433 lines
12 KiB
C
433 lines
12 KiB
C
#include <stdlib.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <ldt.h>
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#include <memory.h>
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#include <unistd.h>
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#include <callback.h>
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#include "windows.h"
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#include "aspi.h"
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#include "options.h"
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#include "heap.h"
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#include "debug.h"
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#include "stddebug.h"
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/* FIXME!
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* 1) Residual byte length reporting not handled
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* 2) Make this code re-entrant for multithreading
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* 3) Only linux supported so far
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*/
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#ifdef linux
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/* This is a duplicate of the sg_header from /usr/src/linux/include/scsi/sg.h
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* kernel 2.0.30
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* This will probably break at some point, but for those who don't have
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* kernels installed, I think this should still work.
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*
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*/
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struct sg_header
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{
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int pack_len; /* length of incoming packet <4096 (including header) */
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int reply_len; /* maximum length <4096 of expected reply */
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int pack_id; /* id number of packet */
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int result; /* 0==ok, otherwise refer to errno codes */
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unsigned int twelve_byte:1; /* Force 12 byte command length for group 6 & 7 commands */
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unsigned int other_flags:31; /* for future use */
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unsigned char sense_buffer[16]; /* used only by reads */
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/* command follows then data for command */
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};
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#define SCSI_OFF sizeof(struct sg_header)
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#endif
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#define ASPI_POSTING(prb) (prb->SRB_Flags & 0x1)
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#define HOST_TO_TARGET(prb) (((prb->SRB_Flags>>3) & 0x3) == 0x2)
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#define TARGET_TO_HOST(prb) (((prb->SRB_Flags>>3) & 0x3) == 0x1)
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#define NO_DATA_TRANSFERED(prb) (((prb->SRB_Flags>>3) & 0x3) == 0x3)
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#define SRB_ENABLE_RESIDUAL_COUNT 0x4
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#define INQUIRY_VENDOR 8
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#define MUSTEK_SCSI_AREA_AND_WINDOWS 0x04
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#define MUSTEK_SCSI_READ_SCANNED_DATA 0x08
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#define MUSTEK_SCSI_GET_IMAGE_STATUS 0x0f
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#define MUSTEK_SCSI_ADF_AND_BACKTRACE 0x10
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#define MUSTEK_SCSI_CCD_DISTANCE 0x11
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#define MUSTEK_SCSI_START_STOP 0x1b
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#define CMD_TEST_UNIT_READY 0x00
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#define CMD_REQUEST_SENSE 0x03
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#define CMD_INQUIRY 0x12
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/* scanner commands - just for debug */
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#define CMD_SCAN_GET_DATA_BUFFER_STATUS 0x34
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#define CMD_SCAN_GET_WINDOW 0x25
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#define CMD_SCAN_OBJECT_POSITION 0x31
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#define CMD_SCAN_READ 0x28
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#define CMD_SCAN_RELEASE_UNIT 0x17
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#define CMD_SCAN_RESERVE_UNIT 0x16
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#define CMD_SCAN_SCAN 0x1b
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#define CMD_SCAN_SEND 0x2a
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#define CMD_SCAN_CHANGE_DEFINITION 0x40
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#define INQURIY_CMDLEN 6
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#define INQURIY_REPLY_LEN 96
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#define INQUIRY_VENDOR 8
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#define SENSE_BUFFER(prb) (&prb->CDBByte[prb->SRB_CDBLen])
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/* Just a container for seeing what devices are open */
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struct ASPI_DEVICE_INFO {
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struct ASPI_DEVICE_INFO * next;
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int fd;
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int hostId;
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int target;
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int lun;
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};
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typedef struct ASPI_DEVICE_INFO ASPI_DEVICE_INFO;
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static ASPI_DEVICE_INFO *ASPI_open_devices = NULL;
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#ifdef linux
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static int
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ASPI_OpenDevice16(SRB_ExecSCSICmd16 *prb)
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{
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int fd;
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char idstr[20];
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char device_str[50];
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ASPI_DEVICE_INFO *curr;
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/* search list of devices to see if we've opened it already.
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* There is not an explicit open/close in ASPI land, so hopefully
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* keeping a device open won't be a problem.
