[qemu.git] / hw / intc / exynos4210_gic.c

/*
 * Samsung exynos4210 GIC implementation. Based on hw/arm_gic.c
 *
 * Copyright (c) 2000 - 2011 Samsung Electronics Co., Ltd.
 * All rights reserved.
 *
 * Evgeny Voevodin <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#include "qemu/osdep.h"
#include "hw/sysbus.h"
#include "migration/vmstate.h"
#include "qemu/module.h"
#include "hw/irq.h"
#include "hw/qdev-properties.h"
#include "hw/arm/exynos4210.h"

enum ExtGicId {
    EXT_GIC_ID_MDMA_LCD0 = 66,
    EXT_GIC_ID_PDMA0,
    EXT_GIC_ID_PDMA1,
    EXT_GIC_ID_TIMER0,
    EXT_GIC_ID_TIMER1,
    EXT_GIC_ID_TIMER2,
    EXT_GIC_ID_TIMER3,
    EXT_GIC_ID_TIMER4,
    EXT_GIC_ID_MCT_L0,
    EXT_GIC_ID_WDT,
    EXT_GIC_ID_RTC_ALARM,
    EXT_GIC_ID_RTC_TIC,
    EXT_GIC_ID_GPIO_XB,
    EXT_GIC_ID_GPIO_XA,
    EXT_GIC_ID_MCT_L1,
    EXT_GIC_ID_IEM_APC,
    EXT_GIC_ID_IEM_IEC,
    EXT_GIC_ID_NFC,
    EXT_GIC_ID_UART0,
    EXT_GIC_ID_UART1,
    EXT_GIC_ID_UART2,
    EXT_GIC_ID_UART3,
    EXT_GIC_ID_UART4,
    EXT_GIC_ID_MCT_G0,
    EXT_GIC_ID_I2C0,
    EXT_GIC_ID_I2C1,
    EXT_GIC_ID_I2C2,
    EXT_GIC_ID_I2C3,
    EXT_GIC_ID_I2C4,
    EXT_GIC_ID_I2C5,
    EXT_GIC_ID_I2C6,
    EXT_GIC_ID_I2C7,
    EXT_GIC_ID_SPI0,
    EXT_GIC_ID_SPI1,
    EXT_GIC_ID_SPI2,
    EXT_GIC_ID_MCT_G1,
    EXT_GIC_ID_USB_HOST,
    EXT_GIC_ID_USB_DEVICE,
    EXT_GIC_ID_MODEMIF,
    EXT_GIC_ID_HSMMC0,
    EXT_GIC_ID_HSMMC1,
    EXT_GIC_ID_HSMMC2,
    EXT_GIC_ID_HSMMC3,
    EXT_GIC_ID_SDMMC,
    EXT_GIC_ID_MIPI_CSI_4LANE,
    EXT_GIC_ID_MIPI_DSI_4LANE,
    EXT_GIC_ID_MIPI_CSI_2LANE,
    EXT_GIC_ID_MIPI_DSI_2LANE,
    EXT_GIC_ID_ONENAND_AUDI,
    EXT_GIC_ID_ROTATOR,
    EXT_GIC_ID_FIMC0,
    EXT_GIC_ID_FIMC1,
    EXT_GIC_ID_FIMC2,
    EXT_GIC_ID_FIMC3,
    EXT_GIC_ID_JPEG,
    EXT_GIC_ID_2D,
    EXT_GIC_ID_PCIe,
    EXT_GIC_ID_MIXER,
    EXT_GIC_ID_HDMI,
    EXT_GIC_ID_HDMI_I2C,
    EXT_GIC_ID_MFC,
    EXT_GIC_ID_TVENC,
};

enum ExtInt {
    EXT_GIC_ID_EXTINT0 = 48,
    EXT_GIC_ID_EXTINT1,
    EXT_GIC_ID_EXTINT2,
    EXT_GIC_ID_EXTINT3,
    EXT_GIC_ID_EXTINT4,
    EXT_GIC_ID_EXTINT5,
    EXT_GIC_ID_EXTINT6,
    EXT_GIC_ID_EXTINT7,
    EXT_GIC_ID_EXTINT8,
    EXT_GIC_ID_EXTINT9,
    EXT_GIC_ID_EXTINT10,
    EXT_GIC_ID_EXTINT11,
    EXT_GIC_ID_EXTINT12,
    EXT_GIC_ID_EXTINT13,
    EXT_GIC_ID_EXTINT14,
    EXT_GIC_ID_EXTINT15
};

/*
 * External GIC sources which are not from External Interrupt Combiner or
 * External Interrupts are starting from EXYNOS4210_MAX_EXT_COMBINER_OUT_IRQ,
 * which is INTG16 in Internal Interrupt Combiner.
 */

