1 /* 2 * Freescale QUICC Engine USB Host Controller Driver 3 * 4 * Copyright (c) Freescale Semicondutor, Inc. 2006. 5 * Shlomi Gridish <gridish@freescale.com> 6 * Jerry Huang <Chang-Ming.Huang@freescale.com> 7 * Copyright (c) Logic Product Development, Inc. 2007 8 * Peter Barada <peterb@logicpd.com> 9 * Copyright (c) MontaVista Software, Inc. 2008. 10 * Anton Vorontsov <avorontsov@ru.mvista.com> 11 * 12 * This program is free software; you can redistribute it and/or modify it 13 * under the terms of the GNU General Public License as published by the 14 * Free Software Foundation; either version 2 of the License, or (at your 15 * option) any later version. 16 */ 17 18 #include <linux/kernel.h> 19 #include <linux/errno.h> 20 #include <linux/debugfs.h> 21 #include <linux/seq_file.h> 22 #include <linux/usb.h> 23 #include <linux/usb/hcd.h> 24 #include "fhci.h" 25 26 void fhci_dbg_isr(struct fhci_hcd *fhci, int usb_er) 27 { 28 int i; 29 30 if (usb_er == -1) { 31 fhci->usb_irq_stat[12]++; 32 return; 33 } 34 35 for (i = 0; i < 12; ++i) { 36 if (usb_er & (1 << i)) 37 fhci->usb_irq_stat[i]++; 38 } 39 } 40 41 static int fhci_dfs_regs_show(struct seq_file *s, void *v) 42 { 43 struct fhci_hcd *fhci = s->private; 44 struct qe_usb_ctlr __iomem *regs = fhci->regs; 45 46 seq_printf(s, 47 "mode: 0x%x\n" "addr: 0x%x\n" 48 "command: 0x%x\n" "ep0: 0x%x\n" 49 "event: 0x%x\n" "mask: 0x%x\n" 50 "status: 0x%x\n" "SOF timer: %d\n" 51 "frame number: %d\n" 52 "lines status: 0x%x\n", 53 in_8(®s->usb_usmod), in_8(®s->usb_usadr), 54 in_8(®s->usb_uscom), in_be16(®s->usb_usep[0]), 55 in_be16(®s->usb_usber), in_be16(®s->usb_usbmr), 56 in_8(®s->usb_usbs), in_be16(®s->usb_ussft), 57 in_be16(®s->usb_usfrn), 58 fhci_ioports_check_bus_state(fhci)); 59 60 return 0; 61 } 62 63 static int fhci_dfs_irq_stat_show(struct seq_file *s, void *v) 64 { 65 struct fhci_hcd *fhci = s->private; 66 int *usb_irq_stat = fhci->usb_irq_stat; 67 68 seq_printf(s, 69 "RXB: %d\n" "TXB: %d\n" "BSY: %d\n" 70 "SOF: %d\n" "TXE0: %d\n" "TXE1: %d\n" 71 "TXE2: %d\n" "TXE3: %d\n" "IDLE: %d\n" 72 "RESET: %d\n" "SFT: %d\n" "MSF: %d\n" 73 "IDLE_ONLY: %d\n", 74 usb_irq_stat[0], usb_irq_stat[1], usb_irq_stat[2], 75 usb_irq_stat[3], usb_irq_stat[4], usb_irq_stat[5], 76 usb_irq_stat[6], usb_irq_stat[7], usb_irq_stat[8], 77 usb_irq_stat[9], usb_irq_stat[10], usb_irq_stat[11], 78 usb_irq_stat[12]); 79 80 return 0; 81 } 82 83 static int fhci_dfs_regs_open(struct inode *inode, struct file *file) 84 { 85 return single_open(file, fhci_dfs_regs_show, inode->i_private); 86 } 87 88 static int fhci_dfs_irq_stat_open(struct inode *inode, struct file *file) 89 { 90 return single_open(file, fhci_dfs_irq_stat_show, inode->i_private); 91 } 92 93 static const struct file_operations fhci_dfs_regs_fops = { 94 .open = fhci_dfs_regs_open, 95 .read = seq_read, 96 .llseek = seq_lseek, 97 .release = single_release, 98 }; 99 100 static const struct file_operations fhci_dfs_irq_stat_fops = { 101 .open = fhci_dfs_irq_stat_open, 102 .read = seq_read, 103 .llseek = seq_lseek, 104 .release = single_release, 105 }; 106 107 void fhci_dfs_create(struct fhci_hcd *fhci) 108 { 109 struct device *dev = fhci_to_hcd(fhci)->self.controller; 110 111 fhci->dfs_root = debugfs_create_dir(dev_name(dev), usb_debug_root); 112 if (!fhci->dfs_root) { 113 WARN_ON(1); 114 return; 115 } 116 117 fhci->dfs_regs = debugfs_create_file("regs", S_IFREG | S_IRUGO, 118 fhci->dfs_root, fhci, &fhci_dfs_regs_fops); 119 120 fhci->dfs_irq_stat = debugfs_create_file("irq_stat", 121 S_IFREG | S_IRUGO, fhci->dfs_root, fhci, 122 &fhci_dfs_irq_stat_fops); 123 124 WARN_ON(!fhci->dfs_regs || !fhci->dfs_irq_stat); 125 } 126 127 void fhci_dfs_destroy(struct fhci_hcd *fhci) 128 { 129 if (!fhci->dfs_root) 130 return; 131 132 if (fhci->dfs_irq_stat) 133 debugfs_remove(fhci->dfs_irq_stat); 134 135 if (fhci->dfs_regs) 136 debugfs_remove(fhci->dfs_regs); 137 138 debugfs_remove(fhci->dfs_root); 139 } 140