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| author | Kinsey Moore <kinsey.moore@oarcorp.com> | 2022-06-16 13:32:21 -0500 |
|---|---|---|
| committer | Kinsey Moore <kinsey.moore@oarcorp.com> | 2022-07-12 08:41:46 -0500 |
| commit | c3b8ce71c4897be9984e555d8f1042e273edaa35 (patch) | |
| tree | 5d0960badf954c4dc9dd6e34736652a754091042 /uLan/ports/os/rtems/arch/sys_arch.c | |
| parent | telnetd01: Break out network startup (diff) | |
| download | rtems-lwip-c3b8ce71c4897be9984e555d8f1042e273edaa35.tar.bz2 | |
lwip: Add support for SMP systems
For BSPs that support SMP, the sys_arch_protect and sys_arch_unprotect
calls must use a global mutex instead of a local CPU interrupt disable
to protect critical sections.
Diffstat (limited to 'uLan/ports/os/rtems/arch/sys_arch.c')
| -rw-r--r-- | uLan/ports/os/rtems/arch/sys_arch.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/uLan/ports/os/rtems/arch/sys_arch.c b/uLan/ports/os/rtems/arch/sys_arch.c index fa344a1..3a454b8 100644 --- a/uLan/ports/os/rtems/arch/sys_arch.c +++ b/uLan/ports/os/rtems/arch/sys_arch.c @@ -57,6 +57,14 @@ sys_now() return temp; } +#ifdef __rtems__ +#if RTEMS_SMP +#include <rtems/thread.h> +rtems_recursive_mutex sys_arch_lock = + RTEMS_RECURSIVE_MUTEX_INITIALIZER( "LWIP System Protection Lock" ); +#endif +#endif + void sys_init(void) { @@ -366,14 +374,24 @@ sys_arch_protect() { sys_prot_t pval; +#if RTEMS_SMP + pval = _Thread_Dispatch_disable(); + rtems_recursive_mutex_lock( &sys_arch_lock ); +#else rtems_interrupt_disable(pval); +#endif return pval; } void sys_arch_unprotect(sys_prot_t pval) { +#if RTEMS_SMP + rtems_recursive_mutex_unlock( &sys_arch_lock ); + _Thread_Dispatch_enable(pval); +#else rtems_interrupt_enable(pval); +#endif } err_t sys_mbox_trypost_fromisr(sys_mbox_t *q, void *msg) |