drivers/usb/gadget/f_rockusb.c

   1 /*
   2  * (C) Copyright 2017
   3  *
   4  * Eddie Cai <eddie.cai.linux@gmail.com>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8 #include <config.h>
   9 #include <common.h>
  10 #include <errno.h>
  11 #include <malloc.h>
  12 #include <memalign.h>
  13 #include <linux/usb/ch9.h>
  14 #include <linux/usb/gadget.h>
  15 #include <linux/usb/composite.h>
  16 #include <linux/compiler.h>
  17 #include <version.h>
  18 #include <g_dnl.h>
  19 #include <asm/arch/f_rockusb.h>
  20
  21 static inline struct f_rockusb *func_to_rockusb(struct usb_function *f)
  22 {
  23         return container_of(f, struct f_rockusb, usb_function);
  24 }
  25
  26 static struct usb_endpoint_descriptor fs_ep_in = {
  27         .bLength            = USB_DT_ENDPOINT_SIZE,
  28         .bDescriptorType    = USB_DT_ENDPOINT,
  29         .bEndpointAddress   = USB_DIR_IN,
  30         .bmAttributes       = USB_ENDPOINT_XFER_BULK,
  31         .wMaxPacketSize     = cpu_to_le16(64),
  32 };
  33
  34 static struct usb_endpoint_descriptor fs_ep_out = {
  35         .bLength                = USB_DT_ENDPOINT_SIZE,
  36         .bDescriptorType        = USB_DT_ENDPOINT,
  37         .bEndpointAddress       = USB_DIR_OUT,
  38         .bmAttributes           = USB_ENDPOINT_XFER_BULK,
  39         .wMaxPacketSize         = cpu_to_le16(64),
  40 };
  41
  42 static struct usb_endpoint_descriptor hs_ep_in = {
  43         .bLength                = USB_DT_ENDPOINT_SIZE,
  44         .bDescriptorType        = USB_DT_ENDPOINT,
  45         .bEndpointAddress       = USB_DIR_IN,
  46         .bmAttributes           = USB_ENDPOINT_XFER_BULK,
  47         .wMaxPacketSize         = cpu_to_le16(512),
  48 };
  49
  50 static struct usb_endpoint_descriptor hs_ep_out = {
  51         .bLength                = USB_DT_ENDPOINT_SIZE,
  52         .bDescriptorType        = USB_DT_ENDPOINT,
  53         .bEndpointAddress       = USB_DIR_OUT,
  54         .bmAttributes           = USB_ENDPOINT_XFER_BULK,
  55         .wMaxPacketSize         = cpu_to_le16(512),
  56 };
  57
  58 static struct usb_interface_descriptor interface_desc = {
  59         .bLength                = USB_DT_INTERFACE_SIZE,
  60         .bDescriptorType        = USB_DT_INTERFACE,
  61         .bInterfaceNumber       = 0x00,
  62         .bAlternateSetting      = 0x00,
  63         .bNumEndpoints          = 0x02,
  64         .bInterfaceClass        = ROCKUSB_INTERFACE_CLASS,
  65         .bInterfaceSubClass     = ROCKUSB_INTERFACE_SUB_CLASS,
  66         .bInterfaceProtocol     = ROCKUSB_INTERFACE_PROTOCOL,
  67 };
  68
  69 static struct usb_descriptor_header *rkusb_fs_function[] = {
  70         (struct usb_descriptor_header *)&interface_desc,
  71         (struct usb_descriptor_header *)&fs_ep_in,
  72         (struct usb_descriptor_header *)&fs_ep_out,
  73 };
  74
  75 static struct usb_descriptor_header *rkusb_hs_function[] = {
  76         (struct usb_descriptor_header *)&interface_desc,
  77         (struct usb_descriptor_header *)&hs_ep_in,
  78         (struct usb_descriptor_header *)&hs_ep_out,
  79         NULL,
  80 };
  81
  82 static const char rkusb_name[] = "Rockchip Rockusb";
  83
  84 static struct usb_string rkusb_string_defs[] = {
  85         [0].s = rkusb_name,
  86         {  }                    /* end of list */
  87 };
  88
  89 static struct usb_gadget_strings stringtab_rkusb = {
  90         .language       = 0x0409,       /* en-us */
  91         .strings        = rkusb_string_defs,
  92 };
  93
  94 static struct usb_gadget_strings *rkusb_strings[] = {
  95         &stringtab_rkusb,
  96         NULL,
  97 };
  98
  99 static struct f_rockusb *rockusb_func;
 100 static void rx_handler_command(struct usb_ep *ep, struct usb_request *req);
