1/*	$NetBSD: dptvar.h,v 1.15 2011/08/07 13:39:24 rmind Exp $	*/
2
3/*
4 * Copyright (c) 1999, 2000, 2001 Andrew Doran <ad@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
47struct 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
66struct 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
93void	dpt_init(struct dpt_softc *, const char *);
94int	dpt_intr(void *);
95int	dpt_readcfg(struct dpt_softc *);
96
97#endif	/* !defined _IC_DPTVAR_H_ */
98