LXR linux/drivers/net/ethernet/qlogic/qed/qed

   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_OOO_H
  34#define _QED_OOO_H
  35#include <linux/types.h>
  36#include <linux/list.h>
  37#include <linux/slab.h>
  38#include "qed.h"
  39
  40#define QED_MAX_NUM_ISLES       256
  41#define QED_MAX_NUM_OOO_HISTORY_ENTRIES 512
  42
  43#define QED_OOO_LEFT_BUF        0
  44#define QED_OOO_RIGHT_BUF       1
  45
  46struct qed_ooo_buffer {
  47        struct list_head list_entry;
  48        void *rx_buffer_virt_addr;
  49        dma_addr_t rx_buffer_phys_addr;
  50        u32 rx_buffer_size;
  51        u16 packet_length;
  52        u16 parse_flags;
  53        u16 vlan;
  54        u8 placement_offset;
  55};
  56
  57struct qed_ooo_isle {
  58        struct list_head list_entry;
  59        struct list_head buffers_list;
  60};
  61
  62struct qed_ooo_archipelago {
  63        struct list_head isles_list;
  64};
  65
  66struct qed_ooo_history {
  67        struct ooo_opaque *p_cqes;
  68        u32 head_idx;
  69        u32 num_of_cqes;
  70};
  71
  72struct qed_ooo_info {
  73        struct list_head free_buffers_list;
  74        struct list_head ready_buffers_list;
  75        struct list_head free_isles_list;
  76        struct qed_ooo_archipelago *p_archipelagos_mem;
  77        struct qed_ooo_isle *p_isles_mem;
  78        struct qed_ooo_history ooo_history;
  79        u32 cur_isles_number;
  80        u32 max_isles_number;
  81        u32 gen_isles_number;
  82        u16 max_num_archipelagos;
  83        u16 cid_base;
  84};
  85
  86#if IS_ENABLED(CONFIG_QED_ISCSI)
  87void qed_ooo_save_history_entry(struct qed_hwfn *p_hwfn,
  88                                struct qed_ooo_info *p_ooo_info,
  89                                struct ooo_opaque *p_cqe);
  90
  91int qed_ooo_alloc(struct qed_hwfn *p_hwfn);
  92
  93void qed_ooo_setup(struct qed_hwfn *p_hwfn);
  94
  95void qed_ooo_free(struct qed_hwfn *p_hwfn);
  96
  97void qed_ooo_release_connection_isles(struct qed_hwfn *p_hwfn,
  98                                      struct qed_ooo_info *p_ooo_info,
  99                                      u32 cid);
 100
 101void qed_ooo_release_all_isles(struct qed_hwfn *p_hwfn,
 102                               struct qed_ooo_info *p_ooo_info);
 103
 104void qed_ooo_put_free_buffer(struct qed_hwfn *p_hwfn,
 105                             struct qed_ooo_info *p_ooo_info,
 106                             struct qed_ooo_buffer *p_buffer);
 107
 108struct qed_ooo_buffer *
 109qed_ooo_get_free_buffer(struct qed_hwfn *p_hwfn,
 110                        struct qed_ooo_info *p_ooo_info);
 111
 112void qed_ooo_put_ready_buffer(struct qed_hwfn *p_hwfn,
 113                              struct qed_ooo_info *p_ooo_info,
 114                              struct qed_ooo_buffer *p_buffer, u8 on_tail);
 115
 116struct qed_ooo_buffer *
 117qed_ooo_get_ready_buffer(struct qed_hwfn *p_hwfn,
 118                         struct qed_ooo_info *p_ooo_info);
 119
 120void qed_ooo_delete_isles(struct qed_hwfn *p_hwfn,
 121                          struct qed_ooo_info *p_ooo_info,
 122                          u32 cid, u8 drop_isle, u8 drop_size);
 123
 124void qed_ooo_add_new_isle(struct qed_hwfn *p_hwfn,
 125                          struct qed_ooo_info *p_ooo_info,
 126                          u32 cid,
 127                          u8 ooo_isle, struct qed_ooo_buffer *p_buffer);
 128
