drivers/usb/gadget/aml_tiny_usbtool/dwc_pcd.h

/*
 * drivers/usb/gadget/aml_tiny_usbtool/dwc_pcd.h
 *
 * Copyright (C) 2015 Amlogic, Inc. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

#ifndef __DWC_PCD_H__
#define __DWC_PCD_H__

//#define USE_FULL_SPEED

#define NUM_EP	4

#define BULK_IN_EP_NUM		1
#define BULK_OUT_EP_NUM	2

#ifdef USE_FULL_SPEED
#define BULK_EP_MPS	(64)		//only for full speed
#else
#define BULK_EP_MPS (512)
#endif

#define DWC_REG_GOTGCTL	0x000 /** OTG Control and Status Register.  <i>Offset: 000h</i> */
#define DWC_REG_GOTGINT	0x004 /** OTG Interrupt Register.	 <i>Offset: 004h</i> */
#define DWC_REG_GAHBCFG	0x008 /**Core AHB Configuration Register.	 <i>Offset: 008h</i> */
#define DWC_REG_GUSBCFG	0x00C /**Core USB Configuration Register.	 <i>Offset: 00Ch</i> */
#define DWC_REG_GRSTCTL	0x010 /**Core Reset Register.	 <i>Offset: 010h</i> */
#define DWC_REG_GINTSTS	0x014 /**Core Interrupt Register.	 <i>Offset: 014h</i> */
#define DWC_REG_GINTMSK	0x018 /**Core Interrupt Mask Register.  <i>Offset: 018h</i> */
#define DWC_REG_GRXSTSR	0x01C /**Receive Status Queue Read Register (Read Only).	<i>Offset: 01Ch</i> */
#define DWC_REG_GRXSTSP	0x020 /**Receive Status Queue Read & POP Register (Read Only).  <i>Offset: 020h</i>*/
#define DWC_REG_GRXFSIZ	0x024 /**Receive FIFO Size Register.	<i>Offset: 024h</i> */
#define DWC_REG_GNPTXFSIZ	0x028 /**Non Periodic Transmit FIFO Size Register.  <i>Offset: 028h</i> */
#define DWC_REG_GNPTXSTS	0x02C /**Non Periodic Transmit FIFO/Queue Status Register (Read  * Only). <i>Offset: 02Ch</i> */
#define DWC_REG_GI2CCTL	0x030 /**I2C Access Register.	 <i>Offset: 030h</i> */
#define DWC_REG_GPVNDCTL	0x034 /**PHY Vendor Control Register.	 <i>Offset: 034h</i> */
#define DWC_REG_GGPIO		0x038 /**General Purpose Input/Output Register.  <i>Offset: 038h</i> */
#define DWC_REG_GUID		0x03C /**User ID Register.  <i>Offset: 03Ch</i> */
#define DWC_REG_GSNPSID	0x040 /**Synopsys ID Register (Read Only).  <i>Offset: 040h</i> */
#define DWC_REG_GHWCFG1	0x044 /**User HW Config1 Register (Read Only).  <i>Offset: 044h</i> */
#define DWC_REG_GHWCFG2	0x048 /**User HW Config2 Register (Read Only).  <i>Offset: 048h</i> */
#define DWC_REG_GHWCFG3	0x04C /**User HW Config3 Register (Read Only).  <i>Offset: 04Ch</i> */
#define DWC_REG_GHWCFG4	0x050 /**User HW Config4 Register (Read Only).  <i>Offset: 050h</i>*/
#define DWC_REG_HPTXFSIZ	0x100 /** Host Periodic Transmit FIFO Size Register. <i>Offset: 100h</i> */

/** Device Periodic Transmit FIFO#n Register if dedicated fifos are disabled,
		otherwise Device Transmit FIFO#n Register.
	 * <i>Offset: 104h + (FIFO_Number-1)*04h, 1 <= FIFO Number <= 15 (1<=n<=15).</i> */
#define DWC_REG_DPTXFSIZ_DIEPTXF		0x104

#define DWC_REG_DCFG	0x800 /** Device Configuration Register. <i>Offset 800h</i> */
#define DWC_REG_DCTL	0x804 /** Device Control Register. <i>Offset: 804h</i> */
#define DWC_REG_DSTS	0x808 /** Device Status Register (Read Only). <i>Offset: 808h</i> */
#define DWC_REG_DIEPMSK	0x810 /** Device IN Endpoint Common Interrupt Mask Register. <i>Offset: 810h</i> */
#define DWC_REG_DOEPMSK	0x814 /** Device OUT Endpoint Common Interrupt Mask Register. <i>Offset: 814h</i> */
#define DWC_REG_DAINT	0x818 /** Device All Endpoints Interrupt Register.  <i>Offset: 818h</i> */
#define DWC_REG_DAINTMSK	0x81C /** Device All Endpoints Interrupt Mask Register.  <i>Offset: 81Ch</i> */
#define DWC_REG_DTKNQR1	0x820 /** Device IN Token Queue Read Register-1 (Read Only). <i>Offset: 820h</i> */
#define DWC_REG_DTKNQR2	0x824 /** Device IN Token Queue Read Register-2 (Read Only). <i>Offset: 824h</i> */
#define DWC_REG_DVBUGDIS	0x828 /** Device VBUS	 discharge Register.  <i>Offset: 828h</i> */
#define DWC_REG_DVBUSPULSE	0x82C /** Device VBUS Pulse Register.	 <i>Offset: 82Ch</i> */
#define DWC_REG_DTKNQR3	0x830
	/** Device IN Token Queue Read Register-3 (Read Only). /
	 *	Device Thresholding control register (Read/Write)
	 * <i>Offset: 830h</i> */
#define DWC_REG_DTKNQR4	0x834
	/** Device IN Token Queue Read Register-4 (Read Only). /
	 *	Device IN EPs empty Inr. Mask Register (Read/Write)
	 * <i>Offset: 834h</i> */
#define DWC_REG_PCGCCTL	0xE00 /** Power and Clock Gating Control Register */

#define DWC_EP_REGS_OFFSET	0x00
#define DWC_EP_INTR_OFFSET	0x08
#define DWC_EP_TSIZE_OFFSET	0x10
#define DWC_EP_DMA_OFFSET		0x14

#define DWC_IN_EP_REG_START 0x900
#define DWC_OUT_EP_REG_START 0xB00

#define DWC_REG_IN_EP_REG(x)	(DWC_IN_EP_REG_START + x*0x20 + DWC_EP_REGS_OFFSET)
#define DWC_REG_IN_EP_INTR(x)	(DWC_IN_EP_REG_START + x*0x20 + DWC_EP_INTR_OFFSET)
#define DWC_REG_IN_EP_TSIZE(x)	(DWC_IN_EP_REG_START + x*0x20 + DWC_EP_TSIZE_OFFSET)
#define DWC_REG_IN_EP_DMA(x)	(DWC_IN_EP_REG_START + x*0x20 + DWC_EP_DMA_OFFSET)

#define DWC_REG_OUT_EP_REG(x)		(DWC_OUT_EP_REG_START + x*0x20 + DWC_EP_REGS_OFFSET)
#define DWC_REG_OUT_EP_INTR(x)	(DWC_OUT_EP_REG_START + x*0x20 + DWC_EP_INTR_OFFSET)
#define DWC_REG_OUT_EP_TSIZE(x)	(DWC_OUT_EP_REG_START + x*0x20 + DWC_EP_TSIZE_OFFSET)
#define DWC_REG_OUT_EP_DMA(x)	(DWC_OUT_EP_REG_START + x*0x20 + DWC_EP_DMA_OFFSET)


#define DWC_REG_DATA_FIFO_START 0x1000
#define DWC_REG_DATA_FIFO(ep)	(DWC_REG_DATA_FIFO_START + ep * 0x1000)

/**
 * The <code>dwc_ep</code> structure represents the state of a single
 * endpoint when acting in device mode. It contains the data items
 * needed for an endpoint to be activated and transfer packets.
 */
typedef struct dwc_ep {
        /** EP number used for register address lookup */
        uint8_t  num;
        /** EP direction 0 = OUT */
        unsigned is_in : 1;
        /** EP active. */
        unsigned active : 1;

	  unsigned stopped : 1;
	  unsigned disabling : 1;

        /** Periodic Tx FIFO # for IN EPs For INTR EP set to 0 to use non-periodic Tx FIFO */
        unsigned tx_fifo_num : 4;
        /** EP type: 0 - Control, 1 - ISOC,  2 - BULK,  3 - INTR */
        unsigned type : 2;
#define DWC_OTG_EP_TYPE_CONTROL    0
#define DWC_OTG_EP_TYPE_ISOC       1
#define DWC_OTG_EP_TYPE_BULK       2
#define DWC_OTG_EP_TYPE_INTR       3

        /** DATA start PID for INTR and BULK EP */
        unsigned data_pid_start : 1;
        /** Frame (even/odd) for ISOC EP */
        unsigned even_odd_frame : 1;
        /** Max Packet bytes */
        unsigned maxpacket : 11;

