2017-03-16 15:05 GMT+08:00 Kever Yang <kever.y...@rock-chips.com>:

> Hi Eddie,
>
>     I recommend you to use ums framework instead of fastboot, because
> ums have dual-buffer which improve performance.
>
I will try to add dual buffer support in next version

>
> Thanks,
> - Kever
>
> On 03/15/2017 03:56 PM, Eddie Cai wrote:
>
>> this patch implement fastboot protocol on the device side. this is based
>> on USB
>> download gadget infrastructure. the rockusb function implements the rd,
>> wl, rid
>> commands. it can work with rkdeveloptool;
>> https://github.com/rockchip-linux/rkdeveloptool
>>
>> Signed-off-by: Eddie Cai <eddie.cai.li...@gmail.com>
>> ---
>>   drivers/usb/gadget/Makefile    |   1 +
>>   drivers/usb/gadget/f_rockusb.c | 801 ++++++++++++++++++++++++++++++
>> +++++++++++
>>   2 files changed, 802 insertions(+)
>>   create mode 100644 drivers/usb/gadget/f_rockusb.c
>>
>> diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
>> index 0fbbb7c..0eb27a3 100644
>> --- a/drivers/usb/gadget/Makefile
>> +++ b/drivers/usb/gadget/Makefile
>> @@ -28,6 +28,7 @@ obj-$(CONFIG_USB_FUNCTION_THOR) += f_thor.o
>>   obj-$(CONFIG_USB_FUNCTION_DFU) += f_dfu.o
>>   obj-$(CONFIG_USB_FUNCTION_MASS_STORAGE) += f_mass_storage.o
>>   obj-$(CONFIG_USB_FUNCTION_FASTBOOT) += f_fastboot.o
>> +obj-$(CONFIG_USB_FUNCTION_ROCKUSB) += f_rockusb.o
>>   endif
>>   endif
>>   ifdef CONFIG_USB_ETHER
>> diff --git a/drivers/usb/gadget/f_rockusb.c
>> b/drivers/usb/gadget/f_rockusb.c
>> new file mode 100644
>> index 0000000..a67cb35
>> --- /dev/null
>> +++ b/drivers/usb/gadget/f_rockusb.c
>> @@ -0,0 +1,801 @@
>> +/*
>> + * (C) Copyright 2017
>> + *
>> + * Eddie Cai <eddie.cai.li...@gmail.com>
>> + *
>> + * SPDX-License-Identifier:    GPL-2.0+
>> + */
>> +
>> +#include <config.h>
>> +#include <common.h>
>> +#include <errno.h>
>> +#include <malloc.h>
>> +#include <linux/usb/ch9.h>
>> +#include <linux/usb/gadget.h>
>> +#include <linux/usb/composite.h>
>> +#include <linux/compiler.h>
>> +#include <version.h>
>> +#include <g_dnl.h>
>> +
>> +#define ROCKUSB_VERSION                "0.1"
>> +
>> +#define ROCKUSB_INTERFACE_CLASS        0xff
>> +#define ROCKUSB_INTERFACE_SUB_CLASS    0x06
>> +#define ROCKUSB_INTERFACE_PROTOCOL     0x05
>> +
>> +#define RX_ENDPOINT_MAXIMUM_PACKET_SIZE_2_0  (0x0200)
>> +#define RX_ENDPOINT_MAXIMUM_PACKET_SIZE_1_1  (0x0040)
>> +#define TX_ENDPOINT_MAXIMUM_PACKET_SIZE      (0x0040)
>> +
>> +#define EP_BUFFER_SIZE                 4096
>> +/*
>> + * EP_BUFFER_SIZE must always be an integral multiple of maxpacket size
>> + * (64 or 512 or 1024), else we break on certain controllers like DWC3
>> + * that expect bulk OUT requests to be divisible by maxpacket size.