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*/
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for (curr = ASPI_open_devices; curr; curr = curr->next) {
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if (curr->hostId == prb->SRB_HaId &&
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curr->target == prb->SRB_Target &&
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curr->lun == prb->SRB_Lun) {
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return curr->fd;
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}
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}
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/* device wasn't cached, go ahead and open it */
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sprintf(idstr, "scsi c%1dt%1dd%1d", prb->SRB_HaId, prb->SRB_Target, prb->SRB_Lun);
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if (!PROFILE_GetWineIniString(idstr, "Device", "", device_str, sizeof(device_str))) {
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dprintf_aspi(stddeb, "Trying to open unlisted scsi device %s\n", idstr);
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return -1;
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}
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dprintf_aspi(stddeb, "Opening device %s=%s\n", idstr, device_str);
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fd = open(device_str, O_RDWR);
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if (fd == -1) {
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int save_error = errno;
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dprintf_aspi(stddeb, "Error opening device errno=%d\n", save_error);
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return -1;
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}
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/* device is now open */
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curr = HeapAlloc( SystemHeap, 0, sizeof(ASPI_DEVICE_INFO) );
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curr->fd = fd;
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curr->hostId = prb->SRB_HaId;
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curr->target = prb->SRB_Target;
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curr->lun = prb->SRB_Lun;
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/* insert new record at beginning of open device list */
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curr->next = ASPI_open_devices;
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ASPI_open_devices = curr;
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return fd;
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}
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static void
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ASPI_DebugPrintCmd16(SRB_ExecSCSICmd16 *prb)
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{
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BYTE cmd;
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int i;
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BYTE *cdb;
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BYTE *lpBuf;
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lpBuf = PTR_SEG_TO_LIN(prb->SRB_BufPointer);
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switch (prb->CDBByte[0]) {
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case CMD_INQUIRY:
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dprintf_aspi(stddeb, "{\n");
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dprintf_aspi(stddeb, "\tEVPD: %d\n", prb->CDBByte[1] & 1);
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dprintf_aspi(stddeb, "\tLUN: %d\n", (prb->CDBByte[1] & 0xc) >> 1);
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dprintf_aspi(stddeb, "\tPAGE CODE: %d\n", prb->CDBByte[2]);
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dprintf_aspi(stddeb, "\tALLOCATION LENGTH: %d\n", prb->CDBByte[4]);
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dprintf_aspi(stddeb, "\tCONTROL: %d\n", prb->CDBByte[5]);
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dprintf_aspi(stddeb, "}\n");
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break;
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case CMD_SCAN_SCAN:
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dprintf_aspi(stddeb, "Transfer Length: %d\n", prb->CDBByte[4]);
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break;
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}
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dprintf_aspi(stddeb, "Host Adapter: %d\n", prb->SRB_HaId);
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dprintf_aspi(stddeb, "Flags: %d\n", prb->SRB_Flags);
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if (TARGET_TO_HOST(prb)) {
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dprintf_aspi(stddeb, "\tData transfer: Target to host. Length checked.\n");
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}
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else if (HOST_TO_TARGET(prb)) {
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dprintf_aspi(stddeb, "\tData transfer: Host to target. Length checked.\n");
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}
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else if (NO_DATA_TRANSFERED(prb)) {
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dprintf_aspi(stddeb, "\tData transfer: none\n");
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}
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else {
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dprintf_aspi(stddeb, "\tTransfer by scsi cmd. Length not checked\n");
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}
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dprintf_aspi(stddeb, "\tResidual byte length reporting %s\n", prb->SRB_Flags & 0x4 ? "enabled" : "disabled");
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dprintf_aspi(stddeb, "\tLinking %s\n", prb->SRB_Flags & 0x2 ? "enabled" : "disabled");
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dprintf_aspi(stddeb, "\tPosting %s\n", prb->SRB_Flags & 0x1 ? "enabled" : "disabled");
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dprintf_aspi(stddeb, "Target: %d\n", prb->SRB_Target);
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dprintf_aspi(stddeb, "Lun: %d\n", prb->SRB_Lun);
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dprintf_aspi(stddeb, "BufLen: %ld\n", prb->SRB_BufLen);
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dprintf_aspi(stddeb, "SenseLen: %d\n", prb->SRB_SenseLen);
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dprintf_aspi(stddeb, "BufPtr: %lx (%p)\n", prb->SRB_BufPointer, lpBuf);
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dprintf_aspi(stddeb, "LinkPointer %lx\n", prb->SRB_Rsvd1);
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dprintf_aspi(stddeb, "CDB Length: %d\n", prb->SRB_CDBLen);
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dprintf_aspi(stddeb, "POST Proc: %lx\n", (DWORD) prb->SRB_PostProc);
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cdb = &prb->CDBByte[0];
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dprintf_aspi(stddeb, "CDB buffer[");
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cmd = prb->CDBByte[0];
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for (i = 0; i < prb->SRB_CDBLen; i++) {
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if (i != 0)
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dprintf_aspi(stddeb, ",");
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dprintf_aspi(stddeb, "%02x", *cdb++);
