realtekwifi: Import from FreeBSD 11.1.

Untested, but requested by Anarchos.

build/jam/images/definitions/minimum

@@ -206,7 +206,7 @@ SYSTEM_ADD_ONS_DRIVERS_NET = [ FFilterByBuildFeatures
 		iprowifi2100 iprowifi2200 iprowifi3945 iprowifi4965
 		idualwifi7260
 		marvell88w8363 marvell88w8335
-		ralinkwifi
+		ralinkwifi realtekwifi
 		wavelanwifi
 	}@ # x86,x86_64
 ] ;

src/add-ons/kernel/drivers/network/wlan/Jamfile

@@ -10,6 +10,7 @@ SubInclude HAIKU_TOP src add-ons kernel drivers network wlan iprowifi4965 ;
 SubInclude HAIKU_TOP src add-ons kernel drivers network wlan marvell88w8335 ;
 SubInclude HAIKU_TOP src add-ons kernel drivers network wlan marvell88w8363 ;
 SubInclude HAIKU_TOP src add-ons kernel drivers network wlan ralinkwifi ;
+SubInclude HAIKU_TOP src add-ons kernel drivers network wlan realtekwifi ;
 SubInclude HAIKU_TOP src add-ons kernel drivers network wlan wavelanwifi ;
 
 # FreeBSD 11.2 drivers

src/add-ons/kernel/drivers/network/wlan/realtekwifi/Jamfile

@@ -0,0 +1,28 @@
+SubDir HAIKU_TOP src add-ons kernel drivers network wlan realtekwifi ;
+
+UseHeaders [ FDirName $(HAIKU_TOP) src libs compat freebsd11_network compat ]
+	: true ;
+UseHeaders [ FDirName $(HAIKU_TOP) src libs compat freebsd11_wlan ] : true ;
+UsePrivateHeaders net system ;
+UsePrivateKernelHeaders ;
+
+SubDirCcFlags [ FDefines _KERNEL=1 FBSD_DRIVER=1 _XOPEN_SOURCE ]
+	-Wno-format
+	-Wno-unused
+	-Wno-uninitialized ;
+
+UseHeaders [ FDirName $(SUBDIR) ] : true ;
+
+SEARCH_SOURCE += [ FDirName $(SUBDIR) dev rtwn ] ;
+
+KernelAddon realtekwifi :
+	if_rtwn.c
+	glue.c
+	:
+	libfreebsd11_wlan.a
+	libfreebsd11_network.a
+	;
+
+HAIKU_WIFI_FIRMWARE_PACKAGES on realtekwifi = rtwn-rtl8192cfw ;
+HAIKU_WIFI_FIRMWARE_ARCHIVES on realtekwifi = rtwn-rtl8192cfw.tgz ;
+HAIKU_WIFI_FIRMWARE_DO_EXTRACT on realtekwifi = true ;

src/add-ons/kernel/drivers/network/wlan/realtekwifi/glue.c

@@ -0,0 +1,54 @@
+/*
+ * Copyright 2018, Haiku, Inc. All rights reserved.
+ * Distributed under the terms of the MIT license.
+ */
+
+
+#include <sys/bus.h>
+#include <sys/kernel.h>
+
+#include <dev/pci/pcivar.h>
+
+#include <machine/bus.h>
+
+#include <net/if.h>
+#include <net/if_media.h>
+
+#include <net80211/ieee80211_var.h>
+#include <net80211/ieee80211_amrr.h>
+
+#include <dev/rtwn/if_rtwnreg.h>
+
+
+HAIKU_FBSD_WLAN_DRIVER_GLUE(realtekwifi, rtwn, pci)
+HAIKU_DRIVER_REQUIREMENTS(FBSD_WLAN);
+HAIKU_FIRMWARE_VERSION(0);
+HAIKU_FIRMWARE_NAME_MAP(2) = {
+	{"rtwn-rtl8192cfwU", "rtl8192cfwU.ucode"},
+	{"rtwn-rtl8192cfwU_B", "rtl8192cfwU_B.ucode"},
+};
+
+NO_HAIKU_FBSD_MII_DRIVER();
+NO_HAIKU_REENABLE_INTERRUPTS();
+
+void	 rtwn_write_4(struct rtwn_softc *, uint16_t, uint32_t);
+uint32_t rtwn_read_4(struct rtwn_softc *, uint16_t);
+
+int
+HAIKU_CHECK_DISABLE_INTERRUPTS(device_t dev)
+{
+	struct rtwn_softc* sc = (struct rtwn_softc*)device_get_softc(dev);
+	uint32_t status;
+
+	status = rtwn_read_4(sc, R92C_HISR);
+	if (status == 0 || status == 0xffffffff) {
+		return 0;
+	}
+
+	atomic_set((int32*)&sc->sc_intr_status, status);
+
+	/* Disable interrupts. */
+	rtwn_write_4(sc, R92C_HIMR, 0x00000000);
+
+	return 1;
+}