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 } 97