/*
 * R8A66597 HCD (Host Controller Driver)
 *
 * Copyright (C) 2006-2007 Renesas Solutions Corp.
 * Portions Copyright (C) 2004 Psion Teklogix (for NetBook PRO)
 * Portions Copyright (C) 2004-2005 David Brownell
 * Portions Copyright (C) 1999 Roman Weissgaerber
 *
 * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
 *
 * 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; version 2 of the License.
 *
 * 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 St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#ifndef __R8A66597_H__
#define __R8A66597_H__

#define SYSCFG0		0x00
#define SYSCFG1		0x02
#define SYSSTS0		0x04
#define SYSSTS1		0x06
#define DVSTCTR0	0x08
#define DVSTCTR1	0x0A
#define TESTMODE	0x0C
#define PINCFG		0x0E
#define DMA0CFG		0x10
#define DMA1CFG		0x12
#define CFIFO		0x14
#define D0FIFO		0x18
#define D1FIFO		0x1C
#define CFIFOSEL	0x20
#define CFIFOCTR	0x22
#define CFIFOSIE	0x24
#define D0FIFOSEL	0x28
#define D0FIFOCTR	0x2A
#define D1FIFOSEL	0x2C
#define D1FIFOCTR	0x2E
#define INTENB0		0x30
#define INTENB1		0x32
#define INTENB2		0x34
#define BRDYENB		0x36
#define NRDYENB		0x38
#define BEMPENB		0x3A
#define SOFCFG		0x3C
#define INTSTS0		0x40
#define INTSTS1		0x42
#define INTSTS2		0x44
#define BRDYSTS		0x46
#define NRDYSTS		0x48
#define BEMPSTS		0x4A
#define FRMNUM		0x4C
#define UFRMNUM		0x4E
#define USBADDR		0x50
#define USBREQ		0x54
#define USBVAL		0x56
#define USBINDX		0x58
#define USBLENG		0x5A
#define DCPCFG		0x5C
#define DCPMAXP		0x5E
#define DCPCTR		0x60
#define PIPESEL		0x64
#define PIPECFG		0x68
#define PIPEBUF		0x6A
#define PIPEMAXP	0x6C
#define PIPEPERI	0x6E
#define PIPE1CTR	0x70
#define PIPE2CTR	0x72
#define PIPE3CTR	0x74
#define PIPE4CTR	0x76
#define PIPE5CTR	0x78
#define PIPE6CTR	0x7A
#define PIPE7CTR	0x7C
#define PIPE8CTR	0x7E
#define PIPE9CTR	0x80
#define PIPE1TRE	0x90
#define PIPE1TRN	0x92
#define PIPE2TRE	0x94
#define PIPE2TRN	0x96
#define PIPE3TRE	0x98
#define PIPE3TRN	0x9A
#define PIPE4TRE	0x9C
#define	PIPE4TRN	0x9E
#define	PIPE5TRE	0xA0
#define	PIPE5TRN	0xA2
#define DEVADD0		0xD0
#define DEVADD1		0xD2
#define DEVADD2		0xD4
#define DEVADD3		0xD6
#define DEVADD4		0xD8
#define DEVADD5		0xDA
#define DEVADD6		0xDC
#define DEVADD7		0xDE
#define DEVADD8		0xE0
#define DEVADD9		0xE2
#define DEVADDA		0xE4

/* System Configuration Control Register */
#define	XTAL		0xC000	/* b15-14: Crystal selection */
#define	  XTAL48	 0x8000	  /* 48MHz */
#define	  XTAL24	 0x4000	  /* 24MHz */
#define	  XTAL12	 0x0000	  /* 12MHz */
#define	XCKE		0x2000	/* b13: External clock enable */
#define	PLLC		0x0800	/* b11: PLL control */
#define	SCKE		0x0400	/* b10: USB clock enable */
#define	PCSDIS		0x0200	/* b9: not CS wakeup */
#define	LPSME		0x0100	/* b8: Low power sleep mode */
#define	HSE		0x0080	/* b7: Hi-speed enable */
#define	DCFM		0x0040	/* b6: Controller function select  */
#define	DRPD		0x0020	/* b5: D+/- pull down control */
#define	DPRPU		0x0010	/* b4: D+ pull up control */
#define	USBE		0x0001	/* b0: USB module operation enable */

