Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 1078 insertions, 0 deletions

diff --git a/kernel/drivers/usb/renesas_usbhs/mod_gadget.c b/kernel/drivers/usb/renesas_usbhs/mod_gadget.c
new file mode 100644
index 000000000..dc2aa3261
--- /dev/null
+++ b/kernel/drivers/usb/renesas_usbhs/mod_gadget.c
@@ -0,0 +1,1078 @@
+/*
+ * 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/dma-mapping.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+#include "common.h"
+
+/*
+ *		struct
+ */
+struct usbhsg_request {
+	struct usb_request	req;
+	struct usbhs_pkt	pkt;
+};
+
+#define EP_NAME_SIZE 8
+struct usbhsg_gpriv;
+struct usbhsg_uep {
+	struct usb_ep		 ep;
+	struct usbhs_pipe	*pipe;
+
+	char ep_name[EP_NAME_SIZE];
+
+	struct usbhsg_gpriv *gpriv;
+};
+
+struct usbhsg_gpriv {
+	struct usb_gadget	 gadget;
+	struct usbhs_mod	 mod;
+
+	struct usbhsg_uep	*uep;
+	int			 uep_size;
+
+	struct usb_gadget_driver	*driver;
+
+	u32	status;
+#define USBHSG_STATUS_STARTED		(1 << 0)
+#define USBHSG_STATUS_REGISTERD		(1 << 1)
+#define USBHSG_STATUS_WEDGE		(1 << 2)
+#define USBHSG_STATUS_SELF_POWERED	(1 << 3)
+#define USBHSG_STATUS_SOFT_CONNECT	(1 << 4)
+};
+
+struct usbhsg_recip_handle {
+	char *name;
+	int (*device)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
+		      struct usb_ctrlrequest *ctrl);
+	int (*interface)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
+			 struct usb_ctrlrequest *ctrl);
+	int (*endpoint)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
+			struct usb_ctrlrequest *ctrl);
+};
+
+/*
+ *		macro
+ */
+#define usbhsg_priv_to_gpriv(priv)			\
+	container_of(					\
+		usbhs_mod_get(priv, USBHS_GADGET),	\
+		struct usbhsg_gpriv, mod)
+
+#define __usbhsg_for_each_uep(start, pos, g, i)	\
+	for ((i) = start;					\
+	     ((i) < (g)->uep_size) && ((pos) = (g)->uep + (i));	\
+	     (i)++)
+
+#define usbhsg_for_each_uep(pos, gpriv, i)	\
+	__usbhsg_for_each_uep(1, pos, gpriv, i)
+
+#define usbhsg_for_each_uep_with_dcp(pos, gpriv, i)	\
+	__usbhsg_for_each_uep(0, pos, gpriv, i)
+
+#define usbhsg_gadget_to_gpriv(g)\
+	container_of(g, struct usbhsg_gpriv, gadget)
+
+#define usbhsg_req_to_ureq(r)\
+	container_of(r, struct usbhsg_request, req)
+
+#define usbhsg_ep_to_uep(e)		container_of(e, struct usbhsg_uep, ep)
+#define usbhsg_gpriv_to_dev(gp)		usbhs_priv_to_dev((gp)->mod.priv)
+#define usbhsg_gpriv_to_priv(gp)	((gp)->mod.priv)
+#define usbhsg_gpriv_to_dcp(gp)		((gp)->uep)
+#define usbhsg_gpriv_to_nth_uep(gp, i)	((gp)->uep + i)
+#define usbhsg_uep_to_gpriv(u)		((u)->gpriv)
+#define usbhsg_uep_to_pipe(u)		((u)->pipe)
+#define usbhsg_pipe_to_uep(p)		((p)->mod_private)
+#define usbhsg_is_dcp(u)		((u) == usbhsg_gpriv_to_dcp((u)->gpriv))
+
+#define usbhsg_ureq_to_pkt(u)		(&(u)->pkt)
+#define usbhsg_pkt_to_ureq(i)	\
+	container_of(i, struct usbhsg_request, pkt)
+
+#define usbhsg_is_not_connected(gp) ((gp)->gadget.speed == USB_SPEED_UNKNOWN)
+
+/* status */
+#define usbhsg_status_init(gp)   do {(gp)->status = 0; } while (0)
+#define usbhsg_status_set(gp, b) (gp->status |=  b)
+#define usbhsg_status_clr(gp, b) (gp->status &= ~b)
+#define usbhsg_status_has(gp, b) (gp->status &   b)
+
+/*
+ *		queue push/pop
+ */
+static void __usbhsg_queue_pop(struct usbhsg_uep *uep,
+			       struct usbhsg_request *ureq,
