WebSVN – HelenOS – Diff – /trunk/kernel/arch/ia32/src/smp/apic.c


/*
 * Copyright (c) 2001-2004 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */
 
/** @addtogroup ia32   
 * @{
 */
/** @file
 */
 
#include <arch/types.h>
#include <arch/smp/apic.h>
#include <arch/smp/ap.h>
#include <arch/smp/mps.h>
#include <arch/boot/boot.h>
#include <mm/page.h>
#include <time/delay.h>
#include <interrupt.h>
#include <arch/interrupt.h>
#include <print.h>
#include <arch/asm.h>
#include <arch.h>
#include <ddi/irq.h>
#include <ddi/device.h>
 
#ifdef CONFIG_SMP
 
/*
 * Advanced Programmable Interrupt Controller for SMP systems.
 * Tested on:
 *  Bochs 2.0.2 - Bochs 2.2.6 with 2-8 CPUs
 *  Simics 2.0.28 - Simics 2.2.19 2-15 CPUs
 *  VMware Workstation 5.5 with 2 CPUs
 *  QEMU 0.8.0 with 2-15 CPUs
 *  ASUS P/I-P65UP5 + ASUS C-P55T2D REV. 1.41 with 2x 200Mhz Pentium CPUs
 *  ASUS PCH-DL with 2x 3000Mhz Pentium 4 Xeon (HT) CPUs
 *  MSI K7D Master-L with 2x 2100MHz Athlon MP CPUs
 */
 
/*
 * These variables either stay configured as initilalized, or are changed by
 * the MP configuration code.
 *
 * Pay special attention to the volatile keyword. Without it, gcc -O2 would
 * optimize the code too much and accesses to l_apic and io_apic, that must
 * always be 32-bit, would use byte oriented instructions.
 */
volatile uint32_t *l_apic = (uint32_t *) 0xfee00000;
volatile uint32_t *io_apic = (uint32_t *) 0xfec00000;
 
uint32_t apic_id_mask = 0;
static irq_t l_apic_timer_irq;
 
static int apic_poll_errors(void);
 
#ifdef LAPIC_VERBOSE
static char *delmod_str[] = {
    "Fixed",
    "Lowest Priority",
    "SMI",
    "Reserved",
    "NMI",
    "INIT",
    "STARTUP",
    "ExtInt"
};
 
static char *destmod_str[] = {
    "Physical",
    "Logical"
};
 
static char *trigmod_str[] = {
    "Edge",
    "Level"
};
 
static char *mask_str[] = {
    "Unmasked",
    "Masked"
};
 
static char *delivs_str[] = {
    "Idle",
    "Send Pending"
};
 
static char *tm_mode_str[] = {
    "One-shot",
    "Periodic"
};
 
static char *intpol_str[] = {
    "Polarity High",
    "Polarity Low"
};
#endif /* LAPIC_VERBOSE */
 
/** APIC spurious interrupt handler.
 *
 * @param n Interrupt vector.
 * @param istate Interrupted state.
 */
static void apic_spurious(int n, istate_t *istate)
{
#ifdef CONFIG_DEBUG
    printf("cpu%d: APIC spurious interrupt\n", CPU->id);
#endif
}
 
static irq_ownership_t l_apic_timer_claim(void)
{
    return IRQ_ACCEPT;
}
 
static void l_apic_timer_irq_handler(irq_t *irq, void *arg, ...)
{
    /*
     * Holding a spinlock could prevent clock() from preempting
     * the current thread. In this case, we don't need to hold the
     * irq->lock so we just unlock it and then lock it again.
     */
    spinlock_unlock(&irq->lock);
    clock();
    spinlock_lock(&irq->lock);
}
 
/** Initialize APIC on BSP. */
void apic_init(void)
{
    io_apic_id_t idreg;
    unsigned int i;
 
    exc_register(VECTOR_APIC_SPUR, "apic_spurious", (iroutine) apic_spurious);
 
    enable_irqs_function = io_apic_enable_irqs;
    disable_irqs_function = io_apic_disable_irqs;
    eoi_function = l_apic_eoi;
   
    /*
     * Configure interrupt routing.
     * IRQ 0 remains masked as the time signal is generated by l_apic's themselves.
     * Other interrupts will be forwarded to the lowest priority CPU.
     */
    io_apic_disable_irqs(0xffff);
   
    irq_initialize(&l_apic_timer_irq);
    l_apic_timer_irq.devno = device_assign_devno();
    l_apic_timer_irq.inr = IRQ_CLK;
    l_apic_timer_irq.claim = l_apic_timer_claim;
    l_apic_timer_irq.handler = l_apic_timer_irq_handler;
    irq_register(&l_apic_timer_irq);
   
    for (i = 0; i < IRQ_COUNT; i++) {
        int pin;
   
        if ((pin = smp_irq_to_pin(i)) != -1)
            io_apic_change_ioredtbl(pin, DEST_ALL, IVT_IRQBASE + i, LOPRI);
    }
   
    /*
     * Ensure that io_apic has unique ID.
     */
    idreg.value = io_apic_read(IOAPICID);
    if ((1 << idreg.apic_id) & apic_id_mask) {  /* see if IO APIC ID is used already */
        for (i = 0; i < APIC_ID_COUNT; i++) {
            if (!((1 << i) & apic_id_mask)) {
                idreg.apic_id = i;
                io_apic_write(IOAPICID, idreg.value);
                break;
            }
        }
    }
 
    /*
     * Configure the BSP's lapic.
     */
    l_apic_init();
 
    l_apic_debug();
}
 
/** Poll for APIC errors.
 *
 * Examine Error Status Register and report all errors found.
 *
 * @return 0 on error, 1 on success.
 */
int apic_poll_errors(void)
{
    esr_t esr;
   
    esr.value = l_apic[ESR];
   
    if (esr.send_checksum_error)
        printf("Send Checksum Error\n");
    if (esr.receive_checksum_error)
        printf("Receive Checksum Error\n");
    if (esr.send_accept_error)
        printf("Send Accept Error\n");
    if (esr.receive_accept_error)
        printf("Receive Accept Error\n");
    if (esr.send_illegal_vector)
        printf("Send Illegal Vector\n");
    if (esr.received_illegal_vector)
        printf("Received Illegal Vector\n");
    if (esr.illegal_register_address)
        printf("Illegal Register Address\n");
 
