summary refs log tree commit diff
path: root/drivers/usb/renesas_usbhs
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/usb/renesas_usbhs')
-rw-r--r--drivers/usb/renesas_usbhs/common.h1
-rw-r--r--drivers/usb/renesas_usbhs/fifo.c57
-rw-r--r--drivers/usb/renesas_usbhs/fifo.h21
-rw-r--r--drivers/usb/renesas_usbhs/mod_gadget.c115
-rw-r--r--drivers/usb/renesas_usbhs/pipe.c8
-rw-r--r--drivers/usb/renesas_usbhs/pipe.h8
6 files changed, 150 insertions, 60 deletions
diff --git a/drivers/usb/renesas_usbhs/common.h b/drivers/usb/renesas_usbhs/common.h
index 24f756024bed..0aadcb402764 100644
--- a/drivers/usb/renesas_usbhs/common.h
+++ b/drivers/usb/renesas_usbhs/common.h
@@ -24,7 +24,6 @@ struct usbhs_priv;
 
 #include "./mod.h"
 #include "./pipe.h"
-#include "./fifo.h"
 
 /*
  *
diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
index 3fd3adf90541..098388489813 100644
--- a/drivers/usb/renesas_usbhs/fifo.c
+++ b/drivers/usb/renesas_usbhs/fifo.c
@@ -20,6 +20,20 @@
 #include "./pipe.h"
 
 /*
+ *		packet info function
+ */
+void usbhs_pkt_update(struct usbhs_pkt *pkt,
+		      struct usbhs_pipe *pipe,
+		      void *buf, int len)
+{
+	pkt->pipe	= pipe;
+	pkt->buf	= buf;
+	pkt->length	= len;
+	pkt->actual	= 0;
+	pkt->maxp	= 0;
+}
+
+/*
  *		FIFO ctrl
  */
 static void usbhsf_send_terminator(struct usbhs_pipe *pipe)
@@ -93,13 +107,16 @@ 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)
+int usbhs_fifo_write(struct usbhs_pkt *pkt)
 {
+	struct usbhs_pipe *pipe = pkt->pipe;
 	struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+	struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
 	void __iomem *addr = priv->base + CFIFO;
 	int maxp = usbhs_pipe_get_maxpacket(pipe);
 	int total_len;
-	int i, ret;
+	u8 *buf = pkt->buf;
+	int i, ret, len;
 
 	ret = usbhs_pipe_is_accessible(pipe);
 	if (ret < 0)
@@ -113,7 +130,7 @@ int usbhs_fifo_write(struct usbhs_pipe *pipe, u8 *buf, int len)
 	if (ret < 0)
 		return ret;
 
-	len = min(len, maxp);
+	len = min(pkt->length, maxp);
 	total_len = len;
 
 	/*
@@ -135,7 +152,16 @@ int usbhs_fifo_write(struct usbhs_pipe *pipe, u8 *buf, int len)
 	if (total_len < maxp)
 		usbhsf_send_terminator(pipe);
 
-	return total_len;
+	usbhs_pipe_enable(pipe);
+
+	/* update pkt */
+	if (info->tx_done) {
+		pkt->actual	= total_len;
+		pkt->maxp	= maxp;
+		info->tx_done(pkt);
+	}
+
+	return 0;
 }
 
 int usbhs_fifo_prepare_read(struct usbhs_pipe *pipe)
@@ -154,13 +180,16 @@ int usbhs_fifo_prepare_read(struct usbhs_pipe *pipe)
 	return ret;
 }
 