static const uint32_t
combiner_grp_to_gic_id[64-EXYNOS4210_MAX_EXT_COMBINER_OUT_IRQ][8] = {
    /* int combiner groups 16-19 */
    { }, { }, { }, { },
    /* int combiner group 20 */
    { 0, EXT_GIC_ID_MDMA_LCD0 },
    /* int combiner group 21 */
    { EXT_GIC_ID_PDMA0, EXT_GIC_ID_PDMA1 },
    /* int combiner group 22 */
    { EXT_GIC_ID_TIMER0, EXT_GIC_ID_TIMER1, EXT_GIC_ID_TIMER2,
            EXT_GIC_ID_TIMER3, EXT_GIC_ID_TIMER4 },
    /* int combiner group 23 */
    { EXT_GIC_ID_RTC_ALARM, EXT_GIC_ID_RTC_TIC },
    /* int combiner group 24 */
    { EXT_GIC_ID_GPIO_XB, EXT_GIC_ID_GPIO_XA },
    /* int combiner group 25 */
    { EXT_GIC_ID_IEM_APC, EXT_GIC_ID_IEM_IEC },
    /* int combiner group 26 */
    { EXT_GIC_ID_UART0, EXT_GIC_ID_UART1, EXT_GIC_ID_UART2, EXT_GIC_ID_UART3,
            EXT_GIC_ID_UART4 },
    /* int combiner group 27 */
    { EXT_GIC_ID_I2C0, EXT_GIC_ID_I2C1, EXT_GIC_ID_I2C2, EXT_GIC_ID_I2C3,
            EXT_GIC_ID_I2C4, EXT_GIC_ID_I2C5, EXT_GIC_ID_I2C6,
            EXT_GIC_ID_I2C7 },
    /* int combiner group 28 */
    { EXT_GIC_ID_SPI0, EXT_GIC_ID_SPI1, EXT_GIC_ID_SPI2 , EXT_GIC_ID_USB_HOST},
    /* int combiner group 29 */
    { EXT_GIC_ID_HSMMC0, EXT_GIC_ID_HSMMC1, EXT_GIC_ID_HSMMC2,
     EXT_GIC_ID_HSMMC3, EXT_GIC_ID_SDMMC },
    /* int combiner group 30 */
    { EXT_GIC_ID_MIPI_CSI_4LANE, EXT_GIC_ID_MIPI_CSI_2LANE },
    /* int combiner group 31 */
    { EXT_GIC_ID_MIPI_DSI_4LANE, EXT_GIC_ID_MIPI_DSI_2LANE },
    /* int combiner group 32 */
    { EXT_GIC_ID_FIMC0, EXT_GIC_ID_FIMC1 },
    /* int combiner group 33 */
    { EXT_GIC_ID_FIMC2, EXT_GIC_ID_FIMC3 },
    /* int combiner group 34 */
    { EXT_GIC_ID_ONENAND_AUDI, EXT_GIC_ID_NFC },
    /* int combiner group 35 */
    { 0, 0, 0, EXT_GIC_ID_MCT_L1, EXT_GIC_ID_MCT_G0, EXT_GIC_ID_MCT_G1 },
    /* int combiner group 36 */
    { EXT_GIC_ID_MIXER },
    /* int combiner group 37 */
    { EXT_GIC_ID_EXTINT4, EXT_GIC_ID_EXTINT5, EXT_GIC_ID_EXTINT6,
     EXT_GIC_ID_EXTINT7 },
    /* groups 38-50 */
    { }, { }, { }, { }, { }, { }, { }, { }, { }, { }, { }, { }, { },
    /* int combiner group 51 */
    { EXT_GIC_ID_MCT_L0, 0, 0, 0, EXT_GIC_ID_MCT_G0, EXT_GIC_ID_MCT_G1 },
    /* group 52 */
    { },
    /* int combiner group 53 */
    { EXT_GIC_ID_WDT, 0, 0, 0, EXT_GIC_ID_MCT_G0, EXT_GIC_ID_MCT_G1 },
    /* groups 54-63 */
    { }, { }, { }, { }, { }, { }, { }, { }, { }, { }
};

#define EXYNOS4210_GIC_NIRQ 160

#define EXYNOS4210_EXT_GIC_CPU_REGION_SIZE     0x10000
#define EXYNOS4210_EXT_GIC_DIST_REGION_SIZE    0x10000

#define EXYNOS4210_EXT_GIC_PER_CPU_OFFSET      0x8000
#define EXYNOS4210_EXT_GIC_CPU_GET_OFFSET(n) \
    ((n) * EXYNOS4210_EXT_GIC_PER_CPU_OFFSET)
#define EXYNOS4210_EXT_GIC_DIST_GET_OFFSET(n) \
    ((n) * EXYNOS4210_EXT_GIC_PER_CPU_OFFSET)

#define EXYNOS4210_GIC_CPU_REGION_SIZE  0x100
#define EXYNOS4210_GIC_DIST_REGION_SIZE 0x1000

static void exynos4210_irq_handler(void *opaque, int irq, int level)
{
    Exynos4210Irq *s = (Exynos4210Irq *)opaque;

    /* Bypass */
    qemu_set_irq(s->board_irqs[irq], level);
}

/*
 * Initialize exynos4210 IRQ subsystem stub.
 */
qemu_irq *exynos4210_init_irq(Exynos4210Irq *s)
{
    return qemu_allocate_irqs(exynos4210_irq_handler, s,
            EXYNOS4210_MAX_INT_COMBINER_IN_IRQ);
}

/*
 * Initialize board IRQs.
 * These IRQs contain splitted Int/External Combiner and External Gic IRQs.
 */
void exynos4210_init_board_irqs(Exynos4210Irq *s)
{
    uint32_t grp, bit, irq_id, n;

    for (n = 0; n < EXYNOS4210_MAX_EXT_COMBINER_IN_IRQ; n++) {
        irq_id = 0;
        if (n == EXYNOS4210_COMBINER_GET_IRQ_NUM(1, 4) ||
                n == EXYNOS4210_COMBINER_GET_IRQ_NUM(12, 4)) {
            /* MCT_G0 is passed to External GIC */
            irq_id = EXT_GIC_ID_MCT_G0;
        }
        if (n == EXYNOS4210_COMBINER_GET_IRQ_NUM(1, 5) ||
                n == EXYNOS4210_COMBINER_GET_IRQ_NUM(12, 5)) {
            /* MCT_G1 is passed to External and GIC */
            irq_id = EXT_GIC_ID_MCT_G1;
        }
        if (irq_id) {
            s->board_irqs[n] = qemu_irq_split(s->int_combiner_irq[n],
                    s->ext_gic_irq[irq_id-32]);
        } else {
            s->board_irqs[n] = qemu_irq_split(s->int_combiner_irq[n],
                    s->ext_combiner_irq[n]);
        }
    }
    for (; n < EXYNOS4210_MAX_INT_COMBINER_IN_IRQ; n++) {
        /* these IDs are passed to Internal Combiner and External GIC */
        grp = EXYNOS4210_COMBINER_GET_GRP_NUM(n);
        bit = EXYNOS4210_COMBINER_GET_BIT_NUM(n);
        irq_id = combiner_grp_to_gic_id[grp -
                     EXYNOS4210_MAX_EXT_COMBINER_OUT_IRQ][bit];

        if (irq_id) {
            s->board_irqs[n] = qemu_irq_split(s->int_combiner_irq[n],
                    s->ext_gic_irq[irq_id-32]);
        }
    }
}

