Initial import of arm32 port

1 files changed, 178 insertions, 0 deletions

diff --git a/sys/arch/arm32/podulebus/ncr5380var.h b/sys/arch/arm32/podulebus/ncr5380var.h
new file mode 100644
index 00000000000..0ad0637e1a0
--- /dev/null
+++ b/sys/arch/arm32/podulebus/ncr5380var.h
@@ -0,0 +1,178 @@
+/*	$NetBSD: ncr5380var.h,v 1.1 1996/01/31 23:26:12 mark Exp $	*/
+
+/*
+ * Copyright (c) 1995 David Jones, Gordon W. Ross
+ * Copyright (c) 1994 Jarle Greipsland
+ * All rights reserved.
+ *
+ * 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 authors may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ * 4. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by
+ *      David Jones and Gordon Ross
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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.
+ */
+
+/*
+ * This file defines the interface between the machine-dependent
+ * module and the machine-indepenedent ncr5380sbc.c module.
+ */
+
+#define SCI_CLR_INTR(sc)	(*(sc)->sci_iack)
+#define	SCI_BUSY(sc)		(*sc->sci_bus_csr & SCI_BUS_BSY)
+
+/* These are NOT artibtrary, but map to bits in sci_tcmd */
+#define PHASE_DATA_OUT	0x0
+#define PHASE_DATA_IN	0x1
+#define PHASE_COMMAND	0x2
+#define PHASE_STATUS	0x3
+#define PHASE_UNSPEC1	0x4
+#define PHASE_UNSPEC2	0x5
+#define PHASE_MSG_OUT	0x6
+#define PHASE_MSG_IN	0x7
+
+/*
+ * This illegal phase is used to prevent the 5380 from having
+ * a phase-match condition when we don't want one, such as
+ * when setting up the DMA engine or whatever...
+ */
+#define PHASE_INVALID	PHASE_UNSPEC1
+
+
+/* Per-request state.  This is required in order to support reselection. */
+struct sci_req {
+	struct		scsi_xfer *sr_xs;	/* Pointer to xfer struct, NULL=unused */
+	int		sr_target, sr_lun;	/* For fast access */
+	void		*sr_dma_hand;		/* Current DMA hnadle */
+	u_char		*sr_dataptr;		/* Saved data pointer */
+	int		sr_datalen;
+	int		sr_flags;		/* Internal error code */
+#define	SR_IMMED			1	/* Immediate command */
+#define	SR_SENSE			2	/* We are getting sense */
+#define	SR_OVERDUE			4	/* Timeout while not current */
+#define	SR_ERROR			8	/* Error occurred */
+	int		sr_status;		/* Status code from last cmd */
+};
+#define	SCI_OPENINGS	16		/* How many commands we can enqueue. */
+
+
+struct ncr5380_softc {
+	struct device	sc_dev;
+	struct		scsi_link sc_link;
+
+	/* Pointers to 5380 registers.  See ncr5380reg.h */
+	volatile u_char *sci_r0;
+	volatile u_char *sci_r1;
+	volatile u_char *sci_r2;
+	volatile u_char *sci_r3;
+	volatile u_char *sci_r4;
+	volatile u_char *sci_r5;
+	volatile u_char *sci_r6;
+	volatile u_char *sci_r7;
+
+	/* Functions set from MD code */
+	int		(*sc_pio_out) __P((struct ncr5380_softc *,
+					   int, int, u_char *));
+	int		(*sc_pio_in) __P((struct ncr5380_softc *,
+					  int, int, u_char *));
+	void		(*sc_dma_alloc) __P((struct ncr5380_softc *));
+	void		(*sc_dma_free) __P((struct ncr5380_softc *));
+
+	void		(*sc_dma_setup) __P((struct ncr5380_softc *));
+	void		(*sc_dma_start) __P((struct ncr5380_softc *));
+	void		(*sc_dma_poll) __P((struct ncr5380_softc *));
+	void		(*sc_dma_eop) __P((struct ncr5380_softc *));
+	void		(*sc_dma_stop) __P((struct ncr5380_softc *));
+
+	void		(*sc_intr_on) __P((struct ncr5380_softc *));
+	void		(*sc_intr_off) __P((struct ncr5380_softc *));
+
+	int		sc_flags;	/* Misc. flags and capabilities */
+#define	NCR5380_PERMIT_RESELECT		1  /* Allow disconnect/reselect */
+#define	NCR5380_FORCE_POLLING		2  /* Do not use interrupts. */
+
+	int 	sc_min_dma_len;	/* Smaller than this is done with PIO */
+
+	/* Begin MI shared data */
+
+	int		sc_state;
+#define	NCR_IDLE		   0	/* Ready for new work. */
+#define NCR_WORKING 	0x01	/* Some command is in progress. */
+#define	NCR_ABORTING	0x02	/* Bailing out */
+#define NCR_DOINGDMA	0x04	/* The FIFO data path is active! */
+#define NCR_DROP_MSGIN	0x10	/* Discard all msgs (parity err detected) */
+
+	/* The request that has the bus now. */
+	struct		sci_req *sc_current;
+
+	/* Active data pointer for current SCSI command. */
+	u_char		*sc_dataptr;
+	int		sc_datalen;
+
+	/* Begin MI private data */
+
+	/* The number of operations in progress on the bus */
+	volatile int	sc_ncmds;
+
+	/* Ring buffer of pending/active requests */
+	struct		sci_req sc_ring[SCI_OPENINGS];
+	int		sc_rr;		/* Round-robin scan pointer */
+
+	/* Active requests, by target/LUN */
+	struct		sci_req *sc_matrix[8][8];
+
+	/* Message stuff */
+	int	sc_prevphase;
+
+	u_int	sc_msgpriq;	/* Messages we want to send */
+	u_int	sc_msgoutq;	/* Messages sent during last MESSAGE OUT */
+	u_int	sc_msgout;	/* Message last transmitted */
+#define SEND_DEV_RESET		0x01
+#define SEND_PARITY_ERROR	0x02
+#define SEND_ABORT		0x04
+#define SEND_REJECT		0x08
+#define SEND_INIT_DET_ERR	0x10
+#define SEND_IDENTIFY  		0x20
+#define SEND_SDTR		0x40
+#define	SEND_WDTR		0x80
+#define NCR_MAX_MSG_LEN 8
+	u_char  sc_omess[NCR_MAX_MSG_LEN];
+	u_char	*sc_omp;		/* Outgoing message pointer */
+	u_char	sc_imess[NCR_MAX_MSG_LEN];
+	u_char	*sc_imp;		/* Incoming message pointer */
+
+};
+
+void	ncr5380_init __P((struct ncr5380_softc *));
+void	ncr5380_reset_scsibus __P((struct ncr5380_softc *));
+int 	ncr5380_intr __P((struct ncr5380_softc *));
+int 	ncr5380_scsi_cmd __P((struct scsi_xfer *));
+int 	ncr5380_pio_in __P((struct ncr5380_softc *, int, int, u_char *));
+int 	ncr5380_pio_out __P((struct ncr5380_softc *, int, int, u_char *));
+
+#ifdef	DEBUG
+struct ncr5380_softc *ncr5380_debug_sc;
+void ncr5380_trace __P((char *msg, long val));
+#define	NCR_TRACE(msg, val) ncr5380_trace(msg, val)
+#else
+#define	NCR_TRACE(msg, val)	/* nada */
+#endif