-int usbhs_fifo_read(struct usbhs_pipe *pipe, u8 *buf, int len)
+int usbhs_fifo_read(struct usbhs_pkt *pkt)
 {
+	struct usbhs_pipe *pipe = pkt->pipe;
 	struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+	struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
 	void __iomem *addr = priv->base + CFIFO;
-	int rcv_len;
+	u8 *buf = pkt->buf;
+	int rcv_len, len;
 	int i, ret;
-	int total_len;
+	int total_len = 0;
 	u32 data = 0;
 
 	ret = usbhsf_fifo_select(pipe, 0);
@@ -181,10 +210,10 @@ int usbhs_fifo_read(struct usbhs_pipe *pipe, u8 *buf, int len)
 	 */
 	if (0 == rcv_len) {
 		usbhsf_fifo_clear(pipe);
-		return 0;
+		goto usbhs_fifo_read_end;
 	}
 
-	len = min(rcv_len, len);
+	len = min(rcv_len, pkt->length);
 	total_len = len;
 
 	/*
@@ -207,5 +236,13 @@ int usbhs_fifo_read(struct usbhs_pipe *pipe, u8 *buf, int len)
 		buf[i] = (data >> ((i & 0x03) * 8)) & 0xff;
 	}
 
-	return total_len;
+usbhs_fifo_read_end:
+	if (info->rx_done) {
+		/* update pkt */
+		pkt->actual	= total_len;
+		pkt->maxp	= usbhs_pipe_get_maxpacket(pipe);
+		info->rx_done(pkt);
+	}
+
+	return 0;
 }
diff --git a/drivers/usb/renesas_usbhs/fifo.h b/drivers/usb/renesas_usbhs/fifo.h
index 75a7c1577ad3..758d85dd31dd 100644
--- a/drivers/usb/renesas_usbhs/fifo.h
+++ b/drivers/usb/renesas_usbhs/fifo.h
@@ -17,14 +17,29 @@
 #ifndef RENESAS_USB_FIFO_H
 #define RENESAS_USB_FIFO_H
 
-#include "common.h"
+#include "pipe.h"
+
+struct usbhs_pkt {
+	struct usbhs_pipe *pipe;
+	int maxp;
+	void *buf;
+	int length;
+	int actual;
+};
 
 /*
  * 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_write(struct usbhs_pkt *pkt);
+int usbhs_fifo_read(struct usbhs_pkt *pkt);
 int usbhs_fifo_prepare_write(struct usbhs_pipe *pipe);
 int usbhs_fifo_prepare_read(struct usbhs_pipe *pipe);
 
+/*
+ * packet info
+ */
+void usbhs_pkt_update(struct usbhs_pkt *pkt,
+		      struct usbhs_pipe *pipe,
+		      void *buf, int len);
+
 #endif /* RENESAS_USB_FIFO_H */
diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c
index 128c8da8db85..4a1d1fcc90fd 100644
--- a/drivers/usb/renesas_usbhs/mod_gadget.c
+++ b/drivers/usb/renesas_usbhs/mod_gadget.c
@@ -27,6 +27,7 @@
 struct usbhsg_request {
 	struct usb_request	req;
 	struct list_head	node;
+	struct usbhs_pkt	pkt;
 };
 
 #define EP_NAME_SIZE 8
@@ -110,6 +111,10 @@ struct usbhsg_recip_handle {
 #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 */
@@ -319,38 +324,32 @@ static int usbhsg_try_run_ctrl_stage_end(struct usbhsg_uep *uep,
 	return 0;
 }
 
-static int usbhsg_try_run_send_packet(struct usbhsg_uep *uep,
-				      struct usbhsg_request *ureq)
+/*
+ *		packet send hander
+ */
+static void usbhsg_try_run_send_packet_bh(struct usbhs_pkt *pkt)
 {
-	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+	struct usbhs_pipe *pipe = pkt->pipe;
+	struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
+	struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
 	struct usb_request *req = &ureq->req;
 	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
 	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
-	void *buf;
-	int remainder, send;
+	int remainder, send, maxp;
 	int is_done = 0;
 	int enable;
-	int maxp;
 
