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ARM: exynos4210: IRQ subsystem support. 

Signed-off-by: Evgeny Voevodin <e.voevodin@samsung.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Evgeny Voevodin 2012-02-16 09:56:04 +00:00 committed by Peter Maydell
parent 9de36b1a7c
commit 8e03cf1eeb
4 changed files with 1010 additions and 0 deletions
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1
Makefile.target
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@ -344,6 +344,7 @@ obj-arm-y = integratorcp.o versatilepb.o arm_pic.o arm_timer.o
obj-arm-y += arm_boot.o pl011.o pl031.o pl050.o pl080.o pl110.o pl181.o pl190.o
obj-arm-y += versatile_pci.o
obj-arm-y += realview_gic.o realview.o arm_sysctl.o arm11mpcore.o a9mpcore.o
obj-arm-y += exynos4210_gic.o exynos4210_combiner.o
obj-arm-y += arm_l2x0.o
obj-arm-y += arm_mptimer.o
obj-arm-y += armv7m.o armv7m_nvic.o stellaris.o pl022.o stellaris_enet.o

82
hw/exynos4210.h Normal file
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@ -0,0 +1,82 @@
/*
* Samsung exynos4210 SoC emulation
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd. All rights reserved.
* Maksim Kozlov <m.kozlov@samsung.com>
* Evgeny Voevodin <e.voevodin@samsung.com>
* Igor Mitsyanko <i.mitsyanko@samsung.com>
*
*
* 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/>.
*
*/
#ifndef EXYNOS4210_H_
#define EXYNOS4210_H_
#include "qemu-common.h"
#include "memory.h"
#define EXYNOS4210_NCPUS 2
/*
* exynos4210 IRQ subsystem stub definitions.
*/
#define EXYNOS4210_IRQ_GATE_NINPUTS 8
#define EXYNOS4210_MAX_INT_COMBINER_OUT_IRQ 64
#define EXYNOS4210_MAX_EXT_COMBINER_OUT_IRQ 16
#define EXYNOS4210_MAX_INT_COMBINER_IN_IRQ \
(EXYNOS4210_MAX_INT_COMBINER_OUT_IRQ * 8)
#define EXYNOS4210_MAX_EXT_COMBINER_IN_IRQ \
(EXYNOS4210_MAX_EXT_COMBINER_OUT_IRQ * 8)
#define EXYNOS4210_COMBINER_GET_IRQ_NUM(grp, bit) ((grp)*8 + (bit))
#define EXYNOS4210_COMBINER_GET_GRP_NUM(irq) ((irq) / 8)
#define EXYNOS4210_COMBINER_GET_BIT_NUM(irq) \
((irq) - 8 * EXYNOS4210_COMBINER_GET_GRP_NUM(irq))
/* IRQs number for external and internal GIC */
#define EXYNOS4210_EXT_GIC_NIRQ (160-32)
#define EXYNOS4210_INT_GIC_NIRQ 64
typedef struct Exynos4210Irq {
qemu_irq int_combiner_irq[EXYNOS4210_MAX_INT_COMBINER_IN_IRQ];
qemu_irq ext_combiner_irq[EXYNOS4210_MAX_EXT_COMBINER_IN_IRQ];
qemu_irq int_gic_irq[EXYNOS4210_INT_GIC_NIRQ];
qemu_irq ext_gic_irq[EXYNOS4210_EXT_GIC_NIRQ];
qemu_irq board_irqs[EXYNOS4210_MAX_INT_COMBINER_IN_IRQ];
} Exynos4210Irq;
/* Initialize exynos4210 IRQ subsystem stub */
qemu_irq *exynos4210_init_irq(Exynos4210Irq *env);
/* Initialize board IRQs.
* These IRQs contain splitted Int/External Combiner and External Gic IRQs */
void exynos4210_init_board_irqs(Exynos4210Irq *s);
/* 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);
/*
* Get Combiner input GPIO into irqs structure
*/
void exynos4210_combiner_get_gpioin(Exynos4210Irq *irqs, DeviceState *dev,
int ext);
#endif /* EXYNOS4210_H_ */

469
hw/exynos4210_combiner.c Normal file
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@ -0,0 +1,469 @@
/*
* Samsung exynos4210 Interrupt Combiner
*
* Copyright (c) 2000 - 2011 Samsung Electronics Co., Ltd.
