1 /* 2 * Broadcom NetXtreme-E RoCE driver. 3 * 4 * Copyright (c) 2016 - 2017, Broadcom. All rights reserved. The term 5 * Broadcom refers to Broadcom Limited and/or its subsidiaries. 6 * 7 * This software is available to you under a choice of one of two 8 * licenses. You may choose to be licensed under the terms of the GNU 9 * General Public License (GPL) Version 2, available from the file 10 * COPYING in the main directory of this source tree, or the 11 * BSD license below: 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in 21 * the documentation and/or other materials provided with the 22 * distribution. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 26 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 31 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 32 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 33 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 34 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 35 * 36 * Description: RDMA Controller HW interface (header) 37 */ 38 39 #ifndef __BNXT_QPLIB_RCFW_H__ 40 #define __BNXT_QPLIB_RCFW_H__ 41 42 #define RCFW_CMDQ_TRIG_VAL 1 43 #define RCFW_COMM_PCI_BAR_REGION 0 44 #define RCFW_COMM_CONS_PCI_BAR_REGION 2 45 #define RCFW_COMM_BASE_OFFSET 0x600 46 #define RCFW_PF_COMM_PROD_OFFSET 0xc 47 #define RCFW_VF_COMM_PROD_OFFSET 0xc 48 #define RCFW_COMM_TRIG_OFFSET 0x100 49 #define RCFW_COMM_SIZE 0x104 50 51 #define RCFW_DBR_PCI_BAR_REGION 2 52 #define RCFW_DBR_BASE_PAGE_SHIFT 12 53 54 #define RCFW_CMD_PREP(req, CMD, cmd_flags) \ 55 do { \ 56 memset(&(req), 0, sizeof((req))); \ 57 (req).opcode = CMDQ_BASE_OPCODE_##CMD; \ 58 (req).cmd_size = sizeof((req)); \ 59 (req).flags = cpu_to_le16(cmd_flags); \ 60 } while (0) 61 62 #define RCFW_CMD_WAIT_TIME_MS 20000 /* 20 Seconds timeout */ 63 64 /* Cmdq contains a fix number of a 16-Byte slots */ 65 struct bnxt_qplib_cmdqe { 66 u8 data[16]; 67 }; 68 69 /* CMDQ elements */ 70 #define BNXT_QPLIB_CMDQE_MAX_CNT_256 256 71 #define BNXT_QPLIB_CMDQE_MAX_CNT_8192 8192 72 #define BNXT_QPLIB_CMDQE_UNITS sizeof(struct bnxt_qplib_cmdqe) 73 #define BNXT_QPLIB_CMDQE_BYTES(depth) ((depth) * BNXT_QPLIB_CMDQE_UNITS) 74 75 static inline u32 bnxt_qplib_cmdqe_npages(u32 depth) 76 { 77 u32 npages; 78 79 npages = BNXT_QPLIB_CMDQE_BYTES(depth) / PAGE_SIZE; 80 if (BNXT_QPLIB_CMDQE_BYTES(depth) % PAGE_SIZE) 81 npages++; 82 return npages; 83 } 84 85 static inline u32 bnxt_qplib_cmdqe_page_size(u32 depth) 86 { 87 return (bnxt_qplib_cmdqe_npages(depth) * PAGE_SIZE); 88 } 89 90 /* Set the cmd_size to a factor of CMDQE unit */ 91 static inline void bnxt_qplib_set_cmd_slots(struct cmdq_base *req) 92 { 93 req->cmd_size = (req->cmd_size + BNXT_QPLIB_CMDQE_UNITS - 1) / 94 BNXT_QPLIB_CMDQE_UNITS; 95 } 96 97 #define RCFW_MAX_COOKIE_VALUE 0x7FFF 98 #define RCFW_CMD_IS_BLOCKING 0x8000 99 #define RCFW_BLOCKED_CMD_WAIT_COUNT 0x4E20 100 101 #define HWRM_VERSION_RCFW_CMDQ_DEPTH_CHECK 0x1000900020011ULL 102 103 /* Crsq buf is 1024-Byte */ 104 struct bnxt_qplib_crsbe { 105 u8 data[1024]; 106 }; 107 108 /* CREQ */ 109 /* Allocate 1 per QP for async error notification for now */ 110 #define BNXT_QPLIB_CREQE_MAX_CNT (64 * 1024) 111 #define BNXT_QPLIB_CREQE_UNITS 16 /* 16-Bytes per prod unit */ 112 #define CREQ_CMP_VALID(hdr, raw_cons, cp_bit) \ 113 (!!((hdr)->v & CREQ_BASE_V) == \ 114 !