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channel.c
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channel.c
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/* CHANNEL.C (C) Copyright Roger Bowler, 1999-2012 */
/* (C) Copyright Jan Jaeger, 1999-2012 */
/* (C) Copyright Mark L. Gaubatz, 2010, 2013 */
/* (C) and others 2013-2023 */
/* ESA/390 Channel Emulator */
/* */
/* Released under "The Q Public License Version 1" */
/* (http:https://www.hercules-390.org/herclic.html) as modifications to */
/* Hercules. */
/* z/Architecture support - */
/* (C) Copyright Jan Jaeger, 1999-2012 */
/* Rewrite of channel code and associated structures - */
/* (C) Copyright Mark L. Gaubatz, 2010, 2013 */
/*-------------------------------------------------------------------*/
/* This module contains the channel subsystem functions for the */
/* Hercules S/370 and ESA/390 emulator. */
/*-------------------------------------------------------------------*/
/*-------------------------------------------------------------------*/
/* Additional credits: */
/* Measurement block support by Jan Jaeger */
/* Fix program check on NOP due to addressing - Jan Jaeger */
/* Fix program check on TIC as first ccw on RSCH - Jan Jaeger */
/* Fix PCI intermediate status flags - Jan Jaeger */
/* 64-bit IDAW support - Roger Bowler v209 */
/* Incorrect-length-indication-suppression - Jan Jaeger */
/* Read backward support contributed by Hackules 13jun2002 */
/* Read backward fixes contributed by Jay Jaeger 16sep2003 */
/* MIDAW support - Roger Bowler 03aug2005 */
/*-------------------------------------------------------------------*/
#include "hstdinc.h"
DISABLE_GCC_UNUSED_FUNCTION_WARNING;
#define _CHANNEL_C_
#define _HENGINE_DLL_
#include "hercules.h"
#include "devtype.h"
#include "opcode.h"
#include "chsc.h"
#include "inline.h"
#ifdef FEATURE_S370_CHANNEL
#include "commadpt.h"
#endif /*FEATURE_S370_CHANNEL*/
DISABLE_GCC_UNUSED_SET_WARNING;
/*-------------------------------------------------------------------*/
/* Debug Switches */
/*-------------------------------------------------------------------*/
#ifndef CHANNEL_DEBUG_SWITCHES
#define CHANNEL_DEBUG_SWITCHES
#define DEBUG_SCSW 0
#define DEBUG_PREFETCH 0
#define DEBUG_DUMP 0
#endif
/*-------------------------------------------------------------------*/
/* CCW Tracing helper macros */
/*-------------------------------------------------------------------*/
#ifndef CCW_TRACING_ACTIVE
#define CCW_TRACING_ACTIVE( dev, tracethis ) ((dev)->ccwtrace \
|| ( tracethis ))
#endif
#ifndef SKIP_CH9UC
#define SKIP_CH9UC( dev, chanstat, unitstat ) \
\
(1 \
&& !(dev)->ccwtrace \
&& !CPU_STEPPING_OR_TRACING_ALL \
&& sysblk.noch9oflow \
&& is_ch9oflow( dev, chanstat, unitstat ) \
)
#endif
/*-------------------------------------------------------------------*/
/* helper function to check if printer channel-9 overflow unit check */
/*-------------------------------------------------------------------*/
#ifndef IS_CH9OFLOW
#define IS_CH9OFLOW
static BYTE is_ch9oflow( DEVBLK* dev, BYTE chanstat, BYTE unitstat )
{
static const BYTE unitck = (CSW_CE | CSW_DE | CSW_UC);
if (1
&& 0 == chanstat
&& unitck == unitstat
&& SENSE_CH9 == dev->sense[0]
&& 0 == dev->sense[1]
&& dev->hnd->query
)
{
char* devclass = NULL;
dev->hnd->query( NULL, &devclass, 0, NULL );
if (strcmp( devclass, "PRT" ) == 0)
return TRUE;
}
return FALSE;
}
#endif // IS_CH9OFLOW
/*-------------------------------------------------------------------*/
/* Internal function definitions */
/*-------------------------------------------------------------------*/
void call_execute_ccw_chain (int arch_mode, void* pDevBlk);
