drivers/usb/gadget/f_rockusb.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2017
   4  *
   5  * Eddie Cai <eddie.cai.linux@gmail.com>
   6  */
   7 #include <command.h>
   8 #include <config.h>
   9 #include <common.h>
  10 #include <env.h>
  11 #include <errno.h>
  12 #include <malloc.h>
  13 #include <memalign.h>
  14 #include <part.h>
  15 #include <linux/usb/ch9.h>
  16 #include <linux/usb/gadget.h>
  17 #include <linux/usb/composite.h>
  18 #include <linux/compiler.h>
  19 #include <version.h>
  20 #include <g_dnl.h>
  21 #include <asm/arch-rockchip/f_rockusb.h>
  22
  23 static inline struct f_rockusb *func_to_rockusb(struct usb_function *f)
  24 {
  25         return container_of(f, struct f_rockusb, usb_function);
  26 }
  27
  28 static struct usb_endpoint_descriptor fs_ep_in = {
  29         .bLength            = USB_DT_ENDPOINT_SIZE,
  30         .bDescriptorType    = USB_DT_ENDPOINT,
  31         .bEndpointAddress   = USB_DIR_IN,
  32         .bmAttributes       = USB_ENDPOINT_XFER_BULK,
  33         .wMaxPacketSize     = cpu_to_le16(64),
  34 };
  35
  36 static struct usb_endpoint_descriptor fs_ep_out = {
  37         .bLength                = USB_DT_ENDPOINT_SIZE,
  38         .bDescriptorType        = USB_DT_ENDPOINT,
  39         .bEndpointAddress       = USB_DIR_OUT,
  40         .bmAttributes           = USB_ENDPOINT_XFER_BULK,
  41         .wMaxPacketSize         = cpu_to_le16(64),
  42 };
  43
  44 static struct usb_endpoint_descriptor hs_ep_in = {
  45         .bLength                = USB_DT_ENDPOINT_SIZE,
  46         .bDescriptorType        = USB_DT_ENDPOINT,
  47         .bEndpointAddress       = USB_DIR_IN,
  48         .bmAttributes           = USB_ENDPOINT_XFER_BULK,
  49         .wMaxPacketSize         = cpu_to_le16(512),
  50 };
  51
  52 static struct usb_endpoint_descriptor hs_ep_out = {
  53         .bLength                = USB_DT_ENDPOINT_SIZE,
  54         .bDescriptorType        = USB_DT_ENDPOINT,
  55         .bEndpointAddress       = USB_DIR_OUT,
  56         .bmAttributes           = USB_ENDPOINT_XFER_BULK,
  57         .wMaxPacketSize         = cpu_to_le16(512),
  58 };
  59
  60 static struct usb_interface_descriptor interface_desc = {
  61         .bLength                = USB_DT_INTERFACE_SIZE,
  62         .bDescriptorType        = USB_DT_INTERFACE,
  63         .bInterfaceNumber       = 0x00,
  64         .bAlternateSetting      = 0x00,
  65         .bNumEndpoints          = 0x02,
  66         .bInterfaceClass        = ROCKUSB_INTERFACE_CLASS,
  67         .bInterfaceSubClass     = ROCKUSB_INTERFACE_SUB_CLASS,
  68         .bInterfaceProtocol     = ROCKUSB_INTERFACE_PROTOCOL,
  69 };
  70
  71 static struct usb_descriptor_header *rkusb_fs_function[] = {
  72         (struct usb_descriptor_header *)&interface_desc,
  73         (struct usb_descriptor_header *)&fs_ep_in,
  74         (struct usb_descriptor_header *)&fs_ep_out,
  75 };
  76
  77 static struct usb_descriptor_header *rkusb_hs_function[] = {
  78         (struct usb_descriptor_header *)&interface_desc,
  79         (struct usb_descriptor_header *)&hs_ep_in,
  80         (struct usb_descriptor_header *)&hs_ep_out,
  81         NULL,
  82 };
  83
  84 static const char rkusb_name[] = "Rockchip Rockusb";
  85
  86 static struct usb_string rkusb_string_defs[] = {
  87         [0].s = rkusb_name,
  88         {  }                    /* end of list */
  89 };
  90
  91 static struct usb_gadget_strings stringtab_rkusb = {
  92         .language       = 0x0409,       /* en-us */
  93         .strings        = rkusb_string_defs,
  94 };
  95
  96 static struct usb_gadget_strings *rkusb_strings[] = {
  97         &stringtab_rkusb,
  98         NULL,
  99 };
 100
 101 static struct f_rockusb *rockusb_func;
 102 static void rx_handler_command(struct usb_ep *ep, struct usb_request *req);
 103 static int rockusb_tx_write_csw(u32 tag, int residue, u8 status, int size);
 104
 105 struct f_rockusb *get_rkusb(void)
 106 {
 107         struct f_rockusb *f_rkusb = rockusb_func;
 108
 109         if (!f_rkusb) {
 110                 f_rkusb = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*f_rkusb));
 111                 if (!f_rkusb)
 112                         return 0;
 113
 114                 rockusb_func = f_rkusb;
 115                 memset(f_rkusb, 0, sizeof(*f_rkusb));
 116         }
 117
 118         if (!f_rkusb->buf_head) {