-	/*
-	 *********  assume under spin lock  *********
-	 */
-
-	maxp		= usbhs_pipe_get_maxpacket(pipe);
-	buf		= req->buf    + req->actual;
-	remainder	= req->length - req->actual;
-
-	send = usbhs_fifo_write(pipe, buf, remainder);
+	maxp		= pkt->maxp;
+	send		= pkt->actual;
+	remainder	= pkt->length;
 
 	/*
-	 * send < 0 : pipe busy
 	 * send = 0 : send zero packet
 	 * send > 0 : send data
 	 *
 	 * send <= max_packet
 	 */
-	if (send > 0)
-		req->actual += send;
+	req->actual += send;
 
 	/* send all packet ? */
 	if (send < remainder)
@@ -372,13 +371,6 @@ static int usbhsg_try_run_send_packet(struct usbhsg_uep *uep,
 	uep->handler->irq_mask(uep, enable);
 
 	/*
-	 * usbhs_fifo_enable execute
-	 *  - after callback_update,
-	 *  - before queue_pop / stage_end
-	 */
-	usbhs_pipe_enable(pipe);
-
-	/*
 	 * all data were sent ?
 	 */
 	if (is_done) {
@@ -389,6 +381,30 @@ static int usbhsg_try_run_send_packet(struct usbhsg_uep *uep,
 
 		usbhsg_queue_pop(uep, ureq, 0);
 	}
+}
+
+static int usbhsg_try_run_send_packet(struct usbhsg_uep *uep,
+				      struct usbhsg_request *ureq)
+{
+	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+	struct usb_request *req = &ureq->req;
+	struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq);
+	int ret;
+
+	/*
+	 *********  assume under spin lock  *********
+	 */
+
+	usbhs_pkt_update(pkt, pipe,
+			 req->buf    + req->actual,
+			 req->length - req->actual);
+
+	ret = usbhs_fifo_write(pkt);
+	if (ret < 0) {
+		/* pipe is busy.
+		 * retry in interrupt */
+		uep->handler->irq_mask(uep, 1);
+	}
 
 	return 0;
 }
@@ -408,35 +424,30 @@ static int usbhsg_prepare_send_packet(struct usbhsg_uep *uep,
 	return 0;
 }
 
-static int usbhsg_try_run_receive_packet(struct usbhsg_uep *uep,
-					 struct usbhsg_request *ureq)
+/*
+ *		packet recv hander
+ */
+static void usbhsg_try_run_receive_packet_bh(struct usbhs_pkt *pkt)
 {
-	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+	struct usbhs_pipe *pipe = pkt->pipe;
+	struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
+	struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
 	struct usb_request *req = &ureq->req;
 	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
 	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
-	void *buf;
-	int maxp;
-	int remainder, recv;
+	int remainder, recv, maxp;
 	int is_done = 0;
 
-	/*
-	 *********  assume under spin lock  *********
-	 */
-
-	maxp		= usbhs_pipe_get_maxpacket(pipe);
-	buf		= req->buf    + req->actual;
-	remainder	= req->length - req->actual;
+	maxp		= pkt->maxp;
+	remainder	= pkt->length;
+	recv		= pkt->actual;
 
-	recv = usbhs_fifo_read(pipe, buf, remainder);
 	/*
 	 * recv < 0  : pipe busy
 	 * recv >= 0 : receive data
 	 *
 	 * recv <= max_packet
 	 */
-	if (recv < 0)
-		return -EBUSY;
 
 	/* update parameters */
 	req->actual += recv;
@@ -457,8 +468,24 @@ static int usbhsg_try_run_receive_packet(struct usbhsg_uep *uep,
 		usbhs_pipe_disable(pipe);
 		usbhsg_queue_pop(uep, ureq, 0);
 	}
+}
 