        /** @name Transfer state */
	/** @{ */

	/**
	 * Pointer to the beginning of the transfer buffer -- do not modify
	 * during transfer.
	 */

	uint32_t dma_addr;

	uint8_t *start_xfer_buff;
        /** pointer to the transfer buffer */
        uint8_t *xfer_buff;
        /** Number of bytes to transfer */
        unsigned xfer_len : 19;
        /** Number of bytes transferred. */
        unsigned xfer_count : 19;
        /** Sent ZLP */
        unsigned sent_zlp : 1;
        /** Total len for control transfer */
        unsigned total_len : 19;

	/** @} */
} dwc_ep_t;

typedef struct pcd_struct_s{
	 /** SETUP packet for EP0
	 * This structure is allocated as a DMA buffer on PCD initialization
	 * with enough space for up to 3 setup packets.
	 */
        union {
                struct usb_ctrlrequest	req;
                uint32_t	d32[2];
        }setup_pkt;
	 int ep0state;

	 /* request */
	 char * buf;
	 int length;

	  /* bulk req */
	 char * bulk_buf;
	 int bulk_len;		// one bulk transfer length
	 int bulk_num;	// number of bulk transfer
	 int bulk_data_len;// data len of all data
	 int xfer_len;
	 char bulk_out;	// flag
	 char bulk_lock;	// bulk transfering
	 //short bulk_seq;

	 unsigned request_config : 1;
	 unsigned request_enable : 1;

}pcd_struct_t;

extern pcd_struct_t this_pcd;
extern dwc_ep_t g_dwc_eps[NUM_EP];

/**
 * @file
 *
 * This file contains the data structures for accessing the DWC_otg core registers.
 *
 * The application interfaces with the HS OTG core by reading from and
 * writing to the Control and Status Register (CSR) space through the
 * AHB Slave interface. These registers are 32 bits wide, and the
 * addresses are 32-bit-block aligned.
 * CSRs are classified as follows:
 * - Core Global Registers
 * - Device Mode Registers
 * - Device Global Registers
 * - Device Endpoint Specific Registers
 * - Host Mode Registers
 * - Host Global Registers
 * - Host Port CSRs
 * - Host Channel Specific Registers
 *
 * Only the Core Global registers can be accessed in both Device and
 * Host modes. When the HS OTG core is operating in one mode, either
 * Device or Host, the application must not access registers from the
 * other mode. When the core switches from one mode to another, the
 * registers in the new mode of operation must be reprogrammed as they
 * would be after a power-on reset.
 */

/****************************************************************************/
/** DWC_otg Core registers .
 * The dwc_otg_core_global_regs structure defines the size
 * and relative field offsets for the Core Global registers.
 */
typedef struct dwc_otg_core_global_regs
{
	/** OTG Control and Status Register.  <i>Offset: 000h</i> */
	volatile uint32_t gotgctl;
	/** OTG Interrupt Register.	 <i>Offset: 004h</i> */
	volatile uint32_t gotgint;
	/**Core AHB Configuration Register.	 <i>Offset: 008h</i> */
	volatile uint32_t gahbcfg;

#define DWC_GLBINTRMASK		0x0001
#define DWC_DMAENABLE		0x0020
#define DWC_NPTXEMPTYLVL_EMPTY	0x0080
#define DWC_NPTXEMPTYLVL_HALFEMPTY	0x0000
#define DWC_PTXEMPTYLVL_EMPTY	0x0100
#define DWC_PTXEMPTYLVL_HALFEMPTY	0x0000

	/**Core USB Configuration Register.	 <i>Offset: 00Ch</i> */
	volatile uint32_t gusbcfg;
	/**Core Reset Register.	 <i>Offset: 010h</i> */
	volatile uint32_t grstctl;
	/**Core Interrupt Register.	 <i>Offset: 014h</i> */
	volatile uint32_t gintsts;
	/**Core Interrupt Mask Register.  <i>Offset: 018h</i> */
	volatile uint32_t gintmsk;
	/**Receive Status Queue Read Register (Read Only).	<i>Offset: 01Ch</i> */
	volatile uint32_t grxstsr;
	/**Receive Status Queue Read & POP Register (Read Only).  <i>Offset: 020h</i>*/
	volatile uint32_t grxstsp;
	/**Receive FIFO Size Register.	<i>Offset: 024h</i> */
	volatile uint32_t grxfsiz;
	/**Non Periodic Transmit FIFO Size Register.  <i>Offset: 028h</i> */
	volatile uint32_t gnptxfsiz;
	/**Non Periodic Transmit FIFO/Queue Status Register (Read
	 * Only). <i>Offset: 02Ch</i> */
	volatile uint32_t gnptxsts;
	/**I2C Access Register.	 <i>Offset: 030h</i> */
	volatile uint32_t gi2cctl;
	/**PHY Vendor Control Register.	 <i>Offset: 034h</i> */
	volatile uint32_t gpvndctl;
	/**General Purpose Input/Output Register.  <i>Offset: 038h</i> */
	volatile uint32_t ggpio;
	/**User ID Register.  <i>Offset: 03Ch</i> */
	volatile uint32_t guid;
	/**Synopsys ID Register (Read Only).  <i>Offset: 040h</i> */
	volatile uint32_t gsnpsid;
	/**User HW Config1 Register (Read Only).  <i>Offset: 044h</i> */
	volatile uint32_t ghwcfg1;
	/**User HW Config2 Register (Read Only).  <i>Offset: 048h</i> */
	volatile uint32_t ghwcfg2;
#define DWC_SLAVE_ONLY_ARCH 0
#define DWC_EXT_DMA_ARCH 1
#define DWC_INT_DMA_ARCH 2

#define DWC_MODE_HNP_SRP_CAPABLE	0
#define DWC_MODE_SRP_ONLY_CAPABLE	1
#define DWC_MODE_NO_HNP_SRP_CAPABLE		2
#define DWC_MODE_SRP_CAPABLE_DEVICE		3
#define DWC_MODE_NO_SRP_CAPABLE_DEVICE	4
#define DWC_MODE_SRP_CAPABLE_HOST	5
#define DWC_MODE_NO_SRP_CAPABLE_HOST	6

	/**User HW Config3 Register (Read Only).  <i>Offset: 04Ch</i> */
	volatile uint32_t ghwcfg3;
	/**User HW Config4 Register (Read Only).  <i>Offset: 050h</i>*/
	volatile uint32_t ghwcfg4;
	/** Reserved  <i>Offset: 054h-0FFh</i> */
	uint32_t reserved[43];
	/** Host Periodic Transmit FIFO Size Register. <i>Offset: 100h</i> */
	volatile uint32_t hptxfsiz;
	/** Device Periodic Transmit FIFO#n Register if dedicated fifos are disabled,
		otherwise Device Transmit FIFO#n Register.
	 * <i>Offset: 104h + (FIFO_Number-1)*04h, 1 <= FIFO Number <= 15 (1<=n<=15).</i> */
	volatile uint32_t dptxfsiz_dieptxf[15];
} dwc_otg_core_global_regs_t;

/**
 * This union represents the bit fields of the Core OTG Control
 * and Status Register (GOTGCTL).  Set the bits using the bit
 * fields then write the <i>d32</i> value to the register.
 */
typedef union gotgctl_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		unsigned sesreqscs : 1;
		unsigned sesreq : 1;
		unsigned reserved2_7 : 6;
		unsigned hstnegscs : 1;
		unsigned hnpreq : 1;
		unsigned hstsethnpen : 1;
		unsigned devhnpen : 1;
		unsigned reserved12_15 : 4;
		unsigned conidsts : 1;
		unsigned reserved17 : 1;
		unsigned asesvld : 1;
		unsigned bsesvld : 1;
		unsigned currmod : 1;
		unsigned reserved21_31 : 11;
	} b;
} gotgctl_data_t;

/**
 * This union represents the bit fields of the Core OTG Interrupt Register
 * (GOTGINT).  Set/clear the bits using the bit fields then write the <i>d32</i>
 * value to the register.
 */
typedef union gotgint_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		/** Current Mode */
		unsigned reserved0_1 : 2;

		/** Session End Detected */
		unsigned sesenddet : 1;

		unsigned reserved3_7 : 5;

		/** Session Request Success Status Change */
		unsigned sesreqsucstschng : 1;
		/** Host Negotiation Success Status Change */
		unsigned hstnegsucstschng : 1;

		unsigned reserver10_16 : 7;

		/** Host Negotiation Detected */
		unsigned hstnegdet : 1;
		/** A-Device Timeout Change */
		unsigned adevtoutchng : 1;
		/** Debounce Done */
		unsigned debdone : 1;

		unsigned reserved31_20 : 12;

	} b;
} gotgint_data_t;


