diff options
Diffstat (limited to 'drivers/usb/host/fhci-dbg.c')
| -rw-r--r-- | drivers/usb/host/fhci-dbg.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/drivers/usb/host/fhci-dbg.c b/drivers/usb/host/fhci-dbg.c new file mode 100644 index 00000000000..ea8a4255c5d --- /dev/null +++ b/drivers/usb/host/fhci-dbg.c @@ -0,0 +1,139 @@ +/* + * Freescale QUICC Engine USB Host Controller Driver + * + * Copyright (c) Freescale Semicondutor, Inc. 2006. + * Shlomi Gridish <gridish@freescale.com> + * Jerry Huang <Chang-Ming.Huang@freescale.com> + * Copyright (c) Logic Product Development, Inc. 2007 + * Peter Barada <peterb@logicpd.com> + * Copyright (c) MontaVista Software, Inc. 2008. + * Anton Vorontsov <avorontsov@ru.mvista.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/debugfs.h> +#include <linux/seq_file.h> +#include <linux/usb.h> +#include "../core/hcd.h" +#include "fhci.h" + +void fhci_dbg_isr(struct fhci_hcd *fhci, int usb_er) +{ + int i; + + if (usb_er == -1) { + fhci->usb_irq_stat[12]++; + return; + } + + for (i = 0; i < 12; ++i) { + if (usb_er & (1 << i)) + fhci->usb_irq_stat[i]++; + } +} + +static int fhci_dfs_regs_show(struct seq_file *s, void *v) +{ + struct fhci_hcd *fhci = s->private; + struct fhci_regs __iomem *regs = fhci->regs; + + seq_printf(s, + "mode: 0x%x\n" "addr: 0x%x\n" + "command: 0x%x\n" "ep0: 0x%x\n" + "event: 0x%x\n" "mask: 0x%x\n" + "status: 0x%x\n" "SOF timer: %d\n" + "frame number: %d\n" + "lines status: 0x%x\n", + in_8(®s->usb_mod), in_8(®s->usb_addr), + in_8(®s->usb_comm), in_be16(®s->usb_ep[0]), + in_be16(®s->usb_event), in_be16(®s->usb_mask), + in_8(®s->usb_status), in_be16(®s->usb_sof_tmr), + in_be16(®s->usb_frame_num), + fhci_ioports_check_bus_state(fhci)); + + return 0; +} + +static int fhci_dfs_irq_stat_show(struct seq_file *s, void *v) +{ + struct fhci_hcd *fhci = s->private; + int *usb_irq_stat = fhci->usb_irq_stat; + + seq_printf(s, + "RXB: %d\n" "TXB: %d\n" "BSY: %d\n" + "SOF: %d\n" "TXE0: %d\n" "TXE1: %d\n" + "TXE2: %d\n" "TXE3: %d\n" "IDLE: %d\n" + "RESET: %d\n" "SFT: %d\n" "MSF: %d\n" + "IDLE_ONLY: %d\n", + usb_irq_stat[0], usb_irq_stat[1], usb_irq_stat[2], + usb_irq_stat[3], usb_irq_stat[4], usb_irq_stat[5], + usb_irq_stat[6], usb_irq_stat[7], usb_irq_stat[8], + usb_irq_stat[9], usb_irq_stat[10], usb_irq_stat[11], + usb_irq_stat[12]); + + return 0; +} + +static int fhci_dfs_regs_open(struct inode *inode, struct file *file) +{ + return single_open(file, fhci_dfs_regs_show, inode->i_private); +} + +static int fhci_dfs_irq_stat_open(struct inode *inode, struct file *file) +{ + return single_open(file, fhci_dfs_irq_stat_show, inode->i_private); +} + +static const struct file_operations fhci_dfs_regs_fops = { + .open = fhci_dfs_regs_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static const struct file_operations fhci_dfs_irq_stat_fops = { + .open = fhci_dfs_irq_stat_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +void fhci_dfs_create(struct fhci_hcd *fhci) +{ + struct device *dev = fhci_to_hcd(fhci)->self.controller; + + fhci->dfs_root = debugfs_create_dir(dev_name(dev), NULL); + if (!fhci->dfs_root) { + WARN_ON(1); + return; + } + + fhci->dfs_regs = debugfs_create_file("regs", S_IFREG | S_IRUGO, + fhci->dfs_root, fhci, &fhci_dfs_regs_fops); + + fhci->dfs_irq_stat = debugfs_create_file("irq_stat", + S_IFREG | S_IRUGO, fhci->dfs_root, fhci, + &fhci_dfs_irq_stat_fops); + + WARN_ON(!fhci->dfs_regs || !fhci->dfs_irq_stat); +} + +void fhci_dfs_destroy(struct fhci_hcd *fhci) +{ + if (!fhci->dfs_root) + return; + + if (fhci->dfs_irq_stat) + debugfs_remove(fhci->dfs_irq_stat); + + if (fhci->dfs_regs) + debugfs_remove(fhci->dfs_regs); + + debugfs_remove(fhci->dfs_root); +} |