drivers/usb/host/imx21-hcd.h - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Macros and prototypes for i.MX21
  *
  * Copyright (C) 2006 Loping Dog Embedded Systems
  * Copyright (C) 2009 Martin Fuzzey
  * Originally written by Jay Monkman <jtm@lopingdog.com>
  * Ported to 2.6.30, debugged and enhanced by Martin Fuzzey
  */

 #ifndef __LINUX_IMX21_HCD_H__
 #define __LINUX_IMX21_HCD_H__

 #ifdef CONFIG_DYNAMIC_DEBUG
 #define DEBUG
 #endif

 #include <linux/platform_data/usb-mx2.h>

 #define NUM_ISO_ETDS 	2
 #define USB_NUM_ETD	32
 #define DMEM_SIZE   	4096

 /* Register definitions */
 #define USBOTG_HWMODE		0x00
 #define USBOTG_HWMODE_ANASDBEN		(1 << 14)
 #define USBOTG_HWMODE_OTGXCVR_SHIFT	6
 #define USBOTG_HWMODE_OTGXCVR_MASK	(3 << 6)
 #define USBOTG_HWMODE_OTGXCVR_TD_RD	(0 << 6)
 #define USBOTG_HWMODE_OTGXCVR_TS_RD	(2 << 6)
 #define USBOTG_HWMODE_OTGXCVR_TD_RS	(1 << 6)
 #define USBOTG_HWMODE_OTGXCVR_TS_RS	(3 << 6)
 #define USBOTG_HWMODE_HOSTXCVR_SHIFT	4
 #define USBOTG_HWMODE_HOSTXCVR_MASK	(3 << 4)
 #define USBOTG_HWMODE_HOSTXCVR_TD_RD	(0 << 4)
 #define USBOTG_HWMODE_HOSTXCVR_TS_RD	(2 << 4)
 #define USBOTG_HWMODE_HOSTXCVR_TD_RS	(1 << 4)
 #define USBOTG_HWMODE_HOSTXCVR_TS_RS	(3 << 4)
 #define USBOTG_HWMODE_CRECFG_MASK	(3 << 0)
 #define USBOTG_HWMODE_CRECFG_HOST	(1 << 0)
 #define USBOTG_HWMODE_CRECFG_FUNC	(2 << 0)
 #define USBOTG_HWMODE_CRECFG_HNP	(3 << 0)

 #define USBOTG_CINT_STAT	0x04
 #define USBOTG_CINT_STEN	0x08
 #define USBOTG_ASHNPINT			(1 << 5)
 #define USBOTG_ASFCINT			(1 << 4)
 #define USBOTG_ASHCINT			(1 << 3)
 #define USBOTG_SHNPINT			(1 << 2)
 #define USBOTG_FCINT			(1 << 1)
 #define USBOTG_HCINT			(1 << 0)

 #define USBOTG_CLK_CTRL		0x0c
 #define USBOTG_CLK_CTRL_FUNC		(1 << 2)
 #define USBOTG_CLK_CTRL_HST		(1 << 1)
 #define USBOTG_CLK_CTRL_MAIN		(1 << 0)

 #define USBOTG_RST_CTRL		0x10
 #define USBOTG_RST_RSTI2C		(1 << 15)
 #define USBOTG_RST_RSTCTRL		(1 << 5)
 #define USBOTG_RST_RSTFC		(1 << 4)
 #define USBOTG_RST_RSTFSKE		(1 << 3)
 #define USBOTG_RST_RSTRH		(1 << 2)
 #define USBOTG_RST_RSTHSIE		(1 << 1)
 #define USBOTG_RST_RSTHC		(1 << 0)

 #define USBOTG_FRM_INTVL    	0x14
 #define USBOTG_FRM_REMAIN   	0x18
 #define USBOTG_HNP_CSR	    	0x1c
 #define USBOTG_HNP_ISR	    	0x2c
 #define USBOTG_HNP_IEN	    	0x30

 #define USBOTG_I2C_TXCVR_REG(x)	(0x100 + (x))
 #define USBOTG_I2C_XCVR_DEVAD		0x118
 #define USBOTG_I2C_SEQ_OP_REG		0x119
 #define USBOTG_I2C_SEQ_RD_STARTAD	0x11a
 #define USBOTG_I2C_OP_CTRL_REG	     	0x11b
 #define USBOTG_I2C_SCLK_TO_SCK_HPER  	0x11e
 #define USBOTG_I2C_MASTER_INT_REG    	0x11f

 #define USBH_HOST_CTRL		0x80
 #define USBH_HOST_CTRL_HCRESET			(1 << 31)
 #define USBH_HOST_CTRL_SCHDOVR(x)		((x) << 16)
 #define USBH_HOST_CTRL_RMTWUEN			(1 << 4)
 #define USBH_HOST_CTRL_HCUSBSTE_RESET		(0 << 2)
 #define USBH_HOST_CTRL_HCUSBSTE_RESUME		(1 << 2)
 #define USBH_HOST_CTRL_HCUSBSTE_OPERATIONAL	(2 << 2)
 #define USBH_HOST_CTRL_HCUSBSTE_SUSPEND	(3 << 2)
 #define USBH_HOST_CTRL_CTLBLKSR_1		(0 << 0)
 #define USBH_HOST_CTRL_CTLBLKSR_2		(1 << 0)
 #define USBH_HOST_CTRL_CTLBLKSR_3		(2 << 0)
 #define USBH_HOST_CTRL_CTLBLKSR_4		(3 << 0)

