2 * Copyright 2000 David Elliott
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include "wine/windef16.h"
26 #include "wine/winaspi.h"
27 #include "wine/debug.h"
28 #include "miscemu.h" /* DOSMEM_* */
32 WINE_DEFAULT_DEBUG_CHANNEL(aspi);
34 static HINSTANCE hWNASPI32 = INVALID_HANDLE_VALUE;
35 static DWORD (__cdecl *pSendASPI32Command) (LPSRB) = NULL;
38 DOSASPI_PostProc( SRB_ExecSCSICmd *lpPRB )
44 memcpy(&ptrSRB,lpPRB->SenseArea + lpPRB->SRB_SenseLen,sizeof(DWORD));
45 TRACE("Copying data back to DOS client at 0x%8lx\n",ptrSRB);
46 lpSRB16 = PTR_REAL_TO_LIN(SELECTOROF(ptrSRB),OFFSETOF(ptrSRB));
47 lpSRB16->cmd.SRB_TargStat = lpPRB->SRB_TargStat;
48 lpSRB16->cmd.SRB_HaStat = lpPRB->SRB_HaStat;
49 memcpy(lpSRB16->cmd.CDBByte + lpSRB16->cmd.SRB_CDBLen,lpPRB->SenseArea,lpSRB16->cmd.SRB_SenseLen);
52 if( lpPRB->SRB_Status == SS_SECURITY_VIOLATION )
54 /* SS_SECURITY_VIOLATION isn't defined in DOS ASPI */
55 TRACE("Returning SS_NO_DEVICE for SS_SECURITY_VIOLATION\n");
56 lpPRB->SRB_Status = SS_NO_DEVICE;
59 lpSRB16->cmd.SRB_Status = lpPRB->SRB_Status;
60 TRACE("SRB_Status = 0x%x\n", lpPRB->SRB_Status);
62 HeapFree(GetProcessHeap(),0,lpPRB);
64 if( (lpSRB16->cmd.SRB_Flags & SRB_POSTING) && lpSRB16->cmd.SRB_PostProc )
67 /* The stack should look like this on entry to proc
68 * NOTE: the SDK draws the following diagram bass akwards, use this one
69 * to avoid being confused. Remember, the act of pushing something on
70 * an intel stack involves decreasing the stack pointer by the size of
71 * the data, and then copying the data at the new SP.
73 /***************************
74 * ... Other crap that is already on the stack ...
75 * Segment of SRB Pointer <- SP+6
76 * Offset of SRB Pointer <- SP+4
77 * Segment of return address <- SP+2
78 * Offset of return address <- SP+0
80 /* FIXME: I am about 99% sure what is here is correct,
81 * but this code has never been tested (and probably
82 * won't be either until someone finds a DOS program
83 * that actually uses a Post Routine) */
86 memset(&ctx, 0, sizeof(ctx));
87 ctx.EFlags |= V86_FLAG;
89 /* CS:IP is routine to call */
90 ctx.SegCs = SELECTOROF(lpSRB16->cmd.SRB_PostProc);
91 ctx.Eip = OFFSETOF(lpSRB16->cmd.SRB_PostProc);
92 /* DPMI_CallRMProc will push the pointer to the stack
93 * it is given (in this case &ptrSRB) with length
94 * 2*sizeof(WORD), that is, it copies the the contents
95 * of ptrSRB onto the stack, and decs sp by 2*sizeof(WORD).