DLL_EXPORT void* device_thread (void *arg);
static int schedule_ioq (const REGS* regs, DEVBLK* dev);
static INLINE void subchannel_interrupt_queue_cleanup (DEVBLK*);
int test_subchan_locked (REGS*, DEVBLK*, IRB*, IOINT**, SCSW**);
#ifndef CHANNEL_INLINES
#define CHANNEL_INLINES
static INLINE U8 IS_CCW_IMMEDIATE( const DEVBLK* dev, const BYTE code )
{
return
(0
|| (dev->hnd->immed && dev->hnd->immed[code])
|| (dev->immed && dev->immed[code])
|| IS_CCW_NOP( dev->code )
);
}
static INLINE void
set_subchannel_busy(DEVBLK* dev)
{
dev->busy = 1;
dev->scsw.flag3 |= SCSW3_AC_SCHAC | SCSW3_SC_INTER;
}
static INLINE void
set_device_busy(DEVBLK* dev)
{
set_subchannel_busy(dev);
dev->scsw.flag3 |= SCSW3_AC_DEVAC;
}
static INLINE void
clear_subchannel_busy_scsw(SCSW* scsw)
{
scsw->flag3 &= ~(SCSW3_AC_SCHAC |
SCSW3_AC_DEVAC |
SCSW3_SC_INTER);
}
static INLINE void
clear_subchannel_busy(DEVBLK* dev)
{
clear_subchannel_busy_scsw(&dev->scsw);
dev->startpending = 0;
dev->busy = 0;
}
static INLINE void
clear_device_busy_scsw(SCSW* scsw)
{
scsw->flag3 &= ~SCSW3_AC_DEVAC;
}
static INLINE void
clear_device_busy(DEVBLK* dev)
{
clear_device_busy_scsw(&dev->scsw);
}
#endif /*CHANNEL_INLINES*/
/*-------------------------------------------------------------------*/
/* Internal I/O Buffer Structure and Inline Support Routines */
/*-------------------------------------------------------------------*/
#ifndef IOBUF_STRUCT
#define IOBUF_STRUCT
CASSERT( IOBUF_HDRSIZE == ROUND_UP( IOBUF_HDRSIZE, IOBUF_ALIGN ), IOBUF_HDRSIZE );
CASSERT( IOBUF_MINSIZE == ROUND_UP( IOBUF_MINSIZE, IOBUF_ALIGN ), IOBUF_MINSIZE );
CASSERT( IOBUF_INCREASE == ROUND_UP( IOBUF_INCREASE, IOBUF_ALIGN ), IOBUF_INCREASE );
struct IOBUF
{
/* Every IOBUF struct starts with a 4K header the first few
* bytes of which hold the IOBUF control variables defining
* the size of the actual usable channel I/O buffer portion
* of the IOBUF structure, a pointer to the actual channel
* I/O buffer itself, and a second pointer pointing to the
* last logical byte of the channel I/O buffer. The actual
* channel I/O buffer immediately follows the IOBUF header.
*
* Every IOBUF is always aligned on a 4K boundary thus en-
* suring the actual channel I/O buffer itself is as well.
*
* The size of every IOBUF will always be a multiple of 4K.
*
* When an IOBUF is reallocated larger, if the old size is
* larger than IOBUF_MINSIZE bytes, it means the IOBUF was
* malloc'ed on the heap and thus the old IOBUF should then
* be freed. Otherwise if the old size is less or equal to
* IOBUF_MINSIZE, it means the IOBUF was allocated on the
* stack and thus free should not be done.
*/
union
{
struct
{
u_int size; /* Channel I/O buffer size */
BYTE *start; /* Start of data address */
BYTE *end; /* Last byte address */
/* Note: Remaining space from 4K page is reserved
* for debugging and future use. No mapping
* of the space is presently done.
*/
};
BYTE pad[IOBUF_HDRSIZE]; /* Pad to alignment boundary */
};
BYTE data[IOBUF_MINSIZE]; /* Channel I/O buffer itself */
};
typedef struct IOBUF IOBUF;
static INLINE void
iobuf_initialize (IOBUF *iobuf, const u_int size)
{
iobuf->size = size;
iobuf->start = (BYTE *)iobuf->data;
iobuf->end = (BYTE *)iobuf->start + (size - 1);
}
static INLINE IOBUF *
iobuf_create (u_int size)
{
IOBUF *iobuf;
size = ROUND_UP( size, IOBUF_INCREASE );
iobuf = (IOBUF*)malloc_aligned(offsetof(IOBUF,data) + size, IOBUF_ALIGN);
if (iobuf != NULL)
iobuf_initialize(iobuf, size);
return iobuf;
}
static INLINE u_int
iobuf_validate (IOBUF *iobuf)
{
return
((iobuf == NULL ||
iobuf->size < IOBUF_MINSIZE ||
iobuf->start != (BYTE *)iobuf->data ||
iobuf->end != (BYTE *)iobuf->start + (iobuf->size - 1 )) ?
