diff options
Diffstat (limited to 'c/src/lib/libbsp/sparc/leon3/shmsupp/getcfg.c')
| -rw-r--r-- | c/src/lib/libbsp/sparc/leon3/shmsupp/getcfg.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/sparc/leon3/shmsupp/getcfg.c b/c/src/lib/libbsp/sparc/leon3/shmsupp/getcfg.c new file mode 100644 index 0000000000..b56702849e --- /dev/null +++ b/c/src/lib/libbsp/sparc/leon3/shmsupp/getcfg.c @@ -0,0 +1,134 @@ +/* void Shm_Get_configuration( localnode, &shmcfg ) + * + * This routine initializes, if necessary, and returns a pointer + * to the Shared Memory Configuration Table for the XXX target. + * + * INPUT PARAMETERS: + * localnode - local node number + * shmcfg - address of pointer to SHM Config Table + * + * OUTPUT PARAMETERS: + * *shmcfg - pointer to SHM Config Table + * +XXX: FIX THE COMMENTS BELOW WHEN THE CPU IS KNOWN + * NOTES: The XYZ does not have an interprocessor interrupt. + * + * The following table illustrates the configuration limitations: + * + * BUS MAX + * MODE ENDIAN NODES + * ========= ====== ======= + * POLLED BIG 2+ + * INTERRUPT **** NOT SUPPORTED **** + * + * COPYRIGHT (c) 1989-1999. + * On-Line Applications Research Corporation (OAR). + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * getcfg.c,v 1.7.8.1 2003/09/04 18:44:56 joel Exp + */ + +#include <rtems.h> +#include <bsp.h> +#include <shm_driver.h> + +/* multiprocessor communications interface (MPCI) table */ + + +extern rtems_mpci_entry Shm_Get_packet( + rtems_packet_prefix ** +); + +rtems_mpci_entry Shm_Initialization( void ); + +extern rtems_mpci_entry Shm_Receive_packet( + rtems_packet_prefix ** +); + +extern rtems_mpci_entry Shm_Return_packet( + rtems_packet_prefix * +); + +extern rtems_mpci_entry Shm_Send_packet( + rtems_unsigned32, + rtems_packet_prefix * +); + + +/* rtems_mpci_table MPCI_table = { */ +/* 100000, /\* default timeout value in ticks *\/ */ +/* MAX_PACKET_SIZE, /\* maximum packet size *\/ */ +/* Shm_Initialization, /\* initialization procedure *\/ */ +/* Shm_Get_packet, /\* get packet procedure *\/ */ +/* Shm_Return_packet, /\* return packet procedure *\/ */ +/* Shm_Send_packet, /\* packet send procedure *\/ */ +/* Shm_Receive_packet /\* packet receive procedure *\/ */ +/* }; */ + + +/* + * configured if currently polling of interrupt driven + */ + +#define INTERRUPT 0 /* XXX: */ +#define POLLING 1 /* XXX: fix me -- is polling ONLY!!! */ + + +shm_config_table BSP_shm_cfgtbl; + +void Shm_Get_configuration( + rtems_unsigned32 localnode, + shm_config_table **shmcfg +) +{ + extern rtems_configuration_table Configuration; + int i; + unsigned int tmp, ncpu; + + BSP_shm_cfgtbl.base = 0x40000000; + BSP_shm_cfgtbl.length = 0x00001000; + BSP_shm_cfgtbl.format = SHM_BIG; + + /* + * Override cause_intr or shm_isr if your target has + * special requirements. + */ + + BSP_shm_cfgtbl.cause_intr = Shm_Cause_interrupt; + +#ifdef NEUTRAL_BIG + BSP_shm_cfgtbl.convert = NULL_CONVERT; +#else + BSP_shm_cfgtbl.convert = CPU_swap_u32; +#endif + + BSP_shm_cfgtbl.poll_intr = INTR_MODE; + BSP_shm_cfgtbl.Intr.address = (vol_u32) &(LEON3_IrqCtrl_Regs->force[LEON3_Cpu_Index]); + BSP_shm_cfgtbl.Intr.value = 1 << LEON3_MP_IRQ ; + BSP_shm_cfgtbl.Intr.length = 4; + + if (LEON3_Cpu_Index == 0) + { + tmp = 0; /* ncpu = (((LEON3_IrqCtrl_Regs->mpstat) >> 28) & 0xf) + 1; */ + for (i = 1; i < (Configuration.User_multiprocessing_table)->maximum_nodes+1; i++) + tmp |= (1 << i); + LEON3_IrqCtrl_Regs->mpstat = tmp; + } + + /* + if ((Configuration.User_multiprocessing_table)->node == 1) + { + tmp = 0; + for (i = 1; i < (Configuration.User_multiprocessing_table)->maximum_nodes; i++) + { + tmp = tmp | (1 << (LEON3_Cpu_Index + i)); + } + LEON3_IrqCtrl_Regs->mpstat = tmp; + } + */ + + *shmcfg = &BSP_shm_cfgtbl; +} |