The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/raid/hptmv/raid5n.h

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    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

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