0 : 1);
}
static INLINE void
iobuf_destroy (IOBUF *iobuf)
{
/* PROGRAMMING NOTE: The tests below are purposely neither macros
* or inlined routines. This is to permit breakpoints during
* development and testing. In the future, instead of aborting
* and/or crashing, the code will branch (or longjmp) to a point in
* channel code where the current CCW chain will be terminated,
* cleanup performed, and a Channel Check, and/or a Machine Check,
* will be returned.
*/
if (iobuf == NULL)
return;
if (!iobuf_validate(iobuf))
CRASH();
if (iobuf->size > IOBUF_MINSIZE)
free_aligned(iobuf);
}
static INLINE IOBUF*
iobuf_reallocate (IOBUF *iobuf, const u_int size)
{
IOBUF *iobufnew;
/* PROGRAMMING NOTE: The tests below are purposely neither macros
* or inlined routines. This is to permit breakpoints during
* development and testing. In the future, instead of aborting
* and/or crashing, the code will branch (or longjmp) to a point in
* channel code where the current CCW chain will be terminated,
* cleanup performed, and a Channel Check, and/or a Machine Check,
* will be returned.
*/
if (iobuf == NULL)
return NULL;
if (!iobuf_validate(iobuf))
CRASH();
iobufnew = iobuf_create(size);
if (iobufnew == NULL)
return NULL;
memcpy(iobufnew->start, iobuf->start, MIN(iobuf->size, size));
if (iobuf->size > IOBUF_MINSIZE)
free_aligned(iobuf);
return iobufnew;
}
#endif /* IOBUF_STRUCT */
/*--------------------------------------------------------------------*/
/* CCW prefetch data structure */
/*--------------------------------------------------------------------*/
#ifndef PREFETCH_STRUCT
#define PREFETCH_STRUCT
/* Define 256 entries in the prefetch table */
#define PF_SIZE 256
struct PREFETCH /* Prefetch data structure */
{
u_int seq; /* Counter */
u_int pos; /* Highest valid position */
U32 reqcount; /* Requested count */
U8 prevcode; /* Previous CCW opcode */
U8 opcode; /* CCW opcode */
U16 reserved;
BYTE chanstat[PF_SIZE]; /* Channel status */
U32 ccwaddr[PF_SIZE]; /* CCW address (SCSW CCW) */
U32 datalen[PF_SIZE]; /* Count (length) */
RADR dataaddr[PF_SIZE]; /* Address */
U8 ccwflags[PF_SIZE]; /* CCW flags */
U16 ccwcount[PF_SIZE]; /* Count (length) */
U32 idawaddr[PF_SIZE]; /* IDAW address */
U8 idawtype[PF_SIZE]; /* IDAW type */
U8 idawflag[PF_SIZE]; /* IDAW flags */
};
typedef struct PREFETCH PREFETCH;
#endif /* PREFETCH_STRUCT */
/*--------------------------------------------------------------------*/
/* IODELAY - kludge */
/*--------------------------------------------------------------------*/
#ifdef OPTION_IODELAY_KLUDGE
#define IODELAY(_dev) \
do { \
if (sysblk.iodelay > 0 && (_dev)->devchar[10] == 0x20) \
USLEEP(sysblk.iodelay); \
} while(0)
#else
#define IODELAY(_dev)
#endif
/*--------------------------------------------------------------------*/
/* CHADDRCHK - validate guest channel i/o subsystem address */
/*--------------------------------------------------------------------*/
#undef CHADDRCHK
#if defined(FEATURE_ADDRESS_LIMIT_CHECKING)
#define CHADDRCHK(_addr,_dev) \
( ((_addr) > (_dev)->mainlim) \
|| (((_dev)->orb.flag5 & ORB5_A) \
&& ((((_dev)->pmcw.flag5 & PMCW5_LM_LOW) \
&& ((_addr) < sysblk.addrlimval)) \
|| (((_dev)->pmcw.flag5 & PMCW5_LM_HIGH) \
&& ((_addr) >= sysblk.addrlimval)) ) ))
