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3578 vana 1
/*
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 * Copyright (c) 2005 Jakub Vana
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup ia64
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 * @{
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 */
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/** @file
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 */
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#include <arch.h>
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#include <arch/ski/ski.h>
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#include <arch/drivers/it.h>
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#include <arch/interrupt.h>
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#include <arch/barrier.h>
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#include <arch/asm.h>
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#include <arch/register.h>
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#include <arch/types.h>
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#include <arch/context.h>
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#include <arch/stack.h>
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#include <arch/mm/page.h>
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#include <mm/as.h>
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#include <config.h>
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#include <userspace.h>
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#include <console/console.h>
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#include <proc/uarg.h>
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#include <syscall/syscall.h>
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#include <ddi/irq.h>
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#include <ddi/device.h>
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#include <arch/drivers/ega.h>
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#include <arch/bootinfo.h>
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#include <genarch/kbd/i8042.h>
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#include <genarch/kbd/ns16550.h>
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#include <smp/smp.h>
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#include <smp/ipi.h>
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#include <arch/atomic.h>
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#include <panic.h>
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#include <print.h>
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#ifdef CONFIG_SMP
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extern char cpu_by_id_eid_list[256][256];
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static void sapic_init(void)
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{
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    bootinfo->sapic=(unative_t *)(PA2KA((unative_t)(bootinfo->sapic))|FW_OFFSET);
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}
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static void ipi_broadcast_arch_all(int ipi )
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{
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    int id,eid;
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    int myid,myeid;
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    myid=ia64_get_cpu_id();
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    myeid=ia64_get_cpu_eid();
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    for(id=0;id<256;id++)
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        for(eid=0;eid<256;eid++)
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            if((id!=myid) || (eid!=myeid))
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                ipi_send_ipi(id,eid,ipi);
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}
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void ipi_broadcast_arch(int ipi )
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{
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    int id,eid;
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    int myid,myeid;
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    myid=ia64_get_cpu_id();
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    myeid=ia64_get_cpu_eid();
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    //printf("Sending ipi %d on %d\n",ipi,CPU->id);
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    for(id=0;id<256;id++)
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        for(eid=0;eid<256;eid++)
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            if((id!=myid) || (eid!=myeid))
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                if(cpu_by_id_eid_list[id][eid])
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                    ipi_send_ipi(id,eid,ipi);
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}
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void smp_init(void)
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{
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    if(!bootinfo->hello_configured) return;
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    //If we have not system prepared by hello, we are not able to start AP's
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    //this means we are running on simulator
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    sapic_init();
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    ipi_broadcast_arch_all(bootinfo->wakeup_intno);
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    volatile long long brk;
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        for(brk=0;brk<100LL*1024LL*1024LL;brk++); //wait a while before CPUs starts
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    config.cpu_count=0;
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    int id,eid;
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    for(id=0;id<256;id++)
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        for(eid=0;eid<256;eid++)
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                if(cpu_by_id_eid_list[id][eid]==1){
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                    config.cpu_count++;
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                    cpu_by_id_eid_list[id][eid]=2;
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            }
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}
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void kmp(void *arg __attribute__((unused)))
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{
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    int id,eid;
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    int myid,myeid;
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    myid=ia64_get_cpu_id();
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    myeid=ia64_get_cpu_eid();
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    for(id=0;id<256;id++)
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        for(eid=0;eid<256;eid++)
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                if((id!=myid) || (eid!=myeid))
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                    if(cpu_by_id_eid_list[id][eid]!=0){
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                        if(cpu_by_id_eid_list[id][eid]==1){
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                            //config.cpu_count++;
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                            //cpu_by_id_eid_list[id][eid]=2;
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                            printf("Found Late CPU ID:%d EDI:%d Not added to system!!!\n",id,eid);
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                            continue;
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                            }
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                    cpu_by_id_eid_list[id][eid]=3;
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                    /*
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                     * There may be just one AP being initialized at
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                     * the time. After it comes completely up, it is
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                     * supposed to wake us up.
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                     */
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                    if (waitq_sleep_timeout(&ap_completion_wq, 1000000,
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                        SYNCH_FLAGS_NONE) == ESYNCH_TIMEOUT) {
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                        printf("%s: waiting for cpu ID:%d EID:%d"
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                            "timed out\n", __FUNCTION__,
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                            id, eid);
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                        }    
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                }
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}
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#endif
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/*This is just a hack for linking with assembler - may be removed in future*/
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#ifndef CONFIG_SMP
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void main_ap(void);
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void main_ap(void)
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{
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    while(1);
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}
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#endif
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/** @}
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 */
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