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
23 #include "wine/windef16.h"
24 #include "wine/winaspi.h"
25 #include "wine/debug.h"
26 #include "miscemu.h" /* DOSMEM_* */
30 WINE_DEFAULT_DEBUG_CHANNEL(aspi);
32 static HINSTANCE hWNASPI32 = INVALID_HANDLE_VALUE;
33 static DWORD (__cdecl *pSendASPI32Command) (LPSRB) = NULL;
36 DOSASPI_PostProc( SRB_ExecSCSICmd *lpPRB )
42 memcpy(&ptrSRB,lpPRB->SenseArea + lpPRB->SRB_SenseLen,sizeof(DWORD));
43 TRACE("Copying data back to DOS client at 0x%8lx\n",ptrSRB);
44 lpSRB16 = PTR_REAL_TO_LIN(SELECTOROF(ptrSRB),OFFSETOF(ptrSRB));
45 lpSRB16->cmd.SRB_TargStat = lpPRB->SRB_TargStat;
46 lpSRB16->cmd.SRB_HaStat = lpPRB->SRB_HaStat;
47 memcpy(lpSRB16->cmd.CDBByte + lpSRB16->cmd.SRB_CDBLen,lpPRB->SenseArea,lpSRB16->cmd.SRB_SenseLen);
50 if( lpPRB->SRB_Status == SS_SECURITY_VIOLATION )
52 /* SS_SECURITY_VIOLATION isn't defined in DOS ASPI */
53 TRACE("Returning SS_NO_DEVICE for SS_SECURITY_VIOLATION\n");
54 lpPRB->SRB_Status = SS_NO_DEVICE;
57 lpSRB16->cmd.SRB_Status = lpPRB->SRB_Status;
58 TRACE("SRB_Status = 0x%x\n", lpPRB->SRB_Status);
60 HeapFree(GetProcessHeap(),0,lpPRB);
62 if( (lpSRB16->cmd.SRB_Flags & SRB_POSTING) && lpSRB16->cmd.SRB_PostProc )
65 /* The stack should look like this on entry to proc
66 * NOTE: the SDK draws the following diagram bass akwards, use this one
67 * to avoid being confused. Remember, the act of pushing something on
68 * an intel stack involves decreasing the stack pointer by the size of
69 * the data, and then copying the data at the new SP.
71 /***************************
72 * ... Other crap that is already on the stack ...
73 * Segment of SRB Pointer <- SP+6
74 * Offset of SRB Pointer <- SP+4
75 * Segment of return address <- SP+2
76 * Offset of return address <- SP+0
78 /* FIXME: I am about 99% sure what is here is correct,
79 * but this code has never been tested (and probably
80 * won't be either until someone finds a DOS program
81 * that actually uses a Post Routine) */
84 memset(&ctx, 0, sizeof(ctx));
85 /* CS:IP is routine to call */
86 ctx.SegCs = SELECTOROF(lpSRB16->cmd.SRB_PostProc);
87 ctx.Eip = OFFSETOF(lpSRB16->cmd.SRB_PostProc);
88 /* DPMI_CallRMProc will push the pointer to the stack
89 * it is given (in this case &ptrSRB) with length
90 * 2*sizeof(WORD), that is, it copies the the contents
91 * of ptrSRB onto the stack, and decs sp by 2*sizeof(WORD).