#else /* !defined(FEATURE_ADDRESS_LIMIT_CHECKING) */
#define CHADDRCHK(_addr,_dev) \
((_addr) > (_dev)->mainlim)
#endif /* defined(FEATURE_ADDRESS_LIMIT_CHECKING) */
/*--------------------------------------------------------------------*/
/* C H A N N E L P R O C E S S I N G */
/*--------------------------------------------------------------------*/
#ifndef _CHANNEL_C
#define _CHANNEL_C
static INLINE U64
BytesToEndOfStorage( const RADR addr, const DEVBLK* dev )
{
if (dev) return ((addr <= dev->mainlim) ? (dev->mainlim+1 - addr) : 0);
else return ((addr < sysblk.mainsize) ? (sysblk.mainsize - addr) : 0);
}
#define CAPPED_BUFFLEN(_addr,_len,_dev) \
((u_int)MIN((U64)(_len),(U64)BytesToEndOfStorage((_addr),(_dev))))
/*--------------------------------------------------------------------*/
/* Inline routines for Conditions and Indications Cleared at the */
/* Subchannel by TEST SUBCHANNEL; use of the routines keep the */
/* logic flow through the table of conditions clean. */
/* */
/* SA22-7832-09, Figure 14-2, Conditions and Indications Cleared at */
/* the Subchannel by TEST SUBCHANNEL, p. 14-21. */
/* */
/*--------------------------------------------------------------------*/
static INLINE void
scsw_clear_n_C (SCSW* scsw)
{
scsw->flag1 &= ~SCSW1_N;
}
static INLINE void
scsw_clear_q_C (SCSW* scsw)
{
scsw->flag2 &= ~SCSW2_Q;
}
static INLINE void
scsw_clear_fc_C (SCSW* scsw)
{
scsw->flag2 &= ~SCSW2_FC;
}
static INLINE void
scsw_clear_fc_Nc (SCSW* scsw)
{
if (scsw->flag2 & SCSW2_FC_HALT &&
scsw->flag3 & SCSW3_AC_SUSP)
scsw_clear_fc_C(scsw);
}
static INLINE void
scsw_clear_ac_Cp (SCSW* scsw)
{
scsw->flag2 &= ~(SCSW2_AC_RESUM |
SCSW2_AC_START |
SCSW2_AC_HALT |
SCSW2_AC_CLEAR);
scsw->flag3 &= ~SCSW3_AC_SUSP;
}
static INLINE void
scsw_clear_ac_Nr (SCSW* scsw)
{
if (scsw->flag2 & SCSW2_FC_START &&
scsw->flag3 & SCSW3_AC_SUSP)
{
if (scsw->flag2 & SCSW2_FC_HALT)
scsw_clear_ac_Cp(scsw);
else
{
scsw->flag2 &= ~SCSW2_AC_RESUM;
scsw_clear_n_C(scsw);
}
}
}
static INLINE void
scsw_clear_sc_Cs (SCSW* scsw)
{
scsw->flag3 &= ~(SCSW3_SC_ALERT |
SCSW3_SC_INTER |
SCSW3_SC_PRI |
SCSW3_SC_SEC |
SCSW3_SC_PEND);
}
/*--------------------------------------------------------------------*/
/* AIPSX (dev) */
/* */
/* Generates the AIPSX indication for Figure 16-5, the Deferred- */
/* Condition-Code Meaning for Status-Pending Subchannel, Figure */
/* 16-5. */
/*--------------------------------------------------------------------*/
static INLINE U8
AIPSX (const SCSW* scsw)
{
U8 result = (scsw->flag1 & SCSW1_A) /* >> 4 << 4 */
| ((scsw->flag1 & SCSW1_I) >> 2 /* >> 5 << 3 */
| (scsw->flag0 & SCSW0_S) >> 2) /* >> 3 << 1 */
| ((scsw->flag1 & SCSW1_P) >> 4) /* >> 6 << 2 */
| (scsw->flag3 & SCSW3_SC_PEND); /* >> 0 << 0 */
return (result);
}
/*--------------------------------------------------------------------*/
/* Queue I/O interrupt and update status (locked) */
/* */
/* Locks Held on Entry */
/* sysblk.intlock */
/* dev->lock */
/* Locks Held on Return */
/* sysblk.intlock */
/* dev->lock */
/* Locks Used */
/* sysblk.iointqlk */
/*--------------------------------------------------------------------*/
static INLINE void
queue_io_interrupt_and_update_status_locked(DEVBLK* dev, int clrbsy)
{
OBTAIN_IOINTQLK();
{
/* Ensure the interrupt is queued/dequeued per pending flag */
