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

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2004-2005 HighPoint Technologies, Inc.
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD$
     */
    #ifdef _RAID5N_
    
    /* OS provided function, call only at initialization time */
    extern void * HPTLIBAPI os_alloc_page(_VBUS_ARG0);      /* may be cached memory */
    extern void * HPTLIBAPI os_alloc_dma_page(_VBUS_ARG0);  /* must be non-cached memory */
    /* implement if the driver can be unloaded */
    void HPTLIBAPI os_free_page(_VBUS_ARG void *p);
    void HPTLIBAPI os_free_dma_page(_VBUS_ARG void *p);
    
    typedef void (* HPTLIBAPI xfer_done_fn)(_VBUS_ARG void *tag, int result);
    
    
    #define DATAXFER_STACK_VAR
    #define DATAXFER_INIT_ARG 0
    
    #define dataxfer_init(arg) 0
    #define dataxfer_add_item(handle, host, cache, bytes, tocache) \
                    if (tocache) memcpy((PUCHAR)(cache), (PUCHAR)(host), bytes); \
                    else memcpy((PUCHAR)(host), (PUCHAR)(cache), bytes)
    #define dataxfer_exec(handle, done, tag) done(_VBUS_P tag, 0)
    #define dataxfer_poll()
    
    
    typedef void (* HPTLIBAPI xor_done_fn)(_VBUS_ARG void *tag, int result);
    
    
    #define XOR_STACK_VAR
    #define XOR_INIT_ARG 0
    
    /* DoXor1, DoXor2 provided by platform dependent code */
    void HPTLIBAPI DoXor1(ULONG *p0, ULONG *p1, ULONG *p2, UINT nBytes);
    void HPTLIBAPI DoXor2(ULONG *p0, ULONG *p2, UINT nBytes);
    #define max_xor_way 2
    #define xor_init(arg) 0
    #define xor_add_item(handle, dest, src, nsrc, bytes) \
            do {\
                    if (((void**)(src))[0]==dest)\
                            DoXor2((PULONG)(dest), ((PULONG *)(src))[1], bytes);\
                    else\
                            DoXor1((PULONG)(dest), ((PULONG *)(src))[0], ((PULONG *)(src))[1], bytes);\
            } while(0)
    #define xor_exec(handle, done, tag) done(_VBUS_P tag, 0)
    #define xor_poll()
    
    
    /* set before calling init_raid5_memory */
    extern UINT num_raid5_pages;
    
    /* called by init.c */
    extern void HPTLIBAPI init_raid5_memory(_VBUS_ARG0);
    extern void HPTLIBAPI free_raid5_memory(_VBUS_ARG0);
    
    /* asynchronous flush, may be called periodly */
    extern void HPTLIBAPI flush_stripe_cache(_VBUS_ARG0);
    extern void HPTLIBAPI flush_raid5_async(PVDevice pArray, DPC_PROC done, void *arg);
    
    /* synchronous function called at shutdown */
    extern int HPTLIBAPI flush_raid5(PVDevice pArray);
    
    extern void HPTLIBAPI raid5_free(_VBUS_ARG PVDevice pArray);
    
    struct free_heap_block {
            struct free_heap_block *next;
    };
    
    #ifndef LIST_H_INCLUDED
    struct list_head {
            struct list_head *next, *prev;
    };
    #endif
   
   struct free_page {
           struct free_page *link;
   };
   
   struct r5_global_data {
           int enable_write_back;
           struct list_head inactive_list;
           struct list_head dirty_list;
           struct list_head active_list;
   #ifdef R5_CONTIG_CACHE
           BUS_ADDR page_base_phys;
           PUCHAR page_base_virt;
           PUCHAR page_current;
   #endif
           struct free_heap_block *free_heap_slots[10];
           struct free_page *free_pages;
           UINT num_free_pages;
           UINT active_stripes;
           UINT num_flushing;
           PCommand cache_wait_list;
           
           LBA_T __start[MAX_MEMBERS];
           USHORT __sectors[MAX_MEMBERS];
   };
   
   
   #endif

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