forked from mtalexander/hercules-390
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cardpch.c
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cardpch.c
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/* CARDPCH.C (c) Copyright Roger Bowler, 1999-2010 */
/* ESA/390 Card Punch Device Handler */
/* */
/* Released under "The Q Public License Version 1" */
/* (http://www.hercules-390.org/herclic.html) as modifications to */
/* Hercules. */
/*-------------------------------------------------------------------*/
/* This module contains device handling functions for emulated */
/* System/370 card punch devices. */
/*-------------------------------------------------------------------*/
#include "hstdinc.h"
#include "hercules.h"
#include "devtype.h"
/*-------------------------------------------------------------------*/
/* Internal macro definitions */
/*-------------------------------------------------------------------*/
#define CARD_LENGTH 80
#define HEX40 ((BYTE)0x40)
/*-------------------------------------------------------------------*/
/* Subroutine to write data to the card punch */
/*-------------------------------------------------------------------*/
static void
write_buffer (DEVBLK *dev, BYTE *buf, int len, BYTE *unitstat)
{
int rc; /* Return code */
/* Write data to the output file */
rc = write (dev->fd, buf, len);
/* Equipment check if error writing to output file */
if (rc < len)
{
WRMSG (HHC01200, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, "write()",
(errno == 0 ? "incomplete": strerror(errno)));
dev->sense[0] = SENSE_EC;
*unitstat = CSW_CE | CSW_DE | CSW_UC;
return;
}
} /* end function write_buffer */
/*-------------------------------------------------------------------*/
/* Initialize the device handler */
/*-------------------------------------------------------------------*/
static int cardpch_init_handler (DEVBLK *dev, int argc, char *argv[])
{
int i; /* Array subscript */
/* Close the existing file, if any */
if (dev->fd >= 0)
{
(dev->hnd->close)(dev);
release_lock (&dev->lock);
device_attention (dev, CSW_DE);
obtain_lock (&dev->lock);
}
/* The first argument is the file name */
if ( argc == 0 )
{
WRMSG (HHC01208, "E", SSID_TO_LCSS(dev->ssid), dev->devnum);
return -1;
}
if (strlen(argv[0]) >= sizeof(dev->filename))
{
WRMSG (HHC01201, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, argv[0], (int)sizeof(dev->filename) - 1);
return -1;
}
/* Save the file name in the device block */
hostpath(dev->filename, argv[0], sizeof(dev->filename));
/* Initialize device dependent fields */
dev->fd = -1;
dev->ascii = 0;
dev->crlf = 0;
dev->cardpos = 0;
dev->cardrem = CARD_LENGTH;
dev->notrunc = 0;
dev->stopdev = FALSE;
dev->excps = 0;
if(!sscanf(dev->typname,"%hx",&(dev->devtype)))
dev->devtype = 0x3525;
/* Process the driver arguments */
for (i = 1; i < argc; i++)
{
if (strcasecmp(argv[i], "ascii") == 0)
{
dev->ascii = 1;
continue;
}
if (strcasecmp(argv[i], "ebcdic") == 0)
{
dev->ascii = 0;
continue;
}
if (strcasecmp(argv[i], "crlf") == 0)
{
dev->crlf = 1;
continue;
}
if (strcasecmp(argv[i], "noclear") == 0)
{
dev->notrunc = 1;
continue;
}
WRMSG (HHC01209, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, argv[i], i+1);
return -1;
}
/* Set length of buffer */
dev->bufsize = CARD_LENGTH + 2;
/* Set number of sense bytes */
dev->numsense = 1;
/* Initialize the device identifier bytes */
dev->devid[0] = 0xFF;
dev->devid[1] = 0x28; /* Control unit type is 2821-1 */
dev->devid[2] = 0x21;
dev->devid[3] = 0x01;
dev->devid[4] = dev->devtype >> 8;
