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 */
31extern void * HPTLIBAPI os_alloc_page(_VBUS_ARG0);      /* may be cached memory */
32extern void * HPTLIBAPI os_alloc_dma_page(_VBUS_ARG0);  /* must be non-cached memory */
33/* implement if the driver can be unloaded */
34void HPTLIBAPI os_free_page(_VBUS_ARG void *p);
35void HPTLIBAPI os_free_dma_page(_VBUS_ARG void *p);
36
37typedef 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
51typedef 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 */
58void HPTLIBAPI DoXor1(ULONG *p0, ULONG *p1, ULONG *p2, UINT nBytes);
59void 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 */
74extern UINT num_raid5_pages;
75
76/* called by init.c */
77extern void HPTLIBAPI init_raid5_memory(_VBUS_ARG0);
78extern void HPTLIBAPI free_raid5_memory(_VBUS_ARG0);
79
80/* asynchronous flush, may be called periodly */
81extern void HPTLIBAPI flush_stripe_cache(_VBUS_ARG0);
82extern void HPTLIBAPI flush_raid5_async(PVDevice pArray, DPC_PROC done, void *arg);
83
84/* synchronous function called at shutdown */
85extern int HPTLIBAPI flush_raid5(PVDevice pArray);
86
87extern void HPTLIBAPI raid5_free(_VBUS_ARG PVDevice pArray);
88
89struct free_heap_block {
90	struct free_heap_block *next;
91};
92
93#ifndef LIST_H_INCLUDED
94struct list_head {
95	struct list_head *next, *prev;
96};
97#endif
98
99struct free_page {
100	struct free_page *link;
101};
102
103struct 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