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}
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dprintf_aspi(stddeb, "]\n");
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}
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static void
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PrintSenseArea16(SRB_ExecSCSICmd16 *prb)
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{
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int i;
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BYTE *cdb;
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cdb = &prb->CDBByte[0];
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dprintf_aspi(stddeb, "SenseArea[");
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for (i = 0; i < prb->SRB_SenseLen; i++) {
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if (i)
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dprintf_aspi(stddeb, ",");
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dprintf_aspi(stddeb, "%02x", *cdb++);
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}
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dprintf_aspi(stddeb, "]\n");
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}
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static void
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ASPI_DebugPrintResult16(SRB_ExecSCSICmd16 *prb)
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{
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BYTE *lpBuf;
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lpBuf = PTR_SEG_TO_LIN(prb->SRB_BufPointer);
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switch (prb->CDBByte[0]) {
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case CMD_INQUIRY:
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dprintf_aspi(stddeb, "Vendor: %s\n", lpBuf + INQUIRY_VENDOR);
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break;
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case CMD_TEST_UNIT_READY:
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PrintSenseArea16(prb);
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break;
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}
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}
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static WORD
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ASPI_ExecScsiCmd16(SRB_ExecSCSICmd16 *prb, SEGPTR segptr_prb)
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{
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struct sg_header *sg_hd, *sg_reply_hdr;
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int status;
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BYTE *lpBuf;
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int in_len, out_len;
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int error_code = 0;
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int fd;
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ASPI_DebugPrintCmd16(prb);
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fd = ASPI_OpenDevice16(prb);
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if (fd == -1) {
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prb->SRB_Status = SS_ERR;
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return SS_ERR;
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}
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sg_hd = NULL;
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sg_reply_hdr = NULL;
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prb->SRB_Status = SS_PENDING;
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lpBuf = PTR_SEG_TO_LIN(prb->SRB_BufPointer);
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if (!prb->SRB_CDBLen) {
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prb->SRB_Status = SS_ERR;
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return SS_ERR;
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}
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/* build up sg_header + scsi cmd */
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if (HOST_TO_TARGET(prb)) {
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/* send header, command, and then data */
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in_len = SCSI_OFF + prb->SRB_CDBLen + prb->SRB_BufLen;
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sg_hd = (struct sg_header *) malloc(in_len);
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memset(sg_hd, 0, SCSI_OFF);
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memcpy(sg_hd + 1, &prb->CDBByte[0], prb->SRB_CDBLen);
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if (prb->SRB_BufLen) {
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memcpy(((BYTE *) sg_hd) + SCSI_OFF + prb->SRB_CDBLen, lpBuf, prb->SRB_BufLen);
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}
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}
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else {
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/* send header and command - no data */
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in_len = SCSI_OFF + prb->SRB_CDBLen;
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sg_hd = (struct sg_header *) malloc(in_len);
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memset(sg_hd, 0, SCSI_OFF);
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memcpy(sg_hd + 1, &prb->CDBByte[0], prb->SRB_CDBLen);
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}
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if (TARGET_TO_HOST(prb)) {
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out_len = SCSI_OFF + prb->SRB_BufLen;
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sg_reply_hdr = (struct sg_header *) malloc(out_len);
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memset(sg_reply_hdr, 0, SCSI_OFF);
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sg_hd->reply_len = out_len;
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}
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else {
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out_len = SCSI_OFF;
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sg_reply_hdr = (struct sg_header *) malloc(out_len);
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memset(sg_reply_hdr, 0, SCSI_OFF);
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sg_hd->reply_len = out_len;
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}
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status = write(fd, sg_hd, in_len);
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if (status < 0 || status != in_len) {
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int myerror = errno;
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fprintf(stderr, "not enough bytes written to scsi device bytes=%d .. %d\n", in_len, status);
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if (status < 0) {
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if (myerror == ENOMEM) {
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fprintf(stderr, "ASPI: Linux generic scsi driver\n You probably need to re-compile your kernel with a larger SG_BIG_BUFF value (sg.h)\n Suggest 130560\n");
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}
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dprintf_aspi(stddeb, "errno: = %d\n", myerror);
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}
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goto error_exit;
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}
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status = read(fd, sg_reply_hdr, out_len);