 101 static int rockusb_tx_write_csw(u32 tag, int residue, u8 status, int size);
 102
 103 struct f_rockusb *get_rkusb(void)
 104 {
 105         struct f_rockusb *f_rkusb = rockusb_func;
 106
 107         if (!f_rkusb) {
 108                 f_rkusb = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*f_rkusb));
 109                 if (!f_rkusb)
 110                         return 0;
 111
 112                 rockusb_func = f_rkusb;
 113                 memset(f_rkusb, 0, sizeof(*f_rkusb));
 114         }
 115
 116         if (!f_rkusb->buf_head) {
 117                 f_rkusb->buf_head = memalign(CONFIG_SYS_CACHELINE_SIZE,
 118                                              RKUSB_BUF_SIZE);
 119                 if (!f_rkusb->buf_head)
 120                         return 0;
 121
 122                 f_rkusb->buf = f_rkusb->buf_head;
 123                 memset(f_rkusb->buf_head, 0, RKUSB_BUF_SIZE);
 124         }
 125         return f_rkusb;
 126 }
 127
 128 static struct usb_endpoint_descriptor *rkusb_ep_desc(
 129 struct usb_gadget *g,
 130 struct usb_endpoint_descriptor *fs,
 131 struct usb_endpoint_descriptor *hs)
 132 {
 133         if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
 134                 return hs;
 135         return fs;
 136 }
 137
 138 static void rockusb_complete(struct usb_ep *ep, struct usb_request *req)
 139 {
 140         int status = req->status;
 141
 142         if (!status)
 143                 return;
 144         debug("status: %d ep '%s' trans: %d\n", status, ep->name, req->actual);
 145 }
 146
 147 /* config the rockusb device*/
 148 static int rockusb_bind(struct usb_configuration *c, struct usb_function *f)
 149 {
 150         int id;
 151         struct usb_gadget *gadget = c->cdev->gadget;
 152         struct f_rockusb *f_rkusb = func_to_rockusb(f);
 153         const char *s;
 154
 155         id = usb_interface_id(c, f);
 156         if (id < 0)
 157                 return id;
 158         interface_desc.bInterfaceNumber = id;
 159
 160         id = usb_string_id(c->cdev);
 161         if (id < 0)
 162                 return id;
 163
 164         rkusb_string_defs[0].id = id;
 165         interface_desc.iInterface = id;
 166
 167         f_rkusb->in_ep = usb_ep_autoconfig(gadget, &fs_ep_in);
 168         if (!f_rkusb->in_ep)
 169                 return -ENODEV;
 170         f_rkusb->in_ep->driver_data = c->cdev;
 171
 172         f_rkusb->out_ep = usb_ep_autoconfig(gadget, &fs_ep_out);
 173         if (!f_rkusb->out_ep)
 174                 return -ENODEV;
 175         f_rkusb->out_ep->driver_data = c->cdev;
 176
 177         f->descriptors = rkusb_fs_function;
 178
 179         if (gadget_is_dualspeed(gadget)) {
 180                 hs_ep_in.bEndpointAddress = fs_ep_in.bEndpointAddress;
 181                 hs_ep_out.bEndpointAddress = fs_ep_out.bEndpointAddress;
 182                 f->hs_descriptors = rkusb_hs_function;
 183         }
 184
 185         s = env_get("serial#");
 186         if (s)
 187                 g_dnl_set_serialnumber((char *)s);
 188
 189         return 0;
 190 }
 191
 192 static void rockusb_unbind(struct usb_configuration *c, struct usb_function *f)
 193 {
 194         /* clear the configuration*/
 195         memset(rockusb_func, 0, sizeof(*rockusb_func));
 196 }
 197
 198 static void rockusb_disable(struct usb_function *f)
 199 {
 200         struct f_rockusb *f_rkusb = func_to_rockusb(f);
 201
 202         usb_ep_disable(f_rkusb->out_ep);
 203         usb_ep_disable(f_rkusb->in_ep);
 204
 205         if (f_rkusb->out_req) {
 206                 free(f_rkusb->out_req->buf);
 207                 usb_ep_free_request(f_rkusb->out_ep, f_rkusb->out_req);
 208                 f_rkusb->out_req = NULL;
 209         }
 210         if (f_rkusb->in_req) {