/* System Configuration Status Register */
#define	OVCBIT		0x8000	/* b15-14: Over-current bit */
#define	OVCMON		0xC000	/* b15-14: Over-current monitor */
#define	SOFEA		0x0020	/* b5: SOF monitor */
#define	IDMON		0x0004	/* b3: ID-pin monitor */
#define	LNST		0x0003	/* b1-0: D+, D- line status */
#define	  SE1		 0x0003	  /* SE1 */
#define	  FS_KSTS	 0x0002	  /* Full-Speed K State */
#define	  FS_JSTS	 0x0001	  /* Full-Speed J State */
#define	  LS_JSTS	 0x0002	  /* Low-Speed J State */
#define	  LS_KSTS	 0x0001	  /* Low-Speed K State */
#define	  SE0		 0x0000	  /* SE0 */

/* Device State Control Register */
#define	EXTLP0		0x0400	/* b10: External port */
#define	VBOUT		0x0200	/* b9: VBUS output */
#define	WKUP		0x0100	/* b8: Remote wakeup */
#define	RWUPE		0x0080	/* b7: Remote wakeup sense */
#define	USBRST		0x0040	/* b6: USB reset enable */
#define	RESUME		0x0020	/* b5: Resume enable */
#define	UACT		0x0010	/* b4: USB bus enable */
#define	RHST		0x0007	/* b1-0: Reset handshake status */
#define	  HSPROC	 0x0004	  /* HS handshake is processing */
#define	  HSMODE	 0x0003	  /* Hi-Speed mode */
#define	  FSMODE	 0x0002	  /* Full-Speed mode */
#define	  LSMODE	 0x0001	  /* Low-Speed mode */
#define	  UNDECID	 0x0000	  /* Undecided */

/* Test Mode Register */
#define	UTST			0x000F	/* b3-0: Test select */
#define	  H_TST_PACKET		 0x000C	  /* HOST TEST Packet */
#define	  H_TST_SE0_NAK		 0x000B	  /* HOST TEST SE0 NAK */
#define	  H_TST_K		 0x000A	  /* HOST TEST K */
#define	  H_TST_J		 0x0009	  /* HOST TEST J */
#define	  H_TST_NORMAL		 0x0000	  /* HOST Normal Mode */
#define	  P_TST_PACKET		 0x0004	  /* PERI TEST Packet */
#define	  P_TST_SE0_NAK		 0x0003	  /* PERI TEST SE0 NAK */
#define	  P_TST_K		 0x0002	  /* PERI TEST K */
#define	  P_TST_J		 0x0001	  /* PERI TEST J */
#define	  P_TST_NORMAL		 0x0000	  /* PERI Normal Mode */

/* Data Pin Configuration Register */
#define	LDRV			0x8000	/* b15: Drive Current Adjust */
#define	  VIF1			  0x0000		/* VIF = 1.8V */
#define	  VIF3			  0x8000		/* VIF = 3.3V */
#define	INTA			0x0001	/* b1: USB INT-pin active */

/* DMAx Pin Configuration Register */
#define	DREQA			0x4000	/* b14: Dreq active select */
#define	BURST			0x2000	/* b13: Burst mode */
#define	DACKA			0x0400	/* b10: Dack active select */
#define	DFORM			0x0380	/* b9-7: DMA mode select */
#define	  CPU_ADR_RD_WR		 0x0000	  /* Address + RD/WR mode (CPU bus) */
#define	  CPU_DACK_RD_WR	 0x0100	  /* DACK + RD/WR mode (CPU bus) */
#define	  CPU_DACK_ONLY		 0x0180	  /* DACK only mode (CPU bus) */
#define	  SPLIT_DACK_ONLY	 0x0200	  /* DACK only mode (SPLIT bus) */
#define	DENDA			0x0040	/* b6: Dend active select */
#define	PKTM			0x0020	/* b5: Packet mode */
#define	DENDE			0x0010	/* b4: Dend enable */
#define	OBUS			0x0004	/* b2: OUTbus mode */