if (dev->scsw.flag3 & SCSW3_SC_PEND)
QUEUE_IO_INTERRUPT_QLOCKED( &dev->ioint, clrbsy );
else
DEQUEUE_IO_INTERRUPT_QLOCKED( &dev->ioint );
/* Perform cleanup for DEVBLK flags being deprecated */
subchannel_interrupt_queue_cleanup( dev );
/* Update interrupts */
UPDATE_IC_IOPENDING_QLOCKED();
}
RELEASE_IOINTQLK();
#if defined( OPTION_SHARED_DEVICES )
/* Wake up any waiters if the device isn't active or reserved */
if (!(dev->scsw.flag3 & (SCSW3_AC_SCHAC | SCSW3_AC_DEVAC)) &&
!dev->reserved)
{
dev->shioactive = DEV_SYS_NONE;
if (dev->shiowaiters)
signal_condition (&dev->shiocond);
}
#endif // defined( OPTION_SHARED_DEVICES )
}
/*--------------------------------------------------------------------*/
/* Queue I/O interrupt and update status */
/* */
/* Locks Held on Entry */
/* None */
/* Locks Held on Return */
/* None */
/* Locks Used */
/* dev->lock */
/* sysblk.intlock */
/* sysblk.iointqlk */
/*--------------------------------------------------------------------*/
static INLINE void
queue_io_interrupt_and_update_status(DEVBLK* dev, int clrbsy)
{
if (likely(dev->scsw.flag3 & SCSW3_SC_PEND))
{
OBTAIN_INTLOCK( NULL );
{
OBTAIN_DEVLOCK( dev );
{
queue_io_interrupt_and_update_status_locked( dev, clrbsy );
}
RELEASE_DEVLOCK( dev );
}
RELEASE_INTLOCK( NULL );
}
#if defined( OPTION_SHARED_DEVICES )
else /* No interrupt pending */
{
/* Wake up any waiters if the device isn't active or reserved */
if (!(dev->scsw.flag3 & (SCSW3_AC_SCHAC | SCSW3_AC_DEVAC)) &&
!dev->reserved)
{
OBTAIN_DEVLOCK( dev );
{
dev->shioactive = DEV_SYS_NONE;
if (dev->shiowaiters)
signal_condition (&dev->shiocond);
}
RELEASE_DEVLOCK( dev );
}
}
#endif // defined( OPTION_SHARED_DEVICES )
}
/*-------------------------------------------------------------------*/
/* Copy memory backwards for READ BACKWARDS */
/* */
/* Note: Routines exist that use READ BACKWARDS and PCI, processing */
/* data as copied. Consequently, memory copying must be done */
/* backwards to ensure that these routines have little chance */
/* of failure. */
/* */
/*-------------------------------------------------------------------*/
static INLINE void
memcpy_backwards ( BYTE *to, BYTE *from, int length )
{
if (length)
{
for (to += length, from += length; length; --length)
*(--to) = *(--from);
}
}
/*-------------------------------------------------------------------*/
/* FORMAT DATA */
/*-------------------------------------------------------------------*/
#if !defined(format_data)
# define format_data(_buffer,_buflen,_data,_datalen) \
_format_data((BYTE *)(_buffer),(u_int)(_buflen), \
(BYTE *)(_data),(u_int)(_datalen))
#endif
static INLINE void
_format_data ( BYTE *buffer, const u_int buflen,
const BYTE *a, const u_int len )
{
u_int i, k; /* Array subscripts */
int j;
k = MIN(len, 16);
if (k)
{
j = snprintf((char *)buffer, buflen,
"%2.2X%2.2X%2.2X%2.2X %2.2X%2.2X%2.2X%2.2X "
"%2.2X%2.2X%2.2X%2.2X %2.2X%2.2X%2.2X%2.2X",
a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7],
a[8], a[9], a[10], a[11], a[12], a[13], a[14], a[15]);
if (j < 0)
*buffer = 0;
else
{
/* Blank out unused data */
if (k != 16)
{
i = (k << 1) + (k >> 2);
memset(buffer + i, ' ', j - i);
}
/* If space is available, add translation */
if ((u_int)j < buflen)
{
/* Insert blank separator */
