| 1 | /* $Id: aspilib.cpp,v 1.4 2000-09-14 19:09:16 sandervl Exp $ */
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| 2 | /*
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| 3 | * ASPI Router Library
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| 4 | * for Odin WNASPI32.DLL
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| 5 | *
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| 6 | * This is a sample library which shows how to send SRB's to the
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| 7 | * ASPI Router device driver. USE AT YOUR OWN RISK!!
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| 8 | *
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| 9 | * Copyright (C) 1997 Daniel Dorau
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| 10 | * Copyright (C) 2000 Przemyslaw Dobrowolski <dobrawka@asua.org.pl>
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| 11 | *
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| 12 | */
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| 13 | #define INCL_DOSFILEMGR
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| 14 | #define INCL_DOSDEVICES
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| 15 | #define INCL_DOSDEVIOCTL
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| 16 | #define INCL_DOSSEMAPHORES
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| 17 | #define INCL_DOSMEMMGR
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| 18 | #define INCL_DOSERRORS
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| 19 | #include <os2wrap.h>
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| 20 | #include <string.h>
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| 21 | #include <stdio.h>
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| 22 | #include <misc.h>
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| 23 | #include "aspilib.h"
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| 24 |
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| 25 | //***************************************************************************
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| 26 | //* *
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| 27 | //* scsiObj() *
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| 28 | //* *
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| 29 | //* Standard constructor *
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| 30 | //* *
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| 31 | //***************************************************************************
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| 32 | scsiObj::scsiObj() : buffer(NULL)
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| 33 | {
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| 34 | memset(&SRBlock, 0, sizeof(SRBlock));
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| 35 | memset(&AbortSRB, 0, sizeof(AbortSRB));
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| 36 | }
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| 37 |
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| 38 |
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| 39 | //***************************************************************************
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| 40 | //* *
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| 41 | //* ~scsiObj() *
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| 42 | //* *
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| 43 | //* Standard destructor *
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| 44 | //* *
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| 45 | //***************************************************************************
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| 46 | scsiObj::~scsiObj()
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| 47 | {
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| 48 | }
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| 49 |
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| 50 |
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| 51 | //***************************************************************************
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| 52 | //* *
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| 53 | //* BOOL openDriver() *
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| 54 | //* *
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| 55 | //* Opens the ASPI Router device driver and sets device_handle. *
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| 56 | //* Returns: *
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| 57 | //* TRUE - Success *
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| 58 | //* FALSE - Unsuccessful opening of device driver *
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| 59 | //* *
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| 60 | //* Preconditions: ASPI Router driver has be loaded *
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| 61 | //* *
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| 62 | //***************************************************************************
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| 63 | BOOL scsiObj::openDriver()
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| 64 | {
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| 65 | ULONG rc; // return value
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| 66 | ULONG ActionTaken; // return value
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| 67 |
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| 68 | rc = DosOpen((PSZ) "aspirou$", // open driver
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| 69 | &driver_handle,
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| 70 | &ActionTaken,
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| 71 | 0,
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| 72 | 0,
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| 73 | FILE_OPEN,
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| 74 | OPEN_SHARE_DENYREADWRITE | OPEN_ACCESS_READWRITE,
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| 75 | NULL);
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| 76 | if (rc) return FALSE; // opening failed -> return false
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| 77 | return TRUE;
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| 78 | }
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| 79 |
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| 80 |
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| 81 | //***************************************************************************
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| 82 | //* *
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| 83 | //* BOOL closeDriver() *
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| 84 | //* *
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| 85 | //* Closes the device driver *
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| 86 | //* Returns: *
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| 87 | //* TRUE - Success *
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| 88 | //* FALSE - Unsuccessful closing of device driver *
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| 89 | //* *
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| 90 | //* Preconditions: ASPI Router driver has be opened with openDriver *
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| 91 | //* *
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| 92 | //***************************************************************************
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| 93 | BOOL scsiObj::closeDriver()
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| 94 | {
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| 95 | ULONG rc; // return value
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| 96 |
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| 97 | rc = DosClose(driver_handle);
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| 98 | if (rc) return FALSE; // closing failed -> return false
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| 99 | return TRUE;
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| 100 | }
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| 101 |
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| 102 |
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| 103 | //***************************************************************************
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| 104 | //* *
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| 105 | //* BOOL initSemaphore() *
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| 106 | //* *
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| 107 | //* Creates a new Event Semaphore and passes its handle to ASPI Router. *
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| 108 | //* Returns: *
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| 109 | //* TRUE - Success *
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| 110 | //* FALSE - Unsuccessful creation of event semaphore *
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| 111 | //* *
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| 112 | //* Preconditions: driver_handle has to be set with openDriver *
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| 113 | //* *
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| 114 | //***************************************************************************
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| 115 | BOOL scsiObj::initSemaphore()
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| 116 | {
