2 * Copyright (C) 2005 - 2009 ServerEngines
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation. The full GNU General
8 * Public License is included in this distribution in the file called COPYING.
10 * Contact Information:
11 * linux-drivers@serverengines.com
14 * 209 N. Fair Oaks Ave
21 #include <linux/pci.h>
22 #include <linux/if_vlan.h>
23 #include <linux/blk-iopoll.h>
26 #define MCC_CQ_LEN 256
34 struct be_queue_info {
35 struct be_dma_mem dma_mem;
37 u16 entry_size; /* Size of an element in the queue */
41 atomic_t used; /* Number of valid elements in the queue */
44 static inline u32 MODULO(u16 val, u16 limit)
46 WARN_ON(limit & (limit - 1));
47 return val & (limit - 1);
50 static inline void index_inc(u16 *index, u16 limit)
52 *index = MODULO((*index + 1), limit);
55 static inline void *queue_head_node(struct be_queue_info *q)
57 return q->dma_mem.va + q->head * q->entry_size;
60 static inline void *queue_tail_node(struct be_queue_info *q)
62 return q->dma_mem.va + q->tail * q->entry_size;
65 static inline void queue_head_inc(struct be_queue_info *q)
67 index_inc(&q->head, q->len);
70 static inline void queue_tail_inc(struct be_queue_info *q)
72 index_inc(&q->tail, q->len);
78 struct be_queue_info q;
79 struct beiscsi_hba *phba;
80 struct be_queue_info *cq;
81 struct blk_iopoll iopoll;
85 struct be_queue_info q;
86 struct be_queue_info cq;
91 u8 __iomem *db; /* Door Bell */
92 u8 __iomem *pcicfg; /* PCI config space */
95 /* Mbox used for cmd request/response */
96 spinlock_t mbox_lock; /* For serializing mbox cmds to BE card */
97 struct be_dma_mem mbox_mem;
98 /* Mbox mem is adjusted to align to 16 bytes. The allocated addr
99 * is stored for freeing purpose */
100 struct be_dma_mem mbox_mem_alloced;
103 struct be_mcc_obj mcc_obj;
104 spinlock_t mcc_lock; /* For serializing mcc cmds to BE card */
105 spinlock_t mcc_cq_lock;
107 /* MCC Async callback */
108 void (*async_cb) (void *adapter, bool link_up);
114 #define PAGE_SHIFT_4K 12
115 #define PAGE_SIZE_4K (1 << PAGE_SHIFT_4K)
117 /* Returns number of pages spanned by the data starting at the given addr */
118 #define PAGES_4K_SPANNED(_address, size) \
119 ((u32)((((size_t)(_address) & (PAGE_SIZE_4K - 1)) + \
120 (size) + (PAGE_SIZE_4K - 1)) >> PAGE_SHIFT_4K))
122 /* Byte offset into the page corresponding to given address */
123 #define OFFSET_IN_PAGE(addr) \
124 ((size_t)(addr) & (PAGE_SIZE_4K-1))
126 /* Returns bit offset within a DWORD of a bitfield */
127 #define AMAP_BIT_OFFSET(_struct, field) \
128 (((size_t)&(((_struct *)0)->field))%32)
130 /* Returns the bit mask of the field that is NOT shifted into location. */
131 static inline u32 amap_mask(u32 bitsize)
133 return (bitsize == 32 ? 0xFFFFFFFF : (1 << bitsize) - 1);
136 static inline void amap_set(void *ptr, u32 dw_offset, u32 mask,
137 u32 offset, u32 value)
139 u32 *dw = (u32 *) ptr + dw_offset;
140 *dw &= ~(mask << offset);
141 *dw |= (mask & value) << offset;
144 #define AMAP_SET_BITS(_struct, field, ptr, val) \
146 offsetof(_struct, field)/32, \
147 amap_mask(sizeof(((_struct *)0)->field)), \
148 AMAP_BIT_OFFSET(_struct, field), \
151 static inline u32 amap_get(void *ptr, u32 dw_offset, u32 mask, u32 offset)
154 return mask & (*(dw + dw_offset) >> offset);
157 #define AMAP_GET_BITS(_struct, field, ptr) \
159 offsetof(_struct, field)/32, \
160 amap_mask(sizeof(((_struct *)0)->field)), \
161 AMAP_BIT_OFFSET(_struct, field))
163 #define be_dws_cpu_to_le(wrb, len) swap_dws(wrb, len)
164 #define be_dws_le_to_cpu(wrb, len) swap_dws(wrb, len)
165 static inline void swap_dws(void *wrb, int len)
171 *dw = cpu_to_le32(*dw);
175 #endif /* __BIG_ENDIAN */
177 #endif /* BEISCSI_H */