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kernel/linux-imx6_3.14.28/drivers/net/irda/donauboe.h 13.9 KB
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  /*********************************************************************
   *                
   * Filename:      toshoboe.h
   * Version:       2.16
   * Description:   Driver for the Toshiba OBOE (or type-O or 701)
   *                FIR Chipset, also supports the DONAUOBOE (type-DO
   *                or d01) FIR chipset which as far as I know is
   *                register compatible.
   * Status:        Experimental.
   * Author:        James McKenzie <james@fishsoup.dhs.org>
   * Created at:    Sat May 8  12:35:27 1999
   * Modified: 2.16 Martin Lucina <mato@kotelna.sk>
   * Modified: 2.16 Sat Jun 22 18:54:29 2002 (sync headers)
   * Modified: 2.17 Christian Gennerat <christian.gennerat@polytechnique.org>
   * Modified: 2.17 jeu sep 12 08:50:20 2002 (add lock to be used by spinlocks)
   * 
   *     Copyright (c) 1999 James McKenzie, 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.
   *  
   *     Neither James McKenzie nor Cambridge University admit liability nor
   *     provide warranty for any of this software. This material is 
   *     provided "AS-IS" and at no charge.
   * 
   *     Applicable Models : Libretto 100/110CT and many more.
   *     Toshiba refers to this chip as the type-O IR port,
   *     or the type-DO IR port.
   *
   * IrDA chip set list from Toshiba Computer Engineering Corp.
   * model			method	maker	controller		Version 
   * Portege 320CT	FIR,SIR Toshiba Oboe(Triangle) 
   * Portege 3010CT	FIR,SIR Toshiba Oboe(Sydney) 
   * Portege 3015CT	FIR,SIR Toshiba Oboe(Sydney) 
   * Portege 3020CT	FIR,SIR Toshiba Oboe(Sydney) 
   * Portege 7020CT	FIR,SIR ?		?
   * 
   * Satell. 4090XCDT	FIR,SIR ?		?
   * 
   * Libretto 100CT	FIR,SIR Toshiba Oboe 
   * Libretto 1000CT	FIR,SIR Toshiba Oboe 
   * 
   * TECRA750DVD		FIR,SIR Toshiba Oboe(Triangle)	REV ID=14h 
   * TECRA780			FIR,SIR Toshiba Oboe(Sandlot)	REV ID=32h,33h 
   * TECRA750CDT		FIR,SIR Toshiba Oboe(Triangle)	REV ID=13h,14h 
   * TECRA8000		FIR,SIR Toshiba Oboe(ISKUR)		REV ID=23h 
   * 
   ********************************************************************/
  
  /* The documentation for this chip is allegedly released         */
  /* However I have not seen it, not have I managed to contact     */
  /* anyone who has. HOWEVER the chip bears a striking resemblance */
  /* to the IrDA controller in the Toshiba RISC TMPR3922 chip      */
  /* the documentation for this is freely available at             */
  /* http://www.madingley.org/james/resources/toshoboe/TMPR3922.pdf */
  /* The mapping between the registers in that document and the    */
  /* Registers in the 701 oboe chip are as follows    */
  
  
  /* 3922 reg     701 regs, by bit numbers                        */
  /*               7- 0  15- 8  24-16  31-25                      */
  /* $28            0x0    0x1                                    */
  /* $2c                                     SEE NOTE 1           */
  /* $30            0x6    0x7                                    */
  /* $34            0x8    0x9               SEE NOTE 2           */
  /* $38           0x10   0x11                                    */
  /* $3C                   0xe               SEE NOTE 3           */
  /* $40           0x12   0x13                                    */
  /* $44           0x14   0x15                                    */
  /* $48           0x16   0x17                                    */
  /* $4c           0x18   0x19                                    */
  /* $50           0x1a   0x1b                                    */
  