>> + */
>> +
>> +struct f_rockusb {
>> +       struct usb_function usb_function;
>> +
>> +       /* IN/OUT EP's and corresponding requests */
>> +       struct usb_ep *in_ep, *out_ep;
>> +       struct usb_request *in_req, *out_req;
>> +};
>> +
>> +static inline struct f_rockusb *func_to_rockusb(struct usb_function *f)
>> +{
>> +       return container_of(f, struct f_rockusb, usb_function);
>> +}
>> +
>> +static struct f_rockusb *rockusb_func;
>> +
>> +static struct usb_endpoint_descriptor fs_ep_in = {
>> +       .bLength            = USB_DT_ENDPOINT_SIZE,
>> +       .bDescriptorType    = USB_DT_ENDPOINT,
>> +       .bEndpointAddress   = USB_DIR_IN,
>> +       .bmAttributes       = USB_ENDPOINT_XFER_BULK,
>> +       .wMaxPacketSize     = cpu_to_le16(64),
>> +};
>> +
>> +static struct usb_endpoint_descriptor fs_ep_out = {
>> +       .bLength                = USB_DT_ENDPOINT_SIZE,
>> +       .bDescriptorType        = USB_DT_ENDPOINT,
>> +       .bEndpointAddress       = USB_DIR_OUT,
>> +       .bmAttributes           = USB_ENDPOINT_XFER_BULK,
>> +       .wMaxPacketSize         = cpu_to_le16(64),
>> +};
>> +
>> +static struct usb_endpoint_descriptor hs_ep_in = {
>> +       .bLength                = USB_DT_ENDPOINT_SIZE,
>> +       .bDescriptorType        = USB_DT_ENDPOINT,
>> +       .bEndpointAddress       = USB_DIR_IN,
>> +       .bmAttributes           = USB_ENDPOINT_XFER_BULK,
>> +       .wMaxPacketSize         = cpu_to_le16(512),
>> +};
>> +
>> +static struct usb_endpoint_descriptor hs_ep_out = {
>> +       .bLength                = USB_DT_ENDPOINT_SIZE,
>> +       .bDescriptorType        = USB_DT_ENDPOINT,
>> +       .bEndpointAddress       = USB_DIR_OUT,
>> +       .bmAttributes           = USB_ENDPOINT_XFER_BULK,
>> +       .wMaxPacketSize         = cpu_to_le16(512),
>> +};
>> +
>> +static struct usb_interface_descriptor interface_desc = {
>> +       .bLength                = USB_DT_INTERFACE_SIZE,
>> +       .bDescriptorType        = USB_DT_INTERFACE,
>> +       .bInterfaceNumber       = 0x00,
>> +       .bAlternateSetting      = 0x00,
>> +       .bNumEndpoints          = 0x02,
>> +       .bInterfaceClass        = ROCKUSB_INTERFACE_CLASS,
>> +       .bInterfaceSubClass     = ROCKUSB_INTERFACE_SUB_CLASS,
>> +       .bInterfaceProtocol     = ROCKUSB_INTERFACE_PROTOCOL,
>> +};
>> +
>> +static struct usb_descriptor_header *rkusb_fs_function[] = {
>> +       (struct usb_descriptor_header *)&interface_desc,
>> +       (struct usb_descriptor_header *)&fs_ep_in,
>> +       (struct usb_descriptor_header *)&fs_ep_out,
>> +};
>> +
>> +static struct usb_descriptor_header *rkusb_hs_function[] = {
>> +       (struct usb_descriptor_header *)&interface_desc,
>> +       (struct usb_descriptor_header *)&hs_ep_in,
>> +       (struct usb_descriptor_header *)&hs_ep_out,
>> +       NULL,
>> +};
>> +
>> +static struct usb_endpoint_descriptor *
>> +rkusb_ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *fs,
>> +           struct usb_endpoint_descriptor *hs)
>> +{
>> +       if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
>> +               return hs;
>> +       return fs;
>> +}
>> +
>> +/*
>> + * static strings, in UTF-8
>> + */
>> +static const char rkusb_name[] = "Rockchip Rockusb";
>> +
>> +static struct usb_string rkusb_string_defs[] = {
>> +       [0].s = rkusb_name,
>> +       {  }                    /* end of list */
>> +};
>> +
>> +static struct usb_gadget_strings stringtab_rkusb = {
>> +       .language       = 0x0409,       /* en-us */
>> +       .strings        = rkusb_string_defs,
>> +};
>> +
>> +static struct usb_gadget_strings *rkusb_strings[] = {
>> +       &stringtab_rkusb,
>> +       NULL,
>> +};
>> +
>> +static void rx_handler_command(struct usb_ep *ep, struct usb_request
>> *req);
>> +static int rockusb_tx_write_csw(u32 Tag, int residue, u8 Status, int