 #define USBH_SYSISR		0x88
 #define USBH_SYSISR_PSCINT		(1 << 6)
 #define USBH_SYSISR_FMOFINT		(1 << 5)
 #define USBH_SYSISR_HERRINT		(1 << 4)
 #define USBH_SYSISR_RESDETINT		(1 << 3)
 #define USBH_SYSISR_SOFINT		(1 << 2)
 #define USBH_SYSISR_DONEINT		(1 << 1)
 #define USBH_SYSISR_SORINT		(1 << 0)

 #define USBH_SYSIEN	    	0x8c
 #define USBH_SYSIEN_PSCINT		(1 << 6)
 #define USBH_SYSIEN_FMOFINT		(1 << 5)
 #define USBH_SYSIEN_HERRINT		(1 << 4)
 #define USBH_SYSIEN_RESDETINT		(1 << 3)
 #define USBH_SYSIEN_SOFINT		(1 << 2)
 #define USBH_SYSIEN_DONEINT		(1 << 1)
 #define USBH_SYSIEN_SORINT		(1 << 0)

 #define USBH_XBUFSTAT	    	0x98
 #define USBH_YBUFSTAT	    	0x9c
 #define USBH_XYINTEN	    	0xa0
 #define USBH_XFILLSTAT	    	0xa8
 #define USBH_YFILLSTAT	    	0xac
 #define USBH_ETDENSET	    	0xc0
 #define USBH_ETDENCLR	    	0xc4
 #define USBH_IMMEDINT	    	0xcc
 #define USBH_ETDDONESTAT    	0xd0
 #define USBH_ETDDONEEN	    	0xd4
 #define USBH_FRMNUB	    	0xe0
 #define USBH_LSTHRESH	    	0xe4

 #define USBH_ROOTHUBA	    	0xe8
 #define USBH_ROOTHUBA_PWRTOGOOD_MASK	(0xff)
 #define USBH_ROOTHUBA_PWRTOGOOD_SHIFT	(24)
 #define USBH_ROOTHUBA_NOOVRCURP	(1 << 12)
 #define USBH_ROOTHUBA_OVRCURPM		(1 << 11)
 #define USBH_ROOTHUBA_DEVTYPE		(1 << 10)
 #define USBH_ROOTHUBA_PWRSWTMD		(1 << 9)
 #define USBH_ROOTHUBA_NOPWRSWT		(1 << 8)
 #define USBH_ROOTHUBA_NDNSTMPRT_MASK	(0xff)

 #define USBH_ROOTHUBB		0xec
 #define USBH_ROOTHUBB_PRTPWRCM(x)	(1 << ((x) + 16))
 #define USBH_ROOTHUBB_DEVREMOVE(x)	(1 << (x))

 #define USBH_ROOTSTAT		0xf0
 #define USBH_ROOTSTAT_CLRRMTWUE	(1 << 31)
 #define USBH_ROOTSTAT_OVRCURCHG	(1 << 17)
 #define USBH_ROOTSTAT_DEVCONWUE	(1 << 15)
 #define USBH_ROOTSTAT_OVRCURI		(1 << 1)
 #define USBH_ROOTSTAT_LOCPWRS		(1 << 0)

 #define USBH_PORTSTAT(x)	(0xf4 + ((x) * 4))
 #define USBH_PORTSTAT_PRTRSTSC		(1 << 20)
 #define USBH_PORTSTAT_OVRCURIC		(1 << 19)
 #define USBH_PORTSTAT_PRTSTATSC	(1 << 18)
 #define USBH_PORTSTAT_PRTENBLSC	(1 << 17)
 #define USBH_PORTSTAT_CONNECTSC	(1 << 16)
 #define USBH_PORTSTAT_LSDEVCON		(1 << 9)
 #define USBH_PORTSTAT_PRTPWRST		(1 << 8)
 #define USBH_PORTSTAT_PRTRSTST		(1 << 4)
 #define USBH_PORTSTAT_PRTOVRCURI	(1 << 3)
 #define USBH_PORTSTAT_PRTSUSPST	(1 << 2)
 #define USBH_PORTSTAT_PRTENABST	(1 << 1)
 #define USBH_PORTSTAT_CURCONST		(1 << 0)

 #define USB_DMAREV		0x800
 #define USB_DMAINTSTAT	    	0x804
 #define USB_DMAINTSTAT_EPERR		(1 << 1)
 #define USB_DMAINTSTAT_ETDERR		(1 << 0)

