Home | History | Annotate | Line # | Download | only in ic 
      1 /*	$NetBSD: dptvar.h,v 1.16 2012/10/27 17:18:20 chs Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1999, 2000, 2001 Andrew Doran <ad (at) NetBSD.org>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  *
     28  */
     29 
     30 #ifndef _IC_DPTVAR_H_
     31 #define _IC_DPTVAR_H_ 1
     32 
     33 /* Software parameters */
     34 #define DPT_SG_SIZE        	17
     35 #define	DPT_MAX_XFER		65536
     36 #define DPT_MAX_CCBS		256
     37 #define DPT_ABORT_TIMEOUT	2000	/* milliseconds */
     38 #define DPT_SCRATCH_SIZE	256	/* bytes */
     39 
     40 #define	CCB_OFF(sc,m)	((u_long)(m) - (u_long)((sc)->sc_ccbs))
     41 
     42 #define CCB_ABORT	0x01	/* abort has been issued on this CCB */
     43 #define CCB_INTR	0x02	/* HBA interrupted for this CCB */
     44 #define CCB_PRIVATE	0x04	/* ours; don't talk to scsipi when done */
     45 #define CCB_WAIT	0x08	/* sleeping on completion */
     46 
     47 struct dpt_ccb {
     48 	/* Data that will be touched by the HBA */
     49 	struct eata_cp	ccb_eata_cp;		/* EATA command packet */
     50 	struct eata_sg	ccb_sg[DPT_SG_SIZE];	/* SG element list */
     51 	struct scsi_sense_data ccb_sense;	/* SCSI sense data on error */
     52 
     53 	/* Data that will not be touched by the HBA */
     54 	volatile int	ccb_flg;		/* CCB flags */
     55 	int		ccb_timeout;		/* timeout in ms */
     56 	u_int32_t	ccb_ccbpa;		/* physical addr of this CCB */
     57 	bus_dmamap_t	ccb_dmamap_xfer;	/* dmamap for data xfers */
     58 	int		ccb_hba_status;		/* from status packet */
     59 	int		ccb_scsi_status;	/* from status packet */
     60 	int		ccb_id;			/* unique ID of this CCB */
     61 	SLIST_ENTRY(dpt_ccb) ccb_chain;		/* link to next CCB */
     62 	struct scsipi_xfer *ccb_xs;		/* initiating SCSI command */
     63 	struct eata_sp	*ccb_savesp;		/* saved status packet */
     64 };
     65 
     66 struct dpt_softc {
     67 	device_t	sc_dev;		/* generic device data */
     68 	kmutex_t	sc_lock;
     69 	struct scsipi_adapter sc_adapt;	/* scsipi adapter */
     70 	struct scsipi_channel sc_chans[3]; /* each channel */
     71 	bus_space_handle_t sc_ioh;	/* bus space handle */
     72 	bus_space_tag_t	sc_iot;		/* bus space tag */
     73 	bus_dma_tag_t	sc_dmat;	/* bus DMA tag */
     74 	bus_dmamap_t	sc_dmamap;	/* maps the CCBs */
     75 	void	 	*sc_ih;		/* interrupt handler cookie */
     76 	struct dpt_ccb	*sc_ccbs;	/* all our CCBs */
     77 	struct eata_sp	*sc_stp;	/* EATA status packet */
     78 	int		sc_stpoff;	/* status packet offset in dmamap */
     79 	u_int32_t	sc_stppa;	/* status packet physical address */
     80 	void *		sc_scr;		/* scratch area */
     81 	int		sc_scroff;	/* scratch area offset in dmamap */
     82 	u_int32_t	sc_scrpa;	/* scratch area physical address */
     83 	int		sc_hbaid[3];	/* ID of HBA on each channel */
     84 	int		sc_nccbs;	/* number of CCBs available */
     85 	SLIST_HEAD(, dpt_ccb) sc_ccb_free;/* free ccb list */
     86 	struct eata_cfg sc_ec;		/* EATA configuration data */
     87 	int		sc_bustype;	/* SysInfo bus type */
     88 	int		sc_isadrq;	/* ISA DRQ */
     89 	int		sc_isairq;	/* ISA IRQ */
     90 	int		sc_isaport;	/* ISA port */
     91 };
     92 
     93 void	dpt_init(struct dpt_softc *, const char *);
     94 int	dpt_intr(void *);
     95 int	dpt_readcfg(struct dpt_softc *);
     96 
     97 #endif	/* !defined _IC_DPTVAR_H_ */
     98