[PATCH 1/3] Import r92_llt.c from FreeBSD.

[Sichen Zhao]

---
 freebsd/sys/dev/rtwn/rtl8192c/r92c_llt.c | 75 ++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 freebsd/sys/dev/rtwn/rtl8192c/r92c_llt.c

diff --git a/freebsd/sys/dev/rtwn/rtl8192c/r92c_llt.c b/freebsd/sys/dev/rtwn/rtl8192c/r92c_llt.c
new file mode 100644
index 0000000..595d79e
--- /dev/null
+++ b/freebsd/sys/dev/rtwn/rtl8192c/r92c_llt.c
@@ -0,0 +1,75 @@
+#include <machine/rtems-bsd-kernel-space.h>
+
+/*	$OpenBSD: if_urtwn.c,v 1.16 2011/02/10 17:26:40 jakemsr Exp $	*/
+
+/*-
+ * Copyright (c) 2010 Damien Bergamini <damien.bergamini at free.fr>
+ * Copyright (c) 2014 Kevin Lo <kevlo at FreeBSD.org>
+ * Copyright (c) 2015-2016 Andriy Voskoboinyk <avos at FreeBSD.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <rtems/bsd/local/opt_wlan.h>
+
+#include <sys/param.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/mbuf.h>
+#include <sys/kernel.h>
+#include <sys/socket.h>
+#include <sys/systm.h>
+#include <sys/malloc.h>
+#include <sys/queue.h>
+#include <sys/taskqueue.h>
+#include <sys/bus.h>
+#include <sys/endian.h>
+#include <sys/linker.h>
+
+#include <net/if.h>
+#include <net/ethernet.h>
+#include <net/if_media.h>
+
+#include <net80211/ieee80211_var.h>
+#include <net80211/ieee80211_radiotap.h>
+
+#include <dev/rtwn/if_rtwnreg.h>
+#include <dev/rtwn/if_rtwnvar.h>
+
+#include <dev/rtwn/rtl8192c/r92c.h>
+#include <dev/rtwn/rtl8192c/r92c_reg.h>
+#include <dev/rtwn/rtl8192c/r92c_var.h>
+
+int
+r92c_llt_write(struct rtwn_softc *sc, uint32_t addr, uint32_t data)
+{
+	int ntries, error;
+
+	error = rtwn_write_4(sc, R92C_LLT_INIT,
+	    SM(R92C_LLT_INIT_OP, R92C_LLT_INIT_OP_WRITE) |
+	    SM(R92C_LLT_INIT_ADDR, addr) |
+	    SM(R92C_LLT_INIT_DATA, data));
+	if (error != 0)
+		return (error);
+	/* Wait for write operation to complete. */
+	for (ntries = 0; ntries < 20; ntries++) {
+		if (MS(rtwn_read_4(sc, R92C_LLT_INIT), R92C_LLT_INIT_OP) ==
+		    R92C_LLT_INIT_OP_NO_ACTIVE)
+			return (0);
+		rtwn_delay(sc, 10);
+	}
+	return (ETIMEDOUT);
+}
-- 
2.7.4