* All rights reserved.
*
* Evgeny Voevodin <e.voevodin@samsung.com>
*
* 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/>.
*/
/*
* Exynos4210 Combiner represents an OR gate for SOC's IRQ lines. It combines
* IRQ sources into groups and provides signal output to GIC from each group. It
* is driven by common mask and enable/disable logic. Take a note that not all
* IRQs are passed to GIC through Combiner.
*/
#include "sysbus.h"
#include "exynos4210.h"
//#define DEBUG_COMBINER
#ifdef DEBUG_COMBINER
#define DPRINTF(fmt, ...) \
do { fprintf(stdout, "COMBINER: [%s:%d] " fmt, __func__ , __LINE__, \
## __VA_ARGS__); } while (0)
#else
#define DPRINTF(fmt, ...) do {} while (0)
#endif
#define IIC_NGRP 64 /* Internal Interrupt Combiner
Groups number */
#define IIC_NIRQ (IIC_NGRP * 8)/* Internal Interrupt Combiner
Interrupts number */
#define IIC_REGION_SIZE 0x108 /* Size of memory mapped region */
#define IIC_REGSET_SIZE 0x41
/*
* State for each output signal of internal combiner
*/
typedef struct CombinerGroupState {
uint8_t src_mask; /* 1 - source enabled, 0 - disabled */
uint8_t src_pending; /* Pending source interrupts before masking */
} CombinerGroupState;
typedef struct Exynos4210CombinerState {
SysBusDevice busdev;
MemoryRegion iomem;
struct CombinerGroupState group[IIC_NGRP];
uint32_t reg_set[IIC_REGSET_SIZE];
uint32_t icipsr[2];
uint32_t external; /* 1 means that this combiner is external */
qemu_irq output_irq[IIC_NGRP];
} Exynos4210CombinerState;
static const VMStateDescription vmstate_exynos4210_combiner_group_state = {
.name = "exynos4210.combiner.groupstate",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT8(src_mask, CombinerGroupState),
VMSTATE_UINT8(src_pending, CombinerGroupState),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_exynos4210_combiner = {
.name = "exynos4210.combiner",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField[]) {
VMSTATE_STRUCT_ARRAY(group, Exynos4210CombinerState, IIC_NGRP, 0,
vmstate_exynos4210_combiner_group_state, CombinerGroupState),
VMSTATE_UINT32_ARRAY(reg_set, Exynos4210CombinerState,
IIC_REGSET_SIZE),
VMSTATE_UINT32_ARRAY(icipsr, Exynos4210CombinerState, 2),
VMSTATE_UINT32(external, Exynos4210CombinerState),
VMSTATE_END_OF_LIST()
}
};
/*
* Get Combiner input GPIO into irqs structure
*/
void exynos4210_combiner_get_gpioin(Exynos4210Irq *irqs, DeviceState *dev,
int ext)
{
int n;
int bit;
int max;
qemu_irq *irq;
max = ext ? EXYNOS4210_MAX_EXT_COMBINER_IN_IRQ :
EXYNOS4210_MAX_INT_COMBINER_IN_IRQ;
irq = ext ? irqs->ext_combiner_irq : irqs->int_combiner_irq;
/*
* Some IRQs of Int/External Combiner are going to two Combiners groups,
* so let split them.
*/
for (n = 0; n < max; n++) {
bit = EXYNOS4210_COMBINER_GET_BIT_NUM(n);
switch (n) {
/* MDNIE_LCD1 INTG1 */
case EXYNOS4210_COMBINER_GET_IRQ_NUM(1, 0) ...