/**
 * This union represents the bit fields of the Core AHB Configuration
 * Register (GAHBCFG).	Set/clear the bits using the bit fields then
 * write the <i>d32</i> value to the register.
 */
typedef union gahbcfg_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		unsigned glblintrmsk : 1;
#define DWC_GAHBCFG_GLBINT_ENABLE		1

		unsigned hburstlen : 4;
#define DWC_GAHBCFG_INT_DMA_BURST_SINGLE	0
#define DWC_GAHBCFG_INT_DMA_BURST_INCR		1
#define DWC_GAHBCFG_INT_DMA_BURST_INCR4		3
#define DWC_GAHBCFG_INT_DMA_BURST_INCR8		5
#define DWC_GAHBCFG_INT_DMA_BURST_INCR16	7

		unsigned dmaenable : 1;
#define DWC_GAHBCFG_DMAENABLE			1
		unsigned reserved : 1;
		unsigned nptxfemplvl_txfemplvl : 1;
		unsigned ptxfemplvl : 1;
#define DWC_GAHBCFG_TXFEMPTYLVL_EMPTY		1
#define DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY	0
		unsigned reserved9_31 : 23;
	} b;
} gahbcfg_data_t;

/**
 * This union represents the bit fields of the Core USB Configuration
 * Register (GUSBCFG).	Set the bits using the bit fields then write
 * the <i>d32</i> value to the register.
 */
typedef union gusbcfg_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		unsigned toutcal : 3;
		unsigned phyif : 1;
		unsigned ulpi_utmi_sel : 1;
		unsigned fsintf : 1;
		unsigned physel : 1;
		unsigned ddrsel : 1;
		unsigned srpcap : 1;
		unsigned hnpcap : 1;
		unsigned usbtrdtim : 4;
		unsigned nptxfrwnden : 1;
		unsigned phylpwrclksel : 1;
		unsigned otgutmifssel : 1;
		unsigned ulpi_fsls : 1;
		unsigned ulpi_auto_res : 1;
		unsigned ulpi_clk_sus_m : 1;
		unsigned ulpi_ext_vbus_drv : 1;
		unsigned ulpi_int_vbus_indicator : 1;
		unsigned term_sel_dl_pulse : 1;
		unsigned reserved : 9;
	} b;
} gusbcfg_data_t;

/**
 * This union represents the bit fields of the Core Reset Register
 * (GRSTCTL).  Set/clear the bits using the bit fields then write the
 * <i>d32</i> value to the register.
 */
typedef union grstctl_data
{
	/** raw register data */
	unsigned int d32;
	/** register bits */
	struct
	{
		/** Core Soft Reset (CSftRst) (Device and Host)
		 *
		 * The application can flush the control logic in the
		 * entire core using this bit. This bit resets the
		 * pipelines in the AHB Clock domain as well as the
		 * PHY Clock domain.
		 *
		 * The state machines are reset to an IDLE state, the
		 * control bits in the CSRs are cleared, all the
		 * transmit FIFOs and the receive FIFO are flushed.
		 *
		 * The status mask bits that control the generation of
		 * the interrupt, are cleared, to clear the
		 * interrupt. The interrupt status bits are not
		 * cleared, so the application can get the status of
		 * any events that occurred in the core after it has
		 * set this bit.
		 *
		 * Any transactions on the AHB are terminated as soon
		 * as possible following the protocol. Any
		 * transactions on the USB are terminated immediately.
		 *
		 * The configuration settings in the CSRs are
		 * unchanged, so the software doesn't have to
		 * reprogram these registers (Device
		 * Configuration/Host Configuration/Core System
		 * Configuration/Core PHY Configuration).
		 *
		 * The application can write to this bit, any time it
		 * wants to reset the core. This is a self clearing
		 * bit and the core clears this bit after all the
		 * necessary logic is reset in the core, which may
		 * take several clocks, depending on the current state
		 * of the core.
		 */
		unsigned csftrst : 1;
		/** Hclk Soft Reset
		 *
		 * The application uses this bit to reset the control logic in
		 * the AHB clock domain. Only AHB clock domain pipelines are
		 * reset.
		 */
		unsigned hsftrst : 1;
		/** Host Frame Counter Reset (Host Only)<br>
		 *
		 * The application can reset the (micro)frame number
		 * counter inside the core, using this bit. When the
		 * (micro)frame counter is reset, the subsequent SOF
		 * sent out by the core, will have a (micro)frame
		 * number of 0.
		 */
		unsigned hstfrm : 1;
		/** In Token Sequence Learning Queue Flush
		 * (INTknQFlsh) (Device Only)
		 */
		unsigned intknqflsh : 1;
		/** RxFIFO Flush (RxFFlsh) (Device and Host)
		 *
		 * The application can flush the entire Receive FIFO
		 * using this bit.	<p>The application must first
		 * ensure that the core is not in the middle of a
		 * transaction.	 <p>The application should write into
		 * this bit, only after making sure that neither the
		 * DMA engine is reading from the RxFIFO nor the MAC
		 * is writing the data in to the FIFO.	<p>The
		 * application should wait until the bit is cleared
		 * before performing any other operations. This bit
		 * will takes 8 clocks (slowest of PHY or AHB clock)
		 * to clear.
		 */
		unsigned rxfflsh : 1;
		/** TxFIFO Flush (TxFFlsh) (Device and Host).
		 *
		 * This bit is used to selectively flush a single or
		 * all transmit FIFOs.	The application must first
		 * ensure that the core is not in the middle of a
		 * transaction.	 <p>The application should write into
		 * this bit, only after making sure that neither the
		 * DMA engine is writing into the TxFIFO nor the MAC
		 * is reading the data out of the FIFO.	 <p>The
		 * application should wait until the core clears this
		 * bit, before performing any operations. This bit
		 * will takes 8 clocks (slowest of PHY or AHB clock)
		 * to clear.
		 */
		unsigned txfflsh : 1;

		/** TxFIFO Number (TxFNum) (Device and Host).
		 *
		 * This is the FIFO number which needs to be flushed,
		 * using the TxFIFO Flush bit. This field should not
		 * be changed until the TxFIFO Flush bit is cleared by
		 * the core.
		 *	 - 0x0 : Non Periodic TxFIFO Flush
		 *	 - 0x1 : Periodic TxFIFO #1 Flush in device mode
		 *	   or Periodic TxFIFO in host mode
		 *	 - 0x2 : Periodic TxFIFO #2 Flush in device mode.
		 *	 - ...
		 *	 - 0xF : Periodic TxFIFO #15 Flush in device mode
		 *	 - 0x10: Flush all the Transmit NonPeriodic and
		 *	   Transmit Periodic FIFOs in the core
		 */
		unsigned txfnum : 5;
		/** Reserved */
		unsigned reserved11_29 : 19;
		/** DMA Request Signal.	 Indicated DMA request is in
		 * probress.  Used for debug purpose. */
		unsigned dmareq : 1;
		/** AHB Master Idle.  Indicates the AHB Master State
		 * Machine is in IDLE condition. */
		unsigned ahbidle : 1;
	} b;
} grstctl_t;


/**
 * This union represents the bit fields of the Core Interrupt Mask
 * Register (GINTMSK).	Set/clear the bits using the bit fields then
 * write the <i>d32</i> value to the register.
 */
typedef union gintmsk_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		unsigned reserved0 : 1;
		unsigned modemismatch : 1;
		unsigned otgintr : 1;
		unsigned sofintr : 1;
		unsigned rxstsqlvl : 1;
		unsigned nptxfempty : 1;
		unsigned ginnakeff : 1;
		unsigned goutnakeff : 1;
		unsigned reserved8 : 1;
		unsigned i2cintr : 1;
		unsigned erlysuspend : 1;
		unsigned usbsuspend : 1;
		unsigned usbreset : 1;
		unsigned enumdone : 1;
		unsigned isooutdrop : 1;
		unsigned eopframe : 1;
		unsigned reserved16 : 1;
		unsigned epmismatch : 1;
		unsigned inepintr : 1;
		unsigned outepintr : 1;
		unsigned incomplisoin : 1;
		unsigned incomplisoout : 1;
		unsigned reserved22_23 : 2;
		unsigned portintr : 1;
		unsigned hcintr : 1;
		unsigned ptxfempty : 1;
		unsigned reserved27 : 1;
		unsigned conidstschng : 1;
		unsigned disconnect : 1;
		unsigned sessreqintr : 1;
		unsigned wkupintr : 1;
	} b;
} gintmsk_data_t;
/**
 * This union represents the bit fields of the Core Interrupt Register
 * (GINTSTS).  Set/clear the bits using the bit fields then write the
 * <i>d32</i> value to the register.
 */
typedef union gintsts_data
{
	/** raw register data */
	uint32_t d32;
#define DWC_SOF_INTR_MASK 0x0008
	/** register bits */
	struct
	{
#define DWC_HOST_MODE 1
		unsigned curmode : 1;
		unsigned modemismatch : 1;
		unsigned otgintr : 1;
		unsigned sofintr : 1;
		unsigned rxstsqlvl : 1;
		unsigned nptxfempty : 1;
		unsigned ginnakeff : 1;
		unsigned goutnakeff : 1;
		unsigned reserved8 : 1;
		unsigned i2cintr : 1;
		unsigned erlysuspend : 1;
		unsigned usbsuspend : 1;
		unsigned usbreset : 1;
		unsigned enumdone : 1;
		unsigned isooutdrop : 1;
		unsigned eopframe : 1;
		unsigned intokenrx : 1;
		unsigned epmismatch : 1;
		unsigned inepint: 1;
		unsigned outepintr : 1;
		unsigned incomplisoin : 1;
		unsigned incomplisoout : 1;
		unsigned reserved22_23 : 2;
		unsigned portintr : 1;
		unsigned hcintr : 1;
		unsigned ptxfempty : 1;
		unsigned reserved27 : 1;
		unsigned conidstschng : 1;
		unsigned disconnect : 1;
		unsigned sessreqintr : 1;
		unsigned wkupintr : 1;
	} b;
} gintsts_data_t;