/*
 * Get IRQ number from exynos4210 IRQ subsystem stub.
 * To identify IRQ source use internal combiner group and bit number
 *  grp - group number
 *  bit - bit number inside group
 */
uint32_t exynos4210_get_irq(uint32_t grp, uint32_t bit)
{
    return EXYNOS4210_COMBINER_GET_IRQ_NUM(grp, bit);
}

/********* GIC part *********/

#define TYPE_EXYNOS4210_GIC "exynos4210.gic"
#define EXYNOS4210_GIC(obj) \
    OBJECT_CHECK(Exynos4210GicState, (obj), TYPE_EXYNOS4210_GIC)

typedef struct {
    SysBusDevice parent_obj;

    MemoryRegion cpu_container;
    MemoryRegion dist_container;
    MemoryRegion cpu_alias[EXYNOS4210_NCPUS];
    MemoryRegion dist_alias[EXYNOS4210_NCPUS];
    uint32_t num_cpu;
    DeviceState *gic;
} Exynos4210GicState;

static void exynos4210_gic_set_irq(void *opaque, int irq, int level)
{
    Exynos4210GicState *s = (Exynos4210GicState *)opaque;
    qemu_set_irq(qdev_get_gpio_in(s->gic, irq), level);
}

static void exynos4210_gic_realize(DeviceState *dev, Error **errp)
{
    Object *obj = OBJECT(dev);
    Exynos4210GicState *s = EXYNOS4210_GIC(obj);
    SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
    const char cpu_prefix[] = "exynos4210-gic-alias_cpu";
    const char dist_prefix[] = "exynos4210-gic-alias_dist";
    char cpu_alias_name[sizeof(cpu_prefix) + 3];
    char dist_alias_name[sizeof(cpu_prefix) + 3];
    SysBusDevice *gicbusdev;
    uint32_t n = s->num_cpu;
    uint32_t i;

    s->gic = qdev_create(NULL, "arm_gic");
    qdev_prop_set_uint32(s->gic, "num-cpu", s->num_cpu);
    qdev_prop_set_uint32(s->gic, "num-irq", EXYNOS4210_GIC_NIRQ);
    qdev_init_nofail(s->gic);
    gicbusdev = SYS_BUS_DEVICE(s->gic);

    /* Pass through outbound IRQ lines from the GIC */
    sysbus_pass_irq(sbd, gicbusdev);

    /* Pass through inbound GPIO lines to the GIC */
    qdev_init_gpio_in(dev, exynos4210_gic_set_irq,
                      EXYNOS4210_GIC_NIRQ - 32);

    memory_region_init(&s->cpu_container, obj, "exynos4210-cpu-container",
            EXYNOS4210_EXT_GIC_CPU_REGION_SIZE);
    memory_region_init(&s->dist_container, obj, "exynos4210-dist-container",
            EXYNOS4210_EXT_GIC_DIST_REGION_SIZE);

    /*
     * This clues in gcc that our on-stack buffers do, in fact have
     * enough room for the cpu numbers.  gcc 9.2.1 on 32-bit x86
     * doesn't figure this out, otherwise and gives spurious warnings.
     */
    assert(n <= EXYNOS4210_NCPUS);
    for (i = 0; i < n; i++) {
        /* Map CPU interface per SMP Core */
        sprintf(cpu_alias_name, "%s%x", cpu_prefix, i);
        memory_region_init_alias(&s->cpu_alias[i], obj,
                                 cpu_alias_name,
                                 sysbus_mmio_get_region(gicbusdev, 1),
                                 0,
                                 EXYNOS4210_GIC_CPU_REGION_SIZE);
        memory_region_add_subregion(&s->cpu_container,
                EXYNOS4210_EXT_GIC_CPU_GET_OFFSET(i), &s->cpu_alias[i]);

        /* Map Distributor per SMP Core */
        sprintf(dist_alias_name, "%s%x", dist_prefix, i);
        memory_region_init_alias(&s->dist_alias[i], obj,
                                 dist_alias_name,
                                 sysbus_mmio_get_region(gicbusdev, 0),
                                 0,
                                 EXYNOS4210_GIC_DIST_REGION_SIZE);
        memory_region_add_subregion(&s->dist_container,
                EXYNOS4210_EXT_GIC_DIST_GET_OFFSET(i), &s->dist_alias[i]);
    }

    sysbus_init_mmio(sbd, &s->cpu_container);
    sysbus_init_mmio(sbd, &s->dist_container);
}

static Property exynos4210_gic_properties[] = {
    DEFINE_PROP_UINT32("num-cpu", Exynos4210GicState, num_cpu, 1),
    DEFINE_PROP_END_OF_LIST(),
};

static void exynos4210_gic_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);

    dc->props = exynos4210_gic_properties;
    dc->realize = exynos4210_gic_realize;
}

static const TypeInfo exynos4210_gic_info = {
    .name          = TYPE_EXYNOS4210_GIC,
    .parent        = TYPE_SYS_BUS_DEVICE,
    .instance_size = sizeof(Exynos4210GicState),
    .class_init    = exynos4210_gic_class_init,
};

static void exynos4210_gic_register_types(void)
{
    type_register_static(&exynos4210_gic_info);
}

type_init(exynos4210_gic_register_types)

/* IRQ OR Gate struct.
 *
 * This device models an OR gate. There are n_in input qdev gpio lines and one
 * output sysbus IRQ line. The output IRQ level is formed as OR between all
 * gpio inputs.
 */