EXYNOS4210_COMBINER_GET_IRQ_NUM(1, 3):
irq[n] = qemu_irq_split(qdev_get_gpio_in(dev, n),
irq[EXYNOS4210_COMBINER_GET_IRQ_NUM(0, bit + 4)]);
continue;
/* TMU INTG3 */
case EXYNOS4210_COMBINER_GET_IRQ_NUM(3, 4):
irq[n] = qemu_irq_split(qdev_get_gpio_in(dev, n),
irq[EXYNOS4210_COMBINER_GET_IRQ_NUM(2, bit)]);
continue;
/* LCD1 INTG12 */
case EXYNOS4210_COMBINER_GET_IRQ_NUM(12, 0) ...
EXYNOS4210_COMBINER_GET_IRQ_NUM(12, 3):
irq[n] = qemu_irq_split(qdev_get_gpio_in(dev, n),
irq[EXYNOS4210_COMBINER_GET_IRQ_NUM(11, bit + 4)]);
continue;
/* Multi-Core Timer INTG12 */
case EXYNOS4210_COMBINER_GET_IRQ_NUM(12, 4) ...
EXYNOS4210_COMBINER_GET_IRQ_NUM(12, 8):
irq[n] = qemu_irq_split(qdev_get_gpio_in(dev, n),
irq[EXYNOS4210_COMBINER_GET_IRQ_NUM(1, bit + 4)]);
continue;
/* Multi-Core Timer INTG35 */
case EXYNOS4210_COMBINER_GET_IRQ_NUM(35, 4) ...
EXYNOS4210_COMBINER_GET_IRQ_NUM(35, 8):
irq[n] = qemu_irq_split(qdev_get_gpio_in(dev, n),
irq[EXYNOS4210_COMBINER_GET_IRQ_NUM(1, bit + 4)]);
continue;
/* Multi-Core Timer INTG51 */
case EXYNOS4210_COMBINER_GET_IRQ_NUM(51, 4) ...
EXYNOS4210_COMBINER_GET_IRQ_NUM(51, 8):
irq[n] = qemu_irq_split(qdev_get_gpio_in(dev, n),
irq[EXYNOS4210_COMBINER_GET_IRQ_NUM(1, bit + 4)]);
continue;
/* Multi-Core Timer INTG53 */
case EXYNOS4210_COMBINER_GET_IRQ_NUM(53, 4) ...
EXYNOS4210_COMBINER_GET_IRQ_NUM(53, 8):
irq[n] = qemu_irq_split(qdev_get_gpio_in(dev, n),
irq[EXYNOS4210_COMBINER_GET_IRQ_NUM(1, bit + 4)]);
continue;
}
irq[n] = qdev_get_gpio_in(dev, n);
}
}
static uint64_t
exynos4210_combiner_read(void *opaque, target_phys_addr_t offset, unsigned size)
{
struct Exynos4210CombinerState *s =
(struct Exynos4210CombinerState *)opaque;
uint32_t req_quad_base_n; /* Base of registers quad. Multiply it by 4 and
get a start of corresponding group quad */
uint32_t grp_quad_base_n; /* Base of group quad */
uint32_t reg_n; /* Register number inside the quad */
uint32_t val;
if (s->external && (offset > 0x3c && offset != 0x100)) {
hw_error("exynos4210.combiner: unallowed read access at offset 0x"
TARGET_FMT_plx "\n", offset);
}
req_quad_base_n = offset >> 4;
grp_quad_base_n = req_quad_base_n << 2;
reg_n = (offset - (req_quad_base_n << 4)) >> 2;
if (req_quad_base_n >= IIC_NGRP) {
/* Read of ICIPSR register */
return s->icipsr[reg_n];
}
val = 0;
switch (reg_n) {
/* IISTR */
case 2:
val |= s->group[grp_quad_base_n].src_pending;
val |= s->group[grp_quad_base_n + 1].src_pending << 8;
val |= s->group[grp_quad_base_n + 2].src_pending << 16;
val |= s->group[grp_quad_base_n + 3].src_pending << 24;
break;
/* IIMSR */
case 3:
val |= s->group[grp_quad_base_n].src_mask &
s->group[grp_quad_base_n].src_pending;
val |= (s->group[grp_quad_base_n + 1].src_mask &
s->group[grp_quad_base_n + 1].src_pending) << 8;
val |= (s->group[grp_quad_base_n + 2].src_mask &
s->group[grp_quad_base_n + 2].src_pending) << 16;
val |= (s->group[grp_quad_base_n + 3].src_mask &
s->group[grp_quad_base_n + 3].src_pending) << 24;
break;
default:
if (offset >> 2 >= IIC_REGSET_SIZE) {
hw_error("exynos4210.combiner: overflow of reg_set by 0x"
TARGET_FMT_plx "offset\n", offset);
}
val = s->reg_set[offset >> 2];
return 0;
}
return val;
}
static void exynos4210_combiner_update(void *opaque, uint8_t group_n)
{
struct Exynos4210CombinerState *s =
