drivers/net/ethernet/huawei/hinic/hinic_hw_qp.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Huawei HiNIC PCI Express Linux driver
   4  * Copyright(c) 2017 Huawei Technologies Co., Ltd
   5  */
   6
   7 #ifndef HINIC_HW_QP_H
   8 #define HINIC_HW_QP_H
   9
  10 #include <linux/kernel.h>
  11 #include <linux/types.h>
  12 #include <linux/sizes.h>
  13 #include <linux/pci.h>
  14 #include <linux/skbuff.h>
  15
  16 #include "hinic_common.h"
  17 #include "hinic_hw_if.h"
  18 #include "hinic_hw_wqe.h"
  19 #include "hinic_hw_wq.h"
  20 #include "hinic_hw_qp_ctxt.h"
  21
  22 #define HINIC_SQ_DB_INFO_PI_HI_SHIFT            0
  23 #define HINIC_SQ_DB_INFO_QID_SHIFT              8
  24 #define HINIC_SQ_DB_INFO_PATH_SHIFT             23
  25 #define HINIC_SQ_DB_INFO_COS_SHIFT              24
  26 #define HINIC_SQ_DB_INFO_TYPE_SHIFT             27
  27
  28 #define HINIC_SQ_DB_INFO_PI_HI_MASK             0xFF
  29 #define HINIC_SQ_DB_INFO_QID_MASK               0x3FF
  30 #define HINIC_SQ_DB_INFO_PATH_MASK              0x1
  31 #define HINIC_SQ_DB_INFO_COS_MASK               0x7
  32 #define HINIC_SQ_DB_INFO_TYPE_MASK              0x1F
  33
  34 #define HINIC_SQ_DB_INFO_SET(val, member)       \
  35                 (((u32)(val) & HINIC_SQ_DB_INFO_##member##_MASK) \
  36                  << HINIC_SQ_DB_INFO_##member##_SHIFT)
  37
  38 #define HINIC_SQ_WQEBB_SIZE                     64
  39 #define HINIC_RQ_WQEBB_SIZE                     32
  40
  41 #define HINIC_SQ_PAGE_SIZE                      SZ_256K
  42 #define HINIC_RQ_PAGE_SIZE                      SZ_256K
  43
  44 #define HINIC_SQ_DEPTH                          SZ_4K
  45 #define HINIC_RQ_DEPTH                          SZ_4K
  46
  47 #define HINIC_MAX_QUEUE_DEPTH                   SZ_4K
  48 #define HINIC_MIN_QUEUE_DEPTH                   128
  49
  50 /* In any change to HINIC_RX_BUF_SZ, HINIC_RX_BUF_SZ_IDX must be changed */
  51 #define HINIC_RX_BUF_SZ                         2048
  52 #define HINIC_RX_BUF_SZ_IDX                     HINIC_RX_BUF_SZ_2048_IDX
  53
  54 #define HINIC_MIN_TX_WQE_SIZE(wq)               \
  55                 ALIGN(HINIC_SQ_WQE_SIZE(1), (wq)->wqebb_size)
  56
  57 #define HINIC_MIN_TX_NUM_WQEBBS(sq)             \
  58                 (HINIC_MIN_TX_WQE_SIZE((sq)->wq) / (sq)->wq->wqebb_size)
  59
  60 enum hinic_rx_buf_sz_idx {
  61         HINIC_RX_BUF_SZ_32_IDX,
  62         HINIC_RX_BUF_SZ_64_IDX,
  63         HINIC_RX_BUF_SZ_96_IDX,
  64         HINIC_RX_BUF_SZ_128_IDX,
  65         HINIC_RX_BUF_SZ_192_IDX,
  66         HINIC_RX_BUF_SZ_256_IDX,
  67         HINIC_RX_BUF_SZ_384_IDX,
  68         HINIC_RX_BUF_SZ_512_IDX,
  69         HINIC_RX_BUF_SZ_768_IDX,
  70         HINIC_RX_BUF_SZ_1024_IDX,
  71         HINIC_RX_BUF_SZ_1536_IDX,
  72         HINIC_RX_BUF_SZ_2048_IDX,
  73         HINIC_RX_BUF_SZ_3072_IDX,
  74         HINIC_RX_BUF_SZ_4096_IDX,
  75         HINIC_RX_BUF_SZ_8192_IDX,
  76         HINIC_RX_BUF_SZ_16384_IDX,
  77 };
  78
  79 struct hinic_sq {
  80         struct hinic_hwif       *hwif;
  81
  82         struct hinic_wq         *wq;
  83
  84         u16                     qid;
  85
  86         u32                     irq;
  87         u16                     msix_entry;
  88
  89         void                    *hw_ci_addr;
  90         dma_addr_t              hw_ci_dma_addr;
  91
  92         void __iomem            *db_base;
  93
  94         struct sk_buff          **saved_skb;
  95         struct hinic_debug_priv *dbg;
  96 };
  97
  98 struct hinic_rq {
  99         struct hinic_hwif       *hwif;
 100
 101         struct hinic_wq         *wq;
 102
 103         u16                     qid;
 104
 105         struct cpumask          affinity_mask;
 106         u32                     irq;
 107         u16                     msix_entry;
 108
 109         size_t                  buf_sz;
 110
 111         struct sk_buff          **saved_skb;
 112
 113         struct hinic_rq_cqe     **cqe;
 114         dma_addr_t              *cqe_dma;
 115
 116         u16                     *pi_virt_addr;
 117         dma_addr_t              pi_dma_addr;
 118         struct hinic_debug_priv *dbg;
 119 };
 120
 121 struct hinic_qp {
 122         struct hinic_sq         sq;
 123         struct hinic_rq         rq;
 124
 125         u16     q_id;
 126 };
 127
 128 void hinic_qp_prepare_header(struct hinic_qp_ctxt_header *qp_ctxt_hdr,
 129                              enum hinic_qp_ctxt_type ctxt_type,
 130                              u16 num_queues, u16 max_queues);
 131
 132 void hinic_sq_prepare_ctxt(struct hinic_sq_ctxt *sq_ctxt,
 133                            struct hinic_sq *sq, u16 global_qid);