/**
 * This union represents the bit fields in the Device Receive Status Read and
 * Pop Registers (GRXSTSR, GRXSTSP) Read the register into the <i>d32</i>
 * element then read out the bits using the <i>b</i>it elements.
 */
typedef union device_grxsts_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		unsigned epnum : 4;
		unsigned bcnt : 11;
		unsigned dpid : 2;

#define DWC_STS_DATA_UPDT		0x2				  // OUT Data Packet
#define DWC_STS_XFER_COMP		0x3				  // OUT Data Transfer Complete

#define DWC_DSTS_GOUT_NAK		0x1				  // Global OUT NAK
#define DWC_DSTS_SETUP_COMP		0x4				  // Setup Phase Complete
#define DWC_DSTS_SETUP_UPDT 0x6				  // SETUP Packet
		unsigned pktsts : 4;
		unsigned fn : 4;
		unsigned reserved : 7;
	} b;
} device_grxsts_data_t;

/**
 * This union represents the bit fields in the Host Receive Status Read and
 * Pop Registers (GRXSTSR, GRXSTSP) Read the register into the <i>d32</i>
 * element then read out the bits using the <i>b</i>it elements.
 */
typedef union host_grxsts_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		unsigned chnum : 4;
		unsigned bcnt : 11;
		unsigned dpid : 2;

		unsigned pktsts : 4;
#define DWC_GRXSTS_PKTSTS_IN			  0x2
#define DWC_GRXSTS_PKTSTS_IN_XFER_COMP	  0x3
#define DWC_GRXSTS_PKTSTS_DATA_TOGGLE_ERR 0x5
#define DWC_GRXSTS_PKTSTS_CH_HALTED		  0x7

		unsigned reserved : 11;
	} b;
} host_grxsts_data_t;

/**
 * This union represents the bit fields in the FIFO Size Registers (HPTXFSIZ,
 * GNPTXFSIZ, DPTXFSIZn, DIEPTXFn). Read the register into the <i>d32</i> element then
 * read out the bits using the <i>b</i>it elements.
 */
typedef union fifosize_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		unsigned startaddr : 16;
		unsigned depth : 16;
	} b;
} fifosize_data_t;

/**
 * This union represents the bit fields in the Non-Periodic Transmit
 * FIFO/Queue Status Register (GNPTXSTS). Read the register into the
 * <i>d32</i> element then read out the bits using the <i>b</i>it
 * elements.
 */
typedef union gnptxsts_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		unsigned nptxfspcavail : 16;
		unsigned nptxqspcavail : 8;
		/** Top of the Non-Periodic Transmit Request Queue
		 *	- bit 24 - Terminate (Last entry for the selected
		 *	  channel/EP)
		 *	- bits 26:25 - Token Type
		 *	  - 2'b00 - IN/OUT
		 *	  - 2'b01 - Zero Length OUT
		 *	  - 2'b10 - PING/Complete Split
		 *	  - 2'b11 - Channel Halt
		 *	- bits 30:27 - Channel/EP Number
		 */
		unsigned nptxqtop_terminate : 1;
		unsigned nptxqtop_token : 2;
		unsigned nptxqtop_chnep : 4;
		unsigned reserved : 1;
	} b;
} gnptxsts_data_t;

/**
 * This union represents the bit fields in the Transmit
 * FIFO Status Register (DTXFSTS). Read the register into the
 * <i>d32</i> element then read out the bits using the <i>b</i>it
 * elements.
 */
typedef union dtxfsts_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		unsigned txfspcavail : 16;
		unsigned reserved : 16;
	} b;
} dtxfsts_data_t;

/**
 * This union represents the bit fields in the I2C Control Register
 * (I2CCTL). Read the register into the <i>d32</i> element then read out the
 * bits using the <i>b</i>it elements.
 */
typedef union gi2cctl_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		unsigned rwdata : 8;
		unsigned regaddr : 8;
		unsigned addr : 7;
		unsigned i2cen : 1;
		unsigned ack : 1;
		unsigned i2csuspctl : 1;
		unsigned i2cdevaddr : 2;
		unsigned reserved : 2;
		unsigned rw : 1;
		unsigned bsydne : 1;
	} b;
} gi2cctl_data_t;

/**
 * This union represents the bit fields in the User HW Config1
 * Register.  Read the register into the <i>d32</i> element then read
 * out the bits using the <i>b</i>it elements.
 */
typedef union hwcfg1_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		unsigned ep_dir0 : 2;
		unsigned ep_dir1 : 2;
		unsigned ep_dir2 : 2;
		unsigned ep_dir3 : 2;
		unsigned ep_dir4 : 2;
		unsigned ep_dir5 : 2;
		unsigned ep_dir6 : 2;
		unsigned ep_dir7 : 2;
		unsigned ep_dir8 : 2;
		unsigned ep_dir9 : 2;
		unsigned ep_dir10 : 2;
		unsigned ep_dir11 : 2;
		unsigned ep_dir12 : 2;
		unsigned ep_dir13 : 2;
		unsigned ep_dir14 : 2;
		unsigned ep_dir15 : 2;
	} b;
} hwcfg1_data_t;

/**
 * This union represents the bit fields in the User HW Config2
 * Register.  Read the register into the <i>d32</i> element then read
 * out the bits using the <i>b</i>it elements.
 */
typedef union hwcfg2_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		/* GHWCFG2 */
		unsigned op_mode : 3;
#define DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG 0
#define DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG 1
#define DWC_HWCFG2_OP_MODE_NO_HNP_SRP_CAPABLE_OTG 2
#define DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE 3
#define DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_DEVICE 4
#define DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST 5
#define DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_HOST 6

		unsigned architecture : 2;
		unsigned point2point : 1;
		unsigned hs_phy_type : 2;
#define DWC_HWCFG2_HS_PHY_TYPE_NOT_SUPPORTED 0
#define DWC_HWCFG2_HS_PHY_TYPE_UTMI 1
#define DWC_HWCFG2_HS_PHY_TYPE_ULPI 2
#define DWC_HWCFG2_HS_PHY_TYPE_UTMI_ULPI 3

		unsigned fs_phy_type : 2;
		unsigned num_dev_ep : 4;
		unsigned num_host_chan : 4;
		unsigned perio_ep_supported : 1;
		unsigned dynamic_fifo : 1;
		unsigned rx_status_q_depth : 2;
		unsigned nonperio_tx_q_depth : 2;
		unsigned host_perio_tx_q_depth : 2;
		unsigned dev_token_q_depth : 5;
		unsigned reserved31 : 1;
	} b;
} hwcfg2_data_t;

/**
 * This union represents the bit fields in the User HW Config3
 * Register.  Read the register into the <i>d32</i> element then read
 * out the bits using the <i>b</i>it elements.
 */
typedef union hwcfg3_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		/* GHWCFG3 */
		unsigned xfer_size_cntr_width : 4;
		unsigned packet_size_cntr_width : 3;
		unsigned otg_func : 1;
		unsigned i2c : 1;
		unsigned vendor_ctrl_if : 1;
		unsigned optional_features : 1;
		unsigned synch_reset_type : 1;
		unsigned ahb_phy_clock_synch : 1;
		unsigned reserved15_13 : 3;
		unsigned dfifo_depth : 16;
	} b;
} hwcfg3_data_t;

/**
 * This union represents the bit fields in the User HW Config4
 * Register.  Read the register into the <i>d32</i> element then read
 * out the bits using the <i>b</i>it elements.
 */
typedef union hwcfg4_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		unsigned num_dev_perio_in_ep : 4;
		unsigned power_optimiz : 1;
		unsigned min_ahb_freq : 9;
		unsigned utmi_phy_data_width : 2;
		unsigned num_dev_mode_ctrl_ep : 4;
		unsigned iddig_filt_en : 1;
		unsigned vbus_valid_filt_en : 1;
		unsigned a_valid_filt_en : 1;
		unsigned b_valid_filt_en : 1;
		unsigned session_end_filt_en : 1;
		unsigned ded_fifo_en : 1;
		unsigned num_in_eps : 4;
		unsigned reserved31_30 : 2;
	} b;
} hwcfg4_data_t;