 129void qed_ooo_add_new_buffer(struct qed_hwfn *p_hwfn,
 130                            struct qed_ooo_info *p_ooo_info,
 131                            u32 cid,
 132                            u8 ooo_isle,
 133                            struct qed_ooo_buffer *p_buffer, u8 buffer_side);
 134
 135void qed_ooo_join_isles(struct qed_hwfn *p_hwfn,
 136                        struct qed_ooo_info *p_ooo_info, u32 cid,
 137                        u8 left_isle);
 138#else /* IS_ENABLED(CONFIG_QED_ISCSI) */
 139static inline void qed_ooo_save_history_entry(struct qed_hwfn *p_hwfn,
 140                                              struct qed_ooo_info *p_ooo_info,
 141                                              struct ooo_opaque *p_cqe) {}
 142
 143static inline int qed_ooo_alloc(struct qed_hwfn *p_hwfn)
 144{
 145        return -EINVAL;
 146}
 147
 148static inline void qed_ooo_setup(struct qed_hwfn *p_hwfn) {}
 149
 150static inline void qed_ooo_free(struct qed_hwfn *p_hwfn) {}
 151
 152static inline void
 153qed_ooo_release_connection_isles(struct qed_hwfn *p_hwfn,
 154                                 struct qed_ooo_info *p_ooo_info,
 155                                 u32 cid) {}
 156
 157static inline void qed_ooo_release_all_isles(struct qed_hwfn *p_hwfn,
 158                                             struct qed_ooo_info *p_ooo_info)
 159                                             {}
 160
 161static inline void qed_ooo_put_free_buffer(struct qed_hwfn *p_hwfn,
 162                                           struct qed_ooo_info *p_ooo_info,
 163                                           struct qed_ooo_buffer *p_buffer) {}
 164
 165static inline struct qed_ooo_buffer *
 166qed_ooo_get_free_buffer(struct qed_hwfn *p_hwfn,
 167                        struct qed_ooo_info *p_ooo_info) { return NULL; }
 168
 169static inline void qed_ooo_put_ready_buffer(struct qed_hwfn *p_hwfn,
 170                                            struct qed_ooo_info *p_ooo_info,
 171                                            struct qed_ooo_buffer *p_buffer,
 172                                            u8 on_tail) {}
 173
 174static inline struct qed_ooo_buffer *
 175qed_ooo_get_ready_buffer(struct qed_hwfn *p_hwfn,
 176                         struct qed_ooo_info *p_ooo_info) { return NULL; }
 177
 178static inline void qed_ooo_delete_isles(struct qed_hwfn *p_hwfn,
 179                                        struct qed_ooo_info *p_ooo_info,
 180                                        u32 cid, u8 drop_isle, u8 drop_size) {}
 181
 182static inline void qed_ooo_add_new_isle(struct qed_hwfn *p_hwfn,
 183                                        struct qed_ooo_info *p_ooo_info,
 184                                        u32 cid, u8 ooo_isle,
 185                                        struct qed_ooo_buffer *p_buffer) {}
 186
 187static inline void qed_ooo_add_new_buffer(struct qed_hwfn *p_hwfn,
 188                                          struct qed_ooo_info *p_ooo_info,
 189                                          u32 cid, u8 ooo_isle,
 190                                          struct qed_ooo_buffer *p_buffer,
 191                                          u8 buffer_side) {}
 192
 193static inline void qed_ooo_join_isles(struct qed_hwfn *p_hwfn,
 194                                      struct qed_ooo_info *p_ooo_info, u32 cid,
 195                                      u8 left_isle) {}
 196#endif /* IS_ENABLED(CONFIG_QED_ISCSI) */
 197
 198#endif
 199