/* CFIFO/DxFIFO Port Select Register */
#define	RCNT		0x8000	/* b15: Read count mode */
#define	REW		0x4000	/* b14: Buffer rewind */
#define	DCLRM		0x2000	/* b13: DMA buffer clear mode */
#define	DREQE		0x1000	/* b12: DREQ output enable */
#if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
#define	MBW		0x0800
#else
#define	MBW		0x0400	/* b10: Maximum bit width for FIFO access */
#endif
#define	  MBW_8		 0x0000	  /*  8bit */
#define	  MBW_16	 0x0400	  /* 16bit */
#define	BIGEND		0x0100	/* b8: Big endian mode */
#define	  BYTE_LITTLE	 0x0000		/* little dendian */
#define	  BYTE_BIG	 0x0100		/* big endifan */
#define	ISEL		0x0020	/* b5: DCP FIFO port direction select */
#define	CURPIPE		0x000F	/* b2-0: PIPE select */

/* CFIFO/DxFIFO Port Control Register */
#define	BVAL		0x8000	/* b15: Buffer valid flag */
#define	BCLR		0x4000	/* b14: Buffer clear */
#define	FRDY		0x2000	/* b13: FIFO ready */
#define	DTLN		0x0FFF	/* b11-0: FIFO received data length */

/* Interrupt Enable Register 0 */
#define	VBSE	0x8000	/* b15: VBUS interrupt */
#define	RSME	0x4000	/* b14: Resume interrupt */
#define	SOFE	0x2000	/* b13: Frame update interrupt */
#define	DVSE	0x1000	/* b12: Device state transition interrupt */
#define	CTRE	0x0800	/* b11: Control transfer stage transition interrupt */
#define	BEMPE	0x0400	/* b10: Buffer empty interrupt */
#define	NRDYE	0x0200	/* b9: Buffer not ready interrupt */
#define	BRDYE	0x0100	/* b8: Buffer ready interrupt */

/* Interrupt Enable Register 1 */
#define	OVRCRE		0x8000	/* b15: Over-current interrupt */
#define	BCHGE		0x4000	/* b14: USB us chenge interrupt */
#define	DTCHE		0x1000	/* b12: Detach sense interrupt */
#define	ATTCHE		0x0800	/* b11: Attach sense interrupt */
#define	EOFERRE		0x0040	/* b6: EOF error interrupt */
#define	SIGNE		0x0020	/* b5: SETUP IGNORE interrupt */
#define	SACKE		0x0010	/* b4: SETUP ACK interrupt */

/* BRDY Interrupt Enable/Status Register */
#define	BRDY9		0x0200	/* b9: PIPE9 */
#define	BRDY8		0x0100	/* b8: PIPE8 */
#define	BRDY7		0x0080	/* b7: PIPE7 */
#define	BRDY6		0x0040	/* b6: PIPE6 */
#define	BRDY5		0x0020	/* b5: PIPE5 */
#define	BRDY4		0x0010	/* b4: PIPE4 */
#define	BRDY3		0x0008	/* b3: PIPE3 */
#define	BRDY2		0x0004	/* b2: PIPE2 */
#define	BRDY1		0x0002	/* b1: PIPE1 */
#define	BRDY0		0x0001	/* b1: PIPE0 */

/* NRDY Interrupt Enable/Status Register */
#define	NRDY9		0x0200	/* b9: PIPE9 */
#define	NRDY8		0x0100	/* b8: PIPE8 */
#define	NRDY7		0x0080	/* b7: PIPE7 */
#define	NRDY6		0x0040	/* b6: PIPE6 */
#define	NRDY5		0x0020	/* b5: PIPE5 */
#define	NRDY4		0x0010	/* b4: PIPE4 */
#define	NRDY3		0x0008	/* b3: PIPE3 */
#define	NRDY2		0x0004	/* b2: PIPE2 */
#define	NRDY1		0x0002	/* b1: PIPE1 */
#define	NRDY0		0x0001	/* b1: PIPE0 */

/* BEMP Interrupt Enable/Status Register */
#define	BEMP9		0x0200	/* b9: PIPE9 */
#define	BEMP8		0x0100	/* b8: PIPE8 */
#define	BEMP7		0x0080	/* b7: PIPE7 */
#define	BEMP6		0x0040	/* b6: PIPE6 */
#define	BEMP5		0x0020	/* b5: PIPE5 */
#define	BEMP4		0x0010	/* b4: PIPE4 */
#define	BEMP3		0x0008	/* b3: PIPE3 */
#define	BEMP2		0x0004	/* b2: PIPE2 */
#define	BEMP1		0x0002	/* b1: PIPE1 */
#define	BEMP0		0x0001	/* b0: PIPE0 */

