1 files changed, 102 insertions, 0 deletions
diff --git a/drivers/usb/renesas_usbhs/fifo.h b/drivers/usb/renesas_usbhs/fifo.h
new file mode 100644
index 000000000..039a2b993
--- /dev/null
+++ b/drivers/usb/renesas_usbhs/fifo.h
@@ -0,0 +1,102 @@
+/* SPDX-License-Identifier: GPL-1.0+ */
+/*
+ * Renesas USB driver
+ *
+ * Copyright (C) 2011 Renesas Solutions Corp.
+ * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+ */
+#ifndef RENESAS_USB_FIFO_H
+#define RENESAS_USB_FIFO_H
+
+#include <linux/interrupt.h>
+#include <linux/sh_dma.h>
+#include <linux/workqueue.h>
+#include <asm/dma.h>
+#include "pipe.h"
+
+struct usbhs_fifo {
+	char *name;
+	u32 port;	/* xFIFO */
+	u32 sel;	/* xFIFOSEL */
+	u32 ctr;	/* xFIFOCTR */
+
+	struct usbhs_pipe	*pipe;
+
+	struct dma_chan		*tx_chan;
+	struct dma_chan		*rx_chan;
+
+	struct sh_dmae_slave	tx_slave;
+	struct sh_dmae_slave	rx_slave;
+};
+
+#define USBHS_MAX_NUM_DFIFO	4
+struct usbhs_fifo_info {
+	struct usbhs_fifo cfifo;
+	struct usbhs_fifo dfifo[USBHS_MAX_NUM_DFIFO];
+};
+#define usbhsf_get_dnfifo(p, n)	(&((p)->fifo_info.dfifo[n]))
+#define usbhs_for_each_dfifo(priv, dfifo, i)			\
+	for ((i) = 0;						\
+	     ((i) < USBHS_MAX_NUM_DFIFO) &&			\
+		     ((dfifo) = usbhsf_get_dnfifo(priv, (i)));	\
+	     (i)++)
+
+struct usbhs_pkt_handle;
+struct usbhs_pkt {
+	struct list_head node;
+	struct usbhs_pipe *pipe;
+	const struct usbhs_pkt_handle *handler;
+	void (*done)(struct usbhs_priv *priv,
+		     struct usbhs_pkt *pkt);
+	struct work_struct work;
+	dma_addr_t dma;
+	const struct dmaengine_result *dma_result;
+	void *buf;
+	int length;
+	int trans;
+	int actual;
+	int zero;
+	int sequence;
+};
+
+struct usbhs_pkt_handle {
+	int (*prepare)(struct usbhs_pkt *pkt, int *is_done);
+	int (*try_run)(struct usbhs_pkt *pkt, int *is_done);
+	int (*dma_done)(struct usbhs_pkt *pkt, int *is_done);
+};
+
+/*
+ * fifo
+ */
+int usbhs_fifo_probe(struct usbhs_priv *priv);
+void usbhs_fifo_remove(struct usbhs_priv *priv);
+void usbhs_fifo_init(struct usbhs_priv *priv);
+void usbhs_fifo_quit(struct usbhs_priv *priv);
+void usbhs_fifo_clear_dcp(struct usbhs_pipe *pipe);
+
+/*
+ * packet info
+ */
+extern const struct usbhs_pkt_handle usbhs_fifo_pio_push_handler;
+extern const struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler;
+extern const struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler;
+
+extern const struct usbhs_pkt_handle usbhs_fifo_dma_push_handler;
+extern const struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler;
+
+extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler;
+extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler;
+
+extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler;
+extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler;
+
+void usbhs_pkt_init(struct usbhs_pkt *pkt);
+void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
+		    void (*done)(struct usbhs_priv *priv,
+				 struct usbhs_pkt *pkt),
+		    void *buf, int len, int zero, int sequence);
+struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt);
+void usbhs_pkt_start(struct usbhs_pipe *pipe);
+struct usbhs_pkt *__usbhsf_pkt_get(struct usbhs_pipe *pipe);
+
+#endif /* RENESAS_USB_FIFO_H */