sys/arch/hp700/dev/lasi.c

   1 /*      $NetBSD: lasi.c,v 1.14 2009/05/24 06:53:34 skrll Exp $  */
   2
   3 /*      $OpenBSD: lasi.c,v 1.4 2001/06/09 03:57:19 mickey Exp $ */
   4
   5 /*
   6  * Copyright (c) 1998-2003 Michael Shalayeff
   7  * All rights reserved.
   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  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21  * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
  22  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  24  * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  27  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  28  * THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include <sys/cdefs.h>
  32 __KERNEL_RCSID(0, "$NetBSD: lasi.c,v 1.14 2009/05/24 06:53:34 skrll Exp $");
  33
  34 #undef LASIDEBUG
  35
  36 #include <sys/param.h>
  37 #include <sys/systm.h>
  38 #include <sys/device.h>
  39 #include <sys/reboot.h>
  40
  41 #include <machine/bus.h>
  42 #include <machine/iomod.h>
  43 #include <machine/autoconf.h>
  44
  45 #include <hp700/dev/cpudevs.h>
  46
  47 #include <hp700/gsc/gscbusvar.h>
  48
  49 struct lasi_hwr {
  50         uint32_t lasi_power;
  51 #define LASI_BLINK      0x01
  52 #define LASI_OFF        0x02
  53         uint32_t lasi_error;
  54         uint32_t lasi_version;
  55         uint32_t lasi_reset;
  56         uint32_t lasi_arbmask;
  57 };
  58
  59 struct lasi_trs {
  60         uint32_t lasi_irr;      /* int requset register */
  61         uint32_t lasi_imr;      /* int mask register */
  62         uint32_t lasi_ipr;      /* int pending register */
  63         uint32_t lasi_icr;      /* int command? register */
  64         uint32_t lasi_iar;      /* int acquire? register */
  65 };
  66
  67 #define LASI_BANK_SZ    0x200000
  68 #define LASI_REG_INT    0x100000
  69 #define LASI_REG_MISC   0x10c000
  70
  71 struct lasi_softc {
  72         device_t sc_dev;
  73
  74         struct hp700_int_reg sc_int_reg;
  75
  76         struct lasi_hwr volatile *sc_hw;
  77         struct lasi_trs volatile *sc_trs;
  78 };
  79
  80 int     lasimatch(device_t, cfdata_t, void *);
  81 void    lasiattach(device_t, device_t, void *);
  82
  83 CFATTACH_DECL_NEW(lasi, sizeof(struct lasi_softc),
  84     lasimatch, lasiattach, NULL, NULL);
  85
  86 extern struct cfdriver lasi_cd;
  87
  88 void    lasi_cold_hook(int);
  89
  90 /*
  91  * Before a module is matched, this fixes up its gsc_attach_args.
  92  */
  93 static void lasi_fix_args(void *, struct gsc_attach_args *);
  94 static void
  95 lasi_fix_args(void *_sc, struct gsc_attach_args *ga)
  96 {
  97         struct lasi_softc *sc = _sc;
  98         hppa_hpa_t module_offset;
  99         struct pdc_lan_station_id pdc_mac PDC_ALIGNMENT;
 100
 101         /*
 102          * Determine this module's interrupt bit.
 103          */
 104         module_offset = ga->ga_hpa - (hppa_hpa_t) sc->sc_trs;
 105         ga->ga_irq = HP700CF_IRQ_UNDEF;
 106 #define LASI_IRQ(off, irq) if (module_offset == off) ga->ga_irq = irq
 107         LASI_IRQ(0x2000, 7);    /* lpt */
 108         LASI_IRQ(0x4000, 13);   /* harmony */
 109         LASI_IRQ(0x4040, 16);   /* harmony telephone0 */
 110         LASI_IRQ(0x4060, 17);   /* harmony telephone1 */
 111         LASI_IRQ(0x5000, 5);    /* com */
 112         LASI_IRQ(0x6000, 9);    /* osiop */
 113         LASI_IRQ(0x7000, 8);    /* ie */
 114         LASI_IRQ(0x8000, 26);   /* pckbc */
 115         LASI_IRQ(0xa000, 20);   /* fdc */
 116 #undef LASI_IRQ
 117
 118         /*
 119          * If this is the Ethernet adapter, get its Ethernet address.
