Commit | Line | Data |
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e443b333 | 1 | #include <linux/kernel.h> |
3c37bb68 AS |
2 | #include <linux/device.h> |
3 | #include <linux/types.h> | |
4 | #include <linux/spinlock.h> | |
2d651289 AS |
5 | #include <linux/debugfs.h> |
6 | #include <linux/seq_file.h> | |
7 | #include <linux/uaccess.h> | |
e443b333 AS |
8 | #include <linux/usb/ch9.h> |
9 | #include <linux/usb/gadget.h> | |
e443b333 AS |
10 | |
11 | #include "ci.h" | |
12 | #include "udc.h" | |
13 | #include "bits.h" | |
14 | #include "debug.h" | |
15 | ||
e443b333 | 16 | /** |
2d651289 | 17 | * ci_device_show: prints information about device capabilities and status |
e443b333 | 18 | */ |
2d651289 | 19 | static int ci_device_show(struct seq_file *s, void *data) |
e443b333 | 20 | { |
2d651289 AS |
21 | struct ci13xxx *ci = s->private; |
22 | struct usb_gadget *gadget = &ci->gadget; | |
e443b333 | 23 | |
2d651289 AS |
24 | seq_printf(s, "speed = %d\n", gadget->speed); |
25 | seq_printf(s, "max_speed = %d\n", gadget->max_speed); | |
26 | seq_printf(s, "is_otg = %d\n", gadget->is_otg); | |
27 | seq_printf(s, "is_a_peripheral = %d\n", gadget->is_a_peripheral); | |
28 | seq_printf(s, "b_hnp_enable = %d\n", gadget->b_hnp_enable); | |
29 | seq_printf(s, "a_hnp_support = %d\n", gadget->a_hnp_support); | |
30 | seq_printf(s, "a_alt_hnp_support = %d\n", gadget->a_alt_hnp_support); | |
31 | seq_printf(s, "name = %s\n", | |
32 | (gadget->name ? gadget->name : "")); | |
33 | ||
34 | if (!ci->driver) | |
35 | return 0; | |
e443b333 | 36 | |
2d651289 AS |
37 | seq_printf(s, "gadget function = %s\n", |
38 | (ci->driver->function ? ci->driver->function : "")); | |
39 | seq_printf(s, "gadget max speed = %d\n", ci->driver->max_speed); | |
e443b333 | 40 | |
e443b333 AS |
41 | return 0; |
42 | } | |
43 | ||
2d651289 | 44 | static int ci_device_open(struct inode *inode, struct file *file) |
e443b333 | 45 | { |
2d651289 | 46 | return single_open(file, ci_device_show, inode->i_private); |
e443b333 AS |
47 | } |
48 | ||
2d651289 AS |
49 | static const struct file_operations ci_device_fops = { |
50 | .open = ci_device_open, | |
51 | .read = seq_read, | |
52 | .llseek = seq_lseek, | |
53 | .release = single_release, | |
54 | }; | |
e443b333 | 55 | |
e443b333 | 56 | /** |
2d651289 | 57 | * ci_port_test_show: reads port test mode |
e443b333 | 58 | */ |
2d651289 | 59 | static int ci_port_test_show(struct seq_file *s, void *data) |
e443b333 | 60 | { |
2d651289 | 61 | struct ci13xxx *ci = s->private; |
e443b333 AS |
62 | unsigned long flags; |
63 | unsigned mode; | |
64 | ||
26c696c6 RZ |
65 | spin_lock_irqsave(&ci->lock, flags); |
66 | mode = hw_port_test_get(ci); | |
67 | spin_unlock_irqrestore(&ci->lock, flags); | |
e443b333 | 68 | |
2d651289 AS |
69 | seq_printf(s, "mode = %u\n", mode); |
70 | ||
71 | return 0; | |
e443b333 AS |
72 | } |
73 | ||
74 | /** | |
2d651289 | 75 | * ci_port_test_write: writes port test mode |
e443b333 | 76 | */ |
2d651289 AS |
77 | static ssize_t ci_port_test_write(struct file *file, const char __user *ubuf, |
78 | size_t count, loff_t *ppos) | |
e443b333 | 79 | { |
2d651289 AS |
80 | struct seq_file *s = file->private_data; |
81 | struct ci13xxx *ci = s->private; | |
e443b333 AS |
82 | unsigned long flags; |
83 | unsigned mode; | |
2d651289 AS |
84 | char buf[32]; |
85 | int ret; | |
e443b333 | 86 | |
2d651289 AS |
87 | if (copy_from_user(buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) |
88 | return -EFAULT; | |
e443b333 | 89 | |
2d651289 AS |
90 | if (sscanf(buf, "%u", &mode) != 1) |
91 | return -EINVAL; | |
e443b333 | 92 | |
26c696c6 | 93 | spin_lock_irqsave(&ci->lock, flags); |
2d651289 | 94 | ret = hw_port_test_set(ci, mode); |
