FreeBSD/Linux Kernel Cross Reference
sys/arm/sa11x0/sa11x0.c

     /*      $NetBSD: sa11x0.c,v 1.14 2003/07/15 00:24:50 lukem Exp $        */
     
     /*-
      * Copyright (c) 2001, The NetBSD Foundation, Inc.  All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by IWAMOTO Toshihiro and Ichiro FUKUHARA.
      *
      * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     */
    /*-
     * Copyright (c) 1999
     *         Shin Takemura and PocketBSD Project. All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by the PocketBSD project
     *      and its contributors.
     * 4. Neither the name of the project nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD: releng/10.0/sys/arm/sa11x0/sa11x0.c 236990 2012-06-13 04:59:00Z imp $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/bus.h>
    #include <sys/kernel.h>
    #include <sys/reboot.h>
    #include <sys/malloc.h>
    #include <sys/interrupt.h>
    #include <sys/module.h>
    #include <sys/rman.h>
    
    #include <vm/vm.h>
    #include <vm/vm_extern.h>
    
    #include <machine/cpu.h>
    #include <machine/bus.h>
    #include <machine/intr.h>
    #include <arm/sa11x0/sa11x0_reg.h>
    #include <arm/sa11x0/sa11x0_var.h>
    #include <arm/sa11x0/sa11x0_dmacreg.h>
    #include <arm/sa11x0/sa11x0_ppcreg.h>
    #include <arm/sa11x0/sa11x0_gpioreg.h>
    
    extern void sa11x0_activateirqs(void);
    
    static struct resource *sa1110_alloc_resource(device_t, device_t, int, int *,
            u_long, u_long, u_long, u_int);
    
    static int sa1110_activate_resource(device_t, device_t, int, int,
            struct resource *);
    static int sa1110_setup_intr(device_t, device_t, struct resource *, int,
            driver_filter_t *, driver_intr_t *, void *, void **);
    
    struct sa11x0_softc *sa11x0_softc; /* There can be only one. */
    
    static int
    sa1110_setup_intr(device_t dev, device_t child,
            struct resource *ires,  int flags, driver_filter_t *filt,
            driver_intr_t *intr, void *arg, void **cookiep)
    {
            int saved_cpsr;
            
            if (flags & INTR_TYPE_TTY)
                    rman_set_start(ires, 15);
            else if (flags & INTR_TYPE_CLK) {
                    if (rman_get_start(ires) == 0)
                           rman_set_start(ires, 26);
                   else
                           rman_set_start(ires, 27);
           }
           saved_cpsr = SetCPSR(I32_bit, I32_bit);
   
           SetCPSR(I32_bit, saved_cpsr & I32_bit);
           BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags, filt,
               intr, arg, cookiep);
           return (0);
   }
   
   static struct resource *
   sa1110_alloc_resource(device_t bus, device_t child, int type, int *rid,
           u_long start, u_long end, u_long count, u_int flags)
   {
           struct resource *res;
           
           res = rman_reserve_resource(&sa11x0_softc->sa11x0_rman, *rid, *rid,
               count, flags, child);
           if (res != NULL)
                   rman_set_rid(res, *rid);
   
           return (res);
   }
   static int
   sa1110_activate_resource(device_t bus, device_t child, int type, int rid,
           struct resource *r)
   {
           return (0);
   }
   /* prototypes */
   static int      sa11x0_probe(device_t);
   static int      sa11x0_attach(device_t);
   static void     sa11x0_identify(driver_t *, device_t);
   
   extern vm_offset_t saipic_base;
   
   
   int
   sa11x0_probe(device_t dev)
   {
           return 0;
   }
   
   void
   sa11x0_identify(driver_t *driver, device_t parent)
   {
           
           BUS_ADD_CHILD(parent, 0, "saip", 0);
   }
   
   int
   sa11x0_attach(device_t dev)
   {
           struct sa11x0_softc *sc = device_get_softc(dev);
           int unit = device_get_unit(dev);
           sc->sc_iot = &sa11x0_bs_tag;
   
           sa11x0_softc = sc;
   
