1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Freescale QUICC Engine USB Host Controller Driver
4 *
5 * Copyright (c) Freescale Semicondutor, Inc. 2006.
6 * Shlomi Gridish <gridish@freescale.com>
7 * Jerry Huang <Chang-Ming.Huang@freescale.com>
8 * Copyright (c) Logic Product Development, Inc. 2007
9 * Peter Barada <peterb@logicpd.com>
10 * Copyright (c) MontaVista Software, Inc. 2008.
11 * Anton Vorontsov <avorontsov@ru.mvista.com>
12 */
13
14 #include <linux/kernel.h>
15 #include <linux/errno.h>
16 #include <linux/debugfs.h>
17 #include <linux/seq_file.h>
18 #include <linux/usb.h>
19 #include <linux/usb/hcd.h>
20 #include "fhci.h"
21
fhci_dbg_isr(struct fhci_hcd * fhci,int usb_er)22 void fhci_dbg_isr(struct fhci_hcd *fhci, int usb_er)
23 {
24 int i;
25
26 if (usb_er == -1) {
27 fhci->usb_irq_stat[12]++;
28 return;
29 }
30
31 for (i = 0; i < 12; ++i) {
32 if (usb_er & (1 << i))
33 fhci->usb_irq_stat[i]++;
34 }
35 }
36
fhci_dfs_regs_show(struct seq_file * s,void * v)37 static int fhci_dfs_regs_show(struct seq_file *s, void *v)
38 {
39 struct fhci_hcd *fhci = s->private;
40 struct qe_usb_ctlr __iomem *regs = fhci->regs;
41
42 seq_printf(s,
43 "mode: 0x%x\n" "addr: 0x%x\n"
44 "command: 0x%x\n" "ep0: 0x%x\n"
45 "event: 0x%x\n" "mask: 0x%x\n"
46 "status: 0x%x\n" "SOF timer: %d\n"
47 "frame number: %d\n"
48 "lines status: 0x%x\n",
49 in_8(®s->usb_usmod), in_8(®s->usb_usadr),
50 in_8(®s->usb_uscom), in_be16(®s->usb_usep[0]),
51 in_be16(®s->usb_usber), in_be16(®s->usb_usbmr),
52 in_8(®s->usb_usbs), in_be16(®s->usb_ussft),
53 in_be16(®s->usb_usfrn),
54 fhci_ioports_check_bus_state(fhci));
55
56 return 0;
57 }
58 DEFINE_SHOW_ATTRIBUTE(fhci_dfs_regs);
59
fhci_dfs_irq_stat_show(struct seq_file * s,void * v)60 static int fhci_dfs_irq_stat_show(struct seq_file *s, void *v)
61 {
62 struct fhci_hcd *fhci = s->private;
63 int *usb_irq_stat = fhci->usb_irq_stat;
64
65 seq_printf(s,
66 "RXB: %d\n" "TXB: %d\n" "BSY: %d\n"
67 "SOF: %d\n" "TXE0: %d\n" "TXE1: %d\n"
68 "TXE2: %d\n" "TXE3: %d\n" "IDLE: %d\n"
69 "RESET: %d\n" "SFT: %d\n" "MSF: %d\n"
70 "IDLE_ONLY: %d\n",
71 usb_irq_stat[0], usb_irq_stat[1], usb_irq_stat[2],
72 usb_irq_stat[3], usb_irq_stat[4], usb_irq_stat[5],
73 usb_irq_stat[6], usb_irq_stat[7], usb_irq_stat[8],
74 usb_irq_stat[9], usb_irq_stat[10], usb_irq_stat[11],
75 usb_irq_stat[12]);
76
77 return 0;
78 }
79 DEFINE_SHOW_ATTRIBUTE(fhci_dfs_irq_stat);
80
fhci_dfs_create(struct fhci_hcd * fhci)81 void fhci_dfs_create(struct fhci_hcd *fhci)
82 {
83 struct device *dev = fhci_to_hcd(fhci)->self.controller;
84
85 fhci->dfs_root = debugfs_create_dir(dev_name(dev), usb_debug_root);
86
87 debugfs_create_file("regs", S_IFREG | S_IRUGO, fhci->dfs_root, fhci,
88 &fhci_dfs_regs_fops);
89 debugfs_create_file("irq_stat", S_IFREG | S_IRUGO, fhci->dfs_root, fhci,
90 &fhci_dfs_irq_stat_fops);
91 }
92
fhci_dfs_destroy(struct fhci_hcd * fhci)93 void fhci_dfs_destroy(struct fhci_hcd *fhci)
94 {
95 debugfs_remove_recursive(fhci->dfs_root);
96 }
97