/* SOF Pin Configuration Register */
#define	TRNENSEL	0x0100	/* b8: Select transaction enable period */
#define	BRDYM		0x0040	/* b6: BRDY clear timing */
#define	INTL		0x0020	/* b5: Interrupt sense select */
#define	EDGESTS		0x0010	/* b4:  */
#define	SOFMODE		0x000C	/* b3-2: SOF pin select */
#define	  SOF_125US	 0x0008	  /* SOF OUT 125us Frame Signal */
#define	  SOF_1MS	 0x0004	  /* SOF OUT 1ms Frame Signal */
#define	  SOF_DISABLE	 0x0000	  /* SOF OUT Disable */

/* Interrupt Status Register 0 */
#define	VBINT	0x8000	/* b15: VBUS interrupt */
#define	RESM	0x4000	/* b14: Resume interrupt */
#define	SOFR	0x2000	/* b13: SOF frame update interrupt */
#define	DVST	0x1000	/* b12: Device state transition interrupt */
#define	CTRT	0x0800	/* b11: Control transfer stage transition interrupt */
#define	BEMP	0x0400	/* b10: Buffer empty interrupt */
#define	NRDY	0x0200	/* b9: Buffer not ready interrupt */
#define	BRDY	0x0100	/* b8: Buffer ready interrupt */
#define	VBSTS	0x0080	/* b7: VBUS input port */
#define	DVSQ	0x0070	/* b6-4: Device state */
#define	  DS_SPD_CNFG	 0x0070	  /* Suspend Configured */
#define	  DS_SPD_ADDR	 0x0060	  /* Suspend Address */
#define	  DS_SPD_DFLT	 0x0050	  /* Suspend Default */
#define	  DS_SPD_POWR	 0x0040	  /* Suspend Powered */
#define	  DS_SUSP	 0x0040	  /* Suspend */
#define	  DS_CNFG	 0x0030	  /* Configured */
#define	  DS_ADDS	 0x0020	  /* Address */
#define	  DS_DFLT	 0x0010	  /* Default */
#define	  DS_POWR	 0x0000	  /* Powered */
#define	DVSQS		0x0030	/* b5-4: Device state */
#define	VALID		0x0008	/* b3: Setup packet detected flag */
#define	CTSQ		0x0007	/* b2-0: Control transfer stage */
#define	  CS_SQER	 0x0006	  /* Sequence error */
#define	  CS_WRND	 0x0005	  /* Control write nodata status stage */
#define	  CS_WRSS	 0x0004	  /* Control write status stage */
#define	  CS_WRDS	 0x0003	  /* Control write data stage */
#define	  CS_RDSS	 0x0002	  /* Control read status stage */
#define	  CS_RDDS	 0x0001	  /* Control read data stage */
#define	  CS_IDST	 0x0000	  /* Idle or setup stage */

/* Interrupt Status Register 1 */
#define	OVRCR		0x8000	/* b15: Over-current interrupt */
#define	BCHG		0x4000	/* b14: USB bus chenge interrupt */
#define	DTCH		0x1000	/* b12: Detach sense interrupt */
#define	ATTCH		0x0800	/* b11: Attach sense interrupt */
#define	EOFERR		0x0040	/* b6: EOF-error interrupt */
#define	SIGN		0x0020	/* b5: Setup ignore interrupt */
#define	SACK		0x0010	/* b4: Setup acknowledge interrupt */

/* Frame Number Register */
#define	OVRN		0x8000	/* b15: Overrun error */
#define	CRCE		0x4000	/* b14: Received data error */
#define	FRNM		0x07FF	/* b10-0: Frame number */

/* Micro Frame Number Register */
#define	UFRNM		0x0007	/* b2-0: Micro frame number */

/* Default Control Pipe Maxpacket Size Register */
/* Pipe Maxpacket Size Register */
#define	DEVSEL	0xF000	/* b15-14: Device address select */
#define	MAXP	0x007F	/* b6-0: Maxpacket size of default control pipe */

