FreeBSD/Linux Kernel Cross Reference
sys/pci/amd.h

     /*
      *********************************************************************
      *      FILE NAME  : amd.h
      *           BY    : C.L. Huang         (ching@tekram.com.tw)
      *                   Erich Chen     (erich@tekram.com.tw)
      *      Description: Device Driver for the amd53c974 PCI Bus Master
      *                   SCSI Host adapter found on cards such as
      *                   the Tekram DC-390(T).
      * (C)Copyright 1995-1999 Tekram Technology Co., Ltd.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *********************************************************************
     * $FreeBSD$
     */
    
    #ifndef AMD_H
    #define AMD_H
    
    #define AMD_TRANS_CUR           0x01    /* Modify current neogtiation status */
    #define AMD_TRANS_ACTIVE        0x03    /* Assume this is the active target */
    #define AMD_TRANS_GOAL          0x04    /* Modify negotiation goal */
    #define AMD_TRANS_USER          0x08    /* Modify user negotiation settings */
    
    /*
     * Per target transfer parameters.
     */
    struct amd_transinfo {
            u_int8_t period;
            u_int8_t offset;
    };
    
    struct amd_target_info {
            /*
             * Records the currently active and user/default settings for
             * tagged queueing and disconnection for each target.
             */
            u_int8_t disc_tag;
    #define         AMD_CUR_DISCENB 0x01
    #define         AMD_CUR_TAGENB  0x02
    #define         AMD_USR_DISCENB 0x04
    #define         AMD_USR_TAGENB  0x08
            u_int8_t   CtrlR1;
            u_int8_t   CtrlR3;
            u_int8_t   CtrlR4;
            u_int8_t   sync_period_reg;
            u_int8_t   sync_offset_reg;
    
            /*
             * Currently active transfer settings.
             */
            struct amd_transinfo current;
            /*
             * Transfer settings we wish to achieve
             * through negotiation.
             */
            struct amd_transinfo goal;
            /*
             * User defined or default transfer settings.
             */
            struct amd_transinfo user;
    };
    
    /*
     * Scatter/Gather Segment entry.
     */
    struct amd_sg {
            u_int32_t   SGXLen;
            u_int32_t   SGXPtr;
    };
    
    /*
     * Chipset feature limits
     */
    #define MAX_SCSI_ID             8
    #define AMD_MAX_SYNC_OFFSET     15
    #define AMD_TARGET_MAX  7
    #define AMD_LUN_MAX             7
    #define AMD_NSEG                (btoc(MAXPHYS) + 1)
    #define AMD_MAXTRANSFER_SIZE    0xFFFFFF /* restricted by 24 bit counter */
   #define MAX_DEVICES             10
   #define MAX_TAGS_CMD_QUEUE      256
   #define MAX_CMD_PER_LUN         6
   #define MAX_SRB_CNT             256
   #define MAX_START_JOB           256
   
   /*
    * BIT position to integer mapping.
    */
   #define BIT(N) (0x01 << N)
   
   /*
    * EEPROM storage offsets and data structures.
    */
   typedef struct _EEprom {
           u_int8_t   EE_MODE1;
           u_int8_t   EE_SPEED;
           u_int8_t   xx1;
           u_int8_t   xx2;
   }       EEprom, *PEEprom;
   
   #define EE_ADAPT_SCSI_ID        64
   #define EE_MODE2                65
   #define EE_DELAY                66
   #define EE_TAG_CMD_NUM          67
   #define EE_DATA_SIZE            128
   #define EE_CHECKSUM             0x1234
   
   /*
    * EE_MODE1 bits definition
    */
   #define PARITY_CHK              BIT(0)
   #define SYNC_NEGO               BIT(1)
   #define EN_DISCONNECT           BIT(2)
   #define SEND_START              BIT(3)
   #define TAG_QUEUING             BIT(4)
   
   /*
    * EE_MODE2 bits definition
    */
   #define MORE2_DRV               BIT(0)
   #define GREATER_1G              BIT(1)
   #define RST_SCSI_BUS            BIT(2)
   #define ACTIVE_NEGATION         BIT(3)
   #define NO_SEEK                 BIT(4)
   #define LUN_CHECK               BIT(5)
   
   #define ENABLE_CE               1
   #define DISABLE_CE              0
   #define EEPROM_READ             0x80
   
