1 /* $NetBSD: tcdsvar.h,v 1.6 2009/05/12 14:47:04 cegger Exp $ */
2 
3 /*
4  * Copyright (c) 1995, 1996 Carnegie-Mellon University.
5  * All rights reserved.
6  *
7  * Author: Chris G. Demetriou
8  *
9  * Permission to use, copy, modify and distribute this software and
10  * its documentation is hereby granted, provided that both the copyright
11  * notice and this permission notice appear in all copies of the
12  * software, derivative works or modified versions, and any portions
13  * thereof, and that both notices appear in supporting documentation.
14  *
15  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
16  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
17  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
18  *
19  * Carnegie Mellon requests users of this software to return to
20  *
21  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
22  *  School of Computer Science
23  *  Carnegie Mellon University
24  *  Pittsburgh PA 15213-3890
25  *
26  * any improvements or extensions that they make and grant Carnegie the
27  * rights to redistribute these changes.
28  */
29 
30 struct tcds_slotconfig {
31 	/*
32 	 * Bookkeeping information
33 	 */
34 	int	sc_slot;
35 
36 	bus_space_tag_t sc_bst;			/* to frob TCDS regs */
37 	bus_space_handle_t sc_bsh;
38 
39 	int	(*sc_intrhand)(void *);	/* intr. handler */
40 	void	*sc_intrarg;			/* intr. handler arg. */
41 	struct evcnt sc_evcnt;			/* intr. count */
42 	char	sc_name[8];			/* ev_name */
43 
44 	/*
45 	 * Sets of bits in TCDS CIR and IMER that enable/check
46 	 * various things.
47 	 */
48 	u_int32_t sc_resetbits;
49 	u_int32_t sc_intrmaskbits;
50 	u_int32_t sc_intrbits;
51 	u_int32_t sc_dmabits;
52 	u_int32_t sc_errorbits;
53 
54 	/*
55 	 * Offsets to slot-specific DMA resources.
56 	 */
57 	bus_size_t sc_sda;
58 	bus_size_t sc_dic;
59 	bus_size_t sc_dud0;
60 	bus_size_t sc_dud1;
61 };
62 
63 struct tcdsdev_attach_args {
64 	bus_space_tag_t tcdsda_bst;		/* bus space tag */
65 	bus_space_handle_t tcdsda_bsh;		/* bus space handle */
66 	bus_dma_tag_t tcdsda_dmat;		/* bus dma tag */
67 	struct tcds_slotconfig *tcdsda_sc;	/* slot configuration */
68 	int	tcdsda_chip;			/* chip number */
69 	int	tcdsda_id;			/* SCSI ID */
70 	u_int	tcdsda_freq;			/* chip frequency */
71 	int	tcdsda_period;			/* min. sync period */
72 	int	tcdsda_variant;			/* NCR chip variant */
73 	int	tcdsda_fast;			/* chip does Fast mode */
74 };
75 
76 /*
77  * TCDS functions.
78  */
79 void	tcds_intr_establish(device_t, int, int (*)(void *), void *);
80 void	tcds_intr_disestablish(device_t, int);
81 void	tcds_dma_enable(struct tcds_slotconfig *, int);
82 void	tcds_scsi_enable(struct tcds_slotconfig *, int);
83 int	tcds_scsi_iserr(struct tcds_slotconfig *);
84 int	tcds_scsi_isintr(struct tcds_slotconfig *, int);
85 void	tcds_scsi_reset(struct tcds_slotconfig *);
86