sys/arch/alpha/pci/pci_alphabook1.c

   1 /* $NetBSD: pci_alphabook1.c,v 1.12 2009/03/14 21:04:02 dsl 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 Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
   9  * NASA Ames Research Center.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 /*
  34  * Copyright (c) 1995, 1996 Carnegie-Mellon University.
  35  * All rights reserved.
  36  *
  37  * Authors: Jeffrey Hsu and Chris G. Demetriou
  38  *
  39  * Permission to use, copy, modify and distribute this software and
  40  * its documentation is hereby granted, provided that both the copyright
  41  * notice and this permission notice appear in all copies of the
  42  * software, derivative works or modified versions, and any portions
  43  * thereof, and that both notices appear in supporting documentation.
  44  *
  45  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  46  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
  47  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  48  *
  49  * Carnegie Mellon requests users of this software to return to
  50  *
  51  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  52  *  School of Computer Science
  53  *  Carnegie Mellon University
  54  *  Pittsburgh PA 15213-3890
  55  *
  56  * any improvements or extensions that they make and grant Carnegie the
  57  * rights to redistribute these changes.
  58  */
  59
  60 #include <sys/cdefs.h>                  /* RCS ID & Copyright macro defns */
  61
  62 __KERNEL_RCSID(0, "$NetBSD: pci_alphabook1.c,v 1.12 2009/03/14 21:04:02 dsl Exp $");
  63
  64 #include <sys/types.h>
  65 #include <sys/param.h>
  66 #include <sys/time.h>
  67 #include <sys/systm.h>
  68 #include <sys/errno.h>
  69 #include <sys/device.h>
  70
  71 #include <uvm/uvm_extern.h>
  72
  73 #include <machine/autoconf.h>
  74 #include <machine/bus.h>
  75 #include <machine/intr.h>
  76
  77 #include <dev/isa/isavar.h>
  78 #include <dev/pci/pcireg.h>
  79 #include <dev/pci/pcivar.h>
  80
  81 #include <alpha/pci/lcavar.h>
  82
  83 #include <alpha/pci/pci_alphabook1.h>
  84 #include <alpha/pci/siovar.h>
  85 #include <alpha/pci/sioreg.h>
  86
  87 #include "sio.h"
  88
  89 int     dec_alphabook1_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
  90 const char *dec_alphabook1_intr_string(void *, pci_intr_handle_t);
  91 const struct evcnt *dec_alphabook1_intr_evcnt(void *, pci_intr_handle_t);
  92 void    *dec_alphabook1_intr_establish(void *, pci_intr_handle_t,
  93             int, int (*func)(void *), void *);
  94 void    dec_alphabook1_intr_disestablish(void *, void *);
  95
  96 #define LCA_SIO_DEVICE  7       /* XXX */
  97
  98 void
  99 pci_alphabook1_pickintr(struct lca_config *lcp)
 100 {
 101         bus_space_tag_t iot = &lcp->lc_iot;
 102         pci_chipset_tag_t pc = &lcp->lc_pc;
 103         pcireg_t sioclass;
 104         int sioII;
 105
 106         /* XXX MAGIC NUMBER */
 107         sioclass = pci_conf_read(pc, pci_make_tag(pc, 0, LCA_SIO_DEVICE, 0),
 108             PCI_CLASS_REG);
 109         sioII = (sioclass & 0xff) >= 3;
 110
 111         if (!sioII)
 112                 printf("WARNING: SIO NOT SIO II... NO BETS...\n");
 113
 114         pc->pc_intr_v = lcp;
 115         pc->pc_intr_map = dec_alphabook1_intr_map;
 116         pc->pc_intr_string = dec_alphabook1_intr_string;
 117         pc->pc_intr_evcnt = dec_alphabook1_intr_evcnt;
 118         pc->pc_intr_establish = dec_alphabook1_intr_establish;
 119         pc->pc_intr_disestablish = dec_alphabook1_intr_disestablish;
 120
 121         /* Not supported on AlphaBook. */
 122         pc->pc_pciide_compat_intr_establish = NULL;
 123
 124 #if NSIO
 125         sio_intr_setup(pc, iot);
 126 #else
 127         panic("pci_alphabook1_pickintr: no I/O interrupt handler (no sio)");
 128 #endif
 129 }
 130
 131 int
 132 dec_alphabook1_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp)
 133 {
 134         pcitag_t bustag = pa->pa_intrtag;
 135         int buspin = pa->pa_intrpin;
 136         pci_chipset_tag_t pc = pa->pa_pc;
 137         int device, irq;
 138
 139         if (buspin == 0) {
 140                 /* No IRQ used. */
 141                 return 1;
 142         }
 143         if (buspin > 4) {
 144                 printf("dec_alphabook1_intr_map: bad interrupt pin %d\n",
 145                     buspin);
 146                 return 1;
 147         }
 148
 149         pci_decompose_tag(pc, bustag, NULL, &device, NULL);
 150
 151         /*
 152          * There is only one interrupting PCI device on the AlphaBook: an
 153          * NCR SCSI at device 6.  Devices 7 and 8 are the SIO and a
 154          * Cirrus PD6729 PCMCIA controller.  There are no option slots
 155          * available.
 156          *
 157          * NOTE!  Apparently, there was a later AlphaBook which uses
 158          * a different interrupt scheme, and has a built-in Tulip Ethernet
 159          * interface!  We do not handle that here!
 160          */
 161
 162         switch (device) {
 163         case 6:                                 /* NCR SCSI */
 164                 irq = 14;
 165                 break;
 166
 167         default:
 168                 printf("dec_alphabook1_intr_map: weird device number %d\n",
 169                     device);
 170                 return 1;
 171         }
 172
 173         *ihp = irq;
 174         return (0);
 175 }
 176
 177 const char *
 178 dec_alphabook1_intr_string(void *lcv, pci_intr_handle_t ih)
 179 {
 180 #if 0
 181         struct lca_config *lcp = lcv;
 182 #endif
 183
 184         return sio_intr_string(NULL /*XXX*/, ih);
 185 }
 186
 187 const struct evcnt *
 188 dec_alphabook1_intr_evcnt(void *lcv, pci_intr_handle_t ih)
 189 {
 190 #if 0
 191         struct lca_config *lcp = lcv;
 192 #endif
 193
 194         return sio_intr_evcnt(NULL /*XXX*/, ih);
 195 }
 196
 197 void *
 198 dec_alphabook1_intr_establish(void *lcv, pci_intr_handle_t ih, int level, int (*func)(void *), void *arg)
 199 {
 200 #if 0
 201         struct lca_config *lcp = lcv;
 202 #endif
 203
 204         return sio_intr_establish(NULL /*XXX*/, ih, IST_LEVEL, level, func,
 205             arg);
 206 }
 207
 208 void
 209 dec_alphabook1_intr_disestablish(void *lcv, void *cookie)
 210 {
 211 #if 0
 212         struct lca_config *lcp = lcv;
 213 #endif
 214
 215         sio_intr_disestablish(NULL /*XXX*/, cookie);
 216 }