 #define USB_DMAINTEN	    	0x808
 #define USB_DMAINTEN_EPERRINTEN	(1 << 1)
 #define USB_DMAINTEN_ETDERRINTEN	(1 << 0)

 #define USB_ETDDMAERSTAT    	0x80c
 #define USB_EPDMAERSTAT	    	0x810
 #define USB_ETDDMAEN	    	0x820
 #define USB_EPDMAEN	    	0x824
 #define USB_ETDDMAXTEN	    	0x828
 #define USB_EPDMAXTEN	    	0x82c
 #define USB_ETDDMAENXYT	    	0x830
 #define USB_EPDMAENXYT	    	0x834
 #define USB_ETDDMABST4EN    	0x838
 #define USB_EPDMABST4EN	    	0x83c

 #define USB_MISCCONTROL	    	0x840
 #define USB_MISCCONTROL_ISOPREVFRM	(1 << 3)
 #define USB_MISCCONTROL_SKPRTRY	(1 << 2)
 #define USB_MISCCONTROL_ARBMODE	(1 << 1)
 #define USB_MISCCONTROL_FILTCC		(1 << 0)

 #define USB_ETDDMACHANLCLR  	0x848
 #define USB_EPDMACHANLCLR   	0x84c
 #define USB_ETDSMSA(x)	    	(0x900 + ((x) * 4))
 #define USB_EPSMSA(x)	    	(0x980 + ((x) * 4))
 #define USB_ETDDMABUFPTR(x) 	(0xa00 + ((x) * 4))
 #define USB_EPDMABUFPTR(x)  	(0xa80 + ((x) * 4))

 #define USB_ETD_DWORD(x, w)	(0x200 + ((x) * 16) + ((w) * 4))
 #define DW0_ADDRESS	0
 #define	DW0_ENDPNT	7
 #define	DW0_DIRECT	11
 #define	DW0_SPEED	13
 #define DW0_FORMAT	14
 #define DW0_MAXPKTSIZ	16
 #define DW0_HALTED	27
 #define	DW0_TOGCRY	28
 #define	DW0_SNDNAK	30

 #define DW1_XBUFSRTAD	0
 #define DW1_YBUFSRTAD	16

 #define DW2_RTRYDELAY	0
 #define DW2_POLINTERV	0
 #define DW2_STARTFRM	0
 #define DW2_RELPOLPOS	8
 #define DW2_DIRPID	16
 #define	DW2_BUFROUND	18
 #define DW2_DELAYINT	19
 #define DW2_DATATOG	22
 #define DW2_ERRORCNT	24
 #define	DW2_COMPCODE	28

 #define DW3_TOTBYECNT	0
 #define DW3_PKTLEN0	0
 #define DW3_COMPCODE0	12
 #define DW3_PKTLEN1	16
 #define DW3_BUFSIZE	21
 #define DW3_COMPCODE1	28

 #define USBCTRL		    	0x600
 #define USBCTRL_I2C_WU_INT_STAT	(1 << 27)
 #define USBCTRL_OTG_WU_INT_STAT	(1 << 26)
 #define USBCTRL_HOST_WU_INT_STAT	(1 << 25)
 #define USBCTRL_FNT_WU_INT_STAT	(1 << 24)
 #define USBCTRL_I2C_WU_INT_EN		(1 << 19)
 #define USBCTRL_OTG_WU_INT_EN		(1 << 18)
 #define USBCTRL_HOST_WU_INT_EN		(1 << 17)
 #define USBCTRL_FNT_WU_INT_EN		(1 << 16)
 #define USBCTRL_OTC_RCV_RXDP		(1 << 13)
 #define USBCTRL_HOST1_BYP_TLL		(1 << 12)
 #define USBCTRL_OTG_BYP_VAL(x)		((x) << 10)
 #define USBCTRL_HOST1_BYP_VAL(x)	((x) << 8)
 #define USBCTRL_OTG_PWR_MASK		(1 << 6)
 #define USBCTRL_HOST1_PWR_MASK		(1 << 5)
 #define USBCTRL_HOST2_PWR_MASK		(1 << 4)
 #define USBCTRL_USB_BYP			(1 << 2)
 #define USBCTRL_HOST1_TXEN_OE		(1 << 1)

 #define USBOTG_DMEM		0x1000

 /* Values in TD blocks */
 #define TD_DIR_SETUP	    0
 #define TD_DIR_OUT	    1
 #define TD_DIR_IN	    2
 #define TD_FORMAT_CONTROL   0
 #define TD_FORMAT_ISO	    1
 #define TD_FORMAT_BULK	    2
 #define TD_FORMAT_INT	    3
 #define TD_TOGGLE_CARRY	    0
 #define TD_TOGGLE_DATA0	    2
 #define TD_TOGGLE_DATA1	    3

 /* control transfer states */
 #define US_CTRL_SETUP	2
 #define US_CTRL_DATA	1
 #define US_CTRL_ACK	0

 /* bulk transfer main state and 0-length packet */
 #define US_BULK		1
 #define US_BULK0	0