(struct Exynos4210CombinerState *)opaque;
/* Send interrupt if needed */
if (s->group[group_n].src_mask & s->group[group_n].src_pending) {
#ifdef DEBUG_COMBINER
if (group_n != 26) {
/* skip uart */
DPRINTF("%s raise IRQ[%d]\n", s->external ? "EXT" : "INT", group_n);
}
#endif
/* Set Combiner interrupt pending status after masking */
if (group_n >= 32) {
s->icipsr[1] |= 1 << (group_n - 32);
} else {
s->icipsr[0] |= 1 << group_n;
}
qemu_irq_raise(s->output_irq[group_n]);
} else {
#ifdef DEBUG_COMBINER
if (group_n != 26) {
/* skip uart */
DPRINTF("%s lower IRQ[%d]\n", s->external ? "EXT" : "INT", group_n);
}
#endif
/* Set Combiner interrupt pending status after masking */
if (group_n >= 32) {
s->icipsr[1] &= ~(1 << (group_n - 32));
} else {
s->icipsr[0] &= ~(1 << group_n);
}
qemu_irq_lower(s->output_irq[group_n]);
}
}
static void exynos4210_combiner_write(void *opaque, target_phys_addr_t offset,
uint64_t val, unsigned size)
{
struct Exynos4210CombinerState *s =
(struct Exynos4210CombinerState *)opaque;
uint32_t req_quad_base_n; /* Base of registers quad. Multiply it by 4 and
get a start of corresponding group quad */
uint32_t grp_quad_base_n; /* Base of group quad */
uint32_t reg_n; /* Register number inside the quad */
if (s->external && (offset > 0x3c && offset != 0x100)) {
hw_error("exynos4210.combiner: unallowed write access at offset 0x"
TARGET_FMT_plx "\n", offset);
}
req_quad_base_n = offset >> 4;
grp_quad_base_n = req_quad_base_n << 2;
reg_n = (offset - (req_quad_base_n << 4)) >> 2;
if (req_quad_base_n >= IIC_NGRP) {
hw_error("exynos4210.combiner: unallowed write access at offset 0x"
TARGET_FMT_plx "\n", offset);
return;
}
if (reg_n > 1) {
hw_error("exynos4210.combiner: unallowed write access at offset 0x"
TARGET_FMT_plx "\n", offset);
return;
}
if (offset >> 2 >= IIC_REGSET_SIZE) {
hw_error("exynos4210.combiner: overflow of reg_set by 0x"
TARGET_FMT_plx "offset\n", offset);
}
s->reg_set[offset >> 2] = val;
switch (reg_n) {
/* IIESR */
case 0:
/* FIXME: what if irq is pending, allowed by mask, and we allow it
* again. Interrupt will rise again! */
DPRINTF("%s enable IRQ for groups %d, %d, %d, %d\n",
s->external ? "EXT" : "INT",
grp_quad_base_n,
grp_quad_base_n + 1,
grp_quad_base_n + 2,
grp_quad_base_n + 3);
/* Enable interrupt sources */
s->group[grp_quad_base_n].src_mask |= val & 0xFF;
s->group[grp_quad_base_n + 1].src_mask |= (val & 0xFF00) >> 8;
s->group[grp_quad_base_n + 2].src_mask |= (val & 0xFF0000) >> 16;
s->group[grp_quad_base_n + 3].src_mask |= (val & 0xFF000000) >> 24;
exynos4210_combiner_update(s, grp_quad_base_n);
exynos4210_combiner_update(s, grp_quad_base_n + 1);
exynos4210_combiner_update(s, grp_quad_base_n + 2);
exynos4210_combiner_update(s, grp_quad_base_n + 3);
break;
/* IIECR */
case 1:
DPRINTF("%s disable IRQ for groups %d, %d, %d, %d\n",
s->external ? "EXT" : "INT",
grp_quad_base_n,
grp_quad_base_n + 1,
grp_quad_base_n + 2,
grp_quad_base_n + 3);
/* Disable interrupt sources */
s->group[grp_quad_base_n].src_mask &= ~(val & 0xFF);
s->group[grp_quad_base_n + 1].src_mask &= ~((val & 0xFF00) >> 8);
s->group[grp_quad_base_n + 2].src_mask &= ~((val & 0xFF0000) >> 16);
s->group[grp_quad_base_n + 3].src_mask &= ~((val & 0xFF000000) >> 24);
exynos4210_combiner_update(s, grp_quad_base_n);
