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 17 struct int_queue { 18 struct usb_host_endpoint hep; 19 struct urb urb; 20 }; 21 22 #ifndef CONFIG_DM_USB 23 struct musb_host_data musb_host; 24 #endif 25 26 static 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 32 static 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 63 static 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 89 static 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 /* Fix speed for non hub-attached devices */ 97 if (!usb_dev_get_parent(dev)) 98 dev->speed = host->host_speed; 99 100 return submit_urb(&host->hcd, &host->urb); 101 } 102 103 static 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 } 110 111 static 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 } 119 120 static 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 } 154 155 static 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 } 168 169 static 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; /* URB has already completed in a prev. poll */ 174 175 host->host->isr(0, host->host); 176 177 if (queue->urb.status != -EINPROGRESS) 178 return queue->urb.transfer_buffer; /* Done */ 179 180 return NULL; /* URB still pending */ 181 } 182 183 static 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 } 212 213 int musb_lowlevel_init(struct musb_host_data *host) 214 { 215 void *mbase; 216 /* USB spec says it may take up to 1 second for a device to connect */ 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 #ifndef CONFIG_DM_USB 247 int 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 } 257 258 int 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 } 263 264 int 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 } 269 270 int 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 } 275 276 struct 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 } 283 284 void *poll_int_queue(struct usb_device *dev, struct int_queue *queue) 285 { 286 return _musb_poll_int_queue(&musb_host, dev, queue); 287 } 288 289 int destroy_int_queue(struct usb_device *dev, struct int_queue *queue) 290 { 291 return _musb_destroy_int_queue(&musb_host, dev, queue); 292 } 293 294 int usb_reset_root_port(struct usb_device *dev) 295 { 296 return _musb_reset_root_port(&musb_host, dev); 297 } 298 299 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller) 300 { 301 return musb_lowlevel_init(&musb_host); 302 } 303 #endif /* !CONFIG_DM_USB */ 304 305 #ifdef CONFIG_DM_USB 306 static 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 } 313 314 static 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 } 320 321 static 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 } 328 329 static 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 } 337 338 static 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 } 344 345 static 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 } 351 352 static 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 } 357 358 struct 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 /* CONFIG_DM_USB */ 368 #endif /* CONFIG_USB_MUSB_HOST */ 369 370 #ifdef CONFIG_USB_MUSB_GADGET 371 static struct musb *gadget; 372 373 int 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 } 381 382 int 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 } 411 412 int 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 /* CONFIG_USB_MUSB_GADGET */ 421 422 int 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) && !defined(CONFIG_DM_USB) 429 case MUSB_HOST: 430 musbp = &musb_host.host; 431 break; 432 #endif 433 #ifdef CONFIG_USB_MUSB_GADGET 434 case MUSB_PERIPHERAL: 435 musbp = &gadget; 436 break; 437 #endif 438 default: 439 return -EINVAL; 440 } 441 442 *musbp = musb_init_controller(plat, (struct device *)bdata, ctl_regs); 443 if (!*musbp) { 444 printf("Failed to init the controller\n"); 445 return -EIO; 446 } 447 448 return 0; 449 } 450