/* Default Control Pipe Control Register */
#define	BSTS		0x8000	/* b15: Buffer status */
#define	SUREQ		0x4000	/* b14: Send USB request  */
#define	CSCLR		0x2000	/* b13: complete-split status clear */
#define	CSSTS		0x1000	/* b12: complete-split status */
#define	SUREQCLR	0x0800	/* b11: stop setup request */
#define	SQCLR		0x0100	/* b8: Sequence toggle bit clear */
#define	SQSET		0x0080	/* b7: Sequence toggle bit set */
#define	SQMON		0x0040	/* b6: Sequence toggle bit monitor */
#define	PBUSY		0x0020	/* b5: pipe busy */
#define	PINGE		0x0010	/* b4: ping enable */
#define	CCPL		0x0004	/* b2: Enable control transfer complete */
#define	PID		0x0003	/* b1-0: Response PID */
#define	  PID_STALL11	 0x0003	  /* STALL */
#define	  PID_STALL	 0x0002	  /* STALL */
#define	  PID_BUF	 0x0001	  /* BUF */
#define	  PID_NAK	 0x0000	  /* NAK */

/* Pipe Window Select Register */
#define	PIPENM		0x0007	/* b2-0: Pipe select */

/* Pipe Configuration Register */
#define	R8A66597_TYP	0xC000	/* b15-14: Transfer type */
#define	  R8A66597_ISO	 0xC000		  /* Isochronous */
#define	  R8A66597_INT	 0x8000		  /* Interrupt */
#define	  R8A66597_BULK	 0x4000		  /* Bulk */
#define	R8A66597_BFRE	0x0400	/* b10: Buffer ready interrupt mode select */
#define	R8A66597_DBLB	0x0200	/* b9: Double buffer mode select */
#define	R8A66597_CNTMD	0x0100	/* b8: Continuous transfer mode select */
#define	R8A66597_SHTNAK	0x0080	/* b7: Transfer end NAK */
#define	R8A66597_DIR	0x0010	/* b4: Transfer direction select */
#define	R8A66597_EPNUM	0x000F	/* b3-0: Eendpoint number select */

/* Pipe Buffer Configuration Register */
#define	BUFSIZE		0x7C00	/* b14-10: Pipe buffer size */
#define	BUFNMB		0x007F	/* b6-0: Pipe buffer number */
#define	PIPE0BUF	256
#define	PIPExBUF	64

/* Pipe Maxpacket Size Register */
#define	MXPS		0x07FF	/* b10-0: Maxpacket size */

/* Pipe Cycle Configuration Register */
#define	IFIS	0x1000	/* b12: Isochronous in-buffer flush mode select */
#define	IITV	0x0007	/* b2-0: Isochronous interval */

/* Pipex Control Register */
#define	BSTS	0x8000	/* b15: Buffer status */
#define	INBUFM	0x4000	/* b14: IN buffer monitor (Only for PIPE1 to 5) */
#define	CSCLR	0x2000	/* b13: complete-split status clear */
#define	CSSTS	0x1000	/* b12: complete-split status */
#define	ATREPM	0x0400	/* b10: Auto repeat mode */
#define	ACLRM	0x0200	/* b9: Out buffer auto clear mode */
#define	SQCLR	0x0100	/* b8: Sequence toggle bit clear */
#define	SQSET	0x0080	/* b7: Sequence toggle bit set */
#define	SQMON	0x0040	/* b6: Sequence toggle bit monitor */
#define	PBUSY	0x0020	/* b5: pipe busy */
#define	PID	0x0003	/* b1-0: Response PID */

/* PIPExTRE */
#define	TRENB		0x0200	/* b9: Transaction counter enable */
#define	TRCLR		0x0100	/* b8: Transaction counter clear */

/* PIPExTRN */
#define	TRNCNT		0xFFFF	/* b15-0: Transaction counter */

/* DEVADDx */
#define	UPPHUB		0x7800
#define	HUBPORT		0x0700
#define	USBSPD		0x00C0
#define	RTPORT		0x0001