    return !esr.err_bitmap;
}
 
/** Send all CPUs excluding CPU IPI vector.
 *
 * @param vector Interrupt vector to be sent.
 *
 * @return 0 on failure, 1 on success.
 */
int l_apic_broadcast_custom_ipi(uint8_t vector)
{
    icr_t icr;
 
    icr.lo = l_apic[ICRlo];
    icr.delmod = DELMOD_FIXED;
    icr.destmod = DESTMOD_LOGIC;
    icr.level = LEVEL_ASSERT;
    icr.shorthand = SHORTHAND_ALL_EXCL;
    icr.trigger_mode = TRIGMOD_LEVEL;
    icr.vector = vector;
 
    l_apic[ICRlo] = icr.lo;
 
    icr.lo = l_apic[ICRlo];
    if (icr.delivs == DELIVS_PENDING) {
#ifdef CONFIG_DEBUG
        printf("IPI is pending.\n");
#endif
    }
 
    return apic_poll_errors();
}
 
/** Universal Start-up Algorithm for bringing up the AP processors.
 *
 * @param apicid APIC ID of the processor to be brought up.
 *
 * @return 0 on failure, 1 on success.
 */
int l_apic_send_init_ipi(uint8_t apicid)
{
    icr_t icr;
    int i;
 
    /*
     * Read the ICR register in and zero all non-reserved fields.
     */
    icr.lo = l_apic[ICRlo];
    icr.hi = l_apic[ICRhi];
   
    icr.delmod = DELMOD_INIT;
    icr.destmod = DESTMOD_PHYS;
    icr.level = LEVEL_ASSERT;
    icr.trigger_mode = TRIGMOD_LEVEL;
    icr.shorthand = SHORTHAND_NONE;
    icr.vector = 0;
    icr.dest = apicid;
   
    l_apic[ICRhi] = icr.hi;
    l_apic[ICRlo] = icr.lo;
 
    /*
     * According to MP Specification, 20us should be enough to
     * deliver the IPI.
     */
    delay(20);
 
    if (!apic_poll_errors())
        return 0;
 
    icr.lo = l_apic[ICRlo];
    if (icr.delivs == DELIVS_PENDING) {
#ifdef CONFIG_DEBUG
        printf("IPI is pending.\n");
#endif
    }
 
    icr.delmod = DELMOD_INIT;
    icr.destmod = DESTMOD_PHYS;
    icr.level = LEVEL_DEASSERT;
    icr.shorthand = SHORTHAND_NONE;
    icr.trigger_mode = TRIGMOD_LEVEL;
    icr.vector = 0;
    l_apic[ICRlo] = icr.lo;
 
    /*
     * Wait 10ms as MP Specification specifies.
     */
    delay(10000);
 
    if (!is_82489DX_apic(l_apic[LAVR])) {
        /*
         * If this is not 82489DX-based l_apic we must send two STARTUP IPI's.
         */
        for (i = 0; i<2; i++) {
            icr.lo = l_apic[ICRlo];
            icr.vector = ((uintptr_t) ap_boot) / 4096; /* calculate the reset vector */
            icr.delmod = DELMOD_STARTUP;
            icr.destmod = DESTMOD_PHYS;
            icr.level = LEVEL_ASSERT;
            icr.shorthand = SHORTHAND_NONE;
            icr.trigger_mode = TRIGMOD_LEVEL;
            l_apic[ICRlo] = icr.lo;
            delay(200);
        }
    }
   
    return apic_poll_errors();
}
 
/** Initialize Local APIC. */
void l_apic_init(void)
{
    lvt_error_t error;
    lvt_lint_t lint;
    tpr_t tpr;
    svr_t svr;
    icr_t icr;
    tdcr_t tdcr;
    lvt_tm_t tm;
    ldr_t ldr;
    dfr_t dfr;
    uint32_t t1, t2;
 
    /* Initialize LVT Error register. */
    error.value = l_apic[LVT_Err];
    error.masked = true;
    l_apic[LVT_Err] = error.value;
 
    /* Initialize LVT LINT0 register. */
    lint.value = l_apic[LVT_LINT0];
    lint.masked = true;
    l_apic[LVT_LINT0] = lint.value;
 
    /* Initialize LVT LINT1 register. */
    lint.value = l_apic[LVT_LINT1];
    lint.masked = true;
    l_apic[LVT_LINT1] = lint.value;
 
    /* Task Priority Register initialization. */
    tpr.value = l_apic[TPR];
    tpr.pri_sc = 0;
    tpr.pri = 0;
    l_apic[TPR] = tpr.value;
   
    /* Spurious-Interrupt Vector Register initialization. */
    svr.value = l_apic[SVR];
    svr.vector = VECTOR_APIC_SPUR;
    svr.lapic_enabled = true;
    svr.focus_checking = true;
    l_apic[SVR] = svr.value;
 
    if (CPU->arch.family >= 6)
        enable_l_apic_in_msr();
   
    /* Interrupt Command Register initialization. */
    icr.lo = l_apic[ICRlo];
    icr.delmod = DELMOD_INIT;
    icr.destmod = DESTMOD_PHYS;
    icr.level = LEVEL_DEASSERT;
    icr.shorthand = SHORTHAND_ALL_INCL;
    icr.trigger_mode = TRIGMOD_LEVEL;
    l_apic[ICRlo] = icr.lo;
   
    /* Timer Divide Configuration Register initialization. */
    tdcr.value = l_apic[TDCR];
    tdcr.div_value = DIVIDE_1;
    l_apic[TDCR] = tdcr.value;
 
    /* Program local timer. */
    tm.value = l_apic[LVT_Tm];
    tm.vector = VECTOR_CLK;
    tm.mode = TIMER_PERIODIC;
    tm.masked = false;
    l_apic[LVT_Tm] = tm.value;
 
    /*
     * Measure and configure the timer to generate timer
     * interrupt with period 1s/HZ seconds.
     */
    t1 = l_apic[CCRT];
    l_apic[ICRT] = 0xffffffff;
 
    while (l_apic[CCRT] == t1)
        ;
       
    t1 = l_apic[CCRT];
    delay(1000000/HZ);
    t2 = l_apic[CCRT];
   
    l_apic[ICRT] = t1-t2;
   
    /* Program Logical Destination Register. */
    ldr.value = l_apic[LDR];
    if (CPU->id < sizeof(CPU->id)*8)    /* size in bits */
        ldr.id = (1<<CPU->id);
    l_apic[LDR] = ldr.value;
   