>> size);
>> +
>> +static void rockusb_complete(struct usb_ep *ep, struct usb_request *req)
>> +{
>> +       int status = req->status;
>> +       if (!status)
>> +               return;
>> +       debug("status: %d ep '%s' trans: %d\n", status, ep->name,
>> req->actual);
>> +}
>> +
>> +static int rockusb_bind(struct usb_configuration *c, struct usb_function
>> *f)
>> +{
>> +       int id;
>> +       struct usb_gadget *gadget = c->cdev->gadget;
>> +       struct f_rockusb *f_rkusb = func_to_rockusb(f);
>> +       const char *s;
>> +
>> +       id = usb_interface_id(c, f);
>> +       if (id < 0)
>> +               return id;
>> +       interface_desc.bInterfaceNumber = id;
>> +
>> +       id = usb_string_id(c->cdev);
>> +       if (id < 0)
>> +               return id;
>> +
>> +       rkusb_string_defs[0].id = id;
>> +       interface_desc.iInterface = id;
>> +
>> +       f_rkusb->in_ep = usb_ep_autoconfig(gadget, &fs_ep_in);
>> +       if (!f_rkusb->in_ep)
>> +               return -ENODEV;
>> +       f_rkusb->in_ep->driver_data = c->cdev;
>> +
>> +       f_rkusb->out_ep = usb_ep_autoconfig(gadget, &fs_ep_out);
>> +       if (!f_rkusb->out_ep)
>> +               return -ENODEV;
>> +       f_rkusb->out_ep->driver_data = c->cdev;
>> +
>> +       f->descriptors = rkusb_fs_function;
>> +
>> +       if (gadget_is_dualspeed(gadget)) {
>> +               hs_ep_in.bEndpointAddress = fs_ep_in.bEndpointAddress;
>> +               hs_ep_out.bEndpointAddress = fs_ep_out.bEndpointAddress;
>> +               f->hs_descriptors = rkusb_hs_function;
>> +       }
>> +
>> +       s = getenv("serial#");
>> +       if (s)
>> +               g_dnl_set_serialnumber((char *)s);
>> +
>> +       return 0;
>> +}
>> +
>> +static void rockusb_unbind(struct usb_configuration *c, struct
>> usb_function *f)
>> +{
>> +       memset(rockusb_func, 0, sizeof(*rockusb_func));
>> +}
>> +
>> +static void rockusb_disable(struct usb_function *f)
>> +{
>> +       struct f_rockusb *f_rkusb = func_to_rockusb(f);
>> +
>> +       usb_ep_disable(f_rkusb->out_ep);
>> +       usb_ep_disable(f_rkusb->in_ep);
>> +
>> +       if (f_rkusb->out_req) {
>> +               free(f_rkusb->out_req->buf);
>> +               usb_ep_free_request(f_rkusb->out_ep, f_rkusb->out_req);
>> +               f_rkusb->out_req = NULL;
>> +       }
>> +       if (f_rkusb->in_req) {
>> +               free(f_rkusb->in_req->buf);
>> +               usb_ep_free_request(f_rkusb->in_ep, f_rkusb->in_req);
>> +               f_rkusb->in_req = NULL;
>> +       }
>> +}
>> +
>> +static struct usb_request *rockusb_start_ep(struct usb_ep *ep)
>> +{
>> +       struct usb_request *req;
>> +
>> +       req = usb_ep_alloc_request(ep, 0);
>> +       if (!req)
>> +               return NULL;
>> +
>> +       req->length = EP_BUFFER_SIZE;
>> +       req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE, EP_BUFFER_SIZE);
>> +       if (!req->buf) {
>> +               usb_ep_free_request(ep, req);
>> +               return NULL;
>> +       }
>> +
>> +       memset(req->buf, 0, req->length);
>> +       return req;
>> +}
>> +
>> +static int rockusb_set_alt(struct usb_function *f,
>> +                           unsigned interface, unsigned alt)
>> +{
>> +       int ret;
>> +       struct usb_composite_dev *cdev = f->config->cdev;
>> +       struct usb_gadget *gadget = cdev->gadget;
>> +       struct f_rockusb *f_rkusb = func_to_rockusb(f);
>> +       const struct usb_endpoint_descriptor *d;
>> +
>> +       debug("%s: func: %s intf: %d alt: %d\n",
>> +             __func__, f->name, interface, alt);
>> +
>> +       d = rkusb_ep_desc(gadget, &fs_ep_out, &hs_ep_out);
>> +       ret = usb_ep_enable(f_rkusb->out_ep, d);
>> +       if (ret) {
>> +               puts("failed to enable out ep\n");
>> +               return ret;
>> +       }
>> +