dev->devid[5] = dev->devtype & 0xFF;
dev->devid[6] = 0x01;
dev->numdevid = 7;
/* Activate I/O tracing */
// dev->ccwtrace = 1;
return 0;
} /* end function cardpch_init_handler */
/*-------------------------------------------------------------------*/
/* Query the device definition */
/*-------------------------------------------------------------------*/
static void cardpch_query_device (DEVBLK *dev, char **devclass,
int buflen, char *buffer)
{
BEGIN_DEVICE_CLASS_QUERY( "PCH", dev, devclass, buflen, buffer );
snprintf (buffer, buflen-1, "%s%s%s%s%s IO[%" I64_FMT "u]",
dev->filename,
(dev->ascii ? " ascii" : " ebcdic"),
((dev->ascii && dev->crlf) ? " crlf" : ""),
(dev->notrunc ? " notrunc" : ""),
(dev->stopdev ? " (stopped)" : ""),
dev->excps );
} /* end function cardpch_query_device */
/*-------------------------------------------------------------------*/
/* Close the device */
/*-------------------------------------------------------------------*/
static int cardpch_close_device ( DEVBLK *dev )
{
/* Close the device file */
if (dev->fd >= 0)
close (dev->fd);
dev->fd = -1;
dev->stopdev = FALSE;
return 0;
} /* end function cardpch_close_device */
/*-------------------------------------------------------------------*/
/* Execute a Channel Command Word */
/*-------------------------------------------------------------------*/
static void cardpch_execute_ccw (DEVBLK *dev, BYTE code, BYTE flags,
BYTE chained, U16 count, BYTE prevcode, int ccwseq,
BYTE *iobuf, BYTE *more, BYTE *unitstat, U16 *residual)
{
int rc; /* Return code */
int i; /* Loop counter */
int num; /* Number of bytes to move */
int open_flags; /* File open flags */
BYTE c; /* Output character */
UNREFERENCED(prevcode);
UNREFERENCED(ccwseq);
/* Open the device file if necessary */
if (dev->fd < 0 && !IS_CCW_SENSE(code))
{
open_flags = O_WRONLY | O_CREAT /* | O_SYNC */ | O_BINARY;
if (dev->notrunc != 1)
{
open_flags |= O_TRUNC;
}
rc = HOPEN (dev->filename, open_flags,
S_IRUSR | S_IWUSR | S_IRGRP);
if (rc < 0)
{
/* Handle open failure */
WRMSG (HHC01200, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, "open()", strerror(errno));
/* Set unit check with intervention required */
dev->sense[0] = SENSE_IR;
*unitstat = CSW_CE | CSW_DE | CSW_UC;
return;
}
dev->fd = rc;
}
else
{
/* If punch stopped, return intervention required */
if (dev->stopdev && !IS_CCW_SENSE(code))
rc = -1;
else
rc = 0;
}
if (rc < 0)
{
/* Set unit check with intervention required */
dev->sense[0] = SENSE_IR;
*unitstat = CSW_CE | CSW_DE | CSW_UC;
return;
}
/* Process depending on CCW opcode */
switch (code) {
case 0x01:
case 0x41:
case 0x81:
/*---------------------------------------------------------------*/
/* WRITE, FEED, SELECT STACKER */
/*---------------------------------------------------------------*/
/* Start a new record if not data-chained from previous CCW */
if ((chained & CCW_FLAGS_CD) == 0)
{
dev->cardpos = 0;
dev->cardrem = CARD_LENGTH;
} /* end if(!data-chained) */
/* Calculate number of bytes to write and set residual count */
num = (count < dev->cardrem) ? count : dev->cardrem;
*residual = count - num;
/* Copy data from channel buffer to card buffer */
for (i = 0; i < num; i++)
{
c = iobuf[i];
if (dev->ascii)
{
c = guest_to_host(c);
}
dev->buf[dev->cardpos] = c;
dev->cardpos++;
dev->cardrem--;
} /* end for(i) */
/* Perform end of record processing if not data-chaining */
if ((flags & CCW_FLAGS_CD) == 0)
{
if (dev->ascii)
{
/* Truncate trailing blanks from card buffer */
for (i = dev->cardpos; i > 0; i--)