   #define AMD_TAG_WILDCARD ((u_int)(~0))
   
   /*
    * SCSI Request Block
    */
   struct amd_srb {
           TAILQ_ENTRY(amd_srb) links;
           u_int8_t         CmdBlock[12];
           union            ccb *pccb;
           bus_dmamap_t     dmamap;
           struct           amd_sg *pSGlist;
   
           u_int32_t        TotalXferredLen;
           u_int32_t        SGPhysAddr;    /* a segment starting address */
           u_int32_t        SGToBeXferLen; /* to be xfer length */
           u_int32_t        Segment0[2];
           u_int32_t        Segment1[2];
   
           struct           amd_sg SGsegment[AMD_NSEG];
           struct           amd_sg Segmentx;/* a one entry of S/G list table */
           u_int8_t        *pMsgPtr;
           u_int16_t        SRBState;
   
           u_int8_t         AdaptStatus;
           u_int8_t         TargetStatus;
           u_int8_t         MsgCnt;
           u_int8_t         EndMessage;
           u_int8_t         TagNumber;
           u_int8_t         SGcount;
           u_int8_t         SGIndex;
           u_int8_t         IORBFlag;      /* ;81h-Reset, 2-retry */
   
           u_int8_t         SRBStatus;
           u_int8_t         SRBFlag;
           /* ; b0-AutoReqSense,b6-Read,b7-write */
           /* ; b4-settimeout,b5-Residual valid */
           u_int8_t         ScsiCmdLen;
   };
   
   TAILQ_HEAD(srb_queue, amd_srb);
   
   /*
    * Per-adapter, software configuration.
    */
   struct amd_softc {
           device_t                dev;
           bus_space_tag_t         tag;
           bus_space_handle_t      bsh;
           bus_dma_tag_t           buffer_dmat;   /* dmat for buffer I/O */  
           int                     unit;
   
           int        last_phase;
           int        cur_target;
           int        cur_lun;
           struct     amd_srb *active_srb;
           struct     amd_srb *untagged_srbs[AMD_TARGET_MAX+1][AMD_LUN_MAX+1];
           struct     amd_target_info tinfo[AMD_TARGET_MAX+1];
           u_int16_t  disc_count[AMD_TARGET_MAX+1][AMD_LUN_MAX+1];
   
           struct     srb_queue free_srbs;
           struct     srb_queue waiting_srbs;
           struct     srb_queue running_srbs;
   
           struct     amd_srb *pTmpSRB;
   
           u_int16_t  SRBCount;
   
           u_int16_t  max_id;
           u_int16_t  max_lun;
   
           /* Hooks into the CAM XPT */
           struct     cam_sim *psim;
           struct     cam_path *ppath;
   
           u_int8_t   msgin_buf[6];
           u_int8_t   msgout_buf[6];
           u_int      msgin_index;
           u_int      msgout_index;
           u_int      msgout_len;
   
           u_int8_t   status;
           u_int8_t   AdaptSCSIID;         /* ; Adapter SCSI Target ID */
           u_int8_t   AdaptSCSILUN;        /* ; Adapter SCSI LUN */
   
           u_int8_t   ACBFlag;
   
           u_int8_t   Gmode2;
   
           u_int8_t   HostID_Bit;
   
           u_int8_t   InitDCB_flag[8][8];  /* flag of initDCB for device */
           struct     amd_srb SRB_array[MAX_SRB_CNT]; /* +45Ch, Len=        */
           struct     amd_srb TmpSRB;
           /* Setup data stored in an 93c46 serial eeprom */
           u_int8_t   eepromBuf[EE_DATA_SIZE];
   };
   
   /*
    *   ----SRB State machine definition
    */
   #define SRB_FREE                0
   #define SRB_READY               BIT(1)
   #define SRB_MSGOUT              BIT(2)  /* ;arbitration+msg_out 1st byte */
   #define SRB_MSGIN               BIT(3)
   #define SRB_MSGIN_MULTI         BIT(4)
   #define SRB_COMMAND             BIT(5)
   #define SRB_START               BIT(6)  /* ;arbitration+msg_out+command_out */
   #define SRB_DISCONNECT          BIT(7)
   #define SRB_DATA_XFER           BIT(8)
   #define SRB_XFERPAD             BIT(9)
   #define SRB_STATUS              BIT(10)
   #define SRB_COMPLETED           BIT(11)
   #define SRB_ABORT_SENT          BIT(12)
   #define DO_SYNC_NEGO            BIT(13)
   #define SRB_UNEXPECT_RESEL      BIT(14)
   