  /* FIXME: could be 0x1b 0x1a here */
  
  /* $54           0x1d   0x1c                                    */
  /* $5C           0xf                       SEE NOTE 4           */
  /* $130                                    SEE NOTE 5           */
  /* $134                                    SEE NOTE 6           */
  /*                                                              */
  /* NOTES:                                                       */
  /* 1. The pointer to ring is packed in most unceremoniusly      */
  /*    701 Register      Address bits    (A9-A0 must be zero)    */
  /*            0x4:      A17 A16 A15 A14 A13 A12 A11 A10         */
  /*            0x5:      A25 A24 A23 A22 A21 A20 A19 A18         */
  /*            0x2:        0   0 A31 A30 A29 A28 A27 A26         */
  /*                                                              */
  /* 2. The M$ drivers do a write 0x1 to 0x9, however the 3922    */
  /*    documentation would suggest that a write of 0x1 to 0x8    */
  /*    would be more appropriate.                                */
  /*                                                              */
  /* 3. This assignment is tenuous at best, register 0xe seems to */
  /*    have bits arranged 0 0 0 R/W R/W R/W R/W R/W              */
  /*    if either of the lower two bits are set the chip seems to */
  /*    switch off                                                */
  /*                                                              */
  /* 4. Bits 7-4 seem to be different 4 seems just to be generic  */
  /*    receiver busy flag                                        */
  /*                                                              */
  /* 5. and 6. The IER and ISR have a different bit assignment    */
  /*    The lower three bits of both read back as ones            */
  /* ISR is register 0xc, IER is register 0xd                     */
  /*           7      6      5      4      3      2      1      0 */
  /* 0xc: TxDone RxDone TxUndr RxOver SipRcv      1      1      1 */
  /* 0xd: TxDone RxDone TxUndr RxOver SipRcv      1      1      1 */
  /* TxDone xmitt done (generated only if generate interrupt bit  */
  /*   is set in the ring)                                        */
  /* RxDone recv completed (or other recv condition if you set it */
  /*   up                                                         */
  /* TxUnder underflow in Transmit FIFO                           */
  /* RxOver  overflow in Recv FIFO                                */
  /* SipRcv  received serial gap  (or other condition you set)    */
  /* Interrupts are enabled by writing a one to the IER register  */
  /* Interrupts are cleared by writing a one to the ISR register */
  /*                                                              */
  /* 6. The remaining registers: 0x6 and 0x3 appear to be         */
  /*    reserved parts of 16 or 32 bit registersthe remainder     */
  /*    0xa 0xb 0x1e 0x1f could possibly be (by their behaviour)  */
  /*    the Unicast Filter register at $58.                       */
  /*                                                              */
  /* 7. While the core obviously expects 32 bit accesses all the  */
  /*    M$ drivers do 8 bit accesses, infact the Miniport ones    */
  /*    write and read back the byte serveral times (why?)        */
  
  
  #ifndef TOSHOBOE_H
  #define TOSHOBOE_H
  
  /* Registers */
  
  #define OBOE_IO_EXTENT	0x1f
  
  /*Receive and transmit slot pointers */
  #define OBOE_REG(i)	(i+(self->base))
  #define OBOE_RXSLOT	OBOE_REG(0x0)
  #define OBOE_TXSLOT	OBOE_REG(0x1)
  #define OBOE_SLOT_MASK	0x3f
  
  #define OBOE_TXRING_OFFSET		0x200
  #define OBOE_TXRING_OFFSET_IN_SLOTS	0x40
  
  /*pointer to the ring */
  #define OBOE_RING_BASE0	OBOE_REG(0x4)
  #define OBOE_RING_BASE1	OBOE_REG(0x5)
  #define OBOE_RING_BASE2	OBOE_REG(0x2)
  #define OBOE_RING_BASE3	OBOE_REG(0x3)
  
  /*Number of slots in the ring */
  #define OBOE_RING_SIZE  OBOE_REG(0x7)
  #define OBOE_RING_SIZE_RX4	0x00
  #define OBOE_RING_SIZE_RX8	0x01
  #define OBOE_RING_SIZE_RX16	0x03
  #define OBOE_RING_SIZE_RX32	0x07
  #define OBOE_RING_SIZE_RX64	0x0f
  #define OBOE_RING_SIZE_TX4	0x00
  #define OBOE_RING_SIZE_TX8	0x10
  #define OBOE_RING_SIZE_TX16	0x30
  #define OBOE_RING_SIZE_TX32	0x70
  #define OBOE_RING_SIZE_TX64	0xf0
  
  #define OBOE_RING_MAX_SIZE	64
  
  /*Causes the gubbins to re-examine the ring */
  #define OBOE_PROMPT	OBOE_REG(0x9)
  #define OBOE_PROMPT_BIT		0x1
  
  /* Interrupt Status Register */
  #define OBOE_ISR	OBOE_REG(0xc)
  /* Interrupt Enable Register */
  #define OBOE_IER	OBOE_REG(0xd)
  /* Interrupt bits for IER and ISR */
  #define OBOE_INT_TXDONE		0x80
  #define OBOE_INT_RXDONE		0x40
  #define OBOE_INT_TXUNDER	0x20
  #define OBOE_INT_RXOVER		0x10
  #define OBOE_INT_SIP		0x08
  #define OBOE_INT_MASK		0xf8
  
