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 46 struct 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 57 struct qed_ooo_isle { 58 struct list_head list_entry; 59 struct list_head buffers_list; 60 }; 61 62 struct qed_ooo_archipelago { 63 struct list_head isles_list; 64 }; 65 66 struct qed_ooo_history { 67 struct ooo_opaque *p_cqes; 68 u32 head_idx; 69 u32 num_of_cqes; 70 }; 71 72 struct 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_OOO) 87 void 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 91 int qed_ooo_alloc(struct qed_hwfn *p_hwfn); 92 93 void qed_ooo_setup(struct qed_hwfn *p_hwfn); 94 95 void qed_ooo_free(struct qed_hwfn *p_hwfn); 96 97 void qed_ooo_release_connection_isles(struct qed_hwfn *p_hwfn, 98 struct qed_ooo_info *p_ooo_info, 99 u32 cid); 100 101 void qed_ooo_release_all_isles(struct qed_hwfn *p_hwfn, 102 struct qed_ooo_info *p_ooo_info); 103 104 void 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); 107 108 struct qed_ooo_buffer * 109 qed_ooo_get_free_buffer(struct qed_hwfn *p_hwfn, 110 struct qed_ooo_info *p_ooo_info); 111 112 void 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); 115 116 struct qed_ooo_buffer * 117 qed_ooo_get_ready_buffer(struct qed_hwfn *p_hwfn, 118 struct qed_ooo_info *p_ooo_info); 119 120 void 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); 123 124 void 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); 128 129 void 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); 134 135 void 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) */ 139 static 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) {} 142 143 static inline int qed_ooo_alloc(struct qed_hwfn *p_hwfn) 144 { 145 return -EINVAL; 146 } 147 148 static inline void qed_ooo_setup(struct qed_hwfn *p_hwfn) {} 149 150 static inline void qed_ooo_free(struct qed_hwfn *p_hwfn) {} 151 152 static inline void 153 qed_ooo_release_connection_isles(struct qed_hwfn *p_hwfn, 154 struct qed_ooo_info *p_ooo_info, 155 u32 cid) {} 156 157 static inline void qed_ooo_release_all_isles(struct qed_hwfn *p_hwfn, 158 struct qed_ooo_info *p_ooo_info) 159 {} 160 161 static 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) {} 164 165 static inline struct qed_ooo_buffer * 166 qed_ooo_get_free_buffer(struct qed_hwfn *p_hwfn, 167 struct qed_ooo_info *p_ooo_info) { return NULL; } 168 169 static 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) {} 173 174 static inline struct qed_ooo_buffer * 175 qed_ooo_get_ready_buffer(struct qed_hwfn *p_hwfn, 176 struct qed_ooo_info *p_ooo_info) { return NULL; } 177 178 static 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) {} 181 182 static 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) {} 186 187 static 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) {} 192 193 static 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