>> +       f_rkusb->out_req = rockusb_start_ep(f_rkusb->out_ep);
>> +       if (!f_rkusb->out_req) {
>> +               puts("failed to alloc out req\n");
>> +               ret = -EINVAL;
>> +               goto err;
>> +       }
>> +       f_rkusb->out_req->complete = rx_handler_command;
>> +
>> +       d = rkusb_ep_desc(gadget, &fs_ep_in, &hs_ep_in);
>> +       ret = usb_ep_enable(f_rkusb->in_ep, d);
>> +       if (ret) {
>> +               puts("failed to enable in ep\n");
>> +               goto err;
>> +       }
>> +
>> +       f_rkusb->in_req = rockusb_start_ep(f_rkusb->in_ep);
>> +       if (!f_rkusb->in_req) {
>> +               puts("failed alloc req in\n");
>> +               ret = -EINVAL;
>> +               goto err;
>> +       }
>> +       f_rkusb->in_req->complete = rockusb_complete;
>> +
>> +       ret = usb_ep_queue(f_rkusb->out_ep, f_rkusb->out_req, 0);
>> +       if (ret)
>> +               goto err;
>> +
>> +       return 0;
>> +err:
>> +       rockusb_disable(f);
>> +       return ret;
>> +}
>> +
>> +static int rockusb_add(struct usb_configuration *c)
>> +{
>> +       struct f_rockusb *f_rkusb = rockusb_func;
>> +       int status;
>> +
>> +       debug("%s: cdev: 0x%p\n", __func__, c->cdev);
>> +
>> +       if (!f_rkusb) {
>> +               f_rkusb = memalign(CONFIG_SYS_CACHELINE_SIZE,
>> sizeof(*f_rkusb));
>> +               if (!f_rkusb)
>> +                       return -ENOMEM;
>> +
>> +               rockusb_func = f_rkusb;
>> +               memset(f_rkusb, 0, sizeof(*f_rkusb));
>> +       }
>> +
>> +       f_rkusb->usb_function.name = "f_rockusb";
>> +       f_rkusb->usb_function.bind = rockusb_bind;
>> +       f_rkusb->usb_function.unbind = rockusb_unbind;
>> +       f_rkusb->usb_function.set_alt = rockusb_set_alt;
>> +       f_rkusb->usb_function.disable = rockusb_disable;
>> +       f_rkusb->usb_function.strings = rkusb_strings;
>> +
>> +       status = usb_add_function(c, &f_rkusb->usb_function);
>> +       if (status) {
>> +               free(f_rkusb);
>> +               rockusb_func = f_rkusb;
>> +       }
>> +       return status;
>> +}
>> +
>> +char *rockusb_dev_type = 0;
>> +int rockusb_dev_index = 0;
>> +
>> +void rockusb_dev_init(char *dev_type, int dev_index)
>> +{
>> +       rockusb_dev_type = dev_type;
>> +       rockusb_dev_index = dev_index;
>> +}
>> +
>> +DECLARE_GADGET_BIND_CALLBACK(usb_dnl_rockusb, rockusb_add);
>> +
>> +static int rockusb_tx_write(const char *buffer, unsigned int buffer_size)
>> +{
>> +       struct usb_request *in_req = rockusb_func->in_req;
>> +       int ret;
>> +
>> +       memcpy(in_req->buf, buffer, buffer_size);
>> +       in_req->length = buffer_size;
>> +       usb_ep_dequeue(rockusb_func->in_ep, in_req);
>> +       ret = usb_ep_queue(rockusb_func->in_ep, in_req, 0);
>> +       if (ret)
>> +               printf("Error %d on queue\n", ret);
>> +       return 0;
>> +}
>> +
>> +static int rockusb_tx_write_str(const char *buffer)
>> +{
>> +       return rockusb_tx_write(buffer, strlen(buffer));
>> +}
>> +
>> +/* Bulk-only data structures */
>> +
>> +/* Command Block Wrapper */
>> +struct fsg_bulk_cb_wrap {
>> +       __le32  Signature;              /* Contains 'USBC' */
>> +       u32     Tag;                    /* Unique per command id */
>> +       __le32  DataTransferLength;     /* Size of the data */
>> +       u8      Flags;                  /* Direction in bit 7 */
>> +       u8      Lun;                    /* LUN (normally 0) */
>> +       u8      Length;                 /* Of the CDB, <=
>> MAX_COMMAND_SIZE */
>> +       u8      CDB[16];                /* Command Data Block */
>> +};
>> +
>> +#define USB_BULK_CB_WRAP_LEN   31
>> +#define USB_BULK_CB_SIG                0x43425355      /* Spells out
>> USBC */
>> +#define USB_BULK_IN_FLAG       0x80
>> +
>> +/* Command Status Wrapper */
>> +struct bulk_cs_wrap {
