[mirror_qemu.git] / hw / intc / imx_avic.c

/*
 * i.MX31 Vectored Interrupt Controller
 *
 * Note this is NOT the PL192 provided by ARM, but
 * a custom implementation by Freescale.
 *
 * Copyright (c) 2008 OKL
 * Copyright (c) 2011 NICTA Pty Ltd
 * Originally written by Hans Jiang
 * Updated by Jean-Christophe Dubois <jcd@tribudubois.net>
 *
 * This code is licensed under the GPL version 2 or later.  See
 * the COPYING file in the top-level directory.
 *
 * TODO: implement vectors.
 */

#include "qemu/osdep.h"
#include "hw/intc/imx_avic.h"
#include "qemu/log.h"
#include "qemu/module.h"

#ifndef DEBUG_IMX_AVIC
#define DEBUG_IMX_AVIC 0
#endif

#define DPRINTF(fmt, args...) \
    do { \
        if (DEBUG_IMX_AVIC) { \
            fprintf(stderr, "[%s]%s: " fmt , TYPE_IMX_AVIC, \
                                             __func__, ##args); \
        } \
    } while (0)

static const VMStateDescription vmstate_imx_avic = {
    .name = TYPE_IMX_AVIC,
    .version_id = 1,
    .minimum_version_id = 1,
    .fields = (VMStateField[]) {
        VMSTATE_UINT64(pending, IMXAVICState),
        VMSTATE_UINT64(enabled, IMXAVICState),
        VMSTATE_UINT64(is_fiq, IMXAVICState),
        VMSTATE_UINT32(intcntl, IMXAVICState),
        VMSTATE_UINT32(intmask, IMXAVICState),
        VMSTATE_UINT32_ARRAY(prio, IMXAVICState, PRIO_WORDS),
        VMSTATE_END_OF_LIST()
    },
};

static inline int imx_avic_prio(IMXAVICState *s, int irq)
{
    uint32_t word = irq / PRIO_PER_WORD;
    uint32_t part = 4 * (irq % PRIO_PER_WORD);
    return 0xf & (s->prio[word] >> part);
}

/* Update interrupts.  */
static void imx_avic_update(IMXAVICState *s)
{
    int i;
    uint64_t new = s->pending & s->enabled;
    uint64_t flags;

    flags = new & s->is_fiq;
    qemu_set_irq(s->fiq, !!flags);

    flags = new & ~s->is_fiq;
    if (!flags || (s->intmask == 0x1f)) {
        qemu_set_irq(s->irq, !!flags);
        return;
    }

    /*
     * Take interrupt if there's a pending interrupt with
     * priority higher than the value of intmask
     */
    for (i = 0; i < IMX_AVIC_NUM_IRQS; i++) {
        if (flags & (1UL << i)) {
            if (imx_avic_prio(s, i) > s->intmask) {
                qemu_set_irq(s->irq, 1);
                return;
            }
        }
    }
    qemu_set_irq(s->irq, 0);
}

static void imx_avic_set_irq(void *opaque, int irq, int level)
{
    IMXAVICState *s = (IMXAVICState *)opaque;

    if (level) {
        DPRINTF("Raising IRQ %d, prio %d\n",
                irq, imx_avic_prio(s, irq));
        s->pending |= (1ULL << irq);
    } else {
        DPRINTF("Clearing IRQ %d, prio %d\n",
                irq, imx_avic_prio(s, irq));
        s->pending &= ~(1ULL << irq);
    }

    imx_avic_update(s);
}


static uint64_t imx_avic_read(void *opaque,
                             hwaddr offset, unsigned size)
{
    IMXAVICState *s = (IMXAVICState *)opaque;