 120          */
 121         if (module_offset == 0x7000) {
 122                 if (pdc_call((iodcio_t)pdc, 0, PDC_LAN_STATION_ID,
 123                      PDC_LAN_STATION_ID_READ, &pdc_mac, ga->ga_hpa) == 0)
 124                         memcpy(ga->ga_ether_address, pdc_mac.addr,
 125                                 sizeof(ga->ga_ether_address));
 126         }
 127 }
 128
 129 int
 130 lasimatch(device_t parent, cfdata_t cf, void *aux)
 131 {
 132         struct confargs *ca = aux;
 133
 134         if (ca->ca_type.iodc_type != HPPA_TYPE_BHA ||
 135             ca->ca_type.iodc_sv_model != HPPA_BHA_LASI)
 136                 return 0;
 137
 138         /* Make sure we have an IRQ. */
 139         if (ca->ca_irq == HP700CF_IRQ_UNDEF)
 140                 ca->ca_irq = hp700_intr_allocate_bit(&int_reg_cpu);
 141
 142         /*
 143          * Forcibly mask the HPA down to the start of the LASI
 144          * chip address space.
 145          */
 146         ca->ca_hpa &= ~(LASI_BANK_SZ - 1);
 147
 148         return 1;
 149 }
 150
 151 void
 152 lasiattach(device_t parent, device_t self, void *aux)
 153 {
 154         struct confargs *ca = aux;
 155         struct lasi_softc *sc = device_private(self);
 156         struct gsc_attach_args ga;
 157         bus_space_handle_t ioh;
 158         int s, in;
 159
 160         sc->sc_dev = self;
 161         /*
 162          * Map the LASI interrupt registers.
 163          */
 164         if (bus_space_map(ca->ca_iot, ca->ca_hpa + LASI_REG_INT,
 165                           sizeof(struct lasi_trs), 0, &ioh))
 166                 panic("lasiattach: can't map interrupt registers");
 167         sc->sc_trs = (struct lasi_trs *)ioh;
 168
 169         /*
 170          * Map the LASI miscellaneous registers.
 171          */
 172         if (bus_space_map(ca->ca_iot, ca->ca_hpa + LASI_REG_MISC,
 173                           sizeof(struct lasi_hwr), 0, &ioh))
 174                 panic("lasiattach: can't map misc registers");
 175         sc->sc_hw = (struct lasi_hwr *)ioh;
 176
 177         /* XXX should we reset the chip here? */
 178
 179         aprint_normal(": rev %d.%d\n", (sc->sc_hw->lasi_version & 0xf0) >> 4,
 180                 sc->sc_hw->lasi_version & 0xf);
 181
 182         /* interrupts guts */
 183         s = splhigh();
 184         sc->sc_trs->lasi_iar = cpu_gethpa(0) | (31 - ca->ca_irq);
 185         sc->sc_trs->lasi_icr = 0;
 186         sc->sc_trs->lasi_imr = ~0U;
 187         in = sc->sc_trs->lasi_irr;
 188         sc->sc_trs->lasi_imr = 0;
 189         splx(s);
 190
 191         /* Establish the interrupt register. */
 192         hp700_intr_reg_establish(&sc->sc_int_reg);
 193         sc->sc_int_reg.int_reg_mask = &sc->sc_trs->lasi_imr;
 194         sc->sc_int_reg.int_reg_req = &sc->sc_trs->lasi_irr;
 195
 196         /* Attach the GSC bus. */
 197         ga.ga_ca = *ca; /* clone from us */
 198         if (strcmp(parent->dv_xname, "mainbus0") == 0) {
 199                 ga.ga_dp.dp_bc[0] = ga.ga_dp.dp_bc[1];
 200                 ga.ga_dp.dp_bc[1] = ga.ga_dp.dp_bc[2];
 201                 ga.ga_dp.dp_bc[2] = ga.ga_dp.dp_bc[3];
 202                 ga.ga_dp.dp_bc[3] = ga.ga_dp.dp_bc[4];
 203                 ga.ga_dp.dp_bc[4] = ga.ga_dp.dp_bc[5];
 204                 ga.ga_dp.dp_bc[5] = ga.ga_dp.dp_mod;
 205                 ga.ga_dp.dp_mod = 0;
 206         }
 207
 208         ga.ga_name = "gsc";
 209         ga.ga_int_reg = &sc->sc_int_reg;
 210         ga.ga_fix_args = lasi_fix_args;
 211         ga.ga_fix_args_cookie = sc;
 212         ga.ga_scsi_target = 7; /* XXX */
 213         config_found(self, &ga, gscprint);
 214
 215         /* could be already set by power(4) */
 216         if (!cold_hook)
 217                 cold_hook = lasi_cold_hook;
 218 }
 219
 220 void
 221 lasi_cold_hook(int on)
 222 {
 223         struct lasi_softc *sc = device_private(lasi_cd.cd_devs[0]);
 224
 225         if (!sc)
 226                 return;
 227
 228         switch (on) {
 229         case HPPA_COLD_COLD:
 230                 sc->sc_hw->lasi_power = LASI_BLINK;
 231                 break;
 232         case HPPA_COLD_HOT:
 233                 sc->sc_hw->lasi_power = 0;
 234                 break;
 235         case HPPA_COLD_OFF:
 236                 sc->sc_hw->lasi_power = LASI_OFF;
 237                 break;
 238         }
 239 }