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1/* SPDX-License-Identifier: GPL-1.0+ */
2/*
3 * Renesas USB driver
4 *
5 * Copyright (C) 2011 Renesas Solutions Corp.
6 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
7 */
8#ifndef RENESAS_USB_FIFO_H
9#define RENESAS_USB_FIFO_H
10
11#include <linux/interrupt.h>
12#include <linux/sh_dma.h>
13#include <linux/workqueue.h>
14#include <asm/dma.h>
15#include "pipe.h"
16
17struct usbhs_fifo {
18 char *name;
19 u32 port; /* xFIFO */
20 u32 sel; /* xFIFOSEL */
21 u32 ctr; /* xFIFOCTR */
22
23 struct usbhs_pipe *pipe;
24
25 struct dma_chan *tx_chan;
26 struct dma_chan *rx_chan;
27
28 struct sh_dmae_slave tx_slave;
29 struct sh_dmae_slave rx_slave;
30};
31
32#define USBHS_MAX_NUM_DFIFO 4
33struct usbhs_fifo_info {
34 struct usbhs_fifo cfifo;
35 struct usbhs_fifo dfifo[USBHS_MAX_NUM_DFIFO];
36};
37#define usbhsf_get_dnfifo(p, n) (&((p)->fifo_info.dfifo[n]))
38#define usbhs_for_each_dfifo(priv, dfifo, i) \
39 for ((i) = 0; \
40 ((i) < USBHS_MAX_NUM_DFIFO) && \
41 ((dfifo) = usbhsf_get_dnfifo(priv, (i))); \
42 (i)++)
43
44struct usbhs_pkt_handle;
45struct usbhs_pkt {
46 struct list_head node;
47 struct usbhs_pipe *pipe;
48 const struct usbhs_pkt_handle *handler;
49 void (*done)(struct usbhs_priv *priv,
50 struct usbhs_pkt *pkt);
51 struct work_struct work;
52 dma_addr_t dma;
53 const struct dmaengine_result *dma_result;
54 void *buf;
55 int length;
56 int trans;
57 int actual;
58 int zero;
59 int sequence;
60};
61
62struct usbhs_pkt_handle {
63 int (*prepare)(struct usbhs_pkt *pkt, int *is_done);
64 int (*try_run)(struct usbhs_pkt *pkt, int *is_done);
65 int (*dma_done)(struct usbhs_pkt *pkt, int *is_done);
66};
67
68/*
69 * fifo
70 */
71int usbhs_fifo_probe(struct usbhs_priv *priv);
72void usbhs_fifo_remove(struct usbhs_priv *priv);
73void usbhs_fifo_init(struct usbhs_priv *priv);
74void usbhs_fifo_quit(struct usbhs_priv *priv);
75void usbhs_fifo_clear_dcp(struct usbhs_pipe *pipe);
76
77/*
78 * packet info
79 */
80extern const struct usbhs_pkt_handle usbhs_fifo_pio_push_handler;
81extern const struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler;
82extern const struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler;
83
84extern const struct usbhs_pkt_handle usbhs_fifo_dma_push_handler;
85extern const struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler;
86
87extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler;
88extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler;
89
90extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler;
91extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler;
92
93void usbhs_pkt_init(struct usbhs_pkt *pkt);
94void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
95 void (*done)(struct usbhs_priv *priv,
96 struct usbhs_pkt *pkt),
97 void *buf, int len, int zero, int sequence);
98struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt);
99void usbhs_pkt_start(struct usbhs_pipe *pipe);
100struct usbhs_pkt *__usbhsf_pkt_get(struct usbhs_pipe *pipe);
101
102#endif /* RENESAS_USB_FIFO_H */
1/*
2 * Renesas USB driver
3 *
4 * Copyright (C) 2011 Renesas Solutions Corp.
5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
15 *
16 */
17#ifndef RENESAS_USB_FIFO_H
18#define RENESAS_USB_FIFO_H
19
20#include <linux/interrupt.h>
21#include <linux/sh_dma.h>
22#include <linux/workqueue.h>
23#include <asm/dma.h>
24#include "pipe.h"
25
26#define DMA_ADDR_INVALID (~(dma_addr_t)0)
27
28struct usbhs_fifo {
29 char *name;
30 u32 port; /* xFIFO */
31 u32 sel; /* xFIFOSEL */
32 u32 ctr; /* xFIFOCTR */
33
34 struct usbhs_pipe *pipe;
35
36 struct dma_chan *tx_chan;
37 struct dma_chan *rx_chan;
38
39 struct sh_dmae_slave tx_slave;
40 struct sh_dmae_slave rx_slave;
41};
42
43struct usbhs_fifo_info {
44 struct usbhs_fifo cfifo;
45 struct usbhs_fifo d0fifo;
46 struct usbhs_fifo d1fifo;
47};
48
49struct usbhs_pkt_handle;
50struct usbhs_pkt {
51 struct list_head node;
52 struct usbhs_pipe *pipe;
53 struct usbhs_pkt_handle *handler;
54 void (*done)(struct usbhs_priv *priv,
55 struct usbhs_pkt *pkt);
56 struct work_struct work;
57 dma_addr_t dma;
58 void *buf;
59 int length;
60 int trans;
61 int actual;
62 int zero;
63 int sequence;
64};
65
66struct usbhs_pkt_handle {
67 int (*prepare)(struct usbhs_pkt *pkt, int *is_done);
68 int (*try_run)(struct usbhs_pkt *pkt, int *is_done);
69 int (*dma_done)(struct usbhs_pkt *pkt, int *is_done);
70};
71
72/*
73 * fifo
74 */
75int usbhs_fifo_probe(struct usbhs_priv *priv);
76void usbhs_fifo_remove(struct usbhs_priv *priv);
77void usbhs_fifo_init(struct usbhs_priv *priv);
78void usbhs_fifo_quit(struct usbhs_priv *priv);
79
80/*
81 * packet info
82 */
83extern struct usbhs_pkt_handle usbhs_fifo_pio_push_handler;
84extern struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler;
85extern struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler;
86
87extern struct usbhs_pkt_handle usbhs_fifo_dma_push_handler;
88extern struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler;
89
90extern struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler;
91extern struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler;
92
93extern struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler;
94extern struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler;
95
96void usbhs_pkt_init(struct usbhs_pkt *pkt);
97void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
98 void (*done)(struct usbhs_priv *priv,
99 struct usbhs_pkt *pkt),
100 void *buf, int len, int zero, int sequence);
101struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt);
102void usbhs_pkt_start(struct usbhs_pipe *pipe);
103
104#endif /* RENESAS_USB_FIFO_H */