1 /* 2 * This file is part of the Chelsio FCoE driver for Linux. 3 * 4 * Copyright (c) 2008-2012 Chelsio Communications, Inc. All rights reserved. 5 * 6 * This software is available to you under a choice of one of two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenIB.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * provided with the distribution. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 */ 34 35 #ifndef __CSIO_DEFS_H__ 36 #define __CSIO_DEFS_H__ 37 38 #include <linux/kernel.h> 39 #include <linux/stddef.h> 40 #include <linux/timer.h> 41 #include <linux/list.h> 42 #include <linux/bug.h> 43 #include <linux/pci.h> 44 #include <linux/jiffies.h> 45 46 #define CSIO_INVALID_IDX 0xFFFFFFFF 47 #define CSIO_INC_STATS(elem, val) ((elem)->stats.val++) 48 #define CSIO_DEC_STATS(elem, val) ((elem)->stats.val--) 49 #define CSIO_VALID_WWN(__n) ((*__n >> 4) == 0x5 ? true : false) 50 #define CSIO_DID_MASK 0xFFFFFF 51 #define CSIO_WORD_TO_BYTE 4 52 53 #ifndef readq 54 static inline u64 readq(void __iomem *addr) 55 { 56 return readl(addr) + ((u64)readl(addr + 4) << 32); 57 } 58 59 static inline void writeq(u64 val, void __iomem *addr) 60 { 61 writel(val, addr); 62 writel(val >> 32, addr + 4); 63 } 64 #endif 65 66 static inline int 67 csio_list_deleted(struct list_head *list) 68 { 69 return ((list->next == list) && (list->prev == list)); 70 } 71 72 #define csio_list_next(elem) (((struct list_head *)(elem))->next) 73 #define csio_list_prev(elem) (((struct list_head *)(elem))->prev) 74 75 /* State machine */ 76 struct csio_lnode; 77 78 /* State machine evets */ 79 enum csio_ln_ev { 80 CSIO_LNE_NONE = (uint32_t)0, 81 CSIO_LNE_LINKUP, 82 CSIO_LNE_FAB_INIT_DONE, 83 CSIO_LNE_LINK_DOWN, 84 CSIO_LNE_DOWN_LINK, 85 CSIO_LNE_LOGO, 86 CSIO_LNE_CLOSE, 87 CSIO_LNE_MAX_EVENT, 88 }; 89 90 typedef void (*csio_sm_state_t)(struct csio_lnode *ln, enum csio_ln_ev evt); 91 92 struct csio_sm { 93 struct list_head sm_list; 94 csio_sm_state_t sm_state; 95 }; 96 97 static inline void 98 csio_set_state(void *smp, void *state) 99 { 100 ((struct csio_sm *)smp)->sm_state = state; 101 } 102 103 static inline void 104 csio_init_state(struct csio_sm *smp, void *state) 105 { 106 csio_set_state(smp, state); 107 } 108 109 static inline void 110 csio_post_event(void *smp, uint32_t evt) 111 { 112 ((struct csio_sm *)smp)->sm_state(smp, evt); 113 } 114 115 static inline csio_sm_state_t 116 csio_get_state(void *smp) 117 { 118 return ((struct csio_sm *)smp)->sm_state; 119 } 120 121 static inline bool 122 csio_match_state(void *smp, void *state) 123 { 124 return (csio_get_state(smp) == (csio_sm_state_t)state); 125 } 126 127 #define CSIO_ASSERT(cond) BUG_ON(!(cond)) 128 129 #ifdef __CSIO_DEBUG__ 130 #define CSIO_DB_ASSERT(__c) CSIO_ASSERT((__c)) 131 #else 132 #define CSIO_DB_ASSERT(__c) 133 #endif 134 135 #endif /* ifndef __CSIO_DEFS_H__ */ 136