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 <log.h>
  13 #include <malloc.h>
  14 #include <memalign.h>
  15 #include <part.h>
  16 #include <linux/usb/ch9.h>
  17 #include <linux/usb/gadget.h>
  18 #include <linux/usb/composite.h>
  19 #include <linux/compiler.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 NULL;
 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 NULL;
 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->buf_head);
 312                 free(f_rkusb);
 313                 rockusb_func = NULL;
 314         }
 315         return status;
 316 }
 317
 318 void rockusb_dev_init(char *dev_type, int dev_index)
 319 {
 320         struct f_rockusb *f_rkusb = get_rkusb();
 321
 322         f_rkusb->dev_type = dev_type;
 323         f_rkusb->dev_index = dev_index;
 324 }
 325
 326 DECLARE_GADGET_BIND_CALLBACK(usb_dnl_rockusb, rockusb_add);
 327
 328 static int rockusb_tx_write(const char *buffer, unsigned int buffer_size)
 329 {
 330         struct usb_request *in_req = rockusb_func->in_req;
 331         int ret;
 332
 333         memcpy(in_req->buf, buffer, buffer_size);
 334         in_req->length = buffer_size;
 335         debug("Transferring 0x%x bytes\n", buffer_size);
 336         usb_ep_dequeue(rockusb_func->in_ep, in_req);
 337         ret = usb_ep_queue(rockusb_func->in_ep, in_req, 0);
 338         if (ret)
 339                 printf("Error %d on queue\n", ret);
 340         return 0;
 341 }
 342
 343 static int rockusb_tx_write_str(const char *buffer)
 344 {
 345         return rockusb_tx_write(buffer, strlen(buffer));
 346 }
 347
 348 #ifdef DEBUG
 349 static void printcbw(char *buf)
 350 {
 351         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 352                                  sizeof(struct fsg_bulk_cb_wrap));
 353
 354         memcpy((char *)cbw, buf, USB_BULK_CB_WRAP_LEN);
 355
 356         debug("cbw: signature:%x\n", cbw->signature);
 357         debug("cbw: tag=%x\n", cbw->tag);
 358         debug("cbw: data_transfer_length=%d\n", cbw->data_transfer_length);
 359         debug("cbw: flags=%x\n", cbw->flags);
 360         debug("cbw: lun=%d\n", cbw->lun);
 361         debug("cbw: length=%d\n", cbw->length);
 362         debug("cbw: ucOperCode=%x\n", cbw->CDB[0]);
 363         debug("cbw: ucReserved=%x\n", cbw->CDB[1]);
 364         debug("cbw: dwAddress:%x %x %x %x\n", cbw->CDB[5], cbw->CDB[4],
 365               cbw->CDB[3], cbw->CDB[2]);
 366         debug("cbw: ucReserved2=%x\n", cbw->CDB[6]);
 367         debug("cbw: uslength:%x %x\n", cbw->CDB[8], cbw->CDB[7]);
 368 }
 369
 370 static void printcsw(char *buf)
 371 {
 372         ALLOC_CACHE_ALIGN_BUFFER(struct bulk_cs_wrap, csw,
 373                                  sizeof(struct bulk_cs_wrap));
 374         memcpy((char *)csw, buf, USB_BULK_CS_WRAP_LEN);
 375         debug("csw: signature:%x\n", csw->signature);
 376         debug("csw: tag:%x\n", csw->tag);
 377         debug("csw: residue:%x\n", csw->residue);
 378         debug("csw: status:%x\n", csw->status);
 379 }
 380 #endif
 381
 382 static int rockusb_tx_write_csw(u32 tag, int residue, u8 status, int size)
 383 {
 384         ALLOC_CACHE_ALIGN_BUFFER(struct bulk_cs_wrap, csw,
 385                                  sizeof(struct bulk_cs_wrap));
 386         csw->signature = cpu_to_le32(USB_BULK_CS_SIG);
 387         csw->tag = tag;
 388         csw->residue = cpu_to_be32(residue);
 389         csw->status = status;
 390 #ifdef DEBUG
 391         printcsw((char *)csw);
 392 #endif
 393         return rockusb_tx_write((char *)csw, size);
 394 }
 395
 396 static void tx_handler_send_csw(struct usb_ep *ep, struct usb_request *req)
 397 {
 398         struct f_rockusb *f_rkusb = get_rkusb();
 399         int status = req->status;
 400
 401         if (status)
 402                 debug("status: %d ep '%s' trans: %d\n",
 403                       status, ep->name, req->actual);
 404
 405         /* Return back to default in_req complete function after sending CSW */
 406         req->complete = rockusb_complete;
 407         rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_GOOD, USB_BULK_CS_WRAP_LEN);
