| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame^] | 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(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 | |
| 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 | |
| 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 | |
| 93 | void fhci_dfs_destroy(struct fhci_hcd *fhci) |
| 94 | { |
| 95 | debugfs_remove_recursive(fhci->dfs_root); |
| 96 | } |