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 | { |
8e22978c | 21 | struct ci_hdrc *ci = s->private; |
2d651289 | 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 | { |
8e22978c | 61 | struct ci_hdrc *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 | 80 | struct seq_file *s = file->private_data; |
8e22978c | 81 | struct ci_hdrc *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 | { |
8e22978c | 118 | struct ci_hdrc *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++) { | |
8e22978c AS |
129 | struct ci_hw_ep *hweprx = &ci->ci_hw_ep[i]; |
130 | struct ci_hw_ep *hweptx = | |
131 | &ci->ci_hw_ep[i + ci->hw_ep_max/2]; | |
2d651289 | 132 | seq_printf(s, "EP=%02i: RX=%08X TX=%08X\n", |
2dbc5c4c | 133 | i, (u32)hweprx->qh.dma, (u32)hweptx->qh.dma); |
8e22978c | 134 | for (j = 0; j < (sizeof(struct ci_hw_qh)/sizeof(u32)); j++) |
2d651289 | 135 | seq_printf(s, " %04X: %08X %08X\n", j, |
2dbc5c4c AS |
136 | *((u32 *)hweprx->qh.ptr + j), |
137 | *((u32 *)hweptx->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 | { |
8e22978c | 161 | struct ci_hdrc *ci = s->private; |
e443b333 AS |
162 | unsigned long flags; |
163 | struct list_head *ptr = NULL; | |
8e22978c | 164 | struct ci_hw_req *req = NULL; |
cc9e6c49 | 165 | struct td_node *node, *tmpnode; |
8e22978c | 166 | unsigned i, j, qsize = sizeof(struct ci_hw_td)/sizeof(u32); |
e443b333 | 167 | |
2d651289 AS |
168 | if (ci->role != CI_ROLE_GADGET) { |
169 | seq_printf(s, "not in gadget mode\n"); | |
e443b333 AS |
170 | return 0; |
171 | } | |
172 | ||
26c696c6 RZ |
173 | spin_lock_irqsave(&ci->lock, flags); |
174 | for (i = 0; i < ci->hw_ep_max; i++) | |
8e22978c AS |
175 | list_for_each(ptr, &ci->ci_hw_ep[i].qh.queue) { |
176 | req = list_entry(ptr, struct ci_hw_req, queue); | |
e443b333 | 177 | |
cc9e6c49 MG |
178 | list_for_each_entry_safe(node, tmpnode, &req->tds, td) { |
179 | seq_printf(s, "EP=%02i: TD=%08X %s\n", | |
180 | i % (ci->hw_ep_max / 2), | |
181 | (u32)node->dma, | |
182 | ((i < ci->hw_ep_max/2) ? | |
183 | "RX" : "TX")); | |
184 | ||
185 | for (j = 0; j < qsize; j++) | |
186 | seq_printf(s, " %04X: %08X\n", j, | |
187 | *((u32 *)node->ptr + j)); | |
188 | } | |
e443b333 | 189 | } |
26c696c6 | 190 | spin_unlock_irqrestore(&ci->lock, flags); |
e443b333 | 191 | |
2d651289 AS |
192 | return 0; |
193 | } | |
194 | ||
195 | static int ci_requests_open(struct inode *inode, struct file *file) | |
196 | { | |
197 | return single_open(file, ci_requests_show, inode->i_private); | |
e443b333 | 198 | } |
2d651289 AS |
199 | |
200 | static const struct file_operations ci_requests_fops = { | |
201 | .open = ci_requests_open, | |
202 | .read = seq_read, | |
203 | .llseek = seq_lseek, | |
204 | .release = single_release, | |
205 | }; | |
e443b333 | 206 | |
c8e333a3 AS |
207 | static int ci_role_show(struct seq_file *s, void *data) |
208 | { | |
8e22978c | 209 | struct ci_hdrc *ci = s->private; |
c8e333a3 AS |
210 | |
211 | seq_printf(s, "%s\n", ci_role(ci)->name); | |
212 | ||
213 | return 0; | |
214 | } | |
215 | ||
216 | static ssize_t ci_role_write(struct file *file, const char __user *ubuf, | |
217 | size_t count, loff_t *ppos) | |
218 | { | |
219 | struct seq_file *s = file->private_data; | |
8e22978c | 220 | struct ci_hdrc *ci = s->private; |
c8e333a3 AS |
221 | enum ci_role role; |
222 | char buf[8]; | |
223 | int ret; | |
224 | ||
225 | if (copy_from_user(buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) | |
226 | return -EFAULT; | |
227 | ||
228 | for (role = CI_ROLE_HOST; role < CI_ROLE_END; role++) | |
229 | if (ci->roles[role] && | |
230 | !strncmp(buf, ci->roles[role]->name, | |
231 | strlen(ci->roles[role]->name))) | |
232 | break; | |
233 | ||
234 | if (role == CI_ROLE_END || role == ci->role) | |
235 | return -EINVAL; | |
236 | ||
237 | ci_role_stop(ci); | |
238 | ret = ci_role_start(ci, role); | |
239 | ||
240 | return ret ? ret : count; | |
241 | } | |
242 | ||
243 | static int ci_role_open(struct inode *inode, struct file *file) | |
244 | { | |
245 | return single_open(file, ci_role_show, inode->i_private); | |
246 | } | |
247 | ||
248 | static const struct file_operations ci_role_fops = { | |
249 | .open = ci_role_open, | |
250 | .write = ci_role_write, | |
251 | .read = seq_read, | |
252 | .llseek = seq_lseek, | |
253 | .release = single_release, | |
254 | }; | |
255 | ||
e443b333 AS |
256 | /** |
257 | * dbg_create_files: initializes the attribute interface | |
2d651289 | 258 | * @ci: device |
e443b333 AS |
259 | * |
260 | * This function returns an error code | |
261 | */ | |
8e22978c | 262 | int dbg_create_files(struct ci_hdrc *ci) |
e443b333 | 263 | { |
2d651289 AS |
264 | struct dentry *dent; |
265 | ||
266 | ci->debugfs = debugfs_create_dir(dev_name(ci->dev), NULL); | |
267 | if (!ci->debugfs) | |
268 | return -ENOMEM; | |
269 | ||
270 | dent = debugfs_create_file("device", S_IRUGO, ci->debugfs, ci, | |
271 | &ci_device_fops); | |
272 | if (!dent) | |
273 | goto err; | |
274 | ||
275 | dent = debugfs_create_file("port_test", S_IRUGO | S_IWUSR, ci->debugfs, | |
276 | ci, &ci_port_test_fops); | |
277 | if (!dent) | |
278 | goto err; | |
279 | ||
280 | dent = debugfs_create_file("qheads", S_IRUGO, ci->debugfs, ci, | |
281 | &ci_qheads_fops); | |
282 | if (!dent) | |
283 | goto err; | |
284 | ||
285 | dent = debugfs_create_file("requests", S_IRUGO, ci->debugfs, ci, | |
286 | &ci_requests_fops); | |
c8e333a3 AS |
287 | if (!dent) |
288 | goto err; | |
289 | ||
290 | dent = debugfs_create_file("role", S_IRUGO | S_IWUSR, ci->debugfs, ci, | |
291 | &ci_role_fops); | |
2d651289 AS |
292 | if (dent) |
293 | return 0; | |
294 | err: | |
295 | debugfs_remove_recursive(ci->debugfs); | |
296 | return -ENOMEM; | |
e443b333 AS |
297 | } |
298 | ||
299 | /** | |
300 | * dbg_remove_files: destroys the attribute interface | |
2d651289 | 301 | * @ci: device |
e443b333 | 302 | */ |
8e22978c | 303 | void dbg_remove_files(struct ci_hdrc *ci) |
e443b333 | 304 | { |
2d651289 | 305 | debugfs_remove_recursive(ci->debugfs); |
e443b333 | 306 | } |