buffer[j++] = ' ';
/* If space still available, complete translation */
if ((u_int)j < buflen)
{
/* Adjust data display size if necessary */
if ((j + k) > buflen)
k = buflen - j;
/* Append translation */
prt_guest_to_host(a, buffer + j, k);
}
}
}
}
else
*buffer = 0;
} /* end function format_data */
/***************************************************************/
/* SPECIAL HANDLING FOR E7 Prefix CCW TO TRACE ENTIRE 64 BYTES */
/***************************************************************/
#if !defined(e7_format_data)
# define e7_format_data(_buffer,_buflen,_data,_datalen) \
_e7_format_data((BYTE *)(_buffer),(u_int)(_buflen), \
(BYTE *)(_data),(u_int)(_datalen))
#endif
static INLINE void
_e7_format_data ( BYTE *buffer, const u_int buflen,
const BYTE *a, const u_int len )
{
u_int i, k; /* Array subscripts */
int j;
k = MIN(len, 64);
if (k)
{
j = snprintf((char *)buffer, buflen,
"%2.2X%2.2X%2.2X%2.2X %2.2X%2.2X%2.2X%2.2X "
"%2.2X%2.2X%2.2X%2.2X %2.2X%2.2X%2.2X%2.2X "
"%2.2X%2.2X%2.2X%2.2X %2.2X%2.2X%2.2X%2.2X "
"%2.2X%2.2X%2.2X%2.2X %2.2X%2.2X%2.2X%2.2X "
"%2.2X%2.2X%2.2X%2.2X %2.2X%2.2X%2.2X%2.2X "
"%2.2X%2.2X%2.2X%2.2X %2.2X%2.2X%2.2X%2.2X "
"%2.2X%2.2X%2.2X%2.2X %2.2X%2.2X%2.2X%2.2X "
"%2.2X%2.2X%2.2X%2.2X %2.2X%2.2X%2.2X%2.2X"
,a[ 0], a[ 1], a[ 2], a[ 3], a[ 4], a[ 5], a[ 6], a[ 7]
,a[ 8], a[ 9], a[10], a[11], a[12], a[13], a[14], a[15]
,a[16], a[17], a[18], a[19], a[20], a[21], a[22], a[23]
,a[24], a[25], a[26], a[26], a[28], a[29], a[30], a[31]
,a[32], a[33], a[34], a[35], a[36], a[37], a[38], a[39]
,a[40], a[41], a[42], a[43], a[44], a[45], a[46], a[47]
,a[48], a[49], a[50], a[51], a[52], a[53], a[54], a[55]
,a[56], a[57], a[58], a[59], a[60], a[61], a[62], a[63]
);
if (j < 0)
*buffer = 0;
else
{
/* Blank out unused data */
if (k != 64)
{
i = (k << 1) + (k >> 2);
memset(buffer + i, ' ', j - i);
}
/* If space is available, add translation */
if ((u_int)j < buflen)
{
/* Insert blank separator */
buffer[j++] = ' ';
/* If space still available, complete translation */
if ((u_int)j < buflen)
{
/* Adjust data display size if necessary */
if ((j + k) > buflen)
k = buflen - j;
/* Append translation */
prt_guest_to_host(a, buffer + j, k);
}
}
}
}
else
*buffer = 0;
} /* end function format_data */
/*-------------------------------------------------------------------*/
/* FORMAT I/O BUFFER DATA */
/*-------------------------------------------------------------------*/
static INLINE void
format_iobuf_data ( const RADR addr, BYTE *dest, const DEVBLK *dev,
const u_int len )
{
u_int k; /* Array subscripts */
BYTE workarea[17]; /* Character string work */
k = MIN(sizeof(workarea)-1,CAPPED_BUFFLEN(addr,len,dev));
if (k)
{
memcpy(workarea, dev->mainstor + addr, k);
memcpy(dest, "=>", 2);
format_data(dest + 2, 52, workarea, k);
}
else
*dest = 0;
} /* end function format_iobuf_data */
/***************************************************************/
/* SPECIAL HANDLING FOR E7 Prefix CCW TO TRACE ENTIRE 64 BYTES */
/***************************************************************/
static INLINE void
e7_format_iobuf_data ( const RADR addr, BYTE *dest, const DEVBLK *dev,
const u_int len )
{
u_int k; /* Array subscripts */
BYTE workarea[4*17]; /* Character string work */
k = MIN(sizeof(workarea)-1,CAPPED_BUFFLEN(addr,len,dev));