    /* Program Destination Format Register for Flat mode. */
    dfr.value = l_apic[DFR];
    dfr.model = MODEL_FLAT;
    l_apic[DFR] = dfr.value;
}
 
/** Local APIC End of Interrupt. */
void l_apic_eoi(void)
{
    l_apic[EOI] = 0;
}
 
/** Dump content of Local APIC registers. */
void l_apic_debug(void)
{
#ifdef LAPIC_VERBOSE
    lvt_tm_t tm;
    lvt_lint_t lint;
    lvt_error_t error; 
   
    printf("LVT on cpu%d, LAPIC ID: %d\n", CPU->id, l_apic_id());
 
    tm.value = l_apic[LVT_Tm];
    printf("LVT Tm: vector=%hhd, %s, %s, %s\n", tm.vector, delivs_str[tm.delivs], mask_str[tm.masked], tm_mode_str[tm.mode]);
    lint.value = l_apic[LVT_LINT0];
    printf("LVT LINT0: vector=%hhd, %s, %s, %s, irr=%d, %s, %s\n", tm.vector, delmod_str[lint.delmod], delivs_str[lint.delivs], intpol_str[lint.intpol], lint.irr, trigmod_str[lint.trigger_mode], mask_str[lint.masked]);
    lint.value = l_apic[LVT_LINT1];
    printf("LVT LINT1: vector=%hhd, %s, %s, %s, irr=%d, %s, %s\n", tm.vector, delmod_str[lint.delmod], delivs_str[lint.delivs], intpol_str[lint.intpol], lint.irr, trigmod_str[lint.trigger_mode], mask_str[lint.masked]); 
    error.value = l_apic[LVT_Err];
    printf("LVT Err: vector=%hhd, %s, %s\n", error.vector, delivs_str[error.delivs], mask_str[error.masked]);
#endif
}
 
/** Get Local APIC ID.
 *
 * @return Local APIC ID.
 */
uint8_t l_apic_id(void)
{
    l_apic_id_t idreg;
   
    idreg.value = l_apic[L_APIC_ID];
    return idreg.apic_id;
}
 
/** Read from IO APIC register.
 *
 * @param address IO APIC register address.
 *
 * @return Content of the addressed IO APIC register.
 */
uint32_t io_apic_read(uint8_t address)
{
    io_regsel_t regsel;
   
    regsel.value = io_apic[IOREGSEL];
    regsel.reg_addr = address;
    io_apic[IOREGSEL] = regsel.value;
    return io_apic[IOWIN];
}
 
/** Write to IO APIC register.
 *
 * @param address IO APIC register address.
 * @param x Content to be written to the addressed IO APIC register.
 */
void io_apic_write(uint8_t address, uint32_t x)
{
    io_regsel_t regsel;
   
    regsel.value = io_apic[IOREGSEL];
    regsel.reg_addr = address;
    io_apic[IOREGSEL] = regsel.value;
    io_apic[IOWIN] = x;
}
 
/** Change some attributes of one item in I/O Redirection Table.
 *
 * @param pin IO APIC pin number.
 * @param dest Interrupt destination address.
 * @param v Interrupt vector to trigger.
 * @param flags Flags.
 */
void io_apic_change_ioredtbl(int pin, int dest, uint8_t v, int flags)
{
    io_redirection_reg_t reg;
    int dlvr = DELMOD_FIXED;
   
    if (flags & LOPRI)
        dlvr = DELMOD_LOWPRI;
 
    reg.lo = io_apic_read(IOREDTBL + pin*2);
    reg.hi = io_apic_read(IOREDTBL + pin*2 + 1);
   
    reg.dest = dest;
    reg.destmod = DESTMOD_LOGIC;
    reg.trigger_mode = TRIGMOD_EDGE;
    reg.intpol = POLARITY_HIGH;
    reg.delmod = dlvr;
    reg.intvec = v;
 
    io_apic_write(IOREDTBL + pin*2, reg.lo);
    io_apic_write(IOREDTBL + pin*2 + 1, reg.hi);
}
 
/** Mask IRQs in IO APIC.
 *
 * @param irqmask Bitmask of IRQs to be masked (0 = do not mask, 1 = mask).
 */
void io_apic_disable_irqs(uint16_t irqmask)
{
    io_redirection_reg_t reg;
    unsigned int i;
    int pin;
   
    for (i = 0; i < 16; i++) {
        if (irqmask & (1 << i)) {
            /*
             * Mask the signal input in IO APIC if there is a
             * mapping for the respective IRQ number.
             */
            pin = smp_irq_to_pin(i);
            if (pin != -1) {
                reg.lo = io_apic_read(IOREDTBL + pin * 2);
                reg.masked = true;
                io_apic_write(IOREDTBL + pin * 2, reg.lo);
            }
           
        }
    }
}
 
/** Unmask IRQs in IO APIC.
 *
 * @param irqmask Bitmask of IRQs to be unmasked (0 = do not unmask, 1 = unmask).
 */
void io_apic_enable_irqs(uint16_t irqmask)
{
    unsigned int i;
    int pin;
    io_redirection_reg_t reg;  
   
    for (i = 0;i < 16; i++) {
        if (irqmask & (1 << i)) {
            /*
             * Unmask the signal input in IO APIC if there is a
             * mapping for the respective IRQ number.
             */
            pin = smp_irq_to_pin(i);
            if (pin != -1) {
                reg.lo = io_apic_read(IOREDTBL + pin * 2);
                reg.masked = false;
                io_apic_write(IOREDTBL + pin * 2, reg.lo);
            }
           