 408 }
 409
 410 static unsigned int rx_bytes_expected(struct usb_ep *ep)
 411 {
 412         struct f_rockusb *f_rkusb = get_rkusb();
 413         int rx_remain = f_rkusb->dl_size - f_rkusb->dl_bytes;
 414         unsigned int rem;
 415         unsigned int maxpacket = ep->maxpacket;
 416
 417         if (rx_remain <= 0)
 418                 return 0;
 419         else if (rx_remain > EP_BUFFER_SIZE)
 420                 return EP_BUFFER_SIZE;
 421
 422         rem = rx_remain % maxpacket;
 423         if (rem > 0)
 424                 rx_remain = rx_remain + (maxpacket - rem);
 425
 426         return rx_remain;
 427 }
 428
 429 /* usb_request complete call back to handle upload image */
 430 static void tx_handler_ul_image(struct usb_ep *ep, struct usb_request *req)
 431 {
 432         ALLOC_CACHE_ALIGN_BUFFER(char, rbuffer, RKBLOCK_BUF_SIZE);
 433         struct f_rockusb *f_rkusb = get_rkusb();
 434         struct usb_request *in_req = rockusb_func->in_req;
 435         int ret;
 436
 437         /* Print error status of previous transfer */
 438         if (req->status)
 439                 debug("status: %d ep '%s' trans: %d len %d\n", req->status,
 440                       ep->name, req->actual, req->length);
 441
 442         /* On transfer complete reset in_req and feedback host with CSW_GOOD */
 443         if (f_rkusb->ul_bytes >= f_rkusb->ul_size) {
 444                 in_req->length = 0;
 445                 in_req->complete = rockusb_complete;
 446
 447                 rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_GOOD,
 448                                      USB_BULK_CS_WRAP_LEN);
 449                 return;
 450         }
 451
 452         /* Proceed with current chunk */
 453         unsigned int transfer_size = f_rkusb->ul_size - f_rkusb->ul_bytes;
 454
 455         if (transfer_size > RKBLOCK_BUF_SIZE)
 456                 transfer_size = RKBLOCK_BUF_SIZE;
 457         /* Read at least one block */
 458         unsigned int blkcount = (transfer_size + f_rkusb->desc->blksz - 1) /
 459                                 f_rkusb->desc->blksz;
 460
 461         debug("ul %x bytes, %x blks, read lba %x, ul_size:%x, ul_bytes:%x, ",
 462               transfer_size, blkcount, f_rkusb->lba,
 463               f_rkusb->ul_size, f_rkusb->ul_bytes);
 464
 465         int blks = blk_dread(f_rkusb->desc, f_rkusb->lba, blkcount, rbuffer);
 466
 467         if (blks != blkcount) {
 468                 printf("failed reading from device %s: %d\n",
 469                        f_rkusb->dev_type, f_rkusb->dev_index);
 470                 rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_FAIL,
 471                                      USB_BULK_CS_WRAP_LEN);
 472                 return;
 473         }
 474         f_rkusb->lba += blkcount;
 475         f_rkusb->ul_bytes += transfer_size;
 476
 477         /* Proceed with USB request */
 478         memcpy(in_req->buf, rbuffer, transfer_size);
 479         in_req->length = transfer_size;
 480         in_req->complete = tx_handler_ul_image;
 481         debug("Uploading 0x%x bytes\n", transfer_size);
 482         usb_ep_dequeue(rockusb_func->in_ep, in_req);
 483         ret = usb_ep_queue(rockusb_func->in_ep, in_req, 0);
 484         if (ret)
 485                 printf("Error %d on queue\n", ret);
 486 }
 487
 488 /* usb_request complete call back to handle down load image */
 489 static void rx_handler_dl_image(struct usb_ep *ep, struct usb_request *req)
 490 {
 491         struct f_rockusb *f_rkusb = get_rkusb();
 492         unsigned int transfer_size = 0;
 493         const unsigned char *buffer = req->buf;
 494         unsigned int buffer_size = req->actual;
 495
 496         transfer_size = f_rkusb->dl_size - f_rkusb->dl_bytes;
 497
 498         if (req->status != 0) {
 499                 printf("Bad status: %d\n", req->status);
 500                 rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_FAIL,
 501                                      USB_BULK_CS_WRAP_LEN);
 502                 return;
 503         }
 504
 505         if (buffer_size < transfer_size)