 /*ETD format description*/
 #define IMX_FMT_CTRL   0x0
 #define IMX_FMT_ISO    0x1
 #define IMX_FMT_BULK   0x2
 #define IMX_FMT_INT    0x3

 static char fmt_urb_to_etd[4] = {
 /*PIPE_ISOCHRONOUS*/ IMX_FMT_ISO,
 /*PIPE_INTERRUPT*/ IMX_FMT_INT,
 /*PIPE_CONTROL*/ IMX_FMT_CTRL,
 /*PIPE_BULK*/ IMX_FMT_BULK
 };

 /* condition (error) CC codes and mapping (OHCI like) */

 #define TD_CC_NOERROR		0x00
 #define TD_CC_CRC		0x01
 #define TD_CC_BITSTUFFING	0x02
 #define TD_CC_DATATOGGLEM	0x03
 #define TD_CC_STALL		0x04
 #define TD_DEVNOTRESP		0x05
 #define TD_PIDCHECKFAIL		0x06
 /*#define TD_UNEXPECTEDPID	0x07 - reserved, not active on MX2*/
 #define TD_DATAOVERRUN		0x08
 #define TD_DATAUNDERRUN		0x09
 #define TD_BUFFEROVERRUN	0x0C
 #define TD_BUFFERUNDERRUN	0x0D
 #define	TD_SCHEDULEOVERRUN	0x0E
 #define TD_NOTACCESSED		0x0F

 static const int cc_to_error[16] = {
 	/* No  Error  */ 0,
 	/* CRC Error  */ -EILSEQ,
 	/* Bit Stuff  */ -EPROTO,
 	/* Data Togg  */ -EILSEQ,
 	/* Stall      */ -EPIPE,
 	/* DevNotResp */ -ETIMEDOUT,
 	/* PIDCheck   */ -EPROTO,
 	/* UnExpPID   */ -EPROTO,
 	/* DataOver   */ -EOVERFLOW,
 	/* DataUnder  */ -EREMOTEIO,
 	/* (for hw)   */ -EIO,
 	/* (for hw)   */ -EIO,
 	/* BufferOver */ -ECOMM,
 	/* BuffUnder  */ -ENOSR,
 	/* (for HCD)  */ -ENOSPC,
 	/* (for HCD)  */ -EALREADY
 };

 /* HCD data associated with a usb core URB */
 struct urb_priv {
 	struct urb *urb;
 	struct usb_host_endpoint *ep;
 	int active;
 	int state;
 	struct td *isoc_td;
 	int isoc_remaining;
 	int isoc_status;
 };

 /* HCD data associated with a usb core endpoint */
 struct ep_priv {
 	struct usb_host_endpoint *ep;
 	struct list_head td_list;
 	struct list_head queue;
 	int etd[NUM_ISO_ETDS];
 	int waiting_etd;
 };

 /* isoc packet */
 struct td {
 	struct list_head list;
 	struct urb *urb;
 	struct usb_host_endpoint *ep;
 	dma_addr_t dma_handle;
 	void *cpu_buffer;
 	int len;
 	int frame;
 	int isoc_index;
 };

 /* HCD data associated with a hardware ETD */
 struct etd_priv {
 	struct usb_host_endpoint *ep;
 	struct urb *urb;
 	struct td *td;
 	struct list_head queue;
 	dma_addr_t dma_handle;
 	void *cpu_buffer;
 	void *bounce_buffer;
 	int alloc;
 	int len;
 	int dmem_size;
 	int dmem_offset;
 	int active_count;
 #ifdef DEBUG
 	int activated_frame;
 	int disactivated_frame;
 	int last_int_frame;
 	int last_req_frame;
 	u32 submitted_dwords[4];
 #endif
 };

 /* Hardware data memory info */
 struct imx21_dmem_area {
 	struct usb_host_endpoint *ep;
 	unsigned int offset;
 	unsigned int size;
 	struct list_head list;
 };

 #ifdef DEBUG
 struct debug_usage_stats {
 	unsigned int value;
 	unsigned int maximum;
 };

 struct debug_stats {
 	unsigned long submitted;
 	unsigned long completed_ok;
 	unsigned long completed_failed;
 	unsigned long unlinked;
 	unsigned long queue_etd;
 	unsigned long queue_dmem;
 };

 struct debug_isoc_trace {
 	int schedule_frame;
 	int submit_frame;
 	int request_len;
 	int done_frame;
 	int done_len;
 	int cc;
 	struct td *td;
 };
 #endif

 /* HCD data structure */
 struct imx21 {
 	spinlock_t lock;
 	struct device *dev;
 	struct usb_hcd *hcd;
 	struct mx21_usbh_platform_data *pdata;
 	struct list_head dmem_list;
 	struct list_head queue_for_etd; /* eps queued due to etd shortage */
 	struct list_head queue_for_dmem; /* etds queued due to dmem shortage */
 	struct etd_priv etd[USB_NUM_ETD];
 	struct clk *clk;
 	void __iomem *regs;
 #ifdef DEBUG
 	struct dentry *debug_root;
 	struct debug_stats nonisoc_stats;
 	struct debug_stats isoc_stats;
 	struct debug_usage_stats etd_usage;
 	struct debug_usage_stats dmem_usage;
 	struct debug_isoc_trace isoc_trace[20];
 	struct debug_isoc_trace isoc_trace_failed[20];
 	unsigned long debug_unblocks;
 	int isoc_trace_index;
 	int isoc_trace_index_failed;
 #endif
 };

