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

   1 /* QLogic qed NIC Driver
   2  * Copyright (c) 2015 QLogic Corporation
   3  *
   4  * This software is available under the terms of the GNU General Public License
   5  * (GPL) Version 2, available from the file COPYING in the main directory of
   6  * this source tree.
   7  */
   8
   9 #ifndef _QED_OOO_H
  10 #define _QED_OOO_H
  11 #include <linux/types.h>
  12 #include <linux/list.h>
  13 #include <linux/slab.h>
  14 #include "qed.h"
  15
  16 #define QED_MAX_NUM_ISLES       256
  17 #define QED_MAX_NUM_OOO_HISTORY_ENTRIES 512
  18
  19 #define QED_OOO_LEFT_BUF        0
  20 #define QED_OOO_RIGHT_BUF       1
  21
  22 struct qed_ooo_buffer {
  23         struct list_head list_entry;
  24         void *rx_buffer_virt_addr;
  25         dma_addr_t rx_buffer_phys_addr;
  26         u32 rx_buffer_size;
  27         u16 packet_length;
  28         u16 parse_flags;
  29         u16 vlan;
  30         u8 placement_offset;
  31 };
  32
  33 struct qed_ooo_isle {
  34         struct list_head list_entry;
  35         struct list_head buffers_list;
  36 };
  37
  38 struct qed_ooo_archipelago {
  39         struct list_head list_entry;
  40         struct list_head isles_list;
  41         u32 cid;
  42 };
  43
  44 struct qed_ooo_history {
  45         struct ooo_opaque *p_cqes;
  46         u32 head_idx;
  47         u32 num_of_cqes;
  48 };
  49
  50 struct qed_ooo_info {
  51         struct list_head free_buffers_list;
  52         struct list_head ready_buffers_list;
  53         struct list_head free_isles_list;
  54         struct list_head free_archipelagos_list;
  55         struct list_head archipelagos_list;
  56         struct qed_ooo_archipelago *p_archipelagos_mem;
  57         struct qed_ooo_isle *p_isles_mem;
  58         struct qed_ooo_history ooo_history;
  59         u32 cur_isles_number;
  60         u32 max_isles_number;
  61         u32 gen_isles_number;
  62 };
  63
  64 #if IS_ENABLED(CONFIG_QED_ISCSI)
  65 void qed_ooo_save_history_entry(struct qed_hwfn *p_hwfn,
  66                                 struct qed_ooo_info *p_ooo_info,
  67                                 struct ooo_opaque *p_cqe);
  68
  69 struct qed_ooo_info *qed_ooo_alloc(struct qed_hwfn *p_hwfn);
  70
  71 void qed_ooo_release_connection_isles(struct qed_hwfn *p_hwfn,
  72                                       struct qed_ooo_info *p_ooo_info,
  73                                       u32 cid);
  74
  75 void qed_ooo_release_all_isles(struct qed_hwfn *p_hwfn,
  76                                struct qed_ooo_info *p_ooo_info);
  77
  78 void qed_ooo_setup(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info);
  79
  80 void qed_ooo_free(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info);
  81
  82 void qed_ooo_put_free_buffer(struct qed_hwfn *p_hwfn,
  83                              struct qed_ooo_info *p_ooo_info,
  84                              struct qed_ooo_buffer *p_buffer);
  85
  86 struct qed_ooo_buffer *
  87 qed_ooo_get_free_buffer(struct qed_hwfn *p_hwfn,
  88                         struct qed_ooo_info *p_ooo_info);
  89
  90 void qed_ooo_put_ready_buffer(struct qed_hwfn *p_hwfn,
  91                               struct qed_ooo_info *p_ooo_info,
  92                               struct qed_ooo_buffer *p_buffer, u8 on_tail);
  93
  94 struct qed_ooo_buffer *
  95 qed_ooo_get_ready_buffer(struct qed_hwfn *p_hwfn,
  96                          struct qed_ooo_info *p_ooo_info);
  97
  98 void qed_ooo_delete_isles(struct qed_hwfn *p_hwfn,
  99                           struct qed_ooo_info *p_ooo_info,
 100                           u32 cid, u8 drop_isle, u8 drop_size);
 101
 102 void qed_ooo_add_new_isle(struct qed_hwfn *p_hwfn,
 103                           struct qed_ooo_info *p_ooo_info,