    DPRINTF("read(offset = 0x%" HWADDR_PRIx ")\n", offset);

    switch (offset >> 2) {
    case 0: /* INTCNTL */
        return s->intcntl;

    case 1: /* Normal Interrupt Mask Register, NIMASK */
        return s->intmask;

    case 2: /* Interrupt Enable Number Register, INTENNUM */
    case 3: /* Interrupt Disable Number Register, INTDISNUM */
        return 0;

    case 4: /* Interrupt Enabled Number Register High */
        return s->enabled >> 32;

    case 5: /* Interrupt Enabled Number Register Low */
        return s->enabled & 0xffffffffULL;

    case 6: /* Interrupt Type Register High */
        return s->is_fiq >> 32;

    case 7: /* Interrupt Type Register Low */
        return s->is_fiq & 0xffffffffULL;

    case 8: /* Normal Interrupt Priority Register 7 */
    case 9: /* Normal Interrupt Priority Register 6 */
    case 10:/* Normal Interrupt Priority Register 5 */
    case 11:/* Normal Interrupt Priority Register 4 */
    case 12:/* Normal Interrupt Priority Register 3 */
    case 13:/* Normal Interrupt Priority Register 2 */
    case 14:/* Normal Interrupt Priority Register 1 */
    case 15:/* Normal Interrupt Priority Register 0 */
        return s->prio[15-(offset>>2)];

    case 16: /* Normal interrupt vector and status register */
    {
        /*
         * This returns the highest priority
         * outstanding interrupt.  Where there is more than
         * one pending IRQ with the same priority,
         * take the highest numbered one.
         */
        uint64_t flags = s->pending & s->enabled & ~s->is_fiq;
        int i;
        int prio = -1;
        int irq = -1;
        for (i = 63; i >= 0; --i) {
            if (flags & (1ULL<<i)) {
                int irq_prio = imx_avic_prio(s, i);
                if (irq_prio > prio) {
                    irq = i;
                    prio = irq_prio;
                }
            }
        }
        if (irq >= 0) {
            imx_avic_set_irq(s, irq, 0);
            return irq << 16 | prio;
        }
        return 0xffffffffULL;
    }
    case 17:/* Fast Interrupt vector and status register */
    {
        uint64_t flags = s->pending & s->enabled & s->is_fiq;
        int i = ctz64(flags);
        if (i < 64) {
            imx_avic_set_irq(opaque, i, 0);
            return i;
        }
        return 0xffffffffULL;
    }
    case 18:/* Interrupt source register high */
        return s->pending >> 32;

    case 19:/* Interrupt source register low */
        return s->pending & 0xffffffffULL;

    case 20:/* Interrupt Force Register high */
    case 21:/* Interrupt Force Register low */
        return 0;

    case 22:/* Normal Interrupt Pending Register High */
        return (s->pending & s->enabled & ~s->is_fiq) >> 32;

    case 23:/* Normal Interrupt Pending Register Low */
        return (s->pending & s->enabled & ~s->is_fiq) & 0xffffffffULL;

    case 24: /* Fast Interrupt Pending Register High  */
        return (s->pending & s->enabled & s->is_fiq) >> 32;

    case 25: /* Fast Interrupt Pending Register Low  */
        return (s->pending & s->enabled & s->is_fiq) & 0xffffffffULL;

    case 0x40:            /* AVIC vector 0, use for WFI WAR */
        return 0x4;

    default:
        qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: Bad register at offset 0x%"
                      HWADDR_PRIx "\n", TYPE_IMX_AVIC, __func__, offset);
        return 0;
    }
}

static void imx_avic_write(void *opaque, hwaddr offset,
                          uint64_t val, unsigned size)
{
    IMXAVICState *s = (IMXAVICState *)opaque;

    /* Vector Registers not yet supported */
    if (offset >= 0x100 && offset <= 0x2fc) {
        qemu_log_mask(LOG_UNIMP, "[%s]%s: vector %d ignored\n",
                      TYPE_IMX_AVIC, __func__, (int)((offset - 0x100) >> 2));
        return;
    }