////////////////////////////////////////////
// Device Registers
/**
 * Device Global Registers. <i>Offsets 800h-BFFh</i>
 *
 * The following structures define the size and relative field offsets
 * for the Device Mode Registers.
 *
 * <i>These registers are visible only in Device mode and must not be
 * accessed in Host mode, as the results are unknown.</i>
 */
typedef struct dwc_otg_dev_global_regs
{
	/** Device Configuration Register. <i>Offset 800h</i> */
	volatile uint32_t dcfg;
	/** Device Control Register. <i>Offset: 804h</i> */
	volatile uint32_t dctl;
	/** Device Status Register (Read Only). <i>Offset: 808h</i> */
	volatile uint32_t dsts;
	/** Reserved. <i>Offset: 80Ch</i> */
	uint32_t unused;
	/** Device IN Endpoint Common Interrupt Mask
	 * Register. <i>Offset: 810h</i> */
	volatile uint32_t diepmsk;
	/** Device OUT Endpoint Common Interrupt Mask
	 * Register. <i>Offset: 814h</i> */
	volatile uint32_t doepmsk;
	/** Device All Endpoints Interrupt Register.  <i>Offset: 818h</i> */
	volatile uint32_t daint;
	/** Device All Endpoints Interrupt Mask Register.  <i>Offset:
	 * 81Ch</i> */
	volatile uint32_t daintmsk;
	/** Device IN Token Queue Read Register-1 (Read Only).
	 * <i>Offset: 820h</i> */
	volatile uint32_t dtknqr1;
	/** Device IN Token Queue Read Register-2 (Read Only).
	 * <i>Offset: 824h</i> */
	volatile uint32_t dtknqr2;
	/** Device VBUS	 discharge Register.  <i>Offset: 828h</i> */
	volatile uint32_t dvbusdis;
	/** Device VBUS Pulse Register.	 <i>Offset: 82Ch</i> */
	volatile uint32_t dvbuspulse;
	/** Device IN Token Queue Read Register-3 (Read Only). /
	 *	Device Thresholding control register (Read/Write)
	 * <i>Offset: 830h</i> */
	volatile uint32_t dtknqr3_dthrctl;
	/** Device IN Token Queue Read Register-4 (Read Only). /
	 *	Device IN EPs empty Inr. Mask Register (Read/Write)
	 * <i>Offset: 834h</i> */
	volatile uint32_t dtknqr4_fifoemptymsk;
} dwc_otg_device_global_regs_t;

/**
 * This union represents the bit fields in the Device Configuration
 * Register.  Read the register into the <i>d32</i> member then
 * set/clear the bits using the <i>b</i>it elements.  Write the
 * <i>d32</i> member to the dcfg register.
 */
typedef union dcfg_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		/** Device Speed */
		unsigned devspd : 2;
		/** Non Zero Length Status OUT Handshake */
		unsigned nzstsouthshk : 1;
#define DWC_DCFG_SEND_STALL 1

		unsigned reserved3 : 1;
		/** Device Addresses */
		unsigned devaddr : 7;
		/** Periodic Frame Interval */
		unsigned perfrint : 2;
#define DWC_DCFG_FRAME_INTERVAL_80 0
#define DWC_DCFG_FRAME_INTERVAL_85 1
#define DWC_DCFG_FRAME_INTERVAL_90 2
#define DWC_DCFG_FRAME_INTERVAL_95 3

		unsigned reserved13_17 : 5;
		/** In Endpoint Mis-match count */
		unsigned epmscnt : 4;
	} b;
} dcfg_data_t;

/**
 * This union represents the bit fields in the Device Control
 * Register.  Read the register into the <i>d32</i> member then
 * set/clear the bits using the <i>b</i>it elements.
 */
typedef union dctl_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		/** Remote Wakeup */
		unsigned rmtwkupsig : 1;
		/** Soft Disconnect */
		unsigned sftdiscon : 1;
		/** Global Non-Periodic IN NAK Status */
		unsigned gnpinnaksts : 1;
		/** Global OUT NAK Status */
		unsigned goutnaksts : 1;
		/** Test Control */
		unsigned tstctl : 3;
		/** Set Global Non-Periodic IN NAK */
		unsigned sgnpinnak : 1;
		/** Clear Global Non-Periodic IN NAK */
		unsigned cgnpinnak : 1;
		/** Set Global OUT NAK */
		unsigned sgoutnak : 1;
		/** Clear Global OUT NAK */
		unsigned cgoutnak : 1;

		unsigned reserved : 21;
	} b;
} dctl_data_t;

/**
 * This union represents the bit fields in the Device Status
 * Register.  Read the register into the <i>d32</i> member then
 * set/clear the bits using the <i>b</i>it elements.
 */
typedef union dsts_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		/** Suspend Status */
		unsigned suspsts : 1;
		/** Enumerated Speed */
		unsigned enumspd : 2;
#define DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ 0
#define DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ 1
#define DWC_DSTS_ENUMSPD_LS_PHY_6MHZ		   2
#define DWC_DSTS_ENUMSPD_FS_PHY_48MHZ		   3
		/** Erratic Error */
		unsigned errticerr : 1;
		unsigned reserved4_7: 4;
		/** Frame or Microframe Number of the received SOF */
		unsigned soffn : 14;
		unsigned reserved22_31 : 10;
	} b;
} dsts_data_t;


/**
 * This union represents the bit fields in the Device IN EP Interrupt
 * Register and the Device IN EP Common Mask Register.
 *
 * - Read the register into the <i>d32</i> member then set/clear the
 *	 bits using the <i>b</i>it elements.
 */
typedef union diepint_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		/** Transfer complete mask */
		unsigned xfercompl : 1;
		/** Endpoint disable mask */
		unsigned epdisabled : 1;
		/** AHB Error mask */
		unsigned ahberr : 1;
		/** TimeOUT Handshake mask (non-ISOC EPs) */
		unsigned timeout : 1;
		/** IN Token received with TxF Empty mask */
		unsigned intktxfemp : 1;
		/** IN Token Received with EP mismatch mask */
		unsigned intknepmis : 1;
		/** IN Endpoint HAK Effective mask */
		unsigned inepnakeff : 1;
		/** IN Endpoint HAK Effective mask */
		unsigned emptyintr : 1;

		unsigned txfifoundrn : 1;

		unsigned reserved08_31 : 23;
		} b;
} diepint_data_t;
/**
 * This union represents the bit fields in the Device IN EP Common
 * Interrupt Mask Register.
 */
typedef union diepint_data diepmsk_data_t;

/**
 * This union represents the bit fields in the Device OUT EP Interrupt
 * Registerand Device OUT EP Common Interrupt Mask Register.
 *
 * - Read the register into the <i>d32</i> member then set/clear the
 *	 bits using the <i>b</i>it elements.
 */
typedef union doepint_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		/** Transfer complete */
		unsigned xfercompl : 1;
		/** Endpoint disable  */
		unsigned epdisabled : 1;
		/** AHB Error */
		unsigned ahberr : 1;
		/** Setup Phase Done (contorl EPs) */
		unsigned setup : 1;
		unsigned reserved04_31 : 28;
	} b;
} doepint_data_t;
/**
 * This union represents the bit fields in the Device OUT EP Common
 * Interrupt Mask Register.
 */
typedef union doepint_data doepmsk_data_t;


/**
 * This union represents the bit fields in the Device All EP Interrupt
 * and Mask Registers.
 * - Read the register into the <i>d32</i> member then set/clear the
 *	 bits using the <i>b</i>it elements.
 */
typedef union daint_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		/** IN Endpoint bits */
		unsigned in : 16;
		/** OUT Endpoint bits */
		unsigned out : 16;
	} ep;
	struct
	{
		/** IN Endpoint bits */
		unsigned inep0	: 1;
		unsigned inep1	: 1;
		unsigned inep2	: 1;
		unsigned inep3	: 1;
		unsigned inep4	: 1;
		unsigned inep5	: 1;
		unsigned inep6	: 1;
		unsigned inep7	: 1;
		unsigned inep8	: 1;
		unsigned inep9	: 1;
		unsigned inep10 : 1;
		unsigned inep11 : 1;
		unsigned inep12 : 1;
		unsigned inep13 : 1;
		unsigned inep14 : 1;
		unsigned inep15 : 1;
		/** OUT Endpoint bits */
		unsigned outep0	 : 1;
		unsigned outep1	 : 1;
		unsigned outep2	 : 1;
		unsigned outep3	 : 1;
		unsigned outep4	 : 1;
		unsigned outep5	 : 1;
		unsigned outep6	 : 1;
		unsigned outep7	 : 1;
		unsigned outep8	 : 1;
		unsigned outep9	 : 1;
		unsigned outep10 : 1;
		unsigned outep11 : 1;
		unsigned outep12 : 1;
		unsigned outep13 : 1;
		unsigned outep14 : 1;
		unsigned outep15 : 1;
	} b;
} daint_data_t;