   /*
    *   ---ACB Flag
    */
   #define RESET_DEV               BIT(0)
   #define RESET_DETECT            BIT(1)
   #define RESET_DONE              BIT(2)
   
   /*
    *   ---DCB Flag
    */
   #define ABORT_DEV_              BIT(0)
   
   /*
    *   ---SRB status
    */
   #define SRB_OK                  BIT(0)
   #define ABORTION                BIT(1)
   #define OVER_RUN                BIT(2)
   #define UNDER_RUN               BIT(3)
   #define PARITY_ERROR            BIT(4)
   #define SRB_ERROR               BIT(5)
   
   /*
    *   ---SRB Flags
    */
   #define DATAOUT                 BIT(7)
   #define DATAIN                  BIT(6)
   #define RESIDUAL_VALID          BIT(5)
   #define ENABLE_TIMER            BIT(4)
   #define RESET_DEV0              BIT(2)
   #define ABORT_DEV               BIT(1)
   #define AUTO_REQSENSE           BIT(0)
   
   /*
    *   ---Adapter status
    */
   #define H_STATUS_GOOD           0
   #define H_SEL_TIMEOUT           0x11
   #define H_OVER_UNDER_RUN        0x12
   #define H_UNEXP_BUS_FREE        0x13
   #define H_TARGET_PHASE_F        0x14
   #define H_INVALID_CCB_OP        0x16
   #define H_LINK_CCB_BAD          0x17
   #define H_BAD_TARGET_DIR        0x18
   #define H_DUPLICATE_CCB         0x19
   #define H_BAD_CCB_OR_SG         0x1A
   #define H_ABORT                 0x0FF
   
   /*
    * AMD specific "status" codes returned in the SCSI status byte.
    */
   #define AMD_SCSI_STAT_UNEXP_BUS_F       0xFD    /* ;  Unexpect Bus Free */
   #define AMD_SCSI_STAT_BUS_RST_DETECT    0xFE    /* ;  Scsi Bus Reset detected */
   #define AMD_SCSI_STAT_SEL_TIMEOUT       0xFF    /* ;  Selection Time out */
   
   /*
    *   ---Sync_Mode
    */
   #define SYNC_DISABLE        0
   #define SYNC_ENABLE         BIT(0)
   #define SYNC_NEGO_DONE      BIT(1)
   #define WIDE_ENABLE         BIT(2)
   #define WIDE_NEGO_DONE      BIT(3)
   #define EN_TAG_QUEUING      BIT(4)
   #define EN_ATN_STOP         BIT(5)
   
   #define SYNC_NEGO_OFFSET    15
   
   /*
    *    ---SCSI bus phase
    */
   #define SCSI_DATA_OUT           0
   #define SCSI_DATA_IN            1
   #define SCSI_COMMAND            2
   #define SCSI_STATUS             3
   #define SCSI_NOP0               4
   #define SCSI_ARBITRATING        5
   #define SCSI_MSG_OUT            6
   #define SCSI_MSG_IN             7
   #define SCSI_BUS_FREE           8
   
   /*
    *==========================================================
    *              AMD 53C974 Registers bit Definition
    *==========================================================
    */
   
   /*
    *      ------SCSI Register-------
    *      Command Reg.(+0CH)
    */
   #define DMA_COMMAND             BIT(7)
   #define NOP_CMD                 0
   #define CLEAR_FIFO_CMD          1
   #define RST_DEVICE_CMD          2
   #define RST_SCSI_BUS_CMD        3
   #define INFO_XFER_CMD           0x10
   #define INITIATOR_CMD_CMPLTE    0x11
   #define MSG_ACCEPTED_CMD        0x12
   #define XFER_PAD_BYTE           0x18
   #define SET_ATN_CMD             0x1A
   #define RESET_ATN_CMD           0x1B
   #define SEL_W_ATN               0x42
   #define SEL_W_ATN_STOP          0x43
   #define EN_SEL_RESEL            0x44
   #define SEL_W_ATN2              0x46
   #define DATA_XFER_CMD           INFO_XFER_CMD
   