96 * After doing that, it pushes the return address
97 * onto the stack (so we don't need to worry about that)
98 * So the stack should be okay for the PostProc
100 if(DPMI_CallRMProc(&ctx, (LPWORD)&ptrSRB, 2, FALSE))
102 TRACE("DPMI_CallRMProc returned nonzero (error) status\n");
104 } /* if ((SRB_Flags&SRB_POSTING) && SRB_PostProc) */
108 DWORD ASPI_SendASPIDOSCommand(DWORD ptrSRB)
110 PSRB_ExecSCSICmd lpPRB;
112 union tagSRB16 * lpSRB16;
114 lpSRB16 = PTR_REAL_TO_LIN(SELECTOROF(ptrSRB),OFFSETOF(ptrSRB));
117 switch( lpSRB16->common.SRB_Cmd )
120 TRACE("SC_HA_INQUIRY\n");
121 /* Format is identical in this case */
122 retval = (*pSendASPI32Command)((LPSRB)lpSRB16);
124 case SC_GET_DEV_TYPE:
125 TRACE("SC_GET_DEV_TYPE\n");
126 /* Format is identical in this case */
127 retval = (*pSendASPI32Command)((LPSRB)lpSRB16);
129 case SC_EXEC_SCSI_CMD:
130 TRACE("SC_EXEC_SCSI_CMD\n");
131 TRACE("Copying data from DOS client at 0x%8lx\n",ptrSRB);
132 lpPRB = HeapAlloc(GetProcessHeap(),0,sizeof(SRB)+lpSRB16->cmd.SRB_SenseLen+sizeof(DWORD));
133 #define srb_dos_to_w32(name) \
134 lpPRB->SRB_##name = lpSRB16->cmd.SRB_##name
137 srb_dos_to_w32(Status);
138 srb_dos_to_w32(HaId);
139 srb_dos_to_w32(BufLen);
140 srb_dos_to_w32(SenseLen);
141 srb_dos_to_w32(CDBLen);
142 srb_dos_to_w32(Target);
144 #undef srb_dos_to_w32
146 /* Allow certain flags to go on to WNASPI32, we also need
147 * to make sure SRB_POSTING is enabled */
148 lpPRB->SRB_Flags = SRB_POSTING | (lpSRB16->cmd.SRB_Flags&(SRB_DIR_IN|SRB_DIR_OUT|SRB_ENABLE_RESIDUAL_COUNT));
150 /* Pointer to data buffer */
151 lpPRB->SRB_BufPointer = PTR_REAL_TO_LIN(SELECTOROF(lpSRB16->cmd.SRB_BufPointer),
152 OFFSETOF(lpSRB16->cmd.SRB_BufPointer));
154 memcpy(&lpPRB->CDBByte[0],&lpSRB16->cmd.CDBByte[0],lpSRB16->cmd.SRB_CDBLen);
156 /* Set post proc to our post proc */
157 lpPRB->SRB_PostProc = &DOSASPI_PostProc;
159 /* Stick the DWORD after all the sense info */
160 memcpy(lpPRB->SenseArea + lpPRB->SRB_SenseLen,&ptrSRB,sizeof(DWORD));
161 retval = (*pSendASPI32Command)((LPSRB)lpPRB);
164 TRACE("SC_ABORT_SRB\n");
165 /* Would need some sort of table of active shit */
168 TRACE("SC_RESET_DEV\n");
171 TRACE("Unkown command code\n");
175 TRACE("Returning %lx\n", retval );
179 void WINAPI ASPI_DOS_func(CONTEXT86 *context)
181 WORD *stack = CTX_SEG_OFF_TO_LIN(context, context->SegSs, context->Esp);
182 DWORD ptrSRB = *(DWORD *)&stack[2];
184 ASPI_SendASPIDOSCommand(ptrSRB);
186 /* simulate a normal RETF sequence as required by DPMI CallRMProcFar */
187 context->Eip = *(stack++);
188 context->SegCs = *(stack++);
189 context->Esp += 2*sizeof(WORD);
193 /**********************************************************************
194 * ASPIHandler (WINEDOS.@)
196 * returns the address of a real mode callback to ASPI_DOS_func()
198 void WINAPI DOSVM_ASPIHandler( CONTEXT86 *context )
200 FARPROC16 *p = (FARPROC16 *)CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
201 TRACE("DOS ASPI opening\n");
202 if ((CX_reg(context) == 4) || (CX_reg(context) == 5))
204 if( hWNASPI32 == INVALID_HANDLE_VALUE )
206 TRACE("Loading WNASPI32\n");
207 hWNASPI32 = LoadLibraryExA("WNASPI32", 0, 0);
210 if( hWNASPI32 == INVALID_HANDLE_VALUE )
212 ERR("Error loading WNASPI32\n");
216 /* Get SendASPI32Command by Ordinal 2 */
217 /* Cast to correct argument/return types */
218 pSendASPI32Command = (DWORD (*)(LPSRB))GetProcAddress(hWNASPI32, (LPBYTE)2);
219 if( !pSendASPI32Command )
221 ERR("Error getting ordinal 2 from WNASPI32\n");
225 *p = DPMI_AllocInternalRMCB(ASPI_DOS_func);
226 TRACE("allocated real mode proc %p\n", *p);
227 SET_AX( context, CX_reg(context) );
232 /* Return some error... General Failure sounds okay */
233 SET_AX( context, ERROR_GEN_FAILURE );