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qemu/hw/rx/rx62n.c
Philippe Mathieu-Daudé 2e0b925a34 hw/rx/rx62n: Only call qdev_get_gpio_in() when necessary 
Instead of filling an array of all the possible IRQs, only call
qdev_get_gpio_in() when an IRQ is used. Remove the array from
RX62NState. Doing so we avoid calling qdev_get_gpio_in() on an
unrealized device.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240213130341.1793-4-philmd@linaro.org>
2024-02-15 16:58:46 +01:00

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/*
* RX62N Microcontroller
*
* Datasheet: RX62N Group, RX621 Group User's Manual: Hardware
* (Rev.1.40 R01UH0033EJ0140)
*
* Copyright (c) 2019 Yoshinori Sato
* Copyright (c) 2020 Philippe Mathieu-Daudé
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2 or later, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 "qapi/error.h"
#include "qemu/error-report.h"
#include "qemu/units.h"
#include "hw/rx/rx62n.h"
#include "hw/loader.h"
#include "hw/sysbus.h"
#include "hw/qdev-properties.h"
#include "sysemu/sysemu.h"
#include "qapi/qmp/qlist.h"
#include "qom/object.h"
/*
* RX62N Internal Memory
*/
#define RX62N_IRAM_BASE 0x00000000
#define RX62N_DFLASH_BASE 0x00100000
#define RX62N_CFLASH_BASE 0xfff80000
/*
* RX62N Peripheral Address
* See users manual section 5
*/
#define RX62N_ICU_BASE 0x00087000
#define RX62N_TMR_BASE 0x00088200
#define RX62N_CMT_BASE 0x00088000
#define RX62N_SCI_BASE 0x00088240
/*
* RX62N Peripheral IRQ
* See users manual section 11
*/
#define RX62N_TMR_IRQ 174
#define RX62N_CMT_IRQ 28
#define RX62N_SCI_IRQ 214
#define RX62N_XTAL_MIN_HZ (8 * 1000 * 1000)
#define RX62N_XTAL_MAX_HZ (14 * 1000 * 1000)
#define RX62N_PCLK_MAX_HZ (50 * 1000 * 1000)
struct RX62NClass {
/*< private >*/
DeviceClass parent_class;
/*< public >*/
const char *name;
uint64_t ram_size;
uint64_t rom_flash_size;
uint64_t data_flash_size;
};
typedef struct RX62NClass RX62NClass;
DECLARE_CLASS_CHECKERS(RX62NClass, RX62N_MCU,
TYPE_RX62N_MCU)
/*
* IRQ -> IPR mapping table
* 0x00 - 0x91: IPR no (IPR00 to IPR91)
* 0xff: IPR not assigned
* See "11.3.1 Interrupt Vector Table" in hardware manual.
*/
static const uint8_t ipr_table[NR_IRQS] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 15 */
0x00, 0xff, 0xff, 0xff, 0xff, 0x01, 0xff, 0x02,
0xff, 0xff, 0xff, 0x03, 0x04, 0x05, 0x06, 0x07, /* 31 */
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x14, 0x14, 0x14, /* 47 */
0x15, 0x15, 0x15, 0x15, 0xff, 0xff, 0xff, 0xff,
0x18, 0x18, 0x18, 0x18, 0x18, 0x1d, 0x1e, 0x1f, /* 63 */
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 79 */
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0x3a, 0x3b, 0x3c, 0xff, 0xff, 0xff, /* 95 */
0x40, 0xff, 0x44, 0x45, 0xff, 0xff, 0x48, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 111 */
0xff, 0xff, 0x51, 0x51, 0x51, 0x51, 0x52, 0x52,
0x52, 0x53, 0x53, 0x54, 0x54, 0x55, 0x55, 0x56, /* 127 */
0x56, 0x57, 0x57, 0x57, 0x57, 0x58, 0x59, 0x59,
0x59, 0x59, 0x5a, 0x5b, 0x5b, 0x5b, 0x5c, 0x5c, /* 143 */
0x5c, 0x5c, 0x5d, 0x5d, 0x5d, 0x5e, 0x5e, 0x5f,
0x5f, 0x60, 0x60, 0x61, 0x61, 0x62, 0x62, 0x62, /* 159 */
0x62, 0x63, 0x64, 0x64, 0x64, 0x64, 0x65, 0x66,
0x66, 0x66, 0x67, 0x67, 0x67, 0x67, 0x68, 0x68, /* 175 */
0x68, 0x69, 0x69, 0x69, 0x6a, 0x6a, 0x6a, 0x6b,
0x6b, 0x6b, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 191 */
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x70, 0x71,
0x72, 0x73, 0x74, 0x75, 0xff, 0xff, 0xff, 0xff, /* 207 */
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x80,
0x80, 0x80, 0x81, 0x81, 0x81, 0x81, 0x82, 0x82, /* 223 */
0x82, 0x82, 0x83, 0x83, 0x83, 0x83, 0xff, 0xff,
0xff, 0xff, 0x85, 0x85, 0x85, 0x85, 0x86, 0x86, /* 239 */
0x86, 0x86, 0xff, 0xff, 0xff, 0xff, 0x88, 0x89,
0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, /* 255 */
};
/*
* Level triggered IRQ list
* Not listed IRQ is Edge trigger.