 119                 f_rkusb->buf_head = memalign(CONFIG_SYS_CACHELINE_SIZE,
 120                                              RKUSB_BUF_SIZE);
 121                 if (!f_rkusb->buf_head)
 122                         return 0;
 123
 124                 f_rkusb->buf = f_rkusb->buf_head;
 125                 memset(f_rkusb->buf_head, 0, RKUSB_BUF_SIZE);
 126         }
 127         return f_rkusb;
 128 }
 129
 130 static struct usb_endpoint_descriptor *rkusb_ep_desc(
 131 struct usb_gadget *g,
 132 struct usb_endpoint_descriptor *fs,
 133 struct usb_endpoint_descriptor *hs)
 134 {
 135         if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
 136                 return hs;
 137         return fs;
 138 }
 139
 140 static void rockusb_complete(struct usb_ep *ep, struct usb_request *req)
 141 {
 142         int status = req->status;
 143
 144         if (!status)
 145                 return;
 146         debug("status: %d ep '%s' trans: %d\n", status, ep->name, req->actual);
 147 }
 148
 149 /* config the rockusb device*/
 150 static int rockusb_bind(struct usb_configuration *c, struct usb_function *f)
 151 {
 152         int id;
 153         struct usb_gadget *gadget = c->cdev->gadget;
 154         struct f_rockusb *f_rkusb = func_to_rockusb(f);
 155         const char *s;
 156
 157         id = usb_interface_id(c, f);
 158         if (id < 0)
 159                 return id;
 160         interface_desc.bInterfaceNumber = id;
 161
 162         id = usb_string_id(c->cdev);
 163         if (id < 0)
 164                 return id;
 165
 166         rkusb_string_defs[0].id = id;
 167         interface_desc.iInterface = id;
 168
 169         f_rkusb->in_ep = usb_ep_autoconfig(gadget, &fs_ep_in);
 170         if (!f_rkusb->in_ep)
 171                 return -ENODEV;
 172         f_rkusb->in_ep->driver_data = c->cdev;
 173
 174         f_rkusb->out_ep = usb_ep_autoconfig(gadget, &fs_ep_out);
 175         if (!f_rkusb->out_ep)
 176                 return -ENODEV;
 177         f_rkusb->out_ep->driver_data = c->cdev;
 178
 179         f->descriptors = rkusb_fs_function;
 180
 181         if (gadget_is_dualspeed(gadget)) {
 182                 hs_ep_in.bEndpointAddress = fs_ep_in.bEndpointAddress;
 183                 hs_ep_out.bEndpointAddress = fs_ep_out.bEndpointAddress;
 184                 f->hs_descriptors = rkusb_hs_function;
 185         }
 186
 187         s = env_get("serial#");
 188         if (s)
 189                 g_dnl_set_serialnumber((char *)s);
 190
 191         return 0;
 192 }
 193
 194 static void rockusb_unbind(struct usb_configuration *c, struct usb_function *f)
 195 {
 196         /* clear the configuration*/
 197         memset(rockusb_func, 0, sizeof(*rockusb_func));
 198 }
 199
 200 static void rockusb_disable(struct usb_function *f)
 201 {
 202         struct f_rockusb *f_rkusb = func_to_rockusb(f);
 203
 204         usb_ep_disable(f_rkusb->out_ep);
 205         usb_ep_disable(f_rkusb->in_ep);
 206
 207         if (f_rkusb->out_req) {
 208                 free(f_rkusb->out_req->buf);
 209                 usb_ep_free_request(f_rkusb->out_ep, f_rkusb->out_req);
 210                 f_rkusb->out_req = NULL;
 211         }
 212         if (f_rkusb->in_req) {
 213                 free(f_rkusb->in_req->buf);
 214                 usb_ep_free_request(f_rkusb->in_ep, f_rkusb->in_req);
 215                 f_rkusb->in_req = NULL;
 216         }
 217         if (f_rkusb->buf_head) {
 218                 free(f_rkusb->buf_head);
 219                 f_rkusb->buf_head = NULL;
 220                 f_rkusb->buf = NULL;
 221         }
 222 }
 223
 224 static struct usb_request *rockusb_start_ep(struct usb_ep *ep)
 225 {
 226         struct usb_request *req;
 227
 228         req = usb_ep_alloc_request(ep, 0);
 229         if (!req)
 230                 return NULL;
 231
 232         req->length = EP_BUFFER_SIZE;
 233         req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE, EP_BUFFER_SIZE);
 234         if (!req->buf) {
 235                 usb_ep_free_request(ep, req);
 236                 return NULL;
 237         }
 238         memset(req->buf, 0, req->length);
 239
 240         return req;
 241 }
 242
 243 static int rockusb_set_alt(struct usb_function *f, unsigned int interface,
 244                            unsigned int alt)
 245 {
 246         int ret;
 247         struct usb_composite_dev *cdev = f->config->cdev;
 248         struct usb_gadget *gadget = cdev->gadget;
