---

yaml
---
r: 259204
b: refs/heads/master
c: e8d548d
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ad6f2a8bc53b7cc104f481a648ce357528cc08eb
+refs/heads/master: e8d548d549688d335236f7f6f8bcee141a207ff8

trunk/drivers/usb/renesas_usbhs/Makefile

@@ -4,6 +4,6 @@
 
 obj-$(CONFIG_USB_RENESAS_USBHS)	+= renesas_usbhs.o
 
-renesas_usbhs-y			:= common.o mod.o pipe.o
+renesas_usbhs-y			:= common.o mod.o pipe.o fifo.o
 
 renesas_usbhs-$(CONFIG_USB_RENESAS_USBHS_UDC)	+= mod_gadget.o

trunk/drivers/usb/renesas_usbhs/common.h

@@ -24,6 +24,7 @@ struct usbhs_priv;
 
 #include "./mod.h"
 #include "./pipe.h"
+#include "./fifo.h"
 
 /*
  *

trunk/drivers/usb/renesas_usbhs/fifo.c

@@ -0,0 +1,211 @@
+/*
+ * Renesas USB driver
+ *
+ * Copyright (C) 2011 Renesas Solutions Corp.
+ * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+#include <linux/delay.h>
+#include <linux/io.h>
+#include "./common.h"
+#include "./pipe.h"
+
+/*
+ *		FIFO ctrl
+ */
+static void usbhsf_send_terminator(struct usbhs_pipe *pipe)
+{
+	struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+
+	usbhs_bset(priv, CFIFOCTR, BVAL, BVAL);
+}
+
+static int usbhsf_fifo_barrier(struct usbhs_priv *priv)
+{
+	int timeout = 1024;
+
+	do {
+		/* The FIFO port is accessible */
+		if (usbhs_read(priv, CFIFOCTR) & FRDY)
+			return 0;
+
+		udelay(10);
+	} while (timeout--);
+
+	return -EBUSY;
+}
+
+static void usbhsf_fifo_clear(struct usbhs_pipe *pipe)
+{
+	struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+
+	if (!usbhs_pipe_is_dcp(pipe))
+		usbhsf_fifo_barrier(priv);
+
+	usbhs_write(priv, CFIFOCTR, BCLR);
+}
+
+static int usbhsf_fifo_rcv_len(struct usbhs_priv *priv)
+{
+	return usbhs_read(priv, CFIFOCTR) & DTLN_MASK;
+}
+
+static int usbhsf_fifo_select(struct usbhs_pipe *pipe, int write)
+{
+	struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+	struct device *dev = usbhs_priv_to_dev(priv);
+	int timeout = 1024;
+	u16 mask = ((1 << 5) | 0xF);		/* mask of ISEL | CURPIPE */
+	u16 base = usbhs_pipe_number(pipe);	/* CURPIPE */
+
+	if (usbhs_pipe_is_dcp(pipe))
+		base |= (1 == write) << 5;	/* ISEL */
+
+	/* "base" will be used below  */
+	usbhs_write(priv, CFIFOSEL, base | MBW_32);
+
+	/* check ISEL and CURPIPE value */
+	while (timeout--) {
+		if (base == (mask & usbhs_read(priv, CFIFOSEL)))
+			return 0;
+		udelay(10);
+	}
+
+	dev_err(dev, "fifo select error\n");
+
+	return -EIO;
+}
+
+/*
+ *		PIO fifo functions
+ */
+int usbhs_fifo_prepare_write(struct usbhs_pipe *pipe)
+{
+	return usbhsf_fifo_select(pipe, 1);
+}
+
+int usbhs_fifo_write(struct usbhs_pipe *pipe, u8 *buf, int len)
+{
+	struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+	void __iomem *addr = priv->base + CFIFO;
+	int maxp = usbhs_pipe_get_maxpacket(pipe);
+	int total_len;
+	int i, ret;
+
+	ret = usbhs_pipe_is_accessible(pipe);
+	if (ret < 0)
+		return ret;
+
+	ret = usbhsf_fifo_select(pipe, 1);
+	if (ret < 0)
+		return ret;
+
+	ret = usbhsf_fifo_barrier(priv);
+	if (ret < 0)
+		return ret;
+
+	len = min(len, maxp);
+	total_len = len;
+
+	/*
+	 * FIXME
+	 *
+	 * 32-bit access only
+	 */
+	if (len >= 4 &&
+	    !((unsigned long)buf & 0x03)) {
+		iowrite32_rep(addr, buf, len / 4);
+		len %= 4;
+		buf += total_len - len;
+	}
+
+	/* the rest operation */
+	for (i = 0; i < len; i++)
+		iowrite8(buf[i], addr + (0x03 - (i & 0x03)));
+
+	if (total_len < maxp)
+		usbhsf_send_terminator(pipe);
+
+	return total_len;
+}
+
+int usbhs_fifo_prepare_read(struct usbhs_pipe *pipe)
+{
+	int ret;
+
+	/*
+	 * select pipe and enable it to prepare packet receive
+	 */
+	ret = usbhsf_fifo_select(pipe, 0);
+	if (ret < 0)
+		return ret;
+
+	usbhs_pipe_enable(pipe);
+
+	return ret;
+}
+
+int usbhs_fifo_read(struct usbhs_pipe *pipe, u8 *buf, int len)
+{
+	struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+	void __iomem *addr = priv->base + CFIFO;
+	int rcv_len;
+	int i, ret;
+	int total_len;
+	u32 data = 0;
+
+	ret = usbhsf_fifo_select(pipe, 0);
+	if (ret < 0)
+		return ret;
+
+	ret = usbhsf_fifo_barrier(priv);
+	if (ret < 0)
+		return ret;
+
+	rcv_len = usbhsf_fifo_rcv_len(priv);
+
+	/*
+	 * Buffer clear if Zero-Length packet
+	 *
+	 * see
+	 * "Operation" - "FIFO Buffer Memory" - "FIFO Port Function"
+	 */
+	if (0 == rcv_len) {
+		usbhsf_fifo_clear(pipe);
+		return 0;
+	}
+
+	len = min(rcv_len, len);
+	total_len = len;
+
+	/*
+	 * FIXME
+	 *
+	 * 32-bit access only
+	 */
+	if (len >= 4 &&
+	    !((unsigned long)buf & 0x03)) {
+		ioread32_rep(addr, buf, len / 4);
+		len %= 4;
+		buf += rcv_len - len;
+	}
+
+	/* the rest operation */
+	for (i = 0; i < len; i++) {
+		if (!(i & 0x03))
+			data = ioread32(addr);
+
+		buf[i] = (data >> ((i & 0x03) * 8)) & 0xff;
+	}
+
+	return total_len;
+}