* See "11.3.1 Interrupt Vector Table" in hardware manual.
*/
static const uint8_t levelirq[] = {
16, 21, 32, 44, 47, 48, 51, 64, 65, 66,
67, 68, 69, 70, 71, 72, 73, 74, 75, 76,
77, 78, 79, 90, 91, 170, 171, 172, 173, 214,
217, 218, 221, 222, 225, 226, 229, 234, 237, 238,
241, 246, 249, 250, 253,
};
static void register_icu(RX62NState *s)
{
int i;
SysBusDevice *icu;
QList *ipr_map, *trigger_level;
object_initialize_child(OBJECT(s), "icu", &s->icu, TYPE_RX_ICU);
icu = SYS_BUS_DEVICE(&s->icu);
ipr_map = qlist_new();
for (i = 0; i < NR_IRQS; i++) {
qlist_append_int(ipr_map, ipr_table[i]);
}
qdev_prop_set_array(DEVICE(icu), "ipr-map", ipr_map);
trigger_level = qlist_new();
for (i = 0; i < ARRAY_SIZE(levelirq); i++) {
qlist_append_int(trigger_level, levelirq[i]);
}
qdev_prop_set_array(DEVICE(icu), "trigger-level", trigger_level);
sysbus_realize(icu, &error_abort);
sysbus_connect_irq(icu, 0, qdev_get_gpio_in(DEVICE(&s->cpu), RX_CPU_IRQ));
sysbus_connect_irq(icu, 1, qdev_get_gpio_in(DEVICE(&s->cpu), RX_CPU_FIR));
sysbus_connect_irq(icu, 2, qdev_get_gpio_in(DEVICE(&s->icu), SWI));
sysbus_mmio_map(icu, 0, RX62N_ICU_BASE);
}
static void register_tmr(RX62NState *s, int unit)
{
SysBusDevice *tmr;
int i, irqbase;
object_initialize_child(OBJECT(s), "tmr[*]",
&s->tmr[unit], TYPE_RENESAS_TMR);
tmr = SYS_BUS_DEVICE(&s->tmr[unit]);
qdev_prop_set_uint64(DEVICE(tmr), "input-freq", s->pclk_freq_hz);
sysbus_realize(tmr, &error_abort);
irqbase = RX62N_TMR_IRQ + TMR_NR_IRQ * unit;
for (i = 0; i < TMR_NR_IRQ; i++) {
sysbus_connect_irq(tmr, i,
qdev_get_gpio_in(DEVICE(&s->icu), irqbase + i));
}
sysbus_mmio_map(tmr, 0, RX62N_TMR_BASE + unit * 0x10);
}
static void register_cmt(RX62NState *s, int unit)
{
SysBusDevice *cmt;
int i, irqbase;
object_initialize_child(OBJECT(s), "cmt[*]",
&s->cmt[unit], TYPE_RENESAS_CMT);
cmt = SYS_BUS_DEVICE(&s->cmt[unit]);
qdev_prop_set_uint64(DEVICE(cmt), "input-freq", s->pclk_freq_hz);
sysbus_realize(cmt, &error_abort);
irqbase = RX62N_CMT_IRQ + CMT_NR_IRQ * unit;
for (i = 0; i < CMT_NR_IRQ; i++) {
sysbus_connect_irq(cmt, i,
qdev_get_gpio_in(DEVICE(&s->icu), irqbase + i));
}
sysbus_mmio_map(cmt, 0, RX62N_CMT_BASE + unit * 0x10);
}
static void register_sci(RX62NState *s, int unit)
{
SysBusDevice *sci;
int i, irqbase;
object_initialize_child(OBJECT(s), "sci[*]",
&s->sci[unit], TYPE_RENESAS_SCI);
sci = SYS_BUS_DEVICE(&s->sci[unit]);
qdev_prop_set_chr(DEVICE(sci), "chardev", serial_hd(unit));
qdev_prop_set_uint64(DEVICE(sci), "input-freq", s->pclk_freq_hz);
sysbus_realize(sci, &error_abort);
irqbase = RX62N_SCI_IRQ + SCI_NR_IRQ * unit;
for (i = 0; i < SCI_NR_IRQ; i++) {
sysbus_connect_irq(sci, i,
qdev_get_gpio_in(DEVICE(&s->icu), irqbase + i));
}
sysbus_mmio_map(sci, 0, RX62N_SCI_BASE + unit * 0x08);