((raw_cons) & (cp_bit))) 115 #define CREQ_ENTRY_POLL_BUDGET 0x100 116 117 /* HWQ */ 118 typedef int (*aeq_handler_t)(struct bnxt_qplib_rcfw *, void *, void *); 119 120 struct bnxt_qplib_crsqe { 121 struct creq_qp_event *resp; 122 u32 req_size; 123 }; 124 125 struct bnxt_qplib_rcfw_sbuf { 126 void *sb; 127 dma_addr_t dma_addr; 128 u32 size; 129 }; 130 131 struct bnxt_qplib_qp_node { 132 u32 qp_id; /* QP id */ 133 void *qp_handle; /* ptr to qplib_qp */ 134 }; 135 136 #define BNXT_QPLIB_OOS_COUNT_MASK 0xFFFFFFFF 137 138 #define FIRMWARE_INITIALIZED_FLAG (0) 139 #define FIRMWARE_FIRST_FLAG (31) 140 #define FIRMWARE_TIMED_OUT (3) 141 #define ERR_DEVICE_DETACHED (4) 142 143 struct bnxt_qplib_cmdq_mbox { 144 struct bnxt_qplib_reg_desc reg; 145 void __iomem *prod; 146 void __iomem *db; 147 }; 148 149 struct bnxt_qplib_cmdq_ctx { 150 struct bnxt_qplib_hwq hwq; 151 struct bnxt_qplib_cmdq_mbox cmdq_mbox; 152 wait_queue_head_t waitq; 153 unsigned long flags; 154 unsigned long *cmdq_bitmap; 155 u32 bmap_size; 156 u32 seq_num; 157 }; 158 159 struct bnxt_qplib_creq_db { 160 struct bnxt_qplib_reg_desc reg; 161 struct bnxt_qplib_db_info dbinfo; 162 }; 163 164 struct bnxt_qplib_creq_stat { 165 u64 creq_qp_event_processed; 166 u64 creq_func_event_processed; 167 }; 168 169 struct bnxt_qplib_creq_ctx { 170 struct bnxt_qplib_hwq hwq; 171 struct bnxt_qplib_creq_db creq_db; 172 struct bnxt_qplib_creq_stat stats; 173 struct tasklet_struct creq_tasklet; 174 aeq_handler_t aeq_handler; 175 u16 ring_id; 176 int msix_vec; 177 bool requested; /*irq handler installed */ 178 }; 179 180 /* RCFW Communication Channels */ 181 struct bnxt_qplib_rcfw { 182 struct pci_dev *pdev; 183 struct bnxt_qplib_res *res; 184 struct bnxt_qplib_cmdq_ctx cmdq; 185 struct bnxt_qplib_creq_ctx creq; 186 struct bnxt_qplib_crsqe *crsqe_tbl; 187 int qp_tbl_size; 188 struct bnxt_qplib_qp_node *qp_tbl; 189 u64 oos_prev; 190 u32 init_oos_stats; 191 u32 cmdq_depth; 192 }; 193 194 void bnxt_qplib_free_rcfw_channel(struct bnxt_qplib_rcfw *rcfw); 195 int bnxt_qplib_alloc_rcfw_channel(struct bnxt_qplib_res *res, 196 struct bnxt_qplib_rcfw *rcfw, 197 struct bnxt_qplib_ctx *ctx, 198 int qp_tbl_sz); 199 void bnxt_qplib_rcfw_stop_irq(struct bnxt_qplib_rcfw *rcfw, bool kill); 200 void bnxt_qplib_disable_rcfw_channel(struct bnxt_qplib_rcfw *rcfw); 201 int bnxt_qplib_rcfw_start_irq(struct bnxt_qplib_rcfw *rcfw, int msix_vector, 202 bool need_init); 203 int bnxt_qplib_enable_rcfw_channel(struct bnxt_qplib_rcfw *rcfw, 204 int msix_vector, 205 int cp_bar_reg_off, int virt_fn, 206 aeq_handler_t aeq_handler); 207 208 struct bnxt_qplib_rcfw_sbuf *bnxt_qplib_rcfw_alloc_sbuf( 209 struct bnxt_qplib_rcfw *rcfw, 210 u32 size); 211 void bnxt_qplib_rcfw_free_sbuf(struct bnxt_qplib_rcfw *rcfw, 212 struct bnxt_qplib_rcfw_sbuf *sbuf); 213 int bnxt_qplib_rcfw_send_message(struct bnxt_qplib_rcfw *rcfw, 214 struct cmdq_base *req, struct creq_base *resp, 215 void *sbuf, u8 is_block); 216 217 int bnxt_qplib_deinit_rcfw(struct bnxt_qplib_rcfw *rcfw); 218 int bnxt_qplib_init_rcfw(struct bnxt_qplib_rcfw *rcfw, 219 struct bnxt_qplib_ctx *ctx, int is_virtfn); 220 void bnxt_qplib_mark_qp_error(void *qp_handle); 221 static inline u32 map_qp_id_to_tbl_indx(u32 qid, struct bnxt_qplib_rcfw *rcfw) 222 { 223 /* Last index of the qp_tbl is for QP1 ie. qp_tbl_size - 1*/ 224 return (qid == 1) ? rcfw->qp_tbl_size - 1 : qid % rcfw->qp_tbl_size - 2; 225 } 226 #endif /* __BNXT_QPLIB_RCFW_H__ */ 227