/**
 * This union represents the bit fields in the Device IN Token Queue
 * Read Registers.
 * - Read the register into the <i>d32</i> member.
 * - READ-ONLY Register
 */
typedef union dtknq1_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		/** In Token Queue Write Pointer */
		unsigned intknwptr : 5;
		/** Reserved */
		unsigned reserved05_06 : 2;
		/** write pointer has wrapped. */
		unsigned wrap_bit : 1;
		/** EP Numbers of IN Tokens 0 ... 4 */
		unsigned epnums0_5 : 24;
	}b;
} dtknq1_data_t;

/**
 * This union represents Threshold control Register
 * - Read and write the register into the <i>d32</i> member.
 * - READ-WRITABLE Register
 */
typedef union dthrctl_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		/** non ISO Tx Thr. Enable */
		unsigned non_iso_thr_en : 1;
		/** ISO Tx Thr. Enable */
		unsigned iso_thr_en : 1;
		/** Tx Thr. Length */
		unsigned tx_thr_len : 9;
		/** Reserved */
		unsigned reserved11_15 : 5;
		/** Rx Thr. Enable */
		unsigned rx_thr_en : 1;
		/** Rx Thr. Length */
		unsigned rx_thr_len : 9;
		/** Reserved */
		unsigned reserved26_31 : 6;
	}b;
} dthrctl_data_t;


/**
 * Device Logical IN Endpoint-Specific Registers. <i>Offsets
 * 900h-AFCh</i>
 *
 * There will be one set of endpoint registers per logical endpoint
 * implemented.
 *
 * <i>These registers are visible only in Device mode and must not be
 * accessed in Host mode, as the results are unknown.</i>
 */
typedef struct dwc_otg_dev_in_ep_regs
{
	/** Device IN Endpoint Control Register. <i>Offset:900h +
	 * (ep_num * 20h) + 00h</i> */
	volatile uint32_t diepctl;
	/** Reserved. <i>Offset:900h + (ep_num * 20h) + 04h</i> */
	uint32_t reserved04;
	/** Device IN Endpoint Interrupt Register. <i>Offset:900h +
	 * (ep_num * 20h) + 08h</i> */
	volatile uint32_t diepint;
	/** Reserved. <i>Offset:900h + (ep_num * 20h) + 0Ch</i> */
	uint32_t reserved0C;
	/** Device IN Endpoint Transfer Size
	 * Register. <i>Offset:900h + (ep_num * 20h) + 10h</i> */
	volatile uint32_t dieptsiz;
	/** Device IN Endpoint DMA Address Register. <i>Offset:900h +
	 * (ep_num * 20h) + 14h</i> */
	volatile uint32_t diepdma;
	/** Device IN Endpoint Transmit FIFO Status Register. <i>Offset:900h +
	 * (ep_num * 20h) + 18h</i> */
	volatile uint32_t dtxfsts;
	/** Reserved. <i>Offset:900h + (ep_num * 20h) + 1Ch - 900h +
	 * (ep_num * 20h) + 1Ch</i>*/
	uint32_t reserved18;
} dwc_otg_dev_in_ep_regs_t;

/**
 * Device Logical OUT Endpoint-Specific Registers. <i>Offsets:
 * B00h-CFCh</i>
 *
 * There will be one set of endpoint registers per logical endpoint
 * implemented.
 *
 * <i>These registers are visible only in Device mode and must not be
 * accessed in Host mode, as the results are unknown.</i>
 */
typedef struct dwc_otg_dev_out_ep_regs
{
	/** Device OUT Endpoint Control Register. <i>Offset:B00h +
	 * (ep_num * 20h) + 00h</i> */
	volatile uint32_t doepctl;
	/** Device OUT Endpoint Frame number Register.	<i>Offset:
	 * B00h + (ep_num * 20h) + 04h</i> */
	volatile uint32_t doepfn;
	/** Device OUT Endpoint Interrupt Register. <i>Offset:B00h +
	 * (ep_num * 20h) + 08h</i> */
	volatile uint32_t doepint;
	/** Reserved. <i>Offset:B00h + (ep_num * 20h) + 0Ch</i> */
	uint32_t reserved0C;
	/** Device OUT Endpoint Transfer Size Register. <i>Offset:
	 * B00h + (ep_num * 20h) + 10h</i> */
	volatile uint32_t doeptsiz;
	/** Device OUT Endpoint DMA Address Register. <i>Offset:B00h
	 * + (ep_num * 20h) + 14h</i> */
	volatile uint32_t doepdma;
	/** Reserved. <i>Offset:B00h + (ep_num * 20h) + 18h - B00h +
	 * (ep_num * 20h) + 1Ch</i> */
	uint32_t unused[2];
} dwc_otg_dev_out_ep_regs_t;

/**
 * This union represents the bit fields in the Device EP Control
 * Register.  Read the register into the <i>d32</i> member then
 * set/clear the bits using the <i>b</i>it elements.
 */
typedef union depctl_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		/** Maximum Packet Size
		 * IN/OUT EPn
		 * IN/OUT EP0 - 2 bits
		 *	 2'b00: 64 Bytes
		 *	 2'b01: 32
		 *	 2'b10: 16
		 *	 2'b11: 8 */
		unsigned mps : 11;
#define DWC_DEP0CTL_MPS_64	 0
#define DWC_DEP0CTL_MPS_32	 1
#define DWC_DEP0CTL_MPS_16	 2
#define DWC_DEP0CTL_MPS_8	 3

		/** Next Endpoint
		 * IN EPn/IN EP0
		 * OUT EPn/OUT EP0 - reserved */
		unsigned nextep : 4;

		/** USB Active Endpoint */
		unsigned usbactep : 1;

		/** Endpoint DPID (INTR/Bulk IN and OUT endpoints)
		 * This field contains the PID of the packet going to
		 * be received or transmitted on this endpoint. The
		 * application should program the PID of the first
		 * packet going to be received or transmitted on this
		 * endpoint , after the endpoint is
		 * activated. Application use the SetD1PID and
		 * SetD0PID fields of this register to program either
		 * D0 or D1 PID.
		 *
		 * The encoding for this field is
		 *	 - 0: D0
		 *	 - 1: D1
		 */
		unsigned dpid : 1;

		/** NAK Status */
		unsigned naksts : 1;

		/** Endpoint Type
		 *	2'b00: Control
		 *	2'b01: Isochronous
		 *	2'b10: Bulk
		 *	2'b11: Interrupt */
		unsigned eptype : 2;

		/** Snoop Mode
		 * OUT EPn/OUT EP0
		 * IN EPn/IN EP0 - reserved */
		unsigned snp : 1;

		/** Stall Handshake */
		unsigned stall : 1;

		/** Tx Fifo Number
		 * IN EPn/IN EP0
		 * OUT EPn/OUT EP0 - reserved */
		unsigned txfnum : 4;

		/** Clear NAK */
		unsigned cnak : 1;
		/** Set NAK */
		unsigned snak : 1;
		/** Set DATA0 PID (INTR/Bulk IN and OUT endpoints)
		 * Writing to this field sets the Endpoint DPID (DPID)
		 * field in this register to DATA0. Set Even
		 * (micro)frame (SetEvenFr) (ISO IN and OUT Endpoints)
		 * Writing to this field sets the Even/Odd
		 * (micro)frame (EO_FrNum) field to even (micro)
		 * frame.
		 */
		unsigned setd0pid : 1;
		/** Set DATA1 PID (INTR/Bulk IN and OUT endpoints)
		 * Writing to this field sets the Endpoint DPID (DPID)
		 * field in this register to DATA1 Set Odd
		 * (micro)frame (SetOddFr) (ISO IN and OUT Endpoints)
		 * Writing to this field sets the Even/Odd
		 * (micro)frame (EO_FrNum) field to odd (micro) frame.
		 */
		unsigned setd1pid : 1;

		/** Endpoint Disable */
		unsigned epdis : 1;
		/** Endpoint Enable */
		unsigned epena : 1;
		} b;
} depctl_data_t;

/**
 * This union represents the bit fields in the Device EP Transfer
 * Size Register.  Read the register into the <i>d32</i> member then
 * set/clear the bits using the <i>b</i>it elements.
 */
typedef union deptsiz_data
{
		/** raw register data */
		uint32_t d32;
		/** register bits */
		struct {
		/** Transfer size */
		unsigned xfersize : 19;
		/** Packet Count */
		unsigned pktcnt : 10;
		/** Multi Count - Periodic IN endpoints */
		unsigned mc : 2;
		unsigned reserved : 1;
		} b;
} deptsiz_data_t;

/**
 * This union represents the bit fields in the Device EP 0 Transfer
 * Size Register.  Read the register into the <i>d32</i> member then
 * set/clear the bits using the <i>b</i>it elements.
 */
typedef union deptsiz0_data
{
		/** raw register data */
		uint32_t d32;
		/** register bits */
		struct {
		/** Transfer size */
		unsigned xfersize : 7;
				/** Reserved */
				unsigned reserved7_18 : 12;
		/** Packet Count */
		unsigned pktcnt : 1;
				/** Reserved */
		unsigned reserved20_28 : 9;
				/**Setup Packet Count (DOEPTSIZ0 Only) */
				unsigned supcnt : 2;
				unsigned reserved31;
		} b;
} deptsiz0_data_t;


