diff options
Diffstat (limited to 'sys/dev/hea/eni_intr.c')
| -rw-r--r-- | sys/dev/hea/eni_intr.c | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/sys/dev/hea/eni_intr.c b/sys/dev/hea/eni_intr.c new file mode 100644 index 0000000..e0a5642 --- /dev/null +++ b/sys/dev/hea/eni_intr.c @@ -0,0 +1,230 @@ +/* + * + * =================================== + * 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. + * + * @(#) $Id: eni_intr.c,v 1.4 1998/08/26 23:28:54 mks Exp $ + * + */ + +/* + * Efficient ENI Adapter Support + * ----------------------------- + * + * Interrupt processing + * + */ + +#ifndef lint +static char *RCSid = "@(#) $Id: eni_intr.c,v 1.4 1998/08/26 23:28:54 mks Exp $"; +#endif + +#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> + +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%x\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 +} + |
