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/*
*
* ===================================
* HARP | Host ATM Research Platform
* ===================================
*
*
* This Host ATM Research Platform ("HARP") file (the "Software") is
* made available by Network Computing Services, Inc. ("NetworkCS")
* "AS IS". NetworkCS does not provide maintenance, improvements or
* support of any kind.
*
* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
* In no event shall NetworkCS be responsible for any damages, including
* but not limited to consequential damages, arising from or relating to
* any use of the Software or related support.
*
* Copyright 1994-1998 Network Computing Services, Inc.
*
* Copies of this Software may be made, however, the above copyright
* notice must be reproduced on all copies.
*
* @(#) $FreeBSD$
*
*/
/*
* Efficient ENI Adapter Support
* -----------------------------
*
* Interrupt processing
*
*/
#include <netatm/kern_include.h>
#include <dev/hea/eni_stats.h>
#include <dev/hea/eni.h>
#include <dev/hea/eni_suni.h>
#include <dev/hea/eni_var.h>
#ifndef lint
__RCSID("@(#) $FreeBSD$");
#endif
static void eni_suni_intr __P((Eni_unit *));
/*
* SUNI Interrupt processing
*
* Currently, we don't do anything more then clear the interrupt
* for the SUNI chip.
*
* Arguments:
* eup pointer to device unit structure
*
* Returns:
* none
*
*/
static void
eni_suni_intr ( eup )
Eni_unit *eup;
{
int SuniInt;
int val;
SuniInt = eup->eu_suni[SUNI_IS_REG];
/* RSOPI */
if ( SuniInt & SUNI_RSOPI )
val = eup->eu_suni[SUNI_RSOP_REG];
/* RLOPI */
if ( SuniInt & SUNI_RLOPI )
val = eup->eu_suni[SUNI_RLOP_REG];
/* RPOPI */
if ( SuniInt & SUNI_RPOPI )
val = eup->eu_suni[SUNI_RPOP_IS_REG];
/* RACPI */
if ( SuniInt & SUNI_RACPI )
val = eup->eu_suni[SUNI_RACP_REG];
/* TACPI */
if ( SuniInt & SUNI_TACPI )
val = eup->eu_suni[SUNI_TACP_REG];
/* TROOLI */
if ( SuniInt & SUNI_TROOLI )
val = eup->eu_suni[SUNI_CLOCK_REG];
/* LCDI */
/* Cleared when reading Master Interrupt Status Reg */
/* RDOOLI */
if ( SuniInt & SUNI_RDOOLI )
val = eup->eu_suni[SUNI_CLOCK_REG];
return;
}
/*
* Device interrupt routine
*
* Service an interrupt from this device
*
* Arguments:
* eup pointer to device unit structure
*
* Returns:
* none
*
*/
#if defined(BSD) && BSD < 199506
int
#else
void
#endif
eni_intr ( arg )
void *arg;
{
Eni_unit *eup = (Eni_unit *)arg;
#if defined(BSD) && BSD < 199506
int serviced = 1;
#endif /* BSD < 199506 */
/*
* Read and acknowledge any interrupts
*/
u_long mask = eup->eu_midway[MIDWAY_ISA];
/*
* Read the error statistics counter
*/
u_long sval = eup->eu_midway[MIDWAY_STAT];
/*
* Update statistics from adapter
*/
eup->eu_trash += ( sval >> 16 );
eup->eu_ovfl += ( sval & 0xffff );
/*
* We handle any DMA completes first so
* that we can free resources for use
* during transmit and especially receive
*/
/*
* Handle RX DMA Complete
*/
if ( mask & ENI_INT_RX_DMA ) {
eni_recv_drain ( eup );
}
/*
* Handle TX DMA Complete
*/
if ( mask & ENI_INT_TX_DMA ) {
eni_xmit_drain ( eup );
}
/*
* Look for any PDUs in service list
*/
if ( mask & ENI_INT_SERVICE ) {
eni_do_service ( eup );
}
/*
* Handle miscelaneous interrupts
*/
if ( mask & ENI_INT_STAT ) { /* STAT_OVFL */
log ( LOG_INFO, "eni_intr: stat_ovfl: 0x%lx\n", sval );
}
if ( mask & ENI_INT_SUNI ) { /* SUNI_INTR */
eni_suni_intr ( eup );
}
if ( mask & ENI_INT_DMA_ERR ) { /* DMA Error */
log ( LOG_ERR,
"eni_intr: DMA Error\n" );
/*
* We don't know how to recover from DMA errors
* yet. The adapter has disabled any further
* processing and we're going to leave it like
* that.
*/
#if defined(BSD) && BSD < 199506
return serviced; /* Leave now */
#else
return; /* Leave now */
#endif
}
if ( mask & ENI_INT_IDEN ) {
log ( LOG_ERR,
"eni_intr: TX DMA Ident mismatch\n" );
/*
* Something in the TX buffer has really gotten messed
* up. Since this is most likely a driver bug, and
* the adapter has shut everything down, leave it
* like that.
*/
#if BSD < 199506
return 0; /* Leave now */
#else
return; /* Leave now */
#endif
}
if ( mask & ENI_INT_DMA_OVFL )
eup->eu_stats.eni_st_drv.drv_xm_dmaovfl++;
if ( mask & ENI_INT_DMA_LERR ) {
log ( LOG_ERR,
"eni_intr: DMA LERR\n" );
#if BSD < 199506
return 0;
#else
return;
#endif
}
#if BSD < 199506
return 0;
#else
return;
#endif
}
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