/** Maximum number of Periodic FIFOs */
#define MAX_PERIO_FIFOS 15
/** Maximum number of Periodic FIFOs */
#define MAX_TX_FIFOS 15

/** Maximum number of Endpoints/HostChannels */
#define MAX_EPS_CHANNELS 16

/**
 * The dwc_otg_dev_if structure contains information needed to manage
 * the DWC_otg controller acting in device mode. It represents the
 * programming view of the device-specific aspects of the controller.
 */
typedef struct dwc_otg_dev_if
{
	/** Pointer to device Global registers.
	 * Device Global Registers starting at offset 800h
	 */
	dwc_otg_device_global_regs_t *dev_global_regs;
#define DWC_DEV_GLOBAL_REG_OFFSET 0x800

	/**
	 * Device Logical IN Endpoint-Specific Registers 900h-AFCh
	 */
	dwc_otg_dev_in_ep_regs_t	 *in_ep_regs[MAX_EPS_CHANNELS];
#define DWC_DEV_IN_EP_REG_OFFSET 0x900
#define DWC_EP_REG_OFFSET 0x20

	/** Device Logical OUT Endpoint-Specific Registers B00h-CFCh */
	dwc_otg_dev_out_ep_regs_t	 *out_ep_regs[MAX_EPS_CHANNELS];
#define DWC_DEV_OUT_EP_REG_OFFSET 0xB00

	/* Device configuration information*/
	uint8_t	 speed;				 /**< Device Speed	0: Unknown, 1: LS, 2:FS, 3: HS */
	uint8_t	 num_in_eps;		 /**< Number # of Tx EP range: 0-15 exept ep0 */
	uint8_t	 num_out_eps;		 /**< Number # of Rx EP range: 0-15 exept ep 0*/

	/** Size of periodic FIFOs (Bytes) */
	uint16_t perio_tx_fifo_size[MAX_PERIO_FIFOS];

	/** Size of Tx FIFOs (Bytes) */
	uint16_t tx_fifo_size[MAX_TX_FIFOS];

	/** Thresholding enable flags and length varaiables **/
	uint16_t rx_thr_en;
	uint16_t iso_tx_thr_en;
	uint16_t non_iso_tx_thr_en;

	uint16_t rx_thr_length;
	uint16_t tx_thr_length;

} dwc_otg_dev_if_t;




/////////////////////////////////////////////////
// Host Mode Register Structures
//
/**
 * The Host Global Registers structure defines the size and relative
 * field offsets for the Host Mode Global Registers.  Host Global
 * Registers offsets 400h-7FFh.
*/
typedef struct dwc_otg_host_global_regs
{
	/** Host Configuration Register.   <i>Offset: 400h</i> */
	volatile uint32_t hcfg;
	/** Host Frame Interval Register.	<i>Offset: 404h</i> */
	volatile uint32_t hfir;
	/** Host Frame Number / Frame Remaining Register. <i>Offset: 408h</i> */
	volatile uint32_t hfnum;
	/** Reserved.	<i>Offset: 40Ch</i> */
	uint32_t reserved40C;
	/** Host Periodic Transmit FIFO/ Queue Status Register. <i>Offset: 410h</i> */
	volatile uint32_t hptxsts;
	/** Host All Channels Interrupt Register. <i>Offset: 414h</i> */
	volatile uint32_t haint;
	/** Host All Channels Interrupt Mask Register. <i>Offset: 418h</i> */
	volatile uint32_t haintmsk;
} dwc_otg_host_global_regs_t;

/**
 * This union represents the bit fields in the Host Configuration Register.
 * Read the register into the <i>d32</i> member then set/clear the bits using
 * the <i>b</i>it elements. Write the <i>d32</i> member to the hcfg register.
 */
typedef union hcfg_data
{
	/** raw register data */
	uint32_t d32;

	/** register bits */
	struct
	{
		/** FS/LS Phy Clock Select */
		unsigned fslspclksel : 2;
#define DWC_HCFG_30_60_MHZ 0
#define DWC_HCFG_48_MHZ	   1
#define DWC_HCFG_6_MHZ	   2

		/** FS/LS Only Support */
		unsigned fslssupp : 1;
		} b;
} hcfg_data_t;

/**
 * This union represents the bit fields in the Host Frame Remaing/Number
 * Register.
 */
typedef union hfir_data
{
	/** raw register data */
	uint32_t d32;

	/** register bits */
	struct
	{
		unsigned frint : 16;
		unsigned reserved : 16;
	} b;
} hfir_data_t;

/**
 * This union represents the bit fields in the Host Frame Remaing/Number
 * Register.
 */
typedef union hfnum_data
{
	/** raw register data */
	uint32_t d32;

	/** register bits */
	struct
	{
		unsigned frnum : 16;
#define DWC_HFNUM_MAX_FRNUM 0x3FFF
		unsigned frrem : 16;
	} b;
} hfnum_data_t;

typedef union hptxsts_data
{
	/** raw register data */
	uint32_t d32;

	/** register bits */
	struct
	{
		unsigned ptxfspcavail : 16;
		unsigned ptxqspcavail : 8;
		/** Top of the Periodic Transmit Request Queue
		 *	- bit 24 - Terminate (last entry for the selected channel)
		 *	- bits 26:25 - Token Type
		 *	  - 2'b00 - Zero length
		 *	  - 2'b01 - Ping
		 *	  - 2'b10 - Disable
		 *	- bits 30:27 - Channel Number
		 *	- bit 31 - Odd/even microframe
		 */
		unsigned ptxqtop_terminate : 1;
		unsigned ptxqtop_token : 2;
		unsigned ptxqtop_chnum : 4;
		unsigned ptxqtop_odd : 1;
	} b;
} hptxsts_data_t;

/**
 * This union represents the bit fields in the Host Port Control and Status
 * Register. Read the register into the <i>d32</i> member then set/clear the
 * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
 * hprt0 register.
 */
typedef union hprt0_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		unsigned prtconnsts : 1;
		unsigned prtconndet : 1;
		unsigned prtena : 1;
		unsigned prtenchng : 1;
		unsigned prtovrcurract : 1;
		unsigned prtovrcurrchng : 1;
		unsigned prtres : 1;
		unsigned prtsusp : 1;
		unsigned prtrst : 1;
		unsigned reserved9 : 1;
		unsigned prtlnsts : 2;
		unsigned prtpwr : 1;
		unsigned prttstctl : 4;
		unsigned prtspd : 2;
#define DWC_HPRT0_PRTSPD_HIGH_SPEED 0
#define DWC_HPRT0_PRTSPD_FULL_SPEED 1
#define DWC_HPRT0_PRTSPD_LOW_SPEED	2
		unsigned reserved19_31 : 13;
	} b;
} hprt0_data_t;

/**
 * This union represents the bit fields in the Host All Interrupt
 * Register.
 */
typedef union haint_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		unsigned ch0 : 1;
		unsigned ch1 : 1;
		unsigned ch2 : 1;
		unsigned ch3 : 1;
		unsigned ch4 : 1;
		unsigned ch5 : 1;
		unsigned ch6 : 1;
		unsigned ch7 : 1;
		unsigned ch8 : 1;
		unsigned ch9 : 1;
		unsigned ch10 : 1;
		unsigned ch11 : 1;
		unsigned ch12 : 1;
		unsigned ch13 : 1;
		unsigned ch14 : 1;
		unsigned ch15 : 1;
		unsigned reserved : 16;
	} b;

	struct
	{
		unsigned chint : 16;
		unsigned reserved : 16;
	} b2;
} haint_data_t;

/**
 * This union represents the bit fields in the Host All Interrupt
 * Register.
 */
typedef union haintmsk_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		unsigned ch0 : 1;
		unsigned ch1 : 1;
		unsigned ch2 : 1;
		unsigned ch3 : 1;
		unsigned ch4 : 1;
		unsigned ch5 : 1;
		unsigned ch6 : 1;
		unsigned ch7 : 1;
		unsigned ch8 : 1;
		unsigned ch9 : 1;
		unsigned ch10 : 1;
		unsigned ch11 : 1;
		unsigned ch12 : 1;
		unsigned ch13 : 1;
		unsigned ch14 : 1;
		unsigned ch15 : 1;
		unsigned reserved : 16;
	} b;

	struct
	{
		unsigned chint : 16;
		unsigned reserved : 16;
	} b2;
} haintmsk_data_t;

