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wdcvar.h revision 1.4 
      1 /*	$NetBSD: wdcvar.h,v 1.4 1998/09/10 19:24:45 kenh Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Charles M. Hannum, by Onno van der Linden and by Manuel Bouyer.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 struct wdc_attachment_data {
     40 	/* manadatory fields */
     41 	int			cap;
     42 	int			flags;
     43 	bus_space_tag_t		iot;
     44 	bus_space_handle_t	ioh;
     45 	bus_space_tag_t		auxiot;
     46 	bus_space_handle_t	auxioh;
     47 	/*
     48 	 * XXX data access (normal and 32-bit) may need to be
     49 	 * done via a separate iot/ioh on some systems.  Let's
     50 	 * wait and see if that's the case before implementing
     51 	 * it.
     52 	 */
     53 
     54 	/* if WDC_CAPABILITY_DMA set in 'cap' */
     55 	void			*dma_arg;
     56 	void			(*dma_setup) __P((void *));
     57 	void			(*dma_start) __P((void *, void *, size_t,
     58 				    int));
     59 	void			(*dma_finish) __P((void *));
     60 
     61 	/* if WDC_CAPABILITY_HWLOCK set in 'cap' */
     62 	int			(*claim_hw) __P((void *, int));
     63 	void			(*free_hw) __P((void *));
     64 };
     65 
     66 /* Capabilities supported by the controller */
     67 #define	WDC_CAPABILITY_DATA32	0x01		/* 32-bit data access */
     68 #define	WDC_CAPABILITY_DMA	0x02		/* DMA */
     69 #define	WDC_CAPABILITY_HWLOCK	0x04		/* Needs to lock HW */
     70 
     71 /* Flags passed from the attach routine to the wdc driver */
     72 #define WDC_NO_EXTRA_RESETS	0x01		/* Only reset once at attach */
     73 
     74 struct wdc_softc {
     75 	struct device sc_dev;
     76 	const struct wdc_attachment_data *sc_adp;
     77 
     78 	struct wd_link *d_link[2];
     79 	struct scsipi_link *ab_link;
     80 
     81 	TAILQ_HEAD(xferhead, wdc_xfer) sc_xfer;
     82 	int sc_flags;
     83 #define	WDCF_ACTIVE		0x01	/* controller is active */
     84 #define	WDCF_SINGLE		0x02	/* sector at a time mode */
     85 #define	WDCF_ERROR		0x04	/* processing a disk error */
     86 #define	WDCF_WANTED		0x08	/* XXX locking for wd_get_parms() */
     87 #define	WDCF_IRQ_WAIT		0x10	/* controller is waiting for irq */
     88 #define	WDCF_ONESLAVE		0x20	/* ctrl. has one ATAPI slave attached */
     89 	int sc_errors;			/* errors during current transfer */
     90 	u_char sc_status;		/* copy of status register */
     91 	u_char sc_error;		/* copy of error register */
     92 	u_char sc_drives_mask;	/* bitmask for drives present/absent */
     93 };
     94 
     95 #define	sc_cap		sc_adp->cap
     96 #define	sc_iot		sc_adp->iot
     97 #define	sc_ioh		sc_adp->ioh
     98 #define	sc_auxiot	sc_adp->auxiot
     99 #define	sc_auxioh	sc_adp->auxioh
    100 #define	sc_dma_arg	sc_adp->dma_arg
    101 #define	sc_dma_setup	sc_adp->dma_setup
    102 #define	sc_dma_start	sc_adp->dma_start
    103 #define	sc_dma_finish	sc_adp->dma_finish
    104 #define	sc_claim_hw	sc_adp->claim_hw
    105 #define	sc_free_hw	sc_adp->free_hw
    106 
    107 void	wdcattach(struct wdc_softc *, const struct wdc_attachment_data *);
    108 int	wdcintr(void *);
    109 int	wdcprobe(const struct wdc_attachment_data *);
    110