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 000000000000..34e14edf390b
--- /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(&regs->usb_mod), in_8(&regs->usb_addr),
+                in_8(&regs->usb_comm), in_be16(&regs->usb_ep[0]),
+                in_be16(&regs->usb_event), in_be16(&regs->usb_mask),
+                in_8(&regs->usb_status), in_be16(&regs->usb_sof_tmr),
+                in_be16(&regs->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->bus_id, 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);
+}