if (k)
{
memcpy(workarea, dev->mainstor + addr, k);
memcpy(dest, "=>", 2);
e7_format_data(dest + 2, (4*64)-2-1, workarea, k);
}
else
*dest = 0;
} /* end function format_iobuf_data */
#if !DEBUG_DUMP
#define DUMP( _desc, _addr, _len )
#define DUMP_STORAGE( _desc, _addr, _len )
#else
/*-------------------------------------------------------------------*/
/* Dump data block */
/*-------------------------------------------------------------------*/
#define DUMP( _desc, _addr, _len ) \
_dump( (char*)(_desc), (BYTE*)(_addr), (u_int)(_len), \
__FILE__, __LINE__, __FUNCTION__ )
static void _dump ( const char *description, BYTE *addr, const u_int len,
const char* file, int line, const char* func )
{
int i;
int k = MIN( len, IOBUF_MINSIZE );
BYTE* limit;
char msgbuf[133];
if (k)
{
/* Set limit */
limit = addr + k;
if (description && description[0])
fwritemsg
(
file, line, func, WRMSG_NORMAL, stdout,
MSG( HHC01390, "D", description )
);
for (i=0; addr < limit; addr += 16, i += 16, k -= 16)
{
MSGBUF( msgbuf, "%4.4X => ", i );
format_data( msgbuf+9, sizeof( msgbuf ) - 9, addr, k );
fwritemsg
(
file, line, func, WRMSG_NORMAL, stdout,
MSG( HHC01390, "D", msgbuf )
);
}
}
}
/*-------------------------------------------------------------------*/
/* Dump Storage */
/*-------------------------------------------------------------------*/
#define DUMP_STORAGE( _desc, _addr, _len ) \
_dump_storage( (char*)(_desc), (RADR)(_addr), (u_int)(_len), \
__FILE__, __LINE__, __FUNCTION__ )
static void _dump_storage( const char* description, RADR addr, const u_int len,
const char* file, int line, const char* func )
{
u_int k; /* Amount of storage to dump */
BYTE* storage; /* Real storage address */
BYTE* limit; /* Display limit */
char msgbuf[133]; /* Message buffer */
/* Set length to fully reside within defined storage */
k = CAPPED_BUFFLEN( addr, len, NULL );
if (k)
{
k = MIN( k, IOBUF_MINSIZE );
storage = sysblk.mainstor + addr;
limit = storage + k;
if (description && description[0])
fwritemsg
(
file, line, func, WRMSG_NORMAL, stdout,
MSG( HHC01391, "D", description )
);
if (sysblk.mainsize > (2 * ONE_GIGABYTE))
{
for (; storage < limit; addr += 16, storage += 16, k -= 16)
{
MSGBUF( msgbuf, "%16.16"PRIX64" => ", addr );
format_data( msgbuf+20, sizeof( msgbuf ) - 20, storage, k );
fwritemsg
(
file, line, func, WRMSG_NORMAL, stdout,
MSG( HHC01391, "D", msgbuf )
);
}
}
else
{
for (; storage < limit; addr += 16, storage += 16, k -= 16)
{
MSGBUF( msgbuf, "%8.8X => ", (u_int)addr );
format_data( msgbuf+12, sizeof( msgbuf ) - 12, storage, k );
fwritemsg
(
file, line, func, WRMSG_NORMAL, stdout,
MSG( HHC01391, "D", msgbuf )
);
}
}
}
}
#endif // DEBUG_DUMP
/*-------------------------------------------------------------------*/
/* Display channel command word and data */
/*-------------------------------------------------------------------*/
#define DISPLAY_CCW( _did, _dev, _ccw, _addr, _count, _flags ) \
_display_ccw( (_did), (_dev), (_ccw), (_addr), (_count), (_flags), \
__FILE__, __LINE__, __FUNCTION__ )
static void _display_ccw( bool* did_ccw_trace, const DEVBLK* dev,
const BYTE ccw[], const U32 addr,
const U32 count, const U8 flags,
const char* file, int line, const char* func )
{
if (*did_ccw_trace) // (did we do this already?)