 506                 transfer_size = buffer_size;
 507
 508         memcpy((void *)f_rkusb->buf, buffer, transfer_size);
 509         f_rkusb->dl_bytes += transfer_size;
 510         int blks = 0, blkcnt = transfer_size  / f_rkusb->desc->blksz;
 511
 512         debug("dl %x bytes, %x blks, write lba %x, dl_size:%x, dl_bytes:%x, ",
 513               transfer_size, blkcnt, f_rkusb->lba, f_rkusb->dl_size,
 514               f_rkusb->dl_bytes);
 515         blks = blk_dwrite(f_rkusb->desc, f_rkusb->lba, blkcnt, f_rkusb->buf);
 516         if (blks != blkcnt) {
 517                 printf("failed writing to device %s: %d\n", f_rkusb->dev_type,
 518                        f_rkusb->dev_index);
 519                 rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_FAIL,
 520                                      USB_BULK_CS_WRAP_LEN);
 521                 return;
 522         }
 523         f_rkusb->lba += blkcnt;
 524
 525         /* Check if transfer is done */
 526         if (f_rkusb->dl_bytes >= f_rkusb->dl_size) {
 527                 req->complete = rx_handler_command;
 528                 req->length = EP_BUFFER_SIZE;
 529                 f_rkusb->buf = f_rkusb->buf_head;
 530                 debug("transfer 0x%x bytes done\n", f_rkusb->dl_size);
 531                 f_rkusb->dl_size = 0;
 532                 rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_GOOD,
 533                                      USB_BULK_CS_WRAP_LEN);
 534         } else {
 535                 req->length = rx_bytes_expected(ep);
 536                 if (f_rkusb->buf == f_rkusb->buf_head)
 537                         f_rkusb->buf = f_rkusb->buf_head + EP_BUFFER_SIZE;
 538                 else
 539                         f_rkusb->buf = f_rkusb->buf_head;
 540
 541                 debug("remain %x bytes, %lx sectors\n", req->length,
 542                       req->length / f_rkusb->desc->blksz);
 543         }
 544
 545         req->actual = 0;
 546         usb_ep_queue(ep, req, 0);
 547 }
 548
 549 static void cb_test_unit_ready(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
 554         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 555
 556         rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length,
 557                              CSW_GOOD, USB_BULK_CS_WRAP_LEN);
 558 }
 559
 560 static void cb_read_storage_id(struct usb_ep *ep, struct usb_request *req)
 561 {
 562         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 563                                  sizeof(struct fsg_bulk_cb_wrap));
 564         struct f_rockusb *f_rkusb = get_rkusb();
 565         char emmc_id[] = "EMMC ";
 566
 567         printf("read storage id\n");
 568         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 569
 570         /* Prepare for sending subsequent CSW_GOOD */
 571         f_rkusb->tag = cbw->tag;
 572         f_rkusb->in_req->complete = tx_handler_send_csw;
 573
 574         rockusb_tx_write_str(emmc_id);
 575 }
 576
 577 int __weak rk_get_bootrom_chip_version(unsigned int *chip_info, int size)
 578 {
 579         return 0;
 580 }
 581
 582 static void cb_get_chip_version(struct usb_ep *ep, struct usb_request *req)
 583 {
 584         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 585                                  sizeof(struct fsg_bulk_cb_wrap));
 586         struct f_rockusb *f_rkusb = get_rkusb();
 587         unsigned int chip_info[4], i;
 588
 589         memset(chip_info, 0, sizeof(chip_info));
 590         rk_get_bootrom_chip_version(chip_info, 4);
 591
 592         /*
 593          * Chip Version is a string saved in BOOTROM address space Little Endian
 594          *
 595          * Ex for rk3288: 0x33323041 0x32303134 0x30383133 0x56323030
 596          * which brings:  320A20140813V200
 597          *
 598          * Note that memory version do invert MSB/LSB so printing the char
 599          * buffer will show: A02341023180002V
 600          */
 601         printf("read chip version: ");
 602         for (i = 0; i < 4; i++) {
 603                 printf("%c%c%c%c",
 604                        (chip_info[i] >> 24) & 0xFF,
