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 | |
17 | struct 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 |
33 | struct 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 | |
44 | struct usbhs_pkt_handle; |
45 | struct 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 | |
62 | struct 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 | */ |
71 | int usbhs_fifo_probe(struct usbhs_priv *priv); |
72 | void usbhs_fifo_remove(struct usbhs_priv *priv); |
73 | void usbhs_fifo_init(struct usbhs_priv *priv); |
74 | void usbhs_fifo_quit(struct usbhs_priv *priv); |
75 | void usbhs_fifo_clear_dcp(struct usbhs_pipe *pipe); |
76 | |
77 | /* |
78 | * packet info |
79 | */ |
80 | extern const struct usbhs_pkt_handle usbhs_fifo_pio_push_handler; |
81 | extern const struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler; |
82 | extern const struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler; |
83 | |
84 | extern const struct usbhs_pkt_handle usbhs_fifo_dma_push_handler; |
85 | extern const struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler; |
86 | |
87 | extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler; |
88 | extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler; |
89 | |
90 | extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler; |
91 | extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler; |
92 | |
93 | void usbhs_pkt_init(struct usbhs_pkt *pkt); |
94 | void 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); |
98 | struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt); |
99 | void usbhs_pkt_start(struct usbhs_pipe *pipe); |
100 | struct usbhs_pkt *__usbhsf_pkt_get(struct usbhs_pipe *pipe); |
101 | |
102 | #endif /* RENESAS_USB_FIFO_H */ |
103 | |