393 lines
12 KiB
C
393 lines
12 KiB
C
/*=======================================================/
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Header file for nsp_cs.c
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By: YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>
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Ver.1.0 : Cut unused lines.
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Ver 0.1 : Initial version.
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This software may be used and distributed according to the terms of
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the GNU General Public License.
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=========================================================*/
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#ifndef __nsp_cs__
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#define __nsp_cs__
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/* for debugging */
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//#define NSP_DEBUG 9
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/*
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#define static
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#define inline
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*/
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/************************************
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* Some useful macros...
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*/
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/* SCSI initiator must be ID 7 */
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#define NSP_INITIATOR_ID 7
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#define NSP_SELTIMEOUT 200
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/***************************************************************************
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* register definitions
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***************************************************************************/
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/*========================================================================
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* base register
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========================================================================*/
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#define IRQCONTROL 0x00 /* R */
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# define IRQCONTROL_RESELECT_CLEAR BIT(0)
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# define IRQCONTROL_PHASE_CHANGE_CLEAR BIT(1)
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# define IRQCONTROL_TIMER_CLEAR BIT(2)
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# define IRQCONTROL_FIFO_CLEAR BIT(3)
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# define IRQCONTROL_ALLMASK 0xff
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# define IRQCONTROL_ALLCLEAR (IRQCONTROL_RESELECT_CLEAR | \
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IRQCONTROL_PHASE_CHANGE_CLEAR | \
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IRQCONTROL_TIMER_CLEAR | \
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IRQCONTROL_FIFO_CLEAR )
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# define IRQCONTROL_IRQDISABLE 0xf0
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#define IRQSTATUS 0x00 /* W */
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# define IRQSTATUS_SCSI BIT(0)
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# define IRQSTATUS_TIMER BIT(2)
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# define IRQSTATUS_FIFO BIT(3)
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# define IRQSTATUS_MASK 0x0f
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#define IFSELECT 0x01 /* W */
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# define IF_IFSEL BIT(0)
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# define IF_REGSEL BIT(2)
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#define FIFOSTATUS 0x01 /* R */
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# define FIFOSTATUS_CHIP_REVISION_MASK 0x0f
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# define FIFOSTATUS_CHIP_ID_MASK 0x70
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# define FIFOSTATUS_FULL_EMPTY BIT(7)
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#define INDEXREG 0x02 /* R/W */
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#define DATAREG 0x03 /* R/W */
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#define FIFODATA 0x04 /* R/W */
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#define FIFODATA1 0x05 /* R/W */
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#define FIFODATA2 0x06 /* R/W */
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#define FIFODATA3 0x07 /* R/W */
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/*====================================================================
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* indexed register
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====================================================================*/
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#define EXTBUSCTRL 0x10 /* R/W,deleted */
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#define CLOCKDIV 0x11 /* R/W */
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# define CLOCK_40M 0x02
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# define CLOCK_20M 0x01
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# define FAST_20 BIT(2)
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#define TERMPWRCTRL 0x13 /* R/W */
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# define POWER_ON BIT(0)
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#define SCSIIRQMODE 0x15 /* R/W */
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# define SCSI_PHASE_CHANGE_EI BIT(0)
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# define RESELECT_EI BIT(4)
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# define FIFO_IRQ_EI BIT(5)
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# define SCSI_RESET_IRQ_EI BIT(6)
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#define IRQPHASESENCE 0x16 /* R */
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# define LATCHED_MSG BIT(0)
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# define LATCHED_IO BIT(1)
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# define LATCHED_CD BIT(2)
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# define LATCHED_BUS_FREE BIT(3)
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# define PHASE_CHANGE_IRQ BIT(4)
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# define RESELECT_IRQ BIT(5)
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# define FIFO_IRQ BIT(6)