}
static void rx62n_realize(DeviceState *dev, Error **errp)
{
RX62NState *s = RX62N_MCU(dev);
RX62NClass *rxc = RX62N_MCU_GET_CLASS(dev);
if (s->xtal_freq_hz == 0) {
error_setg(errp, "\"xtal-frequency-hz\" property must be provided.");
return;
}
/* XTAL range: 8-14 MHz */
if (s->xtal_freq_hz < RX62N_XTAL_MIN_HZ
|| s->xtal_freq_hz > RX62N_XTAL_MAX_HZ) {
error_setg(errp, "\"xtal-frequency-hz\" property in incorrect range.");
return;
}
/* Use a 4x fixed multiplier */
s->pclk_freq_hz = 4 * s->xtal_freq_hz;
/* PCLK range: 8-50 MHz */
assert(s->pclk_freq_hz <= RX62N_PCLK_MAX_HZ);
memory_region_init_ram(&s->iram, OBJECT(dev), "iram",
rxc->ram_size, &error_abort);
memory_region_add_subregion(s->sysmem, RX62N_IRAM_BASE, &s->iram);
memory_region_init_rom(&s->d_flash, OBJECT(dev), "flash-data",
rxc->data_flash_size, &error_abort);
memory_region_add_subregion(s->sysmem, RX62N_DFLASH_BASE, &s->d_flash);
memory_region_init_rom(&s->c_flash, OBJECT(dev), "flash-code",
rxc->rom_flash_size, &error_abort);
memory_region_add_subregion(s->sysmem, RX62N_CFLASH_BASE, &s->c_flash);
/* Initialize CPU */
object_initialize_child(OBJECT(s), "cpu", &s->cpu, TYPE_RX62N_CPU);
qdev_realize(DEVICE(&s->cpu), NULL, &error_abort);
register_icu(s);
s->cpu.env.ack = qdev_get_gpio_in_named(DEVICE(&s->icu), "ack", 0);
register_tmr(s, 0);
register_tmr(s, 1);
register_cmt(s, 0);
register_cmt(s, 1);
register_sci(s, 0);
}
static Property rx62n_properties[] = {
DEFINE_PROP_LINK("main-bus", RX62NState, sysmem, TYPE_MEMORY_REGION,
MemoryRegion *),
DEFINE_PROP_BOOL("load-kernel", RX62NState, kernel, false),
DEFINE_PROP_UINT32("xtal-frequency-hz", RX62NState, xtal_freq_hz, 0),
DEFINE_PROP_END_OF_LIST(),
};
static void rx62n_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = rx62n_realize;
device_class_set_props(dc, rx62n_properties);
}
static void r5f562n7_class_init(ObjectClass *oc, void *data)
{
RX62NClass *rxc = RX62N_MCU_CLASS(oc);
rxc->ram_size = 64 * KiB;
rxc->rom_flash_size = 384 * KiB;
rxc->data_flash_size = 32 * KiB;
};
static void r5f562n8_class_init(ObjectClass *oc, void *data)
{
RX62NClass *rxc = RX62N_MCU_CLASS(oc);
rxc->ram_size = 96 * KiB;
rxc->rom_flash_size = 512 * KiB;
rxc->data_flash_size = 32 * KiB;
};
static const TypeInfo rx62n_types[] = {
{
.name = TYPE_R5F562N7_MCU,
.parent = TYPE_RX62N_MCU,
.class_init = r5f562n7_class_init,
}, {
.name = TYPE_R5F562N8_MCU,
.parent = TYPE_RX62N_MCU,
.class_init = r5f562n8_class_init,
}, {
.name = TYPE_RX62N_MCU,
.parent = TYPE_DEVICE,
.instance_size = sizeof(RX62NState),
.class_size = sizeof(RX62NClass),
.class_init = rx62n_class_init,
.abstract = true,
}
};
DEFINE_TYPES(rx62n_types)
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