exynos4210_combiner_update(s, grp_quad_base_n + 1);
exynos4210_combiner_update(s, grp_quad_base_n + 2);
exynos4210_combiner_update(s, grp_quad_base_n + 3);
break;
default:
hw_error("exynos4210.combiner: unallowed write access at offset 0x"
TARGET_FMT_plx "\n", offset);
break;
}
return;
}
/* Get combiner group and bit from irq number */
static uint8_t get_combiner_group_and_bit(int irq, uint8_t *bit)
{
*bit = irq - ((irq >> 3) << 3);
return irq >> 3;
}
/* Process a change in an external IRQ input. */
static void exynos4210_combiner_handler(void *opaque, int irq, int level)
{
struct Exynos4210CombinerState *s =
(struct Exynos4210CombinerState *)opaque;
uint8_t bit_n, group_n;
group_n = get_combiner_group_and_bit(irq, &bit_n);
if (s->external && group_n >= EXYNOS4210_MAX_EXT_COMBINER_OUT_IRQ) {
DPRINTF("%s unallowed IRQ group 0x%x\n", s->external ? "EXT" : "INT"
, group_n);
return;
}
if (level) {
s->group[group_n].src_pending |= 1 << bit_n;
} else {
s->group[group_n].src_pending &= ~(1 << bit_n);
}
exynos4210_combiner_update(s, group_n);
return;
}
static void exynos4210_combiner_reset(DeviceState *d)
{
struct Exynos4210CombinerState *s = (struct Exynos4210CombinerState *)d;
memset(&s->group, 0, sizeof(s->group));
memset(&s->reg_set, 0, sizeof(s->reg_set));
s->reg_set[0xC0 >> 2] = 0x01010101;
s->reg_set[0xC4 >> 2] = 0x01010101;
s->reg_set[0xD0 >> 2] = 0x01010101;
s->reg_set[0xD4 >> 2] = 0x01010101;
}
static const MemoryRegionOps exynos4210_combiner_ops = {
.read = exynos4210_combiner_read,
.write = exynos4210_combiner_write,
.endianness = DEVICE_NATIVE_ENDIAN,
};
/*
* Internal Combiner initialization.
*/
static int exynos4210_combiner_init(SysBusDevice *dev)
{
unsigned int i;
struct Exynos4210CombinerState *s =
FROM_SYSBUS(struct Exynos4210CombinerState, dev);
/* Allocate general purpose input signals and connect a handler to each of
* them */
qdev_init_gpio_in(&s->busdev.qdev, exynos4210_combiner_handler, IIC_NIRQ);
/* Connect SysBusDev irqs to device specific irqs */
for (i = 0; i < IIC_NIRQ; i++) {
sysbus_init_irq(dev, &s->output_irq[i]);
}
memory_region_init_io(&s->iomem, &exynos4210_combiner_ops, s,
"exynos4210-combiner", IIC_REGION_SIZE);
sysbus_init_mmio(dev, &s->iomem);
return 0;
}
static Property exynos4210_combiner_properties[] = {
DEFINE_PROP_UINT32("external", Exynos4210CombinerState, external, 0),
DEFINE_PROP_END_OF_LIST(),
};
static void exynos4210_combiner_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
k->init = exynos4210_combiner_init;
dc->reset = exynos4210_combiner_reset;
dc->props = exynos4210_combiner_properties;
dc->vmsd = &vmstate_exynos4210_combiner;
}
static TypeInfo exynos4210_combiner_info = {
.name = "exynos4210.combiner",
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(Exynos4210CombinerState),
.class_init = exynos4210_combiner_class_init,
};
static void exynos4210_combiner_register_types(void)
{
type_register_static(&exynos4210_combiner_info);
}
type_init(exynos4210_combiner_register_types)

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hw/exynos4210_gic.c Normal file
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@ -0,0 +1,458 @@
/*
* Samsung exynos4210 GIC implementation. Based on hw/arm_gic.c
*
* Copyright (c) 2000 - 2011 Samsung Electronics Co., Ltd.
