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on a shutdown request, we shutdown the network und flush the cache

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This commit is contained in:
Stefan Lankes 2016-01-05 23:17:27 +01:00
parent 39a12ec08e
commit dccbccbbd6
4 changed files with 32 additions and 7 deletions
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24
hermit/arch/x86/kernel/apic.c
View file

@ -62,6 +62,7 @@ typedef struct {
static const apic_processor_entry_t* apic_processors[MAX_APIC_CORES] = {[0 ... MAX_APIC_CORES-1] = NULL};
extern int32_t boot_processor;
extern uint32_t cpu_freq;
extern atomic_int32_t cpu_online;
apic_mp_t* apic_mp __attribute__ ((section (".data"))) = NULL;
static apic_config_table_t* apic_config = NULL;
static size_t lapic = 0;
@ -736,17 +737,32 @@ static void apic_err_handler(struct state *s)
static void apic_shutdown(struct state *s)
{
kprintf("Receive an IPI to shutdown HermitCore\n");
int if_bootprocessor = (apic_processors[boot_processor]->id == apic_cpu_id());
if (if_bootprocessor) {
kprintf("Receive an IPI to shutdown HermitCore\n");
while(atomic_int32_read(&cpu_online) != 1)
PAUSE;
network_shutdown();
kprintf("Diable APIC timer\n");
}
kprintf("Diable APIC timer\n");
apic_disable_timer();
kprintf("Disable APIC\n");
if (if_bootprocessor)
kprintf("Disable APIC\n");
lapic_write(APIC_LVT_TSR, 0x10000); // disable thermal sensor interrupt
lapic_write(APIC_LVT_PMC, 0x10000); // disable performance counter interrupt
lapic_write(APIC_SVR, 0x00); // disable the apic
kprintf("System goes down...\n");
if (if_bootprocessor)
kprintf("System goes down...\n");
flush_cache();
atomic_int32_dec(&cpu_online);
HALT;
kprintf("Ups, we should never reach this point!\n");

6
hermit/include/hermit/tasks.h
View file

@ -206,9 +206,13 @@ void NORETURN do_abort(void);
void NORETURN leave_kernel_task(void);
/** @brief if a task exists with higher priority, HermitCore switch to it.
* */
*/
void check_scheduling(void);
/** @brief This function shutdowns the (ip) network
*/
int network_shutdown(void);
#ifdef DYNAMIC_TICKS
/** @brief check, if the tick counter has to be updated
* */

7
hermit/kernel/main.c
View file

@ -188,8 +188,13 @@ static int init_netifs(void)
return 0;
}
static int network_shutdown(void)
int network_shutdown(void)
{
kputs("Shutdown LwIP\n");
if (libc_sd > 0)
closesocket(libc_sd);
mmnif_shutdown();
netifapi_netif_set_down(&mmnif_netif);

2
hermit/kernel/tasks.c
View file

@ -460,7 +460,7 @@ int create_task(tid_t* id, entry_point_t ep, void* arg, uint8_t prio, uint32_t c
}
if (!ret)
kprintf("start new thread %d on core %d with stack address %p\n", i, core_id, stack);
kprintf("start new task %d on core %d with stack address %p\n", i, core_id, stack);
out:
spinlock_irqsave_unlock(&table_lock);