>> +       __le32  Signature;              /* Should = 'USBS' */
>> +       u32     Tag;                    /* Same as original command */
>> +       __le32  Residue;                /* Amount not transferred */
>> +       u8      Status;                 /* See below */
>> +};
>> +
>> +#define USB_BULK_CS_WRAP_LEN   13
>> +#define USB_BULK_CS_SIG                0x53425355      /* Spells out
>> 'USBS' */
>> +#define USB_STATUS_PASS                0
>> +#define USB_STATUS_FAIL                1
>> +#define USB_STATUS_PHASE_ERROR 2
>> +
>> +
>> +#define        CSW_GOOD                0x00
>> +#define        CSW_FAIL                0x01
>> +
>> +static void printcbw(char *buf)
>> +{
>> +       struct fsg_bulk_cb_wrap cbw __attribute__((aligned(ARCH_DM
>> A_MINALIGN)));
>> +
>> +       memcpy((char*)&cbw, buf, USB_BULK_CB_WRAP_LEN);
>> +
>> +       debug("cbw: Signature:%x\n", cbw.Signature);
>> +       debug("cbw: Tag=%x\n", cbw.Tag);
>> +       debug("cbw: DataTransferLength=%d\n", cbw.DataTransferLength);
>> +       debug("cbw: Flags=%x\n", cbw.Flags);
>> +       debug("cbw: Lun=%d\n", cbw.Lun);
>> +       debug("cbw: Length=%d\n", cbw.Length);
>> +       debug("cbw: ucOperCode=%x\n", cbw.CDB[0]);
>> +       debug("cbw: ucReserved=%x\n", cbw.CDB[1]);
>> +       debug("cbw: dwAddress:%x %x %x %x\n", cbw.CDB[5], cbw.CDB[4],
>> +                                               cbw.CDB[3], cbw.CDB[2]);
>> +       debug("cbw: ucReserved2=%x\n", cbw.CDB[6]);
>> +       debug("cbw: usLength:%x %x\n", cbw.CDB[8], cbw.CDB[7]);
>> +
>> +}
>> +
>> +static void printcsw(char *buf)
>> +{
>> +       struct bulk_cs_wrap csw __attribute__((aligned(ARCH_DM
>> A_MINALIGN)));
>> +
>> +       memcpy((char*)&csw, buf, USB_BULK_CS_WRAP_LEN);
>> +       debug("csw: Signature:%x\n", csw.Signature);
>> +       debug("csw: Tag:%x\n", csw.Tag);
>> +       debug("csw: Residue:%x\n", csw.Residue);
>> +       debug("csw: Status:%x\n", csw.Status);
>> +
>> +}
>> +
>> +static int rockusb_tx_write_csw(u32 Tag, int residue, u8 Status, int
>> size)
>> +{
>> +       struct bulk_cs_wrap csw __attribute__((aligned(ARCH_DM
>> A_MINALIGN)));
>> +       csw.Signature = cpu_to_le32(USB_BULK_CS_SIG);
>> +       csw.Tag = Tag;
>> +       csw.Residue = cpu_to_be32(residue);
>> +       csw.Status = Status;
>> +       printcsw((char*)&csw);
>> +       return rockusb_tx_write((char*)&csw, size);
>> +}
>> +
>> +int download_tag = 0;
>> +int download_lba = 0;
>> +static unsigned int download_size;
>> +static unsigned int download_bytes;
>> +struct blk_desc *download_desc = 0;
>> +
>> +static unsigned int rx_bytes_expected(struct usb_ep *ep)
>> +{
>> +       int rx_remain = download_size - download_bytes;
>> +       unsigned int rem;
>> +       unsigned int maxpacket = ep->maxpacket;
>> +
>> +       if (rx_remain <= 0)
>> +               return 0;
>> +       else if (rx_remain > EP_BUFFER_SIZE)
>> +               return EP_BUFFER_SIZE;
>> +
>> +       rem = rx_remain % maxpacket;
>> +       if (rem > 0)
>> +               rx_remain = rx_remain + (maxpacket - rem);
>> +
>> +       return rx_remain;
>> +}
>> +
>> +static void rx_handler_dl_image(struct usb_ep *ep, struct usb_request
>> *req)
>> +{
>> +       unsigned int transfer_size = download_size - download_bytes;
>> +       const unsigned char *buffer = req->buf;
>> +       unsigned int buffer_size = req->actual;
>> +
>> +       if(!download_desc){
>> +               printf("rx_handler_dl_image blk_get_dev\n");
>> +               download_desc = blk_get_dev(rockusb_dev_type,
>> rockusb_dev_index);
>> +               if (!download_desc || download_desc->type ==
>> DEV_TYPE_UNKNOWN){
>> +                       error("invalid mmc device\n");
>> +                       rockusb_tx_write_csw(download_tag, 0, CSW_FAIL,
>> +                                               USB_BULK_CS_WRAP_LEN);
