LXR linux/drivers/usb/host/fhci-dbg.c

   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
  22void 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
  37static 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(&regs->usb_usmod), in_8(&regs->usb_usadr),
  50                in_8(&regs->usb_uscom), in_be16(&regs->usb_usep[0]),
  51                in_be16(&regs->usb_usber), in_be16(&regs->usb_usbmr),
  52                in_8(&regs->usb_usbs), in_be16(&regs->usb_ussft),
  53                in_be16(&regs->usb_usfrn),
  54                fhci_ioports_check_bus_state(fhci));
  55
  56        return 0;
  57}
  58DEFINE_SHOW_ATTRIBUTE(fhci_dfs_regs);
  59
  60static 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}
  79DEFINE_SHOW_ATTRIBUTE(fhci_dfs_irq_stat);
  80
  81void 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
  93void fhci_dfs_destroy(struct fhci_hcd *fhci)
  94{
  95        debugfs_remove_recursive(fhci->dfs_root);
  96}
  97