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freebsd/sys/pci/amd.h
Justin T. Gibbs 1723e869c1 First cut at a driver for the amd53c974 PCI SCSI host adapter. This 
driver lacks error recovery and still needs more testing, but it's
about time I got it under revision control.

Submitted by:	 Tekram Inc.
Bus Space/DMA and cleanup: gibbs
1999-05-22 21:50:40 +00:00

580 lines
16 KiB
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/*
*********************************************************************
* 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.
*********************************************************************
*/
#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 {
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;
pcici_t config_id;
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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