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# define SCSI_RESET_IRQ BIT(7)
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#define TIMERCOUNT 0x17 /* R/W */
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#define SCSIBUSCTRL 0x18 /* R/W */
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# define SCSI_SEL BIT(0)
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# define SCSI_RST BIT(1)
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# define SCSI_DATAOUT_ENB BIT(2)
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# define SCSI_ATN BIT(3)
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# define SCSI_ACK BIT(4)
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# define SCSI_BSY BIT(5)
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# define AUTODIRECTION BIT(6)
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# define ACKENB BIT(7)
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#define SCSIBUSMON 0x19 /* R */
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#define SETARBIT 0x1A /* W */
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# define ARBIT_GO BIT(0)
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# define ARBIT_FLAG_CLEAR BIT(1)
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#define ARBITSTATUS 0x1A /* R */
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/*# define ARBIT_GO BIT(0)*/
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# define ARBIT_WIN BIT(1)
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# define ARBIT_FAIL BIT(2)
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# define RESELECT_FLAG BIT(3)
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#define PARITYCTRL 0x1B /* W */
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#define PARITYSTATUS 0x1B /* R */
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#define COMMANDCTRL 0x1C /* W */
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# define CLEAR_COMMAND_POINTER BIT(0)
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# define AUTO_COMMAND_GO BIT(1)
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#define RESELECTID 0x1C /* R */
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#define COMMANDDATA 0x1D /* R/W */
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#define POINTERCLR 0x1E /* W */
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# define POINTER_CLEAR BIT(0)
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# define ACK_COUNTER_CLEAR BIT(1)
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# define REQ_COUNTER_CLEAR BIT(2)
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# define HOST_COUNTER_CLEAR BIT(3)
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# define READ_SOURCE (BIT(4) | BIT(5))
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# define ACK_COUNTER (0)
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# define REQ_COUNTER (BIT(4))
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# define HOST_COUNTER (BIT(5))
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#define TRANSFERCOUNT 0x1E /* R */
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#define TRANSFERMODE 0x20 /* R/W */
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# define MODE_MEM8 BIT(0)
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# define MODE_MEM32 BIT(1)
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# define MODE_ADR24 BIT(2)
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# define MODE_ADR32 BIT(3)
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# define MODE_IO8 BIT(4)
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# define MODE_IO32 BIT(5)
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# define TRANSFER_GO BIT(6)
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# define BRAIND BIT(7)
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#define SYNCREG 0x21 /* R/W */
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# define SYNCREG_OFFSET_MASK 0x0f
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# define SYNCREG_PERIOD_MASK 0xf0
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# define SYNCREG_PERIOD_SHIFT 4
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#define SCSIDATALATCH 0x22 /* W */
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#define SCSIDATAIN 0x22 /* R */
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#define SCSIDATAWITHACK 0x23 /* R/W */
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#define SCAMCONTROL 0x24 /* W */
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#define SCAMSTATUS 0x24 /* R */
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#define SCAMDATA 0x25 /* R/W */
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#define OTHERCONTROL 0x26 /* R/W */
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# define TPL_ROM_WRITE_EN BIT(0)
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# define TPWR_OUT BIT(1)
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# define TPWR_SENSE BIT(2)
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# define RA8_CONTROL BIT(3)
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#define ACKWIDTH 0x27 /* R/W */
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#define CLRTESTPNT 0x28 /* W */
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#define ACKCNTLD 0x29 /* W */
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#define REQCNTLD 0x2A /* W */
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#define HSTCNTLD 0x2B /* W */
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#define CHECKSUM 0x2C /* R/W */
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/************************************************************************
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* Input status bit definitions.
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************************************************************************/
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#define S_MESSAGE BIT(0) /* Message line from SCSI bus */
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#define S_IO BIT(1) /* Input/Output line from SCSI bus */
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#define S_CD BIT(2) /* Command/Data line from SCSI bus */
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#define S_BUSY BIT(3) /* Busy line from SCSI bus */
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#define S_ACK BIT(4) /* Acknowledge line from SCSI bus */
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#define S_REQUEST BIT(5) /* Request line from SCSI bus */
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#define S_SELECT BIT(6) /* */
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#define S_ATN BIT(7) /* */
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/***********************************************************************
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* Useful Bus Monitor status combinations.