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if (status < 0 || status != out_len) {
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dprintf_aspi(stddeb, "not enough bytes read from scsi device%d\n", status);
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goto error_exit;
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}
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if (sg_reply_hdr->result != 0) {
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error_code = sg_reply_hdr->result;
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dprintf_aspi(stddeb, "reply header error (%d)\n", sg_reply_hdr->result);
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goto error_exit;
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}
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if (TARGET_TO_HOST(prb) && prb->SRB_BufLen) {
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memcpy(lpBuf, sg_reply_hdr + 1, prb->SRB_BufLen);
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}
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/* copy in sense buffer to amount that is available in client */
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if (prb->SRB_SenseLen) {
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int sense_len = prb->SRB_SenseLen;
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if (prb->SRB_SenseLen > 16)
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sense_len = 16;
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memcpy(SENSE_BUFFER(prb), &sg_reply_hdr->sense_buffer[0], sense_len);
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}
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prb->SRB_Status = SS_COMP;
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prb->SRB_HaStat = HASTAT_OK;
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prb->SRB_TargStat = STATUS_GOOD;
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/* now do posting */
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if (ASPI_POSTING(prb) && prb->SRB_PostProc) {
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dprintf_aspi(stddeb, "ASPI: Post Routine (%lx) called\n", (DWORD) prb->SRB_PostProc);
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Callbacks->CallASPIPostProc(prb->SRB_PostProc, segptr_prb);
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}
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free(sg_reply_hdr);
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free(sg_hd);
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ASPI_DebugPrintResult16(prb);
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return SS_COMP;
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error_exit:
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if (error_code == EBUSY) {
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prb->SRB_Status = SS_ASPI_IS_BUSY;
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dprintf_aspi(stddeb, "ASPI: Device busy\n");
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}
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else {
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dprintf_aspi(stddeb, "ASPI_GenericHandleScsiCmd failed\n");
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prb->SRB_Status = SS_ERR;
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}
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/* I'm not sure exactly error codes work here
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* We probably should set prb->SRB_TargStat, SRB_HaStat ?
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*/
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dprintf_aspi(stddeb, "ASPI_GenericHandleScsiCmd: error_exit\n");
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free(sg_reply_hdr);
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free(sg_hd);
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return prb->SRB_Status;
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}
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#endif
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/***********************************************************************
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* GetASPISupportInfo16 (WINASPI.1)
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*/
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WORD
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GetASPISupportInfo16()
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{
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#ifdef linux
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dprintf_aspi(stddeb, "GETASPISupportInfo\n");
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/* high byte SS_COMP - low byte number of host adapters.
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* FIXME!!! The number of host adapters is incorrect.
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* I'm not sure how to determine this under linux etc.
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*/
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return ((SS_COMP << 8) | 0x1);
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#else
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return ((SS_COMP << 8) | 0x0);
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#endif
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}
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/***********************************************************************
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* SendASPICommand16 (WINASPI.2)
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*/
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WORD
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SendASPICommand16(SEGPTR segptr_srb)
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{
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#ifdef linux
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LPSRB16 lpSRB = PTR_SEG_TO_LIN(segptr_srb);
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switch (lpSRB->common.SRB_cmd) {
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case SC_HA_INQUIRY:
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dprintf_aspi(stddeb, "ASPI: Not implemented SC_HA_INQUIRY\n");
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break;
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case SC_GET_DEV_TYPE:
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dprintf_aspi(stddeb, "ASPI: Not implemented SC_GET_DEV_TYPE\n");
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break;
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case SC_EXEC_SCSI_CMD:
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return ASPI_ExecScsiCmd16(&lpSRB->cmd, segptr_srb);
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break;
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case SC_RESET_DEV:
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dprintf_aspi(stddeb, "ASPI: Not implemented SC_RESET_DEV\n");
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break;
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default:
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dprintf_aspi(stddeb, "ASPI: Unknown command %d\n", lpSRB->common.SRB_cmd);
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}
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return SS_INVALID_SRB;
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#else
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return SS_INVALID_SRB;
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#endif
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}
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