+			       int status)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
+	struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
+
+	dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe));
+
+	ureq->req.status = status;
+	spin_unlock(usbhs_priv_to_lock(priv));
+	usb_gadget_giveback_request(&uep->ep, &ureq->req);
+	spin_lock(usbhs_priv_to_lock(priv));
+}
+
+static void usbhsg_queue_pop(struct usbhsg_uep *uep,
+			     struct usbhsg_request *ureq,
+			     int status)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+	struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
+	unsigned long flags;
+
+	usbhs_lock(priv, flags);
+	__usbhsg_queue_pop(uep, ureq, status);
+	usbhs_unlock(priv, flags);
+}
+
+static void usbhsg_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt)
+{
+	struct usbhs_pipe *pipe = pkt->pipe;
+	struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
+	struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
+
+	ureq->req.actual = pkt->actual;
+
+	usbhsg_queue_pop(uep, ureq, 0);
+}
+
+static void usbhsg_queue_push(struct usbhsg_uep *uep,
+			      struct usbhsg_request *ureq)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
+	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+	struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq);
+	struct usb_request *req = &ureq->req;
+
+	req->actual = 0;
+	req->status = -EINPROGRESS;
+	usbhs_pkt_push(pipe, pkt, usbhsg_queue_done,
+		       req->buf, req->length, req->zero, -1);
+	usbhs_pkt_start(pipe);
+
+	dev_dbg(dev, "pipe %d : queue push (%d)\n",
+		usbhs_pipe_number(pipe),
+		req->length);
+}
+
+/*
+ *		dma map/unmap
+ */
+static int usbhsg_dma_map_ctrl(struct usbhs_pkt *pkt, int map)
+{
+	struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
+	struct usb_request *req = &ureq->req;
+	struct usbhs_pipe *pipe = pkt->pipe;
+	struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
+	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+	enum dma_data_direction dir;
+	int ret = 0;
+
+	dir = usbhs_pipe_is_dir_host(pipe);
+
+	if (map) {
+		/* it can not use scatter/gather */
+		WARN_ON(req->num_sgs);
+
+		ret = usb_gadget_map_request(&gpriv->gadget, req, dir);
+		if (ret < 0)
+			return ret;
+
+		pkt->dma = req->dma;
+	} else {
+		usb_gadget_unmap_request(&gpriv->gadget, req, dir);
+	}
+
+	return ret;
+}
+
+/*
+ *		USB_TYPE_STANDARD / clear feature functions
+ */
+static int usbhsg_recip_handler_std_control_done(struct usbhs_priv *priv,
+						 struct usbhsg_uep *uep,
+						 struct usb_ctrlrequest *ctrl)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
+	struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
+	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
+
+	usbhs_dcp_control_transfer_done(pipe);
+
+	return 0;
+}
+
+static int usbhsg_recip_handler_std_clear_endpoint(struct usbhs_priv *priv,
+						   struct usbhsg_uep *uep,
+						   struct usb_ctrlrequest *ctrl)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+
+	if (!usbhsg_status_has(gpriv, USBHSG_STATUS_WEDGE)) {
+		usbhs_pipe_disable(pipe);
+		usbhs_pipe_sequence_data0(pipe);
+		usbhs_pipe_enable(pipe);
+	}
+
+	usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
+
+	usbhs_pkt_start(pipe);
+
+	return 0;
+}
+
+static struct usbhsg_recip_handle req_clear_feature = {
+	.name		= "clear feature",
