Changeset 0d107f31 in mainline for kernel/genarch/src/kbd/z8530.c

Timestamp:

2006-10-13T20:42:54Z (18 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

7dcf22a

Parents:

8ce8499

Message:

Prototypical implementation of new IRQ redirector in sparc64.
The new code can support shared IRQs in kernel (and multiple IRQs per device).
Userspace support is yet to be written.
The only architecture that uses this code is actually sparc64 only.

File:

• kernel/genarch/src/kbd/z8530.c (modified) (2 diffs)

kernel/genarch/src/kbd/z8530.c

@@ -40 +40 @@
 #include <genarch/kbd/scanc_sun.h>
 #include <arch/drivers/z8530.h>
+#include <irq.h>
 #include <arch/interrupt.h>
 #include <arch/drivers/kbd.h>
+#include <arch/drivers/fhc.h>
 #include <cpu.h>
 #include <arch/asm.h>
@@ -170 +172 @@
 }
 
+irq_ownership_t z8530_claim(void)
+{
+        return (z8530_read_a(RR0) & RR0_RCA);
+}
+
+void z8530_irq_handler(irq_t *irq, void *arg, ...)
+{
+        /*
+         * So far, we know we got this interrupt through the FHC.
+         * Since we don't have enough information about the FHC and
+         * because the interrupt looks like level sensitive,
+         * we cannot handle it by scheduling one of the level
+         * interrupt traps. Process the interrupt directly.
+         */
+        if (z8530_belongs_to_kernel)
+                z8530_interrupt();
+        else
+                ipc_irq_send_notif(0);
+        fhc_clear_interrupt(central_fhc, irq->inr);
+}
+
 /** @}
  */