sys/arch/evbarm/hdl_g/hdlg_pci.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (c) 2001, 2002 Wasabi Systems, Inc.
   5  * All rights reserved.
   6  *
   7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed for the NetBSD Project by
  20  *      Wasabi Systems, Inc.
  21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
  22  *    or promote products derived from this software without specific prior
  23  *    written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
  29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  35  * POSSIBILITY OF SUCH DAMAGE.
  36  */
  37
  38 #include <sys/cdefs.h>
  39 __KERNEL_RCSID(0, "$NetBSD$");
  40
  41 #include <sys/param.h>
  42 #include <sys/systm.h>
  43 #include <sys/device.h>
  44
  45 #include <machine/autoconf.h>
  46 #include <machine/bus.h>
  47
  48 #include <evbarm/hdl_g/hdlgreg.h>
  49 #include <evbarm/hdl_g/hdlgvar.h>
  50
  51 #include <arm/xscale/i80321reg.h>
  52 #include <arm/xscale/i80321var.h>
  53
  54 #include <dev/pci/pcidevs.h>
  55 #include <dev/pci/ppbreg.h>
  56
  57 int     hdlg_pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
  58 const char *hdlg_pci_intr_string(void *, pci_intr_handle_t);
  59 const struct evcnt *hdlg_pci_intr_evcnt(void *, pci_intr_handle_t);
  60 void    *hdlg_pci_intr_establish(void *, pci_intr_handle_t,
  61             int, int (*func)(void *), void *);
  62 void    hdlg_pci_intr_disestablish(void *, void *);
  63
  64 void
  65 hdlg_pci_init(pci_chipset_tag_t pc, void *cookie)
  66 {
  67
  68         pc->pc_intr_v = cookie;         /* the i80321 softc */
  69         pc->pc_intr_map = hdlg_pci_intr_map;
  70         pc->pc_intr_string = hdlg_pci_intr_string;
  71         pc->pc_intr_evcnt = hdlg_pci_intr_evcnt;
  72         pc->pc_intr_establish = hdlg_pci_intr_establish;
  73         pc->pc_intr_disestablish = hdlg_pci_intr_disestablish;
  74 }
  75
  76 int
  77 hdlg_pci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp)
  78 {
  79         struct i80321_softc *sc = pa->pa_pc->pc_intr_v;
  80         uint32_t busno;
  81         int b, d, f;
  82
  83         /*
  84          * GigaLANDISK's interrupts are routed like so:
  85          *
  86          *      XINT0   Intel i82541PI Gig-E
  87          *
  88          *      XINT1   ACARD ATP875-A
  89          *
  90          *      XINT2   NEC echi/ochi
  91          *
  92          *      XINT3   UART
  93          */
  94
  95         busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR);
  96         busno = PCIXSR_BUSNO(busno);
  97         if (busno == 0xff)
  98                 busno = 0;
  99
 100         pci_decompose_tag(pa->pa_pc, pa->pa_intrtag, &b, &d, &f);
 101
 102         /* No mappings for devices not on our bus. */
 103         if (b != busno)
 104                 goto no_mapping;
 105
 106         switch (d) {
 107         case 1:                 /* i82541PI Gig-E */
 108                 if (pa->pa_intrpin == 1) {
 109                         *ihp = ICU_INT_XINT(0);
 110                         return 0;
 111                 }
 112                 goto no_mapping;
 113
 114         case 2:                 /* ATP875-A */
 115                 if (pa->pa_intrpin == 1) {
 116                         *ihp = ICU_INT_XINT(1);
 117                         return 0;
 118                 }
 119                 goto no_mapping;
 120
 121         case 3:                 /* echi/ochi */
 122                 switch (pa->pa_intrpin) {
 123                 case 1: /* ohci */
 124                 case 2: /* ohci */
 125                 case 3: /* ehci */
 126                         *ihp = ICU_INT_XINT(2);
 127                         return 0;
 128                 }
 129                 goto no_mapping;
 130
 131         default:
 132  no_mapping:
 133                 printf("hdlg_pci_intr_map: no mapping for %d/%d/%d\n",
 134                     pa->pa_bus, pa->pa_device, pa->pa_function);
 135                 return 1;
 136         }
 137
 138         return 0;
 139 }
 140
 141 const char *
 142 hdlg_pci_intr_string(void *v, pci_intr_handle_t ih)
 143 {
 144
 145         return i80321_irqnames[ih];
 146 }
 147
 148 const struct evcnt *
 149 hdlg_pci_intr_evcnt(void *v, pci_intr_handle_t ih)
 150 {
 151
 152         /* XXX For now. */
 153         return NULL;
 154 }
 155
 156 void *
 157 hdlg_pci_intr_establish(void *v, pci_intr_handle_t ih, int ipl,
 158     int (*func)(void *), void *arg)
 159 {
 160
 161         return i80321_intr_establish(ih, ipl, func, arg);
 162 }
 163
 164 void
 165 hdlg_pci_intr_disestablish(void *v, void *cookie)
 166 {
 167
 168         i80321_intr_disestablish(cookie);
 169 }