+	.device		= usbhsg_recip_handler_std_control_done,
+	.interface	= usbhsg_recip_handler_std_control_done,
+	.endpoint	= usbhsg_recip_handler_std_clear_endpoint,
+};
+
+/*
+ *		USB_TYPE_STANDARD / set feature functions
+ */
+static int usbhsg_recip_handler_std_set_device(struct usbhs_priv *priv,
+						 struct usbhsg_uep *uep,
+						 struct usb_ctrlrequest *ctrl)
+{
+	switch (le16_to_cpu(ctrl->wValue)) {
+	case USB_DEVICE_TEST_MODE:
+		usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
+		udelay(100);
+		usbhs_sys_set_test_mode(priv, le16_to_cpu(ctrl->wIndex >> 8));
+		break;
+	default:
+		usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
+		break;
+	}
+
+	return 0;
+}
+
+static int usbhsg_recip_handler_std_set_endpoint(struct usbhs_priv *priv,
+						 struct usbhsg_uep *uep,
+						 struct usb_ctrlrequest *ctrl)
+{
+	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+
+	usbhs_pipe_stall(pipe);
+
+	usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
+
+	return 0;
+}
+
+static struct usbhsg_recip_handle req_set_feature = {
+	.name		= "set feature",
+	.device		= usbhsg_recip_handler_std_set_device,
+	.interface	= usbhsg_recip_handler_std_control_done,
+	.endpoint	= usbhsg_recip_handler_std_set_endpoint,
+};
+
+/*
+ *		USB_TYPE_STANDARD / get status functions
+ */
+static void __usbhsg_recip_send_complete(struct usb_ep *ep,
+					 struct usb_request *req)
+{
+	struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
+
+	/* free allocated recip-buffer/usb_request */
+	kfree(ureq->pkt.buf);
+	usb_ep_free_request(ep, req);
+}
+
+static void __usbhsg_recip_send_status(struct usbhsg_gpriv *gpriv,
+				       unsigned short status)
+{
+	struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
+	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
+	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
+	struct usb_request *req;
+	unsigned short *buf;
+
+	/* alloc new usb_request for recip */
+	req = usb_ep_alloc_request(&dcp->ep, GFP_ATOMIC);
+	if (!req) {
+		dev_err(dev, "recip request allocation fail\n");
+		return;
+	}
+
+	/* alloc recip data buffer */
+	buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
+	if (!buf) {
+		usb_ep_free_request(&dcp->ep, req);
+		dev_err(dev, "recip data allocation fail\n");
+		return;
+	}
+
+	/* recip data is status */
+	*buf = cpu_to_le16(status);
+
+	/* allocated usb_request/buffer will be freed */
+	req->complete	= __usbhsg_recip_send_complete;
+	req->buf	= buf;
+	req->length	= sizeof(*buf);
+	req->zero	= 0;
+
+	/* push packet */
+	pipe->handler = &usbhs_fifo_pio_push_handler;
+	usbhsg_queue_push(dcp, usbhsg_req_to_ureq(req));
+}
+
+static int usbhsg_recip_handler_std_get_device(struct usbhs_priv *priv,
+					       struct usbhsg_uep *uep,
+					       struct usb_ctrlrequest *ctrl)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+	unsigned short status = 0;
+
+	if (usbhsg_status_has(gpriv, USBHSG_STATUS_SELF_POWERED))
+		status = 1 << USB_DEVICE_SELF_POWERED;
+
+	__usbhsg_recip_send_status(gpriv, status);
+
+	return 0;
+}
+
+static int usbhsg_recip_handler_std_get_interface(struct usbhs_priv *priv,
+						  struct usbhsg_uep *uep,
+						  struct usb_ctrlrequest *ctrl)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+	unsigned short status = 0;
+
+	__usbhsg_recip_send_status(gpriv, status);
+
+	return 0;
+}