 211                 free(f_rkusb->in_req->buf);
 212                 usb_ep_free_request(f_rkusb->in_ep, f_rkusb->in_req);
 213                 f_rkusb->in_req = NULL;
 214         }
 215         if (f_rkusb->buf_head) {
 216                 free(f_rkusb->buf_head);
 217                 f_rkusb->buf_head = NULL;
 218                 f_rkusb->buf = NULL;
 219         }
 220 }
 221
 222 static struct usb_request *rockusb_start_ep(struct usb_ep *ep)
 223 {
 224         struct usb_request *req;
 225
 226         req = usb_ep_alloc_request(ep, 0);
 227         if (!req)
 228                 return NULL;
 229
 230         req->length = EP_BUFFER_SIZE;
 231         req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE, EP_BUFFER_SIZE);
 232         if (!req->buf) {
 233                 usb_ep_free_request(ep, req);
 234                 return NULL;
 235         }
 236         memset(req->buf, 0, req->length);
 237
 238         return req;
 239 }
 240
 241 static int rockusb_set_alt(struct usb_function *f, unsigned int interface,
 242                            unsigned int alt)
 243 {
 244         int ret;
 245         struct usb_composite_dev *cdev = f->config->cdev;
 246         struct usb_gadget *gadget = cdev->gadget;
 247         struct f_rockusb *f_rkusb = func_to_rockusb(f);
 248         const struct usb_endpoint_descriptor *d;
 249
 250         debug("%s: func: %s intf: %d alt: %d\n",
 251               __func__, f->name, interface, alt);
 252
 253         d = rkusb_ep_desc(gadget, &fs_ep_out, &hs_ep_out);
 254         ret = usb_ep_enable(f_rkusb->out_ep, d);
 255         if (ret) {
 256                 printf("failed to enable out ep\n");
 257                 return ret;
 258         }
 259
 260         f_rkusb->out_req = rockusb_start_ep(f_rkusb->out_ep);
 261         if (!f_rkusb->out_req) {
 262                 printf("failed to alloc out req\n");
 263                 ret = -EINVAL;
 264                 goto err;
 265         }
 266         f_rkusb->out_req->complete = rx_handler_command;
 267
 268         d = rkusb_ep_desc(gadget, &fs_ep_in, &hs_ep_in);
 269         ret = usb_ep_enable(f_rkusb->in_ep, d);
 270         if (ret) {
 271                 printf("failed to enable in ep\n");
 272                 goto err;
 273         }
 274
 275         f_rkusb->in_req = rockusb_start_ep(f_rkusb->in_ep);
 276         if (!f_rkusb->in_req) {
 277                 printf("failed alloc req in\n");
 278                 ret = -EINVAL;
 279                 goto err;
 280         }
 281         f_rkusb->in_req->complete = rockusb_complete;
 282
 283         ret = usb_ep_queue(f_rkusb->out_ep, f_rkusb->out_req, 0);
 284         if (ret)
 285                 goto err;
 286
 287         return 0;
 288 err:
 289         rockusb_disable(f);
 290         return ret;
 291 }
 292
 293 static int rockusb_add(struct usb_configuration *c)
 294 {
 295         struct f_rockusb *f_rkusb = get_rkusb();
 296         int status;
 297
 298         debug("%s: cdev: 0x%p\n", __func__, c->cdev);
 299
 300         f_rkusb->usb_function.name = "f_rockusb";
 301         f_rkusb->usb_function.bind = rockusb_bind;
 302         f_rkusb->usb_function.unbind = rockusb_unbind;
 303         f_rkusb->usb_function.set_alt = rockusb_set_alt;
 304         f_rkusb->usb_function.disable = rockusb_disable;
 305         f_rkusb->usb_function.strings = rkusb_strings;
 306
 307         status = usb_add_function(c, &f_rkusb->usb_function);
 308         if (status) {
 309                 free(f_rkusb);
 310                 rockusb_func = f_rkusb;
 311         }
 312         return status;
 313 }
 314
 315 void rockusb_dev_init(char *dev_type, int dev_index)
 316 {
 317         struct f_rockusb *f_rkusb = get_rkusb();
 318
 319         f_rkusb->dev_type = dev_type;