* All rights reserved.
*
* Evgeny Voevodin <e.voevodin@samsung.com>
*
* 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 "sysbus.h"
#include "qemu-common.h"
#include "irq.h"
#include "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 },
/* 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 NCPU EXYNOS4210_NCPUS
#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);
return;
}
/*
* 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 *********/
static inline int
gic_get_current_cpu(void)
{
return cpu_single_env->cpu_index;
}
#include "arm_gic.c"
typedef struct {
gic_state gic;
MemoryRegion cpu_container;
MemoryRegion dist_container;
MemoryRegion cpu_alias[NCPU];
MemoryRegion dist_alias[NCPU];
uint32_t num_cpu;
} Exynos4210GicState;
static int exynos4210_gic_init(SysBusDevice *dev)
{
Exynos4210GicState *s = FROM_SYSBUSGIC(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];
gic_init(&s->gic, s->num_cpu, EXYNOS4210_GIC_NIRQ);
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,
&s->gic.cpuiomem[0],
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,
&s->gic.iomem,
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);
gic_cpu_write(&s->gic, 1, 0, 1);
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 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)
/*
* IRQGate struct.
* IRQ Gate represents OR gate between GICs to pass IRQ to PIC.
*/
typedef struct {
SysBusDevice busdev;
qemu_irq pic_irq[NCPU]; /* output IRQs to PICs */
uint32_t gpio_level[EXYNOS4210_IRQ_GATE_NINPUTS]; /* Input levels */
} Exynos4210IRQGateState;
static const VMStateDescription vmstate_exynos4210_irq_gate = {
.name = "exynos4210.irq_gate",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32_ARRAY(gpio_level, Exynos4210IRQGateState,
EXYNOS4210_IRQ_GATE_NINPUTS),
VMSTATE_END_OF_LIST()
}
};
/* Process a change in an external IRQ input. */
static void exynos4210_irq_gate_handler(void *opaque, int irq, int level)
{
Exynos4210IRQGateState *s =
(Exynos4210IRQGateState *)opaque;
uint32_t odd, even;
if (irq & 1) {
odd = irq;
even = irq & ~1;
} else {
even = irq;
odd = irq | 1;
}
assert(irq < EXYNOS4210_IRQ_GATE_NINPUTS);
s->gpio_level[irq] = level;
if (s->gpio_level[odd] >= 1 || s->gpio_level[even] >= 1) {
qemu_irq_raise(s->pic_irq[even >> 1]);
} else {
qemu_irq_lower(s->pic_irq[even >> 1]);
}
return;
}
static void exynos4210_irq_gate_reset(DeviceState *d)
{
Exynos4210IRQGateState *s = (Exynos4210IRQGateState *)d;
memset(&s->gpio_level, 0, sizeof(s->gpio_level));
}
/*
* IRQ Gate initialization.
*/
static int exynos4210_irq_gate_init(SysBusDevice *dev)
{
unsigned int i;
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,
EXYNOS4210_IRQ_GATE_NINPUTS);
/* Connect SysBusDev irqs to device specific irqs */
for (i = 0; i < NCPU; i++) {
sysbus_init_irq(dev, &s->pic_irq[i]);
}
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;
}
static 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)