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***********************************************************************/
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#define BUSMON_SEL S_SELECT
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#define BUSMON_BSY S_BUSY
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#define BUSMON_REQ S_REQUEST
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#define BUSMON_IO S_IO
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#define BUSMON_ACK S_ACK
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#define BUSMON_BUS_FREE 0
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#define BUSMON_COMMAND ( S_BUSY | S_CD | S_REQUEST )
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#define BUSMON_MESSAGE_IN ( S_BUSY | S_CD | S_IO | S_MESSAGE | S_REQUEST )
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#define BUSMON_MESSAGE_OUT ( S_BUSY | S_CD | S_MESSAGE | S_REQUEST )
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#define BUSMON_DATA_IN ( S_BUSY | S_IO | S_REQUEST )
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#define BUSMON_DATA_OUT ( S_BUSY | S_REQUEST )
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#define BUSMON_STATUS ( S_BUSY | S_CD | S_IO | S_REQUEST )
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#define BUSMON_SELECT ( S_IO | S_SELECT )
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#define BUSMON_RESELECT ( S_IO | S_SELECT )
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#define BUSMON_PHASE_MASK ( S_CD | S_IO | S_MESSAGE | S_SELECT )
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#define BUSPHASE_SELECT ( BUSMON_SELECT & BUSMON_PHASE_MASK )
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#define BUSPHASE_COMMAND ( BUSMON_COMMAND & BUSMON_PHASE_MASK )
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#define BUSPHASE_MESSAGE_IN ( BUSMON_MESSAGE_IN & BUSMON_PHASE_MASK )
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#define BUSPHASE_MESSAGE_OUT ( BUSMON_MESSAGE_OUT & BUSMON_PHASE_MASK )
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#define BUSPHASE_DATA_IN ( BUSMON_DATA_IN & BUSMON_PHASE_MASK )
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#define BUSPHASE_DATA_OUT ( BUSMON_DATA_OUT & BUSMON_PHASE_MASK )
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#define BUSPHASE_STATUS ( BUSMON_STATUS & BUSMON_PHASE_MASK )
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/*====================================================================*/
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typedef struct scsi_info_t {
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struct pcmcia_device *p_dev;
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struct Scsi_Host *host;
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int stop;
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} scsi_info_t;
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/* synchronous transfer negotiation data */
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typedef struct _sync_data {
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unsigned int SyncNegotiation;
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#define SYNC_NOT_YET 0
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#define SYNC_OK 1
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#define SYNC_NG 2
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unsigned int SyncPeriod;
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unsigned int SyncOffset;
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unsigned char SyncRegister;
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unsigned char AckWidth;
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} sync_data;
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typedef struct _nsp_hw_data {
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unsigned int BaseAddress;
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unsigned int NumAddress;
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unsigned int IrqNumber;
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unsigned long MmioAddress;
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#define NSP_MMIO_OFFSET 0x0800
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unsigned long MmioLength;
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unsigned char ScsiClockDiv;
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unsigned char TransferMode;
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int TimerCount;
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int SelectionTimeOut;
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struct scsi_cmnd *CurrentSC;
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//int CurrnetTarget;
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int FifoCount;
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#define MSGBUF_SIZE 20
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unsigned char MsgBuffer[MSGBUF_SIZE];
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int MsgLen;
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#define N_TARGET 8
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sync_data Sync[N_TARGET];
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char nspinfo[110]; /* description */
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spinlock_t Lock;
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scsi_info_t *ScsiInfo; /* attach <-> detect glue */
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#ifdef NSP_DEBUG
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int CmdId; /* Accepted command serial number.
