1#include <common.h>
2#include <console.h>
3#include <watchdog.h>
4#include <linux/errno.h>
5#include <linux/usb/ch9.h>
6#include <linux/usb/gadget.h>
7
8#include <usb.h>
9#include "linux-compat.h"
10#include "usb-compat.h"
11#include "musb_core.h"
12#include "musb_host.h"
13#include "musb_gadget.h"
14#include "musb_uboot.h"
15
16#ifdef CONFIG_USB_MUSB_HOST
17struct int_queue {
18 struct usb_host_endpoint hep;
19 struct urb urb;
20};
21
22#if !CONFIG_IS_ENABLED(DM_USB)
23struct musb_host_data musb_host;
24#endif
25
26static void musb_host_complete_urb(struct urb *urb)
27{
28 urb->dev->status &= ~USB_ST_NOT_PROC;
29 urb->dev->act_len = urb->actual_length;
30}
31
32static void construct_urb(struct urb *urb, struct usb_host_endpoint *hep,
33 struct usb_device *dev, int endpoint_type,
34 unsigned long pipe, void *buffer, int len,
35 struct devrequest *setup, int interval)
36{
37 int epnum = usb_pipeendpoint(pipe);
38 int is_in = usb_pipein(pipe);
39
40 memset(urb, 0, sizeof(struct urb));
41 memset(hep, 0, sizeof(struct usb_host_endpoint));
42 INIT_LIST_HEAD(&hep->urb_list);
43 INIT_LIST_HEAD(&urb->urb_list);
44 urb->ep = hep;
45 urb->complete = musb_host_complete_urb;
46 urb->status = -EINPROGRESS;
47 urb->dev = dev;
48 urb->pipe = pipe;
49 urb->transfer_buffer = buffer;
50 urb->transfer_dma = (unsigned long)buffer;
51 urb->transfer_buffer_length = len;
52 urb->setup_packet = (unsigned char *)setup;
53
54 urb->ep->desc.wMaxPacketSize =
55 __cpu_to_le16(is_in ? dev->epmaxpacketin[epnum] :
56 dev->epmaxpacketout[epnum]);
57 urb->ep->desc.bmAttributes = endpoint_type;
58 urb->ep->desc.bEndpointAddress =
59 (is_in ? USB_DIR_IN : USB_DIR_OUT) | epnum;
60 urb->ep->desc.bInterval = interval;
61}
62
63static int submit_urb(struct usb_hcd *hcd, struct urb *urb)
64{
65 struct musb *host = hcd->hcd_priv;
66 int ret;
67 unsigned long timeout;
68
69 ret = musb_urb_enqueue(hcd, urb, 0);
70 if (ret < 0) {
71 printf("Failed to enqueue URB to controller\n");
72 return ret;
73 }
74
75 timeout = get_timer(0) + USB_TIMEOUT_MS(urb->pipe);
76 do {
77 if (ctrlc())
78 return -EIO;
79 host->isr(0, host);
80 } while (urb->status == -EINPROGRESS &&
81 get_timer(0) < timeout);
82
83 if (urb->status == -EINPROGRESS)
84 musb_urb_dequeue(hcd, urb, -ETIME);
85
86 return urb->status;
87}
88
89static int _musb_submit_control_msg(struct musb_host_data *host,
90 struct usb_device *dev, unsigned long pipe,
91 void *buffer, int len, struct devrequest *setup)
92{
93 construct_urb(&host->urb, &host->hep, dev, USB_ENDPOINT_XFER_CONTROL,
94 pipe, buffer, len, setup, 0);
95
96
97 if (!usb_dev_get_parent(dev))
98 dev->speed = host->host_speed;
99
100 return submit_urb(&host->hcd, &host->urb);
101}
102
103static int _musb_submit_bulk_msg(struct musb_host_data *host,
104 struct usb_device *dev, unsigned long pipe, void *buffer, int len)
105{
106 construct_urb(&host->urb, &host->hep, dev, USB_ENDPOINT_XFER_BULK,
107 pipe, buffer, len, NULL, 0);