 249         struct f_rockusb *f_rkusb = func_to_rockusb(f);
 250         const struct usb_endpoint_descriptor *d;
 251
 252         debug("%s: func: %s intf: %d alt: %d\n",
 253               __func__, f->name, interface, alt);
 254
 255         d = rkusb_ep_desc(gadget, &fs_ep_out, &hs_ep_out);
 256         ret = usb_ep_enable(f_rkusb->out_ep, d);
 257         if (ret) {
 258                 printf("failed to enable out ep\n");
 259                 return ret;
 260         }
 261
 262         f_rkusb->out_req = rockusb_start_ep(f_rkusb->out_ep);
 263         if (!f_rkusb->out_req) {
 264                 printf("failed to alloc out req\n");
 265                 ret = -EINVAL;
 266                 goto err;
 267         }
 268         f_rkusb->out_req->complete = rx_handler_command;
 269
 270         d = rkusb_ep_desc(gadget, &fs_ep_in, &hs_ep_in);
 271         ret = usb_ep_enable(f_rkusb->in_ep, d);
 272         if (ret) {
 273                 printf("failed to enable in ep\n");
 274                 goto err;
 275         }
 276
 277         f_rkusb->in_req = rockusb_start_ep(f_rkusb->in_ep);
 278         if (!f_rkusb->in_req) {
 279                 printf("failed alloc req in\n");
 280                 ret = -EINVAL;
 281                 goto err;
 282         }
 283         f_rkusb->in_req->complete = rockusb_complete;
 284
 285         ret = usb_ep_queue(f_rkusb->out_ep, f_rkusb->out_req, 0);
 286         if (ret)
 287                 goto err;
 288
 289         return 0;
 290 err:
 291         rockusb_disable(f);
 292         return ret;
 293 }
 294
 295 static int rockusb_add(struct usb_configuration *c)
 296 {
 297         struct f_rockusb *f_rkusb = get_rkusb();
 298         int status;
 299
 300         debug("%s: cdev: 0x%p\n", __func__, c->cdev);
 301
 302         f_rkusb->usb_function.name = "f_rockusb";
 303         f_rkusb->usb_function.bind = rockusb_bind;
 304         f_rkusb->usb_function.unbind = rockusb_unbind;
 305         f_rkusb->usb_function.set_alt = rockusb_set_alt;
 306         f_rkusb->usb_function.disable = rockusb_disable;
 307         f_rkusb->usb_function.strings = rkusb_strings;
 308
 309         status = usb_add_function(c, &f_rkusb->usb_function);
 310         if (status) {
 311                 free(f_rkusb);
 312                 rockusb_func = f_rkusb;
 313         }
 314         return status;
 315 }
 316
 317 void rockusb_dev_init(char *dev_type, int dev_index)
 318 {
 319         struct f_rockusb *f_rkusb = get_rkusb();
 320
 321         f_rkusb->dev_type = dev_type;
 322         f_rkusb->dev_index = dev_index;
 323 }
 324
 325 DECLARE_GADGET_BIND_CALLBACK(usb_dnl_rockusb, rockusb_add);
 326
 327 static int rockusb_tx_write(const char *buffer, unsigned int buffer_size)
 328 {
 329         struct usb_request *in_req = rockusb_func->in_req;
 330         int ret;
 331
 332         memcpy(in_req->buf, buffer, buffer_size);
 333         in_req->length = buffer_size;
 334         debug("Transferring 0x%x bytes\n", buffer_size);
 335         usb_ep_dequeue(rockusb_func->in_ep, in_req);
 336         ret = usb_ep_queue(rockusb_func->in_ep, in_req, 0);
 337         if (ret)
 338                 printf("Error %d on queue\n", ret);
 339         return 0;
 340 }
 341
 342 static int rockusb_tx_write_str(const char *buffer)
 343 {
 344         return rockusb_tx_write(buffer, strlen(buffer));
 345 }
 346
 347 #ifdef DEBUG
 348 static void printcbw(char *buf)
 349 {
 350         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 351                                  sizeof(struct fsg_bulk_cb_wrap));
 352
 353         memcpy((char *)cbw, buf, USB_BULK_CB_WRAP_LEN);
 354
 355         debug("cbw: signature:%x\n", cbw->signature);
 356         debug("cbw: tag=%x\n", cbw->tag);
 357         debug("cbw: data_transfer_length=%d\n", cbw->data_transfer_length);
 358         debug("cbw: flags=%x\n", cbw->flags);
 359         debug("cbw: lun=%d\n", cbw->lun);
 360         debug("cbw: length=%d\n", cbw->length);
 361         debug("cbw: ucOperCode=%x\n", cbw->CDB[0]);
 362         debug("cbw: ucReserved=%x\n", cbw->CDB[1]);
 363         debug("cbw: dwAddress:%x %x %x %x\n", cbw->CDB[5], cbw->CDB[4],
 364               cbw->CDB[3], cbw->CDB[2]);
 365         debug("cbw: ucReserved2=%x\n", cbw->CDB[6]);
 366         debug("cbw: uslength:%x %x\n", cbw->CDB[8], cbw->CDB[7]);
 367 }
 368
 369 static void printcsw(char *buf)
 370 {
 371         ALLOC_CACHE_ALIGN_BUFFER(struct bulk_cs_wrap, csw,