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Used for debugging. */
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#endif
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} nsp_hw_data;
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/****************************************************************************
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*
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*/
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/* Card service functions */
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static void nsp_cs_detach (struct pcmcia_device *p_dev);
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static void nsp_cs_release(struct pcmcia_device *link);
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static int nsp_cs_config (struct pcmcia_device *link);
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/* Linux SCSI subsystem specific functions */
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static struct Scsi_Host *nsp_detect (struct scsi_host_template *sht);
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static const char *nsp_info (struct Scsi_Host *shpnt);
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static int nsp_show_info (struct seq_file *m,
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struct Scsi_Host *host);
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static int nsp_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *SCpnt);
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/* Error handler */
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/*static int nsp_eh_abort (struct scsi_cmnd *SCpnt);*/
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/*static int nsp_eh_device_reset(struct scsi_cmnd *SCpnt);*/
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static int nsp_eh_bus_reset (struct scsi_cmnd *SCpnt);
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static int nsp_eh_host_reset (struct scsi_cmnd *SCpnt);
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static int nsp_bus_reset (nsp_hw_data *data);
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/* */
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static int nsphw_init (nsp_hw_data *data);
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static int nsphw_start_selection(struct scsi_cmnd *SCpnt);
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static void nsp_start_timer (struct scsi_cmnd *SCpnt, int time);
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static int nsp_fifo_count (struct scsi_cmnd *SCpnt);
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static void nsp_pio_read (struct scsi_cmnd *SCpnt);
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static void nsp_pio_write (struct scsi_cmnd *SCpnt);
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static int nsp_nexus (struct scsi_cmnd *SCpnt);
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static void nsp_scsi_done (struct scsi_cmnd *SCpnt);
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static int nsp_analyze_sdtr (struct scsi_cmnd *SCpnt);
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static int nsp_negate_signal (struct scsi_cmnd *SCpnt,
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unsigned char mask, char *str);
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static int nsp_expect_signal (struct scsi_cmnd *SCpnt,
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unsigned char current_phase,
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unsigned char mask);
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static int nsp_xfer (struct scsi_cmnd *SCpnt, int phase);
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static int nsp_dataphase_bypass (struct scsi_cmnd *SCpnt);
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static int nsp_reselected (struct scsi_cmnd *SCpnt);
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static struct Scsi_Host *nsp_detect(struct scsi_host_template *sht);
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/* Interrupt handler */
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//static irqreturn_t nspintr(int irq, void *dev_id);
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/* Module entry point*/
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static int __init nsp_cs_init(void);
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static void __exit nsp_cs_exit(void);
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/* Debug */
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#ifdef NSP_DEBUG
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static void show_command (struct scsi_cmnd *SCpnt);
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static void show_phase (struct scsi_cmnd *SCpnt);
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static void show_busphase(unsigned char stat);
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static void show_message (nsp_hw_data *data);
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#else
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# define show_command(ptr) /* */
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# define show_phase(SCpnt) /* */
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# define show_busphase(stat) /* */
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# define show_message(data) /* */
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#endif
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/*
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* SCSI phase
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*/
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enum _scsi_phase {
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PH_UNDETERMINED ,
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PH_ARBSTART ,
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PH_SELSTART ,
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PH_SELECTED ,
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PH_COMMAND ,
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PH_DATA ,
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PH_STATUS ,
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PH_MSG_IN ,
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PH_MSG_OUT ,
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PH_DISCONNECT ,
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PH_RESELECT ,
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PH_ABORT ,
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PH_RESET
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};
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enum _data_in_out {
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IO_UNKNOWN,
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IO_IN,
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IO_OUT
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};
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enum _burst_mode {
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BURST_IO8 = 0,
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BURST_IO32 = 1,
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BURST_MEM32 = 2,
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};
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/**************************************************************************
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* SCSI messaage
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*/
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#define MSG_COMMAND_COMPLETE 0x00
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#define MSG_EXTENDED 0x01
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#define MSG_ABORT 0x06
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#define MSG_NO_OPERATION 0x08
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#define MSG_BUS_DEVICE_RESET 0x0c
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#define MSG_EXT_SDTR 0x01
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/* scatter-gather table */
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# define BUFFER_ADDR ((char *)((sg_virt(SCpnt->SCp.buffer))))
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#endif /*__nsp_cs__*/
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/* end */
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