#define TYPE_EXYNOS4210_IRQ_GATE "exynos4210.irq_gate"
#define EXYNOS4210_IRQ_GATE(obj) \
    OBJECT_CHECK(Exynos4210IRQGateState, (obj), TYPE_EXYNOS4210_IRQ_GATE)

typedef struct Exynos4210IRQGateState {
    SysBusDevice parent_obj;

    uint32_t n_in;      /* inputs amount */
    uint32_t *level;    /* input levels */
    qemu_irq out;       /* output IRQ */
} Exynos4210IRQGateState;

static Property exynos4210_irq_gate_properties[] = {
    DEFINE_PROP_UINT32("n_in", Exynos4210IRQGateState, n_in, 1),
    DEFINE_PROP_END_OF_LIST(),
};

static const VMStateDescription vmstate_exynos4210_irq_gate = {
    .name = "exynos4210.irq_gate",
    .version_id = 2,
    .minimum_version_id = 2,
    .fields = (VMStateField[]) {
        VMSTATE_VBUFFER_UINT32(level, Exynos4210IRQGateState, 1, NULL, n_in),
        VMSTATE_END_OF_LIST()
    }
};

/* Process a change in IRQ input. */
static void exynos4210_irq_gate_handler(void *opaque, int irq, int level)
{
    Exynos4210IRQGateState *s = (Exynos4210IRQGateState *)opaque;
    uint32_t i;

    assert(irq < s->n_in);

    s->level[irq] = level;

    for (i = 0; i < s->n_in; i++) {
        if (s->level[i] >= 1) {
            qemu_irq_raise(s->out);
            return;
        }
    }

    qemu_irq_lower(s->out);
}

static void exynos4210_irq_gate_reset(DeviceState *d)
{
    Exynos4210IRQGateState *s = EXYNOS4210_IRQ_GATE(d);

    memset(s->level, 0, s->n_in * sizeof(*s->level));
}

/*
 * IRQ Gate initialization.
 */
static void exynos4210_irq_gate_init(Object *obj)
{
    Exynos4210IRQGateState *s = EXYNOS4210_IRQ_GATE(obj);
    SysBusDevice *sbd = SYS_BUS_DEVICE(obj);

    sysbus_init_irq(sbd, &s->out);
}

static void exynos4210_irq_gate_realize(DeviceState *dev, Error **errp)
{
    Exynos4210IRQGateState *s = EXYNOS4210_IRQ_GATE(dev);

    /* Allocate general purpose input signals and connect a handler to each of
     * them */
    qdev_init_gpio_in(dev, exynos4210_irq_gate_handler, s->n_in);

    s->level = g_malloc0(s->n_in * sizeof(*s->level));
}

static void exynos4210_irq_gate_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);

    dc->reset = exynos4210_irq_gate_reset;
    dc->vmsd = &vmstate_exynos4210_irq_gate;
    dc->props = exynos4210_irq_gate_properties;
    dc->realize = exynos4210_irq_gate_realize;
}

static const TypeInfo exynos4210_irq_gate_info = {
    .name          = TYPE_EXYNOS4210_IRQ_GATE,
    .parent        = TYPE_SYS_BUS_DEVICE,
    .instance_size = sizeof(Exynos4210IRQGateState),
    .instance_init = exynos4210_irq_gate_init,
    .class_init    = exynos4210_irq_gate_class_init,
};

static void exynos4210_irq_gate_register_types(void)
{
    type_register_static(&exynos4210_irq_gate_info);
}

