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![Alexey Dobriyan](/assets/img/avatar_default.png)
[akpm@linux-foundation.org: fix KVM] Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
189 lines
4.9 KiB
C
189 lines
4.9 KiB
C
/*
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* Wireless Host Controller (WHC) debug.
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*
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* Copyright (C) 2008 Cambridge Silicon Radio Ltd.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/kernel.h>
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include "../../wusbcore/wusbhc.h"
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#include "whcd.h"
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struct whc_dbg {
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struct dentry *di_f;
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struct dentry *asl_f;
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struct dentry *pzl_f;
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};
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void qset_print(struct seq_file *s, struct whc_qset *qset)
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{
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struct whc_std *std;
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struct urb *urb = NULL;
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int i;
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seq_printf(s, "qset %08x\n", (u32)qset->qset_dma);
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seq_printf(s, " -> %08x\n", (u32)qset->qh.link);
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seq_printf(s, " info: %08x %08x %08x\n",
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qset->qh.info1, qset->qh.info2, qset->qh.info3);
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seq_printf(s, " sts: %04x errs: %d\n", qset->qh.status, qset->qh.err_count);
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seq_printf(s, " TD: sts: %08x opts: %08x\n",
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qset->qh.overlay.qtd.status, qset->qh.overlay.qtd.options);
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for (i = 0; i < WHCI_QSET_TD_MAX; i++) {
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seq_printf(s, " %c%c TD[%d]: sts: %08x opts: %08x ptr: %08x\n",
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i == qset->td_start ? 'S' : ' ',
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i == qset->td_end ? 'E' : ' ',
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i, qset->qtd[i].status, qset->qtd[i].options,
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(u32)qset->qtd[i].page_list_ptr);
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}
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seq_printf(s, " ntds: %d\n", qset->ntds);
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list_for_each_entry(std, &qset->stds, list_node) {
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if (urb != std->urb) {
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urb = std->urb;
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seq_printf(s, " urb %p transferred: %d bytes\n", urb,
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urb->actual_length);
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}
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if (std->qtd)
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seq_printf(s, " sTD[%td]: %zu bytes @ %08x\n",
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std->qtd - &qset->qtd[0],
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std->len, std->num_pointers ?
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(u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr);
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else
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seq_printf(s, " sTD[-]: %zd bytes @ %08x\n",
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std->len, std->num_pointers ?
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(u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr);
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}
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}
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static int di_print(struct seq_file *s, void *p)
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{
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struct whc *whc = s->private;
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char buf[72];
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int d;
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for (d = 0; d < whc->n_devices; d++) {
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struct di_buf_entry *di = &whc->di_buf[d];
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bitmap_scnprintf(buf, sizeof(buf),
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(unsigned long *)di->availability_info, UWB_NUM_MAS);
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seq_printf(s, "DI[%d]\n", d);
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seq_printf(s, " availability: %s\n", buf);
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seq_printf(s, " %c%c key idx: %d dev addr: %d\n",
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(di->addr_sec_info & WHC_DI_SECURE) ? 'S' : ' ',
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(di->addr_sec_info & WHC_DI_DISABLE) ? 'D' : ' ',
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(di->addr_sec_info & WHC_DI_KEY_IDX_MASK) >> 8,
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(di->addr_sec_info & WHC_DI_DEV_ADDR_MASK));
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}
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return 0;
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}
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static int asl_print(struct seq_file *s, void *p)
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{
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struct whc *whc = s->private;
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struct whc_qset *qset;
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list_for_each_entry(qset, &whc->async_list, list_node) {
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qset_print(s, qset);
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}
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return 0;
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}
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static int pzl_print(struct seq_file *s, void *p)
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{
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struct whc *whc = s->private;
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struct whc_qset *qset;
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int period;
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for (period = 0; period < 5; period++) {
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seq_printf(s, "Period %d\n", period);
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list_for_each_entry(qset, &whc->periodic_list[period], list_node) {
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qset_print(s, qset);
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}
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}
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return 0;
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}
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static int di_open(struct inode *inode, struct file *file)
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{
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return single_open(file, di_print, inode->i_private);
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}
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static int asl_open(struct inode *inode, struct file *file)
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{
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return single_open(file, asl_print, inode->i_private);
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}
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static int pzl_open(struct inode *inode, struct file *file)
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{
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return single_open(file, pzl_print, inode->i_private);
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}
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static const struct file_operations di_fops = {
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.open = di_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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.owner = THIS_MODULE,
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};
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static const struct file_operations asl_fops = {
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.open = asl_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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.owner = THIS_MODULE,
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};
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static const struct file_operations pzl_fops = {
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.open = pzl_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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.owner = THIS_MODULE,
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};
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void whc_dbg_init(struct whc *whc)
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{
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if (whc->wusbhc.pal.debugfs_dir == NULL)
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return;
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whc->dbg = kzalloc(sizeof(struct whc_dbg), GFP_KERNEL);
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if (whc->dbg == NULL)
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return;
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whc->dbg->di_f = debugfs_create_file("di", 0444,
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whc->wusbhc.pal.debugfs_dir, whc,
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&di_fops);
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whc->dbg->asl_f = debugfs_create_file("asl", 0444,
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whc->wusbhc.pal.debugfs_dir, whc,
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&asl_fops);
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whc->dbg->pzl_f = debugfs_create_file("pzl", 0444,
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whc->wusbhc.pal.debugfs_dir, whc,
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&pzl_fops);
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}
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void whc_dbg_clean_up(struct whc *whc)
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{
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if (whc->dbg) {
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debugfs_remove(whc->dbg->pzl_f);
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debugfs_remove(whc->dbg->asl_f);
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debugfs_remove(whc->dbg->di_f);
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kfree(whc->dbg);
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}
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}
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