diff options
Diffstat (limited to 'c/src/lib/libbsp/sparc/leon3/shmsupp')
| -rw-r--r-- | c/src/lib/libbsp/sparc/leon3/shmsupp/.cvsignore | 2 | ||||
| -rw-r--r-- | c/src/lib/libbsp/sparc/leon3/shmsupp/Makefile.am | 32 | ||||
| -rw-r--r-- | c/src/lib/libbsp/sparc/leon3/shmsupp/addrconv.c | 30 | ||||
| -rw-r--r-- | c/src/lib/libbsp/sparc/leon3/shmsupp/getcfg.c | 134 | ||||
| -rw-r--r-- | c/src/lib/libbsp/sparc/leon3/shmsupp/lock.c | 97 | ||||
| -rw-r--r-- | c/src/lib/libbsp/sparc/leon3/shmsupp/mpisr.c | 48 |
6 files changed, 343 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/sparc/leon3/shmsupp/.cvsignore b/c/src/lib/libbsp/sparc/leon3/shmsupp/.cvsignore new file mode 100644 index 0000000000..282522db03 --- /dev/null +++ b/c/src/lib/libbsp/sparc/leon3/shmsupp/.cvsignore @@ -0,0 +1,2 @@ +Makefile +Makefile.in diff --git a/c/src/lib/libbsp/sparc/leon3/shmsupp/Makefile.am b/c/src/lib/libbsp/sparc/leon3/shmsupp/Makefile.am new file mode 100644 index 0000000000..f2a6e08f02 --- /dev/null +++ b/c/src/lib/libbsp/sparc/leon3/shmsupp/Makefile.am @@ -0,0 +1,32 @@ +## +## Makefile.am,v 1.4 2002/12/14 08:17:17 ralf Exp +## + + +PGM = $(ARCH)/shmsupp.rel + +C_FILES = addrconv.c getcfg.c lock.c mpisr.c +C_O_FILES = $(C_FILES:%.c=$(ARCH)/%.$(OBJEXT)) + +OBJS = $(C_O_FILES) + +include $(top_srcdir)/../../../../../../automake/compile.am +include $(top_srcdir)/../../../../../../automake/lib.am + +# +# (OPTIONAL) Add local stuff here using += +# + +$(PGM): $(OBJS) + $(make-rel) + +# the .rel file built here will be put into libbsp.a by ../wrapup/Makefile + +if HAS_MP +all-local: $(ARCH) $(OBJS) $(PGM) +endif + +.PRECIOUS: $(PGM) + +EXTRA_DIST = addrconv.c getcfg.c lock.c mpisr.c +include $(top_srcdir)/../../../../../../automake/local.am diff --git a/c/src/lib/libbsp/sparc/leon3/shmsupp/addrconv.c b/c/src/lib/libbsp/sparc/leon3/shmsupp/addrconv.c new file mode 100644 index 0000000000..0bf94d20b7 --- /dev/null +++ b/c/src/lib/libbsp/sparc/leon3/shmsupp/addrconv.c @@ -0,0 +1,30 @@ +/* Shm_Convert_address + * + * No address range conversion is required. + * + * Input parameters: + * address - address to convert + * + * Output parameters: + * returns - converted address + * + * 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. + * + * addrconv.c,v 1.7.8.1 2003/09/04 18:44:55 joel Exp + */ + +#include <rtems.h> +#include <bsp.h> +#include <shm_driver.h> + +void *Shm_Convert_address( + void *address +) +{ + return ( address ); +} 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; +} diff --git a/c/src/lib/libbsp/sparc/leon3/shmsupp/lock.c b/c/src/lib/libbsp/sparc/leon3/shmsupp/lock.c new file mode 100644 index 0000000000..a750f818ac --- /dev/null +++ b/c/src/lib/libbsp/sparc/leon3/shmsupp/lock.c @@ -0,0 +1,97 @@ +/* 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) 1989-1999. + * 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. + * + * lock.c,v 1.9.4.1 2003/09/04 18:44:56 joel Exp + */ + +#include <rtems.h> +#include <bsp.h> +#include <shm_driver.h> + + +/* + * 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_UNLOCKED; +} + +/* void _Shm_Lock( &lq_cb ) + * + * This shared memory locked queue support routine locks the + * specified locked queue. It disables interrupts to prevent + * a deadlock condition. + */ + +asm( + ".text\n" + ".align 4\n" +"LEON3_Atomic_Swap:\n" +" retl\n" +" swapa [%o1] 1, %o0\n" +); + + + +void Shm_Lock( + Shm_Locked_queue_Control *lq_cb +) +{ + rtems_unsigned32 isr_level; + rtems_unsigned32 *lockptr = (rtems_unsigned32 *) &lq_cb->lock; + rtems_unsigned32 lock_value; + + lock_value = SHM_LOCK_VALUE; + rtems_interrupt_disable( isr_level ); + + Shm_isrstat = isr_level; + while ( lock_value ) { + lock_value = LEON3_Atomic_Swap(lock_value, lockptr); +/* asm volatile( "" */ +/* : "=r" (lockptr), "=r" (lock_value) */ +/* : "0" (lockptr), "1" (lock_value) */ +/* ); */ + /* + * If not available, then may want to delay to reduce load on lock. + */ + +/* if ( lock_value ) */ +/* rtems_bsp_delay( 10 ); /\* approximately 10 microseconds *\/ */ + } +} + +/* + * Shm_Unlock + * + * Unlock the lock for the specified locked queue. + */ + +void Shm_Unlock( + Shm_Locked_queue_Control *lq_cb +) +{ + rtems_unsigned32 isr_level; + + lq_cb->lock = SHM_UNLOCK_VALUE; + isr_level = Shm_isrstat; + rtems_interrupt_enable( isr_level ); +} + diff --git a/c/src/lib/libbsp/sparc/leon3/shmsupp/mpisr.c b/c/src/lib/libbsp/sparc/leon3/shmsupp/mpisr.c new file mode 100644 index 0000000000..a414b8b884 --- /dev/null +++ b/c/src/lib/libbsp/sparc/leon3/shmsupp/mpisr.c @@ -0,0 +1,48 @@ +/* Shm_isr_nobsp() + * + * 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. + * + * mpisr.c,v 1.7.8.1 2003/09/04 18:44:56 joel Exp + */ + +#include <rtems.h> +#include <bsp.h> +#include <shm_driver.h> + +rtems_isr Shm_isr_nobsp( void ) +{ + /* + * If this routine has to do anything other than the mpisr.c + * found in the generic driver, then copy the contents of the generic + * mpisr.c and augment it to satisfy this particular board. Typically, + * you need to have a board specific mpisr.c when the interrupt + * must be cleared. + * + * If the generic mpisr.c satisifies your requirements, then + * remove this routine from your target's shmsupp/mpisb.c file. + * Then simply install the generic Shm_isr in the Shm_setvec + * routine below. + */ +} + +/* Shm_setvec + * + * This driver routine sets the SHM interrupt vector to point to the + * driver's SHM interrupt service routine. + * + * Input parameters: NONE + * + * Output parameters: NONE + */ + + +void Shm_setvec( void ) +{ + LEON_Unmask_interrupt(LEON3_MP_IRQ); + set_vector(Shm_isr, LEON_TRAP_TYPE(LEON3_MP_IRQ), 1); +} |