1 /*
2 * Freescale QUICC Engine USB Host Controller Driver
3 *
4 * Copyright (c) Freescale Semicondutor, Inc. 2006.
5 * Shlomi Gridish <gridish@freescale.com>
6 * Jerry Huang <Chang-Ming.Huang@freescale.com>
7 * Copyright (c) Logic Product Development, Inc. 2007
8 * Peter Barada <peterb@logicpd.com>
9 * Copyright (c) MontaVista Software, Inc. 2008.
10 * Anton Vorontsov <avorontsov@ru.mvista.com>
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
16 */
17
18 #include <linux/kernel.h>
19 #include <linux/errno.h>
20 #include <linux/debugfs.h>
21 #include <linux/seq_file.h>
22 #include <linux/usb.h>
23 #include "../core/hcd.h"
24 #include "fhci.h"
25
26 void fhci_dbg_isr(struct fhci_hcd *fhci, int usb_er)
27 {
28 int i;
29
30 if (usb_er == -1) {
31 fhci->usb_irq_stat[12]++;
32 return;
33 }
34
35 for (i = 0; i < 12; ++i) {
36 if (usb_er & (1 << i))
37 fhci->usb_irq_stat[i]++;
38 }
39 }
40
41 static int fhci_dfs_regs_show(struct seq_file *s, void *v)
42 {
43 struct fhci_hcd *fhci = s->private;
44 struct fhci_regs __iomem *regs = fhci->regs;
45
46 seq_printf(s,
47 "mode: 0x%x\n" "addr: 0x%x\n"
48 "command: 0x%x\n" "ep0: 0x%x\n"
49 "event: 0x%x\n" "mask: 0x%x\n"
50 "status: 0x%x\n" "SOF timer: %d\n"
51 "frame number: %d\n"
52 "lines status: 0x%x\n",
53 in_8(®s->usb_mod), in_8(®s->usb_addr),
54 in_8(®s->usb_comm), in_be16(®s->usb_ep[0]),
55 in_be16(®s->usb_event), in_be16(®s->usb_mask),
56 in_8(®s->usb_status), in_be16(®s->usb_sof_tmr),
57 in_be16(®s->usb_frame_num),
58 fhci_ioports_check_bus_state(fhci));
59
60 return 0;
61 }
62
63 static int fhci_dfs_irq_stat_show(struct seq_file *s, void *v)
64 {
65 struct fhci_hcd *fhci = s->private;
66 int *usb_irq_stat = fhci->usb_irq_stat;
67
68 seq_printf(s,
69 "RXB: %d\n" "TXB: %d\n" "BSY: %d\n"
70 "SOF: %d\n" "TXE0: %d\n" "TXE1: %d\n"
71 "TXE2: %d\n" "TXE3: %d\n" "IDLE: %d\n"
72 "RESET: %d\n" "SFT: %d\n" "MSF: %d\n"
73 "IDLE_ONLY: %d\n",
74 usb_irq_stat[0], usb_irq_stat[1], usb_irq_stat[2],
75 usb_irq_stat[3], usb_irq_stat[4], usb_irq_stat[5],
76 usb_irq_stat[6], usb_irq_stat[7], usb_irq_stat[8],
77 usb_irq_stat[9], usb_irq_stat[10], usb_irq_stat[11],
78 usb_irq_stat[12]);
79
80 return 0;
81 }
82
83 static int fhci_dfs_regs_open(struct inode *inode, struct file *file)
84 {
85 return single_open(file, fhci_dfs_regs_show, inode->i_private);
86 }
87
88 static int fhci_dfs_irq_stat_open(struct inode *inode, struct file *file)
89 {
90 return single_open(file, fhci_dfs_irq_stat_show, inode->i_private);
91 }
92
93 static const struct file_operations fhci_dfs_regs_fops = {
94 .open = fhci_dfs_regs_open,
95 .read = seq_read,
96 .llseek = seq_lseek,
97 .release = single_release,
98 };
99
100 static const struct file_operations fhci_dfs_irq_stat_fops = {
101 .open = fhci_dfs_irq_stat_open,
102 .read = seq_read,
103 .llseek = seq_lseek,
104 .release = single_release,
105 };
106
107 void fhci_dfs_create(struct fhci_hcd *fhci)
108 {
109 struct device *dev = fhci_to_hcd(fhci)->self.controller;
110
111 fhci->dfs_root = debugfs_create_dir(dev_name(dev), usb_debug_root);
112 if (!fhci->dfs_root) {
113 WARN_ON(1);
114 return;
115 }
116
117 fhci->dfs_regs = debugfs_create_file("regs", S_IFREG | S_IRUGO,
118 fhci->dfs_root, fhci, &fhci_dfs_regs_fops);
119
120 fhci->dfs_irq_stat = debugfs_create_file("irq_stat",
121 S_IFREG | S_IRUGO, fhci->dfs_root, fhci,
122 &fhci_dfs_irq_stat_fops);
123
124 WARN_ON(!fhci->dfs_regs || !fhci->dfs_irq_stat);
125 }
126
127 void fhci_dfs_destroy(struct fhci_hcd *fhci)
128 {
129 if (!fhci->dfs_root)
130 return;
131
132 if (fhci->dfs_irq_stat)
133 debugfs_remove(fhci->dfs_irq_stat);
134
135 if (fhci->dfs_regs)
136 debugfs_remove(fhci->dfs_regs);
137
138 debugfs_remove(fhci->dfs_root);
139 }
140
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