sys/arch/arm/sa11x0/sa11x0.c

   1 /*      $NetBSD: sa11x0.c,v 1.24 2009/05/29 14:15:44 rjs Exp $  */
   2
   3 /*-
   4  * Copyright (c) 2001, The NetBSD Foundation, Inc.  All rights reserved.
   5  *
   6  * This code is derived from software contributed to The NetBSD Foundation
   7  * by IWAMOTO Toshihiro and Ichiro FUKUHARA.
   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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  20  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  */
  30 /*-
  31  * Copyright (c) 1999
  32  *         Shin Takemura and PocketBSD Project. All rights reserved.
  33  *
  34  * Redistribution and use in source and binary forms, with or without
  35  * modification, are permitted provided that the following conditions
  36  * are met:
  37  * 1. Redistributions of source code must retain the above copyright
  38  *    notice, this list of conditions and the following disclaimer.
  39  * 2. Redistributions in binary form must reproduce the above copyright
  40  *    notice, this list of conditions and the following disclaimer in the
  41  *    documentation and/or other materials provided with the distribution.
  42  * 3. All advertising materials mentioning features or use of this software
  43  *    must display the following acknowledgement:
  44  *      This product includes software developed by the PocketBSD project
  45  *      and its contributors.
  46  * 4. Neither the name of the project nor the names of its contributors
  47  *    may be used to endorse or promote products derived from this software
  48  *    without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  51  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  52  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  53  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  54  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  55  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  56  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  57  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  58  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  59  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  60  * SUCH DAMAGE.
  61  *
  62  */
  63
  64 #include <sys/cdefs.h>
  65 __KERNEL_RCSID(0, "$NetBSD: sa11x0.c,v 1.24 2009/05/29 14:15:44 rjs Exp $");
  66
  67 #include <sys/param.h>
  68 #include <sys/systm.h>
  69 #include <sys/device.h>
  70 #include <sys/kernel.h>
  71 #include <sys/reboot.h>
  72
  73 #include <uvm/uvm_extern.h>
  74
  75 #include <machine/cpu.h>
  76 #include <machine/bus.h>
  77
  78 #include <arm/arm32/psl.h>
  79 #include <arm/arm32/machdep.h>
  80 #include <arm/mainbus/mainbus.h>
  81 #include <arm/sa11x0/sa11x0_reg.h>
  82 #include <arm/sa11x0/sa11x0_var.h>
  83 #include <arm/sa11x0/sa11x0_dmacreg.h>
  84 #include <arm/sa11x0/sa11x0_ppcreg.h>
  85 #include <arm/sa11x0/sa11x0_gpioreg.h>
  86
  87 #include "locators.h"
  88
  89 /* prototypes */
  90 static int      sa11x0_match(device_t, cfdata_t, void *);
  91 static void     sa11x0_attach(device_t, device_t, void *);
  92 static int      sa11x0_search(device_t, cfdata_t, const int *, void *);
  93 static int      sa11x0_print(void *, const char *);
  94
  95 /* attach structures */
  96 CFATTACH_DECL_NEW(saip, sizeof(struct sa11x0_softc),
  97     sa11x0_match, sa11x0_attach, NULL, NULL);
  98
  99 extern struct bus_space sa11x0_bs_tag;
 100 extern vaddr_t saipic_base;
 101
 102 /*
 103  * int sa11x0_print(void *aux, const char *name)
 104  * print configuration info for children
 105  */
 106
 107 static int
 108 sa11x0_print(void *aux, const char *name)
 109 {
 110         struct sa11x0_attach_args *sa = (struct sa11x0_attach_args*)aux;
 111
 112         if (sa->sa_size)
 113                 aprint_normal(" addr 0x%lx", sa->sa_addr);
 114         if (sa->sa_size > 1)
 115                 aprint_normal("-0x%lx", sa->sa_addr + sa->sa_size - 1);
