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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
25 #include "wine/windef16.h"
26 #include "wine/winaspi.h"
27 #include "wine/debug.h"
31 WINE_DEFAULT_DEBUG_CHANNEL(aspi);
33 static HINSTANCE hWNASPI32 = INVALID_HANDLE_VALUE;
34 static DWORD (__cdecl *pSendASPI32Command) (LPSRB) = NULL;
37 DOSASPI_PostProc( SRB_ExecSCSICmd *lpPRB )
43 memcpy(&ptrSRB,lpPRB->SenseArea + lpPRB->SRB_SenseLen,sizeof(DWORD));
44 TRACE("Copying data back to DOS client at 0x%8x\n",ptrSRB);
45 lpSRB16 = PTR_REAL_TO_LIN(SELECTOROF(ptrSRB),OFFSETOF(ptrSRB));
46 lpSRB16->cmd.SRB_TargStat = lpPRB->SRB_TargStat;
47 lpSRB16->cmd.SRB_HaStat = lpPRB->SRB_HaStat;
48 memcpy(lpSRB16->cmd.CDBByte + lpSRB16->cmd.SRB_CDBLen,lpPRB->SenseArea,lpSRB16->cmd.SRB_SenseLen);
51 if( lpPRB->SRB_Status == SS_SECURITY_VIOLATION )
53 /* SS_SECURITY_VIOLATION isn't defined in DOS ASPI */
54 TRACE("Returning SS_NO_DEVICE for SS_SECURITY_VIOLATION\n");
55 lpPRB->SRB_Status = SS_NO_DEVICE;
58 lpSRB16->cmd.SRB_Status = lpPRB->SRB_Status;
59 TRACE("SRB_Status = 0x%x\n", lpPRB->SRB_Status);
61 HeapFree(GetProcessHeap(),0,lpPRB);
63 if( (lpSRB16->cmd.SRB_Flags & SRB_POSTING) && lpSRB16->cmd.SRB_PostProc )
66 /* The stack should look like this on entry to proc
67 * NOTE: the SDK draws the following diagram bass awkwardly, use this one
68 * to avoid being confused. Remember, the act of pushing something on
69 * an intel stack involves decreasing the stack pointer by the size of
70 * the data, and then copying the data at the new SP.
72 /***************************
73 * ... Other crap that is already on the stack ...
74 * Segment of SRB Pointer <- SP+6
75 * Offset of SRB Pointer <- SP+4
76 * Segment of return address <- SP+2
77 * Offset of return address <- SP+0
79 /* FIXME: I am about 99% sure what is here is correct,
80 * but this code has never been tested (and probably
81 * won't be either until someone finds a DOS program
82 * that actually uses a Post Routine) */
85 memset(&ctx, 0, sizeof(ctx));
86 ctx.EFlags |= V86_FLAG;
88 /* CS:IP is routine to call */
89 ctx.SegCs = SELECTOROF(lpSRB16->cmd.SRB_PostProc);
90 ctx.Eip = OFFSETOF(lpSRB16->cmd.SRB_PostProc);
91 /* DPMI_CallRMProc will push the pointer to the stack
92 * it is given (in this case &ptrSRB) with length
93 * 2*sizeof(WORD), that is, it copies the contents
94 * of ptrSRB onto the stack, and decs sp by 2*sizeof(WORD).
