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// SPDX-License-Identifier: GPL-1.0+
/*
* 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 <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;
dma_cookie_t cookie;
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);
#endif /* RENESAS_USB_FIFO_H */
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