87a34e2adb
VIA needs to be able to poll the ADB interface and to read/write data from/to the bus. This patch adds functions allowing that. Co-developed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Hervé Poussineau <hpoussin@reactos.org> Reviewed-by: Thomas Huth <huth@tuxfamily.org> Message-Id: <20191026164546.30020-7-laurent@vivier.eu>
116 lines
2.8 KiB
C
116 lines
2.8 KiB
C
/*
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*
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* Copyright (c) 2011-2018 Laurent Vivier
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef HW_MISC_MAC_VIA_H
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#define HW_MISC_MAC_VIA_H
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#include "exec/memory.h"
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#include "hw/sysbus.h"
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#include "hw/misc/mos6522.h"
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/* VIA 1 */
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#define VIA1_IRQ_ONE_SECOND_BIT 0
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#define VIA1_IRQ_VBLANK_BIT 1
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#define VIA1_IRQ_ADB_READY_BIT 2
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#define VIA1_IRQ_ADB_DATA_BIT 3
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#define VIA1_IRQ_ADB_CLOCK_BIT 4
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#define VIA1_IRQ_NB 8
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#define VIA1_IRQ_ONE_SECOND (1 << VIA1_IRQ_ONE_SECOND_BIT)
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#define VIA1_IRQ_VBLANK (1 << VIA1_IRQ_VBLANK_BIT)
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#define VIA1_IRQ_ADB_READY (1 << VIA1_IRQ_ADB_READY_BIT)
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#define VIA1_IRQ_ADB_DATA (1 << VIA1_IRQ_ADB_DATA_BIT)
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#define VIA1_IRQ_ADB_CLOCK (1 << VIA1_IRQ_ADB_CLOCK_BIT)
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#define TYPE_MOS6522_Q800_VIA1 "mos6522-q800-via1"
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#define MOS6522_Q800_VIA1(obj) OBJECT_CHECK(MOS6522Q800VIA1State, (obj), \
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TYPE_MOS6522_Q800_VIA1)
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typedef struct MOS6522Q800VIA1State {
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/*< private >*/
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MOS6522State parent_obj;
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qemu_irq irqs[VIA1_IRQ_NB];
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uint8_t last_b;
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uint8_t PRAM[256];
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/* external timers */
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QEMUTimer *one_second_timer;
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int64_t next_second;
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QEMUTimer *VBL_timer;
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int64_t next_VBL;
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} MOS6522Q800VIA1State;
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/* VIA 2 */
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#define VIA2_IRQ_SCSI_DATA_BIT 0
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#define VIA2_IRQ_SLOT_BIT 1
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#define VIA2_IRQ_UNUSED_BIT 2
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#define VIA2_IRQ_SCSI_BIT 3
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#define VIA2_IRQ_ASC_BIT 4
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#define VIA2_IRQ_NB 8
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#define VIA2_IRQ_SCSI_DATA (1 << VIA2_IRQ_SCSI_DATA_BIT)
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#define VIA2_IRQ_SLOT (1 << VIA2_IRQ_SLOT_BIT)
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#define VIA2_IRQ_UNUSED (1 << VIA2_IRQ_SCSI_BIT)
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#define VIA2_IRQ_SCSI (1 << VIA2_IRQ_UNUSED_BIT)
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#define VIA2_IRQ_ASC (1 << VIA2_IRQ_ASC_BIT)
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#define TYPE_MOS6522_Q800_VIA2 "mos6522-q800-via2"
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#define MOS6522_Q800_VIA2(obj) OBJECT_CHECK(MOS6522Q800VIA2State, (obj), \
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TYPE_MOS6522_Q800_VIA2)
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typedef struct MOS6522Q800VIA2State {
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/*< private >*/
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MOS6522State parent_obj;
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} MOS6522Q800VIA2State;
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#define TYPE_MAC_VIA "mac_via"
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#define MAC_VIA(obj) OBJECT_CHECK(MacVIAState, (obj), TYPE_MAC_VIA)
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typedef struct MacVIAState {
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SysBusDevice busdev;
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/* MMIO */
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MemoryRegion mmio;
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MemoryRegion via1mem;
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MemoryRegion via2mem;
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/* VIAs */
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MOS6522Q800VIA1State mos6522_via1;
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MOS6522Q800VIA2State mos6522_via2;
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/* RTC */
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uint32_t tick_offset;
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uint8_t data_out;
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int data_out_cnt;
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uint8_t data_in;
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uint8_t data_in_cnt;
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uint8_t cmd;
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int wprotect;
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int alt;
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/* ADB */
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ADBBusState adb_bus;
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QEMUTimer *adb_poll_timer;
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qemu_irq adb_data_ready;
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int adb_data_in_size;
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int adb_data_in_index;
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int adb_data_out_index;
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uint8_t adb_data_in[128];
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uint8_t adb_data_out[16];
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} MacVIAState;
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#endif
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