type_init(exynos4210_irq_gate_register_types)
Commit	Line	Data
8e03cf1e EV	1	/*
	2	* Samsung exynos4210 GIC implementation. Based on hw/arm_gic.c
	3	*
	4	* Copyright (c) 2000 - 2011 Samsung Electronics Co., Ltd.
	5	* All rights reserved.
	6	*
	7	* Evgeny Voevodin <[email protected]>
	8	*
	9	* This program is free software; you can redistribute it and/or modify it
	10	* under the terms of the GNU General Public License as published by the
	11	* Free Software Foundation; either version 2 of the License, or (at your
	12	* option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
	17	* See the GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License along
	20	* with this program; if not, see <http://www.gnu.org/licenses/>.
	21	*/
	22
8ef94f0b	23	#include "qemu/osdep.h"
83c9f4ca	24	#include "hw/sysbus.h"
d6454270	25	#include "migration/vmstate.h"
0b8fa32f	26	#include "qemu/module.h"
83c9f4ca	27	#include "hw/irq.h"
a27bd6c7	28	#include "hw/qdev-properties.h"
0d09e41a	29	#include "hw/arm/exynos4210.h"
8e03cf1e EV	30
	31	enum ExtGicId {
	32	EXT_GIC_ID_MDMA_LCD0 = 66,
	33	EXT_GIC_ID_PDMA0,
	34	EXT_GIC_ID_PDMA1,
	35	EXT_GIC_ID_TIMER0,
	36	EXT_GIC_ID_TIMER1,
	37	EXT_GIC_ID_TIMER2,
	38	EXT_GIC_ID_TIMER3,
	39	EXT_GIC_ID_TIMER4,
	40	EXT_GIC_ID_MCT_L0,
	41	EXT_GIC_ID_WDT,
	42	EXT_GIC_ID_RTC_ALARM,
	43	EXT_GIC_ID_RTC_TIC,
	44	EXT_GIC_ID_GPIO_XB,
	45	EXT_GIC_ID_GPIO_XA,
	46	EXT_GIC_ID_MCT_L1,
	47	EXT_GIC_ID_IEM_APC,
	48	EXT_GIC_ID_IEM_IEC,
	49	EXT_GIC_ID_NFC,
	50	EXT_GIC_ID_UART0,
	51	EXT_GIC_ID_UART1,
	52	EXT_GIC_ID_UART2,
	53	EXT_GIC_ID_UART3,
	54	EXT_GIC_ID_UART4,
	55	EXT_GIC_ID_MCT_G0,
	56	EXT_GIC_ID_I2C0,
	57	EXT_GIC_ID_I2C1,
	58	EXT_GIC_ID_I2C2,
	59	EXT_GIC_ID_I2C3,
	60	EXT_GIC_ID_I2C4,
	61	EXT_GIC_ID_I2C5,
	62	EXT_GIC_ID_I2C6,
	63	EXT_GIC_ID_I2C7,
	64	EXT_GIC_ID_SPI0,
	65	EXT_GIC_ID_SPI1,
	66	EXT_GIC_ID_SPI2,
	67	EXT_GIC_ID_MCT_G1,
	68	EXT_GIC_ID_USB_HOST,
	69	EXT_GIC_ID_USB_DEVICE,
	70	EXT_GIC_ID_MODEMIF,
	71	EXT_GIC_ID_HSMMC0,
	72	EXT_GIC_ID_HSMMC1,
	73	EXT_GIC_ID_HSMMC2,
	74	EXT_GIC_ID_HSMMC3,
	75	EXT_GIC_ID_SDMMC,
	76	EXT_GIC_ID_MIPI_CSI_4LANE,
	77	EXT_GIC_ID_MIPI_DSI_4LANE,
	78	EXT_GIC_ID_MIPI_CSI_2LANE,
	79	EXT_GIC_ID_MIPI_DSI_2LANE,
	80	EXT_GIC_ID_ONENAND_AUDI,
	81	EXT_GIC_ID_ROTATOR,
	82	EXT_GIC_ID_FIMC0,
	83	EXT_GIC_ID_FIMC1,
	84	EXT_GIC_ID_FIMC2,
	85	EXT_GIC_ID_FIMC3,
	86	EXT_GIC_ID_JPEG,
	87	EXT_GIC_ID_2D,
	88	EXT_GIC_ID_PCIe,
	89	EXT_GIC_ID_MIXER,
	90	EXT_GIC_ID_HDMI,
	91	EXT_GIC_ID_HDMI_I2C,
	92	EXT_GIC_ID_MFC,
	93	EXT_GIC_ID_TVENC,
94	};
95
96	enum ExtInt {
97	EXT_GIC_ID_EXTINT0 = 48,
98	EXT_GIC_ID_EXTINT1,
99	EXT_GIC_ID_EXTINT2,
100	EXT_GIC_ID_EXTINT3,
101	EXT_GIC_ID_EXTINT4,
102	EXT_GIC_ID_EXTINT5,
103	EXT_GIC_ID_EXTINT6,
104	EXT_GIC_ID_EXTINT7,
105	EXT_GIC_ID_EXTINT8,
106	EXT_GIC_ID_EXTINT9,
107	EXT_GIC_ID_EXTINT10,
108	EXT_GIC_ID_EXTINT11,
109	EXT_GIC_ID_EXTINT12,
110	EXT_GIC_ID_EXTINT13,
111	EXT_GIC_ID_EXTINT14,
112	EXT_GIC_ID_EXTINT15
113	};
114
115	/*
116	* External GIC sources which are not from External Interrupt Combiner or
117	* External Interrupts are starting from EXYNOS4210_MAX_EXT_COMBINER_OUT_IRQ,
118	* which is INTG16 in Internal Interrupt Combiner.
119	*/
120
5f7f22ff	121	static const uint32_t
8e03cf1e EV	122	combiner_grp_to_gic_id[64-EXYNOS4210_MAX_EXT_COMBINER_OUT_IRQ][8] = {
	123	/* int combiner groups 16-19 */
	124	{ }, { }, { }, { },
	125	/* int combiner group 20 */
	126	{ 0, EXT_GIC_ID_MDMA_LCD0 },
	127	/* int combiner group 21 */
	128	{ EXT_GIC_ID_PDMA0, EXT_GIC_ID_PDMA1 },
	129	/* int combiner group 22 */
	130	{ EXT_GIC_ID_TIMER0, EXT_GIC_ID_TIMER1, EXT_GIC_ID_TIMER2,
	131	EXT_GIC_ID_TIMER3, EXT_GIC_ID_TIMER4 },
	132	/* int combiner group 23 */
	133	{ EXT_GIC_ID_RTC_ALARM, EXT_GIC_ID_RTC_TIC },
	134	/* int combiner group 24 */
	135	{ EXT_GIC_ID_GPIO_XB, EXT_GIC_ID_GPIO_XA },
	136	/* int combiner group 25 */
	137	{ EXT_GIC_ID_IEM_APC, EXT_GIC_ID_IEM_IEC },
	138	/* int combiner group 26 */
	139	{ EXT_GIC_ID_UART0, EXT_GIC_ID_UART1, EXT_GIC_ID_UART2, EXT_GIC_ID_UART3,
	140	EXT_GIC_ID_UART4 },
	141	/* int combiner group 27 */
	142	{ EXT_GIC_ID_I2C0, EXT_GIC_ID_I2C1, EXT_GIC_ID_I2C2, EXT_GIC_ID_I2C3,
	143	EXT_GIC_ID_I2C4, EXT_GIC_ID_I2C5, EXT_GIC_ID_I2C6,
