diff options
Diffstat (limited to 'c/src/lib/libbsp/unix')
-rw-r--r-- | c/src/lib/libbsp/unix/posix/shmsupp/README | 9 | ||||
-rw-r--r-- | c/src/lib/libbsp/unix/posix/shmsupp/addrconv.c | 30 | ||||
-rw-r--r-- | c/src/lib/libbsp/unix/posix/shmsupp/getcfg.c | 74 | ||||
-rw-r--r-- | c/src/lib/libbsp/unix/posix/shmsupp/intr.c | 33 | ||||
-rw-r--r-- | c/src/lib/libbsp/unix/posix/shmsupp/lock.c | 74 |
5 files changed, 220 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/unix/posix/shmsupp/README b/c/src/lib/libbsp/unix/posix/shmsupp/README index e69de29bb2..93d6fcbe8c 100644 --- a/c/src/lib/libbsp/unix/posix/shmsupp/README +++ b/c/src/lib/libbsp/unix/posix/shmsupp/README @@ -0,0 +1,9 @@ +# +# $Id$ +# + +This directory contains the SHM driver support files for +System V/POSIX derived UNIX flavors. + +WARNING: The interrupt support in this directory currently will + only work in a homogeneous system. diff --git a/c/src/lib/libbsp/unix/posix/shmsupp/addrconv.c b/c/src/lib/libbsp/unix/posix/shmsupp/addrconv.c index e69de29bb2..2b34ec8584 100644 --- a/c/src/lib/libbsp/unix/posix/shmsupp/addrconv.c +++ b/c/src/lib/libbsp/unix/posix/shmsupp/addrconv.c @@ -0,0 +1,30 @@ +/* addrconv.v + * + * No address range conversion is required. + * + * Input parameters: + * addr - address to convert + * + * Output parameters: + * returns - converted address + * + * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. + * On-Line Applications Research Corporation (OAR). + * All rights assigned to U.S. Government, 1994. + * + * This material may be reproduced by or for the U.S. Government pursuant + * to the copyright license under the clause at DFARS 252.227-7013. This + * notice must appear in all copies of this file and its derivatives. + * + * $Id$ + */ + +#include <bsp.h> +#include <shm.h> + +void *Shm_Convert_address( + void *addr +) +{ + return ( addr ); +} diff --git a/c/src/lib/libbsp/unix/posix/shmsupp/getcfg.c b/c/src/lib/libbsp/unix/posix/shmsupp/getcfg.c index e69de29bb2..c912447631 100644 --- a/c/src/lib/libbsp/unix/posix/shmsupp/getcfg.c +++ b/c/src/lib/libbsp/unix/posix/shmsupp/getcfg.c @@ -0,0 +1,74 @@ +/* void Shm_get_config( localnode, &shmcfg ) + * + * This routine initializes, if necessary, and returns a pointer + * to the Shared Memory Configuration Table for the UNIX + * simulator. + * + * INPUT PARAMETERS: + * localnode - local node number + * shmcfg - address of pointer to SHM Config Table + * + * OUTPUT PARAMETERS: + * *shmcfg - pointer to SHM Config Table + * + * NOTES: This driver is capable of supporting a practically unlimited + * number of nodes. + * + * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. + * On-Line Applications Research Corporation (OAR). + * All rights assigned to U.S. Government, 1994. + * + * This material may be reproduced by or for the U.S. Government pursuant + * to the copyright license under the clause at DFARS 252.227-7013. This + * notice must appear in all copies of this file and its derivatives. + * + * $Id$ + */ + +#include <bsp.h> +#include <shm.h> + +shm_config_table BSP_shm_cfgtbl; + +int semid; + +void Shm_Cause_interrupt_unix( + rtems_unsigned32 node +); + +void Shm_Get_configuration( + rtems_unsigned32 localnode, + shm_config_table **shmcfg +) +{ + _CPU_SHM_Init( + Shm_Maximum_nodes, + Shm_Is_master_node(), + (void **)&BSP_shm_cfgtbl.base, + (unsigned32 *)&BSP_shm_cfgtbl.length + ); + + BSP_shm_cfgtbl.format = SHM_BIG; + + BSP_shm_cfgtbl.cause_intr = Shm_Cause_interrupt_unix; + +#ifdef NEUTRAL_BIG + BSP_shm_cfgtbl.convert = NULL_CONVERT; +#else + BSP_shm_cfgtbl.convert = CPU_swap_u32; +#endif + + if ( _CPU_SHM_Get_vector() ) { + BSP_shm_cfgtbl.poll_intr = INTR_MODE; + BSP_shm_cfgtbl.Intr.address = (vol_u32 *) _CPU_Get_pid(); /* process id */ + BSP_shm_cfgtbl.Intr.value = _CPU_SHM_Get_vector(); /* signal to send */ + BSP_shm_cfgtbl.Intr.length = LONG; + } else { + BSP_shm_cfgtbl.poll_intr = POLLED_MODE; + BSP_shm_cfgtbl.Intr.address = NO_INTERRUPT; + BSP_shm_cfgtbl.Intr.value = NO_INTERRUPT; + BSP_shm_cfgtbl.Intr.length = NO_INTERRUPT; + } + + *shmcfg = &BSP_shm_cfgtbl; +} diff --git a/c/src/lib/libbsp/unix/posix/shmsupp/intr.c b/c/src/lib/libbsp/unix/posix/shmsupp/intr.c index e69de29bb2..243af403d9 100644 --- a/c/src/lib/libbsp/unix/posix/shmsupp/intr.c +++ b/c/src/lib/libbsp/unix/posix/shmsupp/intr.c @@ -0,0 +1,33 @@ +/* void Shm_interrupt_unix( node ) + * + * This routine is the shared memory driver routine which + * generates interrupts to other CPUs. + * + * Input parameters: + * node - destination of this packet (0 = broadcast) + * + * Output parameters: NONE + * + * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. + * On-Line Applications Research Corporation (OAR). + * All rights assigned to U.S. Government, 1994. + * + * This material may be reproduced by or for the U.S. Government pursuant + * to the copyright license under the clause at DFARS 252.227-7013. This + * notice must appear in all copies of this file and its derivatives. + * + * $Id$ + */ + +#include <bsp.h> +#include <shm.h> + +void Shm_Cause_interrupt_unix( + rtems_unsigned32 node +) +{ + Shm_Interrupt_information *intr; + intr = &Shm_Interrupt_table[node]; + + _CPU_SHM_Send_interrupt( (int) intr->address, (int) intr->value ); +} diff --git a/c/src/lib/libbsp/unix/posix/shmsupp/lock.c b/c/src/lib/libbsp/unix/posix/shmsupp/lock.c index e69de29bb2..76a57d0a06 100644 --- a/c/src/lib/libbsp/unix/posix/shmsupp/lock.c +++ b/c/src/lib/libbsp/unix/posix/shmsupp/lock.c @@ -0,0 +1,74 @@ +/* Shared Memory Lock Routines + * + * This shared memory locked queue support routine need to be + * able to lock the specified locked queue. Interrupts are + * disabled while the queue is locked to prevent preemption + * and deadlock when two tasks poll for the same lock. + * previous level. + * + * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. + * On-Line Applications Research Corporation (OAR). + * All rights assigned to U.S. Government, 1994. + * + * This material may be reproduced by or for the U.S. Government pursuant + * to the copyright license under the clause at DFARS 252.227-7013. This + * notice must appear in all copies of this file and its derivatives. + * + * $Id$ + */ + +#include <bsp.h> +#include <shm.h> + +extern int semid; + +/* + * Shm_Initialize_lock + * + * Initialize the lock for the specified locked queue. + */ + +void Shm_Initialize_lock( + Shm_Locked_queue_Control *lq_cb +) +{ + lq_cb->lock = lq_cb - Shm_Locked_queues; +} + +/* Shm_Lock( &lq_cb ) + * + * This shared memory locked queue support routine locks the + * specified locked queue. It disables interrupts to prevent + * a deadlock condition. + */ + +void Shm_Lock( + Shm_Locked_queue_Control *lq_cb +) +{ + rtems_unsigned32 isr_level; + + rtems_interrupt_disable( isr_level ); + + Shm_isrstat = isr_level; + + _CPU_SHM_Lock( lq_cb->lock ); +} + +/* + * Shm_Unlock + * + * Unlock the lock for the specified locked queue. + */ + +void Shm_Unlock( + Shm_Locked_queue_Control *lq_cb +) +{ + rtems_unsigned32 isr_level; + + _CPU_SHM_Unlock( lq_cb->lock ); + + isr_level = Shm_isrstat; + rtems_interrupt_enable( isr_level ); +} |