>> +                       return;
>> +               }
>> +       }
>> +
>> +       if (req->status != 0) {
>> +               printf("Bad status: %d\n", req->status);
>> +               rockusb_tx_write_csw(download_tag, 0,
>> +                                       CSW_FAIL, USB_BULK_CS_WRAP_LEN);
>> +               return;
>> +       }
>> +
>> +       if (buffer_size < transfer_size)
>> +               transfer_size = buffer_size;
>> +
>> +       memcpy((void *)CONFIG_FASTBOOT_BUF_ADDR + download_bytes,
>> +              buffer, transfer_size);
>> +       download_bytes += transfer_size;
>> +
>> +       /* Check if transfer is done */
>> +       if (download_bytes >= download_size) {
>> +               int blks = 0, blkcnt = download_size/512;
>> +               printf("download %d bytes finished, start writing to lba
>> %x\n",
>> +                                download_bytes, download_lba);
>> +               blks = blk_dwrite(download_desc, download_lba, blkcnt,
>> +                                       (char*)CONFIG_FASTBOOT_BUF_ADDR);
>> +               if (blks != blkcnt) {
>> +                       error("failed writing to device %s: %d\n",
>> +                               rockusb_dev_type, rockusb_dev_index);
>> +                       rockusb_tx_write_csw(download_tag, 0,
>> +                                               CSW_FAIL,
>> USB_BULK_CS_WRAP_LEN);
>> +                       return;
>> +               }
>> +
>> +               req->complete = rx_handler_command;
>> +               req->length = EP_BUFFER_SIZE;
>> +               download_size = 0;
>> +               printf("done\n");
>> +               rockusb_tx_write_csw(download_tag, 0, CSW_GOOD,
>> +                                       USB_BULK_CS_WRAP_LEN);
>> +       } else {
>> +               req->length = rx_bytes_expected(ep);
>> +       }
>> +
>> +       req->actual = 0;
>> +       usb_ep_queue(ep, req, 0);
>> +}
>> +
>> +static void cb_test_unit_ready(struct usb_ep *ep, struct usb_request
>> *req)
>> +{
>> +       struct fsg_bulk_cb_wrap cbw __attribute__((aligned(ARCH_DM
>> A_MINALIGN)));
>> +
>> +       memcpy((char*)&cbw, req->buf, USB_BULK_CB_WRAP_LEN);
>> +
>> +       rockusb_tx_write_csw(cbw.Tag, cbw.DataTransferLength,
>> +                               CSW_GOOD, USB_BULK_CS_WRAP_LEN);
>> +
>> +}
>> +
>> +static void cb_read_storage_id(struct usb_ep *ep, struct usb_request
>> *req)
>> +{
>> +       struct fsg_bulk_cb_wrap cbw __attribute__((aligned(ARCH_DM
>> A_MINALIGN)));
>> +       char emmc_id[] = "EMMC ";
>> +
>> +       printf("cb_read_storage_id\n");
>> +       memcpy((char*)&cbw, req->buf, USB_BULK_CB_WRAP_LEN);
>> +       rockusb_tx_write_str(emmc_id);//only support emmc now
>> +       rockusb_tx_write_csw(cbw.Tag, cbw.DataTransferLength, CSW_GOOD,
>> +                               USB_BULK_CS_WRAP_LEN);
>> +}
>> +
>> +static void cb_write_lba(struct usb_ep *ep, struct usb_request *req)
>> +{
>> +       struct fsg_bulk_cb_wrap cbw __attribute__((aligned(ARCH_DM
>> A_MINALIGN)));
>> +       int sector_count;
>> +
>> +       memcpy((char*)&cbw, req->buf, USB_BULK_CB_WRAP_LEN);
>> +       sector_count = (int)get_unaligned_be16(&cbw.CDB[7]);
>> +       download_lba = get_unaligned_be32(&cbw.CDB[2]);
>> +       download_size = sector_count * 512;
>> +       download_bytes = 0;
>> +       download_tag = cbw.Tag;
>> +       if ((0 == download_size) || (download_size>CONFIG_FASTBOOT
>> _BUF_SIZE)){
>> +               rockusb_tx_write_csw(cbw.Tag, cbw.DataTransferLength,
>> +                                       CSW_FAIL, USB_BULK_CS_WRAP_LEN);
>> +       } else {
>> +               req->complete = rx_handler_dl_image;
>> +               req->length = rx_bytes_expected(ep);
>> +       }
>> +}
>> +
>> +static int reboot_flag;
>> +
>> +int __weak rkusb_set_reboot_flag(int flag)