#define R8A66597_MAX_NUM_PIPE		10
#define R8A66597_BUF_BSIZE		8
#define R8A66597_MAX_DEVICE		10
#if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
#define R8A66597_MAX_ROOT_HUB		1
#else
#define R8A66597_MAX_ROOT_HUB		2
#endif
#define R8A66597_MAX_SAMPLING		5
#define R8A66597_RH_POLL_TIME		10
#define R8A66597_MAX_DMA_CHANNEL	2
#define R8A66597_PIPE_NO_DMA		R8A66597_MAX_DMA_CHANNEL
#define check_bulk_or_isoc(pipenum)	((pipenum >= 1 && pipenum <= 5))
#define check_interrupt(pipenum)	((pipenum >= 6 && pipenum <= 9))
#define make_devsel(addr)		(addr << 12)

struct r8a66597_pipe_info {
	unsigned long timer_interval;
	u16 pipenum;
	u16 address;	/* R8A66597 HCD usb address */
	u16 epnum;
	u16 maxpacket;
	u16 type;
	u16 bufnum;
	u16 buf_bsize;
	u16 interval;
	u16 dir_in;
};

struct r8a66597_pipe {
	struct r8a66597_pipe_info info;

	unsigned long fifoaddr;
	unsigned long fifosel;
	unsigned long fifoctr;
	unsigned long pipectr;
	unsigned long pipetre;
	unsigned long pipetrn;
};

struct r8a66597_td {
	struct r8a66597_pipe *pipe;
	struct urb *urb;
	struct list_head queue;

	u16 type;
	u16 pipenum;
	int iso_cnt;

	u16 address;		/* R8A66597's USB address */
	u16 maxpacket;

	unsigned zero_packet:1;
	unsigned short_packet:1;
	unsigned set_address:1;
};

struct r8a66597_device {
	u16	address;	/* R8A66597's USB address */
	u16	hub_port;
	u16	root_port;

	unsigned short ep_in_toggle;
	unsigned short ep_out_toggle;
	unsigned char pipe_cnt[R8A66597_MAX_NUM_PIPE];
	unsigned char dma_map;

	enum usb_device_state state;

	struct usb_device *udev;
	int usb_address;
	struct list_head device_list;
};

struct r8a66597_root_hub {
	u32 port;
	u16 old_syssts;
	int scount;

	struct r8a66597_device	*dev;
};

struct r8a66597 {
	spinlock_t lock;
	unsigned long reg;

	struct r8a66597_device		device0;
	struct r8a66597_root_hub	root_hub[R8A66597_MAX_ROOT_HUB];
	struct list_head		pipe_queue[R8A66597_MAX_NUM_PIPE];

	struct timer_list rh_timer;
	struct timer_list td_timer[R8A66597_MAX_NUM_PIPE];
	struct timer_list interval_timer[R8A66597_MAX_NUM_PIPE];

	unsigned short address_map;
	unsigned short timeout_map;
	unsigned short interval_map;
	unsigned char pipe_cnt[R8A66597_MAX_NUM_PIPE];
	unsigned char dma_map;

	struct list_head child_device;
	unsigned long child_connect_map[4];
};

static inline struct r8a66597 *hcd_to_r8a66597(struct usb_hcd *hcd)
{
	return (struct r8a66597 *)(hcd->hcd_priv);
}

static inline struct usb_hcd *r8a66597_to_hcd(struct r8a66597 *r8a66597)
{
	return container_of((void *)r8a66597, struct usb_hcd, hcd_priv);
}

static inline struct r8a66597_td *r8a66597_get_td(struct r8a66597 *r8a66597,
						  u16 pipenum)
{
	if (unlikely(list_empty(&r8a66597->pipe_queue[pipenum])))
		return NULL;

	return list_entry(r8a66597->pipe_queue[pipenum].next,
			  struct r8a66597_td, queue);
}

static inline struct urb *r8a66597_get_urb(struct r8a66597 *r8a66597,
					   u16 pipenum)
{
	struct r8a66597_td *td;

	td = r8a66597_get_td(r8a66597, pipenum);
	return (td ? td->urb : NULL);
}

static inline u16 r8a66597_read(struct r8a66597 *r8a66597, unsigned long offset)
{
	return inw(r8a66597->reg + offset);
}

static inline void r8a66597_read_fifo(struct r8a66597 *r8a66597,
				      unsigned long offset, u16 *buf,
				      int len)
{
#if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
	unsigned long fifoaddr = r8a66597->reg + offset;
	unsigned long count;

	count = len / 4;
	insl(fifoaddr, buf, count);

	if (len & 0x00000003) {
		unsigned long tmp = inl(fifoaddr);
		memcpy((unsigned char *)buf + count * 4, &tmp, len & 0x03);
	}
#else
	len = (len + 1) / 2;
	insw(r8a66597->reg + offset, buf, len);
#endif
}

static inline void r8a66597_write(struct r8a66597 *r8a66597, u16 val,
				  unsigned long offset)
{
	outw(val, r8a66597->reg + offset);
}