   
   /*
    *     ------SCSI Register-------
    *     SCSI Status Reg.(+10H)
    */
   #define INTERRUPT               BIT(7)
   #define ILLEGAL_OP_ERR          BIT(6)
   #define PARITY_ERR              BIT(5)
   #define COUNT_2_ZERO            BIT(4)
   #define GROUP_CODE_VALID        BIT(3)
   #define SCSI_PHASE_MASK         (BIT(2)+BIT(1)+BIT(0))
   
   /*
    *     ------SCSI Register-------
    *     Interrupt Status Reg.(+14H)
    */
   #define SCSI_RESET_             BIT(7)
   #define INVALID_CMD             BIT(6)
   #define DISCONNECTED            BIT(5)
   #define SERVICE_REQUEST         BIT(4)
   #define SUCCESSFUL_OP           BIT(3)
   #define RESELECTED              BIT(2)
   #define SEL_ATTENTION           BIT(1)
   #define SELECTED                BIT(0)
   
   /*
    *     ------SCSI Register-------
    *    Internal State Reg.(+18H)
    */
   #define SYNC_OFFSET_FLAG        BIT(3)
   #define INTRN_STATE_MASK        (BIT(2)+BIT(1)+BIT(0))
   
   /*
    *     ------SCSI Register-------
    *     Clock Factor Reg.(+24H)
    */
   #define CLK_FREQ_40MHZ          0
   #define CLK_FREQ_35MHZ          (BIT(2)+BIT(1)+BIT(0))
   #define CLK_FREQ_30MHZ          (BIT(2)+BIT(1))
   #define CLK_FREQ_25MHZ          (BIT(2)+BIT(0))
   #define CLK_FREQ_20MHZ          BIT(2)
   #define CLK_FREQ_15MHZ          (BIT(1)+BIT(0))
   #define CLK_FREQ_10MHZ          BIT(1)
   
   /*
    *     ------SCSI Register-------
    *     Control Reg. 1(+20H)
    */
   #define EXTENDED_TIMING         BIT(7)
   #define DIS_INT_ON_SCSI_RST     BIT(6)
   #define PARITY_ERR_REPO         BIT(4)
   #define SCSI_ID_ON_BUS          (BIT(2)+BIT(1)+BIT(0))
   
   /*
    *     ------SCSI Register-------
    *     Control Reg. 2(+2CH)
    */
   #define EN_FEATURE              BIT(6)
   #define EN_SCSI2_CMD            BIT(3)
   
   /*
    *     ------SCSI Register-------
    *     Control Reg. 3(+30H)
    */
   #define ID_MSG_CHECK            BIT(7)
   #define EN_QTAG_MSG             BIT(6)
   #define EN_GRP2_CMD             BIT(5)
   #define FAST_SCSI               BIT(4)  /* ;10MB/SEC */
   #define FAST_CLK                BIT(3)  /* ;25 - 40 MHZ */
   
   /*
    *     ------SCSI Register-------
    *     Control Reg. 4(+34H)
    */
   #define EATER_12NS              0
   #define EATER_25NS              BIT(7)
   #define EATER_35NS              BIT(6)
   #define EATER_0NS               (BIT(7)+BIT(6))
   #define NEGATE_REQACKDATA       BIT(2)
   #define NEGATE_REQACK           BIT(3)
   
   /*
    *========================================
    *             DMA Register
    *========================================
    */
   
   /*
    *        -------DMA Register--------
    *        DMA Command Reg.(+40H)
    */
   #define READ_DIRECTION          BIT(7)
   #define WRITE_DIRECTION         0
   #define EN_DMA_INT              BIT(6)
   #define MAP_TO_MDL              BIT(5)
   #define DMA_DIAGNOSTIC          BIT(4)
   #define DMA_IDLE_CMD            0
   #define DMA_BLAST_CMD           BIT(0)
   #define DMA_ABORT_CMD           BIT(1)
   #define DMA_START_CMD           (BIT(1)|BIT(0))
   
   /*
    *        -------DMA Register--------
    *         DMA Status Reg.(+54H)
    */
   #define PCI_MS_ABORT            BIT(6)
   #define BLAST_COMPLETE          BIT(5)
   #define SCSI_INTERRUPT          BIT(4)
   #define DMA_XFER_DONE           BIT(3)
   #define DMA_XFER_ABORT          BIT(2)
   #define DMA_XFER_ERROR          BIT(1)
   #define POWER_DOWN              BIT(0)
   
