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 | |
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 | |
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(m: s, |
43 | fmt: "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 | |
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(m: s, |
66 | fmt: "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 | |
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(name: dev_name(dev), parent: usb_debug_root); |
86 | |
87 | debugfs_create_file(name: "regs" , S_IFREG | S_IRUGO, parent: fhci->dfs_root, data: fhci, |
88 | fops: &fhci_dfs_regs_fops); |
89 | debugfs_create_file(name: "irq_stat" , S_IFREG | S_IRUGO, parent: fhci->dfs_root, data: fhci, |
90 | fops: &fhci_dfs_irq_stat_fops); |
91 | } |
92 | |
93 | void fhci_dfs_destroy(struct fhci_hcd *fhci) |
94 | { |
95 | debugfs_remove_recursive(dentry: fhci->dfs_root); |
96 | } |
97 | |