 #endif
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* Macros and prototypes for i.MX21
	*
	* Copyright (C) 2006 Loping Dog Embedded Systems
	* Copyright (C) 2009 Martin Fuzzey
	* Originally written by Jay Monkman <jtm@lopingdog.com>
	* Ported to 2.6.30, debugged and enhanced by Martin Fuzzey
	*/

	#ifndef __LINUX_IMX21_HCD_H__
	#define __LINUX_IMX21_HCD_H__

	#ifdef CONFIG_DYNAMIC_DEBUG
	#define DEBUG
	#endif

	#include <linux/platform_data/usb-mx2.h>

	#define NUM_ISO_ETDS 2
	#define USB_NUM_ETD 32
	#define DMEM_SIZE 4096

	/* Register definitions */
	#define USBOTG_HWMODE 0x00
	#define USBOTG_HWMODE_ANASDBEN (1 << 14)
	#define USBOTG_HWMODE_OTGXCVR_SHIFT 6
	#define USBOTG_HWMODE_OTGXCVR_MASK (3 << 6)
	#define USBOTG_HWMODE_OTGXCVR_TD_RD (0 << 6)
	#define USBOTG_HWMODE_OTGXCVR_TS_RD (2 << 6)
	#define USBOTG_HWMODE_OTGXCVR_TD_RS (1 << 6)
	#define USBOTG_HWMODE_OTGXCVR_TS_RS (3 << 6)
	#define USBOTG_HWMODE_HOSTXCVR_SHIFT 4
	#define USBOTG_HWMODE_HOSTXCVR_MASK (3 << 4)
	#define USBOTG_HWMODE_HOSTXCVR_TD_RD (0 << 4)
	#define USBOTG_HWMODE_HOSTXCVR_TS_RD (2 << 4)
	#define USBOTG_HWMODE_HOSTXCVR_TD_RS (1 << 4)
	#define USBOTG_HWMODE_HOSTXCVR_TS_RS (3 << 4)
	#define USBOTG_HWMODE_CRECFG_MASK (3 << 0)
	#define USBOTG_HWMODE_CRECFG_HOST (1 << 0)
	#define USBOTG_HWMODE_CRECFG_FUNC (2 << 0)
	#define USBOTG_HWMODE_CRECFG_HNP (3 << 0)

	#define USBOTG_CINT_STAT 0x04
	#define USBOTG_CINT_STEN 0x08
	#define USBOTG_ASHNPINT (1 << 5)
	#define USBOTG_ASFCINT (1 << 4)
	#define USBOTG_ASHCINT (1 << 3)
	#define USBOTG_SHNPINT (1 << 2)
	#define USBOTG_FCINT (1 << 1)
	#define USBOTG_HCINT (1 << 0)

	#define USBOTG_CLK_CTRL 0x0c
	#define USBOTG_CLK_CTRL_FUNC (1 << 2)
	#define USBOTG_CLK_CTRL_HST (1 << 1)
	#define USBOTG_CLK_CTRL_MAIN (1 << 0)

	#define USBOTG_RST_CTRL 0x10
	#define USBOTG_RST_RSTI2C (1 << 15)
	#define USBOTG_RST_RSTCTRL (1 << 5)
	#define USBOTG_RST_RSTFC (1 << 4)
	#define USBOTG_RST_RSTFSKE (1 << 3)
	#define USBOTG_RST_RSTRH (1 << 2)
	#define USBOTG_RST_RSTHSIE (1 << 1)
	#define USBOTG_RST_RSTHC (1 << 0)

	#define USBOTG_FRM_INTVL 0x14
	#define USBOTG_FRM_REMAIN 0x18
	#define USBOTG_HNP_CSR 0x1c
	#define USBOTG_HNP_ISR 0x2c
	#define USBOTG_HNP_IEN 0x30

	#define USBOTG_I2C_TXCVR_REG(x) (0x100 + (x))
	#define USBOTG_I2C_XCVR_DEVAD 0x118
	#define USBOTG_I2C_SEQ_OP_REG 0x119
	#define USBOTG_I2C_SEQ_RD_STARTAD 0x11a
	#define USBOTG_I2C_OP_CTRL_REG 0x11b
	#define USBOTG_I2C_SCLK_TO_SCK_HPER 0x11e
	#define USBOTG_I2C_MASTER_INT_REG 0x11f

