2 * drivers/net/ethernet/mellanox/mlxsw/pci.h
3 * Copyright (c) 2015 Mellanox Technologies. All rights reserved.
4 * Copyright (c) 2015 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
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.
38 #include <linux/bitops.h>
42 #define PCI_DEVICE_ID_MELLANOX_SWITCHX2 0xc738
43 #define MLXSW_PCI_BAR0_SIZE (1024 * 1024) /* 1MB */
44 #define MLXSW_PCI_PAGE_SIZE 4096
46 #define MLXSW_PCI_CIR_BASE 0x71000
47 #define MLXSW_PCI_CIR_IN_PARAM_HI MLXSW_PCI_CIR_BASE
48 #define MLXSW_PCI_CIR_IN_PARAM_LO (MLXSW_PCI_CIR_BASE + 0x04)
49 #define MLXSW_PCI_CIR_IN_MODIFIER (MLXSW_PCI_CIR_BASE + 0x08)
50 #define MLXSW_PCI_CIR_OUT_PARAM_HI (MLXSW_PCI_CIR_BASE + 0x0C)
51 #define MLXSW_PCI_CIR_OUT_PARAM_LO (MLXSW_PCI_CIR_BASE + 0x10)
52 #define MLXSW_PCI_CIR_TOKEN (MLXSW_PCI_CIR_BASE + 0x14)
53 #define MLXSW_PCI_CIR_CTRL (MLXSW_PCI_CIR_BASE + 0x18)
54 #define MLXSW_PCI_CIR_CTRL_GO_BIT BIT(23)
55 #define MLXSW_PCI_CIR_CTRL_EVREQ_BIT BIT(22)
56 #define MLXSW_PCI_CIR_CTRL_OPCODE_MOD_SHIFT 12
57 #define MLXSW_PCI_CIR_CTRL_STATUS_SHIFT 24
58 #define MLXSW_PCI_CIR_TIMEOUT_MSECS 1000
60 #define MLXSW_PCI_SW_RESET 0xF0010
61 #define MLXSW_PCI_SW_RESET_RST_BIT BIT(0)
62 #define MLXSW_PCI_SW_RESET_TIMEOUT_MSECS 5000
64 #define MLXSW_PCI_DOORBELL_SDQ_OFFSET 0x000
65 #define MLXSW_PCI_DOORBELL_RDQ_OFFSET 0x200
66 #define MLXSW_PCI_DOORBELL_CQ_OFFSET 0x400
67 #define MLXSW_PCI_DOORBELL_EQ_OFFSET 0x600
68 #define MLXSW_PCI_DOORBELL_ARM_CQ_OFFSET 0x800
69 #define MLXSW_PCI_DOORBELL_ARM_EQ_OFFSET 0xA00
71 #define MLXSW_PCI_DOORBELL(offset, type_offset, num) \
72 ((offset) + (type_offset) + (num) * 4)
74 #define MLXSW_PCI_CQS_MAX 96
75 #define MLXSW_PCI_EQS_COUNT 2
76 #define MLXSW_PCI_EQ_ASYNC_NUM 0
77 #define MLXSW_PCI_EQ_COMP_NUM 1
79 #define MLXSW_PCI_AQ_PAGES 8
80 #define MLXSW_PCI_AQ_SIZE (MLXSW_PCI_PAGE_SIZE * MLXSW_PCI_AQ_PAGES)
81 #define MLXSW_PCI_WQE_SIZE 32 /* 32 bytes per element */
82 #define MLXSW_PCI_CQE_SIZE 16 /* 16 bytes per element */
83 #define MLXSW_PCI_EQE_SIZE 16 /* 16 bytes per element */
84 #define MLXSW_PCI_WQE_COUNT (MLXSW_PCI_AQ_SIZE / MLXSW_PCI_WQE_SIZE)
85 #define MLXSW_PCI_CQE_COUNT (MLXSW_PCI_AQ_SIZE / MLXSW_PCI_CQE_SIZE)
86 #define MLXSW_PCI_EQE_COUNT (MLXSW_PCI_AQ_SIZE / MLXSW_PCI_EQE_SIZE)
87 #define MLXSW_PCI_EQE_UPDATE_COUNT 0x80
89 #define MLXSW_PCI_WQE_SG_ENTRIES 3
90 #define MLXSW_PCI_WQE_TYPE_ETHERNET 0xA
93 * If set it indicates that a completion should be reported upon
94 * execution of this descriptor.
