[qemu.git] / hw / 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 "hw/sysbus.h"
#include "qemu-common.h"
#include "hw/irq.h"
#include "hw/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 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++) {
        s->board_irqs[n] = qemu_irq_split(s->int_combiner_irq[n],
                s->ext_combiner_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]);
        }

    }
    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 *********/

typedef struct {
    SysBusDevice busdev;
    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 int exynos4210_gic_init(SysBusDevice *dev)
{
    Exynos4210GicState *s = FROM_SYSBUS(Exynos4210GicState, dev);
    uint32_t i;
    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 *busdev;

    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);
    busdev = SYS_BUS_DEVICE(s->gic);

    /* Pass through outbound IRQ lines from the GIC */
    sysbus_pass_irq(dev, busdev);

    /* Pass through inbound GPIO lines to the GIC */
    qdev_init_gpio_in(&s->busdev.qdev, exynos4210_gic_set_irq,
                      EXYNOS4210_GIC_NIRQ - 32);

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

    for (i = 0; i < s->num_cpu; i++) {
        /* Map CPU interface per SMP Core */
        sprintf(cpu_alias_name, "%s%x", cpu_prefix, i);
        memory_region_init_alias(&s->cpu_alias[i],
                                 cpu_alias_name,
                                 sysbus_mmio_get_region(busdev, 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],
                                 dist_alias_name,
                                 sysbus_mmio_get_region(busdev, 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(dev, &s->cpu_container);
    sysbus_init_mmio(dev, &s->dist_container);

    return 0;
}

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);
    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);

    k->init = exynos4210_gic_init;
    dc->props = exynos4210_gic_properties;
}

static const TypeInfo exynos4210_gic_info = {
    .name          = "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.
 */
typedef struct {
    SysBusDevice busdev;

    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,
    .minimum_version_id_old = 2,
    .fields = (VMStateField[]) {
        VMSTATE_VBUFFER_UINT32(level, Exynos4210IRQGateState, 1, NULL, 0, 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 =
            DO_UPCAST(Exynos4210IRQGateState, busdev.qdev, d);

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

/*
 * IRQ Gate initialization.
 */
static int exynos4210_irq_gate_init(SysBusDevice *dev)
{
    Exynos4210IRQGateState *s = FROM_SYSBUS(Exynos4210IRQGateState, dev);

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

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

    sysbus_init_irq(dev, &s->out);

    return 0;
}

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

    k->init = exynos4210_irq_gate_init;
    dc->reset = exynos4210_irq_gate_reset;
    dc->vmsd = &vmstate_exynos4210_irq_gate;
    dc->props = exynos4210_irq_gate_properties;
}

