2 * drivers/net/ethernet/mellanox/mlxsw/pci_hw.h
3 * Copyright (c) 2015-2016 Mellanox Technologies. All rights reserved.
4 * Copyright (c) 2015-2016 Jiri Pirko <jiri@mellanox.com>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the names of the copyright holders nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
18 * Alternatively, this software may be distributed under the terms of the
19 * GNU General Public License ("GPL") version 2 as published by the Free
20 * Software Foundation.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
35 #ifndef _MLXSW_PCI_HW_H
36 #define _MLXSW_PCI_HW_H
38 #include <linux/bitops.h>
42 #define MLXSW_PCI_BAR0_SIZE (1024 * 1024) /* 1MB */
43 #define MLXSW_PCI_PAGE_SIZE 4096
45 #define MLXSW_PCI_CIR_BASE 0x71000
46 #define MLXSW_PCI_CIR_IN_PARAM_HI MLXSW_PCI_CIR_BASE
47 #define MLXSW_PCI_CIR_IN_PARAM_LO (MLXSW_PCI_CIR_BASE + 0x04)
48 #define MLXSW_PCI_CIR_IN_MODIFIER (MLXSW_PCI_CIR_BASE + 0x08)
49 #define MLXSW_PCI_CIR_OUT_PARAM_HI (MLXSW_PCI_CIR_BASE + 0x0C)
50 #define MLXSW_PCI_CIR_OUT_PARAM_LO (MLXSW_PCI_CIR_BASE + 0x10)
51 #define MLXSW_PCI_CIR_TOKEN (MLXSW_PCI_CIR_BASE + 0x14)
52 #define MLXSW_PCI_CIR_CTRL (MLXSW_PCI_CIR_BASE + 0x18)
53 #define MLXSW_PCI_CIR_CTRL_GO_BIT BIT(23)
54 #define MLXSW_PCI_CIR_CTRL_EVREQ_BIT BIT(22)
55 #define MLXSW_PCI_CIR_CTRL_OPCODE_MOD_SHIFT 12
56 #define MLXSW_PCI_CIR_CTRL_STATUS_SHIFT 24
57 #define MLXSW_PCI_CIR_TIMEOUT_MSECS 1000
59 #define MLXSW_PCI_SW_RESET 0xF0010
60 #define MLXSW_PCI_SW_RESET_RST_BIT BIT(0)
61 #define MLXSW_PCI_SW_RESET_TIMEOUT_MSECS 5000
62 #define MLXSW_PCI_SW_RESET_WAIT_MSECS 100
63 #define MLXSW_PCI_FW_READY 0xA1844
64 #define MLXSW_PCI_FW_READY_MASK 0xFFFF
65 #define MLXSW_PCI_FW_READY_MAGIC 0x5E
67 #define MLXSW_PCI_DOORBELL_SDQ_OFFSET 0x000
68 #define MLXSW_PCI_DOORBELL_RDQ_OFFSET 0x200
69 #define MLXSW_PCI_DOORBELL_CQ_OFFSET 0x400
70 #define MLXSW_PCI_DOORBELL_EQ_OFFSET 0x600
71 #define MLXSW_PCI_DOORBELL_ARM_CQ_OFFSET 0x800
72 #define MLXSW_PCI_DOORBELL_ARM_EQ_OFFSET 0xA00
74 #define MLXSW_PCI_DOORBELL(offset, type_offset, num) \
75 ((offset) + (type_offset) + (num) * 4)
77 #define MLXSW_PCI_CQS_MAX 96
78 #define MLXSW_PCI_EQS_COUNT 2
79 #define MLXSW_PCI_EQ_ASYNC_NUM 0
80 #define MLXSW_PCI_EQ_COMP_NUM 1
82 #define MLXSW_PCI_AQ_PAGES 8
83 #define MLXSW_PCI_AQ_SIZE (MLXSW_PCI_PAGE_SIZE * MLXSW_PCI_AQ_PAGES)
84 #define MLXSW_PCI_WQE_SIZE 32 /* 32 bytes per element */
85 #define MLXSW_PCI_CQE01_SIZE 16 /* 16 bytes per element */
86 #define MLXSW_PCI_CQE2_SIZE 32 /* 32 bytes per element */
87 #define MLXSW_PCI_EQE_SIZE 16 /* 16 bytes per element */
88 #define MLXSW_PCI_WQE_COUNT (MLXSW_PCI_AQ_SIZE / MLXSW_PCI_WQE_SIZE)
89 #define MLXSW_PCI_CQE01_COUNT (MLXSW_PCI_AQ_SIZE / MLXSW_PCI_CQE01_SIZE)
90 #define MLXSW_PCI_CQE2_COUNT (MLXSW_PCI_AQ_SIZE / MLXSW_PCI_CQE2_SIZE)
91 #define MLXSW_PCI_EQE_COUNT (MLXSW_PCI_AQ_SIZE / MLXSW_PCI_EQE_SIZE)
92 #define MLXSW_PCI_EQE_UPDATE_COUNT 0x80
94 #define MLXSW_PCI_WQE_SG_ENTRIES 3
95 #define MLXSW_PCI_WQE_TYPE_ETHERNET 0xA
98 * If set it indicates that a completion should be reported upon
99 * execution of this descriptor.