+
+static int usbhsg_recip_handler_std_get_endpoint(struct usbhs_priv *priv,
+						 struct usbhsg_uep *uep,
+						 struct usb_ctrlrequest *ctrl)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+	unsigned short status = 0;
+
+	if (usbhs_pipe_is_stall(pipe))
+		status = 1 << USB_ENDPOINT_HALT;
+
+	__usbhsg_recip_send_status(gpriv, status);
+
+	return 0;
+}
+
+static struct usbhsg_recip_handle req_get_status = {
+	.name		= "get status",
+	.device		= usbhsg_recip_handler_std_get_device,
+	.interface	= usbhsg_recip_handler_std_get_interface,
+	.endpoint	= usbhsg_recip_handler_std_get_endpoint,
+};
+
+/*
+ *		USB_TYPE handler
+ */
+static int usbhsg_recip_run_handle(struct usbhs_priv *priv,
+				   struct usbhsg_recip_handle *handler,
+				   struct usb_ctrlrequest *ctrl)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
+	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
+	struct usbhsg_uep *uep;
+	struct usbhs_pipe *pipe;
+	int recip = ctrl->bRequestType & USB_RECIP_MASK;
+	int nth = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK;
+	int ret = 0;
+	int (*func)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
+		    struct usb_ctrlrequest *ctrl);
+	char *msg;
+
+	uep = usbhsg_gpriv_to_nth_uep(gpriv, nth);
+	pipe = usbhsg_uep_to_pipe(uep);
+	if (!pipe) {
+		dev_err(dev, "wrong recip request\n");
+		return -EINVAL;
+	}
+
+	switch (recip) {
+	case USB_RECIP_DEVICE:
+		msg	= "DEVICE";
+		func	= handler->device;
+		break;
+	case USB_RECIP_INTERFACE:
+		msg	= "INTERFACE";
+		func	= handler->interface;
+		break;
+	case USB_RECIP_ENDPOINT:
+		msg	= "ENDPOINT";
+		func	= handler->endpoint;
+		break;
+	default:
+		dev_warn(dev, "unsupported RECIP(%d)\n", recip);
+		func = NULL;
+		ret = -EINVAL;
+	}
+
+	if (func) {
+		dev_dbg(dev, "%s (pipe %d :%s)\n", handler->name, nth, msg);
+		ret = func(priv, uep, ctrl);
+	}
+
+	return ret;
+}
+
+/*
+ *		irq functions
+ *
+ * it will be called from usbhs_interrupt
+ */
+static int usbhsg_irq_dev_state(struct usbhs_priv *priv,
+				struct usbhs_irq_state *irq_state)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
+	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
+
+	gpriv->gadget.speed = usbhs_bus_get_speed(priv);
+
+	dev_dbg(dev, "state = %x : speed : %d\n",
+		usbhs_status_get_device_state(irq_state),
+		gpriv->gadget.speed);
+
+	return 0;
+}
+
+static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv,
+				 struct usbhs_irq_state *irq_state)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
+	struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
+	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
+	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
+	struct usb_ctrlrequest ctrl;
+	struct usbhsg_recip_handle *recip_handler = NULL;
+	int stage = usbhs_status_get_ctrl_stage(irq_state);
+	int ret = 0;
+
+	dev_dbg(dev, "stage = %d\n", stage);
+
+	/*
+	 * see Manual
+	 *
+	 *  "Operation"
+	 *  - "Interrupt Function"
+	 *    - "Control Transfer Stage Transition Interrupt"
+	 *      - Fig. "Control Transfer Stage Transitions"
+	 */
+
+	switch (stage) {
+	case READ_DATA_STAGE:
+		pipe->handler = &usbhs_fifo_pio_push_handler;
+		break;
+	case WRITE_DATA_STAGE:
+		pipe->handler = &usbhs_fifo_pio_pop_handler;
+		break;
+	case NODATA_STATUS_STAGE:
+		pipe->handler = &usbhs_ctrl_stage_end_handler;