 605                        (chip_info[i] >> 16) & 0xFF,
 606                        (chip_info[i] >>  8) & 0xFF,
 607                        (chip_info[i] >>  0) & 0xFF);
 608         }
 609         printf("\n");
 610         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 611
 612         /* Prepare for sending subsequent CSW_GOOD */
 613         f_rkusb->tag = cbw->tag;
 614         f_rkusb->in_req->complete = tx_handler_send_csw;
 615
 616         rockusb_tx_write((char *)chip_info, sizeof(chip_info));
 617 }
 618
 619 static void cb_read_lba(struct usb_ep *ep, struct usb_request *req)
 620 {
 621         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 622                                  sizeof(struct fsg_bulk_cb_wrap));
 623         struct f_rockusb *f_rkusb = get_rkusb();
 624         int sector_count;
 625
 626         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 627         sector_count = (int)get_unaligned_be16(&cbw->CDB[7]);
 628         f_rkusb->tag = cbw->tag;
 629
 630         if (!f_rkusb->desc) {
 631                 char *type = f_rkusb->dev_type;
 632                 int index = f_rkusb->dev_index;
 633
 634                 f_rkusb->desc = blk_get_dev(type, index);
 635                 if (!f_rkusb->desc ||
 636                     f_rkusb->desc->type == DEV_TYPE_UNKNOWN) {
 637                         printf("invalid device \"%s\", %d\n", type, index);
 638                         rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_FAIL,
 639                                              USB_BULK_CS_WRAP_LEN);
 640                         return;
 641                 }
 642         }
 643
 644         f_rkusb->lba = get_unaligned_be32(&cbw->CDB[2]);
 645         f_rkusb->ul_size = sector_count * f_rkusb->desc->blksz;
 646         f_rkusb->ul_bytes = 0;
 647
 648         debug("require read %x bytes, %x sectors from lba %x\n",
 649               f_rkusb->ul_size, sector_count, f_rkusb->lba);
 650
 651         if (f_rkusb->ul_size == 0)  {
 652                 rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length,
 653                                      CSW_FAIL, USB_BULK_CS_WRAP_LEN);
 654                 return;
 655         }
 656
 657         /* Start right now sending first chunk */
 658         tx_handler_ul_image(ep, req);
 659 }
 660
 661 static void cb_write_lba(struct usb_ep *ep, struct usb_request *req)
 662 {
 663         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 664                                  sizeof(struct fsg_bulk_cb_wrap));
 665         struct f_rockusb *f_rkusb = get_rkusb();
 666         int sector_count;
 667
 668         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 669         sector_count = (int)get_unaligned_be16(&cbw->CDB[7]);
 670         f_rkusb->tag = cbw->tag;
 671
 672         if (!f_rkusb->desc) {
 673                 char *type = f_rkusb->dev_type;
 674                 int index = f_rkusb->dev_index;
 675
 676                 f_rkusb->desc = blk_get_dev(type, index);
 677                 if (!f_rkusb->desc ||
 678                     f_rkusb->desc->type == DEV_TYPE_UNKNOWN) {
 679                         printf("invalid device \"%s\", %d\n", type, index);
 680                         rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_FAIL,
 681                                              USB_BULK_CS_WRAP_LEN);
 682                         return;
 683                 }
 684         }
 685
 686         f_rkusb->lba = get_unaligned_be32(&cbw->CDB[2]);
 687         f_rkusb->dl_size = sector_count * f_rkusb->desc->blksz;
 688         f_rkusb->dl_bytes = 0;
 689
 690         debug("require write %x bytes, %x sectors to lba %x\n",
 691               f_rkusb->dl_size, sector_count, f_rkusb->lba);
 692
 693         if (f_rkusb->dl_size == 0)  {
 694                 rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length,
 695                                      CSW_FAIL, USB_BULK_CS_WRAP_LEN);
 696         } else {
 697                 req->complete = rx_handler_dl_image;
 698                 req->length = rx_bytes_expected(ep);
 699         }
 700 }