108 return submit_urb(&host->hcd, &host->urb);
109}
110
111static int _musb_submit_int_msg(struct musb_host_data *host,
112 struct usb_device *dev, unsigned long pipe,
113 void *buffer, int len, int interval)
114{
115 construct_urb(&host->urb, &host->hep, dev, USB_ENDPOINT_XFER_INT, pipe,
116 buffer, len, NULL, interval);
117 return submit_urb(&host->hcd, &host->urb);
118}
119
120static struct int_queue *_musb_create_int_queue(struct musb_host_data *host,
121 struct usb_device *dev, unsigned long pipe, int queuesize,
122 int elementsize, void *buffer, int interval)
123{
124 struct int_queue *queue;
125 int ret, index = usb_pipein(pipe) * 16 + usb_pipeendpoint(pipe);
126
127 if (queuesize != 1) {
128 printf("ERROR musb int-queues only support queuesize 1\n");
129 return NULL;
130 }
131
132 if (dev->int_pending & (1 << index)) {
133 printf("ERROR int-urb is already pending on pipe %lx\n", pipe);
134 return NULL;
135 }
136
137 queue = malloc(sizeof(*queue));
138 if (!queue)
139 return NULL;
140
141 construct_urb(&queue->urb, &queue->hep, dev, USB_ENDPOINT_XFER_INT,
142 pipe, buffer, elementsize, NULL, interval);
143
144 ret = musb_urb_enqueue(&host->hcd, &queue->urb, 0);
145 if (ret < 0) {
146 printf("Failed to enqueue URB to controller\n");
147 free(queue);
148 return NULL;
149 }
150
151 dev->int_pending |= 1 << index;
152 return queue;
153}
154
155static int _musb_destroy_int_queue(struct musb_host_data *host,
156 struct usb_device *dev, struct int_queue *queue)
157{
158 int index = usb_pipein(queue->urb.pipe) * 16 +
159 usb_pipeendpoint(queue->urb.pipe);
160
161 if (queue->urb.status == -EINPROGRESS)
162 musb_urb_dequeue(&host->hcd, &queue->urb, -ETIME);
163
164 dev->int_pending &= ~(1 << index);
165 free(queue);
166 return 0;
167}
168
169static void *_musb_poll_int_queue(struct musb_host_data *host,
170 struct usb_device *dev, struct int_queue *queue)
171{
172 if (queue->urb.status != -EINPROGRESS)
173 return NULL;
174
175 host->host->isr(0, host->host);
176
177 if (queue->urb.status != -EINPROGRESS)
178 return queue->urb.transfer_buffer;
179
180 return NULL;
181}
182
183static int _musb_reset_root_port(struct musb_host_data *host,
184 struct usb_device *dev)
185{
186 void *mbase = host->host->mregs;
187 u8 power;
188
189 power = musb_readb(mbase, MUSB_POWER);
190 power &= 0xf0;
191 musb_writeb(mbase, MUSB_POWER, MUSB_POWER_RESET | power);
192 mdelay(50);
193
194 if (host->host->ops->pre_root_reset_end)
195 host->host->ops->pre_root_reset_end(host->host);
196
197 power = musb_readb(mbase, MUSB_POWER);
198 musb_writeb(mbase, MUSB_POWER, ~MUSB_POWER_RESET & power);
199
200 if (host->host->ops->post_root_reset_end)
201 host->host->ops->post_root_reset_end(host->host);
202
203 host->host->isr(0, host->host);
204 host->host_speed = (musb_readb(mbase, MUSB_POWER) & MUSB_POWER_HSMODE) ?
205 USB_SPEED_HIGH :
206 (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_FSDEV) ?
