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mac_via: add GPIO for A/UX mode 

Add a new auxmode GPIO that is updated when port B bit 6 is changed indicating
whether the hardware is configured for A/UX mode.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20211020134131.4392-5-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Mark Cave-Ayland 2021-10-20 14:41:27 +01:00 committed by Laurent Vivier
parent 91ff5e4dcd
commit 291bc1809a
3 changed files with 21 additions and 0 deletions
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19
hw/misc/mac_via.c
View File

@ -880,6 +880,21 @@ static void via1_adb_update(MOS6522Q800VIA1State *v1s)
}
}
static void via1_auxmode_update(MOS6522Q800VIA1State *v1s)
{
MOS6522State *s = MOS6522(v1s);
int oldirq, irq;
oldirq = (v1s->last_b & VIA1B_vMystery) ? 1 : 0;
irq = (s->b & VIA1B_vMystery) ? 1 : 0;
/* Check to see if the A/UX mode bit has changed */
if (irq != oldirq) {
trace_via1_auxmode(irq);
qemu_set_irq(v1s->auxmode_irq, irq);
}
}
static uint64_t mos6522_q800_via1_read(void *opaque, hwaddr addr, unsigned size)
{
MOS6522Q800VIA1State *s = MOS6522_Q800_VIA1(opaque);
@ -902,6 +917,7 @@ static void mos6522_q800_via1_write(void *opaque, hwaddr addr, uint64_t val,
case VIA_REG_B:
via1_rtc_update(v1s);
via1_adb_update(v1s);
via1_auxmode_update(v1s);
v1s->last_b = ms->b;
break;
@ -1046,6 +1062,9 @@ static void mos6522_q800_via1_init(Object *obj)
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);
}
static const VMStateDescription vmstate_q800_via1 = {

1
hw/misc/trace-events
View File

@ -228,6 +228,7 @@ via1_rtc_cmd_pram_sect_write(int sector, int offset, int addr, int value) "secto
via1_adb_send(const char *state, uint8_t data, const char *vadbint) "state %s data=0x%02x vADBInt=%s"
via1_adb_receive(const char *state, uint8_t data, const char *vadbint, int status, int index, int size) "state %s data=0x%02x vADBInt=%s status=0x%x index=%d size=%d"
via1_adb_poll(uint8_t data, const char *vadbint, int status, int index, int size) "data=0x%02x vADBInt=%s status=0x%x index=%d size=%d"
via1_auxmode(int mode) "setting auxmode to %d"
# grlib_ahb_apb_pnp.c
grlib_ahb_pnp_read(uint64_t addr, uint32_t value) "AHB PnP read addr:0x%03"PRIx64" data:0x%08x"

1
include/hw/misc/mac_via.h
View File

@ -43,6 +43,7 @@ struct MOS6522Q800VIA1State {
MemoryRegion via_mem;
qemu_irq irqs[VIA1_IRQ_NB];
qemu_irq auxmode_irq;
uint8_t last_b;
/* RTC */