	144	EXT_GIC_ID_I2C7 },
	145	/* int combiner group 28 */
358d615b	146	{ EXT_GIC_ID_SPI0, EXT_GIC_ID_SPI1, EXT_GIC_ID_SPI2 , EXT_GIC_ID_USB_HOST},
8e03cf1e EV	147	/* int combiner group 29 */
	148	{ EXT_GIC_ID_HSMMC0, EXT_GIC_ID_HSMMC1, EXT_GIC_ID_HSMMC2,
	149	EXT_GIC_ID_HSMMC3, EXT_GIC_ID_SDMMC },
	150	/* int combiner group 30 */
	151	{ EXT_GIC_ID_MIPI_CSI_4LANE, EXT_GIC_ID_MIPI_CSI_2LANE },
	152	/* int combiner group 31 */
	153	{ EXT_GIC_ID_MIPI_DSI_4LANE, EXT_GIC_ID_MIPI_DSI_2LANE },
	154	/* int combiner group 32 */
	155	{ EXT_GIC_ID_FIMC0, EXT_GIC_ID_FIMC1 },
	156	/* int combiner group 33 */
	157	{ EXT_GIC_ID_FIMC2, EXT_GIC_ID_FIMC3 },
	158	/* int combiner group 34 */
	159	{ EXT_GIC_ID_ONENAND_AUDI, EXT_GIC_ID_NFC },
	160	/* int combiner group 35 */
	161	{ 0, 0, 0, EXT_GIC_ID_MCT_L1, EXT_GIC_ID_MCT_G0, EXT_GIC_ID_MCT_G1 },
	162	/* int combiner group 36 */
	163	{ EXT_GIC_ID_MIXER },
	164	/* int combiner group 37 */
	165	{ EXT_GIC_ID_EXTINT4, EXT_GIC_ID_EXTINT5, EXT_GIC_ID_EXTINT6,
	166	EXT_GIC_ID_EXTINT7 },
	167	/* groups 38-50 */
	168	{ }, { }, { }, { }, { }, { }, { }, { }, { }, { }, { }, { }, { },
	169	/* int combiner group 51 */
	170	{ EXT_GIC_ID_MCT_L0, 0, 0, 0, EXT_GIC_ID_MCT_G0, EXT_GIC_ID_MCT_G1 },
	171	/* group 52 */
	172	{ },
	173	/* int combiner group 53 */
	174	{ EXT_GIC_ID_WDT, 0, 0, 0, EXT_GIC_ID_MCT_G0, EXT_GIC_ID_MCT_G1 },
	175	/* groups 54-63 */
	176	{ }, { }, { }, { }, { }, { }, { }, { }, { }, { }
	177	};
	178
	179	#define EXYNOS4210_GIC_NIRQ 160
8e03cf1e EV	180
	181	#define EXYNOS4210_EXT_GIC_CPU_REGION_SIZE 0x10000
	182	#define EXYNOS4210_EXT_GIC_DIST_REGION_SIZE 0x10000
	183
	184	#define EXYNOS4210_EXT_GIC_PER_CPU_OFFSET 0x8000
	185	#define EXYNOS4210_EXT_GIC_CPU_GET_OFFSET(n) \
	186	((n) * EXYNOS4210_EXT_GIC_PER_CPU_OFFSET)
	187	#define EXYNOS4210_EXT_GIC_DIST_GET_OFFSET(n) \
	188	((n) * EXYNOS4210_EXT_GIC_PER_CPU_OFFSET)
	189
	190	#define EXYNOS4210_GIC_CPU_REGION_SIZE 0x100
	191	#define EXYNOS4210_GIC_DIST_REGION_SIZE 0x1000
	192
	193	static void exynos4210_irq_handler(void *opaque, int irq, int level)
	194	{
	195	Exynos4210Irq s = (Exynos4210Irq )opaque;
	196
	197	/* Bypass */
	198	qemu_set_irq(s->board_irqs[irq], level);
8e03cf1e EV	199	}
	200
	201	/*
	202	* Initialize exynos4210 IRQ subsystem stub.
	203	*/
	204	qemu_irq exynos4210_init_irq(Exynos4210Irq s)
	205	{
	206	return qemu_allocate_irqs(exynos4210_irq_handler, s,
	207	EXYNOS4210_MAX_INT_COMBINER_IN_IRQ);
	208	}
	209
	210	/*
	211	* Initialize board IRQs.
	212	* These IRQs contain splitted Int/External Combiner and External Gic IRQs.
	213	*/
	214	void exynos4210_init_board_irqs(Exynos4210Irq *s)
	215	{
	216	uint32_t grp, bit, irq_id, n;
	217
	218	for (n = 0; n < EXYNOS4210_MAX_EXT_COMBINER_IN_IRQ; n++) {
8e03cf1e EV	219	irq_id = 0;
	220	if (n == EXYNOS4210_COMBINER_GET_IRQ_NUM(1, 4) \|\|
	221	n == EXYNOS4210_COMBINER_GET_IRQ_NUM(12, 4)) {
	222	/* MCT_G0 is passed to External GIC */
	223	irq_id = EXT_GIC_ID_MCT_G0;
	224	}
	225	if (n == EXYNOS4210_COMBINER_GET_IRQ_NUM(1, 5) \|\|
	226	n == EXYNOS4210_COMBINER_GET_IRQ_NUM(12, 5)) {
	227	/* MCT_G1 is passed to External and GIC */
	228	irq_id = EXT_GIC_ID_MCT_G1;
	229	}
	230	if (irq_id) {
	231	s->board_irqs[n] = qemu_irq_split(s->int_combiner_irq[n],
	232	s->ext_gic_irq[irq_id-32]);
9ff7f5bd SZ	233	} else {
	234	s->board_irqs[n] = qemu_irq_split(s->int_combiner_irq[n],
	235	s->ext_combiner_irq[n]);
8e03cf1e	236	}
8e03cf1e EV	237	}
	238	for (; n < EXYNOS4210_MAX_INT_COMBINER_IN_IRQ; n++) {
	239	/* these IDs are passed to Internal Combiner and External GIC */
	240	grp = EXYNOS4210_COMBINER_GET_GRP_NUM(n);
	241	bit = EXYNOS4210_COMBINER_GET_BIT_NUM(n);
	242	irq_id = combiner_grp_to_gic_id[grp -
	243	EXYNOS4210_MAX_EXT_COMBINER_OUT_IRQ][bit];
	244
	245	if (irq_id) {
	246	s->board_irqs[n] = qemu_irq_split(s->int_combiner_irq[n],
	247	s->ext_gic_irq[irq_id-32]);
	248	}
	249	}
	250	}
	251
	252	/*
	253	* Get IRQ number from exynos4210 IRQ subsystem stub.
	254	* To identify IRQ source use internal combiner group and bit number
	255	* grp - group number
	256	* bit - bit number inside group
	257	*/
	258	uint32_t exynos4210_get_irq(uint32_t grp, uint32_t bit)