    DPRINTF("(0x%" HWADDR_PRIx ") = 0x%x\n", offset, (unsigned int)val);

    switch (offset >> 2) {
    case 0: /* Interrupt Control Register, INTCNTL */
        s->intcntl = val & (ABFEN | NIDIS | FIDIS | NIAD | FIAD | NM);
        if (s->intcntl & ABFEN) {
            s->intcntl &= ~(val & ABFLAG);
        }
        break;

    case 1: /* Normal Interrupt Mask Register, NIMASK */
        s->intmask = val & 0x1f;
        break;

    case 2: /* Interrupt Enable Number Register, INTENNUM */
        DPRINTF("enable(%d)\n", (int)val);
        val &= 0x3f;
        s->enabled |= (1ULL << val);
        break;

    case 3: /* Interrupt Disable Number Register, INTDISNUM */
        DPRINTF("disable(%d)\n", (int)val);
        val &= 0x3f;
        s->enabled &= ~(1ULL << val);
        break;

    case 4: /* Interrupt Enable Number Register High */
        s->enabled = (s->enabled & 0xffffffffULL) | (val << 32);
        break;

    case 5: /* Interrupt Enable Number Register Low */
        s->enabled = (s->enabled & 0xffffffff00000000ULL) | val;
        break;

    case 6: /* Interrupt Type Register High */
        s->is_fiq = (s->is_fiq & 0xffffffffULL) | (val << 32);
        break;

    case 7: /* Interrupt Type Register Low */
        s->is_fiq = (s->is_fiq & 0xffffffff00000000ULL) | val;
        break;

    case 8: /* Normal Interrupt Priority Register 7 */
    case 9: /* Normal Interrupt Priority Register 6 */
    case 10:/* Normal Interrupt Priority Register 5 */
    case 11:/* Normal Interrupt Priority Register 4 */
    case 12:/* Normal Interrupt Priority Register 3 */
    case 13:/* Normal Interrupt Priority Register 2 */
    case 14:/* Normal Interrupt Priority Register 1 */
    case 15:/* Normal Interrupt Priority Register 0 */
        s->prio[15-(offset>>2)] = val;
        break;

        /* Read-only registers, writes ignored */
    case 16:/* Normal Interrupt Vector and Status register */
    case 17:/* Fast Interrupt vector and status register */
    case 18:/* Interrupt source register high */
    case 19:/* Interrupt source register low */
        return;

    case 20:/* Interrupt Force Register high */
        s->pending = (s->pending & 0xffffffffULL) | (val << 32);
        break;

    case 21:/* Interrupt Force Register low */
        s->pending = (s->pending & 0xffffffff00000000ULL) | val;
        break;

    case 22:/* Normal Interrupt Pending Register High */
    case 23:/* Normal Interrupt Pending Register Low */
    case 24: /* Fast Interrupt Pending Register High  */
    case 25: /* Fast Interrupt Pending Register Low  */
        return;

    default:
        qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: Bad register at offset 0x%"
                      HWADDR_PRIx "\n", TYPE_IMX_AVIC, __func__, offset);
    }
    imx_avic_update(s);
}

static const MemoryRegionOps imx_avic_ops = {
    .read = imx_avic_read,
    .write = imx_avic_write,
    .endianness = DEVICE_NATIVE_ENDIAN,
};

static void imx_avic_reset(DeviceState *dev)
{
    IMXAVICState *s = IMX_AVIC(dev);

    s->pending = 0;
    s->enabled = 0;
    s->is_fiq = 0;
    s->intmask = 0x1f;
    s->intcntl = 0;
    memset(s->prio, 0, sizeof s->prio);
}

static void imx_avic_init(Object *obj)
{
    DeviceState *dev = DEVICE(obj);
    IMXAVICState *s = IMX_AVIC(obj);
    SysBusDevice *sbd = SYS_BUS_DEVICE(obj);

    memory_region_init_io(&s->iomem, obj, &imx_avic_ops, s,
                          TYPE_IMX_AVIC, 0x1000);
    sysbus_init_mmio(sbd, &s->iomem);

    qdev_init_gpio_in(dev, imx_avic_set_irq, IMX_AVIC_NUM_IRQS);
    sysbus_init_irq(sbd, &s->irq);
    sysbus_init_irq(sbd, &s->fiq);
}


static void imx_avic_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);

    dc->vmsd = &vmstate_imx_avic;
    dc->reset = imx_avic_reset;
    dc->desc = "i.MX Advanced Vector Interrupt Controller";
}

