motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-06 01:03:55 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

mos6522: switch over to use qdev gpios for IRQs

Browse source 
For historical reasons each mos6522 instance implements its own setting and
update of the IFR flag bits using methods exposed by MOS6522DeviceClass. As
of today this is no longer required, and it is now possible to implement
the mos6522 IRQs as standard qdev gpios.

Switch over to use qdev gpios for the mos6522 device and update all instances
accordingly.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220305150957.5053-5-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
This commit is contained in:
Mark Cave-Ayland 2022-03-05 15:09:49 +00:00
parent e787221ebf
commit ebe5bca2ef
6 changed files with 31 additions and 56 deletions
Download patch file Download diff file Expand all files Collapse all files

56
hw/misc/mac_via.c
View file

@ -325,10 +325,9 @@ static void via1_sixty_hz(void *opaque)
{
MOS6522Q800VIA1State *v1s = opaque;
MOS6522State *s = MOS6522(v1s);
MOS6522DeviceClass *mdc = MOS6522_GET_CLASS(s);
qemu_irq irq = qdev_get_gpio_in(DEVICE(s), VIA1_IRQ_60HZ_BIT);
s->ifr |= VIA1_IRQ_60HZ;
mdc->update_irq(s);
qemu_set_irq(irq, 1);
via1_sixty_hz_update(v1s);
}
@ -337,44 +336,13 @@ static void via1_one_second(void *opaque)
{
MOS6522Q800VIA1State *v1s = opaque;
MOS6522State *s = MOS6522(v1s);
MOS6522DeviceClass *mdc = MOS6522_GET_CLASS(s);
qemu_irq irq = qdev_get_gpio_in(DEVICE(s), VIA1_IRQ_ONE_SECOND_BIT);
s->ifr |= VIA1_IRQ_ONE_SECOND;
mdc->update_irq(s);
qemu_set_irq(irq, 1);
via1_one_second_update(v1s);
}
static void via1_irq_request(void *opaque, int irq, int level)
{
MOS6522Q800VIA1State *v1s = opaque;
MOS6522State *s = MOS6522(v1s);
MOS6522DeviceClass *mdc = MOS6522_GET_CLASS(s);
if (level) {
s->ifr |= 1 << irq;
} else {
s->ifr &= ~(1 << irq);
}
mdc->update_irq(s);
}
static void via2_irq_request(void *opaque, int irq, int level)
{
MOS6522Q800VIA2State *v2s = opaque;
MOS6522State *s = MOS6522(v2s);
MOS6522DeviceClass *mdc = MOS6522_GET_CLASS(s);
if (level) {
s->ifr |= 1 << irq;
} else {
s->ifr &= ~(1 << irq);
}
mdc->update_irq(s);
}
static void pram_update(MOS6522Q800VIA1State *v1s)
{
@ -1061,8 +1029,6 @@ static void mos6522_q800_via1_init(Object *obj)
qbus_init((BusState *)&v1s->adb_bus, sizeof(v1s->adb_bus),
TYPE_ADB_BUS, DEVICE(v1s), "adb.0");
qdev_init_gpio_in(DEVICE(obj), via1_irq_request, VIA1_IRQ_NB);
/* A/UX mode */
qdev_init_gpio_out(DEVICE(obj), &v1s->auxmode_irq, 1);
}
@ -1150,22 +1116,20 @@ static void mos6522_q800_via2_reset(DeviceState *dev)
ms->a = 0x7f;
}
static void via2_nubus_irq_request(void *opaque, int irq, int level)
static void via2_nubus_irq_request(void *opaque, int n, int level)
{
MOS6522Q800VIA2State *v2s = opaque;
MOS6522State *s = MOS6522(v2s);
MOS6522DeviceClass *mdc = MOS6522_GET_CLASS(s);
qemu_irq irq = qdev_get_gpio_in(DEVICE(s), VIA2_IRQ_NUBUS_BIT);
if (level) {
/* Port A nubus IRQ inputs are active LOW */
s->a &= ~(1 << irq);
s->ifr |= 1 << VIA2_IRQ_NUBUS_BIT;
s->a &= ~(1 << n);
} else {
s->a |= (1 << irq);
s->ifr &= ~(1 << VIA2_IRQ_NUBUS_BIT);
s->a |= (1 << n);
}
mdc->update_irq(s);
qemu_set_irq(irq, level);
}
static void mos6522_q800_via2_init(Object *obj)
@ -1177,8 +1141,6 @@ static void mos6522_q800_via2_init(Object *obj)
"via2", VIA_SIZE);
sysbus_init_mmio(sbd, &v2s->via_mem);
qdev_init_gpio_in(DEVICE(obj), via2_irq_request, VIA2_IRQ_NB);
qdev_init_gpio_in_named(DEVICE(obj), via2_nubus_irq_request, "nubus-irq",
VIA2_NUBUS_IRQ_NB);
}