1dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel/*
2dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel * Wireless Host Controller (WHC) debug.
3dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel *
4dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
5dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel *
6dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel * This program is free software; you can redistribute it and/or
7dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel * modify it under the terms of the GNU General Public License version
8dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel * 2 as published by the Free Software Foundation.
9dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel *
10dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel * This program is distributed in the hope that it will be useful,
11dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel * but WITHOUT ANY WARRANTY; without even the implied warranty of
12dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel * GNU General Public License for more details.
14dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel *
15dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel * You should have received a copy of the GNU General Public License
16dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel * along with this program.  If not, see <http://www.gnu.org/licenses/>.
17dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel */
185a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h>
19dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel#include <linux/kernel.h>
20dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel#include <linux/debugfs.h>
21dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel#include <linux/seq_file.h>
22f940fcd8eadfe5b909a1474b57de7755edeee62bPaul Gortmaker#include <linux/export.h>
23dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
24dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel#include "../../wusbcore/wusbhc.h"
25dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
26dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel#include "whcd.h"
27dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
28dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabelstruct whc_dbg {
29dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	struct dentry *di_f;
30dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	struct dentry *asl_f;
31dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	struct dentry *pzl_f;
32dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel};
33dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
34277aa97254533c7e49a04244dfbdccbae70a7f0eBill Pembertonstatic void qset_print(struct seq_file *s, struct whc_qset *qset)
35dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel{
36d19fc291929aae528a40dd17c71a81f26254715dDavid Vrabel	static const char *qh_type[] = {
37d19fc291929aae528a40dd17c71a81f26254715dDavid Vrabel		"ctrl", "isoc", "bulk", "intr", "rsvd", "rsvd", "rsvd", "lpintr", };
38dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	struct whc_std *std;
39dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	struct urb *urb = NULL;
40dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	int i;
41dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
42d19fc291929aae528a40dd17c71a81f26254715dDavid Vrabel	seq_printf(s, "qset %08x", (u32)qset->qset_dma);
43d19fc291929aae528a40dd17c71a81f26254715dDavid Vrabel	if (&qset->list_node == qset->whc->async_list.prev) {
44d19fc291929aae528a40dd17c71a81f26254715dDavid Vrabel		seq_printf(s, " (dummy)\n");
45d19fc291929aae528a40dd17c71a81f26254715dDavid Vrabel	} else {
46d19fc291929aae528a40dd17c71a81f26254715dDavid Vrabel		seq_printf(s, " ep%d%s-%s maxpkt: %d\n",
47d19fc291929aae528a40dd17c71a81f26254715dDavid Vrabel			   qset->qh.info1 & 0x0f,
48d19fc291929aae528a40dd17c71a81f26254715dDavid Vrabel			   (qset->qh.info1 >> 4) & 0x1 ? "in" : "out",
49d19fc291929aae528a40dd17c71a81f26254715dDavid Vrabel			   qh_type[(qset->qh.info1 >> 5) & 0x7],
50d19fc291929aae528a40dd17c71a81f26254715dDavid Vrabel			   (qset->qh.info1 >> 16) & 0xffff);
51d19fc291929aae528a40dd17c71a81f26254715dDavid Vrabel	}
52dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	seq_printf(s, "  -> %08x\n", (u32)qset->qh.link);
53dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	seq_printf(s, "  info: %08x %08x %08x\n",
54d19fc291929aae528a40dd17c71a81f26254715dDavid Vrabel		   qset->qh.info1, qset->qh.info2,  qset->qh.info3);
55d19fc291929aae528a40dd17c71a81f26254715dDavid Vrabel	seq_printf(s, "  sts: %04x errs: %d curwin: %08x\n",
56d19fc291929aae528a40dd17c71a81f26254715dDavid Vrabel		   qset->qh.status, qset->qh.err_count, qset->qh.cur_window);
57dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	seq_printf(s, "  TD: sts: %08x opts: %08x\n",
58d19fc291929aae528a40dd17c71a81f26254715dDavid Vrabel		   qset->qh.overlay.qtd.status, qset->qh.overlay.qtd.options);
59dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
60dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	for (i = 0; i < WHCI_QSET_TD_MAX; i++) {
61dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel		seq_printf(s, "  %c%c TD[%d]: sts: %08x opts: %08x ptr: %08x\n",
62dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel			i == qset->td_start ? 'S' : ' ',
63dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel			i == qset->td_end ? 'E' : ' ',
64dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel			i, qset->qtd[i].status, qset->qtd[i].options,
65dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel			(u32)qset->qtd[i].page_list_ptr);
66dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	}
67dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	seq_printf(s, "  ntds: %d\n", qset->ntds);
68dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	list_for_each_entry(std, &qset->stds, list_node) {
69dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel		if (urb != std->urb) {
70dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel			urb = std->urb;
71dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel			seq_printf(s, "  urb %p transferred: %d bytes\n", urb,
72dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel				urb->actual_length);
73dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel		}
74dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel		if (std->qtd)
75dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel			seq_printf(s, "    sTD[%td]: %zu bytes @ %08x\n",
76dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel				std->qtd - &qset->qtd[0],
77dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel				std->len, std->num_pointers ?
78dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel				(u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr);
79dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel		else
80dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel			seq_printf(s, "    sTD[-]: %zd bytes @ %08x\n",
81dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel				std->len, std->num_pointers ?
82dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel				(u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr);
83dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	}
84dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel}
85dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
86dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabelstatic int di_print(struct seq_file *s, void *p)
87dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel{
88dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	struct whc *whc = s->private;
89dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	char buf[72];
90dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	int d;
91dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
92dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	for (d = 0; d < whc->n_devices; d++) {
93dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel		struct di_buf_entry *di = &whc->di_buf[d];
94dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
95dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel		bitmap_scnprintf(buf, sizeof(buf),
96dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel				 (unsigned long *)di->availability_info, UWB_NUM_MAS);
97dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
98dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel		seq_printf(s, "DI[%d]\n", d);
99dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel		seq_printf(s, "  availability: %s\n", buf);
100dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel		seq_printf(s, "  %c%c key idx: %d dev addr: %d\n",
101dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel			   (di->addr_sec_info & WHC_DI_SECURE) ? 'S' : ' ',
102dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel			   (di->addr_sec_info & WHC_DI_DISABLE) ? 'D' : ' ',
103dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel			   (di->addr_sec_info & WHC_DI_KEY_IDX_MASK) >> 8,
104dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel			   (di->addr_sec_info & WHC_DI_DEV_ADDR_MASK));
105dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	}
106dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	return 0;
107dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel}
108dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
109dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabelstatic int asl_print(struct seq_file *s, void *p)
110dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel{
111dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	struct whc *whc = s->private;
112dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	struct whc_qset *qset;
113dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
114dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	list_for_each_entry(qset, &whc->async_list, list_node) {
115dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel		qset_print(s, qset);
116dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	}
117dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
118dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	return 0;
119dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel}
120dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
121dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabelstatic int pzl_print(struct seq_file *s, void *p)
122dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel{
123dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	struct whc *whc = s->private;
124dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	struct whc_qset *qset;
125dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	int period;
126dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
127dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	for (period = 0; period < 5; period++) {
128dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel		seq_printf(s, "Period %d\n", period);
129dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel		list_for_each_entry(qset, &whc->periodic_list[period], list_node) {
130dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel			qset_print(s, qset);
131dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel		}
132dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	}
133dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	return 0;
134dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel}
135dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
136dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabelstatic int di_open(struct inode *inode, struct file *file)
137dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel{
138dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	return single_open(file, di_print, inode->i_private);
139dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel}
140dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
141dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabelstatic int asl_open(struct inode *inode, struct file *file)
142dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel{
143dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	return single_open(file, asl_print, inode->i_private);
144dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel}
145dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
146dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabelstatic int pzl_open(struct inode *inode, struct file *file)
147dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel{
148dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	return single_open(file, pzl_print, inode->i_private);
149dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel}
150dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
151828c09509b9695271bcbdc53e9fc9a6a737148d2Alexey Dobriyanstatic const struct file_operations di_fops = {
152dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	.open    = di_open,
153dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	.read    = seq_read,
154dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	.llseek  = seq_lseek,
155dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	.release = single_release,
156dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	.owner   = THIS_MODULE,
157dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel};
158dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
159828c09509b9695271bcbdc53e9fc9a6a737148d2Alexey Dobriyanstatic const struct file_operations asl_fops = {
160dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	.open    = asl_open,
161dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	.read    = seq_read,
162dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	.llseek  = seq_lseek,
163dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	.release = single_release,
164dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	.owner   = THIS_MODULE,
165dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel};
166dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
167828c09509b9695271bcbdc53e9fc9a6a737148d2Alexey Dobriyanstatic const struct file_operations pzl_fops = {
168dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	.open    = pzl_open,
169dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	.read    = seq_read,
170dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	.llseek  = seq_lseek,
171dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	.release = single_release,
172dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	.owner   = THIS_MODULE,
173dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel};
174dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
175dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabelvoid whc_dbg_init(struct whc *whc)
176dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel{
177dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	if (whc->wusbhc.pal.debugfs_dir == NULL)
178dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel		return;
179dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
180dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	whc->dbg = kzalloc(sizeof(struct whc_dbg), GFP_KERNEL);
181dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	if (whc->dbg == NULL)
182dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel		return;
183dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
184dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	whc->dbg->di_f = debugfs_create_file("di", 0444,
185dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel					      whc->wusbhc.pal.debugfs_dir, whc,
186dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel					      &di_fops);
187dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	whc->dbg->asl_f = debugfs_create_file("asl", 0444,
188dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel					      whc->wusbhc.pal.debugfs_dir, whc,
189dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel					      &asl_fops);
190dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	whc->dbg->pzl_f = debugfs_create_file("pzl", 0444,
191dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel					      whc->wusbhc.pal.debugfs_dir, whc,
192dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel					      &pzl_fops);
193dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel}
194dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel
195dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabelvoid whc_dbg_clean_up(struct whc *whc)
196dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel{
197dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	if (whc->dbg) {
198dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel		debugfs_remove(whc->dbg->pzl_f);
199dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel		debugfs_remove(whc->dbg->asl_f);
200dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel		debugfs_remove(whc->dbg->di_f);
201dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel		kfree(whc->dbg);
202dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel	}
203dcc7461eef7341e84e2f7274f904ce01a43b2506David Vrabel}
204