LEN_SHIFT)
41 #define I40E_LLDP_TLV_TYPE_SHIFT	9
42 #define I40E_LLDP_TLV_TYPE_MASK		(0x7F << I40E_LLDP_TLV_TYPE_SHIFT)
43 #define I40E_LLDP_TLV_SUBTYPE_SHIFT	0
44 #define I40E_LLDP_TLV_SUBTYPE_MASK	(0xFF << I40E_LLDP_TLV_SUBTYPE_SHIFT)
45 #define I40E_LLDP_TLV_OUI_SHIFT		8
46 #define I40E_LLDP_TLV_OUI_MASK		(0xFFFFFFU << I40E_LLDP_TLV_OUI_SHIFT)
47 
48 /* Defines for IEEE ETS TLV */
49 #define I40E_IEEE_ETS_MAXTC_SHIFT	0
50 #define I40E_IEEE_ETS_MAXTC_MASK	(0x7 << I40E_IEEE_ETS_MAXTC_SHIFT)
51 #define I40E_IEEE_ETS_CBS_SHIFT		6
52 #define I40E_IEEE_ETS_CBS_MASK		BIT(I40E_IEEE_ETS_CBS_SHIFT)
53 #define I40E_IEEE_ETS_WILLING_SHIFT	7
54 #define I40E_IEEE_ETS_WILLING_MASK	BIT(I40E_IEEE_ETS_WILLING_SHIFT)
55 #define I40E_IEEE_ETS_PRIO_0_SHIFT	0
56 #define I40E_IEEE_ETS_PRIO_0_MASK	(0x7 << I40E_IEEE_ETS_PRIO_0_SHIFT)
57 #define I40E_IEEE_ETS_PRIO_1_SHIFT	4
58 #define I40E_IEEE_ETS_PRIO_1_MASK	(0x7 << I40E_IEEE_ETS_PRIO_1_SHIFT)
59 #define I40E_CEE_PGID_PRIO_0_SHIFT	0
60 #define I40E_CEE_PGID_PRIO_0_MASK	(0xF << I40E_CEE_PGID_PRIO_0_SHIFT)
61 #define I40E_CEE_PGID_PRIO_1_SHIFT	4
62 #define I40E_CEE_PGID_PRIO_1_MASK	(0xF << I40E_CEE_PGID_PRIO_1_SHIFT)
63 #define I40E_CEE_PGID_STRICT		15
64 
65 /* Defines for IEEE TSA types */
66 #define I40E_IEEE_TSA_STRICT		0
67 #define I40E_IEEE_TSA_ETS		2
68 
69 /* Defines for IEEE PFC TLV */
70 #define I40E_DCB_PFC_ENABLED		2
71 #define I40E_DCB_PFC_FORCED_NUM_TC	2
72 #define I40E_IEEE_PFC_CAP_SHIFT		0
73 #define I40E_IEEE_PFC_CAP_MASK		(0xF << I40E_IEEE_PFC_CAP_SHIFT)
74 #define I40E_IEEE_PFC_MBC_SHIFT		6
75 #define I40E_IEEE_PFC_MBC_MASK		BIT(I40E_IEEE_PFC_MBC_SHIFT)
76 #define I40E_IEEE_PFC_WILLING_SHIFT	7
77 #define I40E_IEEE_PFC_WILLING_MASK	BIT(I40E_IEEE_PFC_WILLING_SHIFT)
78 
79 /* Defines for IEEE APP TLV */
80 #define I40E_IEEE_APP_SEL_SHIFT		0
81 #define I40E_IEEE_APP_SEL_MASK		(0x7 << I40E_IEEE_APP_SEL_SHIFT)
82 #define I40E_IEEE_APP_PRIO_SHIFT	5
83 #define I40E_IEEE_APP_PRIO_MASK		(0x7 << I40E_IEEE_APP_PRIO_SHIFT)
84 
85 /* TLV definitions for preparing MIB */
86 #define I40E_TLV_ID_CHASSIS_ID		0
87 #define I40E_TLV_ID_PORT_ID		1
88 #define I40E_TLV_ID_TIME_TO_LIVE	2
89 #define I40E_IEEE_TLV_ID_ETS_CFG	3
90 #define I40E_IEEE_TLV_ID_ETS_REC	4
91 #define I40E_IEEE_TLV_ID_PFC_CFG	5
92 #define I40E_IEEE_TLV_ID_APP_PRI	6
