/*
* 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
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __LINUX_IMX21_HCD_H__
#define __LINUX_IMX21_HCD_H__
#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