207 USB_SPEED_FULL : USB_SPEED_LOW;
208 mdelay((host->host_speed == USB_SPEED_LOW) ? 200 : 50);
209
210 return 0;
211}
212
213int musb_lowlevel_init(struct musb_host_data *host)
214{
215 void *mbase;
216
217 unsigned long timeout = get_timer(0) + 1000;
218 int ret;
219
220 if (!host->host) {
221 printf("MUSB host is not registered\n");
222 return -ENODEV;
223 }
224
225 ret = musb_start(host->host);
226 if (ret)
227 return ret;
228
229 mbase = host->host->mregs;
230 do {
231 if (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_HM)
232 break;
233 } while (get_timer(0) < timeout);
234 if (get_timer(0) >= timeout) {
235 musb_stop(host->host);
236 return -ENODEV;
237 }
238
239 _musb_reset_root_port(host, NULL);
240 host->host->is_active = 1;
241 host->hcd.hcd_priv = host->host;
242
243 return 0;
244}
245
246#if !CONFIG_IS_ENABLED(DM_USB)
247int usb_lowlevel_stop(int index)
248{
249 if (!musb_host.host) {
250 printf("MUSB host is not registered\n");
251 return -ENODEV;
252 }
253
254 musb_stop(musb_host.host);
255 return 0;
256}
257
258int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
259 void *buffer, int length)
260{
261 return _musb_submit_bulk_msg(&musb_host, dev, pipe, buffer, length);
262}
263
264int submit_control_msg(struct usb_device *dev, unsigned long pipe,
265 void *buffer, int length, struct devrequest *setup)
266{
267 return _musb_submit_control_msg(&musb_host, dev, pipe, buffer, length, setup);
268}
269
270int submit_int_msg(struct usb_device *dev, unsigned long pipe,
271 void *buffer, int length, int interval)
272{
273 return _musb_submit_int_msg(&musb_host, dev, pipe, buffer, length, interval);
274}
275
276struct int_queue *create_int_queue(struct usb_device *dev,
277 unsigned long pipe, int queuesize, int elementsize,
278 void *buffer, int interval)
279{
280 return _musb_create_int_queue(&musb_host, dev, pipe, queuesize, elementsize,
281 buffer, interval);
282}
283
284void *poll_int_queue(struct usb_device *dev, struct int_queue *queue)
285{
286 return _musb_poll_int_queue(&musb_host, dev, queue);
287}
288
289int destroy_int_queue(struct usb_device *dev, struct int_queue *queue)
290{
291 return _musb_destroy_int_queue(&musb_host, dev, queue);
292}
293
294int usb_reset_root_port(struct usb_device *dev)
295{
296 return _musb_reset_root_port(&musb_host, dev);
297}
298
299int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
300{
301 return musb_lowlevel_init(&musb_host);
302}
303#endif
304
305#if CONFIG_IS_ENABLED(DM_USB)
306static int musb_submit_control_msg(struct udevice *dev, struct usb_device *udev,
307 unsigned long pipe, void *buffer, int length,
308 struct devrequest *setup)
309{
310 struct musb_host_data *host = dev_get_priv(dev);
311 return _musb_submit_control_msg(host, udev, pipe, buffer, length, setup);
312}
313
314static int musb_submit_bulk_msg(struct udevice *dev, struct usb_device *udev,
315 unsigned long pipe, void *buffer, int length)
316{
317 struct musb_host_data *host = dev_get_priv(dev);
318 return _musb_submit_bulk_msg(host, udev, pipe, buffer, length);
319}
320
321static int musb_submit_int_msg(struct udevice *dev, struct usb_device *udev,
322 unsigned long pipe, void *buffer, int length,
323 int interval)
324{
325 struct musb_host_data *host = dev_get_priv(dev);