 372                                  sizeof(struct bulk_cs_wrap));
 373         memcpy((char *)csw, buf, USB_BULK_CS_WRAP_LEN);
 374         debug("csw: signature:%x\n", csw->signature);
 375         debug("csw: tag:%x\n", csw->tag);
 376         debug("csw: residue:%x\n", csw->residue);
 377         debug("csw: status:%x\n", csw->status);
 378 }
 379 #endif
 380
 381 static int rockusb_tx_write_csw(u32 tag, int residue, u8 status, int size)
 382 {
 383         ALLOC_CACHE_ALIGN_BUFFER(struct bulk_cs_wrap, csw,
 384                                  sizeof(struct bulk_cs_wrap));
 385         csw->signature = cpu_to_le32(USB_BULK_CS_SIG);
 386         csw->tag = tag;
 387         csw->residue = cpu_to_be32(residue);
 388         csw->status = status;
 389 #ifdef DEBUG
 390         printcsw((char *)csw);
 391 #endif
 392         return rockusb_tx_write((char *)csw, size);
 393 }
 394
 395 static void tx_handler_send_csw(struct usb_ep *ep, struct usb_request *req)
 396 {
 397         struct f_rockusb *f_rkusb = get_rkusb();
 398         int status = req->status;
 399
 400         if (status)
 401                 debug("status: %d ep '%s' trans: %d\n",
 402                       status, ep->name, req->actual);
 403
 404         /* Return back to default in_req complete function after sending CSW */
 405         req->complete = rockusb_complete;
 406         rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_GOOD, USB_BULK_CS_WRAP_LEN);
 407 }
 408
 409 static unsigned int rx_bytes_expected(struct usb_ep *ep)
 410 {
 411         struct f_rockusb *f_rkusb = get_rkusb();
 412         int rx_remain = f_rkusb->dl_size - f_rkusb->dl_bytes;
 413         unsigned int rem;
 414         unsigned int maxpacket = ep->maxpacket;
 415
 416         if (rx_remain <= 0)
 417                 return 0;
 418         else if (rx_remain > EP_BUFFER_SIZE)
 419                 return EP_BUFFER_SIZE;
 420
 421         rem = rx_remain % maxpacket;
 422         if (rem > 0)
 423                 rx_remain = rx_remain + (maxpacket - rem);
 424
 425         return rx_remain;
 426 }
 427
 428 /* usb_request complete call back to handle upload image */
 429 static void tx_handler_ul_image(struct usb_ep *ep, struct usb_request *req)
 430 {
 431         ALLOC_CACHE_ALIGN_BUFFER(char, rbuffer, RKBLOCK_BUF_SIZE);
 432         struct f_rockusb *f_rkusb = get_rkusb();
 433         struct usb_request *in_req = rockusb_func->in_req;
 434         int ret;
 435
 436         /* Print error status of previous transfer */
 437         if (req->status)
 438                 debug("status: %d ep '%s' trans: %d len %d\n", req->status,
 439                       ep->name, req->actual, req->length);
 440
 441         /* On transfer complete reset in_req and feedback host with CSW_GOOD */
 442         if (f_rkusb->ul_bytes >= f_rkusb->ul_size) {
 443                 in_req->length = 0;
 444                 in_req->complete = rockusb_complete;
 445
 446                 rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_GOOD,
 447                                      USB_BULK_CS_WRAP_LEN);
 448                 return;
 449         }
 450
 451         /* Proceed with current chunk */
 452         unsigned int transfer_size = f_rkusb->ul_size - f_rkusb->ul_bytes;
 453
 454         if (transfer_size > RKBLOCK_BUF_SIZE)
 455                 transfer_size = RKBLOCK_BUF_SIZE;
 456         /* Read at least one block */
 457         unsigned int blkcount = (transfer_size + f_rkusb->desc->blksz - 1) /
 458                                 f_rkusb->desc->blksz;
 459
 460         debug("ul %x bytes, %x blks, read lba %x, ul_size:%x, ul_bytes:%x, ",
 461               transfer_size, blkcount, f_rkusb->lba,
 462               f_rkusb->ul_size, f_rkusb->ul_bytes);
 463
 464         int blks = blk_dread(f_rkusb->desc, f_rkusb->lba, blkcount, rbuffer);
 465
 466         if (blks != blkcount) {
 467                 printf("failed reading from device %s: %d\n",
 468                        f_rkusb->dev_type, f_rkusb->dev_index);
 469                 rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_FAIL,
 470                                      USB_BULK_CS_WRAP_LEN);
 471                 return;
 472         }
 473         f_rkusb->lba += blkcount;
 474         f_rkusb->ul_bytes += transfer_size;
 475
 476         /* Proceed with USB request */
 477         memcpy(in_req->buf, rbuffer, transfer_size);