        }
    }
}
 
#endif /* CONFIG_SMP */
 
/** @}
 */
 

Rev 2101	Rev 2217
1	/*	1	/*
2	* Copyright (c) 2001-2004 Jakub Jermar	2	* Copyright (c) 2001-2004 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup ia32	29	/** @addtogroup ia32
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#include <arch/types.h>	35	#include <arch/types.h>
36	#include <arch/smp/apic.h>	36	#include <arch/smp/apic.h>
37	#include <arch/smp/ap.h>	37	#include <arch/smp/ap.h>
38	#include <arch/smp/mps.h>	38	#include <arch/smp/mps.h>
39	#include <arch/boot/boot.h>	39	#include <arch/boot/boot.h>
40	#include <mm/page.h>	40	#include <mm/page.h>
41	#include <time/delay.h>	41	#include <time/delay.h>
42	#include <interrupt.h>	42	#include <interrupt.h>
43	#include <arch/interrupt.h>	43	#include <arch/interrupt.h>
44	#include <print.h>	44	#include <print.h>
45	#include <arch/asm.h>	45	#include <arch/asm.h>
46	#include <arch.h>	46	#include <arch.h>
47	#include <ddi/irq.h>	47	#include <ddi/irq.h>
48	#include <ddi/device.h>	48	#include <ddi/device.h>
49		49
50	#ifdef CONFIG_SMP	50	#ifdef CONFIG_SMP
51		51
52	/*	52	/*
53	* Advanced Programmable Interrupt Controller for SMP systems.	53	* Advanced Programmable Interrupt Controller for SMP systems.
54	* Tested on:	54	* Tested on:
55	* Bochs 2.0.2 - Bochs 2.2.6 with 2-8 CPUs	55	* Bochs 2.0.2 - Bochs 2.2.6 with 2-8 CPUs
56	* Simics 2.0.28 - Simics 2.2.19 2-15 CPUs	56	* Simics 2.0.28 - Simics 2.2.19 2-15 CPUs
57	* VMware Workstation 5.5 with 2 CPUs	57	* VMware Workstation 5.5 with 2 CPUs
58	* QEMU 0.8.0 with 2-15 CPUs	58	* QEMU 0.8.0 with 2-15 CPUs
59	* ASUS P/I-P65UP5 + ASUS C-P55T2D REV. 1.41 with 2x 200Mhz Pentium CPUs	59	* ASUS P/I-P65UP5 + ASUS C-P55T2D REV. 1.41 with 2x 200Mhz Pentium CPUs
60	* ASUS PCH-DL with 2x 3000Mhz Pentium 4 Xeon (HT) CPUs	60	* ASUS PCH-DL with 2x 3000Mhz Pentium 4 Xeon (HT) CPUs
61	* MSI K7D Master-L with 2x 2100MHz Athlon MP CPUs	61	* MSI K7D Master-L with 2x 2100MHz Athlon MP CPUs
62	*/	62	*/
63		63
64	/*	64	/*
65	* These variables either stay configured as initilalized, or are changed by	65	* These variables either stay configured as initilalized, or are changed by
66	* the MP configuration code.	66	* the MP configuration code.
67	*	67	*
68	* Pay special attention to the volatile keyword. Without it, gcc -O2 would	68	* Pay special attention to the volatile keyword. Without it, gcc -O2 would
69	* optimize the code too much and accesses to l_apic and io_apic, that must	69	* optimize the code too much and accesses to l_apic and io_apic, that must
70	* always be 32-bit, would use byte oriented instructions.	70	* always be 32-bit, would use byte oriented instructions.
71	*/	71	*/
72	volatile uint32_t l_apic = (uint32_t ) 0xfee00000;	72	volatile uint32_t l_apic = (uint32_t ) 0xfee00000;
73	volatile uint32_t io_apic = (uint32_t ) 0xfec00000;	73	volatile uint32_t io_apic = (uint32_t ) 0xfec00000;
74		74
75	uint32_t apic_id_mask = 0;	75	uint32_t apic_id_mask = 0;
76	static irq_t l_apic_timer_irq;	76	static irq_t l_apic_timer_irq;
77		77
78	static int apic_poll_errors(void);	78	static int apic_poll_errors(void);
79		79
80	#ifdef LAPIC_VERBOSE	80	#ifdef LAPIC_VERBOSE
81	static char *delmod_str[] = {	81	static char *delmod_str[] = {
82	"Fixed",	82	"Fixed",
83	"Lowest Priority",	83	"Lowest Priority",
84	"SMI",	84	"SMI",
85	"Reserved",	85	"Reserved",
86	"NMI",	86	"NMI",
87	"INIT",	87	"INIT",
88	"STARTUP",	88	"STARTUP",
89	"ExtInt"	89	"ExtInt"
90	};	90	};
91		91
92	static char *destmod_str[] = {	92	static char *destmod_str[] = {
93	"Physical",	93	"Physical",
94	"Logical"	94	"Logical"
95	};	95	};
96		96
97	static char *trigmod_str[] = {	97	static char *trigmod_str[] = {
98	"Edge",	98	"Edge",
99	"Level"	99	"Level"
100	};	100	};
101		101
102	static char *mask_str[] = {	102	static char *mask_str[] = {
103	"Unmasked",	103	"Unmasked",
104	"Masked"	104	"Masked"
105	};	105	};
106		106
107	static char *delivs_str[] = {	107	static char *delivs_str[] = {
108	"Idle",	108	"Idle",
109	"Send Pending"	109	"Send Pending"
110	};	110	};
111		111
112	static char *tm_mode_str[] = {	112	static char *tm_mode_str[] = {
113	"One-shot",	113	"One-shot",
114	"Periodic"	114	"Periodic"
115	};	115	};
116		116
117	static char *intpol_str[] = {	117	static char *intpol_str[] = {
118	"Polarity High",	118	"Polarity High",
119	"Polarity Low"	119	"Polarity Low"
120	};	120	};
121	#endif /* LAPIC_VERBOSE */	121	#endif /* LAPIC_VERBOSE */
122		122
123	/** APIC spurious interrupt handler.	123	/** APIC spurious interrupt handler.
124	*	124	*
125	* @param n Interrupt vector.	125	* @param n Interrupt vector.
126	* @param istate Interrupted state.	126	* @param istate Interrupted state.
127	*/	127	*/
128	static void apic_spurious(int n, istate_t *istate)	128	static void apic_spurious(int n, istate_t *istate)
129	{	129	{
130	#ifdef CONFIG_DEBUG	130	#ifdef CONFIG_DEBUG
