From d8ff7084f25c6b93d14ec73758d733de8ba676e6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Axel=20D=C3=B6rfler?= <axeld@pinc-software.de>
Date: Tue, 30 Oct 2007 16:53:16 +0000
Subject: [PATCH] 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
---
 .../kernel/drivers/network/3com/pci/glue.c    | 38 +++++++++++++++++--
 .../kernel/drivers/network/3com/pci/if_xl.c   |  7 +++-
 .../drivers/network/3com/pci/if_xlreg.h       |  3 ++
 3 files changed, 43 insertions(+), 5 deletions(-)

diff --git a/src/add-ons/kernel/drivers/network/3com/pci/glue.c b/src/add-ons/kernel/drivers/network/3com/pci/glue.c
index 05a45fb604..dd9a1cbcb6 100644
--- a/src/add-ons/kernel/drivers/network/3com/pci/glue.c
+++ b/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, axeld@pinc-software.de. 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);
diff --git a/src/add-ons/kernel/drivers/network/3com/pci/if_xl.c b/src/add-ons/kernel/drivers/network/3com/pci/if_xl.c
index 65d6e3b1cf..9e9f6b61bc 100644
--- a/src/add-ons/kernel/drivers/network/3com/pci/if_xl.c
+++ b/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;
 
diff --git a/src/add-ons/kernel/drivers/network/3com/pci/if_xlreg.h b/src/add-ons/kernel/drivers/network/3com/pci/if_xlreg.h
index 7dab376a42..31d4d1a206 100644
--- a/src/add-ons/kernel/drivers/network/3com/pci/if_xlreg.h
+++ b/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)