>> +{
>> +       printf("rkusb_set_reboot_flag: %d\n", reboot_flag);
>> +       return -ENOSYS;
>> +}
>> +
>> +static void compl_do_reset(struct usb_ep *ep, struct usb_request *req)
>> +{
>> +       rkusb_set_reboot_flag(reboot_flag);
>> +       do_reset(NULL, 0, 0, NULL);
>> +}
>> +
>> +static void cb_reboot(struct usb_ep *ep, struct usb_request *req)
>> +{
>> +       struct fsg_bulk_cb_wrap cbw __attribute__((aligned(ARCH_DM
>> A_MINALIGN)));
>> +       reboot_flag = 0;
>> +       memcpy((char*)&cbw, req->buf, USB_BULK_CB_WRAP_LEN);
>> +       reboot_flag = cbw.CDB[1];
>> +       rockusb_func->in_req->complete = compl_do_reset;
>> +       rockusb_tx_write_csw(cbw.Tag, cbw.DataTransferLength, CSW_GOOD,
>> +                               USB_BULK_CS_WRAP_LEN);
>> +}
>> +
>> +static void cb_not_support(struct usb_ep *ep, struct usb_request *req)
>> +{
>> +       struct fsg_bulk_cb_wrap cbw __attribute__((aligned(ARCH_DM
>> A_MINALIGN)));
>> +
>> +       memcpy((char*)&cbw, req->buf, USB_BULK_CB_WRAP_LEN);
>> +       printf("Rockusb command %x not support yet\n", cbw.CDB[0]);
>> +       rockusb_tx_write_csw(cbw.Tag, 0, CSW_FAIL, USB_BULK_CS_WRAP_LEN);
>> +}
>> +
>> +#define RKUSB_STATUS_IDLE                      0
>> +#define RKUSB_STATUS_CMD                       1
>> +#define RKUSB_STATUS_RXDATA                    2
>> +#define RKUSB_STATUS_TXDATA                    3
>> +#define RKUSB_STATUS_CSW                       4
>> +#define RKUSB_STATUS_RXDATA_PREPARE            5
>> +#define RKUSB_STATUS_TXDATA_PREPARE            6
>> +
>> +typedef enum {
>> +               TEST_UNIT_READY = 0,
>> +               READ_FLASH_ID = 0x01,
>> +               TEST_BAD_BLOCK = 0x03,
>> +               READ_SECTOR = 0x04,
>> +               WRITE_SECTOR = 0x05,
>> +               ERASE_NORMAL = 0x06,
>> +               ERASE_FORCE = 0x0B,
>> +               READ_LBA = 0x14,
>> +               WRITE_LBA = 0x15,
>> +               ERASE_SYSTEMDISK = 0x16,
>> +               READ_SDRAM = 0x17,
>> +               WRITE_SDRAM = 0x18,
>> +               EXECUTE_SDRAM = 0x19,
>> +               READ_FLASH_INFO = 0x1A,
>> +               READ_CHIP_INFO = 0x1B,
>> +               SET_RESET_FLAG = 0x1E,
>> +               WRITE_EFUSE = 0x1F,
>> +               READ_EFUSE = 0x20,
>> +               READ_SPI_FLASH = 0x21,
>> +               WRITE_SPI_FLASH = 0x22,
>> +               WRITE_NEW_EFUSE = 0x23,
>> +               READ_NEW_EFUSE = 0x24,
>> +               DEVICE_RESET = 0xFF
>> +} USB_OPERATION_CODE;
>> +
>> +#define        K_FW_TEST_UNIT_READY    0x00
>> +#define        K_FW_READ_FLASH_ID              0x01
>> +#define        K_FW_SET_DEVICE_ID              0x02
>> +#define        K_FW_TEST_BAD_BLOCK             0x03
>> +#define        K_FW_READ_10                    0x04
>> +#define        K_FW_WRITE_10                   0x05
>> +#define        K_FW_ERASE_10                   0x06
>> +#define        K_FW_WRITE_SPARE                0x07
>> +#define        K_FW_READ_SPARE                 0x08
>> +
>> +#define        K_FW_ERASE_10_FORCE             0x0b
>> +#define        K_FW_GET_VERSION                0x0c
>> +
>> +#define        K_FW_LBA_READ_10                0x14
>> +#define        K_FW_LBA_WRITE_10               0x15
>> +#define        K_FW_ERASE_SYS_DISK             0x16
>> +#define        K_FW_SDRAM_READ_10              0x17
>> +#define        K_FW_SDRAM_WRITE_10             0x18
>> +#define        K_FW_SDRAM_EXECUTE              0x19
>> +#define        K_FW_READ_FLASH_INFO            0x1A
>> +#define        K_FW_GET_CHIP_VER               0x1B
>> +#define        K_FW_LOW_FORMAT                 0x1C
>> +#define        K_FW_SET_RESET_FLAG             0x1E
>> +#define        K_FW_SPI_READ_10                0x21
>> +#define        K_FW_SPI_WRITE_10               0x22