	259	{
	260	return EXYNOS4210_COMBINER_GET_IRQ_NUM(grp, bit);
	261	}
	262
	263	/******* GIC part *******/
	264
78c6abbd AF	265	#define TYPE_EXYNOS4210_GIC "exynos4210.gic"
	266	#define EXYNOS4210_GIC(obj) \
	267	OBJECT_CHECK(Exynos4210GicState, (obj), TYPE_EXYNOS4210_GIC)
	268
8e03cf1e	269	typedef struct {
78c6abbd AF	270	SysBusDevice parent_obj;
78c6abbd AF	271
8e03cf1e EV	272	MemoryRegion cpu_container;
8e03cf1e EV	273	MemoryRegion dist_container;
386e2955 PM	274	MemoryRegion cpu_alias[EXYNOS4210_NCPUS];
386e2955 PM	275	MemoryRegion dist_alias[EXYNOS4210_NCPUS];
8e03cf1e	276	uint32_t num_cpu;
23b92f60	277	DeviceState *gic;
8e03cf1e EV	278	} Exynos4210GicState;
8e03cf1e EV	279
23b92f60 PM	280	static void exynos4210_gic_set_irq(void *opaque, int irq, int level)
	281	{
	282	Exynos4210GicState s = (Exynos4210GicState )opaque;
	283	qemu_set_irq(qdev_get_gpio_in(s->gic, irq), level);
	284	}
	285
1ddc9b98	286	static void exynos4210_gic_realize(DeviceState dev, Error *errp)
8e03cf1e	287	{
1ddc9b98	288	Object *obj = OBJECT(dev);
68d71616 XZ	289	Exynos4210GicState *s = EXYNOS4210_GIC(obj);
68d71616 XZ	290	SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
8e03cf1e EV	291	const char cpu_prefix[] = "exynos4210-gic-alias_cpu";
	292	const char dist_prefix[] = "exynos4210-gic-alias_dist";
	293	char cpu_alias_name[sizeof(cpu_prefix) + 3];
	294	char dist_alias_name[sizeof(cpu_prefix) + 3];
ee78356e	295	SysBusDevice *gicbusdev;
16250732	296	uint32_t n = s->num_cpu;
ee78356e	297	uint32_t i;
23b92f60 PM	298
	299	s->gic = qdev_create(NULL, "arm_gic");
	300	qdev_prop_set_uint32(s->gic, "num-cpu", s->num_cpu);
	301	qdev_prop_set_uint32(s->gic, "num-irq", EXYNOS4210_GIC_NIRQ);
	302	qdev_init_nofail(s->gic);
ee78356e	303	gicbusdev = SYS_BUS_DEVICE(s->gic);
23b92f60 PM	304
23b92f60 PM	305	/* Pass through outbound IRQ lines from the GIC */
ee78356e	306	sysbus_pass_irq(sbd, gicbusdev);
8e03cf1e	307
23b92f60	308	/* Pass through inbound GPIO lines to the GIC */
78c6abbd	309	qdev_init_gpio_in(dev, exynos4210_gic_set_irq,
23b92f60	310	EXYNOS4210_GIC_NIRQ - 32);
8e03cf1e	311
68d71616	312	memory_region_init(&s->cpu_container, obj, "exynos4210-cpu-container",
8e03cf1e	313	EXYNOS4210_EXT_GIC_CPU_REGION_SIZE);
68d71616	314	memory_region_init(&s->dist_container, obj, "exynos4210-dist-container",
8e03cf1e EV	315	EXYNOS4210_EXT_GIC_DIST_REGION_SIZE);
8e03cf1e EV	316
16250732 DG	317	/*
	318	* This clues in gcc that our on-stack buffers do, in fact have
	319	* enough room for the cpu numbers. gcc 9.2.1 on 32-bit x86
	320	* doesn't figure this out, otherwise and gives spurious warnings.
	321	*/
	322	assert(n <= EXYNOS4210_NCPUS);
	323	for (i = 0; i < n; i++) {
8e03cf1e EV	324	/* Map CPU interface per SMP Core */
8e03cf1e EV	325	sprintf(cpu_alias_name, "%s%x", cpu_prefix, i);
68d71616	326	memory_region_init_alias(&s->cpu_alias[i], obj,
8e03cf1e	327	cpu_alias_name,
ee78356e	328	sysbus_mmio_get_region(gicbusdev, 1),
8e03cf1e EV	329	0,
	330	EXYNOS4210_GIC_CPU_REGION_SIZE);
	331	memory_region_add_subregion(&s->cpu_container,
	332	EXYNOS4210_EXT_GIC_CPU_GET_OFFSET(i), &s->cpu_alias[i]);
	333
	334	/* Map Distributor per SMP Core */
	335	sprintf(dist_alias_name, "%s%x", dist_prefix, i);
68d71616	336	memory_region_init_alias(&s->dist_alias[i], obj,
8e03cf1e	337	dist_alias_name,
ee78356e	338	sysbus_mmio_get_region(gicbusdev, 0),
8e03cf1e EV	339	0,
	340	EXYNOS4210_GIC_DIST_REGION_SIZE);
	341	memory_region_add_subregion(&s->dist_container,
	342	EXYNOS4210_EXT_GIC_DIST_GET_OFFSET(i), &s->dist_alias[i]);
	343	}
	344
78c6abbd AF	345	sysbus_init_mmio(sbd, &s->cpu_container);
78c6abbd AF	346	sysbus_init_mmio(sbd, &s->dist_container);
8e03cf1e EV	347	}
	348
	349	static Property exynos4210_gic_properties[] = {
	350	DEFINE_PROP_UINT32("num-cpu", Exynos4210GicState, num_cpu, 1),
	351	DEFINE_PROP_END_OF_LIST(),
	352	};
	353
	354	static void exynos4210_gic_class_init(ObjectClass klass, void data)
	355	{
	356	DeviceClass *dc = DEVICE_CLASS(klass);
8e03cf1e	357
8e03cf1e	358	dc->props = exynos4210_gic_properties;
1ddc9b98	359	dc->realize = exynos4210_gic_realize;
8e03cf1e EV	360	}
8e03cf1e EV	361
8c43a6f0	362	static const TypeInfo exynos4210_gic_info = {