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| 117 | ULONG rc; // return value
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| 118 | USHORT openSemaReturn; // return value
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| 119 | unsigned long cbreturn;
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| 120 | unsigned long cbParam;
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| 121 |
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| 122 | rc = DosCreateEventSem(NULL, &postSema, // create event semaphore
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| 123 | DC_SEM_SHARED, 0);
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| 124 | if (rc) return FALSE; // DosCreateEventSem failed
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| 125 | rc = DosDevIOCtl(driver_handle, 0x92, 0x03, // pass semaphore handle
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| 126 | (void*) &postSema, sizeof(HEV), // to driver
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| 127 | &cbParam, (void*) &openSemaReturn,
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| 128 | sizeof(USHORT), &cbreturn);
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| 129 | if (rc) return FALSE; // DosDevIOCtl failed
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| 130 | if (openSemaReturn) return FALSE; // Driver could not open semaphore
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| 131 |
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| 132 | return TRUE;
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| 133 | }
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| 134 |
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| 135 |
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| 136 | //***************************************************************************
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| 137 | //* *
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| 138 | //* BOOL closeSemaphore() *
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| 139 | //* *
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| 140 | //* Closes the Event Semaphore *
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| 141 | //* Returns: *
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| 142 | //* TRUE - Success *
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| 143 | //* FALSE - Unsuccessful closing of event semaphore *
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| 144 | //* *
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| 145 | //* Preconditions: init_Semaphore has to be called successfully before *
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| 146 | //* *
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| 147 | //***************************************************************************
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| 148 | BOOL scsiObj::closeSemaphore()
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| 149 | {
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| 150 | ULONG rc; // return value
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| 151 |
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| 152 | rc = DosCloseEventSem(postSema); // close event semaphore
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| 153 | if (rc) return FALSE; // DosCloseEventSem failed
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| 154 | return TRUE;
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| 155 | }
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| 156 |
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| 157 |
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| 158 | //***************************************************************************
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| 159 | //* *
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| 160 | //* BOOL initBuffer() *
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| 161 | //* *
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| 162 | //* Sends the address of the data buffer to ASPI Router so that it can *
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| 163 | //* lock down the segment. *
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| 164 | //* Returns: *
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| 165 | //* TRUE - Success *
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| 166 | //* FALSE - Unsuccessful locking of buffer segment *
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| 167 | //* *
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| 168 | //* Preconditions: (called from init()) *
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| 169 | //* *
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| 170 | //***************************************************************************
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| 171 | BOOL scsiObj::initBuffer()
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| 172 | {
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| 173 | ULONG rc; // return value
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| 174 | USHORT lockSegmentReturn; // return value
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| 175 | unsigned long cbreturn;
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| 176 | unsigned long cbParam;
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| 177 |
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| 178 | rc = DosDevIOCtl(driver_handle, 0x92, 0x04, // pass buffer pointer
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| 179 | (void*) buffer, sizeof(PVOID), // to driver
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| 180 | &cbParam, (void*) &lockSegmentReturn,
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| 181 | sizeof(USHORT), &cbreturn);
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| 182 | if (rc) return FALSE; // DosDevIOCtl failed
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| 183 | if (lockSegmentReturn) return FALSE; // Driver could not lock segment
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| 184 |
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| 185 | return TRUE;
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| 186 | }
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| 187 |
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| 188 |
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| 189 | //***************************************************************************
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| 190 | //* *
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| 191 | //* BOOL init(ULONG bufsize) *
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| 192 | //* *
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| 193 | //* This inits the ASPI library and ASPI router driver. *
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| 194 | //* Allocates the data buffer and passes its address to the driver *
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| 195 | //* Returns: *
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| 196 | //* TRUE - Success *
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| 197 | //* FALSE - Unsuccessful initialization of driver and library *
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| 198 | //* *
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| 199 | //* Preconditions: ASPI router device driver has to be loaded *
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| 200 | //* *
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| 201 | //***************************************************************************
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| 202 | BOOL scsiObj::init(ULONG bufsize)
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| 203 | {
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| 204 | BOOL success;
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| 205 | ULONG rc;
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| 206 |
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| 207 | rc = DosAllocMem(&buffer, bufsize, OBJ_TILE | PAG_READ | PAG_WRITE | PAG_COMMIT);
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| 208 | if (rc) return FALSE;
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| 209 | success=openDriver(); // call openDriver member function
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| 210 | if (!success) return FALSE;
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| 211 | success=initSemaphore(); // call initSemaphore member function
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| 212 | if (!success) return FALSE;
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| 213 |
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| 214 | success=initBuffer();
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| 215 |
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| 216 | return TRUE;
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| 217 | }
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| 218 |
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| 219 |
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| 220 | //***************************************************************************
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| 221 | //* *
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| 222 | //* BOOL close() *
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| 223 | //* *
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| 224 | //* This closes the ASPI library and ASPI router driver and frees *
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| 225 | //* the memory allocated for the data buffer.
