sys/arch/alpha/pci/pci_up1000.c

   1 /* $NetBSD: pci_up1000.c,v 1.9 2007/03/04 21:58:16 mrg Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2000 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.
   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/cdefs.h>                  /* RCS ID & Copyright macro defns */
  33
  34 __KERNEL_RCSID(0, "$NetBSD: pci_up1000.c,v 1.9 2007/03/04 21:58:16 mrg Exp $");
  35
  36 #include <sys/types.h>
  37 #include <sys/param.h>
  38 #include <sys/time.h>
  39 #include <sys/systm.h>
  40 #include <sys/errno.h>
  41 #include <sys/device.h>
  42
  43 #include <uvm/uvm_extern.h>
  44
  45 #include <machine/autoconf.h>
  46 #include <machine/bus.h>
  47 #include <machine/intr.h>
  48
  49 #include <dev/isa/isavar.h>
  50
  51 #include <dev/pci/pcireg.h>
  52 #include <dev/pci/pcivar.h>
  53 #include <dev/pci/pciidereg.h>
  54 #include <dev/pci/pciidevar.h>
  55
  56 #include <alpha/pci/irongatevar.h>
  57
  58 #include <alpha/pci/pci_up1000.h>
  59 #include <alpha/pci/siovar.h>
  60 #include <alpha/pci/sioreg.h>
  61
  62 #include "sio.h"
  63
  64 int     api_up1000_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
  65 const char *api_up1000_intr_string(void *, pci_intr_handle_t);
  66 const struct evcnt *api_up1000_intr_evcnt(void *, pci_intr_handle_t);
  67 void    *api_up1000_intr_establish(void *, pci_intr_handle_t,
  68             int, int (*func)(void *), void *);
  69 void    api_up1000_intr_disestablish(void *, void *);
  70
  71 void    *api_up1000_pciide_compat_intr_establish(void *, struct device *,
  72             struct pci_attach_args *, int, int (*)(void *), void *);
  73
  74 void
  75 pci_up1000_pickintr(struct irongate_config *icp)
  76 {
  77 #if NSIO
  78         bus_space_tag_t iot = &icp->ic_iot;
  79         pci_chipset_tag_t pc = &icp->ic_pc;
  80
  81         pc->pc_intr_v = icp;
  82         pc->pc_intr_map = api_up1000_intr_map;
  83         pc->pc_intr_string = api_up1000_intr_string;
  84         pc->pc_intr_evcnt = api_up1000_intr_evcnt;
  85         pc->pc_intr_establish = api_up1000_intr_establish;
  86         pc->pc_intr_disestablish = api_up1000_intr_disestablish;
  87
  88         pc->pc_pciide_compat_intr_establish =
  89             api_up1000_pciide_compat_intr_establish;
  90
  91         sio_intr_setup(pc, iot);
  92 #else
  93         panic("pci_up1000_pickintr: no I/O interrupt handler (no sio)");
  94 #endif
  95 }
  96
  97 int
  98 api_up1000_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp)
  99 {
 100         pci_chipset_tag_t pc = pa->pa_pc;
 101         int buspin = pa->pa_intrpin;
 102         int bustag = pa->pa_intrtag;
 103         int line = pa->pa_intrline;
 104         int bus, device, function;
 105
 106         if (buspin == 0) {
 107                 /* No IRQ used. */
 108                 return 1;
 109         }
 110         if (buspin > 4) {
 111                 printf("api_up1000_intr_map: bad interrupt pin %d\n",
 112                     buspin);
 113                 return 1;
 114         }
 115
 116         pci_decompose_tag(pc, bustag, &bus, &device, &function);
 117
 118         /*
 119          * The console places the interrupt mapping in the "line" value.
 120          * A value of (char)-1 indicates there is no mapping.
 121          */
 122         if (line == 0xff) {
 123                 printf("api_up1000_intr_map: no mapping for %d/%d/%d\n",
 124                     bus, device, function);
 125                 return (1);
 126         }
 127
 128         /* XXX Check for 0? */
 129         if (line > 15) {
 130                 printf("api_up1000_intr_map: ISA IRQ too large (%d)\n",
 131                     line);
 132                 return (1);
 133         }
 134         if (line == 2) {
 135                 printf("api_up1000_intr_map: changed IRQ 2 to IRQ 9\n");
 136                 line = 9;
 137         }
 138
 139         *ihp = line;
 140         return (0);
 141 }
 142
 143 const char *
 144 api_up1000_intr_string(void *icv, pci_intr_handle_t ih)
 145 {
 146 #if 0
 147         struct irongate_config *icp = icv;
 148 #endif
 149
 150         return sio_intr_string(NULL /*XXX*/, ih);
 151 }
 152
 153 const struct evcnt *
 154 api_up1000_intr_evcnt(void *icv, pci_intr_handle_t ih)
 155 {
 156 #if 0
 157         struct irongate_config *icp = icv;
 158 #endif
 159
 160         return sio_intr_evcnt(NULL /*XXX*/, ih);
 161 }
 162
 163 void *
 164 api_up1000_intr_establish(void *icv, pci_intr_handle_t ih, int level,
 165     int (*func)(void *), void *arg)
 166 {
 167 #if 0
 168         struct irongate_config *icp = icv;
 169 #endif
 170
 171         return sio_intr_establish(NULL /*XXX*/, ih, IST_LEVEL, level, func,
 172             arg);
 173 }
 174
 175 void
 176 api_up1000_intr_disestablish(void *icv, void *cookie)
 177 {
 178 #if 0
 179         struct irongate_config *icp = icv;
 180 #endif
 181
 182         sio_intr_disestablish(NULL /*XXX*/, cookie);
 183 }
 184
 185 void *
 186 api_up1000_pciide_compat_intr_establish(void *icv, struct device *dev,
 187     struct pci_attach_args *pa, int chan, int (*func)(void *), void *arg)
 188 {
 189         pci_chipset_tag_t pc = pa->pa_pc;
 190         void *cookie = NULL;
 191         int bus, irq;
 192
 193         pci_decompose_tag(pc, pa->pa_tag, &bus, NULL, NULL);
 194
 195         /*
 196          * If this isn't PCI bus #0, all bets are off.
 197          */
 198         if (bus != 0)
 199                 return (NULL);
 200
 201         irq = PCIIDE_COMPAT_IRQ(chan);
 202 #if NSIO
 203         cookie = sio_intr_establish(NULL /*XXX*/, irq, IST_EDGE, IPL_BIO,
 204             func, arg);
 205         if (cookie == NULL)
 206                 return (NULL);
 207         printf("%s: %s channel interrupting at %s\n", dev->dv_xname,
 208             PCIIDE_CHANNEL_NAME(chan), sio_intr_string(NULL /*XXX*/, irq));
 209 #endif
 210         return (cookie);
 211 }