 478         in_req->length = transfer_size;
 479         in_req->complete = tx_handler_ul_image;
 480         debug("Uploading 0x%x bytes\n", transfer_size);
 481         usb_ep_dequeue(rockusb_func->in_ep, in_req);
 482         ret = usb_ep_queue(rockusb_func->in_ep, in_req, 0);
 483         if (ret)
 484                 printf("Error %d on queue\n", ret);
 485 }
 486
 487 /* usb_request complete call back to handle down load image */
 488 static void rx_handler_dl_image(struct usb_ep *ep, struct usb_request *req)
 489 {
 490         struct f_rockusb *f_rkusb = get_rkusb();
 491         unsigned int transfer_size = 0;
 492         const unsigned char *buffer = req->buf;
 493         unsigned int buffer_size = req->actual;
 494
 495         transfer_size = f_rkusb->dl_size - f_rkusb->dl_bytes;
 496
 497         if (req->status != 0) {
 498                 printf("Bad status: %d\n", req->status);
 499                 rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_FAIL,
 500                                      USB_BULK_CS_WRAP_LEN);
 501                 return;
 502         }
 503
 504         if (buffer_size < transfer_size)
 505                 transfer_size = buffer_size;
 506
 507         memcpy((void *)f_rkusb->buf, buffer, transfer_size);
 508         f_rkusb->dl_bytes += transfer_size;
 509         int blks = 0, blkcnt = transfer_size  / f_rkusb->desc->blksz;
 510
 511         debug("dl %x bytes, %x blks, write lba %x, dl_size:%x, dl_bytes:%x, ",
 512               transfer_size, blkcnt, f_rkusb->lba, f_rkusb->dl_size,
 513               f_rkusb->dl_bytes);
 514         blks = blk_dwrite(f_rkusb->desc, f_rkusb->lba, blkcnt, f_rkusb->buf);
 515         if (blks != blkcnt) {
 516                 printf("failed writing to device %s: %d\n", f_rkusb->dev_type,
 517                        f_rkusb->dev_index);
 518                 rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_FAIL,
 519                                      USB_BULK_CS_WRAP_LEN);
 520                 return;
 521         }
 522         f_rkusb->lba += blkcnt;
 523
 524         /* Check if transfer is done */
 525         if (f_rkusb->dl_bytes >= f_rkusb->dl_size) {
 526                 req->complete = rx_handler_command;
 527                 req->length = EP_BUFFER_SIZE;
 528                 f_rkusb->buf = f_rkusb->buf_head;
 529                 debug("transfer 0x%x bytes done\n", f_rkusb->dl_size);
 530                 f_rkusb->dl_size = 0;
 531                 rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_GOOD,
 532                                      USB_BULK_CS_WRAP_LEN);
 533         } else {
 534                 req->length = rx_bytes_expected(ep);
 535                 if (f_rkusb->buf == f_rkusb->buf_head)
 536                         f_rkusb->buf = f_rkusb->buf_head + EP_BUFFER_SIZE;
 537                 else
 538                         f_rkusb->buf = f_rkusb->buf_head;
 539
 540                 debug("remain %x bytes, %lx sectors\n", req->length,
 541                       req->length / f_rkusb->desc->blksz);
 542         }
 543
 544         req->actual = 0;
 545         usb_ep_queue(ep, req, 0);
 546 }
 547
 548 static void cb_test_unit_ready(struct usb_ep *ep, struct usb_request *req)
 549 {
 550         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 551                                  sizeof(struct fsg_bulk_cb_wrap));
 552
 553         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 554
 555         rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length,
 556                              CSW_GOOD, USB_BULK_CS_WRAP_LEN);
 557 }
 558
 559 static void cb_read_storage_id(struct usb_ep *ep, struct usb_request *req)
 560 {
 561         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 562                                  sizeof(struct fsg_bulk_cb_wrap));
 563         struct f_rockusb *f_rkusb = get_rkusb();
 564         char emmc_id[] = "EMMC ";
 565
 566         printf("read storage id\n");
 567         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 568
 569         /* Prepare for sending subsequent CSW_GOOD */
 570         f_rkusb->tag = cbw->tag;
 571         f_rkusb->in_req->complete = tx_handler_send_csw;
 572
 573         rockusb_tx_write_str(emmc_id);
 574 }
 575
 576 int __weak rk_get_bootrom_chip_version(unsigned int *chip_info, int size)
 577 {
 578         return 0;
 579 }
 580
 581 static void cb_get_chip_version(struct usb_ep *ep, struct usb_request *req)