93 #define I40E_TLV_ID_END_OF_LLDPPDU	7
94 #define I40E_TLV_ID_START		I40E_IEEE_TLV_ID_ETS_CFG
95 
96 #define I40E_IEEE_TLV_HEADER_LENGTH	2
97 #define I40E_IEEE_ETS_TLV_LENGTH	25
98 #define I40E_IEEE_PFC_TLV_LENGTH	6
99 #define I40E_IEEE_APP_TLV_LENGTH	11
100 
101 /* Defines for default SW DCB config */
102 #define I40E_IEEE_DEFAULT_ETS_TCBW	100
103 #define I40E_IEEE_DEFAULT_ETS_WILLING	1
104 #define I40E_IEEE_DEFAULT_PFC_WILLING	1
105 #define I40E_IEEE_DEFAULT_NUM_APPS	1
106 #define I40E_IEEE_DEFAULT_APP_PRIO	3
107 
108 #pragma pack(1)
109 /* IEEE 802.1AB LLDP Organization specific TLV */
110 struct i40e_lldp_org_tlv {
111 	__be16 typelength;
112 	__be32 ouisubtype;
113 	u8 tlvinfo[1];
114 };
115 
116 struct i40e_cee_tlv_hdr {
117 	__be16 typelen;
118 	u8 operver;
119 	u8 maxver;
120 };
121 
122 struct i40e_cee_ctrl_tlv {
123 	struct i40e_cee_tlv_hdr hdr;
124 	__be32 seqno;
125 	__be32 ackno;
126 };
127 
128 struct i40e_cee_feat_tlv {
129 	struct i40e_cee_tlv_hdr hdr;
130 	u8 en_will_err; /* Bits: |En|Will|Err|Reserved(5)| */
131 #define I40E_CEE_FEAT_TLV_ENABLE_MASK	0x80
132 #define I40E_CEE_FEAT_TLV_WILLING_MASK	0x40
133 #define I40E_CEE_FEAT_TLV_ERR_MASK	0x20
134 	u8 subtype;
135 	u8 tlvinfo[1];
136 };
137 
138 struct i40e_cee_app_prio {
139 	__be16 protocol;
140 	u8 upper_oui_sel; /* Bits: |Upper OUI(6)|Selector(2)| */
141 #define I40E_CEE_APP_SELECTOR_MASK	0x03
142 	__be16 lower_oui;
143 	u8 prio_map;
144 };
145 #pragma pack()
146 
147 enum i40e_get_fw_lldp_status_resp {
148 	I40E_GET_FW_LLDP_STATUS_DISABLED = 0,
149 	I40E_GET_FW_LLDP_STATUS_ENABLED = 1
150 };
151 
152 /* Data structures to pass for SW DCBX */
153 struct i40e_rx_pb_config {
154 	u32	shared_pool_size;
155 	u32	shared_pool_high_wm;
156 	u32	shared_pool_low_wm;
157 	u32	shared_pool_high_thresh[I40E_MAX_TRAFFIC_CLASS];
158 	u32	shared_pool_low_thresh[I40E_MAX_TRAFFIC_CLASS];
159 	u32	tc_pool_size[I40E_MAX_TRAFFIC_CLASS];
160 	u32	tc_pool_high_wm[I40E_MAX_TRAFFIC_CLASS];
161 	u32	tc_pool_low_wm[I40E_MAX_TRAFFIC_CLASS];
162 };
163 
164 enum i40e_dcb_arbiter_mode {
165 	I40E_DCB_ARB_MODE_STRICT_PRIORITY = 0,
166 	I40E_DCB_ARB_MODE_ROUND_ROBIN = 1
167 };
168 
169 #define I40E_DCB_DEFAULT_MAX_EXPONENT		0xB
170 #define I40E_DEFAULT_PAUSE_TIME			0xffff
171 #define I40E_MAX_FRAME_SIZE			4608 /* 4.5 KB */
172 