static inline void r8a66597_write_fifo(struct r8a66597 *r8a66597,
				       unsigned long offset, u16 *buf,
				       int len)
{
	unsigned long fifoaddr = r8a66597->reg + offset;
#if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
	unsigned long count;
	unsigned char *pb;
	int i;

	count = len / 4;
	outsl(fifoaddr, buf, count);

	if (len & 0x00000003) {
		pb = (unsigned char *)buf + count * 4;
		for (i = 0; i < (len & 0x00000003); i++) {
			if (r8a66597_read(r8a66597, CFIFOSEL) & BIGEND)
				outb(pb[i], fifoaddr + i);
			else
				outb(pb[i], fifoaddr + 3 - i);
		}
	}
#else
	int odd = len & 0x0001;

	len = len / 2;
	outsw(fifoaddr, buf, len);
	if (unlikely(odd)) {
		buf = &buf[len];
		outb((unsigned char)*buf, fifoaddr);
	}
#endif
}

static inline void r8a66597_mdfy(struct r8a66597 *r8a66597,
				 u16 val, u16 pat, unsigned long offset)
{
	u16 tmp;
	tmp = r8a66597_read(r8a66597, offset);
	tmp = tmp & (~pat);
	tmp = tmp | val;
	r8a66597_write(r8a66597, tmp, offset);
}

#define r8a66597_bclr(r8a66597, val, offset)	\
			r8a66597_mdfy(r8a66597, 0, val, offset)
#define r8a66597_bset(r8a66597, val, offset)	\
			r8a66597_mdfy(r8a66597, val, 0, offset)

static inline unsigned long get_syscfg_reg(int port)
{
	return port == 0 ? SYSCFG0 : SYSCFG1;
}

static inline unsigned long get_syssts_reg(int port)
{
	return port == 0 ? SYSSTS0 : SYSSTS1;
}

static inline unsigned long get_dvstctr_reg(int port)
{
	return port == 0 ? DVSTCTR0 : DVSTCTR1;
}

static inline unsigned long get_dmacfg_reg(int port)
{
	return port == 0 ? DMA0CFG : DMA1CFG;
}

static inline unsigned long get_intenb_reg(int port)
{
	return port == 0 ? INTENB1 : INTENB2;
}

static inline unsigned long get_intsts_reg(int port)
{
	return port == 0 ? INTSTS1 : INTSTS2;
}

static inline u16 get_rh_usb_speed(struct r8a66597 *r8a66597, int port)
{
	unsigned long dvstctr_reg = get_dvstctr_reg(port);

	return r8a66597_read(r8a66597, dvstctr_reg) & RHST;
}

static inline void r8a66597_port_power(struct r8a66597 *r8a66597, int port,
				       int power)
{
	unsigned long dvstctr_reg = get_dvstctr_reg(port);

	if (power)
		r8a66597_bset(r8a66597, VBOUT, dvstctr_reg);
	else
		r8a66597_bclr(r8a66597, VBOUT, dvstctr_reg);
}

#define get_pipectr_addr(pipenum)	(PIPE1CTR + (pipenum - 1) * 2)
#define get_pipetre_addr(pipenum)	(PIPE1TRE + (pipenum - 1) * 4)
#define get_pipetrn_addr(pipenum)	(PIPE1TRN + (pipenum - 1) * 4)
#define get_devadd_addr(address)	(DEVADD0 + address * 2)

#define enable_irq_ready(r8a66597, pipenum)	\
	enable_pipe_irq(r8a66597, pipenum, BRDYENB)
#define disable_irq_ready(r8a66597, pipenum)	\
	disable_pipe_irq(r8a66597, pipenum, BRDYENB)
#define enable_irq_empty(r8a66597, pipenum)	\
	enable_pipe_irq(r8a66597, pipenum, BEMPENB)
#define disable_irq_empty(r8a66597, pipenum)	\
	disable_pipe_irq(r8a66597, pipenum, BEMPENB)
#define enable_irq_nrdy(r8a66597, pipenum)	\
	enable_pipe_irq(r8a66597, pipenum, NRDYENB)
#define disable_irq_nrdy(r8a66597, pipenum)	\
	disable_pipe_irq(r8a66597, pipenum, NRDYENB)

#endif	/* __R8A66597_H__ */