if (dev->buf[i-1] != SPACE) break;
/* Append carriage return and line feed */
if (dev->crlf) dev->buf[i++] = '\r';
dev->buf[i++] = '\n';
}
else
{
/* Pad card image with blanks */
for (i = dev->cardpos; i < CARD_LENGTH; i++)
dev->buf[i] = HEX40;
}
/* Write card image */
write_buffer (dev, dev->buf, i, unitstat);
if (*unitstat != 0) break;
} /* end if(!data-chaining) */
/* Return normal status */
*unitstat = CSW_CE | CSW_DE;
break;
case 0x03:
/*---------------------------------------------------------------*/
/* CONTROL NO-OPERATION */
/*---------------------------------------------------------------*/
*unitstat = CSW_CE | CSW_DE;
break;
case 0x04:
/*---------------------------------------------------------------*/
/* SENSE */
/*---------------------------------------------------------------*/
/* Calculate residual byte count */
num = (count < dev->numsense) ? count : dev->numsense;
*residual = count - num;
if (count < dev->numsense) *more = 1;
/* Copy device sense bytes to channel I/O buffer */
memcpy (iobuf, dev->sense, num);
/* Clear the device sense bytes */
memset (dev->sense, 0, sizeof(dev->sense));
/* Return unit status */
*unitstat = CSW_CE | CSW_DE;
break;
case 0xE4:
/*---------------------------------------------------------------*/
/* SENSE ID */
/*---------------------------------------------------------------*/
/* Calculate residual byte count */
num = (count < dev->numdevid) ? count : dev->numdevid;
*residual = count - num;
if (count < dev->numdevid) *more = 1;
/* Copy device identifier bytes to channel I/O buffer */
memcpy (iobuf, dev->devid, num);
/* Return unit status */
*unitstat = CSW_CE | CSW_DE;
break;
default:
/*---------------------------------------------------------------*/
/* INVALID OPERATION */
/*---------------------------------------------------------------*/
/* Set command reject sense byte, and unit check status */
dev->sense[0] = SENSE_CR;
*unitstat = CSW_CE | CSW_DE | CSW_UC;
} /* end switch(code) */
} /* end function cardpch_execute_ccw */
#if defined(OPTION_DYNAMIC_LOAD)
static
#endif
DEVHND cardpch_device_hndinfo = {
&cardpch_init_handler, /* Device Initialisation */
&cardpch_execute_ccw, /* Device CCW execute */
&cardpch_close_device, /* Device Close */
&cardpch_query_device, /* Device Query */
NULL, /* Device Extended Query */
NULL, /* Device Start channel pgm */
NULL, /* Device End channel pgm */
NULL, /* Device Resume channel pgm */
NULL, /* Device Suspend channel pgm */
NULL, /* Device Halt channel pgm */
NULL, /* Device Read */
NULL, /* Device Write */
NULL, /* Device Query used */
NULL, /* Device Reserve */
NULL, /* Device Release */
NULL, /* Device Attention */
NULL, /* Immediate CCW Codes */
NULL, /* Signal Adapter Input */
NULL, /* Signal Adapter Output */
NULL, /* Signal Adapter Sync */
NULL, /* Signal Adapter Output Mult */
NULL, /* QDIO subsys desc */
NULL, /* QDIO set subchan ind */
NULL, /* Hercules suspend */
NULL /* Hercules resume */
};
/* Libtool static name colision resolution */
/* note : lt_dlopen will look for symbol & modulename_LTX_symbol */
#if !defined(HDL_BUILD_SHARED) && defined(HDL_USE_LIBTOOL)
#define hdl_ddev hdt3525_LTX_hdl_ddev
#define hdl_depc hdt3525_LTX_hdl_depc
#define hdl_reso hdt3525_LTX_hdl_reso
#define hdl_init hdt3525_LTX_hdl_init
#define hdl_fini hdt3525_LTX_hdl_fini
#endif
#if defined(OPTION_DYNAMIC_LOAD)
HDL_DEPENDENCY_SECTION;
{
HDL_DEPENDENCY(HERCULES);
HDL_DEPENDENCY(DEVBLK);
}
END_DEPENDENCY_SECTION
HDL_DEVICE_SECTION;
{
HDL_DEVICE(3525, cardpch_device_hndinfo );
}
END_DEVICE_SECTION
#endif