-	return 0;
+static int usbhsg_try_run_receive_packet(struct usbhsg_uep *uep,
+					 struct usbhsg_request *ureq)
+{
+	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+	struct usb_request *req = &ureq->req;
+	struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq);
+
+	/*
+	 *********  assume under spin lock  *********
+	 */
+
+	usbhs_pkt_update(pkt, pipe,
+			 req->buf    + req->actual,
+			 req->length - req->actual);
+
+	return usbhs_fifo_read(pkt);
 }
 
 static int usbhsg_prepare_receive_packet(struct usbhsg_uep *uep,
@@ -1086,7 +1113,9 @@ static int usbhsg_try_start(struct usbhs_priv *priv, u32 status)
 	/*
 	 * pipe initialize and enable DCP
 	 */
-	usbhs_pipe_init(priv);
+	usbhs_pipe_init(priv,
+			usbhsg_try_run_send_packet_bh,
+			usbhsg_try_run_receive_packet_bh);
 	usbhsg_uep_init(gpriv);
 	usbhsg_dcp_enable(dcp);
 
diff --git a/drivers/usb/renesas_usbhs/pipe.c b/drivers/usb/renesas_usbhs/pipe.c
index 75e9e3cbc0e5..7a11616d6e28 100644
--- a/drivers/usb/renesas_usbhs/pipe.c
+++ b/drivers/usb/renesas_usbhs/pipe.c
@@ -531,7 +531,9 @@ static struct usbhs_pipe *usbhsp_get_pipe(struct usbhs_priv *priv, u32 type)
 	return pipe;
 }
 
-void usbhs_pipe_init(struct usbhs_priv *priv)
+void usbhs_pipe_init(struct usbhs_priv *priv,
+		     void (*tx_done)(struct usbhs_pkt *pkt),
+		     void (*rx_done)(struct usbhs_pkt *pkt))
 {
 	struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
 	struct usbhs_pipe *pipe;
@@ -561,6 +563,9 @@ void usbhs_pipe_init(struct usbhs_priv *priv)
 		usbhsp_pipectrl_set(pipe, ACLRM, ACLRM);
 		usbhsp_pipectrl_set(pipe, ACLRM, 0);
 	}
+
+	info->tx_done = tx_done;
+	info->rx_done = rx_done;
 }
 
 struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv,
@@ -639,7 +644,6 @@ void usbhs_dcp_control_transfer_done(struct usbhs_pipe *pipe)
 	usbhsp_pipectrl_set(pipe, CCPL, CCPL);
 }
 
-
 /*
  *		pipe module function
  */
diff --git a/drivers/usb/renesas_usbhs/pipe.h b/drivers/usb/renesas_usbhs/pipe.h
index 2fb69df932ed..1f871b0c4971 100644
--- a/drivers/usb/renesas_usbhs/pipe.h
+++ b/drivers/usb/renesas_usbhs/pipe.h
@@ -18,6 +18,7 @@
 #define RENESAS_USB_PIPE_H
 
 #include "./common.h"
+#include "./fifo.h"
 
 /*
  *	struct
@@ -39,6 +40,9 @@ struct usbhs_pipe_info {
 	struct usbhs_pipe *pipe;
 	int size;	/* array size of "pipe" */
 	int bufnmb_last;	/* FIXME : driver needs good allocator */
+
+	void (*tx_done)(struct usbhs_pkt *pkt);
+	void (*rx_done)(struct usbhs_pkt *pkt);
 };
 
 /*
@@ -76,7 +80,9 @@ int usbhs_pipe_probe(struct usbhs_priv *priv);
 void usbhs_pipe_remove(struct usbhs_priv *priv);
 int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe);
 int usbhs_pipe_is_dir_host(struct usbhs_pipe *pipe);
-void usbhs_pipe_init(struct usbhs_priv *priv);
+void usbhs_pipe_init(struct usbhs_priv *priv,
+		     void (*tx_done)(struct usbhs_pkt *pkt),
+		     void (*rx_done)(struct usbhs_pkt *pkt));
 int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe);
 void usbhs_pipe_clear_sequence(struct usbhs_pipe *pipe);
 int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe);
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-10-19 02:18:52 +0000