Implemented interrupt handling for the 3com driver; unfortunately, it does not work unchanged:

turning off interrupts on the device doesn't seem to work, and when one only acknowledges the
interrupts, they are also removed from XL_STATUS register.
The driver now starts to work: it can send and receive packets, though it currently only seem
to receive broadcast packets.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22771 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/kernel/drivers/network/3com/pci/glue.c

@@ -1,11 +1,23 @@
+/*
+ * Copyright 2007, Hugo Santos. All Rights Reserved.
+ * Copyright 2007, Axel Dörfler, [email protected]. All Rights Reserved.
+ * Distributed under the terms of the MIT License.
+ */
+
+
 #include <sys/bus.h>
 
+#include "if_xlreg.h"
+
+
 HAIKU_FBSD_DRIVER_GLUE(3com, xl, pci);
 
 extern driver_t *DRIVER_MODULE_NAME(bmtphy, miibus);
 extern driver_t *DRIVER_MODULE_NAME(xlphy, miibus);
 
-driver_t *__haiku_select_miibus_driver(device_t dev)
+
+driver_t *
+__haiku_select_miibus_driver(device_t dev)
 {
 	driver_t *drivers[] = {
 		DRIVER_MODULE_NAME(bmtphy, miibus),
@@ -15,8 +27,26 @@ driver_t *__haiku_select_miibus_driver(device_t dev)
 	return __haiku_probe_miibus(dev, drivers, 2);
 }
 
-/* TODO interrupt handling */
-NO_HAIKU_CHECK_DISABLE_INTERRUPTS();
-NO_HAIKU_REENABLE_INTERRUPTS();
+
+int
+__haiku_disable_interrupts(device_t dev)
+{
+	struct xl_softc *sc = device_get_softc(dev);
+	u_int16_t status = CSR_READ_2(sc, XL_STATUS);
+
+	if (status == 0xffff || (status & XL_INTRS) == 0)
+		return 0;
+
+	atomic_or(&sc->xl_intr_status, status);
+	CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ACK | (status & XL_INTRS));
+	return 1;
+}
+
+
+void
+__haiku_reenable_interrupts(device_t dev)
+{
+}
+
 
 HAIKU_DRIVER_REQUIREMENTS(FBSD_TASKQUEUES | FBSD_SWI_TASKQUEUE);

src/add-ons/kernel/drivers/network/3com/pci/if_xl.c

@@ -2286,11 +2286,16 @@ xl_intr(void *arg)
 	}
 #endif
 
+#ifndef __HAIKU__
 	while ((status = CSR_READ_2(sc, XL_STATUS)) & XL_INTRS &&
 	    status != 0xFFFF) {
 		CSR_WRITE_2(sc, XL_COMMAND,
 		    XL_CMD_INTR_ACK|(status & XL_INTRS));
-
+#else
+	status = atomic_and(&sc->xl_intr_status, 0);
+	dprintf("GOT %x\n", status & XL_INTRS);
+	if ((status & XL_INTRS) != 0 && status != 0xFFFF) {
+#endif
 		if (status & XL_STAT_UP_COMPLETE) {
 			int	curpkts;
 

src/add-ons/kernel/drivers/network/3com/pci/if_xlreg.h

@@ -611,6 +611,9 @@ struct xl_softc {
 #ifdef DEVICE_POLLING
 	int			rxcycles;
 #endif
+#ifdef __HAIKU__
+	u_int32_t		xl_intr_status;
+#endif
 };
 
 #define XL_LOCK(_sc)		mtx_lock(&(_sc)->xl_mtx)