static const TypeInfo imx_avic_info = {
    .name = TYPE_IMX_AVIC,
    .parent = TYPE_SYS_BUS_DEVICE,
    .instance_size = sizeof(IMXAVICState),
    .instance_init = imx_avic_init,
    .class_init = imx_avic_class_init,
};

static void imx_avic_register_types(void)
{
    type_register_static(&imx_avic_info);
}

type_init(imx_avic_register_types)
Commit	Line	Data
ff53d4c6 PC	1	/*
	2	* i.MX31 Vectored Interrupt Controller
	3	*
	4	* Note this is NOT the PL192 provided by ARM, but
	5	* a custom implementation by Freescale.
	6	*
	7	* Copyright (c) 2008 OKL
	8	* Copyright (c) 2011 NICTA Pty Ltd
aade7b91	9	* Originally written by Hans Jiang
f250c6a7	10	* Updated by Jean-Christophe Dubois <jcd@tribudubois.net>
ff53d4c6	11	*
aade7b91	12	* This code is licensed under the GPL version 2 or later. See
ff53d4c6 PC	13	* the COPYING file in the top-level directory.
	14	*
	15	* TODO: implement vectors.
	16	*/
	17
8ef94f0b	18	#include "qemu/osdep.h"
f250c6a7	19	#include "hw/intc/imx_avic.h"
03dd024f	20	#include "qemu/log.h"
0b8fa32f	21	#include "qemu/module.h"
ff53d4c6	22
f50ed785 JCD	23	#ifndef DEBUG_IMX_AVIC
f50ed785 JCD	24	#define DEBUG_IMX_AVIC 0
ff53d4c6 PC	25	#endif
ff53d4c6 PC	26
f50ed785 JCD	27	#define DPRINTF(fmt, args...) \
	28	do { \
	29	if (DEBUG_IMX_AVIC) { \
	30	fprintf(stderr, "[%s]%s: " fmt , TYPE_IMX_AVIC, \
	31	__func__, ##args); \
	32	} \
	33	} while (0)
ff53d4c6	34
ff53d4c6	35	static const VMStateDescription vmstate_imx_avic = {
dbeedce7	36	.name = TYPE_IMX_AVIC,
ff53d4c6 PC	37	.version_id = 1,
ff53d4c6 PC	38	.minimum_version_id = 1,
ff53d4c6 PC	39	.fields = (VMStateField[]) {
	40	VMSTATE_UINT64(pending, IMXAVICState),
	41	VMSTATE_UINT64(enabled, IMXAVICState),
	42	VMSTATE_UINT64(is_fiq, IMXAVICState),
	43	VMSTATE_UINT32(intcntl, IMXAVICState),
	44	VMSTATE_UINT32(intmask, IMXAVICState),
	45	VMSTATE_UINT32_ARRAY(prio, IMXAVICState, PRIO_WORDS),
	46	VMSTATE_END_OF_LIST()
	47	},
	48	};
	49
ff53d4c6 PC	50	static inline int imx_avic_prio(IMXAVICState *s, int irq)
	51	{
	52	uint32_t word = irq / PRIO_PER_WORD;
	53	uint32_t part = 4 * (irq % PRIO_PER_WORD);
	54	return 0xf & (s->prio[word] >> part);
	55	}
	56
ff53d4c6 PC	57	/* Update interrupts. */
	58	static void imx_avic_update(IMXAVICState *s)
	59	{
	60	int i;
	61	uint64_t new = s->pending & s->enabled;
	62	uint64_t flags;
	63
	64	flags = new & s->is_fiq;
	65	qemu_set_irq(s->fiq, !!flags);
	66
	67	flags = new & ~s->is_fiq;
	68	if (!flags \|\| (s->intmask == 0x1f)) {
	69	qemu_set_irq(s->irq, !!flags);
	70	return;
	71	}
	72
	73	/*
	74	* Take interrupt if there's a pending interrupt with
	75	* priority higher than the value of intmask
	76	*/
	77	for (i = 0; i < IMX_AVIC_NUM_IRQS; i++) {
	78	if (flags & (1UL << i)) {
	79	if (imx_avic_prio(s, i) > s->intmask) {
	80	qemu_set_irq(s->irq, 1);
	81	return;
	82	}
	83	}
	84	}
	85	qemu_set_irq(s->irq, 0);
	86	}
	87
	88	static void imx_avic_set_irq(void *opaque, int irq, int level)
	89	{