26c696c6 | 95 | spin_unlock_irqrestore(&ci->lock, flags); |
e443b333 | 96 | |
2d651289 | 97 | return ret ? ret : count; |
e443b333 | 98 | } |
2d651289 AS |
99 | |
100 | static int ci_port_test_open(struct inode *inode, struct file *file) | |
101 | { | |
102 | return single_open(file, ci_port_test_show, inode->i_private); | |
103 | } | |
104 | ||
105 | static const struct file_operations ci_port_test_fops = { | |
106 | .open = ci_port_test_open, | |
107 | .write = ci_port_test_write, | |
108 | .read = seq_read, | |
109 | .llseek = seq_lseek, | |
110 | .release = single_release, | |
111 | }; | |
e443b333 AS |
112 | |
113 | /** | |
2d651289 | 114 | * ci_qheads_show: DMA contents of all queue heads |
e443b333 | 115 | */ |
2d651289 | 116 | static int ci_qheads_show(struct seq_file *s, void *data) |
e443b333 | 117 | { |
2d651289 | 118 | struct ci13xxx *ci = s->private; |
e443b333 | 119 | unsigned long flags; |
2d651289 | 120 | unsigned i, j; |
e443b333 | 121 | |
2d651289 AS |
122 | if (ci->role != CI_ROLE_GADGET) { |
123 | seq_printf(s, "not in gadget mode\n"); | |
e443b333 AS |
124 | return 0; |
125 | } | |
126 | ||
26c696c6 RZ |
127 | spin_lock_irqsave(&ci->lock, flags); |
128 | for (i = 0; i < ci->hw_ep_max/2; i++) { | |
129 | struct ci13xxx_ep *mEpRx = &ci->ci13xxx_ep[i]; | |
e443b333 | 130 | struct ci13xxx_ep *mEpTx = |
26c696c6 | 131 | &ci->ci13xxx_ep[i + ci->hw_ep_max/2]; |
2d651289 AS |
132 | seq_printf(s, "EP=%02i: RX=%08X TX=%08X\n", |
133 | i, (u32)mEpRx->qh.dma, (u32)mEpTx->qh.dma); | |
134 | for (j = 0; j < (sizeof(struct ci13xxx_qh)/sizeof(u32)); j++) | |
135 | seq_printf(s, " %04X: %08X %08X\n", j, | |
136 | *((u32 *)mEpRx->qh.ptr + j), | |
137 | *((u32 *)mEpTx->qh.ptr + j)); | |
e443b333 | 138 | } |
26c696c6 | 139 | spin_unlock_irqrestore(&ci->lock, flags); |
e443b333 | 140 | |
2d651289 | 141 | return 0; |
e443b333 | 142 | } |
e443b333 | 143 | |
2d651289 | 144 | static int ci_qheads_open(struct inode *inode, struct file *file) |
e443b333 | 145 | { |
2d651289 | 146 | return single_open(file, ci_qheads_show, inode->i_private); |
e443b333 AS |
147 | } |
148 | ||
2d651289 AS |
149 | static const struct file_operations ci_qheads_fops = { |
150 | .open = ci_qheads_open, | |
151 | .read = seq_read, | |
152 | .llseek = seq_lseek, | |
153 | .release = single_release, | |
154 | }; | |
e443b333 AS |
155 | |
156 | /** | |
2d651289 | 157 | * ci_requests_show: DMA contents of all requests currently queued (all endpts) |
e443b333 | 158 | */ |
2d651289 | 159 | static int ci_requests_show(struct seq_file *s, void *data) |
e443b333 | 160 | { |
2d651289 | 161 | struct ci13xxx *ci = s->private; |
e443b333 AS |
162 | unsigned long flags; |
163 | struct list_head *ptr = NULL; | |
164 | struct ci13xxx_req *req = NULL; | |
2d651289 | 165 | unsigned i, j, qsize = sizeof(struct ci13xxx_td)/sizeof(u32); |
e443b333 | 166 | |
2d651289 AS |
167 | if (ci->role != CI_ROLE_GADGET) { |
168 | seq_printf(s, "not in gadget mode\n"); | |
e443b333 AS |
169 | return 0; |
170 | } | |
171 | ||
26c696c6 RZ |
172 | spin_lock_irqsave(&ci->lock, flags); |
173 | for (i = 0; i < ci->hw_ep_max; i++) | |
2d651289 | 174 | list_for_each(ptr, &ci->ci13xxx_ep[i].qh.queue) { |
e443b333 AS |
175 | req = list_entry(ptr, struct ci13xxx_req, queue); |
176 | ||
2d651289 | 177 | seq_printf(s, "EP=%02i: TD=%08X %s\n", |
ba8618e0 | 178 | i % (ci->hw_ep_max / 2), (u32)req->dma, |
2d651289 | 179 | ((i < ci->hw_ep_max/2) ? "RX" : "TX")); |
e443b333 | 180 | |
2d651289 AS |
181 | for (j = 0; j < qsize; j++) |
182 | seq_printf(s, " %04X: %08X\n", j, | |
183 | *((u32 *)req->ptr + j)); | |
e443b333 | 184 | } |
26c696c6 | 185 | spin_unlock_irqrestore(&ci->lock, flags); |
e443b333 | 186 | |
2d651289 AS |
187 | return 0; |
188 | } | |