101 MLXSW_ITEM32(pci, wqe, c, 0x00, 31, 1);
104 * Local Processing, set if packet should be processed by the local
106 * For Ethernet EMAD (Direct Route and non Direct Route) -
107 * must be set if packet destination is local device
108 * For InfiniBand CTL - must be set if packet destination is local device
109 * Otherwise it must be clear
110 * Local Process packets must not exceed the size of 2K (including payload
113 MLXSW_ITEM32(pci, wqe, lp, 0x00, 30, 1);
118 MLXSW_ITEM32(pci, wqe, type, 0x00, 23, 4);
120 /* pci_wqe_byte_count
121 * Size of i-th scatter/gather entry, 0 if entry is unused.
123 MLXSW_ITEM16_INDEXED(pci, wqe, byte_count, 0x02, 0, 14, 0x02, 0x00, false);
126 * Physical address of i-th scatter/gather entry.
127 * Gather Entries must be 2Byte aligned.
129 MLXSW_ITEM64_INDEXED(pci, wqe, address, 0x08, 0, 64, 0x8, 0x0, false);
131 enum mlxsw_pci_cqe_v {
137 #define mlxsw_pci_cqe_item_helpers(name, v0, v1, v2) \
138 static inline u32 mlxsw_pci_cqe_##name##_get(enum mlxsw_pci_cqe_v v, char *cqe) \
142 case MLXSW_PCI_CQE_V0: \
143 return mlxsw_pci_cqe##v0##_##name##_get(cqe); \
144 case MLXSW_PCI_CQE_V1: \
145 return mlxsw_pci_cqe##v1##_##name##_get(cqe); \
146 case MLXSW_PCI_CQE_V2: \
147 return mlxsw_pci_cqe##v2##_##name##_get(cqe); \
150 static inline void mlxsw_pci_cqe_##name##_set(enum mlxsw_pci_cqe_v v, \
151 char *cqe, u32 val) \
155 case MLXSW_PCI_CQE_V0: \
156 mlxsw_pci_cqe##v0##_##name##_set(cqe, val); \
158 case MLXSW_PCI_CQE_V1: \
159 mlxsw_pci_cqe##v1##_##name##_set(cqe, val); \
161 case MLXSW_PCI_CQE_V2: \
162 mlxsw_pci_cqe##v2##_##name##_set(cqe, val); \
168 * Packet arrives from a port which is a LAG
170 MLXSW_ITEM32(pci, cqe0, lag, 0x00, 23, 1);
171 MLXSW_ITEM32(pci, cqe12, lag, 0x00, 24, 1);
172 mlxsw_pci_cqe_item_helpers(lag, 0, 12, 12);
174 /* pci_cqe_system_port/lag_id
175 * When lag=0: System port on which the packet was received
177 * bits [15:4] LAG ID on which the packet was received
178 * bits [3:0] sub_port on which the packet was received
180 MLXSW_ITEM32(pci, cqe, system_port, 0x00, 0, 16);
181 MLXSW_ITEM32(pci, cqe0, lag_id, 0x00, 4, 12);
182 MLXSW_ITEM32(pci, cqe12, lag_id, 0x00, 0, 16);
183 mlxsw_pci_cqe_item_helpers(lag_id, 0, 12, 12);
184 MLXSW_ITEM32(pci, cqe0, lag_subport, 0x00, 0, 4);
185 MLXSW_ITEM32(pci, cqe12, lag_subport, 0x00, 16, 8);
186 mlxsw_pci_cqe_item_helpers(lag_subport, 0, 12, 12);
188 /* pci_cqe_wqe_counter
189 * WQE count of the WQEs completed on the associated dqn
191 MLXSW_ITEM32(pci, cqe, wqe_counter, 0x04, 16, 16);
193 /* pci_cqe_byte_count
194 * Byte count of received packets including additional two
195 * Reserved Bytes that are append to the end of the frame.
