1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2004-2005 HighPoint Technologies, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 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 126