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| 226 | //* Returns: *
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| 227 | //* TRUE - Success *
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| 228 | //* FALSE - Unsuccessful closing of library and driver *
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| 229 | //* *
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| 230 | //* Preconditions: init() should be called successfully before *
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| 231 | //* *
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| 232 | //***************************************************************************
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| 233 | BOOL scsiObj::close()
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| 234 | {
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| 235 | BOOL success;
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| 236 | ULONG rc;
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| 237 |
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| 238 | success=closeSemaphore(); // call closeSemaphore member function
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| 239 | if (!success)
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| 240 | {
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| 241 | printf("closeSemaphore() unsuccessful.\n");
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| 242 | return FALSE;
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| 243 | }
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| 244 | success=closeDriver(); // call closeDriver member function
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| 245 | if (!success)
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| 246 | {
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| 247 | return FALSE;
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| 248 | printf("closeDriver() unsucessful.\n");
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| 249 | }
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| 250 | rc = DosFreeMem(buffer);
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| 251 | if (rc)
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| 252 | {
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| 253 | printf("DosFreeMem unsuccessful. return code: %ld\n", rc);
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| 254 | return FALSE;
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| 255 | }
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| 256 | return TRUE;
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| 257 | }
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| 258 |
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| 259 |
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| 260 | //***************************************************************************
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| 261 | //* *
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| 262 | //* BOOL waitPost() *
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| 263 | //* *
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| 264 | //* Waits for postSema being posted by device driver *
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| 265 | //* Returns: *
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| 266 | //* TRUE - Success *
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| 267 | //* FALSE - Unsuccessful access of event semaphore *
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| 268 | //* *
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| 269 | //* Preconditions: init() has to be called successfully before *
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| 270 | //* *
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| 271 | //***************************************************************************
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| 272 | BOOL scsiObj::waitPost()
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| 273 | {
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| 274 | ULONG count=0;
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| 275 | ULONG rc; // return value
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| 276 |
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| 277 | rc = DosWaitEventSem(postSema, -1); // wait forever
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| 278 | if (rc) return FALSE; // DosWaitEventSem failed
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| 279 | rc = DosResetEventSem(postSema, &count); // reset semaphore
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| 280 | if (rc) return FALSE; // DosResetEventSem failed
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| 281 | return TRUE;
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| 282 | }
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| 283 |
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| 284 | //***************************************************************************
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| 285 | //* *
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| 286 | //* ULONG HA_inquiry(UCHAR ha) *
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| 287 | //* *
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| 288 | //* Sends a SRB containing a Host Adapter Inquiry command *
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| 289 | //* Returns: *
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| 290 | //* 0 - Success *
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| 291 | //* 1 - DevIOCtl failed *
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| 292 | //* 2 - Host Adapter not installed *
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| 293 | //* *
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| 294 | //* Preconditions: driver has to be opened *
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| 295 | //* *
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| 296 | //***************************************************************************
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| 297 | ULONG scsiObj::HA_inquiry(UCHAR ha)
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| 298 | {
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| 299 | ULONG rc; // return value
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| 300 | unsigned long cbreturn;
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| 301 | unsigned long cbParam;
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| 302 |
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| 303 | SRBlock.cmd=SRB_Inquiry; // host adapter inquiry
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| 304 | SRBlock.ha_num=ha; // host adapter number