  /*Reset Register */
  #define OBOE_CONFIG1	OBOE_REG(0xe)
  #define OBOE_CONFIG1_RST	0x01
  #define OBOE_CONFIG1_DISABLE	0x02
  #define OBOE_CONFIG1_4		0x08
  #define OBOE_CONFIG1_8		0x08
  
  #define OBOE_CONFIG1_ON		0x8
  #define OBOE_CONFIG1_RESET	0xf
  #define OBOE_CONFIG1_OFF	0xe
  
  #define OBOE_STATUS	OBOE_REG(0xf)
  #define OBOE_STATUS_RXBUSY	0x10
  #define OBOE_STATUS_FIRRX	0x04
  #define OBOE_STATUS_MIRRX	0x02
  #define OBOE_STATUS_SIRRX	0x01
  
  
  /*Speed control registers */
  #define OBOE_CONFIG0L	OBOE_REG(0x10)
  #define OBOE_CONFIG0H	OBOE_REG(0x11)
  
  #define OBOE_CONFIG0H_TXONLOOP  0x80 /*Transmit when looping (dangerous) */
  #define OBOE_CONFIG0H_LOOP	0x40 /*Loopback Tx->Rx */
  #define OBOE_CONFIG0H_ENTX	0x10 /*Enable Tx */
  #define OBOE_CONFIG0H_ENRX	0x08 /*Enable Rx */
  #define OBOE_CONFIG0H_ENDMAC	0x04 /*Enable/reset* the DMA controller */
  #define OBOE_CONFIG0H_RCVANY	0x02 /*DMA mode 1=bytes, 0=dwords */
  
  #define OBOE_CONFIG0L_CRC16	0x80 /*CRC 1=16 bit 0=32 bit */
  #define OBOE_CONFIG0L_ENFIR	0x40 /*Enable FIR */
  #define OBOE_CONFIG0L_ENMIR	0x20 /*Enable MIR */
  #define OBOE_CONFIG0L_ENSIR	0x10 /*Enable SIR */
  #define OBOE_CONFIG0L_ENSIRF	0x08 /*Enable SIR framer */
  #define OBOE_CONFIG0L_SIRTEST	0x04 /*Enable SIR framer in MIR and FIR */
  #define OBOE_CONFIG0L_INVERTTX  0x02 /*Invert Tx Line */
  #define OBOE_CONFIG0L_INVERTRX  0x01 /*Invert Rx Line */
  
  #define OBOE_BOF	OBOE_REG(0x12)
  #define OBOE_EOF	OBOE_REG(0x13)
  
  #define OBOE_ENABLEL	OBOE_REG(0x14)
  #define OBOE_ENABLEH	OBOE_REG(0x15)
  
  #define OBOE_ENABLEH_PHYANDCLOCK	0x80 /*Toggle low to copy config in */
  #define OBOE_ENABLEH_CONFIGERR		0x40
  #define OBOE_ENABLEH_FIRON		0x20
  #define OBOE_ENABLEH_MIRON		0x10
  #define OBOE_ENABLEH_SIRON		0x08
  #define OBOE_ENABLEH_ENTX		0x04
  #define OBOE_ENABLEH_ENRX		0x02
  #define OBOE_ENABLEH_CRC16		0x01
  
  #define OBOE_ENABLEL_BROADCAST		0x01
  
  #define OBOE_CURR_PCONFIGL		OBOE_REG(0x16) /*Current config */
  #define OBOE_CURR_PCONFIGH		OBOE_REG(0x17)
  
  #define OBOE_NEW_PCONFIGL		OBOE_REG(0x18)
  #define OBOE_NEW_PCONFIGH		OBOE_REG(0x19)
  
  #define OBOE_PCONFIGH_BAUDMASK		0xfc
  #define OBOE_PCONFIGH_WIDTHMASK		0x04
  #define OBOE_PCONFIGL_WIDTHMASK		0xe0
  #define OBOE_PCONFIGL_PREAMBLEMASK	0x1f
  
  #define OBOE_PCONFIG_BAUDMASK		0xfc00
  #define OBOE_PCONFIG_BAUDSHIFT		10
  #define OBOE_PCONFIG_WIDTHMASK		0x04e0
  #define OBOE_PCONFIG_WIDTHSHIFT		5
  #define OBOE_PCONFIG_PREAMBLEMASK	0x001f
  #define OBOE_PCONFIG_PREAMBLESHIFT	0
  