 701
 702 static void cb_erase_lba(struct usb_ep *ep, struct usb_request *req)
 703 {
 704         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 705                                  sizeof(struct fsg_bulk_cb_wrap));
 706         struct f_rockusb *f_rkusb = get_rkusb();
 707         int sector_count, lba, blks;
 708
 709         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 710         sector_count = (int)get_unaligned_be16(&cbw->CDB[7]);
 711         f_rkusb->tag = cbw->tag;
 712
 713         if (!f_rkusb->desc) {
 714                 char *type = f_rkusb->dev_type;
 715                 int index = f_rkusb->dev_index;
 716
 717                 f_rkusb->desc = blk_get_dev(type, index);
 718                 if (!f_rkusb->desc ||
 719                     f_rkusb->desc->type == DEV_TYPE_UNKNOWN) {
 720                         printf("invalid device \"%s\", %d\n", type, index);
 721                         rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_FAIL,
 722                                              USB_BULK_CS_WRAP_LEN);
 723                         return;
 724                 }
 725         }
 726
 727         lba = get_unaligned_be32(&cbw->CDB[2]);
 728
 729         debug("require erase %x sectors from lba %x\n",
 730               sector_count, lba);
 731
 732         blks = blk_derase(f_rkusb->desc, lba, sector_count);
 733         if (blks != sector_count) {
 734                 printf("failed erasing device %s: %d\n", f_rkusb->dev_type,
 735                        f_rkusb->dev_index);
 736                 rockusb_tx_write_csw(f_rkusb->tag,
 737                                      cbw->data_transfer_length, CSW_FAIL,
 738                                      USB_BULK_CS_WRAP_LEN);
 739                 return;
 740         }
 741
 742         rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length, CSW_GOOD,
 743                              USB_BULK_CS_WRAP_LEN);
 744 }
 745
 746 void __weak rkusb_set_reboot_flag(int flag)
 747 {
 748         struct f_rockusb *f_rkusb = get_rkusb();
 749
 750         printf("rockkusb set reboot flag: %d\n", f_rkusb->reboot_flag);
 751 }
 752
 753 static void compl_do_reset(struct usb_ep *ep, struct usb_request *req)
 754 {
 755         struct f_rockusb *f_rkusb = get_rkusb();
 756
 757         rkusb_set_reboot_flag(f_rkusb->reboot_flag);
 758         do_reset(NULL, 0, 0, NULL);
 759 }
 760
 761 static void cb_reboot(struct usb_ep *ep, struct usb_request *req)
 762 {
 763         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 764                                  sizeof(struct fsg_bulk_cb_wrap));
 765         struct f_rockusb *f_rkusb = get_rkusb();
 766
 767         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 768         f_rkusb->reboot_flag = cbw->CDB[1];
 769         rockusb_func->in_req->complete = compl_do_reset;
 770         rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length, CSW_GOOD,
 771                              USB_BULK_CS_WRAP_LEN);
 772 }
 773
 774 static void cb_not_support(struct usb_ep *ep, struct usb_request *req)
 775 {
 776         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 777                                  sizeof(struct fsg_bulk_cb_wrap));
 778
 779         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 780         printf("Rockusb command %x not support yet\n", cbw->CDB[0]);
 781         rockusb_tx_write_csw(cbw->tag, 0, CSW_FAIL, USB_BULK_CS_WRAP_LEN);
 782 }
 783
 784 static const struct cmd_dispatch_info cmd_dispatch_info[] = {
 785         {
 786                 .cmd = K_FW_TEST_UNIT_READY,
 787                 .cb = cb_test_unit_ready,
 788         },
 789         {
 790                 .cmd = K_FW_READ_FLASH_ID,
 791                 .cb = cb_read_storage_id,
 792         },
 793         {
 794                 .cmd = K_FW_SET_DEVICE_ID,
 795                 .cb = cb_not_support,
 796         },
 797         {
 798                 .cmd = K_FW_TEST_BAD_BLOCK,
 799                 .cb = cb_not_support,
 800         },
 801         {
 802                 .cmd = K_FW_READ_10,
 803                 .cb = cb_not_support,