 320         f_rkusb->dev_index = dev_index;
 321 }
 322
 323 DECLARE_GADGET_BIND_CALLBACK(usb_dnl_rockusb, rockusb_add);
 324
 325 static int rockusb_tx_write(const char *buffer, unsigned int buffer_size)
 326 {
 327         struct usb_request *in_req = rockusb_func->in_req;
 328         int ret;
 329
 330         memcpy(in_req->buf, buffer, buffer_size);
 331         in_req->length = buffer_size;
 332         usb_ep_dequeue(rockusb_func->in_ep, in_req);
 333         ret = usb_ep_queue(rockusb_func->in_ep, in_req, 0);
 334         if (ret)
 335                 printf("Error %d on queue\n", ret);
 336         return 0;
 337 }
 338
 339 static int rockusb_tx_write_str(const char *buffer)
 340 {
 341         return rockusb_tx_write(buffer, strlen(buffer));
 342 }
 343
 344 #ifdef DEBUG
 345 static void printcbw(char *buf)
 346 {
 347         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 348                                  sizeof(struct fsg_bulk_cb_wrap));
 349
 350         memcpy((char *)cbw, buf, USB_BULK_CB_WRAP_LEN);
 351
 352         debug("cbw: signature:%x\n", cbw->signature);
 353         debug("cbw: tag=%x\n", cbw->tag);
 354         debug("cbw: data_transfer_length=%d\n", cbw->data_transfer_length);
 355         debug("cbw: flags=%x\n", cbw->flags);
 356         debug("cbw: lun=%d\n", cbw->lun);
 357         debug("cbw: length=%d\n", cbw->length);
 358         debug("cbw: ucOperCode=%x\n", cbw->CDB[0]);
 359         debug("cbw: ucReserved=%x\n", cbw->CDB[1]);
 360         debug("cbw: dwAddress:%x %x %x %x\n", cbw->CDB[5], cbw->CDB[4],
 361               cbw->CDB[3], cbw->CDB[2]);
 362         debug("cbw: ucReserved2=%x\n", cbw->CDB[6]);
 363         debug("cbw: uslength:%x %x\n", cbw->CDB[8], cbw->CDB[7]);
 364 }
 365
 366 static void printcsw(char *buf)
 367 {
 368         ALLOC_CACHE_ALIGN_BUFFER(struct bulk_cs_wrap, csw,
 369                                  sizeof(struct bulk_cs_wrap));
 370         memcpy((char *)csw, buf, USB_BULK_CS_WRAP_LEN);
 371         debug("csw: signature:%x\n", csw->signature);
 372         debug("csw: tag:%x\n", csw->tag);
 373         debug("csw: residue:%x\n", csw->residue);
 374         debug("csw: status:%x\n", csw->status);
 375 }
 376 #endif
 377
 378 static int rockusb_tx_write_csw(u32 tag, int residue, u8 status, int size)
 379 {
 380         ALLOC_CACHE_ALIGN_BUFFER(struct bulk_cs_wrap, csw,
 381                                  sizeof(struct bulk_cs_wrap));
 382         csw->signature = cpu_to_le32(USB_BULK_CS_SIG);
 383         csw->tag = tag;
 384         csw->residue = cpu_to_be32(residue);
 385         csw->status = status;
 386 #ifdef DEBUG
 387         printcsw((char *)&csw);
 388 #endif
 389         return rockusb_tx_write((char *)csw, size);
 390 }
 391
 392 static unsigned int rx_bytes_expected(struct usb_ep *ep)
 393 {
 394         struct f_rockusb *f_rkusb = get_rkusb();
 395         int rx_remain = f_rkusb->dl_size - f_rkusb->dl_bytes;
 396         unsigned int rem;
 397         unsigned int maxpacket = ep->maxpacket;
 398
 399         if (rx_remain <= 0)
 400                 return 0;
 401         else if (rx_remain > EP_BUFFER_SIZE)
 402                 return EP_BUFFER_SIZE;
 403
 404         rem = rx_remain % maxpacket;
 405         if (rem > 0)
 406                 rx_remain = rx_remain + (maxpacket - rem);
 407
 408         return rx_remain;
 409 }
 410
 411 /* usb_request complete call back to handle down load image */
 412 static void rx_handler_dl_image(struct usb_ep *ep, struct usb_request *req)
 413 {
 414         struct f_rockusb *f_rkusb = get_rkusb();
 415         unsigned int transfer_size = 0;
 416         const unsigned char *buffer = req->buf;
 417         unsigned int buffer_size = req->actual;
 418