           /* Map the SAIP */
   
           if (bus_space_map(sc->sc_iot, SAIPIC_BASE, SAIPIC_NPORTS,
                           0, &sc->sc_ioh))
                   panic("saip%d: Cannot map registers", unit);
           saipic_base = sc->sc_ioh;
   
           /* Map the GPIO registers */
           if (bus_space_map(sc->sc_iot, SAGPIO_BASE, SAGPIO_NPORTS,
                             0, &sc->sc_gpioh))
                   panic("saip%d: unable to map GPIO registers", unit);
           bus_space_write_4(sc->sc_iot, sc->sc_gpioh, SAGPIO_EDR, 0xffffffff);
   
           /* Map the PPC registers */
           if (bus_space_map(sc->sc_iot, SAPPC_BASE, SAPPC_NPORTS,
                             0, &sc->sc_ppch))
                   panic("saip%d: unable to map PPC registers", unit);
   
   #if 0
           /* Map the DMA controller registers */
           if (bus_space_map(sc->sc_iot, SADMAC_BASE, SADMAC_NPORTS,
                             0, &sc->sc_dmach))
                   panic("saip%d: unable to map DMAC registers", unit);
   #endif
           /* Map the reset controller registers */
           if (bus_space_map(sc->sc_iot, SARCR_BASE, PAGE_SIZE,
                             0, &sc->sc_reseth))
                   panic("saip%d: unable to map reset registers", unit);
           printf("\n");
   
           
           /*
            *  Mask all interrupts.
            *  They are later unmasked at each device's attach routine.
            */
           bus_space_write_4(sc->sc_iot, sc->sc_ioh, SAIPIC_MR, 0);
   
           /* Route all bits to IRQ */
           bus_space_write_4(sc->sc_iot, sc->sc_ioh, SAIPIC_LR, 0);
   
           /* Exit idle mode only when unmasked intr is received */
           bus_space_write_4(sc->sc_iot, sc->sc_ioh, SAIPIC_CR, 1);
   #if 0
           /* disable all DMAC channels */
           bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR0_CLR, 1);
           bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR1_CLR, 1);
           bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR2_CLR, 1);
           bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR3_CLR, 1);
           bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR4_CLR, 1);
           bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR5_CLR, 1);
   #endif
           /*
            * XXX this is probably a bad place, but intr bit shouldn't be
            * XXX enabled before intr mask is set.
            * XXX Having sane imask[] suffice??
            */
   #if 0
           SetCPSR(I32_bit, 0);
   #endif
           /*
            *  Attach each devices
            */
           sc->sa11x0_rman.rm_type = RMAN_ARRAY;
           sc->sa11x0_rman.rm_descr = "SA11x0 IRQs";
           if (rman_init(&sc->sa11x0_rman) != 0 ||
               rman_manage_region(&sc->sa11x0_rman, 0, 32) != 0)
                   panic("sa11x0_attach: failed to set up rman");
           device_add_child(dev, "uart", 0);
           device_add_child(dev, "saost", 0);
           bus_generic_probe(dev);
           bus_generic_attach(dev);
           sa11x0_activateirqs();
           return (0);
   }
   
   static device_method_t saip_methods[] = {
           DEVMETHOD(device_probe, sa11x0_probe),
           DEVMETHOD(device_attach, sa11x0_attach),
           DEVMETHOD(device_identify, sa11x0_identify),
           DEVMETHOD(bus_alloc_resource, sa1110_alloc_resource),
           DEVMETHOD(bus_activate_resource, sa1110_activate_resource),
           DEVMETHOD(bus_setup_intr, sa1110_setup_intr),
           {0, 0},
   };
   
   static driver_t saip_driver = {
           "saip",
           saip_methods,
           sizeof(struct sa11x0_softc),
   };
   static devclass_t saip_devclass;
   
   DRIVER_MODULE(saip, nexus, saip_driver, saip_devclass, 0, 0);

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