92 * After doing that, it pushes the return address
93 * onto the stack (so we don't need to worry about that)
94 * So the stack should be okay for the PostProc
96 if(DPMI_CallRMProc(&ctx, (LPWORD)&ptrSRB, 2, FALSE))
98 TRACE("DPMI_CallRMProc returned nonzero (error) status\n");
100 } /* if ((SRB_Flags&SRB_POSTING) && SRB_PostProc) */
104 DWORD ASPI_SendASPIDOSCommand(DWORD ptrSRB)
106 PSRB_ExecSCSICmd lpPRB;
108 union tagSRB16 * lpSRB16;
110 lpSRB16 = PTR_REAL_TO_LIN(SELECTOROF(ptrSRB),OFFSETOF(ptrSRB));
113 switch( lpSRB16->common.SRB_Cmd )
116 TRACE("SC_HA_INQUIRY\n");
117 /* Format is identical in this case */
118 retval = (*pSendASPI32Command)((LPSRB)lpSRB16);
120 case SC_GET_DEV_TYPE:
121 TRACE("SC_GET_DEV_TYPE\n");
122 /* Format is identical in this case */
123 retval = (*pSendASPI32Command)((LPSRB)lpSRB16);
125 case SC_EXEC_SCSI_CMD:
126 TRACE("SC_EXEC_SCSI_CMD\n");
127 TRACE("Copying data from DOS client at 0x%8lx\n",ptrSRB);
128 lpPRB = HeapAlloc(GetProcessHeap(),0,sizeof(SRB)+lpSRB16->cmd.SRB_SenseLen+sizeof(DWORD));
129 #define srb_dos_to_w32(name) \
130 lpPRB->SRB_##name = lpSRB16->cmd.SRB_##name
133 srb_dos_to_w32(Status);
134 srb_dos_to_w32(HaId);
135 srb_dos_to_w32(BufLen);
136 srb_dos_to_w32(SenseLen);
137 srb_dos_to_w32(CDBLen);
138 srb_dos_to_w32(Target);
140 #undef srb_dos_to_w32
142 /* Allow certain flags to go on to WNASPI32, we also need
143 * to make sure SRB_POSTING is enabled */
144 lpPRB->SRB_Flags = SRB_POSTING | (lpSRB16->cmd.SRB_Flags&(SRB_DIR_IN|SRB_DIR_OUT|SRB_ENABLE_RESIDUAL_COUNT));
146 /* Pointer to data buffer */
147 lpPRB->SRB_BufPointer = PTR_REAL_TO_LIN(SELECTOROF(lpSRB16->cmd.SRB_BufPointer),
148 OFFSETOF(lpSRB16->cmd.SRB_BufPointer));
150 memcpy(&lpPRB->CDBByte[0],&lpSRB16->cmd.CDBByte[0],lpSRB16->cmd.SRB_CDBLen);
152 /* Set post proc to our post proc */
153 lpPRB->SRB_PostProc = &DOSASPI_PostProc;
155 /* Stick the DWORD after all the sense info */
156 memcpy(lpPRB->SenseArea + lpPRB->SRB_SenseLen,&ptrSRB,sizeof(DWORD));
157 retval = (*pSendASPI32Command)((LPSRB)lpPRB);
160 TRACE("SC_ABORT_SRB\n");
161 /* Would need some sort of table of active shit */
164 TRACE("SC_RESET_DEV\n");
167 TRACE("Unkown command code\n");
171 TRACE("Returning %lx\n", retval );
175 void WINAPI ASPI_DOS_func(CONTEXT86 *context)
177 WORD *stack = CTX_SEG_OFF_TO_LIN(context, context->SegSs, context->Esp);
178 DWORD ptrSRB = *(DWORD *)&stack[2];
180 ASPI_SendASPIDOSCommand(ptrSRB);
182 /* simulate a normal RETF sequence as required by DPMI CallRMProcFar */
183 context->Eip = *(stack++);
184 context->SegCs = *(stack++);
185 context->Esp += 2*sizeof(WORD);
189 /**********************************************************************
190 * ASPIHandler (WINEDOS.@)
192 * returns the address of a real mode callback to ASPI_DOS_func()
194 void WINAPI DOSVM_ASPIHandler( CONTEXT86 *context )
196 FARPROC16 *p = (FARPROC16 *)CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx);
197 TRACE("DOS ASPI opening\n");
198 if ((CX_reg(context) == 4) || (CX_reg(context) == 5))
200 if( hWNASPI32 == INVALID_HANDLE_VALUE )
202 TRACE("Loading WNASPI32\n");
203 hWNASPI32 = LoadLibraryExA("WNASPI32", 0, 0);
206 if( hWNASPI32 == INVALID_HANDLE_VALUE )
208 ERR("Error loading WNASPI32\n");
212 /* Get SendASPI32Command by Ordinal 2 */
213 /* Cast to correct argument/return types */
214 pSendASPI32Command = (DWORD (*)(LPSRB))GetProcAddress(hWNASPI32, (LPBYTE)2);
215 if( !pSendASPI32Command )
217 ERR("Error getting ordinal 2 from WNASPI32\n");
221 *p = DPMI_AllocInternalRMCB(ASPI_DOS_func);
222 TRACE("allocated real mode proc %p\n", *p);
223 SET_AX( context, CX_reg(context) );
228 /* Return some error... General Failure sounds okay */
229 SET_AX( context, ERROR_GEN_FAILURE );