 419         transfer_size = f_rkusb->dl_size - f_rkusb->dl_bytes;
 420         if (!f_rkusb->desc) {
 421                 char *type = f_rkusb->dev_type;
 422                 int index = f_rkusb->dev_index;
 423
 424                 f_rkusb->desc = blk_get_dev(type, index);
 425                 if (!f_rkusb->desc ||
 426                     f_rkusb->desc->type == DEV_TYPE_UNKNOWN) {
 427                         puts("invalid mmc device\n");
 428                         rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_FAIL,
 429                                              USB_BULK_CS_WRAP_LEN);
 430                         return;
 431                 }
 432         }
 433
 434         if (req->status != 0) {
 435                 printf("Bad status: %d\n", req->status);
 436                 rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_FAIL,
 437                                      USB_BULK_CS_WRAP_LEN);
 438                 return;
 439         }
 440
 441         if (buffer_size < transfer_size)
 442                 transfer_size = buffer_size;
 443
 444         memcpy((void *)f_rkusb->buf, buffer, transfer_size);
 445         f_rkusb->dl_bytes += transfer_size;
 446         int blks = 0, blkcnt = transfer_size  / 512;
 447
 448         debug("dl %x bytes, %x blks, write lba %x, dl_size:%x, dl_bytes:%x, ",
 449               transfer_size, blkcnt, f_rkusb->lba, f_rkusb->dl_size,
 450               f_rkusb->dl_bytes);
 451         blks = blk_dwrite(f_rkusb->desc, f_rkusb->lba, blkcnt, f_rkusb->buf);
 452         if (blks != blkcnt) {
 453                 printf("failed writing to device %s: %d\n", f_rkusb->dev_type,
 454                        f_rkusb->dev_index);
 455                 rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_FAIL,
 456                                      USB_BULK_CS_WRAP_LEN);
 457                 return;
 458         }
 459         f_rkusb->lba += blkcnt;
 460
 461         /* Check if transfer is done */
 462         if (f_rkusb->dl_bytes >= f_rkusb->dl_size) {
 463                 req->complete = rx_handler_command;
 464                 req->length = EP_BUFFER_SIZE;
 465                 f_rkusb->buf = f_rkusb->buf_head;
 466                 printf("transfer 0x%x bytes done\n", f_rkusb->dl_size);
 467                 f_rkusb->dl_size = 0;
 468                 rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_GOOD,
 469                                      USB_BULK_CS_WRAP_LEN);
 470         } else {
 471                 req->length = rx_bytes_expected(ep);
 472                 if (f_rkusb->buf == f_rkusb->buf_head)
 473                         f_rkusb->buf = f_rkusb->buf_head + EP_BUFFER_SIZE;
 474                 else
 475                         f_rkusb->buf = f_rkusb->buf_head;
 476
 477                 debug("remain %x bytes, %x sectors\n", req->length,
 478                       req->length / 512);
 479         }
 480
 481         req->actual = 0;
 482         usb_ep_queue(ep, req, 0);
 483 }
 484
 485 static void cb_test_unit_ready(struct usb_ep *ep, struct usb_request *req)
 486 {
 487         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 488                                  sizeof(struct fsg_bulk_cb_wrap));
 489
 490         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 491
 492         rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length,
 493                              CSW_GOOD, USB_BULK_CS_WRAP_LEN);
 494 }
 495
 496 static void cb_read_storage_id(struct usb_ep *ep, struct usb_request *req)
 497 {
 498         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 499                                  sizeof(struct fsg_bulk_cb_wrap));
 500         char emmc_id[] = "EMMC ";
 501
 502         printf("read storage id\n");
