Changeset 3e53ab7 in mainline for kernel/genarch/src

Timestamp:

2008-11-28T19:33:10Z (17 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

7905360

Parents:

4c4ddbe9

Message:

Initial support for interrupt driven driver for ns16550.

File:

• kernel/genarch/src/kbd/ns16550.c (modified) (5 diffs)

kernel/genarch/src/kbd/ns16550.c

@@ -135 +135 @@
         sysinfo_set_item_val("kbd.address.virtual", NULL, port);
 
+#ifdef CONFIG_NS16550_INTERRUPT_DRIVEN
+        /* Enable interrupts */
+        ns16550_ier_write(&ns16550, IER_ERBFI);
+        ns16550_mcr_write(&ns16550, MCR_OUT2);
+#endif
+
 #ifdef ia64
         uint8_t c;
@@ -150 +156 @@
 void ns16550_interrupt(void)
 {
-        /* TODO
-         *
-         * ns16550 works in the polled mode so far.
-         */
+        ns16550_poll();
 }
 
@@ -202 +205 @@
 void ns16550_poll(void)
 {
+#ifndef CONFIG_NS16550_INTERRUPT_DRIVEN 
         ipl_t ipl;
 
@@ -221 +225 @@
         spinlock_unlock(&ns16550_irq.lock);
         interrupts_restore(ipl);
+#endif
 
         while (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) {
@@ -252 +257 @@
 void ns16550_irq_handler(irq_t *irq, void *arg, ...)
 {
-        panic("Not yet implemented, ns16550 works in polled mode.\n");
+        if (irq->notif_cfg.notify && irq->notif_cfg.answerbox)
+                ipc_irq_send_notif(irq);
+        else
+                ns16550_interrupt();
 }