131	printf("cpu%d: APIC spurious interrupt\n", CPU->id);	131	printf("cpu%d: APIC spurious interrupt\n", CPU->id);
132	#endif	132	#endif
133	}	133	}
134		134
135	static irq_ownership_t l_apic_timer_claim(void)	135	static irq_ownership_t l_apic_timer_claim(void)
136	{	136	{
137	return IRQ_ACCEPT;	137	return IRQ_ACCEPT;
138	}	138	}
139		139
140	static void l_apic_timer_irq_handler(irq_t irq, void arg, ...)	140	static void l_apic_timer_irq_handler(irq_t irq, void arg, ...)
141	{	141	{
-		142	/*
-		143	* Holding a spinlock could prevent clock() from preempting
-		144	* the current thread. In this case, we don't need to hold the
-		145	* irq->lock so we just unlock it and then lock it again.
-		146	*/
-		147	spinlock_unlock(&irq->lock);
142	clock();	148	clock();
-		149	spinlock_lock(&irq->lock);
143	}	150	}
144		151
145	/** Initialize APIC on BSP. */	152	/** Initialize APIC on BSP. */
146	void apic_init(void)	153	void apic_init(void)
147	{	154	{
148	io_apic_id_t idreg;	155	io_apic_id_t idreg;
149	unsigned int i;	156	unsigned int i;
150		157
151	exc_register(VECTOR_APIC_SPUR, "apic_spurious", (iroutine) apic_spurious);	158	exc_register(VECTOR_APIC_SPUR, "apic_spurious", (iroutine) apic_spurious);
152		159
153	enable_irqs_function = io_apic_enable_irqs;	160	enable_irqs_function = io_apic_enable_irqs;
154	disable_irqs_function = io_apic_disable_irqs;	161	disable_irqs_function = io_apic_disable_irqs;
155	eoi_function = l_apic_eoi;	162	eoi_function = l_apic_eoi;
156		163
157	/*	164	/*
158	* Configure interrupt routing.	165	* Configure interrupt routing.
159	* IRQ 0 remains masked as the time signal is generated by l_apic's themselves.	166	* IRQ 0 remains masked as the time signal is generated by l_apic's themselves.
160	* Other interrupts will be forwarded to the lowest priority CPU.	167	* Other interrupts will be forwarded to the lowest priority CPU.
161	*/	168	*/
162	io_apic_disable_irqs(0xffff);	169	io_apic_disable_irqs(0xffff);
163		170
164	irq_initialize(&l_apic_timer_irq);	171	irq_initialize(&l_apic_timer_irq);
165	l_apic_timer_irq.devno = device_assign_devno();	172	l_apic_timer_irq.devno = device_assign_devno();
166	l_apic_timer_irq.inr = IRQ_CLK;	173	l_apic_timer_irq.inr = IRQ_CLK;
167	l_apic_timer_irq.claim = l_apic_timer_claim;	174	l_apic_timer_irq.claim = l_apic_timer_claim;
168	l_apic_timer_irq.handler = l_apic_timer_irq_handler;	175	l_apic_timer_irq.handler = l_apic_timer_irq_handler;
169	irq_register(&l_apic_timer_irq);	176	irq_register(&l_apic_timer_irq);
170		177
171	for (i = 0; i < IRQ_COUNT; i++) {	178	for (i = 0; i < IRQ_COUNT; i++) {
172	int pin;	179	int pin;
173		180
174	if ((pin = smp_irq_to_pin(i)) != -1)	181	if ((pin = smp_irq_to_pin(i)) != -1)
175	io_apic_change_ioredtbl(pin, DEST_ALL, IVT_IRQBASE + i, LOPRI);	182	io_apic_change_ioredtbl(pin, DEST_ALL, IVT_IRQBASE + i, LOPRI);
176	}	183	}
177		184
178	/*	185	/*
179	* Ensure that io_apic has unique ID.	186	* Ensure that io_apic has unique ID.
180	*/	187	*/
181	idreg.value = io_apic_read(IOAPICID);	188	idreg.value = io_apic_read(IOAPICID);
182	if ((1 << idreg.apic_id) & apic_id_mask) { /* see if IO APIC ID is used already */	189	if ((1 << idreg.apic_id) & apic_id_mask) { /* see if IO APIC ID is used already */
183	for (i = 0; i < APIC_ID_COUNT; i++) {	190	for (i = 0; i < APIC_ID_COUNT; i++) {
184	if (!((1 << i) & apic_id_mask)) {	191	if (!((1 << i) & apic_id_mask)) {
185	idreg.apic_id = i;	192	idreg.apic_id = i;
186	io_apic_write(IOAPICID, idreg.value);	193	io_apic_write(IOAPICID, idreg.value);
187	break;	194	break;
188	}	195	}
189	}	196	}
190	}	197	}
191		198
192	/*	199	/*
193	* Configure the BSP's lapic.	200	* Configure the BSP's lapic.
194	*/	201	*/
195	l_apic_init();	202	l_apic_init();
196		203
197	l_apic_debug();	204	l_apic_debug();
198	}	205	}
199		206
200	/** Poll for APIC errors.	207	/** Poll for APIC errors.
201	*	208	*
202	* Examine Error Status Register and report all errors found.	209	* Examine Error Status Register and report all errors found.
203	*	210	*
204	* @return 0 on error, 1 on success.	211	* @return 0 on error, 1 on success.
205	*/	212	*/
206	int apic_poll_errors(void)	213	int apic_poll_errors(void)
207	{	214	{
208	esr_t esr;	215	esr_t esr;
209		216
210	esr.value = l_apic[ESR];	217	esr.value = l_apic[ESR];
211		218
212	if (esr.send_checksum_error)	219	if (esr.send_checksum_error)
213	printf("Send Checksum Error\n");	220	printf("Send Checksum Error\n");
214	if (esr.receive_checksum_error)	221	if (esr.receive_checksum_error)
215	printf("Receive Checksum Error\n");	222	printf("Receive Checksum Error\n");
216	if (esr.send_accept_error)	223	if (esr.send_accept_error)
217	printf("Send Accept Error\n");	224	printf("Send Accept Error\n");
218	if (esr.receive_accept_error)	225	if (esr.receive_accept_error)
219	printf("Receive Accept Error\n");	226	printf("Receive Accept Error\n");
