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Compare Revisions

• This comparison shows the changes necessary to convert path

  → /trunk/kernel/generic/src/ipc/ @ 1932

  → /trunk/kernel/generic/src/ipc/ @ 1933

  ↔ Reverse comparison

• Compare Path:	Rev

  With Path:	Rev

Ignore whitespace Rev 1932 → Rev 1933

/trunk/kernel/generic/src/ipc/ipc.c
108,6 → 108,7
list_initialize(&box->dispatched_calls);
list_initialize(&box->answers);
list_initialize(&box->irq_notifs);
list_initialize(&box->irq_head);
box->task = TASK;
}

/trunk/kernel/generic/src/ipc/irq.c
176,12 → 176,17
irq = irq_find_and_lock(inr, devno);
if (irq) {
if (irq->notif_cfg.answerbox == box) {
code_free(irq->notif_cfg.code);
irq->notif_cfg.notify = false;
irq->notif_cfg.answerbox = NULL;
irq->notif_cfg.code = NULL;
irq->notif_cfg.method = 0;
irq->notif_cfg.counter = 0;
code_free(irq->notif_cfg.code);
spinlock_lock(&box->irq_lock);
list_remove(&irq->notif_cfg.link);
spinlock_unlock(&box->irq_lock);
spinlock_unlock(&irq->lock);
}
}
198,8 → 203,7
*
* @return EBADMEM, ENOENT or EEXISTS on failure or 0 on success.
*/
int
ipc_irq_register(answerbox_t *box, inr_t inr, devno_t devno, unative_t method, irq_code_t *ucode)
int ipc_irq_register(answerbox_t *box, inr_t inr, devno_t devno, unative_t method, irq_code_t *ucode)
{
ipl_t ipl;
irq_code_t *code;
232,6 → 236,11
irq->notif_cfg.method = method;
irq->notif_cfg.code = code;
irq->notif_cfg.counter = 0;
spinlock_lock(&box->irq_lock);
list_append(&irq->notif_cfg.link, &box->irq_head);
spinlock_unlock(&box->irq_lock);
spinlock_unlock(&irq->lock);
interrupts_restore(ipl);
310,11 → 319,54
/** Disconnect all IRQ notifications from an answerbox.
*
* This function is effective because the answerbox contains
* list of all irq_t structures that are registered to
* send notifications to it.
*
* @param box Answerbox for which we want to carry out the cleanup.
*/
void ipc_irq_cleanup(answerbox_t *box)
{
/* TODO */
ipl_t ipl;
loop:
ipl = interrupts_disable();
spinlock_lock(&box->irq_lock);
while (box->irq_head.next != &box->irq_head) {
link_t *cur = box->irq_head.next;
irq_t *irq;
irq = list_get_instance(cur, irq_t, notif_cfg.link);
if (!spinlock_trylock(&irq->lock)) {
/*
* Avoid deadlock by trying again.
*/
spinlock_unlock(&box->irq_lock);
interrupts_restore(ipl);
goto loop;
}
ASSERT(irq->notif_cfg.answerbox == box);
list_remove(&irq->notif_cfg.link);
/*
* Don't forget to free any top-half pseudocode.
*/
code_free(irq->notif_cfg.code);
irq->notif_cfg.notify = false;
irq->notif_cfg.answerbox = NULL;
irq->notif_cfg.code = NULL;
irq->notif_cfg.method = 0;
irq->notif_cfg.counter = 0;
spinlock_unlock(&irq->lock);
}
spinlock_unlock(&box->irq_lock);
interrupts_restore(ipl);
}
/** @}