 503         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 504         rockusb_tx_write_str(emmc_id);
 505         rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length, CSW_GOOD,
 506                              USB_BULK_CS_WRAP_LEN);
 507 }
 508
 509 static void cb_write_lba(struct usb_ep *ep, struct usb_request *req)
 510 {
 511         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 512                                  sizeof(struct fsg_bulk_cb_wrap));
 513         struct f_rockusb *f_rkusb = get_rkusb();
 514         int sector_count;
 515
 516         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 517         sector_count = (int)get_unaligned_be16(&cbw->CDB[7]);
 518         f_rkusb->lba = get_unaligned_be32(&cbw->CDB[2]);
 519         f_rkusb->dl_size = sector_count * 512;
 520         f_rkusb->dl_bytes = 0;
 521         f_rkusb->tag = cbw->tag;
 522         debug("require write %x bytes, %x sectors to lba %x\n",
 523               f_rkusb->dl_size, sector_count, f_rkusb->lba);
 524
 525         if (f_rkusb->dl_size == 0)  {
 526                 rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length,
 527                                      CSW_FAIL, USB_BULK_CS_WRAP_LEN);
 528         } else {
 529                 req->complete = rx_handler_dl_image;
 530                 req->length = rx_bytes_expected(ep);
 531         }
 532 }
 533
 534 void __weak rkusb_set_reboot_flag(int flag)
 535 {
 536         struct f_rockusb *f_rkusb = get_rkusb();
 537
 538         printf("rockkusb set reboot flag: %d\n", f_rkusb->reboot_flag);
 539 }
 540
 541 static void compl_do_reset(struct usb_ep *ep, struct usb_request *req)
 542 {
 543         struct f_rockusb *f_rkusb = get_rkusb();
 544
 545         rkusb_set_reboot_flag(f_rkusb->reboot_flag);
 546         do_reset(NULL, 0, 0, NULL);
 547 }
 548
 549 static void cb_reboot(struct usb_ep *ep, struct usb_request *req)
 550 {
 551         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 552                                  sizeof(struct fsg_bulk_cb_wrap));
 553         struct f_rockusb *f_rkusb = get_rkusb();
 554
 555         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 556         f_rkusb->reboot_flag = cbw->CDB[1];
 557         rockusb_func->in_req->complete = compl_do_reset;
 558         rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length, CSW_GOOD,
 559                              USB_BULK_CS_WRAP_LEN);
 560 }
 561
 562 static void cb_not_support(struct usb_ep *ep, struct usb_request *req)
 563 {
 564         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 565                                  sizeof(struct fsg_bulk_cb_wrap));
 566
 567         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 568         printf("Rockusb command %x not support yet\n", cbw->CDB[0]);
 569         rockusb_tx_write_csw(cbw->tag, 0, CSW_FAIL, USB_BULK_CS_WRAP_LEN);
 570 }
 571
 572 static const struct cmd_dispatch_info cmd_dispatch_info[] = {
 573         {
 574                 .cmd = K_FW_TEST_UNIT_READY,
 575                 .cb = cb_test_unit_ready,
 576         },
 577         {
 578                 .cmd = K_FW_READ_FLASH_ID,
 579                 .cb = cb_read_storage_id,
 580         },
 581         {
 582                 .cmd = K_FW_SET_DEVICE_ID,
 583                 .cb = cb_not_support,
 584         },
 585         {
 586                 .cmd = K_FW_TEST_BAD_BLOCK,
 587                 .cb = cb_not_support,
 588         },
 589         {
 590                 .cmd = K_FW_READ_10,
 591                 .cb = cb_not_support,
 592         },
 593         {
 594                 .cmd = K_FW_WRITE_10,
 595                 .cb = cb_not_support,
 596         },
 597         {
 598                 .cmd = K_FW_ERASE_10,
 599                 .cb = cb_not_support,