static const TypeInfo exynos4210_irq_gate_info = {
    .name          = "exynos4210.irq_gate",
    .parent        = TYPE_SYS_BUS_DEVICE,
    .instance_size = sizeof(Exynos4210IRQGateState),
    .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
83c9f4ca	23	#include "hw/sysbus.h"
8e03cf1e	24	#include "qemu-common.h"
83c9f4ca PB	25	#include "hw/irq.h"
83c9f4ca PB	26	#include "hw/exynos4210.h"
8e03cf1e EV	27
	28	enum ExtGicId {
	29	EXT_GIC_ID_MDMA_LCD0 = 66,
	30	EXT_GIC_ID_PDMA0,
	31	EXT_GIC_ID_PDMA1,
	32	EXT_GIC_ID_TIMER0,
	33	EXT_GIC_ID_TIMER1,
	34	EXT_GIC_ID_TIMER2,
	35	EXT_GIC_ID_TIMER3,
	36	EXT_GIC_ID_TIMER4,
	37	EXT_GIC_ID_MCT_L0,
	38	EXT_GIC_ID_WDT,
	39	EXT_GIC_ID_RTC_ALARM,
	40	EXT_GIC_ID_RTC_TIC,
	41	EXT_GIC_ID_GPIO_XB,
	42	EXT_GIC_ID_GPIO_XA,
	43	EXT_GIC_ID_MCT_L1,
	44	EXT_GIC_ID_IEM_APC,
	45	EXT_GIC_ID_IEM_IEC,
	46	EXT_GIC_ID_NFC,
	47	EXT_GIC_ID_UART0,
	48	EXT_GIC_ID_UART1,
	49	EXT_GIC_ID_UART2,
	50	EXT_GIC_ID_UART3,
	51	EXT_GIC_ID_UART4,
	52	EXT_GIC_ID_MCT_G0,
	53	EXT_GIC_ID_I2C0,
	54	EXT_GIC_ID_I2C1,
	55	EXT_GIC_ID_I2C2,
	56	EXT_GIC_ID_I2C3,
	57	EXT_GIC_ID_I2C4,
	58	EXT_GIC_ID_I2C5,
	59	EXT_GIC_ID_I2C6,
	60	EXT_GIC_ID_I2C7,
	61	EXT_GIC_ID_SPI0,
	62	EXT_GIC_ID_SPI1,
	63	EXT_GIC_ID_SPI2,
	64	EXT_GIC_ID_MCT_G1,
	65	EXT_GIC_ID_USB_HOST,
	66	EXT_GIC_ID_USB_DEVICE,
	67	EXT_GIC_ID_MODEMIF,
	68	EXT_GIC_ID_HSMMC0,
	69	EXT_GIC_ID_HSMMC1,
	70	EXT_GIC_ID_HSMMC2,
	71	EXT_GIC_ID_HSMMC3,
	72	EXT_GIC_ID_SDMMC,
	73	EXT_GIC_ID_MIPI_CSI_4LANE,
	74	EXT_GIC_ID_MIPI_DSI_4LANE,
	75	EXT_GIC_ID_MIPI_CSI_2LANE,
	76	EXT_GIC_ID_MIPI_DSI_2LANE,
	77	EXT_GIC_ID_ONENAND_AUDI,
	78	EXT_GIC_ID_ROTATOR,
	79	EXT_GIC_ID_FIMC0,
	80	EXT_GIC_ID_FIMC1,
	81	EXT_GIC_ID_FIMC2,
	82	EXT_GIC_ID_FIMC3,
	83	EXT_GIC_ID_JPEG,
	84	EXT_GIC_ID_2D,
	85	EXT_GIC_ID_PCIe,
	86	EXT_GIC_ID_MIXER,
	87	EXT_GIC_ID_HDMI,
	88	EXT_GIC_ID_HDMI_I2C,
	89	EXT_GIC_ID_MFC,
	90	EXT_GIC_ID_TVENC,
91	};
92
93	enum ExtInt {
94	EXT_GIC_ID_EXTINT0 = 48,
95	EXT_GIC_ID_EXTINT1,
96	EXT_GIC_ID_EXTINT2,
97	EXT_GIC_ID_EXTINT3,
98	EXT_GIC_ID_EXTINT4,
99	EXT_GIC_ID_EXTINT5,
100	EXT_GIC_ID_EXTINT6,
101	EXT_GIC_ID_EXTINT7,
102	EXT_GIC_ID_EXTINT8,
103	EXT_GIC_ID_EXTINT9,
104	EXT_GIC_ID_EXTINT10,
105	EXT_GIC_ID_EXTINT11,
106	EXT_GIC_ID_EXTINT12,
107	EXT_GIC_ID_EXTINT13,
108	EXT_GIC_ID_EXTINT14,
109	EXT_GIC_ID_EXTINT15
110	};
111
112	/*
113	* External GIC sources which are not from External Interrupt Combiner or
114	* External Interrupts are starting from EXYNOS4210_MAX_EXT_COMBINER_OUT_IRQ,
115	* which is INTG16 in Internal Interrupt Combiner.
116	*/
117
118	static uint32_t
119	combiner_grp_to_gic_id[64-EXYNOS4210_MAX_EXT_COMBINER_OUT_IRQ][8] = {
120	/* int combiner groups 16-19 */
121	{ }, { }, { }, { },
122	/* int combiner group 20 */
123	{ 0, EXT_GIC_ID_MDMA_LCD0 },
124	/* int combiner group 21 */
125	{ EXT_GIC_ID_PDMA0, EXT_GIC_ID_PDMA1 },
126	/* int combiner group 22 */