95 * After doing that, it pushes the return address
96 * onto the stack (so we don't need to worry about that)
97 * So the stack should be okay for the PostProc
99 if(DPMI_CallRMProc(&ctx, (LPWORD)&ptrSRB, 2, FALSE))
101 TRACE("DPMI_CallRMProc returned nonzero (error) status\n");
103 } /* if ((SRB_Flags&SRB_POSTING) && SRB_PostProc) */
107 DWORD ASPI_SendASPIDOSCommand(DWORD ptrSRB)
109 PSRB_ExecSCSICmd lpPRB;
111 union tagSRB16 * lpSRB16;
113 lpSRB16 = PTR_REAL_TO_LIN(SELECTOROF(ptrSRB),OFFSETOF(ptrSRB));
116 switch( lpSRB16->common.SRB_Cmd )
119 TRACE("SC_HA_INQUIRY\n");
120 /* Format is identical in this case */
121 retval = (*pSendASPI32Command)((LPSRB)lpSRB16);
123 case SC_GET_DEV_TYPE:
124 TRACE("SC_GET_DEV_TYPE\n");
125 /* Format is identical in this case */
126 retval = (*pSendASPI32Command)((LPSRB)lpSRB16);
128 case SC_EXEC_SCSI_CMD:
129 TRACE("SC_EXEC_SCSI_CMD\n");
130 TRACE("Copying data from DOS client at 0x%8x\n",ptrSRB);
131 lpPRB = HeapAlloc(GetProcessHeap(),0,sizeof(SRB)+lpSRB16->cmd.SRB_SenseLen+sizeof(DWORD));
132 #define srb_dos_to_w32(name) \
133 lpPRB->SRB_##name = lpSRB16->cmd.SRB_##name
136 srb_dos_to_w32(Status);
137 srb_dos_to_w32(HaId);
138 srb_dos_to_w32(BufLen);
139 srb_dos_to_w32(SenseLen);
140 srb_dos_to_w32(CDBLen);
141 srb_dos_to_w32(Target);
143 #undef srb_dos_to_w32
145 /* Allow certain flags to go on to WNASPI32, we also need
146 * to make sure SRB_POSTING is enabled */
147 lpPRB->SRB_Flags = SRB_POSTING | (lpSRB16->cmd.SRB_Flags&(SRB_DIR_IN|SRB_DIR_OUT|SRB_ENABLE_RESIDUAL_COUNT));
149 /* Pointer to data buffer */
150 lpPRB->SRB_BufPointer = PTR_REAL_TO_LIN(SELECTOROF(lpSRB16->cmd.SRB_BufPointer),
151 OFFSETOF(lpSRB16->cmd.SRB_BufPointer));
153 memcpy(&lpPRB->CDBByte[0],&lpSRB16->cmd.CDBByte[0],lpSRB16->cmd.SRB_CDBLen);
155 /* Set post proc to our post proc */
156 lpPRB->SRB_PostProc = DOSASPI_PostProc;
158 /* Stick the DWORD after all the sense info */
159 memcpy(lpPRB->SenseArea + lpPRB->SRB_SenseLen,&ptrSRB,sizeof(DWORD));
160 retval = (*pSendASPI32Command)((LPSRB)lpPRB);
163 TRACE("SC_ABORT_SRB\n");
164 /* Would need some sort of table of active shit */
167 TRACE("SC_RESET_DEV\n");
170 TRACE("Unknown command code\n");
174 TRACE("Returning %x\n", retval );
178 static void WINAPI ASPI_DOS_func(CONTEXT *context)
180 WORD *stack = CTX_SEG_OFF_TO_LIN(context, context->SegSs, context->Esp);
181 DWORD ptrSRB = *(DWORD *)&stack[2];
183 ASPI_SendASPIDOSCommand(ptrSRB);
185 /* simulate a normal RETF sequence as required by DPMI CallRMProcFar */
186 context->Eip = *(stack++);
187 context->SegCs = *(stack++);
188 context->Esp += 2*sizeof(WORD);
192 /**********************************************************************
195 * returns the address of a real mode callback to ASPI_DOS_func()
197 void DOSVM_ASPIHandler( CONTEXT *context )
199 FARPROC16 *p = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
200 TRACE("DOS ASPI opening\n");
201 if ((CX_reg(context) == 4) || (CX_reg(context) == 5))
203 if( hWNASPI32 == INVALID_HANDLE_VALUE )
205 TRACE("Loading WNASPI32\n");
206 hWNASPI32 = LoadLibraryExA("WNASPI32", 0, 0);
209 if( hWNASPI32 == INVALID_HANDLE_VALUE )
211 ERR("Error loading WNASPI32\n");
215 /* Get SendASPI32Command by Ordinal 2 */
216 /* Cast to correct argument/return types */
217 pSendASPI32Command = (DWORD (*)(LPSRB))GetProcAddress(hWNASPI32, (LPCSTR)2);
218 if( !pSendASPI32Command )
220 ERR("Error getting ordinal 2 from WNASPI32\n");
224 *p = DPMI_AllocInternalRMCB(ASPI_DOS_func);
225 TRACE("allocated real mode proc %p\n", *p);
226 SET_AX( context, CX_reg(context) );
231 /* Return some error... General Failure sounds okay */
232 SET_AX( context, ERROR_GEN_FAILURE );