	#define USBH_HOST_CTRL 0x80
	#define USBH_HOST_CTRL_HCRESET (1 << 31)
	#define USBH_HOST_CTRL_SCHDOVR(x) ((x) << 16)
	#define USBH_HOST_CTRL_RMTWUEN (1 << 4)
	#define USBH_HOST_CTRL_HCUSBSTE_RESET (0 << 2)
	#define USBH_HOST_CTRL_HCUSBSTE_RESUME (1 << 2)
	#define USBH_HOST_CTRL_HCUSBSTE_OPERATIONAL (2 << 2)
	#define USBH_HOST_CTRL_HCUSBSTE_SUSPEND (3 << 2)
	#define USBH_HOST_CTRL_CTLBLKSR_1 (0 << 0)
	#define USBH_HOST_CTRL_CTLBLKSR_2 (1 << 0)
	#define USBH_HOST_CTRL_CTLBLKSR_3 (2 << 0)
	#define USBH_HOST_CTRL_CTLBLKSR_4 (3 << 0)

	#define USBH_SYSISR 0x88
	#define USBH_SYSISR_PSCINT (1 << 6)
	#define USBH_SYSISR_FMOFINT (1 << 5)
	#define USBH_SYSISR_HERRINT (1 << 4)
	#define USBH_SYSISR_RESDETINT (1 << 3)
	#define USBH_SYSISR_SOFINT (1 << 2)
	#define USBH_SYSISR_DONEINT (1 << 1)
	#define USBH_SYSISR_SORINT (1 << 0)

	#define USBH_SYSIEN 0x8c
	#define USBH_SYSIEN_PSCINT (1 << 6)
	#define USBH_SYSIEN_FMOFINT (1 << 5)
	#define USBH_SYSIEN_HERRINT (1 << 4)
	#define USBH_SYSIEN_RESDETINT (1 << 3)
	#define USBH_SYSIEN_SOFINT (1 << 2)
	#define USBH_SYSIEN_DONEINT (1 << 1)
	#define USBH_SYSIEN_SORINT (1 << 0)

	#define USBH_XBUFSTAT 0x98
	#define USBH_YBUFSTAT 0x9c
	#define USBH_XYINTEN 0xa0
	#define USBH_XFILLSTAT 0xa8
	#define USBH_YFILLSTAT 0xac
	#define USBH_ETDENSET 0xc0
	#define USBH_ETDENCLR 0xc4
	#define USBH_IMMEDINT 0xcc
	#define USBH_ETDDONESTAT 0xd0
	#define USBH_ETDDONEEN 0xd4
	#define USBH_FRMNUB 0xe0
	#define USBH_LSTHRESH 0xe4

	#define USBH_ROOTHUBA 0xe8
	#define USBH_ROOTHUBA_PWRTOGOOD_MASK (0xff)
	#define USBH_ROOTHUBA_PWRTOGOOD_SHIFT (24)
	#define USBH_ROOTHUBA_NOOVRCURP (1 << 12)
	#define USBH_ROOTHUBA_OVRCURPM (1 << 11)
	#define USBH_ROOTHUBA_DEVTYPE (1 << 10)
	#define USBH_ROOTHUBA_PWRSWTMD (1 << 9)
	#define USBH_ROOTHUBA_NOPWRSWT (1 << 8)
	#define USBH_ROOTHUBA_NDNSTMPRT_MASK (0xff)

	#define USBH_ROOTHUBB 0xec
	#define USBH_ROOTHUBB_PRTPWRCM(x) (1 << ((x) + 16))
	#define USBH_ROOTHUBB_DEVREMOVE(x) (1 << (x))

	#define USBH_ROOTSTAT 0xf0
	#define USBH_ROOTSTAT_CLRRMTWUE (1 << 31)
	#define USBH_ROOTSTAT_OVRCURCHG (1 << 17)
	#define USBH_ROOTSTAT_DEVCONWUE (1 << 15)
	#define USBH_ROOTSTAT_OVRCURI (1 << 1)
	#define USBH_ROOTSTAT_LOCPWRS (1 << 0)

	#define USBH_PORTSTAT(x) (0xf4 + ((x) * 4))
	#define USBH_PORTSTAT_PRTRSTSC (1 << 20)
	#define USBH_PORTSTAT_OVRCURIC (1 << 19)
	#define USBH_PORTSTAT_PRTSTATSC (1 << 18)
	#define USBH_PORTSTAT_PRTENBLSC (1 << 17)
	#define USBH_PORTSTAT_CONNECTSC (1 << 16)
	#define USBH_PORTSTAT_LSDEVCON (1 << 9)
	#define USBH_PORTSTAT_PRTPWRST (1 << 8)
	#define USBH_PORTSTAT_PRTRSTST (1 << 4)
	#define USBH_PORTSTAT_PRTOVRCURI (1 << 3)
	#define USBH_PORTSTAT_PRTSUSPST (1 << 2)
	#define USBH_PORTSTAT_PRTENABST (1 << 1)
	#define USBH_PORTSTAT_CURCONST (1 << 0)

	#define USB_DMAREV 0x800
	#define USB_DMAINTSTAT 0x804
	#define USB_DMAINTSTAT_EPERR (1 << 1)
	#define USB_DMAINTSTAT_ETDERR (1 << 0)

