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