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| 305 | SRBlock.flags=0; // no flags set
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| 306 |
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| 307 | rc = DosDevIOCtl(driver_handle, 0x92, 0x02, (void*) &SRBlock, sizeof(SRBOS2), &cbParam,
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| 308 | (void*) &SRBlock, sizeof(SRBOS2), &cbreturn);
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| 309 | if (rc)
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| 310 | return 1; // DosDevIOCtl failed
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| 311 | if (SRBlock.status != SRB_Done) return 2;
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| 312 | return 0;
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| 313 | }
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| 314 |
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| 315 |
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| 316 | //***************************************************************************
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| 317 | //* *
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| 318 | //* ULONG getDeviceType(UCHAR id, UCHAR lun) *
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| 319 | //* *
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| 320 | //* Sends a SRB containing a Get Device Type command *
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| 321 | //* Returns: *
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| 322 | //* 0 - Success *
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| 323 | //* 1 - DevIOCtl failed *
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| 324 | //* 2 - Device not installed *
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| 325 | //* *
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| 326 | //* Preconditions: driver has to be opened *
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| 327 | //* *
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| 328 | //***************************************************************************
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| 329 | ULONG scsiObj::getDeviceType(UCHAR ha_num, UCHAR id, UCHAR lun)
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| 330 | {
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| 331 | ULONG rc; // return value
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| 332 | unsigned long cbreturn;
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| 333 | unsigned long cbParam;
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| 334 |
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| 335 | SRBlock.cmd=SRB_Device; // get device type
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| 336 | SRBlock.ha_num=ha_num; // host adapter number
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| 337 | SRBlock.flags=0; // no flags set
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| 338 | SRBlock.u.dev.target=id; // target id
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| 339 | SRBlock.u.dev.lun=lun; // target LUN
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| 340 |
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| 341 | rc = DosDevIOCtl(driver_handle, 0x92, 0x02, (void*) &SRBlock, sizeof(SRBOS2), &cbParam,
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| 342 | (void*) &SRBlock, sizeof(SRBOS2), &cbreturn);
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| 343 | if (rc)
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| 344 | return 1; // DosDevIOCtl failed
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| 345 | if (SRBlock.status != SRB_Done) return 2;
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| 346 | return 0;
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| 347 | }
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| 348 |
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| 349 |
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| 350 | //***************************************************************************
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| 351 | //* *
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| 352 | //* ULONG resetDevice(UCHAR id, UCHAR lun) *
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| 353 | //* *
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| 354 | //* Sends a SRB containing a Reset Device command *
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| 355 | //* Returns: *
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| 356 | //* 0 - Success *
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| 357 | //* 1 - DevIOCtl failed *
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| 358 | //* 2 - Semaphore access failure *
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| 359 | //* 3 - SCSI command failed *
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| 360 | //* *
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| 361 | //* Preconditions: init() has to be called successfully before *
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| 362 | //* *
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| 363 | //***************************************************************************
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| 364 | ULONG scsiObj::resetDevice(UCHAR ha_num,UCHAR id, UCHAR lun)
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| 365 | {
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| 366 | ULONG rc; // return value
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| 367 | unsigned long cbreturn;
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| 368 | unsigned long cbParam;
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| 369 | BOOL success;
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| 370 |
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| 371 | SRBlock.cmd=SRB_Reset; // reset device
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| 372 | SRBlock.ha_num=ha_num; // host adapter number
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| 373 | SRBlock.flags=SRB_Post; // posting enabled
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| 374 | SRBlock.u.res.target=id; // target id
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| 375 | SRBlock.u.res.lun=lun; // target LUN
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| 376 |
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| 377 | rc = DosDevIOCtl(driver_handle, 0x92, 0x02, (void*) &SRBlock, sizeof(SRBOS2), &cbParam,
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| 378 | (void*) &SRBlock, sizeof(SRBOS2), &cbreturn);
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| 379 | if (rc)
