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edvar.h revision 1.3 
      1 /*	$NetBSD: edvar.h,v 1.3 2001/04/22 11:32:49 jdolecek Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5  *
      6  * This code is derived from software contributed to The NetBSD Foundation
      7  * by Jaromir Dolecek.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *        This product includes software developed by the NetBSD
     20  *        Foundation, Inc. and its contributors.
     21  * 4. The name of the author may not be used to endorse or promote products
     22  *    derived from this software without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     25  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     26  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     27  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     28  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     29  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     30  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     31  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     32  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     33  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     34  */
     35 
     36 struct edc_mca_softc;
     37 #define DASD_MAX_CMD_RES_LEN	8
     38 
     39 struct ed_softc {
     40 	struct device sc_dev;
     41 
     42 	/* General disk infos */
     43 	struct disk sc_dk;
     44 	struct buf_queue sc_q;
     45 	struct simplelock sc_q_lock;
     46 	struct callout sc_edstart;
     47 
     48 	struct buf *sc_bp; /* buf being transfered */
     49 	struct edc_mca_softc *edc_softc;   /* pointer to our parent */
     50 
     51 	volatile int sc_flags;
     52 #define WDF_WLABEL	0x001 /* label is writable */
     53 #define WDF_LABELLING   0x002 /* writing label */
     54 #define WDF_LOADED	0x004 /* parameters loaded */
     55 #define WDF_KLABEL	0x008 /* retain label after 'full' close */
     56 #define EDF_BOUNCEBUF		0x010	/* use bounce buffer */
     57 #define EDF_DMAMAP_LOADED	0x020	/* dmamap_xfer loaded */
     58 #define EDF_PROCESS_QUEUE	0x040
     59 #define EDF_DK_BUSY		0x080	/* disk_busy() called */
     60 #define EDF_IODONE		0x100
     61 	int sc_capacity;
     62 	struct lock sc_lock;	/* drive lock */
     63 
     64 	/* actual drive parameters */
     65 	int sc_devno;		/* DASD device number */
     66 	u_int16_t cyl;
     67 	u_int8_t heads;
     68 	u_int8_t sectors;
     69 	u_int8_t spares;	/* spares per cylinder */
     70 	u_int32_t rba;
     71 	u_int8_t drv_flags;
     72 
     73 	u_int16_t sc_status_block[DASD_MAX_CMD_RES_LEN]; /* CMD status block */
     74 
     75 	daddr_t sc_badsect[127];	/* 126 plus trailing -1 marker */
     76 
     77 	/* Info needed for DMA */
     78 	bus_dma_tag_t sc_dmat;		/* DMA tag as passed by parent */
     79 	bus_dmamap_t dmamap_xfer;	/* transfer dma map */
     80 #define ED_NSEGS	1
     81 	bus_dma_segment_t sc_dmaseg[ED_NSEGS];	/* DMA segment array */
     82 	bus_dma_segment_t sc_dmam[1];	/* Allocated DMA-safe memory */
     83 	vsize_t		sc_dmam_sz;	/* Size of allocated DMA memory */
     84 	caddr_t		sc_dmamkva;	/* Mapped kva of the memory */
     85 
     86 	void *sc_sdhook;		/* our shutdown hook */
     87 
     88 #if NRND > 0
     89 	rndsource_element_t	rnd_source;
     90 #endif
     91 
     92 	struct proc *sc_worker;		/* Worker thread */
     93 	volatile int sc_error;
     94 };
     95