196 * Reserved for Send CQE.
198 MLXSW_ITEM32(pci, cqe, byte_count, 0x04, 0, 14);
201 * Trap ID that captured the packet.
203 MLXSW_ITEM32(pci, cqe, trap_id, 0x08, 0, 9);
206 * Length include CRC. Indicates the length field includes
209 MLXSW_ITEM32(pci, cqe0, crc, 0x0C, 8, 1);
210 MLXSW_ITEM32(pci, cqe12, crc, 0x0C, 9, 1);
211 mlxsw_pci_cqe_item_helpers(crc, 0, 12, 12);
216 MLXSW_ITEM32(pci, cqe0, e, 0x0C, 7, 1);
217 MLXSW_ITEM32(pci, cqe12, e, 0x00, 27, 1);
218 mlxsw_pci_cqe_item_helpers(e, 0, 12, 12);
224 MLXSW_ITEM32(pci, cqe0, sr, 0x0C, 6, 1);
225 MLXSW_ITEM32(pci, cqe12, sr, 0x00, 26, 1);
226 mlxsw_pci_cqe_item_helpers(sr, 0, 12, 12);
229 * Descriptor Queue (DQ) Number.
231 MLXSW_ITEM32(pci, cqe0, dqn, 0x0C, 1, 5);
232 MLXSW_ITEM32(pci, cqe12, dqn, 0x0C, 1, 6);
233 mlxsw_pci_cqe_item_helpers(dqn, 0, 12, 12);
238 MLXSW_ITEM32(pci, cqe01, owner, 0x0C, 0, 1);
239 MLXSW_ITEM32(pci, cqe2, owner, 0x1C, 0, 1);
240 mlxsw_pci_cqe_item_helpers(owner, 01, 01, 2);
242 /* pci_eqe_event_type
245 MLXSW_ITEM32(pci, eqe, event_type, 0x0C, 24, 8);
246 #define MLXSW_PCI_EQE_EVENT_TYPE_COMP 0x00
247 #define MLXSW_PCI_EQE_EVENT_TYPE_CMD 0x0A
249 /* pci_eqe_event_sub_type
252 MLXSW_ITEM32(pci, eqe, event_sub_type, 0x0C, 16, 8);
255 * Completion Queue that triggeret this EQE.
257 MLXSW_ITEM32(pci, eqe, cqn, 0x0C, 8, 7);
262 MLXSW_ITEM32(pci, eqe, owner, 0x0C, 0, 1);
265 * Command completion event - token
267 MLXSW_ITEM32(pci, eqe, cmd_token, 0x00, 16, 16);
269 /* pci_eqe_cmd_status
270 * Command completion event - status
272 MLXSW_ITEM32(pci, eqe, cmd_status, 0x00, 0, 8);
274 /* pci_eqe_cmd_out_param_h
275 * Command completion event - output parameter - higher part
277 MLXSW_ITEM32(pci, eqe, cmd_out_param_h, 0x04, 0, 32);
279 /* pci_eqe_cmd_out_param_l
280 * Command completion event - output parameter - lower part
282 MLXSW_ITEM32(pci, eqe, cmd_out_param_l, 0x08, 0, 32);