 582 {
 583         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 584                                  sizeof(struct fsg_bulk_cb_wrap));
 585         struct f_rockusb *f_rkusb = get_rkusb();
 586         unsigned int chip_info[4], i;
 587
 588         memset(chip_info, 0, sizeof(chip_info));
 589         rk_get_bootrom_chip_version(chip_info, 4);
 590
 591         /*
 592          * Chip Version is a string saved in BOOTROM address space Little Endian
 593          *
 594          * Ex for rk3288: 0x33323041 0x32303134 0x30383133 0x56323030
 595          * which brings:  320A20140813V200
 596          *
 597          * Note that memory version do invert MSB/LSB so printing the char
 598          * buffer will show: A02341023180002V
 599          */
 600         printf("read chip version: ");
 601         for (i = 0; i < 4; i++) {
 602                 printf("%c%c%c%c",
 603                        (chip_info[i] >> 24) & 0xFF,
 604                        (chip_info[i] >> 16) & 0xFF,
 605                        (chip_info[i] >>  8) & 0xFF,
 606                        (chip_info[i] >>  0) & 0xFF);
 607         }
 608         printf("\n");
 609         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 610
 611         /* Prepare for sending subsequent CSW_GOOD */
 612         f_rkusb->tag = cbw->tag;
 613         f_rkusb->in_req->complete = tx_handler_send_csw;
 614
 615         rockusb_tx_write((char *)chip_info, sizeof(chip_info));
 616 }
 617
 618 static void cb_read_lba(struct usb_ep *ep, struct usb_request *req)
 619 {
 620         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 621                                  sizeof(struct fsg_bulk_cb_wrap));
 622         struct f_rockusb *f_rkusb = get_rkusb();
 623         int sector_count;
 624
 625         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 626         sector_count = (int)get_unaligned_be16(&cbw->CDB[7]);
 627         f_rkusb->tag = cbw->tag;
 628
 629         if (!f_rkusb->desc) {
 630                 char *type = f_rkusb->dev_type;
 631                 int index = f_rkusb->dev_index;
 632
 633                 f_rkusb->desc = blk_get_dev(type, index);
 634                 if (!f_rkusb->desc ||
 635                     f_rkusb->desc->type == DEV_TYPE_UNKNOWN) {
 636                         printf("invalid device \"%s\", %d\n", type, index);
 637                         rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_FAIL,
 638                                              USB_BULK_CS_WRAP_LEN);
 639                         return;
 640                 }
 641         }
 642
 643         f_rkusb->lba = get_unaligned_be32(&cbw->CDB[2]);
 644         f_rkusb->ul_size = sector_count * f_rkusb->desc->blksz;
 645         f_rkusb->ul_bytes = 0;
 646
 647         debug("require read %x bytes, %x sectors from lba %x\n",
 648               f_rkusb->ul_size, sector_count, f_rkusb->lba);
 649
 650         if (f_rkusb->ul_size == 0)  {
 651                 rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length,
 652                                      CSW_FAIL, USB_BULK_CS_WRAP_LEN);
 653                 return;
 654         }
 655
 656         /* Start right now sending first chunk */
 657         tx_handler_ul_image(ep, req);
 658 }
 659
 660 static void cb_write_lba(struct usb_ep *ep, struct usb_request *req)
 661 {
 662         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 663                                  sizeof(struct fsg_bulk_cb_wrap));
 664         struct f_rockusb *f_rkusb = get_rkusb();
 665         int sector_count;
 666
 667         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 668         sector_count = (int)get_unaligned_be16(&cbw->CDB[7]);
 669         f_rkusb->tag = cbw->tag;
 670
 671         if (!f_rkusb->desc) {
 672                 char *type = f_rkusb->dev_type;
 673                 int index = f_rkusb->dev_index;
 674
 675                 f_rkusb->desc = blk_get_dev(type, index);
 676                 if (!f_rkusb->desc ||
 677                     f_rkusb->desc->type == DEV_TYPE_UNKNOWN) {
 678                         printf("invalid device \"%s\", %d\n", type, index);
 679                         rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_FAIL,
 680                                              USB_BULK_CS_WRAP_LEN);
 681                         return;
 682                 }
 683         }
 684