 104                           u32 cid,
 105                           u8 ooo_isle, struct qed_ooo_buffer *p_buffer);
 106
 107 void qed_ooo_add_new_buffer(struct qed_hwfn *p_hwfn,
 108                             struct qed_ooo_info *p_ooo_info,
 109                             u32 cid,
 110                             u8 ooo_isle,
 111                             struct qed_ooo_buffer *p_buffer, u8 buffer_side);
 112
 113 void qed_ooo_join_isles(struct qed_hwfn *p_hwfn,
 114                         struct qed_ooo_info *p_ooo_info, u32 cid,
 115                         u8 left_isle);
 116 #else /* IS_ENABLED(CONFIG_QED_ISCSI) */
 117 static inline void qed_ooo_save_history_entry(struct qed_hwfn *p_hwfn,
 118                                               struct qed_ooo_info *p_ooo_info,
 119                                               struct ooo_opaque *p_cqe) {}
 120
 121 static inline struct qed_ooo_info *qed_ooo_alloc(
 122                                 struct qed_hwfn *p_hwfn) { return NULL; }
 123
 124 static inline void
 125 qed_ooo_release_connection_isles(struct qed_hwfn *p_hwfn,
 126                                  struct qed_ooo_info *p_ooo_info,
 127                                  u32 cid) {}
 128
 129 static inline void qed_ooo_release_all_isles(struct qed_hwfn *p_hwfn,
 130                                              struct qed_ooo_info *p_ooo_info)
 131                                              {}
 132
 133 static inline void qed_ooo_setup(struct qed_hwfn *p_hwfn,
 134                                  struct qed_ooo_info *p_ooo_info) {}
 135
 136 static inline void qed_ooo_free(struct qed_hwfn *p_hwfn,
 137                                 struct qed_ooo_info *p_ooo_info) {}
 138
 139 static inline void qed_ooo_put_free_buffer(struct qed_hwfn *p_hwfn,
 140                                            struct qed_ooo_info *p_ooo_info,
 141                                            struct qed_ooo_buffer *p_buffer) {}
 142
 143 static inline struct qed_ooo_buffer *
 144 qed_ooo_get_free_buffer(struct qed_hwfn *p_hwfn,
 145                         struct qed_ooo_info *p_ooo_info) { return NULL; }
 146
 147 static inline void qed_ooo_put_ready_buffer(struct qed_hwfn *p_hwfn,
 148                                             struct qed_ooo_info *p_ooo_info,
 149                                             struct qed_ooo_buffer *p_buffer,
 150                                             u8 on_tail) {}
 151
 152 static inline struct qed_ooo_buffer *
 153 qed_ooo_get_ready_buffer(struct qed_hwfn *p_hwfn,
 154                          struct qed_ooo_info *p_ooo_info) { return NULL; }
 155
 156 static inline void qed_ooo_delete_isles(struct qed_hwfn *p_hwfn,
 157                                         struct qed_ooo_info *p_ooo_info,
 158                                         u32 cid, u8 drop_isle, u8 drop_size) {}
 159
 160 static inline void qed_ooo_add_new_isle(struct qed_hwfn *p_hwfn,
 161                                         struct qed_ooo_info *p_ooo_info,
 162                                         u32 cid, u8 ooo_isle,
 163                                         struct qed_ooo_buffer *p_buffer) {}
 164
 165 static inline void qed_ooo_add_new_buffer(struct qed_hwfn *p_hwfn,
 166                                           struct qed_ooo_info *p_ooo_info,
 167                                           u32 cid, u8 ooo_isle,
 168                                           struct qed_ooo_buffer *p_buffer,
 169                                           u8 buffer_side) {}
 170
 171 static inline void qed_ooo_join_isles(struct qed_hwfn *p_hwfn,
 172                                       struct qed_ooo_info *p_ooo_info, u32 cid,
 173                                       u8 left_isle) {}
 174 #endif /* IS_ENABLED(CONFIG_QED_ISCSI) */
 175
 176 #endif