>> +
>> +#define        K_FW_SESSION                    0X30
>> +#define        K_FW_RESET                      0xff
>> +
>> +#define CBW_DIRECTION_OUT              0x00
>> +#define CBW_DIRECTION_IN               0x80
>> +
>> +struct cmd_dispatch_info {
>> +       int cmd;
>> +       void (*cb)(struct usb_ep *ep, struct usb_request *req);
>> +};
>> +
>> +static const struct cmd_dispatch_info cmd_dispatch_info[] = {
>> +       {
>> +               .cmd = K_FW_TEST_UNIT_READY,
>> +               .cb = cb_test_unit_ready,
>> +       },
>> +       {
>> +               .cmd = K_FW_READ_FLASH_ID,
>> +               .cb = cb_read_storage_id,
>> +       },
>> +       {
>> +               .cmd = K_FW_SET_DEVICE_ID,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_TEST_BAD_BLOCK,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_READ_10,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_WRITE_10,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_ERASE_10,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_WRITE_SPARE,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_READ_SPARE,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_ERASE_10_FORCE,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_GET_VERSION,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_LBA_READ_10,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_LBA_WRITE_10,
>> +               .cb = cb_write_lba,
>> +       },
>> +       {
>> +               .cmd = K_FW_ERASE_SYS_DISK,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_SDRAM_READ_10,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_SDRAM_WRITE_10,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_SDRAM_EXECUTE,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_READ_FLASH_INFO,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_GET_CHIP_VER,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_LOW_FORMAT,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_SET_RESET_FLAG,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_SPI_READ_10,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_SPI_WRITE_10,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_SESSION,
>> +               .cb = cb_not_support,
>> +       },
>> +       {
>> +               .cmd = K_FW_RESET,
>> +               .cb = cb_reboot,
>> +       },
>> +};
>> +
>> +
>> +
>> +static void rx_handler_command(struct usb_ep *ep, struct usb_request
>> *req)
>> +{
>> +       void (*func_cb)(struct usb_ep *ep, struct usb_request *req) =
>> NULL;
>> +       struct fsg_bulk_cb_wrap cbw __attribute__((aligned(ARCH_DM
>> A_MINALIGN)));
>> +       int i;
>> +       char *cmdbuf = req->buf;
>> +
>> +       if (req->status != 0 || req->length == 0)
>> +               return;
>> +
>> +       memcpy((char*)&cbw, req->buf, USB_BULK_CB_WRAP_LEN);
>> +       printcbw(req->buf);
>> +
>> +       for (i = 0; i < ARRAY_SIZE(cmd_dispatch_info); i++) {
>> +               if (cmd_dispatch_info[i].cmd == cbw.CDB[0]) {
>> +                       func_cb = cmd_dispatch_info[i].cb;
>> +                       break;
>> +               }
>> +       }
>> +
>> +       if (!func_cb) {
>> +               error("unknown command: %s", (char*)req->buf);
>> +               rockusb_tx_write_str("FAILunknown command");
>> +       } else {
>> +               if (req->actual < req->length) {
>> +                       u8 *buf = (u8 *)req->buf;
>> +                       buf[req->actual] = 0;
>> +                       func_cb(ep, req);
>> +               } else {
>> +                       error("buffer overflow");
>> +                       rockusb_tx_write_str("FAILbuffer overflow");
>> +               }
>> +       }
>> +
>> +       *cmdbuf = '\0';
>> +       req->actual = 0;
>> +       usb_ep_queue(ep, req, 0);
>> +}
>>
>
>
>
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