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| 380 | return 1; // DosDevIOCtl failed
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| 381 | else
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| 382 | {
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| 383 | success=waitPost(); // wait for SRB being processed
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| 384 | if (!success) return 2; // semaphore could not be accessed
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| 385 | }
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| 386 | if (SRBlock.status != SRB_Done) return 3;
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| 387 | return 0;
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| 388 | }
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| 389 |
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| 390 |
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| 391 | //***************************************************************************
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| 392 | //* *
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| 393 | //* ULONG abort() *
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| 394 | //* *
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| 395 | //* Sends a SRB containing a Get Device Type command *
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| 396 | //* Returns: *
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| 397 | //* 0 - Success *
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| 398 | //* 1 - DevIOCtl failed *
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| 399 | //* 2 - Abort SRB not successful *
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| 400 | //* *
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| 401 | //* Preconditions: driver has to be opened *
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| 402 | //* *
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| 403 | //***************************************************************************
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| 404 | ULONG scsiObj::abort()
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| 405 | {
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| 406 | ULONG rc; // return value
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| 407 | unsigned long cbreturn;
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| 408 | unsigned long cbParam;
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| 409 |
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| 410 | AbortSRB.cmd=SRBOS2_Abort; // abort SRB
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| 411 | AbortSRB.ha_num=0; // host adapter number
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| 412 | AbortSRB.flags=0; // no flags set
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| 413 | AbortSRB.u.abt.srb=&SRBlock; // SRB to abort
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| 414 |
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| 415 | rc = DosDevIOCtl(driver_handle, 0x92, 0x02, (void*) &AbortSRB, sizeof(SRBOS2), &cbParam,
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| 416 | (void*) &AbortSRB, sizeof(SRBOS2), &cbreturn);
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| 417 | if (rc)
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| 418 | return 1; // DosDevIOCtl failed
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| 419 | if (SRBlock.status != SRB_Done) return 2;
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| 420 | return 0;
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| 421 | }
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| 422 | //***************************************************************************
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| 423 | //***************************************************************************
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| 424 | ULONG scsiObj::getNumHosts()
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| 425 | { int i,j=0;
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| 426 | ULONG rc;
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| 427 |
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| 428 | for (i=0;i<15;i++)
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| 429 | {
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| 430 | rc=HA_inquiry(i);
|
|---|
| 431 | if (rc==0) j++;
|
|---|
| 432 | }
|
|---|
| 433 | return j;
|
|---|
| 434 | }
|
|---|
| 435 | //***************************************************************************
|
|---|
| 436 | //***************************************************************************
|
|---|
| 437 | ULONG scsiObj::SendSRBlock(VOID)
|
|---|
| 438 | {
|
|---|
| 439 | ULONG ulParam, ulReturn;
|
|---|
| 440 |
|
|---|
| 441 | return DosDevIOCtl( (HFILE) driver_handle,
|
|---|
| 442 | 0x92,
|
|---|
| 443 | 0x02,
|
|---|
| 444 | (void*) &SRBlock,
|
|---|
| 445 | sizeof(SRBOS2),
|
|---|
| 446 | &ulParam,
|
|---|
| 447 | (void*) &SRBlock,
|
|---|
| 448 | sizeof(SRBOS2),
|
|---|
| 449 | &ulReturn);
|
|---|
| 450 | }
|
|---|
| 451 | //***************************************************************************
|
|---|
| 452 | //***************************************************************************
|
|---|
| 453 | BOOL fGainDrvAccess( BOOL fWait,
|
|---|
| 454 | ULONG *phSem)
|
|---|
| 455 | {
|
|---|
| 456 | ULONG rc;
|
|---|
| 457 | rc = DosCreateMutexSem ( "\\SEM32\\ODIN\\ASPIROUT",
|
|---|
| 458 | (HMTX*)phSem,
|
|---|
| 459 | 0,
|
|---|
| 460 | TRUE);
|
|---|
| 461 | if(NO_ERROR==rc)
|
|---|
| 462 | return TRUE;
|
|---|
| 463 | if((ERROR_DUPLICATE_NAME!=rc)||(!fWait))
|
|---|
| 464 | return FALSE;
|
|---|
| 465 | rc = DosOpenMutexSem ( "\\SEM32\\ODIN\\ASPIROUT",
|
|---|
| 466 | (HMTX*)phSem);
|
|---|
| 467 | if(NO_ERROR!=rc)
|
|---|
| 468 | return FALSE;
|
|---|
| 469 |
|
|---|
| 470 | rc = DosRequestMutexSem( (HMTX)(*phSem),
|
|---|
| 471 | SEM_INDEFINITE_WAIT);
|
|---|
| 472 |
|
|---|
| 473 | if(NO_ERROR!=rc)
|
|---|
| 474 | return FALSE;
|
|---|
| 475 |
|
|---|
| 476 | return TRUE;
|
|---|
| 477 | }
|
|---|
| 478 | //***************************************************************************
|
|---|
| 479 | //***************************************************************************
|
|---|
| 480 | BOOL fReleaseDrvAccess(ULONG hSem)
|
|---|
| 481 | {
|
|---|
| 482 | ULONG rc;
|
|---|
| 483 | BOOL frc = TRUE;
|
|---|
| 484 |
|
|---|
| 485 | rc = DosReleaseMutexSem((HMTX)hSem);
|
|---|
| 486 | if(NO_ERROR!=rc)
|
|---|
| 487 | frc=FALSE;
|
|---|
| 488 |
|
|---|
| 489 | rc = DosCloseMutexSem((HMTX)hSem);
|
|---|
| 490 | if(NO_ERROR!=rc)
|
|---|
| 491 | frc=FALSE;
|
|---|
| 492 |
|
|---|
| 493 | return frc;
|
|---|
| 494 | }
|
|---|