 116         if (sa->sa_intr > 1)
 117                 aprint_normal(" intr %d", sa->sa_intr);
 118         if (sa->sa_gpio != -1)
 119                 aprint_normal(" gpio %d", sa->sa_gpio);
 120
 121         return UNCONF;
 122 }
 123
 124 int
 125 sa11x0_match(device_t parent, cfdata_t match, void *aux)
 126 {
 127
 128         return 1;
 129 }
 130
 131 void
 132 sa11x0_attach(device_t parent, device_t self, void *aux)
 133 {
 134         struct sa11x0_softc *sc = device_private(self);
 135
 136         sc->sc_dev = self;
 137         sc->sc_iot = &sa11x0_bs_tag;
 138
 139         /* Map the SAIP */
 140         if (bus_space_map(sc->sc_iot, SAIPIC_BASE, SAIPIC_NPORTS,
 141                         0, &sc->sc_ioh))
 142                 panic("%s: Cannot map registers", self->dv_xname);
 143         saipic_base = sc->sc_ioh;
 144
 145         /* Map the GPIO registers */
 146         if (bus_space_map(sc->sc_iot, SAGPIO_BASE, SAGPIO_NPORTS,
 147                           0, &sc->sc_gpioh))
 148                 panic("%s: unable to map GPIO registers", self->dv_xname);
 149         bus_space_write_4(sc->sc_iot, sc->sc_gpioh, SAGPIO_EDR, 0xffffffff);
 150
 151         /* Map the PPC registers */
 152         if (bus_space_map(sc->sc_iot, SAPPC_BASE, SAPPC_NPORTS,
 153                           0, &sc->sc_ppch))
 154                 panic("%s: unable to map PPC registers", self->dv_xname);
 155
 156         /* Map the DMA controller registers */
 157         if (bus_space_map(sc->sc_iot, SADMAC_BASE, SADMAC_NPORTS,
 158                           0, &sc->sc_dmach))
 159                 panic("%s: unable to map DMAC registers", self->dv_xname);
 160
 161         /* Map the reset controller registers */
 162         if (bus_space_map(sc->sc_iot, SARCR_BASE, PAGE_SIZE,
 163                           0, &sc->sc_reseth))
 164                 panic("%s: unable to map reset registers", self->dv_xname);
 165
 166         printf("\n");
 167
 168         /*
 169          *  Mask all interrupts.
 170          *  They are later unmasked at each device's attach routine.
 171          */
 172         bus_space_write_4(sc->sc_iot, sc->sc_ioh, SAIPIC_MR, 0);
 173
 174         /* Route all bits to IRQ */
 175         bus_space_write_4(sc->sc_iot, sc->sc_ioh, SAIPIC_LR, 0);
 176
 177         /* Exit idle mode only when unmasked intr is received */
 178         bus_space_write_4(sc->sc_iot, sc->sc_ioh, SAIPIC_CR, 1);
 179
 180         /* disable all DMAC channels */
 181         bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR0_CLR, 1);
 182         bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR1_CLR, 1);
 183         bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR2_CLR, 1);
 184         bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR3_CLR, 1);
 185         bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR4_CLR, 1);
 186         bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR5_CLR, 1);
 187
 188         /* Make sure to init spl masks, note we set the mask to 0 above */
 189         set_spl_masks();
 190
 191         SetCPSR(I32_bit, 0);
 192
 193         /*
 194          *  Attach each devices
 195          */
 196         config_search_ia(sa11x0_search, self, "saip", NULL);
 197 }
 198
 199 int
 200 sa11x0_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
 201 {
 202         struct sa11x0_softc *sc = device_private(parent);
 203         struct sa11x0_attach_args sa;
 204
 205         sa.sa_sc = sc;
 206         sa.sa_iot = sc->sc_iot;
 207         sa.sa_name = cf->cf_name;
 208         sa.sa_addr = cf->cf_loc[SAIPCF_ADDR];
 209         sa.sa_size = cf->cf_loc[SAIPCF_SIZE];
 210         sa.sa_intr = cf->cf_loc[SAIPCF_INTR];
 211         sa.sa_gpio = cf->cf_loc[SAIPCF_GPIO];
 212
 213         if (config_match(parent, cf, &sa) > 0)
 214                 config_attach(parent, cf, &sa, sa11x0_print);
 215
 216         return 0;
 217 }