127	{ EXT_GIC_ID_TIMER0, EXT_GIC_ID_TIMER1, EXT_GIC_ID_TIMER2,
128	EXT_GIC_ID_TIMER3, EXT_GIC_ID_TIMER4 },
129	/* int combiner group 23 */
130	{ EXT_GIC_ID_RTC_ALARM, EXT_GIC_ID_RTC_TIC },
131	/* int combiner group 24 */
132	{ EXT_GIC_ID_GPIO_XB, EXT_GIC_ID_GPIO_XA },
133	/* int combiner group 25 */
134	{ EXT_GIC_ID_IEM_APC, EXT_GIC_ID_IEM_IEC },
135	/* int combiner group 26 */
136	{ EXT_GIC_ID_UART0, EXT_GIC_ID_UART1, EXT_GIC_ID_UART2, EXT_GIC_ID_UART3,
137	EXT_GIC_ID_UART4 },
138	/* int combiner group 27 */
139	{ EXT_GIC_ID_I2C0, EXT_GIC_ID_I2C1, EXT_GIC_ID_I2C2, EXT_GIC_ID_I2C3,
140	EXT_GIC_ID_I2C4, EXT_GIC_ID_I2C5, EXT_GIC_ID_I2C6,
141	EXT_GIC_ID_I2C7 },
142	/* int combiner group 28 */
358d615b	143	{ EXT_GIC_ID_SPI0, EXT_GIC_ID_SPI1, EXT_GIC_ID_SPI2 , EXT_GIC_ID_USB_HOST},
8e03cf1e EV	144	/* int combiner group 29 */
	145	{ EXT_GIC_ID_HSMMC0, EXT_GIC_ID_HSMMC1, EXT_GIC_ID_HSMMC2,
	146	EXT_GIC_ID_HSMMC3, EXT_GIC_ID_SDMMC },
	147	/* int combiner group 30 */
	148	{ EXT_GIC_ID_MIPI_CSI_4LANE, EXT_GIC_ID_MIPI_CSI_2LANE },
	149	/* int combiner group 31 */
	150	{ EXT_GIC_ID_MIPI_DSI_4LANE, EXT_GIC_ID_MIPI_DSI_2LANE },
	151	/* int combiner group 32 */
	152	{ EXT_GIC_ID_FIMC0, EXT_GIC_ID_FIMC1 },
	153	/* int combiner group 33 */
	154	{ EXT_GIC_ID_FIMC2, EXT_GIC_ID_FIMC3 },
	155	/* int combiner group 34 */
	156	{ EXT_GIC_ID_ONENAND_AUDI, EXT_GIC_ID_NFC },
	157	/* int combiner group 35 */
	158	{ 0, 0, 0, EXT_GIC_ID_MCT_L1, EXT_GIC_ID_MCT_G0, EXT_GIC_ID_MCT_G1 },
	159	/* int combiner group 36 */
	160	{ EXT_GIC_ID_MIXER },
	161	/* int combiner group 37 */
	162	{ EXT_GIC_ID_EXTINT4, EXT_GIC_ID_EXTINT5, EXT_GIC_ID_EXTINT6,
	163	EXT_GIC_ID_EXTINT7 },
	164	/* groups 38-50 */
	165	{ }, { }, { }, { }, { }, { }, { }, { }, { }, { }, { }, { }, { },
	166	/* int combiner group 51 */
	167	{ EXT_GIC_ID_MCT_L0, 0, 0, 0, EXT_GIC_ID_MCT_G0, EXT_GIC_ID_MCT_G1 },
	168	/* group 52 */
	169	{ },
	170	/* int combiner group 53 */
	171	{ EXT_GIC_ID_WDT, 0, 0, 0, EXT_GIC_ID_MCT_G0, EXT_GIC_ID_MCT_G1 },
	172	/* groups 54-63 */
	173	{ }, { }, { }, { }, { }, { }, { }, { }, { }, { }
	174	};
	175
	176	#define EXYNOS4210_GIC_NIRQ 160
8e03cf1e EV	177
	178	#define EXYNOS4210_EXT_GIC_CPU_REGION_SIZE 0x10000
	179	#define EXYNOS4210_EXT_GIC_DIST_REGION_SIZE 0x10000
	180
	181	#define EXYNOS4210_EXT_GIC_PER_CPU_OFFSET 0x8000
	182	#define EXYNOS4210_EXT_GIC_CPU_GET_OFFSET(n) \
	183	((n) * EXYNOS4210_EXT_GIC_PER_CPU_OFFSET)
	184	#define EXYNOS4210_EXT_GIC_DIST_GET_OFFSET(n) \
	185	((n) * EXYNOS4210_EXT_GIC_PER_CPU_OFFSET)
	186
	187	#define EXYNOS4210_GIC_CPU_REGION_SIZE 0x100
	188	#define EXYNOS4210_GIC_DIST_REGION_SIZE 0x1000
	189
	190	static void exynos4210_irq_handler(void *opaque, int irq, int level)
	191	{
	192	Exynos4210Irq s = (Exynos4210Irq )opaque;
	193
	194	/* Bypass */
	195	qemu_set_irq(s->board_irqs[irq], level);
8e03cf1e EV	196	}
	197