 804         },
 805         {
 806                 .cmd = K_FW_WRITE_10,
 807                 .cb = cb_not_support,
 808         },
 809         {
 810                 .cmd = K_FW_ERASE_10,
 811                 .cb = cb_not_support,
 812         },
 813         {
 814                 .cmd = K_FW_WRITE_SPARE,
 815                 .cb = cb_not_support,
 816         },
 817         {
 818                 .cmd = K_FW_READ_SPARE,
 819                 .cb = cb_not_support,
 820         },
 821         {
 822                 .cmd = K_FW_ERASE_10_FORCE,
 823                 .cb = cb_not_support,
 824         },
 825         {
 826                 .cmd = K_FW_GET_VERSION,
 827                 .cb = cb_not_support,
 828         },
 829         {
 830                 .cmd = K_FW_LBA_READ_10,
 831                 .cb = cb_read_lba,
 832         },
 833         {
 834                 .cmd = K_FW_LBA_WRITE_10,
 835                 .cb = cb_write_lba,
 836         },
 837         {
 838                 .cmd = K_FW_ERASE_SYS_DISK,
 839                 .cb = cb_not_support,
 840         },
 841         {
 842                 .cmd = K_FW_SDRAM_READ_10,
 843                 .cb = cb_not_support,
 844         },
 845         {
 846                 .cmd = K_FW_SDRAM_WRITE_10,
 847                 .cb = cb_not_support,
 848         },
 849         {
 850                 .cmd = K_FW_SDRAM_EXECUTE,
 851                 .cb = cb_not_support,
 852         },
 853         {
 854                 .cmd = K_FW_READ_FLASH_INFO,
 855                 .cb = cb_not_support,
 856         },
 857         {
 858                 .cmd = K_FW_GET_CHIP_VER,
 859                 .cb = cb_get_chip_version,
 860         },
 861         {
 862                 .cmd = K_FW_LOW_FORMAT,
 863                 .cb = cb_not_support,
 864         },
 865         {
 866                 .cmd = K_FW_SET_RESET_FLAG,
 867                 .cb = cb_not_support,
 868         },
 869         {
 870                 .cmd = K_FW_SPI_READ_10,
 871                 .cb = cb_not_support,
 872         },
 873         {
 874                 .cmd = K_FW_SPI_WRITE_10,
 875                 .cb = cb_not_support,
 876         },
 877         {
 878                 .cmd = K_FW_LBA_ERASE_10,
 879                 .cb = cb_erase_lba,
 880         },
 881         {
 882                 .cmd = K_FW_SESSION,
 883                 .cb = cb_not_support,
 884         },
 885         {
 886                 .cmd = K_FW_RESET,
 887                 .cb = cb_reboot,
 888         },
 889 };
 890
 891 static void rx_handler_command(struct usb_ep *ep, struct usb_request *req)
 892 {
 893         void (*func_cb)(struct usb_ep *ep, struct usb_request *req) = NULL;
 894
 895         ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
 896                                  sizeof(struct fsg_bulk_cb_wrap));
 897         char *cmdbuf = req->buf;
 898         int i;
 899
 900         if (req->status || req->length == 0)
 901                 return;
 902
 903         memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
 904 #ifdef DEBUG
 905         printcbw(req->buf);
 906 #endif
 907
 908         for (i = 0; i < ARRAY_SIZE(cmd_dispatch_info); i++) {
 909                 if (cmd_dispatch_info[i].cmd == cbw->CDB[0]) {
 910                         func_cb = cmd_dispatch_info[i].cb;
 911                         break;
 912                 }
 913         }
 914
 915         if (!func_cb) {
 916                 printf("unknown command: %s\n", (char *)req->buf);
 917                 rockusb_tx_write_str("FAILunknown command");
 918         } else {
 919                 if (req->actual < req->length) {
 920                         u8 *buf = (u8 *)req->buf;
 921
 922                         buf[req->actual] = 0;
 923                         func_cb(ep, req);
 924                 } else {
 925                         puts("buffer overflow\n");
 926                         rockusb_tx_write_str("FAILbuffer overflow");
 927                 }
 928         }
 929
 930         *cmdbuf = '\0';
 931         req->actual = 0;
 932         usb_ep_queue(ep, req, 0);
 933 }