+		break;
+	case READ_STATUS_STAGE:
+	case WRITE_STATUS_STAGE:
+		usbhs_dcp_control_transfer_done(pipe);
+	default:
+		return ret;
+	}
+
+	/*
+	 * get usb request
+	 */
+	usbhs_usbreq_get_val(priv, &ctrl);
+
+	switch (ctrl.bRequestType & USB_TYPE_MASK) {
+	case USB_TYPE_STANDARD:
+		switch (ctrl.bRequest) {
+		case USB_REQ_CLEAR_FEATURE:
+			recip_handler = &req_clear_feature;
+			break;
+		case USB_REQ_SET_FEATURE:
+			recip_handler = &req_set_feature;
+			break;
+		case USB_REQ_GET_STATUS:
+			recip_handler = &req_get_status;
+			break;
+		}
+	}
+
+	/*
+	 * setup stage / run recip
+	 */
+	if (recip_handler)
+		ret = usbhsg_recip_run_handle(priv, recip_handler, &ctrl);
+	else
+		ret = gpriv->driver->setup(&gpriv->gadget, &ctrl);
+
+	if (ret < 0)
+		usbhs_pipe_stall(pipe);
+
+	return ret;
+}
+
+/*
+ *
+ *		usb_dcp_ops
+ *
+ */
+static int usbhsg_pipe_disable(struct usbhsg_uep *uep)
+{
+	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+	struct usbhs_pkt *pkt;
+
+	while (1) {
+		pkt = usbhs_pkt_pop(pipe, NULL);
+		if (!pkt)
+			break;
+
+		usbhsg_queue_pop(uep, usbhsg_pkt_to_ureq(pkt), -ECONNRESET);
+	}
+
+	usbhs_pipe_disable(pipe);
+
+	return 0;
+}
+
+/*
+ *
+ *		usb_ep_ops
+ *
+ */
+static int usbhsg_ep_enable(struct usb_ep *ep,
+			 const struct usb_endpoint_descriptor *desc)
+{
+	struct usbhsg_uep *uep   = usbhsg_ep_to_uep(ep);
+	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+	struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
+	struct usbhs_pipe *pipe;
+	int ret = -EIO;
+
+	/*
+	 * if it already have pipe,
+	 * nothing to do
+	 */
+	if (uep->pipe) {
+		usbhs_pipe_clear(uep->pipe);
+		usbhs_pipe_sequence_data0(uep->pipe);
+		return 0;
+	}
+
+	pipe = usbhs_pipe_malloc(priv,
+				 usb_endpoint_type(desc),
+				 usb_endpoint_dir_in(desc));
+	if (pipe) {
+		uep->pipe		= pipe;
+		pipe->mod_private	= uep;
+
+		/* set epnum / maxp */
+		usbhs_pipe_config_update(pipe, 0,
+					 usb_endpoint_num(desc),
+					 usb_endpoint_maxp(desc));
+
+		/*
+		 * usbhs_fifo_dma_push/pop_handler try to
+		 * use dmaengine if possible.
+		 * It will use pio handler if impossible.
+		 */
+		if (usb_endpoint_dir_in(desc))
+			pipe->handler = &usbhs_fifo_dma_push_handler;
+		else
+			pipe->handler = &usbhs_fifo_dma_pop_handler;
+
+		ret = 0;
+	}
+
+	return ret;
+}
+
+static int usbhsg_ep_disable(struct usb_ep *ep)
+{
+	struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
+	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+
+	if (!pipe)
+		return -EINVAL;
+
+	usbhsg_pipe_disable(uep);
+	usbhs_pipe_free(pipe);
+
+	uep->pipe->mod_private	= NULL;
+	uep->pipe		= NULL;
+
+	return 0;
+}
+
+static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep,
+						   gfp_t gfp_flags)
+{
+	struct usbhsg_request *ureq;
+
+	ureq = kzalloc(sizeof *ureq, gfp_flags);
+	if (!ureq)
+		return NULL;
+
+	usbhs_pkt_init(usbhsg_ureq_to_pkt(ureq));
+
+	return &ureq->req;
+}
+
+static void usbhsg_ep_free_request(struct usb_ep *ep,
+				   struct usb_request *req)
+{
+	struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
+
+	WARN_ON(!list_empty(&ureq->pkt.node));
+	kfree(ureq);
+}
+
+static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req,
+			  gfp_t gfp_flags)
+{
+	struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