return; // (then don't do it again!)
if (1
&& dev->ccwopstrace // (tracing ONLY specific CCWs?)
&& !dev->ccwops[ccw[0]] // (and NOT interested in this one?)
)
return; // (no, then don't trace it!)
if (dev->ccwtrace && sysblk.traceFILE)
{
BYTE len, amt;
len = (BYTE) CAPPED_BUFFLEN( addr, count, dev );
amt = (ccw[0] == 0xE7) ? 64 : 16;
tf_1315( dev, ccw, addr, count, dev->mainstor + addr, MIN( amt, len ));
}
else
{
BYTE area[4*64]; // (4 x to trace all 64 bytes of E7 Prefix CCW)
/* No data to be formatted if CCW is a NOP or TIC
or the CCW "Skip data transfer" flag is on. */
if (0
|| flags & CCW_FLAGS_SKIP
|| IS_CCW_NOP( ccw[0] )
|| IS_CCW_TIC( ccw[0] )
)
area[0] = 0;
else
{
if (ccw[0] == 0xE7)
e7_format_iobuf_data( addr, area, dev, count );
else
format_iobuf_data( addr, area, dev, count );
}
// "%1d:%04X CHAN: ccw %2.2X%2.2X%2.2X%2.2X %2.2X%2.2X%2.2X%2.2X%s"
fwritemsg
(
file, line, func, WRMSG_NORMAL, stdout,
MSG
(
HHC01315, "I", LCSS_DEVNUM,
ccw[0], ccw[1], ccw[2], ccw[3],
ccw[4], ccw[5], ccw[6], ccw[7], area
)
);
}
*did_ccw_trace = true; // (remember we did this)
}
/*-------------------------------------------------------------------*/
/* Format default interpretation of first two sense bytes */
/*-------------------------------------------------------------------*/
DLL_EXPORT void default_sns( char* buf, size_t buflen, BYTE b0, BYTE b1 )
{
snprintf( buf, buflen, "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s"
, (b0 & SENSE_CR ) ? "CMDREJ " : ""
, (b0 & SENSE_IR ) ? "INTREQ " : ""
, (b0 & SENSE_BOC ) ? "BUSCK " : ""
, (b0 & SENSE_EC ) ? "EQPCK " : ""
, (b0 & SENSE_DC ) ? "DATCK " : ""
, (b0 & SENSE_OR ) ? "OVRUN " : ""
, (b0 & SENSE_CC ) ? "CTLCK " : ""
, (b0 & SENSE_OC ) ? "OPRCK " : ""
, (b1 & SENSE1_PER) ? "PERM " : ""
, (b1 & SENSE1_ITF) ? "ITF " : ""
, (b1 & SENSE1_EOC) ? "EOC " : ""
, (b1 & SENSE1_MTO) ? "MSG " : ""
, (b1 & SENSE1_NRF) ? "NRF " : ""
, (b1 & SENSE1_FP ) ? "FP " : ""
, (b1 & SENSE1_WRI) ? "WRI " : ""
, (b1 & SENSE1_IE ) ? "IE " : ""
);
}
/*-------------------------------------------------------------------*/
/* Display interpretation of first two sense bytes */
/*-------------------------------------------------------------------*/
#define DISPLAY_SENSE( _dev ) \
_display_sense( (_dev), __FILE__, __LINE__, __FUNCTION__ )
static void _display_sense( const DEVBLK* dev,
const char* file, int line, const char* func )
{
char snsbuf[128];
/* Let the device interpret its own sense bytes if possible */
if (dev->sns)
dev->sns( dev, snsbuf, sizeof( snsbuf ));
else
/* Otherwise we use our default interpretation */
default_sns( snsbuf, sizeof( snsbuf ), dev->sense[0], dev->sense[1] );