trunk/drivers/usb/renesas_usbhs/fifo.h

@@ -0,0 +1,30 @@
+/*
+ * Renesas USB driver
+ *
+ * Copyright (C) 2011 Renesas Solutions Corp.
+ * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+#ifndef RENESAS_USB_FIFO_H
+#define RENESAS_USB_FIFO_H
+
+#include "common.h"
+
+/*
+ * fifo
+ */
+int usbhs_fifo_write(struct usbhs_pipe *pipe, u8 *buf, int len);
+int usbhs_fifo_read(struct usbhs_pipe *pipe, u8 *buf, int len);
+int usbhs_fifo_prepare_write(struct usbhs_pipe *pipe);
+int usbhs_fifo_prepare_read(struct usbhs_pipe *pipe);
+
+#endif /* RENESAS_USB_FIFO_H */

trunk/drivers/usb/renesas_usbhs/mod_gadget.c

@@ -376,7 +376,7 @@ static int usbhsg_try_run_send_packet(struct usbhsg_uep *uep,
 	 *  - after callback_update,
 	 *  - before queue_pop / stage_end
 	 */
-	usbhs_fifo_enable(pipe);
+	usbhs_pipe_enable(pipe);
 
 	/*
 	 * all data were sent ?
@@ -454,7 +454,7 @@ static int usbhsg_try_run_receive_packet(struct usbhsg_uep *uep,
 		int disable = 0;
 
 		uep->handler->irq_mask(uep, disable);
-		usbhs_fifo_disable(pipe);
+		usbhs_pipe_disable(pipe);
 		usbhsg_queue_pop(uep, ureq, 0);
 	}
 
@@ -546,9 +546,9 @@ static int usbhsg_recip_handler_std_clear_endpoint(struct usbhs_priv *priv,
 	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
 
 	if (!usbhsg_status_has(gpriv, USBHSG_STATUS_WEDGE)) {
-		usbhs_fifo_disable(pipe);
+		usbhs_pipe_disable(pipe);
 		usbhs_pipe_clear_sequence(pipe);
-		usbhs_fifo_enable(pipe);
+		usbhs_pipe_enable(pipe);
 	}
 
 	usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
@@ -695,7 +695,7 @@ static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv,
 		ret = gpriv->driver->setup(&gpriv->gadget, &ctrl);
 
 	if (ret < 0)
-		usbhs_fifo_stall(pipe);
+		usbhs_pipe_stall(pipe);
 
 	return ret;
 }
@@ -803,7 +803,7 @@ static int usbhsg_pipe_disable(struct usbhsg_uep *uep)
 	 *********  assume under spin lock  *********
 	 */
 
-	usbhs_fifo_disable(pipe);
+	usbhs_pipe_disable(pipe);
 
 	/*
 	 * disable pipe irq
@@ -1016,9 +1016,9 @@ static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge)
 			halt, usbhs_pipe_number(pipe));
 
 		if (halt)
-			usbhs_fifo_stall(pipe);
+			usbhs_pipe_stall(pipe);
 		else
-			usbhs_fifo_disable(pipe);
+			usbhs_pipe_disable(pipe);
 
 		if (halt && wedge)
 			usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE);