sys/arch/sandpoint/stand/netboot/pciide.c

   1 /* $NetBSD: pciide.c,v 1.6 2008/05/12 09:29:56 nisimura Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2008 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Tohru Nishimura.
   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  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/param.h>
  33 #include <sys/disklabel.h>
  34
  35 #include <dev/ic/wdcreg.h>
  36 #include <dev/ata/atareg.h>
  37
  38 #include <lib/libsa/stand.h>
  39 #include "globals.h"
  40
  41 /*
  42  * - no vtophys() translation, vaddr_t == paddr_t.
  43  */
  44 #define DEVTOV(pa)              (uint32_t)(pa)
  45
  46 /*
  47  * cmdide
  48  * iteide
  49  * viaide
  50  * slide
  51  */
  52
  53 int pciide_match(unsigned, void *);
  54 void *pciide_init(unsigned, void *);
  55
  56 #define PCIIDE_INTERFACE_PCI(chan)      (0x01 << (2 * (chan)))
  57
  58 /* native: PCI BAR0-3 */
  59 static const struct {
  60         int cmd, ctl;
  61 } pcibar[2] = {
  62         { 0x10, 0x14 },
  63         { 0x18, 0x1c },
  64 };
  65 /* legacy: ISA/PCI IO space */
  66 static const struct {
  67         int cmd, ctl;
  68 } compat[2] = {
  69         { 0x1f0, 0x3f6 },
  70         { 0x170, 0x376 },
  71 };
  72
  73 int
  74 pciide_match(unsigned tag, void *data)
  75 {
  76         unsigned v;
  77
  78         v = pcicfgread(tag, PCI_ID_REG);
  79         switch (v) {
  80         case PCI_DEVICE(0x1095, 0x0680): /* SiI 0680 IDE */
  81         case PCI_DEVICE(0x1283, 0x8211): /* ITE 8211 IDE */
  82         case PCI_DEVICE(0x1106, 0x1571): /* VIA 82C586 IDE */
  83         case PCI_DEVICE(0x10ad, 0x0105): /* Symphony Labs 82C105 IDE */
  84                 return 1;
  85         }
  86         return 0;
  87 }
  88
  89 void *
  90 pciide_init(unsigned tag, void *data)
  91 {
  92         int ch, i;
  93         unsigned val;
  94         struct atac_softc *l;
  95         struct atac_channel *cp;
  96
  97         l = alloc(sizeof(struct atac_softc));
  98         memset(l, 0, sizeof(struct atac_softc));
  99         val = pcicfgread(tag, PCI_CLASS_REG);
 100         for (ch = 0; ch < 2; ch += 1) {
 101                 cp = &l->channel[ch];
 102                 if (PCIIDE_INTERFACE_PCI(ch) & val) {
 103                         cp->c_cmdbase =
 104                           (void *)DEVTOV(~03 & pcicfgread(tag, pcibar[ch].cmd));
 105                         cp->c_ctlbase =
 106                           (void *)DEVTOV(~03 & pcicfgread(tag, pcibar[ch].ctl));
 107                         cp->c_data = (u_int16_t *)(cp->c_cmdbase + wd_data);
 108                         for (i = 0; i < 8; i++)
 109                                 cp->c_cmdreg[i] = cp->c_cmdbase + i;
 110                         cp->c_cmdreg[wd_status] = cp->c_cmdreg[wd_command];
 111                         cp->c_cmdreg[wd_features] = cp->c_cmdreg[wd_precomp];
 112                 }
 113                 else {
 114                         uint32_t pciiobase = 0xfe000000; /* !!! */
 115                         cp->c_cmdbase =
 116                             (void *)DEVTOV(pciiobase + compat[ch].cmd);
 117                         cp->c_ctlbase =
 118                             (void *)DEVTOV(pciiobase + compat[ch].ctl);
 119                         cp->c_data = (u_int16_t *)(cp->c_cmdbase + wd_data);
 120                         for (i = 0; i < 8; i++)
 121                                 cp->c_cmdreg[i] = cp->c_cmdbase + i;
 122                         cp->c_cmdreg[wd_status] = cp->c_cmdreg[wd_command];
 123                         cp->c_cmdreg[wd_features] = cp->c_cmdreg[wd_precomp];
 124                 }
 125                 cp->compatchan = ch;
 126         }
 127         l->chvalid = 03 & (unsigned)data;
 128         l->tag = tag;
 129         return l;
 130 }