326 return _musb_submit_int_msg(host, udev, pipe, buffer, length, interval);
327}
328
329static struct int_queue *musb_create_int_queue(struct udevice *dev,
330 struct usb_device *udev, unsigned long pipe, int queuesize,
331 int elementsize, void *buffer, int interval)
332{
333 struct musb_host_data *host = dev_get_priv(dev);
334 return _musb_create_int_queue(host, udev, pipe, queuesize, elementsize,
335 buffer, interval);
336}
337
338static void *musb_poll_int_queue(struct udevice *dev, struct usb_device *udev,
339 struct int_queue *queue)
340{
341 struct musb_host_data *host = dev_get_priv(dev);
342 return _musb_poll_int_queue(host, udev, queue);
343}
344
345static int musb_destroy_int_queue(struct udevice *dev, struct usb_device *udev,
346 struct int_queue *queue)
347{
348 struct musb_host_data *host = dev_get_priv(dev);
349 return _musb_destroy_int_queue(host, udev, queue);
350}
351
352static int musb_reset_root_port(struct udevice *dev, struct usb_device *udev)
353{
354 struct musb_host_data *host = dev_get_priv(dev);
355 return _musb_reset_root_port(host, udev);
356}
357
358struct dm_usb_ops musb_usb_ops = {
359 .control = musb_submit_control_msg,
360 .bulk = musb_submit_bulk_msg,
361 .interrupt = musb_submit_int_msg,
362 .create_int_queue = musb_create_int_queue,
363 .poll_int_queue = musb_poll_int_queue,
364 .destroy_int_queue = musb_destroy_int_queue,
365 .reset_root_port = musb_reset_root_port,
366};
367#endif
368#endif
369
370#if defined(CONFIG_USB_MUSB_GADGET) && !CONFIG_IS_ENABLED(DM_USB_GADGET)
371static struct musb *gadget;
372
373int usb_gadget_handle_interrupts(int index)
374{
375 WATCHDOG_RESET();
376 if (!gadget || !gadget->isr)
377 return -EINVAL;
378
379 return gadget->isr(0, gadget);
380}
381
382int usb_gadget_register_driver(struct usb_gadget_driver *driver)
383{
384 int ret;
385
386 if (!driver || driver->speed < USB_SPEED_FULL || !driver->bind ||
387 !driver->setup) {
388 printf("bad parameter.\n");
389 return -EINVAL;
390 }
391
392 if (!gadget) {
393 printf("Controller uninitialized\n");
394 return -ENXIO;
395 }
396
397 ret = musb_gadget_start(&gadget->g, driver);
398 if (ret < 0) {
399 printf("gadget_start failed with %d\n", ret);
400 return ret;
401 }
402
403 ret = driver->bind(&gadget->g);
404 if (ret < 0) {
405 printf("bind failed with %d\n", ret);
406 return ret;
407 }
408
409 return 0;
410}
411
412int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
413{
414 if (driver->disconnect)
415 driver->disconnect(&gadget->g);
416 if (driver->unbind)
417 driver->unbind(&gadget->g);
418 return 0;
419}
420#endif
421
422struct musb *musb_register(struct musb_hdrc_platform_data *plat, void *bdata,
423 void *ctl_regs)
424{
425 struct musb **musbp;
426
427 switch (plat->mode) {
428#if defined(CONFIG_USB_MUSB_HOST) && !CONFIG_IS_ENABLED(DM_USB)
429 case MUSB_HOST:
430 musbp = &musb_host.host;
431 break;
432#endif
433#if defined(CONFIG_USB_MUSB_GADGET) && !CONFIG_IS_ENABLED(DM_USB_GADGET)
434 case MUSB_PERIPHERAL:
435 musbp = &gadget;
436 break;
437#endif
438 default:
439 return ERR_PTR(-EINVAL);
440 }
441
442 *musbp = musb_init_controller(plat, (struct device *)bdata, ctl_regs);
443 if (IS_ERR(*musbp)) {
444 printf("Failed to init the controller\n");
445 return ERR_CAST(*musbp);
446 }
447
448 return *musbp;
449}
450