173 #define I40E_DEVICE_RPB_SIZE			968000 /* 968 KB */
174 
175 /* BitTimes (BT) conversion */
176 #define I40E_BT2KB(BT) (((BT) + (8 * 1024 - 1)) / (8 * 1024))
177 #define I40E_B2BT(BT) ((BT) * 8)
178 #define I40E_BT2B(BT) (((BT) + (8 - 1)) / 8)
179 
180 /* Max Frame(TC) = MFS(max) + MFS(TC) */
181 #define I40E_MAX_FRAME_TC(mfs_max, mfs_tc)	I40E_B2BT((mfs_max) + (mfs_tc))
182 
183 /* EEE Tx LPI Exit time in Bit Times */
184 #define I40E_EEE_TX_LPI_EXIT_TIME		142500
185 
186 /* PCI Round Trip Time in Bit Times */
187 #define I40E_PCIRTT_LINK_SPEED_10G		20000
188 #define I40E_PCIRTT_BYTE_LINK_SPEED_20G		40000
189 #define I40E_PCIRTT_BYTE_LINK_SPEED_40G		80000
190 
191 /* PFC Frame Delay Bit Times */
192 #define I40E_PFC_FRAME_DELAY			672
193 
194 /* Worst case Cable (10GBase-T) Delay Bit Times */
195 #define I40E_CABLE_DELAY			5556
196 
197 /* Higher Layer Delay @10G Bit Times */
198 #define I40E_HIGHER_LAYER_DELAY_10G		6144
199 
200 /* Interface Delays in Bit Times */
201 /* TODO: Add for other link speeds 20G/40G/etc. */
202 #define I40E_INTERFACE_DELAY_10G_MAC_CONTROL	8192
203 #define I40E_INTERFACE_DELAY_10G_MAC		8192
204 #define I40E_INTERFACE_DELAY_10G_RS		8192
205 
206 #define I40E_INTERFACE_DELAY_XGXS		2048
207 #define I40E_INTERFACE_DELAY_XAUI		2048
208 
209 #define I40E_INTERFACE_DELAY_10G_BASEX_PCS	2048
210 #define I40E_INTERFACE_DELAY_10G_BASER_PCS	3584
211 #define I40E_INTERFACE_DELAY_LX4_PMD		512
212 #define I40E_INTERFACE_DELAY_CX4_PMD		512
213 #define I40E_INTERFACE_DELAY_SERIAL_PMA		512
214 #define I40E_INTERFACE_DELAY_PMD		512
215 
216 #define I40E_INTERFACE_DELAY_10G_BASET		25600
217 
218 /* Hardware RX DCB config related defines */
219 #define I40E_DCB_1_PORT_THRESHOLD		0xF
220 #define I40E_DCB_1_PORT_FIFO_SIZE		0x10
221 #define I40E_DCB_2_PORT_THRESHOLD_LOW_NUM_TC	0xF
222 #define I40E_DCB_2_PORT_FIFO_SIZE_LOW_NUM_TC	0x10
223 #define I40E_DCB_2_PORT_THRESHOLD_HIGH_NUM_TC	0xC
224 #define I40E_DCB_2_PORT_FIFO_SIZE_HIGH_NUM_TC	0x8
225 #define I40E_DCB_4_PORT_THRESHOLD_LOW_NUM_TC	0x9
226 #define I40E_DCB_4_PORT_FIFO_SIZE_LOW_NUM_TC	0x8
227 #define I40E_DCB_4_PORT_THRESHOLD_HIGH_NUM_TC	0x6
228 #define I40E_DCB_4_PORT_FIFO_SIZE_HIGH_NUM_TC	0x4
229 #define I40E_DCB_WATERMARK_START_FACTOR		0x2
230 
231 /* delay values for with 10G BaseT in Bit Times */
232 #define I40E_INTERFACE_DELAY_10G_COPPER	\