+	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+	struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
+	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+
+	/* param check */
+	if (usbhsg_is_not_connected(gpriv)	||
+	    unlikely(!gpriv->driver)		||
+	    unlikely(!pipe))
+		return -ESHUTDOWN;
+
+	usbhsg_queue_push(uep, ureq);
+
+	return 0;
+}
+
+static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req)
+{
+	struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
+	struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
+	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+
+	usbhs_pkt_pop(pipe, usbhsg_ureq_to_pkt(ureq));
+	usbhsg_queue_pop(uep, ureq, -ECONNRESET);
+
+	return 0;
+}
+
+static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge)
+{
+	struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
+	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+	struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
+	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
+	unsigned long flags;
+
+	usbhsg_pipe_disable(uep);
+
+	dev_dbg(dev, "set halt %d (pipe %d)\n",
+		halt, usbhs_pipe_number(pipe));
+
+	/********************  spin lock ********************/
+	usbhs_lock(priv, flags);
+
+	if (halt)
+		usbhs_pipe_stall(pipe);
+	else
+		usbhs_pipe_disable(pipe);
+
+	if (halt && wedge)
+		usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE);
+	else
+		usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE);
+
+	usbhs_unlock(priv, flags);
+	/********************  spin unlock ******************/
+
+	return 0;
+}
+
+static int usbhsg_ep_set_halt(struct usb_ep *ep, int value)
+{
+	return __usbhsg_ep_set_halt_wedge(ep, value, 0);
+}
+
+static int usbhsg_ep_set_wedge(struct usb_ep *ep)
+{
+	return __usbhsg_ep_set_halt_wedge(ep, 1, 1);
+}
+
+static struct usb_ep_ops usbhsg_ep_ops = {
+	.enable		= usbhsg_ep_enable,
+	.disable	= usbhsg_ep_disable,
+
+	.alloc_request	= usbhsg_ep_alloc_request,
+	.free_request	= usbhsg_ep_free_request,
+
+	.queue		= usbhsg_ep_queue,
+	.dequeue	= usbhsg_ep_dequeue,
+
+	.set_halt	= usbhsg_ep_set_halt,
+	.set_wedge	= usbhsg_ep_set_wedge,
+};
+
+/*
+ *		pullup control
+ */
+static int usbhsg_can_pullup(struct usbhs_priv *priv)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
+
+	return gpriv->driver &&
+	       usbhsg_status_has(gpriv, USBHSG_STATUS_SOFT_CONNECT);
+}
+
+static void usbhsg_update_pullup(struct usbhs_priv *priv)
+{
+	if (usbhsg_can_pullup(priv))
+		usbhs_sys_function_pullup(priv, 1);
+	else
+		usbhs_sys_function_pullup(priv, 0);
+}
+
+/*
+ *		usb module start/end
+ */
+static int usbhsg_try_start(struct usbhs_priv *priv, u32 status)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
+	struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
+	struct usbhs_mod *mod = usbhs_mod_get_current(priv);
+	struct device *dev = usbhs_priv_to_dev(priv);
+	unsigned long flags;
+	int ret = 0;
+
+	/********************  spin lock ********************/
+	usbhs_lock(priv, flags);
+
+	usbhsg_status_set(gpriv, status);
+	if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
+	      usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)))
+		ret = -1; /* not ready */
+
+	usbhs_unlock(priv, flags);
+	/********************  spin unlock ********************/
+
+	if (ret < 0)
+		return 0; /* not ready is not error */
