drivers/net/ethernet/qlogic/qed/qed_cxt.h

   1 /* QLogic qed NIC Driver
   2  * Copyright (c) 2015-2017  QLogic Corporation
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and /or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #ifndef _QED_CXT_H
  34 #define _QED_CXT_H
  35
  36 #include <linux/types.h>
  37 #include <linux/slab.h>
  38 #include <linux/qed/qed_if.h>
  39 #include "qed_hsi.h"
  40 #include "qed.h"
  41
  42 struct qed_cxt_info {
  43         void                    *p_cxt;
  44         u32                     iid;
  45         enum protocol_type      type;
  46 };
  47
  48 #define MAX_TID_BLOCKS                  512
  49 struct qed_tid_mem {
  50         u32 tid_size;
  51         u32 num_tids_per_block;
  52         u32 waste;
  53         u8 *blocks[MAX_TID_BLOCKS];     /* 4K */
  54 };
  55
  56 /**
  57  * @brief qed_cxt_acquire - Acquire a new cid of a specific protocol type
  58  *
  59  * @param p_hwfn
  60  * @param type
  61  * @param p_cid
  62  *
  63  * @return int
  64  */
  65 int qed_cxt_acquire_cid(struct qed_hwfn *p_hwfn,
  66                         enum protocol_type type,
  67                         u32 *p_cid);
  68
  69 /**
  70  * @brief qedo_cid_get_cxt_info - Returns the context info for a specific cid
  71  *
  72  *
  73  * @param p_hwfn
  74  * @param p_info in/out
  75  *
  76  * @return int
  77  */
  78 int qed_cxt_get_cid_info(struct qed_hwfn *p_hwfn,
  79                          struct qed_cxt_info *p_info);
  80
  81 /**
  82  * @brief qed_cxt_get_tid_mem_info
  83  *
  84  * @param p_hwfn
  85  * @param p_info
  86  *
  87  * @return int
  88  */
  89 int qed_cxt_get_tid_mem_info(struct qed_hwfn *p_hwfn,
  90                              struct qed_tid_mem *p_info);
  91
  92 #define QED_CXT_ISCSI_TID_SEG   PROTOCOLID_ISCSI
  93 #define QED_CXT_ROCE_TID_SEG    PROTOCOLID_ROCE
  94 #define QED_CXT_FCOE_TID_SEG    PROTOCOLID_FCOE
  95 enum qed_cxt_elem_type {
  96         QED_ELEM_CXT,
  97         QED_ELEM_SRQ,
  98         QED_ELEM_TASK
  99 };
 100
 101 u32 qed_cxt_get_proto_cid_count(struct qed_hwfn *p_hwfn,
 102                                 enum protocol_type type, u32 *vf_cid);
 103
 104 /**
 105  * @brief qed_cxt_set_pf_params - Set the PF params for cxt init
 106  *
 107  * @param p_hwfn
 108  *
 109  * @return int
 110  */
 111 int qed_cxt_set_pf_params(struct qed_hwfn *p_hwfn);
 112
 113 /**
 114  * @brief qed_cxt_cfg_ilt_compute - compute ILT init parameters
 115  *
 116  * @param p_hwfn
 117  *
 118  * @return int
 119  */
 120 int qed_cxt_cfg_ilt_compute(struct qed_hwfn *p_hwfn);
 121
 122 /**
 123  * @brief qed_cxt_mngr_alloc - Allocate and init the context manager struct
 124  *
 125  * @param p_hwfn
 126  *
 127  * @return int
 128  */
 129 int qed_cxt_mngr_alloc(struct qed_hwfn *p_hwfn);
 130
 131 /**
 132  * @brief qed_cxt_mngr_free
 133  *
 134  * @param p_hwfn
 135  */
 136 void qed_cxt_mngr_free(struct qed_hwfn *p_hwfn);
 137
 138 /**
 139  * @brief qed_cxt_tables_alloc - Allocate ILT shadow, Searcher T2, acquired map
 140  *
 141  * @param p_hwfn
 142  *
 143  * @return int
 144  */
 145 int qed_cxt_tables_alloc(struct qed_hwfn *p_hwfn);
 146
 147 /**
 148  * @brief qed_cxt_mngr_setup - Reset the acquired CIDs
 149  *
 150  * @param p_hwfn
 151  */
 152 void qed_cxt_mngr_setup(struct qed_hwfn *p_hwfn);
 153
 154 /**
 155  * @brief qed_cxt_hw_init_common - Initailze ILT and DQ, common phase, per path.
 156  *
 157  *
 158  *
 159  * @param p_hwfn
 160  */
 161 void qed_cxt_hw_init_common(struct qed_hwfn *p_hwfn);
 162
 163 /**
 164  * @brief qed_cxt_hw_init_pf - Initailze ILT and DQ, PF phase, per path.
 165  *
 166  *
 167  *
 168  * @param p_hwfn
 169  */
 170 void qed_cxt_hw_init_pf(struct qed_hwfn *p_hwfn);
 171
 172 /**
 173  * @brief qed_qm_init_pf - Initailze the QM PF phase, per path
 174  *
 175  * @param p_hwfn
 176  */
 177
 178 void qed_qm_init_pf(struct qed_hwfn *p_hwfn);
 179
 180 /**
 181  * @brief Reconfigures QM pf on the fly
 182  *
 183  * @param p_hwfn
 184  * @param p_ptt
 185  *
 186  * @return int
 187  */
 188 int qed_qm_reconf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
 189
 190 /**
 191  * @brief qed_cxt_release - Release a cid
 192  *
 193  * @param p_hwfn
 194  * @param cid
 195  */
 196 void qed_cxt_release_cid(struct qed_hwfn *p_hwfn,
 197                          u32 cid);
 198 int qed_cxt_dynamic_ilt_alloc(struct qed_hwfn *p_hwfn,
 199                               enum qed_cxt_elem_type elem_type, u32 iid);
 200 u32 qed_cxt_get_proto_tid_count(struct qed_hwfn *p_hwfn,
 201                                 enum protocol_type type);
 202 u32 qed_cxt_get_proto_cid_start(struct qed_hwfn *p_hwfn,
 203                                 enum protocol_type type);
 204 int qed_cxt_free_proto_ilt(struct qed_hwfn *p_hwfn, enum protocol_type proto);
 205
 206 #define QED_CTX_WORKING_MEM 0
 207 #define QED_CTX_FL_MEM 1
 208 int qed_cxt_get_task_ctx(struct qed_hwfn *p_hwfn,
 209                          u32 tid, u8 ctx_type, void **task_ctx);
 210 #endif