  #define OBOE_MAXLENL			OBOE_REG(0x1a)
  #define OBOE_MAXLENH			OBOE_REG(0x1b)
  
  #define OBOE_RXCOUNTH			OBOE_REG(0x1c) /*Reset on recipt */
  #define OBOE_RXCOUNTL			OBOE_REG(0x1d) /*of whole packet */
  
  /* The PCI ID of the OBOE chip */
  #ifndef PCI_DEVICE_ID_FIR701
  #define PCI_DEVICE_ID_FIR701 	0x0701
  #endif
  
  #ifndef PCI_DEVICE_ID_FIRD01
  #define PCI_DEVICE_ID_FIRD01 	0x0d01
  #endif
  
  struct OboeSlot
  {
    __u16 len;                    /*Tweleve bits of packet length */
    __u8 unused;
    __u8 control;                 /*Slot control/status see below */
    __u32 address;                /*Slot buffer address */
  }
  __packed;
  
  #define OBOE_NTASKS OBOE_TXRING_OFFSET_IN_SLOTS
  
  struct OboeRing
  {
    struct OboeSlot rx[OBOE_NTASKS];
    struct OboeSlot tx[OBOE_NTASKS];
  };
  
  #define OBOE_RING_LEN (sizeof(struct OboeRing))
  
  
  #define OBOE_CTL_TX_HW_OWNS	0x80 /*W/R This slot owned by the hardware */
  #define OBOE_CTL_TX_DISTX_CRC	0x40 /*W Disable CRC generation for [FM]IR */
  #define OBOE_CTL_TX_BAD_CRC     0x20 /*W Generate bad CRC */
  #define OBOE_CTL_TX_SIP		0x10   /*W Generate an SIP after xmittion */
  #define OBOE_CTL_TX_MKUNDER	0x08 /*W Generate an underrun error */
  #define OBOE_CTL_TX_RTCENTX	0x04 /*W Enable receiver and generate TXdone */
       /*  After this slot is processed        */
  #define OBOE_CTL_TX_UNDER	0x01  /*R Set by hardware to indicate underrun */
  
  
  #define OBOE_CTL_RX_HW_OWNS	0x80 /*W/R This slot owned by hardware */
  #define OBOE_CTL_RX_PHYERR	0x40 /*R Decoder error on receiption */
  #define OBOE_CTL_RX_CRCERR	0x20 /*R CRC error only set for [FM]IR */
  #define OBOE_CTL_RX_LENGTH	0x10 /*R Packet > max Rx length  */
  #define OBOE_CTL_RX_OVER	0x08   /*R set to indicate an overflow */
  #define OBOE_CTL_RX_SIRBAD	0x04 /*R SIR had BOF in packet or ABORT sequence */
  #define OBOE_CTL_RX_RXEOF	0x02  /*R Finished receiving on this slot */
  
  
  struct toshoboe_cb
  {
    struct net_device *netdev;    /* Yes! we are some kind of netdevice */
    struct tty_driver ttydev;
  
    struct irlap_cb *irlap;       /* The link layer we are binded to */
  
    chipio_t io;                  /* IrDA controller information */
    struct qos_info qos;          /* QoS capabilities for this device */
  
    __u32 flags;                  /* Interface flags */
  
    struct pci_dev *pdev;         /*PCI device */
    int base;                     /*IO base */
  
  
    int txpending;                /*how many tx's are pending */
    int txs, rxs;                 /*Which slots are we at  */
  
    int irdad;                    /*Driver under control of netdev end  */
    int async;                    /*Driver under control of async end   */
  
  
    int stopped;                  /*Stopped by some or other APM stuff */
  
    int filter;                   /*In SIR mode do we want to receive
                                     frames or byte ranges */
  
    void *ringbuf;                /*The ring buffer */
    struct OboeRing *ring;        /*The ring */
  
    void *tx_bufs[OBOE_RING_MAX_SIZE]; /*The buffers   */
    void *rx_bufs[OBOE_RING_MAX_SIZE];
  
  
    int speed;                    /*Current setting of the speed */
    int new_speed;                /*Set to request a speed change */
  
  /* The spinlock protect critical parts of the driver.
   *	Locking is done like this :
   *		spin_lock_irqsave(&self->spinlock, flags);
   *	Releasing the lock :
   *		spin_unlock_irqrestore(&self->spinlock, flags);
   */
    spinlock_t spinlock;		
    /* Used for the probe and diagnostics code */
    int int_rx;
    int int_tx;
    int int_txunder;
    int int_rxover;
    int int_sip;
  };
  
  
  #endif