380 lines
9.7 KiB
C
380 lines
9.7 KiB
C
/*
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* Sun3 SCSI stuff by Erik Verbruggen (erik@bigmama.xtdnet.nl)
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*
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* Sun3 DMA additions by Sam Creasey (sammy@sammy.net)
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*
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* Adapted from mac_scsinew.h:
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*/
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/*
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* Cumana Generic NCR5380 driver defines
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*
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* Copyright 1993, Drew Eckhardt
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* Visionary Computing
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* (Unix and Linux consulting and custom programming)
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* drew@colorado.edu
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* +1 (303) 440-4894
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*
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* ALPHA RELEASE 1.
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*
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* For more information, please consult
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*
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* NCR 5380 Family
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* SCSI Protocol Controller
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* Databook
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*
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* NCR Microelectronics
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* 1635 Aeroplaza Drive
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* Colorado Springs, CO 80916
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* 1+ (719) 578-3400
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* 1+ (800) 334-5454
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*/
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/*
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* $Log: cumana_NCR5380.h,v $
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*/
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#ifndef SUN3_NCR5380_H
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#define SUN3_NCR5380_H
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#define SUN3SCSI_PUBLIC_RELEASE 1
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/*
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* Int: level 2 autovector
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* IO: type 1, base 0x00140000, 5 bits phys space: A<4..0>
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*/
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#define IRQ_SUN3_SCSI 2
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#define IOBASE_SUN3_SCSI 0x00140000
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#define IOBASE_SUN3_VMESCSI 0xff200000
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static int sun3scsi_abort(struct scsi_cmnd *);
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static int sun3scsi_detect (struct scsi_host_template *);
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static const char *sun3scsi_info (struct Scsi_Host *);
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static int sun3scsi_bus_reset(struct scsi_cmnd *);
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static int sun3scsi_queue_command(struct Scsi_Host *, struct scsi_cmnd *);
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static int sun3scsi_release (struct Scsi_Host *);
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#ifndef CMD_PER_LUN
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#define CMD_PER_LUN 2
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#endif
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#ifndef CAN_QUEUE
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#define CAN_QUEUE 16
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#endif
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#ifndef SG_TABLESIZE
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#define SG_TABLESIZE SG_NONE
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#endif
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#ifndef MAX_TAGS
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#define MAX_TAGS 32
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#endif
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#ifndef USE_TAGGED_QUEUING
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#define USE_TAGGED_QUEUING 1
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#endif
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#include <scsi/scsicam.h>
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#ifdef SUN3_SCSI_VME
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#define SUN3_SCSI_NAME "Sun3 NCR5380 VME SCSI"
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#else
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#define SUN3_SCSI_NAME "Sun3 NCR5380 SCSI"
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#endif
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#ifndef HOSTS_C
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#define NCR5380_implementation_fields \
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int port, ctrl
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#define NCR5380_local_declare() \
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struct Scsi_Host *_instance
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#define NCR5380_setup(instance) \
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_instance = instance
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#define NCR5380_read(reg) sun3scsi_read(reg)
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#define NCR5380_write(reg, value) sun3scsi_write(reg, value)
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#define NCR5380_intr sun3scsi_intr
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#define NCR5380_queue_command sun3scsi_queue_command
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#define NCR5380_bus_reset sun3scsi_bus_reset
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#define NCR5380_abort sun3scsi_abort
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#define NCR5380_proc_info sun3scsi_proc_info
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#define NCR5380_dma_xfer_len(i, cmd, phase) \
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sun3scsi_dma_xfer_len(cmd->SCp.this_residual,cmd,((phase) & SR_IO) ? 0 : 1)
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#define NCR5380_dma_write_setup(instance, data, count) sun3scsi_dma_setup(data, count, 1)
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#define NCR5380_dma_read_setup(instance, data, count) sun3scsi_dma_setup(data, count, 0)
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#define NCR5380_dma_residual sun3scsi_dma_residual
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#define BOARD_NORMAL 0
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#define BOARD_NCR53C400 1
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/* additional registers - mainly DMA control regs */
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/* these start at regbase + 8 -- directly after the NCR regs */
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struct sun3_dma_regs {
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unsigned short dma_addr_hi; /* vme only */
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unsigned short dma_addr_lo; /* vme only */
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unsigned short dma_count_hi; /* vme only */
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unsigned short dma_count_lo; /* vme only */
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unsigned short udc_data; /* udc dma data reg (obio only) */
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unsigned short udc_addr; /* uda dma addr reg (obio only) */
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unsigned short fifo_data; /* fifo data reg, holds extra byte on
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odd dma reads */
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unsigned short fifo_count;
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unsigned short csr; /* control/status reg */
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unsigned short bpack_hi; /* vme only */
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unsigned short bpack_lo; /* vme only */
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unsigned short ivect; /* vme only */
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unsigned short fifo_count_hi; /* vme only */
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};
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/* ucd chip specific regs - live in dvma space */
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struct sun3_udc_regs {
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unsigned short rsel; /* select regs to load */
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unsigned short addr_hi; /* high word of addr */
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unsigned short addr_lo; /* low word */
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unsigned short count; /* words to be xfer'd */
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unsigned short mode_hi; /* high word of channel mode */
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unsigned short mode_lo; /* low word of channel mode */
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};
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/* addresses of the udc registers */
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#define UDC_MODE 0x38
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#define UDC_CSR 0x2e /* command/status */
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#define UDC_CHN_HI 0x26 /* chain high word */
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#define UDC_CHN_LO 0x22 /* chain lo word */
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#define UDC_CURA_HI 0x1a /* cur reg A high */
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#define UDC_CURA_LO 0x0a /* cur reg A low */
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#define UDC_CURB_HI 0x12 /* cur reg B high */
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#define UDC_CURB_LO 0x02 /* cur reg B low */