 685         f_rkusb->lba = get_unaligned_be32(&cbw->CDB[2]);
 686         f_rkusb->dl_size = sector_count * f_rkusb->desc->blksz;
 687         f_rkusb->dl_bytes = 0;
 688
 689         debug("require write %x bytes, %x sectors to lba %x\n",
 690               f_rkusb->dl_size, sector_count, f_rkusb->lba);
 691
 692         if (f_rkusb->dl_size == 0)  {
 693                 rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length,
 694                                      CSW_FAIL, USB_BULK_CS_WRAP_LEN);
 695         } else {
 696                 req->complete = rx_handler_dl_image;
 697                 req->length = rx_bytes_expected(ep);
 698         }
 699 }
 700
 701 static void cb_erase_lba(struct usb_ep *ep, struct usb_request *req)
 702 {
 703         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 704                                  sizeof(struct fsg_bulk_cb_wrap));
 705         struct f_rockusb *f_rkusb = get_rkusb();
 706         int sector_count, lba, blks;
 707
 708         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 709         sector_count = (int)get_unaligned_be16(&cbw->CDB[7]);
 710         f_rkusb->tag = cbw->tag;
 711
 712         if (!f_rkusb->desc) {
 713                 char *type = f_rkusb->dev_type;
 714                 int index = f_rkusb->dev_index;
 715
 716                 f_rkusb->desc = blk_get_dev(type, index);
 717                 if (!f_rkusb->desc ||
 718                     f_rkusb->desc->type == DEV_TYPE_UNKNOWN) {
 719                         printf("invalid device \"%s\", %d\n", type, index);
 720                         rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_FAIL,
 721                                              USB_BULK_CS_WRAP_LEN);
 722                         return;
 723                 }
 724         }
 725
 726         lba = get_unaligned_be32(&cbw->CDB[2]);
 727
 728         debug("require erase %x sectors from lba %x\n",
 729               sector_count, lba);
 730
 731         blks = blk_derase(f_rkusb->desc, lba, sector_count);
 732         if (blks != sector_count) {
 733                 printf("failed erasing device %s: %d\n", f_rkusb->dev_type,
 734                        f_rkusb->dev_index);
 735                 rockusb_tx_write_csw(f_rkusb->tag,
 736                                      cbw->data_transfer_length, CSW_FAIL,
 737                                      USB_BULK_CS_WRAP_LEN);
 738                 return;
 739         }
 740
 741         rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length, CSW_GOOD,
 742                              USB_BULK_CS_WRAP_LEN);
 743 }
 744
 745 void __weak rkusb_set_reboot_flag(int flag)
 746 {
 747         struct f_rockusb *f_rkusb = get_rkusb();
 748
 749         printf("rockkusb set reboot flag: %d\n", f_rkusb->reboot_flag);
 750 }
 751
 752 static void compl_do_reset(struct usb_ep *ep, struct usb_request *req)
 753 {
 754         struct f_rockusb *f_rkusb = get_rkusb();
 755
 756         rkusb_set_reboot_flag(f_rkusb->reboot_flag);
 757         do_reset(NULL, 0, 0, NULL);
 758 }
 759
 760 static void cb_reboot(struct usb_ep *ep, struct usb_request *req)
 761 {
 762         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 763                                  sizeof(struct fsg_bulk_cb_wrap));
 764         struct f_rockusb *f_rkusb = get_rkusb();
 765
 766         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 767         f_rkusb->reboot_flag = cbw->CDB[1];
 768         rockusb_func->in_req->complete = compl_do_reset;
 769         rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length, CSW_GOOD,
 770                              USB_BULK_CS_WRAP_LEN);
 771 }
 772
 773 static void cb_not_support(struct usb_ep *ep, struct usb_request *req)
 774 {
 775         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 776                                  sizeof(struct fsg_bulk_cb_wrap));
 777
 778         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 779         printf("Rockusb command %x not support yet\n", cbw->CDB[0]);
 780         rockusb_tx_write_csw(cbw->tag, 0, CSW_FAIL, USB_BULK_CS_WRAP_LEN);
 781 }
 782
 783 static const struct cmd_dispatch_info cmd_dispatch_info[] = {
 784         {
 785                 .cmd = K_FW_TEST_UNIT_READY,
 786                 .cb = cb_test_unit_ready,
 787         },
 788         {
 789                 .cmd = K_FW_READ_FLASH_ID,
 790                 .cb = cb_read_storage_id,
 791         },
 792         {
