diff options
Diffstat (limited to 'c/src/lib/libbsp/hppa1.1/simhppa/shmsupp/getcfg.c')
-rw-r--r-- | c/src/lib/libbsp/hppa1.1/simhppa/shmsupp/getcfg.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/hppa1.1/simhppa/shmsupp/getcfg.c b/c/src/lib/libbsp/hppa1.1/simhppa/shmsupp/getcfg.c new file mode 100644 index 0000000000..e21e62f55d --- /dev/null +++ b/c/src/lib/libbsp/hppa1.1/simhppa/shmsupp/getcfg.c @@ -0,0 +1,84 @@ +/* void Shm_Get_configuration( localnode, &shmcfg ) + * + * This routine initializes, if necessary, and returns a pointer + * to the Shared Memory Configuration Table for the HP PA-RISC + * simulator. + * + * INPUT PARAMETERS: + * localnode - local node number + * shmcfg - address of pointer to SHM Config Table + * + * OUTPUT PARAMETERS: + * *shmcfg - pointer to SHM Config Table + * + * NOTES: The MP interrupt used is the Runway bus' ability to directly + * address the control registers of up to four CPUs and cause + * interrupts on them. + * + * The following table illustrates the configuration limitations: + * + * BUS MAX + * MODE ENDIAN NODES + * ========= ====== ======= + * POLLED BIG 2+ + * INTERRUPT BIG 2..4 (on Runway) + * + * 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 <runway.h> + +#include "shm.h" + +#define INTERRUPT 0 /* can be interrupt or polling */ +#define POLLING 1 + +shm_config_table BSP_shm_cfgtbl; + +void Shm_Cause_interrupt_simhppa( + rtems_unsigned32 node +); + +void Shm_Get_configuration( + rtems_unsigned32 localnode, + shm_config_table **shmcfg +) +{ + BSP_shm_cfgtbl.base = (vol_u32 *) 0x44000000; + BSP_shm_cfgtbl.length = 16 * KILOBYTE; + BSP_shm_cfgtbl.format = SHM_BIG; + + BSP_shm_cfgtbl.cause_intr = Shm_Cause_interrupt_simhppa; + +#ifdef NEUTRAL_BIG + BSP_shm_cfgtbl.convert = NULL_CONVERT; +#else + BSP_shm_cfgtbl.convert = CPU_swap_u32; +#endif + +#if ( POLLING == 1 ) + 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; +#else + BSP_shm_cfgtbl.poll_intr = INTR_MODE; + BSP_shm_cfgtbl.Intr.address = + (vol_u32 *) (HPPA_RUNWAY_HPA( localnode - 1) + + HPPA_RUNWAY_REG_IO_EIR_OFFSET); + BSP_shm_cfgtbl.Intr.value = HPPA_INTERRUPT_EXTERNAL_MPCI; + BSP_shm_cfgtbl.Intr.length = LONG; +#endif + + *shmcfg = &BSP_shm_cfgtbl; +} + |