sys/arch/cobalt/stand/boot/wdvar.h

   1 /*      $NetBSD: wdvar.h,v 1.6.38.1 2007/10/03 19:23:05 garbled Exp $   */
   2
   3 /*-
   4  * Copyright (c) 2003 The NetBSD Foundation, Inc.
   5  * Copyright (c) 2001 Dynarc AB, Sweden. All rights reserved.
   6  *
   7  * This code is derived from software written by Anders Magnusson,
   8  * ragge@ludd.luth.se
   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. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #ifndef _STAND_WDVAR_H
  34 #define _STAND_WDVAR_H
  35
  36 #include <dev/ic/wdcreg.h>
  37 #include <dev/ata/atareg.h>
  38 #include <dev/pci/pciidereg.h>
  39
  40 #include <mips/cpuregs.h>
  41
  42 #include <sys/disklabel.h>
  43 #include <sys/bootblock.h>
  44
  45 #define WDC_TIMEOUT             2000000
  46 #define PCIIDE_CHANNEL_NDEV     2
  47 #define NUNITS                  (PCIIDE_CHANNEL_NDEV * PCIIDE_NUM_CHANNELS)
  48 #define WDC_NPORTS              8       /* XXX */
  49 #define WDC_NSHADOWREG          2       /* XXX */
  50
  51 struct wdc_channel {
  52         volatile uint8_t *c_cmdbase;
  53         volatile uint8_t *c_ctlbase;
  54         volatile uint8_t *c_cmdreg[WDC_NPORTS + WDC_NSHADOWREG];
  55         volatile uint16_t *c_data;
  56
  57         uint8_t compatchan;
  58 };
  59
  60 #define WDC_READ_REG(chp, reg)          *(chp)->c_cmdreg[(reg)]
  61 #define WDC_WRITE_REG(chp, reg, val)    *(chp)->c_cmdreg[(reg)] = (val)
  62 #define WDC_READ_CTLREG(chp, reg)       (chp)->c_ctlbase[(reg)]
  63 #define WDC_WRITE_CTLREG(chp, reg, val) (chp)->c_ctlbase[(reg)] = (val)
  64 #define WDC_READ_DATA(chp)              *(chp)->c_data
  65
  66 struct wd_softc {
  67 #define WDF_LBA         0x0001
  68 #define WDF_LBA48       0x0002
  69         uint16_t sc_flags;
  70
  71         u_int sc_part;
  72         u_int sc_unit;
  73
  74         uint64_t sc_capacity;
  75
  76         struct ataparams sc_params;
  77         struct disklabel sc_label;
  78         struct wdc_channel sc_channel;
  79 };
  80
  81 struct wdc_command {
  82         uint8_t drive;          /* drive id */
  83
  84         uint8_t r_command;      /* Parameters to upload to registers */
  85         uint8_t r_head;
  86         uint16_t r_cyl;
  87         uint8_t r_sector;
  88         uint8_t r_count;
  89         uint8_t r_precomp;
  90
  91         uint16_t bcount;
  92         void *data;
  93
  94         uint64_t r_blkno;
  95 };
  96
  97 int     wdc_init(struct wd_softc *, u_int *);
  98 int     wdccommand(struct wd_softc *, struct wdc_command *);
  99 int     wdccommandext(struct wd_softc *, struct wdc_command *);
 100 int     wdc_exec_read(struct wd_softc *, uint8_t, daddr_t, void *);
 101 int     wdc_exec_identify(struct wd_softc *, void *);
 102
 103 int     pciide_init(struct wdc_channel *, u_int *);
 104
 105 #endif /* _STAND_WDVAR_H */