 793                 .cmd = K_FW_SET_DEVICE_ID,
 794                 .cb = cb_not_support,
 795         },
 796         {
 797                 .cmd = K_FW_TEST_BAD_BLOCK,
 798                 .cb = cb_not_support,
 799         },
 800         {
 801                 .cmd = K_FW_READ_10,
 802                 .cb = cb_not_support,
 803         },
 804         {
 805                 .cmd = K_FW_WRITE_10,
 806                 .cb = cb_not_support,
 807         },
 808         {
 809                 .cmd = K_FW_ERASE_10,
 810                 .cb = cb_not_support,
 811         },
 812         {
 813                 .cmd = K_FW_WRITE_SPARE,
 814                 .cb = cb_not_support,
 815         },
 816         {
 817                 .cmd = K_FW_READ_SPARE,
 818                 .cb = cb_not_support,
 819         },
 820         {
 821                 .cmd = K_FW_ERASE_10_FORCE,
 822                 .cb = cb_not_support,
 823         },
 824         {
 825                 .cmd = K_FW_GET_VERSION,
 826                 .cb = cb_not_support,
 827         },
 828         {
 829                 .cmd = K_FW_LBA_READ_10,
 830                 .cb = cb_read_lba,
 831         },
 832         {
 833                 .cmd = K_FW_LBA_WRITE_10,
 834                 .cb = cb_write_lba,
 835         },
 836         {
 837                 .cmd = K_FW_ERASE_SYS_DISK,
 838                 .cb = cb_not_support,
 839         },
 840         {
 841                 .cmd = K_FW_SDRAM_READ_10,
 842                 .cb = cb_not_support,
 843         },
 844         {
 845                 .cmd = K_FW_SDRAM_WRITE_10,
 846                 .cb = cb_not_support,
 847         },
 848         {
 849                 .cmd = K_FW_SDRAM_EXECUTE,
 850                 .cb = cb_not_support,
 851         },
 852         {
 853                 .cmd = K_FW_READ_FLASH_INFO,
 854                 .cb = cb_not_support,
 855         },
 856         {
 857                 .cmd = K_FW_GET_CHIP_VER,
 858                 .cb = cb_get_chip_version,
 859         },
 860         {
 861                 .cmd = K_FW_LOW_FORMAT,
 862                 .cb = cb_not_support,
 863         },
 864         {
 865                 .cmd = K_FW_SET_RESET_FLAG,
 866                 .cb = cb_not_support,
 867         },
 868         {
 869                 .cmd = K_FW_SPI_READ_10,
 870                 .cb = cb_not_support,
 871         },
 872         {
 873                 .cmd = K_FW_SPI_WRITE_10,
 874                 .cb = cb_not_support,
 875         },
 876         {
 877                 .cmd = K_FW_LBA_ERASE_10,
 878                 .cb = cb_erase_lba,
 879         },
 880         {
 881                 .cmd = K_FW_SESSION,
 882                 .cb = cb_not_support,
 883         },
 884         {
 885                 .cmd = K_FW_RESET,
 886                 .cb = cb_reboot,
 887         },
 888 };
 889
 890 static void rx_handler_command(struct usb_ep *ep, struct usb_request *req)
 891 {
 892         void (*func_cb)(struct usb_ep *ep, struct usb_request *req) = NULL;
 893
 894         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 895                                  sizeof(struct fsg_bulk_cb_wrap));
 896         char *cmdbuf = req->buf;
 897         int i;
 898
 899         if (req->status || req->length == 0)
 900                 return;
 901
 902         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 903 #ifdef DEBUG
 904         printcbw(req->buf);
 905 #endif
 906
 907         for (i = 0; i < ARRAY_SIZE(cmd_dispatch_info); i++) {
 908                 if (cmd_dispatch_info[i].cmd == cbw->CDB[0]) {
 909                         func_cb = cmd_dispatch_info[i].cb;
 910                         break;
 911                 }
 912         }
 913
 914         if (!func_cb) {
 915                 printf("unknown command: %s\n", (char *)req->buf);
 916                 rockusb_tx_write_str("FAILunknown command");
 917         } else {
 918                 if (req->actual < req->length) {
 919                         u8 *buf = (u8 *)req->buf;
 920
 921                         buf[req->actual] = 0;
 922                         func_cb(ep, req);
 923                 } else {
 924                         puts("buffer overflow\n");
 925                         rockusb_tx_write_str("FAILbuffer overflow");
 926                 }
 927         }
 928
 929         *cmdbuf = '\0';
 930         req->actual = 0;
 931         usb_ep_queue(ep, req, 0);
 932 }