tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 */