	90	IMXAVICState s = (IMXAVICState )opaque;
	91
	92	if (level) {
	93	DPRINTF("Raising IRQ %d, prio %d\n",
	94	irq, imx_avic_prio(s, irq));
	95	s->pending \|= (1ULL << irq);
	96	} else {
	97	DPRINTF("Clearing IRQ %d, prio %d\n",
	98	irq, imx_avic_prio(s, irq));
	99	s->pending &= ~(1ULL << irq);
	100	}
	101
	102	imx_avic_update(s);
	103	}
	104
	105
	106	static uint64_t imx_avic_read(void *opaque,
a8170e5e	107	hwaddr offset, unsigned size)
ff53d4c6 PC	108	{
	109	IMXAVICState s = (IMXAVICState )opaque;
	110
f50ed785	111	DPRINTF("read(offset = 0x%" HWADDR_PRIx ")\n", offset);
ff53d4c6	112
ff53d4c6 PC	113	switch (offset >> 2) {
	114	case 0: /* INTCNTL */
	115	return s->intcntl;
	116
	117	case 1: /* Normal Interrupt Mask Register, NIMASK */
	118	return s->intmask;
	119
	120	case 2: /* Interrupt Enable Number Register, INTENNUM */
	121	case 3: /* Interrupt Disable Number Register, INTDISNUM */
	122	return 0;
	123
	124	case 4: /* Interrupt Enabled Number Register High */
	125	return s->enabled >> 32;
	126
	127	case 5: /* Interrupt Enabled Number Register Low */
	128	return s->enabled & 0xffffffffULL;
	129
	130	case 6: /* Interrupt Type Register High */
	131	return s->is_fiq >> 32;
	132
	133	case 7: /* Interrupt Type Register Low */
	134	return s->is_fiq & 0xffffffffULL;
	135
	136	case 8: /* Normal Interrupt Priority Register 7 */
	137	case 9: /* Normal Interrupt Priority Register 6 */
	138	case 10:/* Normal Interrupt Priority Register 5 */
	139	case 11:/* Normal Interrupt Priority Register 4 */
	140	case 12:/* Normal Interrupt Priority Register 3 */
	141	case 13:/* Normal Interrupt Priority Register 2 */
	142	case 14:/* Normal Interrupt Priority Register 1 */
	143	case 15:/* Normal Interrupt Priority Register 0 */
	144	return s->prio[15-(offset>>2)];
	145
	146	case 16: /* Normal interrupt vector and status register */
	147	{
	148	/*
	149	* This returns the highest priority
	150	* outstanding interrupt. Where there is more than
	151	* one pending IRQ with the same priority,
	152	* take the highest numbered one.
	153	*/
	154	uint64_t flags = s->pending & s->enabled & ~s->is_fiq;
	155	int i;
	156	int prio = -1;
	157	int irq = -1;
	158	for (i = 63; i >= 0; --i) {
	159	if (flags & (1ULL<<i)) {
	160	int irq_prio = imx_avic_prio(s, i);
	161	if (irq_prio > prio) {
	162	irq = i;
	163	prio = irq_prio;
	164	}
	165	}
	166	}
	167	if (irq >= 0) {
	168	imx_avic_set_irq(s, irq, 0);
	169	return irq << 16 \| prio;
	170	}
	171	return 0xffffffffULL;
	172	}
	173	case 17:/* Fast Interrupt vector and status register */
	174	{
	175	uint64_t flags = s->pending & s->enabled & s->is_fiq;
	176	int i = ctz64(flags);
177	if (i < 64) {
178	imx_avic_set_irq(opaque, i, 0);
179	return i;
180	}
181	return 0xffffffffULL;
182	}
183	case 18:/* Interrupt source register high */
184	return s->pending >> 32;
185
186	case 19:/* Interrupt source register low */
187	return s->pending & 0xffffffffULL;
188
189	case 20:/* Interrupt Force Register high */