+
+	/*
+	 * enable interrupt and systems if ready
+	 */
+	dev_dbg(dev, "start gadget\n");
+
+	/*
+	 * pipe initialize and enable DCP
+	 */
+	usbhs_fifo_init(priv);
+	usbhs_pipe_init(priv,
+			usbhsg_dma_map_ctrl);
+
+	/* dcp init instead of usbhsg_ep_enable() */
+	dcp->pipe		= usbhs_dcp_malloc(priv);
+	dcp->pipe->mod_private	= dcp;
+	usbhs_pipe_config_update(dcp->pipe, 0, 0, 64);
+
+	/*
+	 * system config enble
+	 * - HI speed
+	 * - function
+	 * - usb module
+	 */
+	usbhs_sys_function_ctrl(priv, 1);
+	usbhsg_update_pullup(priv);
+
+	/*
+	 * enable irq callback
+	 */
+	mod->irq_dev_state	= usbhsg_irq_dev_state;
+	mod->irq_ctrl_stage	= usbhsg_irq_ctrl_stage;
+	usbhs_irq_callback_update(priv, mod);
+
+	return 0;
+}
+
+static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
+	struct usbhs_mod *mod = usbhs_mod_get_current(priv);
+	struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
+	struct device *dev = usbhs_priv_to_dev(priv);
+	unsigned long flags;
+	int ret = 0;
+
+	/********************  spin lock ********************/
+	usbhs_lock(priv, flags);
+
+	usbhsg_status_clr(gpriv, status);
+	if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
+	    !usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))
+		ret = -1; /* already done */
+
+	usbhs_unlock(priv, flags);
+	/********************  spin unlock ********************/
+
+	if (ret < 0)
+		return 0; /* already done is not error */
+
+	/*
+	 * disable interrupt and systems if 1st try
+	 */
+	usbhs_fifo_quit(priv);
+
+	/* disable all irq */
+	mod->irq_dev_state	= NULL;
+	mod->irq_ctrl_stage	= NULL;
+	usbhs_irq_callback_update(priv, mod);
+
+	gpriv->gadget.speed = USB_SPEED_UNKNOWN;
+
+	/* disable sys */
+	usbhs_sys_set_test_mode(priv, 0);
+	usbhs_sys_function_ctrl(priv, 0);
+
+	usbhsg_ep_disable(&dcp->ep);
+
+	dev_dbg(dev, "stop gadget\n");
+
+	return 0;
+}
+
+/*
+ *
+ *		linux usb function
+ *
+ */
+static int usbhsg_gadget_start(struct usb_gadget *gadget,
+		struct usb_gadget_driver *driver)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
+	struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
+
+	if (!driver		||
+	    !driver->setup	||
+	    driver->max_speed < USB_SPEED_FULL)
+		return -EINVAL;
+
+	/* first hook up the driver ... */
+	gpriv->driver = driver;
+
+	return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD);
+}
+
+static int usbhsg_gadget_stop(struct usb_gadget *gadget)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
+	struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
+
+	usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD);
+	gpriv->driver = NULL;
+
+	return 0;
+}
+
+/*
+ *		usb gadget ops
+ */
+static int usbhsg_get_frame(struct usb_gadget *gadget)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
+	struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
+
+	return usbhs_frame_get_num(priv);
+}
+
+static int usbhsg_pullup(struct usb_gadget *gadget, int is_on)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
+	struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
+	unsigned long flags;
+
+	usbhs_lock(priv, flags);
+	if (is_on)
+		usbhsg_status_set(gpriv, USBHSG_STATUS_SOFT_CONNECT);
+	else
+		usbhsg_status_clr(gpriv, USBHSG_STATUS_SOFT_CONNECT);
+	usbhsg_update_pullup(priv);
+	usbhs_unlock(priv, flags);
+
+	return 0;