	#define USB_DMAINTEN 0x808
	#define USB_DMAINTEN_EPERRINTEN (1 << 1)
	#define USB_DMAINTEN_ETDERRINTEN (1 << 0)

	#define USB_ETDDMAERSTAT 0x80c
	#define USB_EPDMAERSTAT 0x810
	#define USB_ETDDMAEN 0x820
	#define USB_EPDMAEN 0x824
	#define USB_ETDDMAXTEN 0x828
	#define USB_EPDMAXTEN 0x82c
	#define USB_ETDDMAENXYT 0x830
	#define USB_EPDMAENXYT 0x834
	#define USB_ETDDMABST4EN 0x838
	#define USB_EPDMABST4EN 0x83c

	#define USB_MISCCONTROL 0x840
	#define USB_MISCCONTROL_ISOPREVFRM (1 << 3)
	#define USB_MISCCONTROL_SKPRTRY (1 << 2)
	#define USB_MISCCONTROL_ARBMODE (1 << 1)
	#define USB_MISCCONTROL_FILTCC (1 << 0)

	#define USB_ETDDMACHANLCLR 0x848
	#define USB_EPDMACHANLCLR 0x84c
	#define USB_ETDSMSA(x) (0x900 + ((x) * 4))
	#define USB_EPSMSA(x) (0x980 + ((x) * 4))
	#define USB_ETDDMABUFPTR(x) (0xa00 + ((x) * 4))
	#define USB_EPDMABUFPTR(x) (0xa80 + ((x) * 4))

	#define USB_ETD_DWORD(x, w) (0x200 + ((x) * 16) + ((w) * 4))
	#define DW0_ADDRESS 0
	#define DW0_ENDPNT 7
	#define DW0_DIRECT 11
	#define DW0_SPEED 13
	#define DW0_FORMAT 14
	#define DW0_MAXPKTSIZ 16
	#define DW0_HALTED 27
	#define DW0_TOGCRY 28
	#define DW0_SNDNAK 30

	#define DW1_XBUFSRTAD 0
	#define DW1_YBUFSRTAD 16

	#define DW2_RTRYDELAY 0
	#define DW2_POLINTERV 0
	#define DW2_STARTFRM 0
	#define DW2_RELPOLPOS 8
	#define DW2_DIRPID 16
	#define DW2_BUFROUND 18
	#define DW2_DELAYINT 19
	#define DW2_DATATOG 22
	#define DW2_ERRORCNT 24
	#define DW2_COMPCODE 28

	#define DW3_TOTBYECNT 0
	#define DW3_PKTLEN0 0
	#define DW3_COMPCODE0 12
	#define DW3_PKTLEN1 16
	#define DW3_BUFSIZE 21
	#define DW3_COMPCODE1 28

	#define USBCTRL 0x600
	#define USBCTRL_I2C_WU_INT_STAT (1 << 27)
	#define USBCTRL_OTG_WU_INT_STAT (1 << 26)
	#define USBCTRL_HOST_WU_INT_STAT (1 << 25)
	#define USBCTRL_FNT_WU_INT_STAT (1 << 24)
	#define USBCTRL_I2C_WU_INT_EN (1 << 19)
	#define USBCTRL_OTG_WU_INT_EN (1 << 18)
	#define USBCTRL_HOST_WU_INT_EN (1 << 17)
	#define USBCTRL_FNT_WU_INT_EN (1 << 16)
	#define USBCTRL_OTC_RCV_RXDP (1 << 13)
	#define USBCTRL_HOST1_BYP_TLL (1 << 12)
	#define USBCTRL_OTG_BYP_VAL(x) ((x) << 10)
	#define USBCTRL_HOST1_BYP_VAL(x) ((x) << 8)
	#define USBCTRL_OTG_PWR_MASK (1 << 6)
	#define USBCTRL_HOST1_PWR_MASK (1 << 5)
	#define USBCTRL_HOST2_PWR_MASK (1 << 4)
	#define USBCTRL_USB_BYP (1 << 2)
	#define USBCTRL_HOST1_TXEN_OE (1 << 1)

	#define USBOTG_DMEM 0x1000

	/* Values in TD blocks */
	#define TD_DIR_SETUP 0
	#define TD_DIR_OUT 1
	#define TD_DIR_IN 2
	#define TD_FORMAT_CONTROL 0
	#define TD_FORMAT_ISO 1
	#define TD_FORMAT_BULK 2
	#define TD_FORMAT_INT 3
	#define TD_TOGGLE_CARRY 0
	#define TD_TOGGLE_DATA0 2
	#define TD_TOGGLE_DATA1 3

	/* control transfer states */
	#define US_CTRL_SETUP 2
	#define US_CTRL_DATA 1
	#define US_CTRL_ACK 0

	/* bulk transfer main state and 0-length packet */
	#define US_BULK 1
	#define US_BULK0 0

