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      1 /*	$NetBSD: ninjaata32var.h,v 1.6 2017/10/07 16:05:32 jdolecek Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2006 ITOH Yasufumi.
      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 AUTHORS AND CONTRIBUTORS ``AS IS''
     17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     18  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     26  * THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _NJATA32VAR_H_
     30 #define _NJATA32VAR_H_
     31 
     32 #define NJATA32NAME(sc)		(device_xname(sc->sc_wdcdev.sc_atac.atac_dev))
     33 
     34 /* ??? */
     35 #define NJATA32_MAX_XFER	(64 * 1024)
     36 
     37 /*
     38  * DMA page
     39  */
     40 /* # device */
     41 #define NJATA32_NUM_DEV	2
     42 /* # scatter/gather table entries */
     43 #define NJATA32_NUM_SG	NJATA32_SGT_MAXENTRY
     44 
     45 struct njata32_dma_page {
     46 	/*
     47 	 * scatter/gather transfer table
     48 	 */
     49 	struct njata32_sgtable	dp_sg[NJATA32_NUM_DEV][NJATA32_NUM_SG];
     50 };
     51 
     52 #define NJATA32_NCHAN	1	/* only one channel */
     53 
     54 struct njata32_softc {
     55 	struct wdc_softc	sc_wdcdev;	/* common wdc definitions */
     56 
     57 	unsigned		sc_flags;
     58 #define NJATA32_IO_MAPPED		0x00000001
     59 #define NJATA32_MEM_MAPPED		0x00000002
     60 #define NJATA32_CMDPG_MAPPED		0x00000004
     61 
     62 	unsigned		sc_devflags;
     63 
     64 	/* interrupt handle */
     65 	void			*sc_ih;
     66 
     67 	struct ninjaata32_channel {		/* per-channel data */
     68 		struct ata_channel ch_ata_channel; /* generic part */
     69 	} sc_ch[NJATA32_NCHAN];
     70 
     71 	struct ata_channel	*sc_wdc_chanarray[NJATA32_NCHAN];
     72 	struct wdc_regs		sc_wdc_regs;
     73 #define NJATA32_REGT(sc)	(sc)->sc_wdc_regs.cmd_iot
     74 #define NJATA32_REGH(sc)	(sc)->sc_wdc_regs.cmd_baseioh
     75 
     76 	/* for DMA */
     77 	bus_dma_tag_t		sc_dmat;
     78 	struct njata32_dma_page	*sc_sgtpg;	/* scatter/gather table page */
     79 #if 0
     80 	bus_addr_t		sc_sgt_dma;
     81 #endif
     82 	bus_dma_segment_t	sc_sgt_seg;
     83 	bus_dmamap_t		sc_dmamap_sgt;
     84 	int			sc_sgt_nsegs;
     85 
     86 	int			sc_piobm_nsegs;
     87 
     88 	uint8_t			sc_timing_pio;
     89 #if 0	/* ATA DMA is currently unused */
     90 	uint8_t			sc_timing_dma;
     91 #endif
     92 
     93 	uint8_t			sc_atawait;
     94 
     95 	/* per-device structure */
     96 	struct njata32_device {
     97 		/* DMA resource */
     98 		struct njata32_sgtable	*d_sgt;		/* for host */
     99 		bus_addr_t		d_sgt_dma;	/* for device */
    100 		bus_dmamap_t		d_dmamap_xfer;
    101 		unsigned		d_flags;
    102 #define NJATA32_DEV_DMA_MAPPED		0x0001
    103 #define NJATA32_DEV_DMA_READ		0x0002
    104 #define NJATA32_DEV_DMA_ATAPI		0x0004
    105 #define NJATA32_DEV_XFER_INTR		0x0100	/* only for sc_devflags */
    106 #define NJATA32_DEV_GOT_XFER_INTR	0x0200	/* only for sc_devflags */
    107 #define NJATA32_DEV_DMA_STARTED		0x8000	/* for diag */
    108 	} sc_dev[NJATA32_NUM_DEV];
    109 };
    110 
    111 #ifdef _KERNEL
    112 void	njata32_attach(struct njata32_softc *);
    113 int	njata32_detach(struct njata32_softc *, int);
    114 int	njata32_intr(void *);
    115 #endif
    116 
    117 #endif	/* _NJATA32VAR_H_ */
    118