220	if (esr.send_illegal_vector)	227	if (esr.send_illegal_vector)
221	printf("Send Illegal Vector\n");	228	printf("Send Illegal Vector\n");
222	if (esr.received_illegal_vector)	229	if (esr.received_illegal_vector)
223	printf("Received Illegal Vector\n");	230	printf("Received Illegal Vector\n");
224	if (esr.illegal_register_address)	231	if (esr.illegal_register_address)
225	printf("Illegal Register Address\n");	232	printf("Illegal Register Address\n");
226		233
227	return !esr.err_bitmap;	234	return !esr.err_bitmap;
228	}	235	}
229		236
230	/** Send all CPUs excluding CPU IPI vector.	237	/** Send all CPUs excluding CPU IPI vector.
231	*	238	*
232	* @param vector Interrupt vector to be sent.	239	* @param vector Interrupt vector to be sent.
233	*	240	*
234	* @return 0 on failure, 1 on success.	241	* @return 0 on failure, 1 on success.
235	*/	242	*/
236	int l_apic_broadcast_custom_ipi(uint8_t vector)	243	int l_apic_broadcast_custom_ipi(uint8_t vector)
237	{	244	{
238	icr_t icr;	245	icr_t icr;
239		246
240	icr.lo = l_apic[ICRlo];	247	icr.lo = l_apic[ICRlo];
241	icr.delmod = DELMOD_FIXED;	248	icr.delmod = DELMOD_FIXED;
242	icr.destmod = DESTMOD_LOGIC;	249	icr.destmod = DESTMOD_LOGIC;
243	icr.level = LEVEL_ASSERT;	250	icr.level = LEVEL_ASSERT;
244	icr.shorthand = SHORTHAND_ALL_EXCL;	251	icr.shorthand = SHORTHAND_ALL_EXCL;
245	icr.trigger_mode = TRIGMOD_LEVEL;	252	icr.trigger_mode = TRIGMOD_LEVEL;
246	icr.vector = vector;	253	icr.vector = vector;
247		254
248	l_apic[ICRlo] = icr.lo;	255	l_apic[ICRlo] = icr.lo;
249		256
250	icr.lo = l_apic[ICRlo];	257	icr.lo = l_apic[ICRlo];
251	if (icr.delivs == DELIVS_PENDING) {	258	if (icr.delivs == DELIVS_PENDING) {
252	#ifdef CONFIG_DEBUG	259	#ifdef CONFIG_DEBUG
253	printf("IPI is pending.\n");	260	printf("IPI is pending.\n");
254	#endif	261	#endif
255	}	262	}
256		263
257	return apic_poll_errors();	264	return apic_poll_errors();
258	}	265	}
259		266
260	/** Universal Start-up Algorithm for bringing up the AP processors.	267	/** Universal Start-up Algorithm for bringing up the AP processors.
261	*	268	*
262	* @param apicid APIC ID of the processor to be brought up.	269	* @param apicid APIC ID of the processor to be brought up.
263	*	270	*
264	* @return 0 on failure, 1 on success.	271	* @return 0 on failure, 1 on success.
265	*/	272	*/
266	int l_apic_send_init_ipi(uint8_t apicid)	273	int l_apic_send_init_ipi(uint8_t apicid)
267	{	274	{
268	icr_t icr;	275	icr_t icr;
269	int i;	276	int i;
270		277
271	/*	278	/*
272	* Read the ICR register in and zero all non-reserved fields.	279	* Read the ICR register in and zero all non-reserved fields.
273	*/	280	*/
274	icr.lo = l_apic[ICRlo];	281	icr.lo = l_apic[ICRlo];
275	icr.hi = l_apic[ICRhi];	282	icr.hi = l_apic[ICRhi];
276		283
277	icr.delmod = DELMOD_INIT;	284	icr.delmod = DELMOD_INIT;
278	icr.destmod = DESTMOD_PHYS;	285	icr.destmod = DESTMOD_PHYS;
279	icr.level = LEVEL_ASSERT;	286	icr.level = LEVEL_ASSERT;
280	icr.trigger_mode = TRIGMOD_LEVEL;	287	icr.trigger_mode = TRIGMOD_LEVEL;
281	icr.shorthand = SHORTHAND_NONE;	288	icr.shorthand = SHORTHAND_NONE;
282	icr.vector = 0;	289	icr.vector = 0;
283	icr.dest = apicid;	290	icr.dest = apicid;
284		291
285	l_apic[ICRhi] = icr.hi;	292	l_apic[ICRhi] = icr.hi;
286	l_apic[ICRlo] = icr.lo;	293	l_apic[ICRlo] = icr.lo;
287		294
288	/*	295	/*
289	* According to MP Specification, 20us should be enough to	296	* According to MP Specification, 20us should be enough to
290	* deliver the IPI.	297	* deliver the IPI.
291	*/	298	*/
292	delay(20);	299	delay(20);
293		300
294	if (!apic_poll_errors())	301	if (!apic_poll_errors())
295	return 0;	302	return 0;
296		303
297	icr.lo = l_apic[ICRlo];	304	icr.lo = l_apic[ICRlo];
298	if (icr.delivs == DELIVS_PENDING) {	305	if (icr.delivs == DELIVS_PENDING) {
299	#ifdef CONFIG_DEBUG	306	#ifdef CONFIG_DEBUG
300	printf("IPI is pending.\n");	307	printf("IPI is pending.\n");
301	#endif	308	#endif
302	}	309	}
303		310
304	icr.delmod = DELMOD_INIT;	311	icr.delmod = DELMOD_INIT;
305	icr.destmod = DESTMOD_PHYS;	312	icr.destmod = DESTMOD_PHYS;
306	icr.level = LEVEL_DEASSERT;	313	icr.level = LEVEL_DEASSERT;
307	icr.shorthand = SHORTHAND_NONE;	314	icr.shorthand = SHORTHAND_NONE;
308	icr.trigger_mode = TRIGMOD_LEVEL;	315	icr.trigger_mode = TRIGMOD_LEVEL;
309	icr.vector = 0;	316	icr.vector = 0;
310	l_apic[ICRlo] = icr.lo;	317	l_apic[ICRlo] = icr.lo;
311		318
312	/*	319	/*
313	* Wait 10ms as MP Specification specifies.	320	* Wait 10ms as MP Specification specifies.
314	*/	321	*/
315	delay(10000);	322	delay(10000);
316		323
317	if (!is_82489DX_apic(l_apic[LAVR])) {	324	if (!is_82489DX_apic(l_apic[LAVR])) {
318	/*	325	/*
319	* If this is not 82489DX-based l_apic we must send two STARTUP IPI's.	326	* If this is not 82489DX-based l_apic we must send two STARTUP IPI's.
320	*/	327	*/
321	for (i = 0; i<2; i++) {	328	for (i = 0; i<2; i++) {