	/ETD format description/
	#define IMX_FMT_CTRL 0x0
	#define IMX_FMT_ISO 0x1
	#define IMX_FMT_BULK 0x2
	#define IMX_FMT_INT 0x3

	static char fmt_urb_to_etd[4] = {
	/PIPE_ISOCHRONOUS/ IMX_FMT_ISO,
	/PIPE_INTERRUPT/ IMX_FMT_INT,
	/PIPE_CONTROL/ IMX_FMT_CTRL,
	/PIPE_BULK/ IMX_FMT_BULK
	};

	/* condition (error) CC codes and mapping (OHCI like) */

	#define TD_CC_NOERROR 0x00
	#define TD_CC_CRC 0x01
	#define TD_CC_BITSTUFFING 0x02
	#define TD_CC_DATATOGGLEM 0x03
	#define TD_CC_STALL 0x04
	#define TD_DEVNOTRESP 0x05
	#define TD_PIDCHECKFAIL 0x06
	/#define TD_UNEXPECTEDPID 0x07 - reserved, not active on MX2/
	#define TD_DATAOVERRUN 0x08
	#define TD_DATAUNDERRUN 0x09
	#define TD_BUFFEROVERRUN 0x0C
	#define TD_BUFFERUNDERRUN 0x0D
	#define TD_SCHEDULEOVERRUN 0x0E
	#define TD_NOTACCESSED 0x0F

	static const int cc_to_error[16] = {
	/* No Error */ 0,
	/* CRC Error */ -EILSEQ,
	/* Bit Stuff */ -EPROTO,
	/* Data Togg */ -EILSEQ,
	/* Stall */ -EPIPE,
	/* DevNotResp */ -ETIMEDOUT,
	/* PIDCheck */ -EPROTO,
	/* UnExpPID */ -EPROTO,
	/* DataOver */ -EOVERFLOW,
	/* DataUnder */ -EREMOTEIO,
	/* (for hw) */ -EIO,
	/* (for hw) */ -EIO,
	/* BufferOver */ -ECOMM,
	/* BuffUnder */ -ENOSR,
	/* (for HCD) */ -ENOSPC,
	/* (for HCD) */ -EALREADY
	};

	/* HCD data associated with a usb core URB */
	struct urb_priv {
	struct urb *urb;
	struct usb_host_endpoint *ep;
	int active;
	int state;
	struct td *isoc_td;
	int isoc_remaining;
	int isoc_status;
	};

	/* HCD data associated with a usb core endpoint */
	struct ep_priv {
	struct usb_host_endpoint *ep;
	struct list_head td_list;
	struct list_head queue;
	int etd[NUM_ISO_ETDS];
	int waiting_etd;
	};

	/* isoc packet */
	struct td {
	struct list_head list;
	struct urb *urb;
	struct usb_host_endpoint *ep;
	dma_addr_t dma_handle;
	void *cpu_buffer;
	int len;
	int frame;
	int isoc_index;
	};

	/* HCD data associated with a hardware ETD */
	struct etd_priv {
	struct usb_host_endpoint *ep;
	struct urb *urb;
	struct td *td;
	struct list_head queue;
	dma_addr_t dma_handle;
	void *cpu_buffer;
	void *bounce_buffer;
	int alloc;
	int len;
	int dmem_size;
	int dmem_offset;
	int active_count;
	#ifdef DEBUG
	int activated_frame;
	int disactivated_frame;
	int last_int_frame;
	int last_req_frame;
	u32 submitted_dwords[4];
	#endif
	};

	/* Hardware data memory info */
	struct imx21_dmem_area {
	struct usb_host_endpoint *ep;
	unsigned int offset;
	unsigned int size;
	struct list_head list;
	};

	#ifdef DEBUG
	struct debug_usage_stats {
	unsigned int value;
	unsigned int maximum;
	};

	struct debug_stats {
	unsigned long submitted;
	unsigned long completed_ok;
	unsigned long completed_failed;
	unsigned long unlinked;
	unsigned long queue_etd;
	unsigned long queue_dmem;
	};

	struct debug_isoc_trace {
	int schedule_frame;
	int submit_frame;
	int request_len;
	int done_frame;
	int done_len;
	int cc;
	struct td *td;
	};
	#endif

	/* HCD data structure */
	struct imx21 {
	spinlock_t lock;
	struct device *dev;
	struct usb_hcd *hcd;
	struct mx21_usbh_platform_data *pdata;
	struct list_head dmem_list;
	struct list_head queue_for_etd; /* eps queued due to etd shortage */
	struct list_head queue_for_dmem; /* etds queued due to dmem shortage */
	struct etd_priv etd[USB_NUM_ETD];
	struct clk *clk;
	void __iomem *regs;
	#ifdef DEBUG
	struct dentry *debug_root;
	struct debug_stats nonisoc_stats;
	struct debug_stats isoc_stats;
	struct debug_usage_stats etd_usage;
	struct debug_usage_stats dmem_usage;
	struct debug_isoc_trace isoc_trace[20];
	struct debug_isoc_trace isoc_trace_failed[20];
	unsigned long debug_unblocks;
	int isoc_trace_index;
	int isoc_trace_index_failed;
	#endif
	};

	#endif