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#define UDC_MODE_HI 0x56 /* mode reg high */
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#define UDC_MODE_LO 0x52 /* mode reg low */
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#define UDC_COUNT 0x32 /* words to xfer */
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/* some udc commands */
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#define UDC_RESET 0
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#define UDC_CHN_START 0xa0 /* start chain */
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#define UDC_INT_ENABLE 0x32 /* channel 1 int on */
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/* udc mode words */
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#define UDC_MODE_HIWORD 0x40
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#define UDC_MODE_LSEND 0xc2
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#define UDC_MODE_LRECV 0xd2
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/* udc reg selections */
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#define UDC_RSEL_SEND 0x282
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#define UDC_RSEL_RECV 0x182
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/* bits in csr reg */
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#define CSR_DMA_ACTIVE 0x8000
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#define CSR_DMA_CONFLICT 0x4000
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#define CSR_DMA_BUSERR 0x2000
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#define CSR_FIFO_EMPTY 0x400 /* fifo flushed? */
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#define CSR_SDB_INT 0x200 /* sbc interrupt pending */
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#define CSR_DMA_INT 0x100 /* dma interrupt pending */
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#define CSR_LEFT 0xc0
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#define CSR_LEFT_3 0xc0
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#define CSR_LEFT_2 0x80
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#define CSR_LEFT_1 0x40
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#define CSR_PACK_ENABLE 0x20
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#define CSR_DMA_ENABLE 0x10
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#define CSR_SEND 0x8 /* 1 = send 0 = recv */
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#define CSR_FIFO 0x2 /* reset fifo */
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#define CSR_INTR 0x4 /* interrupt enable */
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#define CSR_SCSI 0x1
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#define VME_DATA24 0x3d00
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// debugging printk's, taken from atari_scsi.h
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/* Debugging printk definitions:
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*
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* ARB -> arbitration
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* ASEN -> auto-sense
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* DMA -> DMA
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* HSH -> PIO handshake
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* INF -> information transfer
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* INI -> initialization
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* INT -> interrupt
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* LNK -> linked commands
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* MAIN -> NCR5380_main() control flow
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* NDAT -> no data-out phase
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* NWR -> no write commands
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* PIO -> PIO transfers
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* PDMA -> pseudo DMA (unused on Atari)
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* QU -> queues
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* RSL -> reselections
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* SEL -> selections
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* USL -> usleep cpde (unused on Atari)
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* LBS -> last byte sent (unused on Atari)
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* RSS -> restarting of selections
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* EXT -> extended messages
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* ABRT -> aborting and resetting
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* TAG -> queue tag handling
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* MER -> merging of consec. buffers
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*
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*/
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#include "NCR5380.h"
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#if NDEBUG & NDEBUG_ARBITRATION
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#define ARB_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define ARB_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_AUTOSENSE
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#define ASEN_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define ASEN_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_DMA
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#define DMA_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define DMA_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_HANDSHAKE
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#define HSH_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define HSH_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_INFORMATION
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#define INF_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define INF_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_INIT
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#define INI_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define INI_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_INTR
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#define INT_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define INT_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_LINKED
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#define LNK_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define LNK_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_MAIN
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#define MAIN_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define MAIN_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_NO_DATAOUT
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#define NDAT_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define NDAT_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_NO_WRITE
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#define NWR_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define NWR_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_PIO
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#define PIO_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define PIO_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_PSEUDO_DMA
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#define PDMA_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define PDMA_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_QUEUES
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#define QU_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define QU_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_RESELECTION
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#define RSL_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define RSL_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_SELECTION
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#define SEL_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define SEL_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_USLEEP
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#define USL_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define USL_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_LAST_BYTE_SENT
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#define LBS_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define LBS_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_RESTART_SELECT
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#define RSS_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define RSS_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_EXTENDED
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#define EXT_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define EXT_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_ABORT
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#define ABRT_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define ABRT_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_TAGS
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#define TAG_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define TAG_PRINTK(format, args...)
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#endif
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#if NDEBUG & NDEBUG_MERGING
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#define MER_PRINTK(format, args...) \
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printk(KERN_DEBUG format , ## args)
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#else
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#define MER_PRINTK(format, args...)
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#endif
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/* conditional macros for NCR5380_print_{,phase,status} */
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#define NCR_PRINT(mask) \
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((NDEBUG & (mask)) ? NCR5380_print(instance) : (void)0)
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#define NCR_PRINT_PHASE(mask) \
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((NDEBUG & (mask)) ? NCR5380_print_phase(instance) : (void)0)
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#define NCR_PRINT_STATUS(mask) \
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((NDEBUG & (mask)) ? NCR5380_print_status(instance) : (void)0)
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#endif /* ndef HOSTS_C */
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#endif /* SUN3_NCR5380_H */
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