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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2017
*
* Eddie Cai <eddie.cai.linux@gmail.com>
*/
#ifndef _F_ROCKUSB_H_
#define _F_ROCKUSB_H_
#include <blk.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.
*/
#define RKUSB_BUF_SIZE EP_BUFFER_SIZE * 2
#define RKBLOCK_BUF_SIZE 4096
#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
enum rkusb_command {
K_FW_TEST_UNIT_READY = 0x00,
K_FW_READ_FLASH_ID = 0x01,
K_FW_SET_DEVICE_ID = 0x02,
K_FW_TEST_BAD_BLOCK = 0x03,
K_FW_READ_10 = 0x04,
K_FW_WRITE_10 = 0x05,
K_FW_ERASE_10 = 0x06,
K_FW_WRITE_SPARE = 0x07,
K_FW_READ_SPARE = 0x08,
K_FW_ERASE_10_FORCE = 0x0b,
K_FW_GET_VERSION = 0x0c,
K_FW_LBA_READ_10 = 0x14,
K_FW_LBA_WRITE_10 = 0x15,
K_FW_ERASE_SYS_DISK = 0x16,
K_FW_SDRAM_READ_10 = 0x17,
K_FW_SDRAM_WRITE_10 = 0x18,
K_FW_SDRAM_EXECUTE = 0x19,
K_FW_READ_FLASH_INFO = 0x1A,
K_FW_GET_CHIP_VER = 0x1B,
K_FW_LOW_FORMAT = 0x1C,
K_FW_SET_RESET_FLAG = 0x1E,
K_FW_SPI_READ_10 = 0x21,
K_FW_SPI_WRITE_10 = 0x22,
K_FW_LBA_ERASE_10 = 0x25,
K_FW_SESSION = 0X30,
K_FW_RESET = 0xff,
};
#define CBW_DIRECTION_OUT 0x00
#define CBW_DIRECTION_IN 0x80
struct cmd_dispatch_info {
enum rkusb_command cmd;
/* call back function to handle rockusb command */
void (*cb)(struct usb_ep *ep, struct usb_request *req);
};
/* Bulk-only data structures */
/* Command Block Wrapper */
struct fsg_bulk_cb_wrap {
__le32 signature; /* Contains 'USBC' */
u32 tag; /* Unique per command id */
__le32 data_transfer_length; /* 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
struct f_rockusb {
struct usb_function usb_function;
struct usb_ep *in_ep, *out_ep;
struct usb_request *in_req, *out_req;
char *dev_type;
unsigned int dev_index;
unsigned int tag;
unsigned int lba;
unsigned int dl_size;
unsigned int dl_bytes;
unsigned int ul_size;
unsigned int ul_bytes;
struct blk_desc *desc;
int reboot_flag;
void *buf;
void *buf_head;
};
/* init rockusb device, tell rockusb which device you want to read/write*/
void rockusb_dev_init(char *dev_type, int dev_index);
#endif /* _F_ROCKUSB_H_ */
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