190	case 21:/* Interrupt Force Register low */
191	return 0;
192
193	case 22:/* Normal Interrupt Pending Register High */
194	return (s->pending & s->enabled & ~s->is_fiq) >> 32;
195
196	case 23:/* Normal Interrupt Pending Register Low */
197	return (s->pending & s->enabled & ~s->is_fiq) & 0xffffffffULL;
198
199	case 24: /* Fast Interrupt Pending Register High */
200	return (s->pending & s->enabled & s->is_fiq) >> 32;
201
202	case 25: /* Fast Interrupt Pending Register Low */
203	return (s->pending & s->enabled & s->is_fiq) & 0xffffffffULL;
204
205	case 0x40: /* AVIC vector 0, use for WFI WAR */
206	return 0x4;
207
208	default:
f50ed785 JCD	209	qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: Bad register at offset 0x%"
f50ed785 JCD	210	HWADDR_PRIx "\n", TYPE_IMX_AVIC, __func__, offset);
ff53d4c6 PC	211	return 0;
	212	}
	213	}
	214
a8170e5e	215	static void imx_avic_write(void *opaque, hwaddr offset,
ff53d4c6 PC	216	uint64_t val, unsigned size)
	217	{
	218	IMXAVICState s = (IMXAVICState )opaque;
	219
	220	/* Vector Registers not yet supported */
	221	if (offset >= 0x100 && offset <= 0x2fc) {
f50ed785 JCD	222	qemu_log_mask(LOG_UNIMP, "[%s]%s: vector %d ignored\n",
f50ed785 JCD	223	TYPE_IMX_AVIC, __func__, (int)((offset - 0x100) >> 2));
ff53d4c6 PC	224	return;
	225	}
	226
f50ed785 JCD	227	DPRINTF("(0x%" HWADDR_PRIx ") = 0x%x\n", offset, (unsigned int)val);
f50ed785 JCD	228
ff53d4c6 PC	229	switch (offset >> 2) {
	230	case 0: /* Interrupt Control Register, INTCNTL */
	231	s->intcntl = val & (ABFEN \| NIDIS \| FIDIS \| NIAD \| FIAD \| NM);
	232	if (s->intcntl & ABFEN) {
	233	s->intcntl &= ~(val & ABFLAG);
	234	}
	235	break;
	236
	237	case 1: /* Normal Interrupt Mask Register, NIMASK */
	238	s->intmask = val & 0x1f;
	239	break;
	240
	241	case 2: /* Interrupt Enable Number Register, INTENNUM */
	242	DPRINTF("enable(%d)\n", (int)val);
	243	val &= 0x3f;
	244	s->enabled \|= (1ULL << val);
	245	break;
	246
	247	case 3: /* Interrupt Disable Number Register, INTDISNUM */
	248	DPRINTF("disable(%d)\n", (int)val);
	249	val &= 0x3f;
	250	s->enabled &= ~(1ULL << val);
	251	break;
	252
	253	case 4: /* Interrupt Enable Number Register High */
	254	s->enabled = (s->enabled & 0xffffffffULL) \| (val << 32);
	255	break;
	256
	257	case 5: /* Interrupt Enable Number Register Low */
	258	s->enabled = (s->enabled & 0xffffffff00000000ULL) \| val;
	259	break;
	260
	261	case 6: /* Interrupt Type Register High */
	262	s->is_fiq = (s->is_fiq & 0xffffffffULL) \| (val << 32);
	263	break;
	264
	265	case 7: /* Interrupt Type Register Low */
	266	s->is_fiq = (s->is_fiq & 0xffffffff00000000ULL) \| val;
	267	break;
	268
	269	case 8: /* Normal Interrupt Priority Register 7 */
	270	case 9: /* Normal Interrupt Priority Register 6 */
	271	case 10:/* Normal Interrupt Priority Register 5 */
	272	case 11:/* Normal Interrupt Priority Register 4 */
	273	case 12:/* Normal Interrupt Priority Register 3 */
	274	case 13:/* Normal Interrupt Priority Register 2 */
