1 // SPDX-License-Identifier: GPL-1.0+
5 * Copyright (C) 2011 Renesas Solutions Corp.
6 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 #ifndef RENESAS_USB_FIFO_H
19 #define RENESAS_USB_FIFO_H
21 #include <linux/interrupt.h>
22 #include <linux/sh_dma.h>
23 #include <linux/workqueue.h>
30 u32 sel; /* xFIFOSEL */
31 u32 ctr; /* xFIFOCTR */
33 struct usbhs_pipe *pipe;
35 struct dma_chan *tx_chan;
36 struct dma_chan *rx_chan;
38 struct sh_dmae_slave tx_slave;
39 struct sh_dmae_slave rx_slave;
42 #define USBHS_MAX_NUM_DFIFO 4
43 struct usbhs_fifo_info {
44 struct usbhs_fifo cfifo;
45 struct usbhs_fifo dfifo[USBHS_MAX_NUM_DFIFO];
47 #define usbhsf_get_dnfifo(p, n) (&((p)->fifo_info.dfifo[n]))
48 #define usbhs_for_each_dfifo(priv, dfifo, i) \
50 ((i) < USBHS_MAX_NUM_DFIFO) && \
51 ((dfifo) = usbhsf_get_dnfifo(priv, (i))); \
54 struct usbhs_pkt_handle;
56 struct list_head node;
57 struct usbhs_pipe *pipe;
58 const struct usbhs_pkt_handle *handler;
59 void (*done)(struct usbhs_priv *priv,
60 struct usbhs_pkt *pkt);
61 struct work_struct work;
72 struct usbhs_pkt_handle {
73 int (*prepare)(struct usbhs_pkt *pkt, int *is_done);
74 int (*try_run)(struct usbhs_pkt *pkt, int *is_done);
75 int (*dma_done)(struct usbhs_pkt *pkt, int *is_done);
81 int usbhs_fifo_probe(struct usbhs_priv *priv);
82 void usbhs_fifo_remove(struct usbhs_priv *priv);
83 void usbhs_fifo_init(struct usbhs_priv *priv);
84 void usbhs_fifo_quit(struct usbhs_priv *priv);
85 void usbhs_fifo_clear_dcp(struct usbhs_pipe *pipe);
90 extern const struct usbhs_pkt_handle usbhs_fifo_pio_push_handler;
91 extern const struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler;
92 extern const struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler;
94 extern const struct usbhs_pkt_handle usbhs_fifo_dma_push_handler;
95 extern const struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler;
97 extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler;
98 extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler;
100 extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler;
101 extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler;
103 void usbhs_pkt_init(struct usbhs_pkt *pkt);
104 void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
105 void (*done)(struct usbhs_priv *priv,
106 struct usbhs_pkt *pkt),
107 void *buf, int len, int zero, int sequence);
108 struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt);
109 void usbhs_pkt_start(struct usbhs_pipe *pipe);
111 #endif /* RENESAS_USB_FIFO_H */