Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
[linux-2.6] / drivers / usb / host / whci / debug.c
1 /*
2  * Wireless Host Controller (WHC) debug.
3  *
4  * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License version
8  * 2 as published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
17  */
18 #include <linux/kernel.h>
19 #include <linux/debugfs.h>
20 #include <linux/seq_file.h>
21
22 #include "../../wusbcore/wusbhc.h"
23
24 #include "whcd.h"
25
26 struct whc_dbg {
27         struct dentry *di_f;
28         struct dentry *asl_f;
29         struct dentry *pzl_f;
30 };
31
32 void qset_print(struct seq_file *s, struct whc_qset *qset)
33 {
34         struct whc_std *std;
35         struct urb *urb = NULL;
36         int i;
37
38         seq_printf(s, "qset %08x\n", (u32)qset->qset_dma);
39         seq_printf(s, "  -> %08x\n", (u32)qset->qh.link);
40         seq_printf(s, "  info: %08x %08x %08x\n",
41                 qset->qh.info1, qset->qh.info2,  qset->qh.info3);
42         seq_printf(s, "  sts: %04x errs: %d\n", qset->qh.status, qset->qh.err_count);
43         seq_printf(s, "  TD: sts: %08x opts: %08x\n",
44                 qset->qh.overlay.qtd.status, qset->qh.overlay.qtd.options);
45
46         for (i = 0; i < WHCI_QSET_TD_MAX; i++) {
47                 seq_printf(s, "  %c%c TD[%d]: sts: %08x opts: %08x ptr: %08x\n",
48                         i == qset->td_start ? 'S' : ' ',
49                         i == qset->td_end ? 'E' : ' ',
50                         i, qset->qtd[i].status, qset->qtd[i].options,
51                         (u32)qset->qtd[i].page_list_ptr);
52         }
53         seq_printf(s, "  ntds: %d\n", qset->ntds);
54         list_for_each_entry(std, &qset->stds, list_node) {
55                 if (urb != std->urb) {
56                         urb = std->urb;
57                         seq_printf(s, "  urb %p transferred: %d bytes\n", urb,
58                                 urb->actual_length);
59                 }
60                 if (std->qtd)
61                         seq_printf(s, "    sTD[%td]: %zu bytes @ %08x\n",
62                                 std->qtd - &qset->qtd[0],
63                                 std->len, std->num_pointers ?
64                                 (u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr);
65                 else
66                         seq_printf(s, "    sTD[-]: %zd bytes @ %08x\n",
67                                 std->len, std->num_pointers ?
68                                 (u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr);
69         }
70 }
71
72 static int di_print(struct seq_file *s, void *p)
73 {
74         struct whc *whc = s->private;
75         char buf[72];
76         int d;
77
78         for (d = 0; d < whc->n_devices; d++) {
79                 struct di_buf_entry *di = &whc->di_buf[d];
80
81                 bitmap_scnprintf(buf, sizeof(buf),
82                                  (unsigned long *)di->availability_info, UWB_NUM_MAS);
83
84                 seq_printf(s, "DI[%d]\n", d);
85                 seq_printf(s, "  availability: %s\n", buf);
86                 seq_printf(s, "  %c%c key idx: %d dev addr: %d\n",
87                            (di->addr_sec_info & WHC_DI_SECURE) ? 'S' : ' ',
88                            (di->addr_sec_info & WHC_DI_DISABLE) ? 'D' : ' ',
89                            (di->addr_sec_info & WHC_DI_KEY_IDX_MASK) >> 8,
90                            (di->addr_sec_info & WHC_DI_DEV_ADDR_MASK));
91         }
92         return 0;
93 }
94
95 static int asl_print(struct seq_file *s, void *p)
96 {
97         struct whc *whc = s->private;
98         struct whc_qset *qset;
99
100         list_for_each_entry(qset, &whc->async_list, list_node) {
101                 qset_print(s, qset);
102         }
103
104         return 0;
105 }
106
107 static int pzl_print(struct seq_file *s, void *p)
108 {
109         struct whc *whc = s->private;
110         struct whc_qset *qset;
111         int period;
112
113         for (period = 0; period < 5; period++) {
114                 seq_printf(s, "Period %d\n", period);
115                 list_for_each_entry(qset, &whc->periodic_list[period], list_node) {
116                         qset_print(s, qset);
117                 }
118         }
119         return 0;
120 }
121
122 static int di_open(struct inode *inode, struct file *file)
123 {
124         return single_open(file, di_print, inode->i_private);
125 }
126
127 static int asl_open(struct inode *inode, struct file *file)
128 {
129         return single_open(file, asl_print, inode->i_private);
130 }
131
132 static int pzl_open(struct inode *inode, struct file *file)
133 {
134         return single_open(file, pzl_print, inode->i_private);
135 }
136
137 static struct file_operations di_fops = {
138         .open    = di_open,
139         .read    = seq_read,
140         .llseek  = seq_lseek,
141         .release = single_release,
142         .owner   = THIS_MODULE,
143 };
144
145 static struct file_operations asl_fops = {
146         .open    = asl_open,
147         .read    = seq_read,
148         .llseek  = seq_lseek,
149         .release = single_release,
150         .owner   = THIS_MODULE,
151 };
152
153 static struct file_operations pzl_fops = {
154         .open    = pzl_open,
155         .read    = seq_read,
156         .llseek  = seq_lseek,
157         .release = single_release,
158         .owner   = THIS_MODULE,
159 };
160
161 void whc_dbg_init(struct whc *whc)
162 {
163         if (whc->wusbhc.pal.debugfs_dir == NULL)
164                 return;
165
166         whc->dbg = kzalloc(sizeof(struct whc_dbg), GFP_KERNEL);
167         if (whc->dbg == NULL)
168                 return;
169
170         whc->dbg->di_f = debugfs_create_file("di", 0444,
171                                               whc->wusbhc.pal.debugfs_dir, whc,
172                                               &di_fops);
173         whc->dbg->asl_f = debugfs_create_file("asl", 0444,
174                                               whc->wusbhc.pal.debugfs_dir, whc,
175                                               &asl_fops);
176         whc->dbg->pzl_f = debugfs_create_file("pzl", 0444,
177                                               whc->wusbhc.pal.debugfs_dir, whc,
178                                               &pzl_fops);
179 }
180
181 void whc_dbg_clean_up(struct whc *whc)
182 {
183         if (whc->dbg) {
184                 debugfs_remove(whc->dbg->pzl_f);
185                 debugfs_remove(whc->dbg->asl_f);
186                 debugfs_remove(whc->dbg->di_f);
187                 kfree(whc->dbg);
188         }
189 }