sys/dev/raid/hptmv/raid5n.h

   1 /*
   2  * Copyright (c) 2004-2005 HighPoint Technologies, Inc.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/sys/dev/hptmv/raid5n.h,v 1.4 2009/04/07 16:38:25 delphij Exp $
  27  */
  28 #ifdef _RAID5N_
  29
  30 /* OS provided function, call only at initialization time */
  31 extern void * HPTLIBAPI os_alloc_page(_VBUS_ARG0);      /* may be cached memory */
  32 extern void * HPTLIBAPI os_alloc_dma_page(_VBUS_ARG0);  /* must be non-cached memory */
  33 /* implement if the driver can be unloaded */
  34 void HPTLIBAPI os_free_page(_VBUS_ARG void *p);
  35 void HPTLIBAPI os_free_dma_page(_VBUS_ARG void *p);
  36
  37 typedef void (* HPTLIBAPI xfer_done_fn)(_VBUS_ARG void *tag, int result);
  38
  39
  40 #define DATAXFER_STACK_VAR
  41 #define DATAXFER_INIT_ARG 0
  42
  43 #define dataxfer_init(arg) 0
  44 #define dataxfer_add_item(handle, host, cache, bytes, tocache) \
  45                 if (tocache) memcpy((PUCHAR)(cache), (PUCHAR)(host), bytes); \
  46                 else memcpy((PUCHAR)(host), (PUCHAR)(cache), bytes)
  47 #define dataxfer_exec(handle, done, tag) done(_VBUS_P tag, 0)
  48 #define dataxfer_poll()
  49
  50
  51 typedef void (* HPTLIBAPI xor_done_fn)(_VBUS_ARG void *tag, int result);
  52
  53
  54 #define XOR_STACK_VAR
  55 #define XOR_INIT_ARG 0
  56
  57 /* DoXor1, DoXor2 provided by platform dependent code */
  58 void HPTLIBAPI DoXor1(ULONG *p0, ULONG *p1, ULONG *p2, UINT nBytes);
  59 void HPTLIBAPI DoXor2(ULONG *p0, ULONG *p2, UINT nBytes);
  60 #define max_xor_way 2
  61 #define xor_init(arg) 0
  62 #define xor_add_item(handle, dest, src, nsrc, bytes) \
  63         do {\
  64                 if (((void**)(src))[0]==dest)\
  65                         DoXor2((PULONG)(dest), ((PULONG *)(src))[1], bytes);\
  66                 else\
  67                         DoXor1((PULONG)(dest), ((PULONG *)(src))[0], ((PULONG *)(src))[1], bytes);\
  68         } while(0)
  69 #define xor_exec(handle, done, tag) done(_VBUS_P tag, 0)
  70 #define xor_poll()
  71
  72
  73 /* set before calling init_raid5_memory */
  74 extern UINT num_raid5_pages;
  75
  76 /* called by init.c */
  77 extern void HPTLIBAPI init_raid5_memory(_VBUS_ARG0);
  78 extern void HPTLIBAPI free_raid5_memory(_VBUS_ARG0);
  79
  80 /* asynchronous flush, may be called periodly */
  81 extern void HPTLIBAPI flush_stripe_cache(_VBUS_ARG0);
  82 extern void HPTLIBAPI flush_raid5_async(PVDevice pArray, DPC_PROC done, void *arg);
  83
  84 /* synchronous function called at shutdown */
  85 extern int HPTLIBAPI flush_raid5(PVDevice pArray);
  86
  87 extern void HPTLIBAPI raid5_free(_VBUS_ARG PVDevice pArray);
  88
  89 struct free_heap_block {
  90         struct free_heap_block *next;
  91 };
  92
  93 #ifndef LIST_H_INCLUDED
  94 struct list_head {
  95         struct list_head *next, *prev;
  96 };
  97 #endif
  98
  99 struct free_page {
 100         struct free_page *link;
 101 };
 102
 103 struct r5_global_data {
 104         int enable_write_back;
 105         struct list_head inactive_list;
 106         struct list_head dirty_list;
 107         struct list_head active_list;
 108 #ifdef R5_CONTIG_CACHE
 109         BUS_ADDR page_base_phys;
 110         PUCHAR page_base_virt;
 111         PUCHAR page_current;
 112 #endif
 113         struct free_heap_block *free_heap_slots[10];
 114         struct free_page *free_pages;
 115         UINT num_free_pages;
 116         UINT active_stripes;
 117         UINT num_flushing;
 118         PCommand cache_wait_list;
 119
 120         LBA_T __start[MAX_MEMBERS];
 121         USHORT __sectors[MAX_MEMBERS];
 122 };
 123
 124
 125 #endif