cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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fhci-dbg.c (2662B)

      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}