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mos6522: switch over to use qdev gpios for IRQs

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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

5
include/hw/misc/mac_via.h
View file

@ -24,8 +24,6 @@
#define VIA1_IRQ_ADB_DATA_BIT CB2_INT_BIT
#define VIA1_IRQ_ADB_CLOCK_BIT CB1_INT_BIT
#define VIA1_IRQ_NB 8
#define VIA1_IRQ_ONE_SECOND BIT(VIA1_IRQ_ONE_SECOND_BIT)
#define VIA1_IRQ_60HZ BIT(VIA1_IRQ_60HZ_BIT)
#define VIA1_IRQ_ADB_READY BIT(VIA1_IRQ_ADB_READY_BIT)
@ -42,7 +40,6 @@ struct MOS6522Q800VIA1State {
MemoryRegion via_mem;
qemu_irq irqs[VIA1_IRQ_NB];
qemu_irq auxmode_irq;
uint8_t last_b;
@ -85,8 +82,6 @@ struct MOS6522Q800VIA1State {
#define VIA2_IRQ_SCSI_BIT CB2_INT_BIT
#define VIA2_IRQ_ASC_BIT CB1_INT_BIT
#define VIA2_IRQ_NB 8
#define VIA2_IRQ_SCSI_DATA BIT(VIA2_IRQ_SCSI_DATA_BIT)
#define VIA2_IRQ_NUBUS BIT(VIA2_IRQ_NUBUS_BIT)
#define VIA2_IRQ_UNUSED BIT(VIA2_IRQ_SCSI_BIT)

2
include/hw/misc/mos6522.h
View file

@ -57,6 +57,8 @@
#define T2_INT BIT(T2_INT_BIT)
#define T1_INT BIT(T1_INT_BIT)
#define VIA_NUM_INTS 5
/* Bits in ACR */
#define T1MODE 0xc0 /* Timer 1 mode */
#define T1MODE_CONT 0x40 /* continuous interrupts */