	198	/*
	199	* Initialize exynos4210 IRQ subsystem stub.
	200	*/
	201	qemu_irq exynos4210_init_irq(Exynos4210Irq s)
	202	{
	203	return qemu_allocate_irqs(exynos4210_irq_handler, s,
	204	EXYNOS4210_MAX_INT_COMBINER_IN_IRQ);
	205	}
	206
	207	/*
	208	* Initialize board IRQs.
	209	* These IRQs contain splitted Int/External Combiner and External Gic IRQs.
	210	*/
	211	void exynos4210_init_board_irqs(Exynos4210Irq *s)
	212	{
	213	uint32_t grp, bit, irq_id, n;
	214
	215	for (n = 0; n < EXYNOS4210_MAX_EXT_COMBINER_IN_IRQ; n++) {
	216	s->board_irqs[n] = qemu_irq_split(s->int_combiner_irq[n],
	217	s->ext_combiner_irq[n]);
	218
	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]);
	233	}
	234
	235	}
	236	for (; n < EXYNOS4210_MAX_INT_COMBINER_IN_IRQ; n++) {
	237	/* these IDs are passed to Internal Combiner and External GIC */
	238	grp = EXYNOS4210_COMBINER_GET_GRP_NUM(n);
	239	bit = EXYNOS4210_COMBINER_GET_BIT_NUM(n);
	240	irq_id = combiner_grp_to_gic_id[grp -
	241	EXYNOS4210_MAX_EXT_COMBINER_OUT_IRQ][bit];
	242
	243	if (irq_id) {
	244	s->board_irqs[n] = qemu_irq_split(s->int_combiner_irq[n],
	245	s->ext_gic_irq[irq_id-32]);
	246	}
	247	}
	248	}
	249
	250	/*
	251	* Get IRQ number from exynos4210 IRQ subsystem stub.
	252	* To identify IRQ source use internal combiner group and bit number
	253	* grp - group number
	254	* bit - bit number inside group
	255	*/
	256	uint32_t exynos4210_get_irq(uint32_t grp, uint32_t bit)
	257	{
	258	return EXYNOS4210_COMBINER_GET_IRQ_NUM(grp, bit);
	259	}
260
261	/******* GIC part *******/
262
8e03cf1e	263	typedef struct {
23b92f60	264	SysBusDevice busdev;
8e03cf1e EV	265	MemoryRegion cpu_container;
8e03cf1e EV	266	MemoryRegion dist_container;
386e2955 PM	267	MemoryRegion cpu_alias[EXYNOS4210_NCPUS];
386e2955 PM	268	MemoryRegion dist_alias[EXYNOS4210_NCPUS];
8e03cf1e	269	uint32_t num_cpu;
23b92f60	270	DeviceState *gic;
8e03cf1e EV	271	} Exynos4210GicState;
8e03cf1e EV	272
23b92f60 PM	273	static void exynos4210_gic_set_irq(void *opaque, int irq, int level)
	274	{
	275	Exynos4210GicState s = (Exynos4210GicState )opaque;
	276	qemu_set_irq(qdev_get_gpio_in(s->gic, irq), level);
	277	}
	278
8e03cf1e EV	279	static int exynos4210_gic_init(SysBusDevice *dev)
8e03cf1e EV	280	{
23b92f60	281	Exynos4210GicState *s = FROM_SYSBUS(Exynos4210GicState, dev);
8e03cf1e EV	282	uint32_t i;
	283	const char cpu_prefix[] = "exynos4210-gic-alias_cpu";
	284	const char dist_prefix[] = "exynos4210-gic-alias_dist";
	285	char cpu_alias_name[sizeof(cpu_prefix) + 3];
	286	char dist_alias_name[sizeof(cpu_prefix) + 3];
23b92f60 PM	287	SysBusDevice *busdev;
	288
	289	s->gic = qdev_create(NULL, "arm_gic");
	290	qdev_prop_set_uint32(s->gic, "num-cpu", s->num_cpu);
	291	qdev_prop_set_uint32(s->gic, "num-irq", EXYNOS4210_GIC_NIRQ);
	292	qdev_init_nofail(s->gic);
1356b98d	293	busdev = SYS_BUS_DEVICE(s->gic);
23b92f60 PM	294