	275	case 14:/* Normal Interrupt Priority Register 1 */
	276	case 15:/* Normal Interrupt Priority Register 0 */
	277	s->prio[15-(offset>>2)] = val;
	278	break;
	279
	280	/* Read-only registers, writes ignored */
	281	case 16:/* Normal Interrupt Vector and Status register */
	282	case 17:/* Fast Interrupt vector and status register */
	283	case 18:/* Interrupt source register high */
	284	case 19:/* Interrupt source register low */
	285	return;
	286
	287	case 20:/* Interrupt Force Register high */
	288	s->pending = (s->pending & 0xffffffffULL) \| (val << 32);
	289	break;
	290
	291	case 21:/* Interrupt Force Register low */
	292	s->pending = (s->pending & 0xffffffff00000000ULL) \| val;
293	break;
294
295	case 22:/* Normal Interrupt Pending Register High */
296	case 23:/* Normal Interrupt Pending Register Low */
297	case 24: /* Fast Interrupt Pending Register High */
298	case 25: /* Fast Interrupt Pending Register Low */
299	return;
300
301	default:
f50ed785 JCD	302	qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: Bad register at offset 0x%"
f50ed785 JCD	303	HWADDR_PRIx "\n", TYPE_IMX_AVIC, __func__, offset);
ff53d4c6 PC	304	}
	305	imx_avic_update(s);
	306	}
	307
	308	static const MemoryRegionOps imx_avic_ops = {
	309	.read = imx_avic_read,
	310	.write = imx_avic_write,
	311	.endianness = DEVICE_NATIVE_ENDIAN,
	312	};
	313
	314	static void imx_avic_reset(DeviceState *dev)
	315	{
5ff94a61 AF	316	IMXAVICState *s = IMX_AVIC(dev);
5ff94a61 AF	317
ff53d4c6 PC	318	s->pending = 0;
	319	s->enabled = 0;
	320	s->is_fiq = 0;
	321	s->intmask = 0x1f;
	322	s->intcntl = 0;
	323	memset(s->prio, 0, sizeof s->prio);
	324	}
	325
f777bda6	326	static void imx_avic_init(Object *obj)
ff53d4c6	327	{
f777bda6 XZ	328	DeviceState *dev = DEVICE(obj);
	329	IMXAVICState *s = IMX_AVIC(obj);
	330	SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
ff53d4c6	331
f777bda6	332	memory_region_init_io(&s->iomem, obj, &imx_avic_ops, s,
f250c6a7	333	TYPE_IMX_AVIC, 0x1000);
5ff94a61	334	sysbus_init_mmio(sbd, &s->iomem);
ff53d4c6	335
5ff94a61 AF	336	qdev_init_gpio_in(dev, imx_avic_set_irq, IMX_AVIC_NUM_IRQS);
	337	sysbus_init_irq(sbd, &s->irq);
	338	sysbus_init_irq(sbd, &s->fiq);
ff53d4c6 PC	339	}
	340
	341
	342	static void imx_avic_class_init(ObjectClass klass, void data)
	343	{
	344	DeviceClass *dc = DEVICE_CLASS(klass);
f777bda6	345
ff53d4c6 PC	346	dc->vmsd = &vmstate_imx_avic;
	347	dc->reset = imx_avic_reset;
	348	dc->desc = "i.MX Advanced Vector Interrupt Controller";
	349	}
	350
	351	static const TypeInfo imx_avic_info = {
5ff94a61	352	.name = TYPE_IMX_AVIC,
ff53d4c6 PC	353	.parent = TYPE_SYS_BUS_DEVICE,
ff53d4c6 PC	354	.instance_size = sizeof(IMXAVICState),
f777bda6	355	.instance_init = imx_avic_init,
ff53d4c6 PC	356	.class_init = imx_avic_class_init,
	357	};
	358
	359	static void imx_avic_register_types(void)
	360	{
	361	type_register_static(&imx_avic_info);
	362	}
	363
	364	type_init(imx_avic_register_types)