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- /*
- * Mach Operating System
- * Copyright (c) 1991,1990,1989 Carnegie Mellon University
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
- * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
- * School of Computer Science
- * Carnegie Mellon University
- * Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie the
- * rights to redistribute these changes.
- */
- /*
- * HISTORY
- * $Log: scsi_5380.h,v $
- * Revision 1.2 1993/11/29 00:38:38 briggs
- * Added signal.h for -current. The rest is formatting changes.
- *
- * Revision 2.3 91/08/24 12:25:10 af
- * Moved padding of regmap in impl file.
- * [91/08/02 04:22:39 af]
- *
- * Revision 2.2 91/06/19 16:28:35 rvb
- * From the NCR data sheets
- * "NCR 5380 Family, SCSI Protocol Controller Data Manual"
- * NCR Microelectronics Division, Colorado Spring, 6/98 T01891L
- * [91/04/21 af]
- *
- */
- /*
- * File: scsi_5380.h
- * Author: Alessandro Forin, Carnegie Mellon University
- * Date: 5/91
- *
- * Defines for the NCR 5380 (SCSI chip), aka Am5380
- */
-
- /*
- * Register map
- */
-
- typedef struct {
- volatile unsigned char sci_data; /* r: Current data */
- #define sci_odata sci_data /* w: Out data */
- PAD(pad0);
-
- volatile unsigned char sci_icmd; /* rw: Initiator command */
- PAD(pad1);
-
- volatile unsigned char sci_mode; /* rw: Mode */
- PAD(pad2);
-
- volatile unsigned char sci_tcmd; /* rw: Target command */
- PAD(pad3);
-
- volatile unsigned char sci_bus_csr; /* r: Bus Status */
- #define sci_sel_enb sci_bus_csr /* w: Select enable */
- PAD(pad4);
-
- volatile unsigned char sci_csr; /* r: Status */
- #define sci_dma_send sci_csr /* w: Start dma send data */
- PAD(pad5);
-
- volatile unsigned char sci_idata; /* r: Input data */
- #define sci_trecv sci_idata /* w: Start dma receive, target */
- PAD(pad6);
-
- volatile unsigned char sci_iack; /* r: Interrupt Acknowledge */
- #define sci_irecv sci_iack /* w: Start dma receive, initiator */
- } sci_regmap_t;
-
-
- /*
- * Initiator command register
- */
-
- #define SCI_ICMD_DATA 0x01 /* rw: Assert data bus */
- #define SCI_ICMD_ATN 0x02 /* rw: Assert ATN signal */
- #define SCI_ICMD_SEL 0x04 /* rw: Assert SEL signal */
- #define SCI_ICMD_BSY 0x08 /* rw: Assert BSY signal */
- #define SCI_ICMD_ACK 0x10 /* rw: Assert ACK signal */
- #define SCI_ICMD_LST 0x20 /* r: Lost arbitration */
- #define SCI_ICMD_DIFF SCI_ICMD_LST /* w: Differential cable */
- #define SCI_ICMD_AIP 0x40 /* r: Arbitration in progress */
- #define SCI_ICMD_TEST SCI_ICMD_AIP /* w: Test mode */
- #define SCI_ICMD_RST 0x80 /* rw: Assert RST signal */
-
-
- /*
- * Mode register
- */
-
- #define SCI_MODE_ARB 0x01 /* rw: Start arbitration */
- #define SCI_MODE_DMA 0x02 /* rw: Enable DMA xfers */
- #define SCI_MODE_MONBSY 0x04 /* rw: Monitor BSY signal */
- #define SCI_MODE_DMA_IE 0x08 /* rw: Enable DMA complete interrupt */
- #define SCI_MODE_PERR_IE 0x10 /* rw: Interrupt on parity errors */
- #define SCI_MODE_PAR_CHK 0x20 /* rw: Check parity */
- #define SCI_MODE_TARGET 0x40 /* rw: Target mode (Initiator if 0) */
- #define SCI_MODE_BLOCKDMA 0x80 /* rw: Block-mode DMA handshake (MBZ) */
-
-
- /*
- * Target command register
- */
-
- #define SCI_TCMD_IO 0x01 /* rw: Assert I/O signal */
- #define SCI_TCMD_CD 0x02 /* rw: Assert C/D signal */
- #define SCI_TCMD_MSG 0x04 /* rw: Assert MSG signal */
- #define SCI_TCMD_PHASE_MASK 0x07 /* r: Mask for current bus phase */
- #define SCI_TCMD_REQ 0x08 /* rw: Assert REQ signal */
- #define SCI_TCMD_LAST_SENT 0x80 /* ro: Last byte was xferred
- * (not on 5380/1) */
-
- #define SCI_PHASE(x) SCSI_PHASE(x)
-
- /*
- * Current (SCSI) Bus status
- */
-
- #define SCI_BUS_DBP 0x01 /* r: Data Bus parity */
- #define SCI_BUS_SEL 0x02 /* r: SEL signal */
- #define SCI_BUS_IO 0x04 /* r: I/O signal */
- #define SCI_BUS_CD 0x08 /* r: C/D signal */
- #define SCI_BUS_MSG 0x10 /* r: MSG signal */
- #define SCI_BUS_REQ 0x20 /* r: REQ signal */
- #define SCI_BUS_BSY 0x40 /* r: BSY signal */
- #define SCI_BUS_RST 0x80 /* r: RST signal */
-
- #define SCI_CUR_PHASE(x) SCSI_PHASE((x)>>2)
-
- /*
- * Bus and Status register
- */
-
- #define SCI_CSR_ACK 0x01 /* r: ACK signal */
- #define SCI_CSR_ATN 0x02 /* r: ATN signal */
- #define SCI_CSR_DISC 0x04 /* r: Disconnected (BSY==0) */
- #define SCI_CSR_PHASE_MATCH 0x08 /* r: Bus and SCI_TCMD match */
- #define SCI_CSR_INT 0x10 /* r: Interrupt request */
- #define SCI_CSR_PERR 0x20 /* r: Parity error */
- #define SCI_CSR_DREQ 0x40 /* r: DMA request */
- #define SCI_CSR_DONE 0x80 /* r: DMA count is zero */
-
-