189 | ||
190 | static int ci_requests_open(struct inode *inode, struct file *file) | |
191 | { | |
192 | return single_open(file, ci_requests_show, inode->i_private); | |
e443b333 | 193 | } |
2d651289 AS |
194 | |
195 | static const struct file_operations ci_requests_fops = { | |
196 | .open = ci_requests_open, | |
197 | .read = seq_read, | |
198 | .llseek = seq_lseek, | |
199 | .release = single_release, | |
200 | }; | |
e443b333 | 201 | |
c8e333a3 AS |
202 | static int ci_role_show(struct seq_file *s, void *data) |
203 | { | |
204 | struct ci13xxx *ci = s->private; | |
205 | ||
54fd65c0 MT |
206 | if (ci->role != CI_ROLE_END) |
207 | seq_printf(s, "%s\n", ci_role(ci)->name); | |
c8e333a3 AS |
208 | |
209 | return 0; | |
210 | } | |
211 | ||
212 | static ssize_t ci_role_write(struct file *file, const char __user *ubuf, | |
213 | size_t count, loff_t *ppos) | |
214 | { | |
215 | struct seq_file *s = file->private_data; | |
216 | struct ci13xxx *ci = s->private; | |
217 | enum ci_role role; | |
218 | char buf[8]; | |
219 | int ret; | |
220 | ||
221 | if (copy_from_user(buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) | |
222 | return -EFAULT; | |
223 | ||
224 | for (role = CI_ROLE_HOST; role < CI_ROLE_END; role++) | |
225 | if (ci->roles[role] && | |
226 | !strncmp(buf, ci->roles[role]->name, | |
227 | strlen(ci->roles[role]->name))) | |
228 | break; | |
229 | ||
230 | if (role == CI_ROLE_END || role == ci->role) | |
231 | return -EINVAL; | |
232 | ||
233 | ci_role_stop(ci); | |
234 | ret = ci_role_start(ci, role); | |
235 | ||
236 | return ret ? ret : count; | |
237 | } | |
238 | ||
239 | static int ci_role_open(struct inode *inode, struct file *file) | |
240 | { | |
241 | return single_open(file, ci_role_show, inode->i_private); | |
242 | } | |
243 | ||
244 | static const struct file_operations ci_role_fops = { | |
245 | .open = ci_role_open, | |
246 | .write = ci_role_write, | |
247 | .read = seq_read, | |
248 | .llseek = seq_lseek, | |
249 | .release = single_release, | |
250 | }; | |
251 | ||
e443b333 AS |
252 | /** |
253 | * dbg_create_files: initializes the attribute interface | |
2d651289 | 254 | * @ci: device |
e443b333 AS |
255 | * |
256 | * This function returns an error code | |
257 | */ | |
2d651289 | 258 | int dbg_create_files(struct ci13xxx *ci) |
e443b333 | 259 | { |
2d651289 AS |
260 | struct dentry *dent; |
261 | ||
262 | ci->debugfs = debugfs_create_dir(dev_name(ci->dev), NULL); | |
263 | if (!ci->debugfs) | |
264 | return -ENOMEM; | |
265 | ||
266 | dent = debugfs_create_file("device", S_IRUGO, ci->debugfs, ci, | |
267 | &ci_device_fops); | |
268 | if (!dent) | |
269 | goto err; | |
270 | ||
271 | dent = debugfs_create_file("port_test", S_IRUGO | S_IWUSR, ci->debugfs, | |
272 | ci, &ci_port_test_fops); | |
273 | if (!dent) | |
274 | goto err; | |
275 | ||
276 | dent = debugfs_create_file("qheads", S_IRUGO, ci->debugfs, ci, | |
277 | &ci_qheads_fops); | |
278 | if (!dent) | |
279 | goto err; | |
280 | ||
281 | dent = debugfs_create_file("requests", S_IRUGO, ci->debugfs, ci, | |
282 | &ci_requests_fops); | |
c8e333a3 AS |
283 | if (!dent) |
284 | goto err; | |
285 | ||
286 | dent = debugfs_create_file("role", S_IRUGO | S_IWUSR, ci->debugfs, ci, | |
287 | &ci_role_fops); | |
2d651289 AS |
288 | if (dent) |
289 | return 0; | |
290 | err: | |
291 | debugfs_remove_recursive(ci->debugfs); | |
292 | return -ENOMEM; | |
e443b333 AS |
293 | } |
294 | ||
295 | /** | |
296 | * dbg_remove_files: destroys the attribute interface | |
2d651289 | 297 | * @ci: device |
e443b333 | 298 | */ |
2d651289 | 299 | void dbg_remove_files(struct ci13xxx *ci) |
e443b333 | 300 | { |
2d651289 | 301 | debugfs_remove_recursive(ci->debugfs); |
e443b333 | 302 | } |