summaryrefslogblamecommitdiff
path: root/drivers/usb/host/fhci-dbg.c
blob: e799f86dab1169c3542dc4c7c8eb5411feb2c2c8 (plain) (tree) 
236dd4d18f29 ^














































































































66536ab36895 ^

236dd4d18f29 ^




























1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110

111

112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139














































































































                                                                           
                                                                           



























                                                                       
/*
 * Freescale QUICC Engine USB Host Controller Driver
 *
 * Copyright (c) Freescale Semicondutor, Inc. 2006.
 *               Shlomi Gridish <gridish@freescale.com>
 *               Jerry Huang <Chang-Ming.Huang@freescale.com>
 * Copyright (c) Logic Product Development, Inc. 2007
 *               Peter Barada <peterb@logicpd.com>
 * Copyright (c) MontaVista Software, Inc. 2008.
 *               Anton Vorontsov <avorontsov@ru.mvista.com>
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/usb.h>
#include "../core/hcd.h"
#include "fhci.h"

void fhci_dbg_isr(struct fhci_hcd *fhci, int usb_er)
{
	int i;

	if (usb_er == -1) {
		fhci->usb_irq_stat[12]++;
		return;
	}

	for (i = 0; i < 12; ++i) {
		if (usb_er & (1 << i))
			fhci->usb_irq_stat[i]++;
	}
}

static int fhci_dfs_regs_show(struct seq_file *s, void *v)
{
	struct fhci_hcd *fhci = s->private;
	struct fhci_regs __iomem *regs = fhci->regs;

	seq_printf(s,
		"mode: 0x%x\n" "addr: 0x%x\n"
		"command: 0x%x\n" "ep0: 0x%x\n"
		"event: 0x%x\n" "mask: 0x%x\n"
		"status: 0x%x\n" "SOF timer: %d\n"
		"frame number: %d\n"
		"lines status: 0x%x\n",
		in_8(&regs->usb_mod), in_8(&regs->usb_addr),
		in_8(&regs->usb_comm), in_be16(&regs->usb_ep[0]),
		in_be16(&regs->usb_event), in_be16(&regs->usb_mask),
		in_8(&regs->usb_status), in_be16(&regs->usb_sof_tmr),
		in_be16(&regs->usb_frame_num),
		fhci_ioports_check_bus_state(fhci));

	return 0;
}

static int fhci_dfs_irq_stat_show(struct seq_file *s, void *v)
{
	struct fhci_hcd *fhci = s->private;
	int *usb_irq_stat = fhci->usb_irq_stat;

	seq_printf(s,
		"RXB: %d\n" "TXB: %d\n" "BSY: %d\n"
		"SOF: %d\n" "TXE0: %d\n" "TXE1: %d\n"
		"TXE2: %d\n" "TXE3: %d\n" "IDLE: %d\n"
		"RESET: %d\n" "SFT: %d\n" "MSF: %d\n"
		"IDLE_ONLY: %d\n",
		usb_irq_stat[0], usb_irq_stat[1], usb_irq_stat[2],
		usb_irq_stat[3], usb_irq_stat[4], usb_irq_stat[5],
		usb_irq_stat[6], usb_irq_stat[7], usb_irq_stat[8],
		usb_irq_stat[9], usb_irq_stat[10], usb_irq_stat[11],
		usb_irq_stat[12]);

	return 0;
}

static int fhci_dfs_regs_open(struct inode *inode, struct file *file)
{
	return single_open(file, fhci_dfs_regs_show, inode->i_private);
}

static int fhci_dfs_irq_stat_open(struct inode *inode, struct file *file)
{
	return single_open(file, fhci_dfs_irq_stat_show, inode->i_private);
}

static const struct file_operations fhci_dfs_regs_fops = {
	.open = fhci_dfs_regs_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = single_release,
};

static const struct file_operations fhci_dfs_irq_stat_fops = {
	.open = fhci_dfs_irq_stat_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = single_release,
};

void fhci_dfs_create(struct fhci_hcd *fhci)
{
	struct device *dev = fhci_to_hcd(fhci)->self.controller;

	fhci->dfs_root = debugfs_create_dir(dev_name(dev), usb_debug_root);
	if (!fhci->dfs_root) {
		WARN_ON(1);
		return;
	}

	fhci->dfs_regs = debugfs_create_file("regs", S_IFREG | S_IRUGO,
		fhci->dfs_root, fhci, &fhci_dfs_regs_fops);

	fhci->dfs_irq_stat = debugfs_create_file("irq_stat",
		S_IFREG | S_IRUGO, fhci->dfs_root, fhci,
		&fhci_dfs_irq_stat_fops);

	WARN_ON(!fhci->dfs_regs || !fhci->dfs_irq_stat);
}

void fhci_dfs_destroy(struct fhci_hcd *fhci)
{
	if (!fhci->dfs_root)
		return;

	if (fhci->dfs_irq_stat)
		debugfs_remove(fhci->dfs_irq_stat);

	if (fhci->dfs_regs)
		debugfs_remove(fhci->dfs_regs);

	debugfs_remove(fhci->dfs_root);
}