322	icr.lo = l_apic[ICRlo];	329	icr.lo = l_apic[ICRlo];
323	icr.vector = ((uintptr_t) ap_boot) / 4096; /* calculate the reset vector */	330	icr.vector = ((uintptr_t) ap_boot) / 4096; /* calculate the reset vector */
324	icr.delmod = DELMOD_STARTUP;	331	icr.delmod = DELMOD_STARTUP;
325	icr.destmod = DESTMOD_PHYS;	332	icr.destmod = DESTMOD_PHYS;
326	icr.level = LEVEL_ASSERT;	333	icr.level = LEVEL_ASSERT;
327	icr.shorthand = SHORTHAND_NONE;	334	icr.shorthand = SHORTHAND_NONE;
328	icr.trigger_mode = TRIGMOD_LEVEL;	335	icr.trigger_mode = TRIGMOD_LEVEL;
329	l_apic[ICRlo] = icr.lo;	336	l_apic[ICRlo] = icr.lo;
330	delay(200);	337	delay(200);
331	}	338	}
332	}	339	}
333		340
334	return apic_poll_errors();	341	return apic_poll_errors();
335	}	342	}
336		343
337	/** Initialize Local APIC. */	344	/** Initialize Local APIC. */
338	void l_apic_init(void)	345	void l_apic_init(void)
339	{	346	{
340	lvt_error_t error;	347	lvt_error_t error;
341	lvt_lint_t lint;	348	lvt_lint_t lint;
342	tpr_t tpr;	349	tpr_t tpr;
343	svr_t svr;	350	svr_t svr;
344	icr_t icr;	351	icr_t icr;
345	tdcr_t tdcr;	352	tdcr_t tdcr;
346	lvt_tm_t tm;	353	lvt_tm_t tm;
347	ldr_t ldr;	354	ldr_t ldr;
348	dfr_t dfr;	355	dfr_t dfr;
349	uint32_t t1, t2;	356	uint32_t t1, t2;
350		357
351	/* Initialize LVT Error register. */	358	/* Initialize LVT Error register. */
352	error.value = l_apic[LVT_Err];	359	error.value = l_apic[LVT_Err];
353	error.masked = true;	360	error.masked = true;
354	l_apic[LVT_Err] = error.value;	361	l_apic[LVT_Err] = error.value;
355		362
356	/* Initialize LVT LINT0 register. */	363	/* Initialize LVT LINT0 register. */
357	lint.value = l_apic[LVT_LINT0];	364	lint.value = l_apic[LVT_LINT0];
358	lint.masked = true;	365	lint.masked = true;
359	l_apic[LVT_LINT0] = lint.value;	366	l_apic[LVT_LINT0] = lint.value;
360		367
361	/* Initialize LVT LINT1 register. */	368	/* Initialize LVT LINT1 register. */
362	lint.value = l_apic[LVT_LINT1];	369	lint.value = l_apic[LVT_LINT1];
363	lint.masked = true;	370	lint.masked = true;
364	l_apic[LVT_LINT1] = lint.value;	371	l_apic[LVT_LINT1] = lint.value;
365		372
366	/* Task Priority Register initialization. */	373	/* Task Priority Register initialization. */
367	tpr.value = l_apic[TPR];	374	tpr.value = l_apic[TPR];
368	tpr.pri_sc = 0;	375	tpr.pri_sc = 0;
369	tpr.pri = 0;	376	tpr.pri = 0;
370	l_apic[TPR] = tpr.value;	377	l_apic[TPR] = tpr.value;
371		378
372	/* Spurious-Interrupt Vector Register initialization. */	379	/* Spurious-Interrupt Vector Register initialization. */
373	svr.value = l_apic[SVR];	380	svr.value = l_apic[SVR];
374	svr.vector = VECTOR_APIC_SPUR;	381	svr.vector = VECTOR_APIC_SPUR;
375	svr.lapic_enabled = true;	382	svr.lapic_enabled = true;
376	svr.focus_checking = true;	383	svr.focus_checking = true;
377	l_apic[SVR] = svr.value;	384	l_apic[SVR] = svr.value;
378		385
379	if (CPU->arch.family >= 6)	386	if (CPU->arch.family >= 6)
380	enable_l_apic_in_msr();	387	enable_l_apic_in_msr();
381		388
382	/* Interrupt Command Register initialization. */	389	/* Interrupt Command Register initialization. */
383	icr.lo = l_apic[ICRlo];	390	icr.lo = l_apic[ICRlo];
384	icr.delmod = DELMOD_INIT;	391	icr.delmod = DELMOD_INIT;
385	icr.destmod = DESTMOD_PHYS;	392	icr.destmod = DESTMOD_PHYS;
386	icr.level = LEVEL_DEASSERT;	393	icr.level = LEVEL_DEASSERT;
387	icr.shorthand = SHORTHAND_ALL_INCL;	394	icr.shorthand = SHORTHAND_ALL_INCL;
388	icr.trigger_mode = TRIGMOD_LEVEL;	395	icr.trigger_mode = TRIGMOD_LEVEL;
389	l_apic[ICRlo] = icr.lo;	396	l_apic[ICRlo] = icr.lo;
390		397
391	/* Timer Divide Configuration Register initialization. */	398	/* Timer Divide Configuration Register initialization. */
392	tdcr.value = l_apic[TDCR];	399	tdcr.value = l_apic[TDCR];
393	tdcr.div_value = DIVIDE_1;	400	tdcr.div_value = DIVIDE_1;
394	l_apic[TDCR] = tdcr.value;	401	l_apic[TDCR] = tdcr.value;
395		402
396	/* Program local timer. */	403	/* Program local timer. */
397	tm.value = l_apic[LVT_Tm];	404	tm.value = l_apic[LVT_Tm];
398	tm.vector = VECTOR_CLK;	405	tm.vector = VECTOR_CLK;
399	tm.mode = TIMER_PERIODIC;	406	tm.mode = TIMER_PERIODIC;
400	tm.masked = false;	407	tm.masked = false;
401	l_apic[LVT_Tm] = tm.value;	408	l_apic[LVT_Tm] = tm.value;
402		409
403	/*	410	/*
404	* Measure and configure the timer to generate timer	411	* Measure and configure the timer to generate timer
405	* interrupt with period 1s/HZ seconds.	412	* interrupt with period 1s/HZ seconds.
406	*/	413	*/
407	t1 = l_apic[CCRT];	414	t1 = l_apic[CCRT];
408	l_apic[ICRT] = 0xffffffff;	415	l_apic[ICRT] = 0xffffffff;
409		416
410	while (l_apic[CCRT] == t1)	417	while (l_apic[CCRT] == t1)
411	;	418	;
412		419
413	t1 = l_apic[CCRT];	420	t1 = l_apic[CCRT];
414	delay(1000000/HZ);	421	delay(1000000/HZ);
415	t2 = l_apic[CCRT];	422	t2 = l_apic[CCRT];
416		423
417	l_apic[ICRT] = t1-t2;	424	l_apic[ICRT] = t1-t2;
418		425
