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// SPDX-License-Identifier: GPL-2.0
/*
* Wireless Host Controller (WHC) debug.
*
* Copyright (C) 2008 Cambridge Silicon Radio Ltd.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/export.h>
#include "../../wusbcore/wusbhc.h"
#include "whcd.h"
struct whc_dbg {
struct dentry *di_f;
struct dentry *asl_f;
struct dentry *pzl_f;
};
static void qset_print(struct seq_file *s, struct whc_qset *qset)
{
static const char *qh_type[] = {
"ctrl", "isoc", "bulk", "intr", "rsvd", "rsvd", "rsvd", "lpintr", };
struct whc_std *std;
struct urb *urb = NULL;
int i;
seq_printf(s, "qset %08x", (u32)qset->qset_dma);
if (&qset->list_node == qset->whc->async_list.prev) {
seq_printf(s, " (dummy)\n");
} else {
seq_printf(s, " ep%d%s-%s maxpkt: %d\n",
qset->qh.info1 & 0x0f,
(qset->qh.info1 >> 4) & 0x1 ? "in" : "out",
qh_type[(qset->qh.info1 >> 5) & 0x7],
(qset->qh.info1 >> 16) & 0xffff);
}
seq_printf(s, " -> %08x\n", (u32)qset->qh.link);
seq_printf(s, " info: %08x %08x %08x\n",
qset->qh.info1, qset->qh.info2, qset->qh.info3);
seq_printf(s, " sts: %04x errs: %d curwin: %08x\n",
qset->qh.status, qset->qh.err_count, qset->qh.cur_window);
seq_printf(s, " TD: sts: %08x opts: %08x\n",
qset->qh.overlay.qtd.status, qset->qh.overlay.qtd.options);
for (i = 0; i < WHCI_QSET_TD_MAX; i++) {
seq_printf(s, " %c%c TD[%d]: sts: %08x opts: %08x ptr: %08x\n",
i == qset->td_start ? 'S' : ' ',
i == qset->td_end ? 'E' : ' ',
i, qset->qtd[i].status, qset->qtd[i].options,
(u32)qset->qtd[i].page_list_ptr);
}
seq_printf(s, " ntds: %d\n", qset->ntds);
list_for_each_entry(std, &qset->stds, list_node) {
if (urb != std->urb) {
urb = std->urb;
seq_printf(s, " urb %p transferred: %d bytes\n", urb,
urb->actual_length);
}
if (std->qtd)
seq_printf(s, " sTD[%td]: %zu bytes @ %08x\n",
std->qtd - &qset->qtd[0],
std->len, std->num_pointers ?
(u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr);
else
seq_printf(s, " sTD[-]: %zd bytes @ %08x\n",
std->len, std->num_pointers ?
(u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr);
}
}
static int di_print(struct seq_file *s, void *p)
{
struct whc *whc = s->private;
int d;
for (d = 0; d < whc->n_devices; d++) {
struct di_buf_entry *di = &whc->di_buf[d];
seq_printf(s, "DI[%d]\n", d);
seq_printf(s, " availability: %*pb\n",
UWB_NUM_MAS, (unsigned long *)di->availability_info);
seq_printf(s, " %c%c key idx: %d dev addr: %d\n",
(di->addr_sec_info & WHC_DI_SECURE) ? 'S' : ' ',
(di->addr_sec_info & WHC_DI_DISABLE) ? 'D' : ' ',
(di->addr_sec_info & WHC_DI_KEY_IDX_MASK) >> 8,
(di->addr_sec_info & WHC_DI_DEV_ADDR_MASK));
}
return 0;
}
static int asl_print(struct seq_file *s, void *p)
{
struct whc *whc = s->private;
struct whc_qset *qset;
list_for_each_entry(qset, &whc->async_list, list_node) {
qset_print(s, qset);
}
return 0;
}
static int pzl_print(struct seq_file *s, void *p)
{
struct whc *whc = s->private;
struct whc_qset *qset;
int period;
for (period = 0; period < 5; period++) {
seq_printf(s, "Period %d\n", period);
list_for_each_entry(qset, &whc->periodic_list[period], list_node) {
qset_print(s, qset);
}
}
return 0;
}
static int di_open(struct inode *inode, struct file *file)
{
return single_open(file, di_print, inode->i_private);
}
static int asl_open(struct inode *inode, struct file *file)
{
return single_open(file, asl_print, inode->i_private);
}
static int pzl_open(struct inode *inode, struct file *file)
{
return single_open(file, pzl_print, inode->i_private);
}
static const struct file_operations di_fops = {
.open = di_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
};
static const struct file_operations asl_fops = {
.open = asl_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
};
static const struct file_operations pzl_fops = {
.open = pzl_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
};
void whc_dbg_init(struct whc *whc)
{
if (whc->wusbhc.pal.debugfs_dir == NULL)
return;
whc->dbg = kzalloc(sizeof(struct whc_dbg), GFP_KERNEL);
if (whc->dbg == NULL)
return;
whc->dbg->di_f = debugfs_create_file("di", 0444,
whc->wusbhc.pal.debugfs_dir, whc,
&di_fops);
whc->dbg->asl_f = debugfs_create_file("asl", 0444,
whc->wusbhc.pal.debugfs_dir, whc,
&asl_fops);
whc->dbg->pzl_f = debugfs_create_file("pzl", 0444,
whc->wusbhc.pal.debugfs_dir, whc,
&pzl_fops);
}
void whc_dbg_clean_up(struct whc *whc)
{
if (whc->dbg) {
debugfs_remove(whc->dbg->pzl_f);
debugfs_remove(whc->dbg->asl_f);
debugfs_remove(whc->dbg->di_f);
kfree(whc->dbg);
}
}
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