   /*
    *        -------DMA Register--------
    *        DMA SCSI Bus and Ctrl.(+70H)
    *        EN_INT_ON_PCI_ABORT
    */
   
   /*
    *==========================================================
    *           SCSI Chip register address offset
    *==========================================================
    */
   #define CTCREG_LOW      0x00    /* (R)   current transfer count register low */
   #define STCREG_LOW      0x00    /* (W)   start transfer count register low */
   
   #define CTCREG_MID      0x04    /* (R)   current transfer count register
                                    * middle */
   #define STCREG_MID      0x04    /* (W)   start transfer count register middle */
   
   #define SCSIFIFOREG     0x08    /* (R/W) SCSI FIFO register */
   
   #define SCSICMDREG      0x0C    /* (R/W) SCSI command register */
   
   #define SCSISTATREG     0x10    /* (R)   SCSI status register */
   #define SCSIDESTIDREG   0x10    /* (W)   SCSI destination ID register */
   
   #define INTSTATREG      0x14    /* (R)   interrupt status register */
   #define SCSITIMEOUTREG  0x14    /* (W)   SCSI timeout register */
   
   
   #define INTERNSTATREG   0x18    /* (R)   internal state register */
   #define SYNCPERIOREG    0x18    /* (W)   synchronous transfer period register */
   
   #define CURRENTFIFOREG  0x1C    /* (R)   current FIFO/internal state register */
   #define SYNCOFFREG          0x1C/* (W)   synchronous transfer period register */
   
   #define CNTLREG1        0x20    /* (R/W) control register 1 */
   #define CLKFACTREG      0x24    /* (W)   clock factor register */
   #define CNTLREG2        0x2C    /* (R/W) control register 2 */
   #define CNTLREG3        0x30    /* (R/W) control register 3 */
   #define CNTLREG4        0x34    /* (R/W) control register 4 */
   
   #define CURTXTCNTREG    0x38    /* (R)   current transfer count register
                                    * high/part-unique ID code */
   #define STCREG_HIGH     0x38    /* (W)   Start current transfer count register
                                    * high */
   
   /*
    *********************************************************
    *
    *                 SCSI DMA register
    *
    *********************************************************
    */
   #define DMA_Cmd         0x40    /* (R/W) command register */
   #define DMA_XferCnt     0x44    /* (R/W) starting transfer count */
   #define DMA_XferAddr    0x48    /* (R/W) starting Physical address */
   #define DMA_Wk_ByteCntr 0x4C    /* ( R ) working byte counter */
   #define DMA_Wk_AddrCntr 0x50    /* ( R ) working address counter */
   #define DMA_Status      0x54    /* ( R ) status register */
   #define DMA_MDL_Addr    0x58    /* (R/W) starting memory descriptor list (MDL)
                                    * address */
   #define DMA_Wk_MDL_Cntr 0x5C    /* ( R ) working MDL counter */
   #define DMA_ScsiBusCtrl 0x70    /* (bits R/W) SCSI BUS and control */
   
   /* ******************************************************* */
   #define am_target       SCSISTATREG
   #define am_timeout      INTSTATREG
   #define am_seq_step     SYNCPERIOREG
   #define am_fifo_count   SYNCOFFREG
   
   
   #define amd_read8(amd, port)                            \
           bus_space_read_1((amd)->tag, (amd)->bsh, port)
   
   #define amd_read16(amd, port)                           \
           bus_space_read_2((amd)->tag, (amd)->bsh, port)
   
   #define amd_read32(amd, port)                           \
           bus_space_read_4((amd)->tag, (amd)->bsh, port)
   
   #define amd_write8(amd, port, value)                    \
           bus_space_write_1((amd)->tag, (amd)->bsh, port, value)
   
   #define amd_write8_multi(amd, port, ptr, len)           \
           bus_space_write_multi_1((amd)->tag, (amd)->bsh, port, ptr, len)
   
   #define amd_write16(amd, port, value)                   \
           bus_space_write_2((amd)->tag, (amd)->bsh, port, value)
   
   #define amd_write32(amd, port, value)                   \
           bus_space_write_4((amd)->tag, (amd)->bsh, port, value)
   
   #endif /* AMD_H */

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