 600         },
 601         {
 602                 .cmd = K_FW_WRITE_SPARE,
 603                 .cb = cb_not_support,
 604         },
 605         {
 606                 .cmd = K_FW_READ_SPARE,
 607                 .cb = cb_not_support,
 608         },
 609         {
 610                 .cmd = K_FW_ERASE_10_FORCE,
 611                 .cb = cb_not_support,
 612         },
 613         {
 614                 .cmd = K_FW_GET_VERSION,
 615                 .cb = cb_not_support,
 616         },
 617         {
 618                 .cmd = K_FW_LBA_READ_10,
 619                 .cb = cb_not_support,
 620         },
 621         {
 622                 .cmd = K_FW_LBA_WRITE_10,
 623                 .cb = cb_write_lba,
 624         },
 625         {
 626                 .cmd = K_FW_ERASE_SYS_DISK,
 627                 .cb = cb_not_support,
 628         },
 629         {
 630                 .cmd = K_FW_SDRAM_READ_10,
 631                 .cb = cb_not_support,
 632         },
 633         {
 634                 .cmd = K_FW_SDRAM_WRITE_10,
 635                 .cb = cb_not_support,
 636         },
 637         {
 638                 .cmd = K_FW_SDRAM_EXECUTE,
 639                 .cb = cb_not_support,
 640         },
 641         {
 642                 .cmd = K_FW_READ_FLASH_INFO,
 643                 .cb = cb_not_support,
 644         },
 645         {
 646                 .cmd = K_FW_GET_CHIP_VER,
 647                 .cb = cb_not_support,
 648         },
 649         {
 650                 .cmd = K_FW_LOW_FORMAT,
 651                 .cb = cb_not_support,
 652         },
 653         {
 654                 .cmd = K_FW_SET_RESET_FLAG,
 655                 .cb = cb_not_support,
 656         },
 657         {
 658                 .cmd = K_FW_SPI_READ_10,
 659                 .cb = cb_not_support,
 660         },
 661         {
 662                 .cmd = K_FW_SPI_WRITE_10,
 663                 .cb = cb_not_support,
 664         },
 665         {
 666                 .cmd = K_FW_SESSION,
 667                 .cb = cb_not_support,
 668         },
 669         {
 670                 .cmd = K_FW_RESET,
 671                 .cb = cb_reboot,
 672         },
 673 };
 674
 675 static void rx_handler_command(struct usb_ep *ep, struct usb_request *req)
 676 {
 677         void (*func_cb)(struct usb_ep *ep, struct usb_request *req) = NULL;
 678
 679         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 680                                  sizeof(struct fsg_bulk_cb_wrap));
 681         char *cmdbuf = req->buf;
 682         int i;
 683
 684         if (req->status || req->length == 0)
 685                 return;
 686
 687         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 688 #ifdef DEBUG
 689         printcbw(req->buf);
 690 #endif
 691
 692         for (i = 0; i < ARRAY_SIZE(cmd_dispatch_info); i++) {
 693                 if (cmd_dispatch_info[i].cmd == cbw->CDB[0]) {
 694                         func_cb = cmd_dispatch_info[i].cb;
 695                         break;
 696                 }
 697         }
 698
 699         if (!func_cb) {
 700                 printf("unknown command: %s\n", (char *)req->buf);
 701                 rockusb_tx_write_str("FAILunknown command");
 702         } else {
 703                 if (req->actual < req->length) {
 704                         u8 *buf = (u8 *)req->buf;
 705
 706                         buf[req->actual] = 0;
 707                         func_cb(ep, req);
 708                 } else {
 709                         puts("buffer overflow\n");
 710                         rockusb_tx_write_str("FAILbuffer overflow");
 711                 }
 712         }
 713
 714         *cmdbuf = '\0';
 715         req->actual = 0;
 716         usb_ep_queue(ep, req, 0);
 717 }