home *** CD-ROM | disk | FTP | other *** search
- /*
- * libdi - CD Audio Player Device Interface Library
- *
- * Copyright (C) 1995 Ti Kan
- * E-mail: ti@amb.org
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * This software module contains code that interfaces the CD player
- * application to the SCO Open Desktop operating system. The name
- * "SCO" and "ODT" are used here for identification purposes only.
- * This software and its author are not affiliated with The Santa Cruz
- * Operation, Inc.
- */
- #ifndef LINT
- static char *_os_odt_c_ident_ = "@(#)os_odt.c 5.6 94/12/28";
- #endif
-
- #include "common.d/appenv.h"
- #include "common.d/util.h"
- #include "libdi.d/libdi.h"
- #include "libdi.d/scsipt.h"
-
- #if defined(sco) && defined(DI_SCSIPT) && !defined(DEMO_ONLY)
-
- extern appdata_t app_data;
- extern bool_t scsipt_notrom_error;
- extern FILE *errfp;
-
- STATIC int pthru_fd = -1; /* Passthrough device file desc */
- STATIC req_sense_data_t sense_data; /* Request sense data buffer */
-
-
- /*
- * pthru_send
- * Build SCSI CDB and send command to the device.
- *
- * Args:
- * opcode - SCSI command opcode
- * addr - The "address" portion of the SCSI CDB
- * buf - Pointer to data buffer
- * size - Number of bytes to transfer
- * rsvd - The "reserved" portion of the SCSI CDB
- * length - The "length" portion of the SCSI CDB
- * param - The "param" portion of the SCSI CDB
- * control - The "control" portion of the SCSI CDB
- * rw - Data transfer direction flag (READ_OP or WRITE_OP)
- * prnerr - Whether an error message should be displayed
- * when a command fails
- *
- * Return:
- * TRUE - command completed successfully
- * FALSE - command failed
- */
- bool_t
- pthru_send(
- byte_t opcode,
- word32_t addr,
- byte_t *buf,
- word32_t size,
- byte_t rsvd,
- word32_t length,
- byte_t param,
- byte_t control,
- byte_t rw,
- bool_t prnerr
- )
- {
- struct scsicmd sc;
- union scsi_cdb *cdb;
-
-
- if (pthru_fd < 0 || scsipt_notrom_error)
- return FALSE;
-
- memset(&sense_data, 0, sizeof(sense_data));
- memset(&sc, 0, sizeof(sc));
- cdb = (union scsi_cdb *) sc.cdb;
-
- /* set up SCSI CDB */
- switch (opcode & 0xf0) {
- case 0xa0:
- case 0xe0:
- /* 12-byte commands */
- cdb->twelve.opcode = opcode;
- cdb->twelve.misc = param;
- cdb->twelve.lun = 0;
- CDB12_BLK(&cdb->twelve, bswap32(addr));
- CDB12_LEN(&cdb->twelve, bswap32(length));
- CDB12_RSV(&cdb->twelve, rsvd);
- CDB12_CTL(&cdb->twelve, control);
-
- sc.cdb_len = 12;
- break;
-
- case 0xc0:
- case 0xd0:
- case 0x20:
- case 0x30:
- case 0x40:
- /* 10-byte commands */
- cdb->ten.opcode = opcode;
- cdb->ten.misc = param;
- cdb->ten.lun = 0;
- CDB10_BLK(&cdb->ten, bswap32(addr));
- CDB10_LEN(&cdb->ten, bswap16((word16_t) length));
- CDB10_RSV(&cdb->ten, rsvd);
- CDB10_CTL(&cdb->ten, control);
-
- sc.cdb_len = 10;
- break;
-
- case 0x00:
- case 0x10:
- /* 6-byte commands */
- cdb->six.opcode = opcode;