96 MLXSW_ITEM32(pci, wqe, c, 0x00, 31, 1);
99 * Local Processing, set if packet should be processed by the local
101 * For Ethernet EMAD (Direct Route and non Direct Route) -
102 * must be set if packet destination is local device
103 * For InfiniBand CTL - must be set if packet destination is local device
104 * Otherwise it must be clear
105 * Local Process packets must not exceed the size of 2K (including payload
108 MLXSW_ITEM32(pci, wqe, lp, 0x00, 30, 1);
113 MLXSW_ITEM32(pci, wqe, type, 0x00, 23, 4);
115 /* pci_wqe_byte_count
116 * Size of i-th scatter/gather entry, 0 if entry is unused.
118 MLXSW_ITEM16_INDEXED(pci, wqe, byte_count, 0x02, 0, 14, 0x02, 0x00, false);
121 * Physical address of i-th scatter/gather entry.
122 * Gather Entries must be 2Byte aligned.
124 MLXSW_ITEM64_INDEXED(pci, wqe, address, 0x08, 0, 64, 0x8, 0x0, false);
127 * Packet arrives from a port which is a LAG
129 MLXSW_ITEM32(pci, cqe, lag, 0x00, 23, 1);
131 /* pci_cqe_system_port
132 * When lag=0: System port on which the packet was received
134 * bits [15:4] LAG ID on which the packet was received
135 * bits [3:0] sub_port on which the packet was received
137 MLXSW_ITEM32(pci, cqe, system_port, 0x00, 0, 16);
139 /* pci_cqe_wqe_counter
140 * WQE count of the WQEs completed on the associated dqn
142 MLXSW_ITEM32(pci, cqe, wqe_counter, 0x04, 16, 16);
144 /* pci_cqe_byte_count
145 * Byte count of received packets including additional two
146 * Reserved Bytes that are append to the end of the frame.
147 * Reserved for Send CQE.
149 MLXSW_ITEM32(pci, cqe, byte_count, 0x04, 0, 14);
152 * Trap ID that captured the packet.
154 MLXSW_ITEM32(pci, cqe, trap_id, 0x08, 0, 8);
157 * Length include CRC. Indicates the length field includes
160 MLXSW_ITEM32(pci, cqe, crc, 0x0C, 8, 1);
165 MLXSW_ITEM32(pci, cqe, e, 0x0C, 7, 1);
171 MLXSW_ITEM32(pci, cqe, sr, 0x0C, 6, 1);
174 * Descriptor Queue (DQ) Number.
176 MLXSW_ITEM32(pci, cqe, dqn, 0x0C, 1, 5);
181 MLXSW_ITEM32(pci, cqe, owner, 0x0C, 0, 1);
183 /* pci_eqe_event_type
186 MLXSW_ITEM32(pci, eqe, event_type, 0x0C, 24, 8);
187 #define MLXSW_PCI_EQE_EVENT_TYPE_COMP 0x00
188 #define MLXSW_PCI_EQE_EVENT_TYPE_CMD 0x0A
190 /* pci_eqe_event_sub_type
193 MLXSW_ITEM32(pci, eqe, event_sub_type, 0x0C, 16, 8);
196 * Completion Queue that triggeret this EQE.
198 MLXSW_ITEM32(pci, eqe, cqn, 0x0C, 8, 7);
203 MLXSW_ITEM32(pci, eqe, owner, 0x0C, 0, 1);
206 * Command completion event - token
208 MLXSW_ITEM32(pci, eqe, cmd_token, 0x08, 16, 16);
210 /* pci_eqe_cmd_status
211 * Command completion event - status
213 MLXSW_ITEM32(pci, eqe, cmd_status, 0x08, 0, 8);
215 /* pci_eqe_cmd_out_param_h
216 * Command completion event - output parameter - higher part
218 MLXSW_ITEM32(pci, eqe, cmd_out_param_h, 0x0C, 0, 32);
220 /* pci_eqe_cmd_out_param_l
221 * Command completion event - output parameter - lower part
223 MLXSW_ITEM32(pci, eqe, cmd_out_param_l, 0x10, 0, 32);