	295	/* Pass through outbound IRQ lines from the GIC */
	296	sysbus_pass_irq(dev, busdev);
8e03cf1e	297
23b92f60 PM	298	/* Pass through inbound GPIO lines to the GIC */
	299	qdev_init_gpio_in(&s->busdev.qdev, exynos4210_gic_set_irq,
	300	EXYNOS4210_GIC_NIRQ - 32);
8e03cf1e EV	301
	302	memory_region_init(&s->cpu_container, "exynos4210-cpu-container",
	303	EXYNOS4210_EXT_GIC_CPU_REGION_SIZE);
	304	memory_region_init(&s->dist_container, "exynos4210-dist-container",
	305	EXYNOS4210_EXT_GIC_DIST_REGION_SIZE);
	306
	307	for (i = 0; i < s->num_cpu; i++) {
	308	/* Map CPU interface per SMP Core */
	309	sprintf(cpu_alias_name, "%s%x", cpu_prefix, i);
	310	memory_region_init_alias(&s->cpu_alias[i],
	311	cpu_alias_name,
23b92f60	312	sysbus_mmio_get_region(busdev, 1),
8e03cf1e EV	313	0,
	314	EXYNOS4210_GIC_CPU_REGION_SIZE);
	315	memory_region_add_subregion(&s->cpu_container,
	316	EXYNOS4210_EXT_GIC_CPU_GET_OFFSET(i), &s->cpu_alias[i]);
	317
	318	/* Map Distributor per SMP Core */
	319	sprintf(dist_alias_name, "%s%x", dist_prefix, i);
	320	memory_region_init_alias(&s->dist_alias[i],
	321	dist_alias_name,
23b92f60	322	sysbus_mmio_get_region(busdev, 0),
8e03cf1e EV	323	0,
	324	EXYNOS4210_GIC_DIST_REGION_SIZE);
	325	memory_region_add_subregion(&s->dist_container,
	326	EXYNOS4210_EXT_GIC_DIST_GET_OFFSET(i), &s->dist_alias[i]);
	327	}
	328
	329	sysbus_init_mmio(dev, &s->cpu_container);
	330	sysbus_init_mmio(dev, &s->dist_container);
	331
8e03cf1e EV	332	return 0;
	333	}
	334
	335	static Property exynos4210_gic_properties[] = {
	336	DEFINE_PROP_UINT32("num-cpu", Exynos4210GicState, num_cpu, 1),
	337	DEFINE_PROP_END_OF_LIST(),
	338	};
	339
	340	static void exynos4210_gic_class_init(ObjectClass klass, void data)
	341	{
	342	DeviceClass *dc = DEVICE_CLASS(klass);
	343	SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
	344
	345	k->init = exynos4210_gic_init;
	346	dc->props = exynos4210_gic_properties;
	347	}
	348
8c43a6f0	349	static const TypeInfo exynos4210_gic_info = {
8e03cf1e EV	350	.name = "exynos4210.gic",
	351	.parent = TYPE_SYS_BUS_DEVICE,
	352	.instance_size = sizeof(Exynos4210GicState),
	353	.class_init = exynos4210_gic_class_init,
	354	};
	355
	356	static void exynos4210_gic_register_types(void)
	357	{
	358	type_register_static(&exynos4210_gic_info);
	359	}
	360
	361	type_init(exynos4210_gic_register_types)
	362
61558e7a EV	363	/* IRQ OR Gate struct.
	364	*
	365	* This device models an OR gate. There are n_in input qdev gpio lines and one
	366	* output sysbus IRQ line. The output IRQ level is formed as OR between all
	367	* gpio inputs.
8e03cf1e EV	368	*/
	369	typedef struct {
	370	SysBusDevice busdev;
	371
61558e7a EV	372	uint32_t n_in; /* inputs amount */
	373	uint32_t level; / input levels */
	374	qemu_irq out; /* output IRQ */
8e03cf1e EV	375	} Exynos4210IRQGateState;
8e03cf1e EV	376