 134
 135 void hinic_rq_prepare_ctxt(struct hinic_rq_ctxt *rq_ctxt,
 136                            struct hinic_rq *rq, u16 global_qid);
 137
 138 int hinic_init_sq(struct hinic_sq *sq, struct hinic_hwif *hwif,
 139                   struct hinic_wq *wq, struct msix_entry *entry, void *ci_addr,
 140                   dma_addr_t ci_dma_addr, void __iomem *db_base);
 141
 142 void hinic_clean_sq(struct hinic_sq *sq);
 143
 144 int hinic_init_rq(struct hinic_rq *rq, struct hinic_hwif *hwif,
 145                   struct hinic_wq *wq, struct msix_entry *entry);
 146
 147 void hinic_clean_rq(struct hinic_rq *rq);
 148
 149 int hinic_get_sq_free_wqebbs(struct hinic_sq *sq);
 150
 151 int hinic_get_rq_free_wqebbs(struct hinic_rq *rq);
 152
 153 void hinic_task_set_l2hdr(struct hinic_sq_task *task, u32 len);
 154
 155 void hinic_task_set_outter_l3(struct hinic_sq_task *task,
 156                               enum hinic_l3_offload_type l3_type,
 157                               u32 network_len);
 158
 159 void hinic_task_set_inner_l3(struct hinic_sq_task *task,
 160                              enum hinic_l3_offload_type l3_type,
 161                              u32 network_len);
 162
 163 void hinic_task_set_tunnel_l4(struct hinic_sq_task *task,
 164                               enum hinic_l4_tunnel_type l4_type,
 165                               u32 tunnel_len);
 166
 167 void hinic_set_cs_inner_l4(struct hinic_sq_task *task,
 168                            u32 *queue_info,
 169                            enum hinic_l4_offload_type l4_offload,
 170                            u32 l4_len, u32 offset);
 171
 172 void hinic_set_tso_inner_l4(struct hinic_sq_task *task,
 173                             u32 *queue_info,
 174                             enum hinic_l4_offload_type l4_offload,
 175                             u32 l4_len,
 176                             u32 offset, u32 ip_ident, u32 mss);
 177
 178 void hinic_sq_prepare_wqe(struct hinic_sq *sq, u16 prod_idx,
 179                           struct hinic_sq_wqe *wqe, struct hinic_sge *sges,
 180                           int nr_sges);
 181
 182 void hinic_sq_write_db(struct hinic_sq *sq, u16 prod_idx, unsigned int wqe_size,
 183                        unsigned int cos);
 184
 185 struct hinic_sq_wqe *hinic_sq_get_wqe(struct hinic_sq *sq,
 186                                       unsigned int wqe_size, u16 *prod_idx);
 187
 188 void hinic_sq_return_wqe(struct hinic_sq *sq, unsigned int wqe_size);
 189
 190 void hinic_sq_write_wqe(struct hinic_sq *sq, u16 prod_idx,
 191                         struct hinic_sq_wqe *wqe, struct sk_buff *skb,
 192                         unsigned int wqe_size);
 193
 194 struct hinic_sq_wqe *hinic_sq_read_wqe(struct hinic_sq *sq,
 195                                        struct sk_buff **skb,
 196                                        unsigned int wqe_size, u16 *cons_idx);
 197
 198 struct hinic_sq_wqe *hinic_sq_read_wqebb(struct hinic_sq *sq,
 199                                          struct sk_buff **skb,
 200                                          unsigned int *wqe_size, u16 *cons_idx);
 201
 202 void hinic_sq_put_wqe(struct hinic_sq *sq, unsigned int wqe_size);
 203
 204 void hinic_sq_get_sges(struct hinic_sq_wqe *wqe, struct hinic_sge *sges,
 205                        int nr_sges);
 206
 207 struct hinic_rq_wqe *hinic_rq_get_wqe(struct hinic_rq *rq,
 208                                       unsigned int wqe_size, u16 *prod_idx);
 209
 210 void hinic_rq_write_wqe(struct hinic_rq *rq, u16 prod_idx,
 211                         struct hinic_rq_wqe *wqe, struct sk_buff *skb);
 212
 213 struct hinic_rq_wqe *hinic_rq_read_wqe(struct hinic_rq *rq,
 214                                        unsigned int wqe_size,
 215                                        struct sk_buff **skb, u16 *cons_idx);
 216
 217 struct hinic_rq_wqe *hinic_rq_read_next_wqe(struct hinic_rq *rq,
 218                                             unsigned int wqe_size,
 219                                             struct sk_buff **skb,
 220                                             u16 *cons_idx);
 221
 222 void hinic_rq_put_wqe(struct hinic_rq *rq, u16 cons_idx,
 223                       unsigned int wqe_size);
 224
 225 void hinic_rq_get_sge(struct hinic_rq *rq, struct hinic_rq_wqe *wqe,
 226                       u16 cons_idx, struct hinic_sge *sge);
 227
 228 void hinic_rq_prepare_wqe(struct hinic_rq *rq, u16 prod_idx,
 229                           struct hinic_rq_wqe *wqe, struct hinic_sge *sge);
 230
 231 void hinic_rq_update(struct hinic_rq *rq, u16 prod_idx);
 232
 233 #endif