233 	(I40E_INTERFACE_DELAY_10G_MAC + (2 * I40E_INTERFACE_DELAY_XAUI) \
234 	 + I40E_INTERFACE_DELAY_10G_BASET)
235 #define I40E_DV_TC(mfs_max, mfs_tc) \
236 		((2 * I40E_MAX_FRAME_TC(mfs_max, mfs_tc)) \
237 		 + I40E_PFC_FRAME_DELAY \
238 		 + (2 * I40E_CABLE_DELAY) \
239 		 + (2 * I40E_INTERFACE_DELAY_10G_COPPER) \
240 		 + I40E_HIGHER_LAYER_DELAY_10G)
I40E_STD_DV_TC(u32 mfs_max,u32 mfs_tc)241 static inline u32 I40E_STD_DV_TC(u32 mfs_max, u32 mfs_tc)
242 {
243 	return I40E_DV_TC(mfs_max, mfs_tc) + I40E_B2BT(mfs_max);
244 }
245 
246 /* APIs for SW DCBX */
247 void i40e_dcb_hw_rx_fifo_config(struct i40e_hw *hw,
248 				enum i40e_dcb_arbiter_mode ets_mode,
249 				enum i40e_dcb_arbiter_mode non_ets_mode,
250 				u32 max_exponent, u8 lltc_map);
251 void i40e_dcb_hw_rx_cmd_monitor_config(struct i40e_hw *hw,
252 				       u8 num_tc, u8 num_ports);
253 void i40e_dcb_hw_pfc_config(struct i40e_hw *hw,
254 			    u8 pfc_en, u8 *prio_tc);
255 void i40e_dcb_hw_set_num_tc(struct i40e_hw *hw, u8 num_tc);
256 u8 i40e_dcb_hw_get_num_tc(struct i40e_hw *hw);
257 void i40e_dcb_hw_rx_ets_bw_config(struct i40e_hw *hw, u8 *bw_share,
258 				  u8 *mode, u8 *prio_type);
259 void i40e_dcb_hw_rx_up2tc_config(struct i40e_hw *hw, u8 *prio_tc);
260 void i40e_dcb_hw_calculate_pool_sizes(struct i40e_hw *hw,
261 				      u8 num_ports, bool eee_enabled,
262 				      u8 pfc_en, u32 *mfs_tc,
263 				      struct i40e_rx_pb_config *pb_cfg);
264 void i40e_dcb_hw_rx_pb_config(struct i40e_hw *hw,
265 			      struct i40e_rx_pb_config *old_pb_cfg,
266 			      struct i40e_rx_pb_config *new_pb_cfg);
267 int i40e_get_dcbx_status(struct i40e_hw *hw,
268 			 u16 *status);
269 int i40e_lldp_to_dcb_config(u8 *lldpmib,
270 			    struct i40e_dcbx_config *dcbcfg);
271 int i40e_aq_get_dcb_config(struct i40e_hw *hw, u8 mib_type,
272 			   u8 bridgetype,
273 			   struct i40e_dcbx_config *dcbcfg);
274 int i40e_get_dcb_config(struct i40e_hw *hw);
275 int i40e_init_dcb(struct i40e_hw *hw,
276 		  bool enable_mib_change);
277 int
278 i40e_get_fw_lldp_status(struct i40e_hw *hw,
279 			enum i40e_get_fw_lldp_status_resp *lldp_status);
280 int i40e_set_dcb_config(struct i40e_hw *hw);
281 int i40e_dcb_config_to_lldp(u8 *lldpmib, u16 *miblen,
282 			    struct i40e_dcbx_config *dcbcfg);
283 #endif /* _I40E_DCB_H_ */
284