+}
+
+static int usbhsg_set_selfpowered(struct usb_gadget *gadget, int is_self)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
+
+	if (is_self)
+		usbhsg_status_set(gpriv, USBHSG_STATUS_SELF_POWERED);
+	else
+		usbhsg_status_clr(gpriv, USBHSG_STATUS_SELF_POWERED);
+
+	gadget->is_selfpowered = (is_self != 0);
+
+	return 0;
+}
+
+static const struct usb_gadget_ops usbhsg_gadget_ops = {
+	.get_frame		= usbhsg_get_frame,
+	.set_selfpowered	= usbhsg_set_selfpowered,
+	.udc_start		= usbhsg_gadget_start,
+	.udc_stop		= usbhsg_gadget_stop,
+	.pullup			= usbhsg_pullup,
+};
+
+static int usbhsg_start(struct usbhs_priv *priv)
+{
+	return usbhsg_try_start(priv, USBHSG_STATUS_STARTED);
+}
+
+static int usbhsg_stop(struct usbhs_priv *priv)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
+
+	/* cable disconnect */
+	if (gpriv->driver &&
+	    gpriv->driver->disconnect)
+		gpriv->driver->disconnect(&gpriv->gadget);
+
+	return usbhsg_try_stop(priv, USBHSG_STATUS_STARTED);
+}
+
+int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
+{
+	struct usbhsg_gpriv *gpriv;
+	struct usbhsg_uep *uep;
+	struct device *dev = usbhs_priv_to_dev(priv);
+	int pipe_size = usbhs_get_dparam(priv, pipe_size);
+	int i;
+	int ret;
+
+	gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL);
+	if (!gpriv) {
+		dev_err(dev, "Could not allocate gadget priv\n");
+		return -ENOMEM;
+	}
+
+	uep = kzalloc(sizeof(struct usbhsg_uep) * pipe_size, GFP_KERNEL);
+	if (!uep) {
+		dev_err(dev, "Could not allocate ep\n");
+		ret = -ENOMEM;
+		goto usbhs_mod_gadget_probe_err_gpriv;
+	}
+
+	/*
+	 * CAUTION
+	 *
+	 * There is no guarantee that it is possible to access usb module here.
+	 * Don't accesses to it.
+	 * The accesse will be enable after "usbhsg_start"
+	 */
+
+	/*
+	 * register itself
+	 */
+	usbhs_mod_register(priv, &gpriv->mod, USBHS_GADGET);
+
+	/* init gpriv */
+	gpriv->mod.name		= "gadget";
+	gpriv->mod.start	= usbhsg_start;
+	gpriv->mod.stop		= usbhsg_stop;
+	gpriv->uep		= uep;
+	gpriv->uep_size		= pipe_size;
+	usbhsg_status_init(gpriv);
+
+	/*
+	 * init gadget
+	 */
+	gpriv->gadget.dev.parent	= dev;
+	gpriv->gadget.name		= "renesas_usbhs_udc";
+	gpriv->gadget.ops		= &usbhsg_gadget_ops;
+	gpriv->gadget.max_speed		= USB_SPEED_HIGH;
+
+	INIT_LIST_HEAD(&gpriv->gadget.ep_list);
+
+	/*
+	 * init usb_ep
+	 */
+	usbhsg_for_each_uep_with_dcp(uep, gpriv, i) {
+		uep->gpriv	= gpriv;
+		uep->pipe	= NULL;
+		snprintf(uep->ep_name, EP_NAME_SIZE, "ep%d", i);
+
+		uep->ep.name		= uep->ep_name;
+		uep->ep.ops		= &usbhsg_ep_ops;
+		INIT_LIST_HEAD(&uep->ep.ep_list);
+
+		/* init DCP */
+		if (usbhsg_is_dcp(uep)) {
+			gpriv->gadget.ep0 = &uep->ep;
+			usb_ep_set_maxpacket_limit(&uep->ep, 64);
+		}
+		/* init normal pipe */
+		else {
+			usb_ep_set_maxpacket_limit(&uep->ep, 512);
+			list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list);
+		}
+	}
+
+	ret = usb_add_gadget_udc(dev, &gpriv->gadget);
+	if (ret)
+		goto err_add_udc;
+
+
+	dev_info(dev, "gadget probed\n");
+
+	return 0;
+
+err_add_udc:
+	kfree(gpriv->uep);
+
+usbhs_mod_gadget_probe_err_gpriv:
+	kfree(gpriv);
+
+	return ret;
+}
+
+void usbhs_mod_gadget_remove(struct usbhs_priv *priv)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
+
+	usb_del_gadget_udc(&gpriv->gadget);
+
+	kfree(gpriv->uep);
+	kfree(gpriv);
+}