78c6abbd	363	.name = TYPE_EXYNOS4210_GIC,
8e03cf1e EV	364	.parent = TYPE_SYS_BUS_DEVICE,
	365	.instance_size = sizeof(Exynos4210GicState),
	366	.class_init = exynos4210_gic_class_init,
	367	};
	368
	369	static void exynos4210_gic_register_types(void)
	370	{
	371	type_register_static(&exynos4210_gic_info);
	372	}
	373
	374	type_init(exynos4210_gic_register_types)
	375
61558e7a EV	376	/* IRQ OR Gate struct.
	377	*
	378	* This device models an OR gate. There are n_in input qdev gpio lines and one
	379	* output sysbus IRQ line. The output IRQ level is formed as OR between all
	380	* gpio inputs.
8e03cf1e	381	*/
c5e22ae3 AF	382
	383	#define TYPE_EXYNOS4210_IRQ_GATE "exynos4210.irq_gate"
	384	#define EXYNOS4210_IRQ_GATE(obj) \
	385	OBJECT_CHECK(Exynos4210IRQGateState, (obj), TYPE_EXYNOS4210_IRQ_GATE)
	386
	387	typedef struct Exynos4210IRQGateState {
	388	SysBusDevice parent_obj;
8e03cf1e	389
61558e7a EV	390	uint32_t n_in; /* inputs amount */
	391	uint32_t level; / input levels */
	392	qemu_irq out; /* output IRQ */
8e03cf1e EV	393	} Exynos4210IRQGateState;
8e03cf1e EV	394
61558e7a EV	395	static Property exynos4210_irq_gate_properties[] = {
	396	DEFINE_PROP_UINT32("n_in", Exynos4210IRQGateState, n_in, 1),
	397	DEFINE_PROP_END_OF_LIST(),
	398	};
	399
8e03cf1e EV	400	static const VMStateDescription vmstate_exynos4210_irq_gate = {
8e03cf1e EV	401	.name = "exynos4210.irq_gate",
61558e7a EV	402	.version_id = 2,
61558e7a EV	403	.minimum_version_id = 2,
8e03cf1e	404	.fields = (VMStateField[]) {
59046ec2	405	VMSTATE_VBUFFER_UINT32(level, Exynos4210IRQGateState, 1, NULL, n_in),
8e03cf1e EV	406	VMSTATE_END_OF_LIST()
	407	}
	408	};
	409
61558e7a	410	/* Process a change in IRQ input. */
8e03cf1e EV	411	static void exynos4210_irq_gate_handler(void *opaque, int irq, int level)
8e03cf1e EV	412	{
61558e7a EV	413	Exynos4210IRQGateState s = (Exynos4210IRQGateState )opaque;
61558e7a EV	414	uint32_t i;
8e03cf1e	415
61558e7a	416	assert(irq < s->n_in);
8e03cf1e	417
61558e7a EV	418	s->level[irq] = level;
	419
	420	for (i = 0; i < s->n_in; i++) {
	421	if (s->level[i] >= 1) {
	422	qemu_irq_raise(s->out);
	423	return;
	424	}
8e03cf1e EV	425	}
8e03cf1e EV	426
61558e7a	427	qemu_irq_lower(s->out);
8e03cf1e EV	428	}
	429
	430	static void exynos4210_irq_gate_reset(DeviceState *d)
	431	{
c5e22ae3	432	Exynos4210IRQGateState *s = EXYNOS4210_IRQ_GATE(d);
8e03cf1e	433
61558e7a	434	memset(s->level, 0, s->n_in * sizeof(*s->level));
8e03cf1e EV	435	}
	436
	437	/*
	438	* IRQ Gate initialization.
	439	*/
68d71616 XZ	440	static void exynos4210_irq_gate_init(Object *obj)
	441	{
	442	Exynos4210IRQGateState *s = EXYNOS4210_IRQ_GATE(obj);
	443	SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
	444
	445	sysbus_init_irq(sbd, &s->out);
	446	}
	447
	448	static void exynos4210_irq_gate_realize(DeviceState dev, Error *errp)
8e03cf1e	449	{
c5e22ae3	450	Exynos4210IRQGateState *s = EXYNOS4210_IRQ_GATE(dev);
8e03cf1e EV	451
	452	/* Allocate general purpose input signals and connect a handler to each of
	453	* them */
c5e22ae3	454	qdev_init_gpio_in(dev, exynos4210_irq_gate_handler, s->n_in);
8e03cf1e	455
61558e7a	456	s->level = g_malloc0(s->n_in * sizeof(*s->level));
8e03cf1e EV	457	}
	458
	459	static void exynos4210_irq_gate_class_init(ObjectClass klass, void data)
	460	{
	461	DeviceClass *dc = DEVICE_CLASS(klass);
8e03cf1e	462
8e03cf1e EV	463	dc->reset = exynos4210_irq_gate_reset;
8e03cf1e EV	464	dc->vmsd = &vmstate_exynos4210_irq_gate;
61558e7a	465	dc->props = exynos4210_irq_gate_properties;
68d71616	466	dc->realize = exynos4210_irq_gate_realize;
8e03cf1e EV	467	}
8e03cf1e EV	468
8c43a6f0	469	static const TypeInfo exynos4210_irq_gate_info = {
c5e22ae3	470	.name = TYPE_EXYNOS4210_IRQ_GATE,
8e03cf1e EV	471	.parent = TYPE_SYS_BUS_DEVICE,
8e03cf1e EV	472	.instance_size = sizeof(Exynos4210IRQGateState),
68d71616	473	.instance_init = exynos4210_irq_gate_init,
8e03cf1e EV	474	.class_init = exynos4210_irq_gate_class_init,
	475	};
	476
	477	static void exynos4210_irq_gate_register_types(void)
	478	{
	479	type_register_static(&exynos4210_irq_gate_info);
	480	}
	481
	482	type_init(exynos4210_irq_gate_register_types)