61558e7a EV	377	static Property exynos4210_irq_gate_properties[] = {
	378	DEFINE_PROP_UINT32("n_in", Exynos4210IRQGateState, n_in, 1),
	379	DEFINE_PROP_END_OF_LIST(),
	380	};
	381
8e03cf1e EV	382	static const VMStateDescription vmstate_exynos4210_irq_gate = {
8e03cf1e EV	383	.name = "exynos4210.irq_gate",
61558e7a EV	384	.version_id = 2,
	385	.minimum_version_id = 2,
	386	.minimum_version_id_old = 2,
8e03cf1e	387	.fields = (VMStateField[]) {
61558e7a	388	VMSTATE_VBUFFER_UINT32(level, Exynos4210IRQGateState, 1, NULL, 0, n_in),
8e03cf1e EV	389	VMSTATE_END_OF_LIST()
	390	}
	391	};
	392
61558e7a	393	/* Process a change in IRQ input. */
8e03cf1e EV	394	static void exynos4210_irq_gate_handler(void *opaque, int irq, int level)
8e03cf1e EV	395	{
61558e7a EV	396	Exynos4210IRQGateState s = (Exynos4210IRQGateState )opaque;
61558e7a EV	397	uint32_t i;
8e03cf1e	398
61558e7a	399	assert(irq < s->n_in);
8e03cf1e	400
61558e7a EV	401	s->level[irq] = level;
	402
	403	for (i = 0; i < s->n_in; i++) {
	404	if (s->level[i] >= 1) {
	405	qemu_irq_raise(s->out);
	406	return;
	407	}
8e03cf1e EV	408	}
8e03cf1e EV	409
61558e7a	410	qemu_irq_lower(s->out);
8e03cf1e EV	411	}
	412
	413	static void exynos4210_irq_gate_reset(DeviceState *d)
	414	{
61558e7a EV	415	Exynos4210IRQGateState *s =
61558e7a EV	416	DO_UPCAST(Exynos4210IRQGateState, busdev.qdev, d);
8e03cf1e	417
61558e7a	418	memset(s->level, 0, s->n_in * sizeof(*s->level));
8e03cf1e EV	419	}
	420
	421	/*
	422	* IRQ Gate initialization.
	423	*/
	424	static int exynos4210_irq_gate_init(SysBusDevice *dev)
	425	{
61558e7a	426	Exynos4210IRQGateState *s = FROM_SYSBUS(Exynos4210IRQGateState, dev);
8e03cf1e EV	427
	428	/* Allocate general purpose input signals and connect a handler to each of
	429	* them */
61558e7a	430	qdev_init_gpio_in(&s->busdev.qdev, exynos4210_irq_gate_handler, s->n_in);
8e03cf1e	431
61558e7a EV	432	s->level = g_malloc0(s->n_in * sizeof(*s->level));
	433
	434	sysbus_init_irq(dev, &s->out);
8e03cf1e EV	435
	436	return 0;
	437	}
	438
	439	static void exynos4210_irq_gate_class_init(ObjectClass klass, void data)
	440	{
	441	DeviceClass *dc = DEVICE_CLASS(klass);
	442	SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
	443
	444	k->init = exynos4210_irq_gate_init;
	445	dc->reset = exynos4210_irq_gate_reset;
	446	dc->vmsd = &vmstate_exynos4210_irq_gate;
61558e7a	447	dc->props = exynos4210_irq_gate_properties;
8e03cf1e EV	448	}
8e03cf1e EV	449
8c43a6f0	450	static const TypeInfo exynos4210_irq_gate_info = {
8e03cf1e EV	451	.name = "exynos4210.irq_gate",
	452	.parent = TYPE_SYS_BUS_DEVICE,
	453	.instance_size = sizeof(Exynos4210IRQGateState),
	454	.class_init = exynos4210_irq_gate_class_init,
	455	};
	456
	457	static void exynos4210_irq_gate_register_types(void)
	458	{
	459	type_register_static(&exynos4210_irq_gate_info);
	460	}
	461
	462	type_init(exynos4210_irq_gate_register_types)