419	/* Program Logical Destination Register. */	426	/* Program Logical Destination Register. */
420	ldr.value = l_apic[LDR];	427	ldr.value = l_apic[LDR];
421	if (CPU->id < sizeof(CPU->id)8) / size in bits */	428	if (CPU->id < sizeof(CPU->id)8) / size in bits */
422	ldr.id = (1<<CPU->id);	429	ldr.id = (1<<CPU->id);
423	l_apic[LDR] = ldr.value;	430	l_apic[LDR] = ldr.value;
424		431
425	/* Program Destination Format Register for Flat mode. */	432	/* Program Destination Format Register for Flat mode. */
426	dfr.value = l_apic[DFR];	433	dfr.value = l_apic[DFR];
427	dfr.model = MODEL_FLAT;	434	dfr.model = MODEL_FLAT;
428	l_apic[DFR] = dfr.value;	435	l_apic[DFR] = dfr.value;
429	}	436	}
430		437
431	/** Local APIC End of Interrupt. */	438	/** Local APIC End of Interrupt. */
432	void l_apic_eoi(void)	439	void l_apic_eoi(void)
433	{	440	{
434	l_apic[EOI] = 0;	441	l_apic[EOI] = 0;
435	}	442	}
436		443
437	/** Dump content of Local APIC registers. */	444	/** Dump content of Local APIC registers. */
438	void l_apic_debug(void)	445	void l_apic_debug(void)
439	{	446	{
440	#ifdef LAPIC_VERBOSE	447	#ifdef LAPIC_VERBOSE
441	lvt_tm_t tm;	448	lvt_tm_t tm;
442	lvt_lint_t lint;	449	lvt_lint_t lint;
443	lvt_error_t error;	450	lvt_error_t error;
444		451
445	printf("LVT on cpu%d, LAPIC ID: %d\n", CPU->id, l_apic_id());	452	printf("LVT on cpu%d, LAPIC ID: %d\n", CPU->id, l_apic_id());
446		453
447	tm.value = l_apic[LVT_Tm];	454	tm.value = l_apic[LVT_Tm];
448	printf("LVT Tm: vector=%hhd, %s, %s, %s\n", tm.vector, delivs_str[tm.delivs], mask_str[tm.masked], tm_mode_str[tm.mode]);	455	printf("LVT Tm: vector=%hhd, %s, %s, %s\n", tm.vector, delivs_str[tm.delivs], mask_str[tm.masked], tm_mode_str[tm.mode]);
449	lint.value = l_apic[LVT_LINT0];	456	lint.value = l_apic[LVT_LINT0];
450	printf("LVT LINT0: vector=%hhd, %s, %s, %s, irr=%d, %s, %s\n", tm.vector, delmod_str[lint.delmod], delivs_str[lint.delivs], intpol_str[lint.intpol], lint.irr, trigmod_str[lint.trigger_mode], mask_str[lint.masked]);	457	printf("LVT LINT0: vector=%hhd, %s, %s, %s, irr=%d, %s, %s\n", tm.vector, delmod_str[lint.delmod], delivs_str[lint.delivs], intpol_str[lint.intpol], lint.irr, trigmod_str[lint.trigger_mode], mask_str[lint.masked]);
451	lint.value = l_apic[LVT_LINT1];	458	lint.value = l_apic[LVT_LINT1];
452	printf("LVT LINT1: vector=%hhd, %s, %s, %s, irr=%d, %s, %s\n", tm.vector, delmod_str[lint.delmod], delivs_str[lint.delivs], intpol_str[lint.intpol], lint.irr, trigmod_str[lint.trigger_mode], mask_str[lint.masked]);	459	printf("LVT LINT1: vector=%hhd, %s, %s, %s, irr=%d, %s, %s\n", tm.vector, delmod_str[lint.delmod], delivs_str[lint.delivs], intpol_str[lint.intpol], lint.irr, trigmod_str[lint.trigger_mode], mask_str[lint.masked]);
453	error.value = l_apic[LVT_Err];	460	error.value = l_apic[LVT_Err];
454	printf("LVT Err: vector=%hhd, %s, %s\n", error.vector, delivs_str[error.delivs], mask_str[error.masked]);	461	printf("LVT Err: vector=%hhd, %s, %s\n", error.vector, delivs_str[error.delivs], mask_str[error.masked]);
455	#endif	462	#endif
456	}	463	}
457		464
458	/** Get Local APIC ID.	465	/** Get Local APIC ID.
459	*	466	*
460	* @return Local APIC ID.	467	* @return Local APIC ID.
461	*/	468	*/
462	uint8_t l_apic_id(void)	469	uint8_t l_apic_id(void)
463	{	470	{
464	l_apic_id_t idreg;	471	l_apic_id_t idreg;
465		472
466	idreg.value = l_apic[L_APIC_ID];	473	idreg.value = l_apic[L_APIC_ID];
467	return idreg.apic_id;	474	return idreg.apic_id;
468	}	475	}
469		476
470	/** Read from IO APIC register.	477	/** Read from IO APIC register.
471	*	478	*
472	* @param address IO APIC register address.	479	* @param address IO APIC register address.
473	*	480	*
474	* @return Content of the addressed IO APIC register.	481	* @return Content of the addressed IO APIC register.
475	*/	482	*/
476	uint32_t io_apic_read(uint8_t address)	483	uint32_t io_apic_read(uint8_t address)
477	{	484	{
478	io_regsel_t regsel;	485	io_regsel_t regsel;
479		486
480	regsel.value = io_apic[IOREGSEL];	487	regsel.value = io_apic[IOREGSEL];
481	regsel.reg_addr = address;	488	regsel.reg_addr = address;
482	io_apic[IOREGSEL] = regsel.value;	489	io_apic[IOREGSEL] = regsel.value;
483	return io_apic[IOWIN];	490	return io_apic[IOWIN];
484	}	491	}
485		492
486	/** Write to IO APIC register.	493	/** Write to IO APIC register.
487	*	494	*
488	* @param address IO APIC register address.	495	* @param address IO APIC register address.
489	* @param x Content to be written to the addressed IO APIC register.	496	* @param x Content to be written to the addressed IO APIC register.
490	*/	497	*/
491	void io_apic_write(uint8_t address, uint32_t x)	498	void io_apic_write(uint8_t address, uint32_t x)
492	{	499	{
493	io_regsel_t regsel;	500	io_regsel_t regsel;

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(root)/trunk/kernel/arch/ia32/src/smp/apic.c @ 2071 – Rev 2101 → 2217