/**
 * Host Channel Specific Registers. <i>500h-5FCh</i>
 */
typedef struct dwc_otg_hc_regs
{
	/** Host Channel 0 Characteristic Register. <i>Offset: 500h + (chan_num * 20h) + 00h</i> */
	volatile uint32_t hcchar;
	/** Host Channel 0 Split Control Register. <i>Offset: 500h + (chan_num * 20h) + 04h</i> */
	volatile uint32_t hcsplt;
	/** Host Channel 0 Interrupt Register. <i>Offset: 500h + (chan_num * 20h) + 08h</i> */
	volatile uint32_t hcint;
	/** Host Channel 0 Interrupt Mask Register. <i>Offset: 500h + (chan_num * 20h) + 0Ch</i> */
	volatile uint32_t hcintmsk;
	/** Host Channel 0 Transfer Size Register. <i>Offset: 500h + (chan_num * 20h) + 10h</i> */
	volatile uint32_t hctsiz;
	/** Host Channel 0 DMA Address Register. <i>Offset: 500h + (chan_num * 20h) + 14h</i> */
	volatile uint32_t hcdma;
	/** Reserved.  <i>Offset: 500h + (chan_num * 20h) + 18h - 500h + (chan_num * 20h) + 1Ch</i> */
	uint32_t reserved[2];
} dwc_otg_hc_regs_t;

/**
 * This union represents the bit fields in the Host Channel Characteristics
 * Register. Read the register into the <i>d32</i> member then set/clear the
 * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
 * hcchar register.
 */
typedef union hcchar_data
{
	/** raw register data */
	uint32_t d32;

	/** register bits */
	struct
	{
		/** Maximum packet size in bytes */
		unsigned mps : 11;

		/** Endpoint number */
		unsigned epnum : 4;

		/** 0: OUT, 1: IN */
		unsigned epdir : 1;

		unsigned reserved : 1;

		/** 0: Full/high speed device, 1: Low speed device */
		unsigned lspddev : 1;

		/** 0: Control, 1: Isoc, 2: Bulk, 3: Intr */
		unsigned eptype : 2;

		/** Packets per frame for periodic transfers. 0 is reserved. */
		unsigned multicnt : 2;

		/** Device address */
		unsigned devaddr : 7;

		/**
		 * Frame to transmit periodic transaction.
		 * 0: even, 1: odd
		 */
		unsigned oddfrm : 1;

		/** Channel disable */
		unsigned chdis : 1;

		/** Channel enable */
		unsigned chen : 1;
	} b;
} hcchar_data_t;

typedef union hcsplt_data
{
	/** raw register data */
	uint32_t d32;

	/** register bits */
	struct
	{
		/** Port Address */
		unsigned prtaddr : 7;

		/** Hub Address */
		unsigned hubaddr : 7;

		/** Transaction Position */
		unsigned xactpos : 2;
#define DWC_HCSPLIT_XACTPOS_MID 0
#define DWC_HCSPLIT_XACTPOS_END 1
#define DWC_HCSPLIT_XACTPOS_BEGIN 2
#define DWC_HCSPLIT_XACTPOS_ALL 3

		/** Do Complete Split */
		unsigned compsplt : 1;

		/** Reserved */
		unsigned reserved : 14;

		/** Split Enble */
		unsigned spltena : 1;
	} b;
} hcsplt_data_t;


/**
 * This union represents the bit fields in the Host All Interrupt
 * Register.
 */
typedef union hcint_data
{
	/** raw register data */
	uint32_t d32;
	/** register bits */
	struct
	{
		/** Transfer Complete */
		unsigned xfercomp : 1;
		/** Channel Halted */
		unsigned chhltd : 1;
		/** AHB Error */
		unsigned ahberr : 1;
		/** STALL Response Received */
		unsigned stall : 1;
		/** NAK Response Received */
		unsigned nak : 1;
		/** ACK Response Received */
		unsigned ack : 1;
		/** NYET Response Received */
		unsigned nyet : 1;
		/** Transaction Err */
		unsigned xacterr : 1;
		/** Babble Error */
		unsigned bblerr : 1;
		/** Frame Overrun */
		unsigned frmovrun : 1;
		/** Data Toggle Error */
		unsigned datatglerr : 1;
		/** Reserved */
		unsigned reserved : 21;
	} b;
} hcint_data_t;

/**
 * This union represents the bit fields in the Host Channel Transfer Size
 * Register. Read the register into the <i>d32</i> member then set/clear the
 * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
 * hcchar register.
 */
typedef union hctsiz_data
{
	/** raw register data */
	uint32_t d32;

	/** register bits */
	struct
	{
		/** Total transfer size in bytes */
		unsigned xfersize : 19;

		/** Data packets to transfer */
		unsigned pktcnt : 10;

		/**
		 * Packet ID for next data packet
		 * 0: DATA0
		 * 1: DATA2
		 * 2: DATA1
		 * 3: MDATA (non-Control), SETUP (Control)
		 */
		unsigned pid : 2;
#define DWC_HCTSIZ_DATA0 0
#define DWC_HCTSIZ_DATA1 2
#define DWC_HCTSIZ_DATA2 1
#define DWC_HCTSIZ_MDATA 3
#define DWC_HCTSIZ_SETUP 3

		/** Do PING protocol when 1 */
		unsigned dopng : 1;
	} b;
} hctsiz_data_t;

/**
 * This union represents the bit fields in the Host Channel Interrupt Mask
 * Register. Read the register into the <i>d32</i> member then set/clear the
 * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
 * hcintmsk register.
 */
typedef union hcintmsk_data
{
	/** raw register data */
	uint32_t d32;

	/** register bits */
	struct
	{
		unsigned xfercompl : 1;
		unsigned chhltd : 1;
		unsigned ahberr : 1;
		unsigned stall : 1;
		unsigned nak : 1;
		unsigned ack : 1;
		unsigned nyet : 1;
		unsigned xacterr : 1;
		unsigned bblerr : 1;
		unsigned frmovrun : 1;
		unsigned datatglerr : 1;
		unsigned reserved : 21;
	} b;
} hcintmsk_data_t;

/** OTG Host Interface Structure.
 *
 * The OTG Host Interface Structure structure contains information
 * needed to manage the DWC_otg controller acting in host mode. It
 * represents the programming view of the host-specific aspects of the
 * controller.
 */
typedef struct dwc_otg_host_if
{
	/** Host Global Registers starting at offset 400h.*/
	dwc_otg_host_global_regs_t *host_global_regs;
#define DWC_OTG_HOST_GLOBAL_REG_OFFSET 0x400

	/** Host Port 0 Control and Status Register */
	volatile uint32_t *hprt0;
#define DWC_OTG_HOST_PORT_REGS_OFFSET 0x440


	/** Host Channel Specific Registers at offsets 500h-5FCh. */
	dwc_otg_hc_regs_t *hc_regs[MAX_EPS_CHANNELS];
#define DWC_OTG_HOST_CHAN_REGS_OFFSET 0x500
#define DWC_OTG_CHAN_REGS_OFFSET 0x20


	/* Host configuration information */
	/** Number of Host Channels (range: 1-16) */
	uint8_t	 num_host_channels;
	/** Periodic EPs supported (0: no, 1: yes) */
	uint8_t	 perio_eps_supported;
	/** Periodic Tx FIFO Size (Only 1 host periodic Tx FIFO) */
	uint16_t perio_tx_fifo_size;

} dwc_otg_host_if_t;


/**
 * This union represents the bit fields in the Power and Clock Gating Control
 * Register. Read the register into the <i>d32</i> member then set/clear the
 * bits using the <i>b</i>it elements.
 */
typedef union pcgcctl_data
{
	/** raw register data */
	uint32_t d32;

	/** register bits */
	struct
	{
		/** Stop Pclk */
		unsigned stoppclk : 1;
		/** Gate Hclk */
		unsigned gatehclk : 1;
		/** Power Clamp */
		unsigned pwrclmp : 1;
		/** Reset Power Down Modules */
		unsigned rstpdwnmodule : 1;
		/** PHY Suspended */
		unsigned physuspended : 1;

		unsigned reserved : 27;
	} b;
} pcgcctl_data_t;

#define DWC_OTG_EP_TYPE_CONTROL    0
#define DWC_OTG_EP_TYPE_ISOC       1
#define DWC_OTG_EP_TYPE_BULK       2
#define DWC_OTG_EP_TYPE_INTR       3


int dwc_core_init(void);

static void dwc_otg_core_init(void);
static int  dwc_otg_pcd_init(void);
static void dwc_otg_core_reset(void);
static void dwc_otg_enable_common_interrupts(void);
static void dwc_otg_enable_device_interrupts(void);
static void dwc_otg_enable_global_interrupts(void);
static void dwc_otg_core_dev_init(void);
static void dwc_otg_flush_tx_fifo( const int _num ) ;
static void dwc_otg_flush_rx_fifo(void) ;
int dwc_otg_ep_req_start(pcd_struct_t * _pcd,int ep_num);
void dwc_otg_ep_start_transfer(dwc_ep_t *_ep);
static void dwc_otg_bulk_ep_activate(dwc_ep_t *ep);
void dwc_otg_power_off_phy(void);
void dwc_otg_pullup(int is_on);

#endif