- cdb->six.misc = param;
- cdb->six.lun = 0;
- CDB6_BLK(&cdb->six, bswap16((word16_t) addr));
- CDB6_LEN(&cdb->six, (byte_t) length);
- CDB6_CTL(&cdb->six, control);
-
- sc.cdb_len = 6;
- break;
-
- default:
- if (app_data.scsierr_msg && prnerr)
- fprintf(errfp, "0x%02x: Unknown SCSI opcode\n",
- opcode);
- return FALSE;
- }
-
- DBGDUMP("SCSI CDB bytes", (byte_t *) sc.cdb, sc.cdb_len);
-
- /* set up scsicmd */
- sc.data_ptr = (faddr_t) buf;
- sc.data_len = size;
- sc.is_write = (rw == WRITE_OP);
-
- /* Send the command down via the "pass-through" interface */
- if (ioctl(pthru_fd, SCSIUSERCMD, &sc) < 0) {
- if (app_data.scsierr_msg && prnerr)
- perror("SCSIUSERCMD ioctl failed");
- return FALSE;
- }
-
- if (sc.host_sts || sc.target_sts) {
- if (app_data.scsierr_msg && prnerr) {
- fprintf(errfp,
- "CD audio: %s %s:\n%s=0x%x %s=0x%x %s=0x%x",
- "SCSI command fault on",
- app_data.device,
- "Opcode",
- opcode,
- "Host_status",
- sc.host_sts,
- "Target_status",
- sc.target_sts);
- }
-
- /* Send Request Sense command */
- cdb->six.opcode = OP_S_RSENSE;
- cdb->six.misc = 0;
- cdb->six.lun = 0;
- CDB6_BLK(&cdb->six, 0);
- CDB6_LEN(&cdb->six, SZ_RSENSE);
- CDB6_CTL(&cdb->six, 0);
- sc.data_ptr = (faddr_t) &sense_data;
- sc.data_len = SZ_RSENSE;
- sc.is_write = FALSE;
- sc.cdb_len = 6;
-
- if (ioctl(pthru_fd, SCSIUSERCMD, &sc) < 0 ||
- sense_data.valid == 0) {
- if (app_data.scsierr_msg && prnerr)
- fprintf(errfp, "\n");
- }
- else if (app_data.scsierr_msg && prnerr) {
- fprintf(errfp, " Key=0x%x Code=0x%x Qual=0x%x\n",
- sense_data.key,
- sense_data.code,
- sense_data.qual);
- }
-
- return FALSE;
- }
- return TRUE;
- }
-
-
- /*
- * pthru_open
- * Open SCSI pass-through device
- *
- * Args:
- * path - device path name string
- *
- * Return:
- * TRUE - open successful
- * FALSE - open failed
- */
- bool_t
- pthru_open(char *path)
- {
- struct stat stbuf;
- char errstr[ERR_BUF_SZ];
-
- /* Check for validity of device node */
- if (stat(path, &stbuf) < 0) {
- sprintf(errstr, app_data.str_staterr, path);
- cd_fatal_popup(app_data.str_fatal, errstr);
- return FALSE;
- }
- if (!S_ISCHR(stbuf.st_mode)) {
- sprintf(errstr, app_data.str_noderr, path);
- cd_fatal_popup(app_data.str_fatal, errstr);
- return FALSE;
- }
-
- if ((pthru_fd = open(path, O_RDONLY)) < 0) {
- DBGPRN(errfp, "Cannot open %s: errno=%d\n", path, errno);
- return FALSE;
- }
-
- return TRUE;
- }
-
-
- /*
- * pthru_close
- * Close SCSI pass-through device
- *
- * Args:
- * Nothing.
- *
- * Return:
- * Nothing.
- */
- void
- pthru_close(void)
- {
- if (pthru_fd >= 0) {
- close(pthru_fd);
- pthru_fd = -1;
- }
- }
-
-
- /*
- * pthru_vers
- * Return OS Interface Module version string
- *
- * Args:
- * Nothing.
- *
- * Return:
- * Module version text string.
- */
- char *
- pthru_vers(void)
- {
- return ("OS Interface module (for SCO ODT)\n");
- }
-
- #endif /* sco DI_SCSIPT DEMO_ONLY */
-
-