From 6dca62a0000f95e0b7020aa00d0ca9b2c421f341 Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Sat, 26 Oct 2019 18:45:40 +0200 Subject: hw/m68k: add VIA support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Inside the 680x0 Macintosh, VIA (Versatile Interface Adapter) is used to interface the keyboard, Mouse, and real-time clock. It also provides control line for the floppy disk driver, video interface, sound circuitry and serial interface. This implementation is based on the MOS6522 object. Co-developed-by: Mark Cave-Ayland Signed-off-by: Mark Cave-Ayland Signed-off-by: Laurent Vivier Reviewed-by: Hervé Poussineau Message-Id: <20191026164546.30020-6-laurent@vivier.eu> --- include/hw/misc/mac_via.h | 108 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 108 insertions(+) create mode 100644 include/hw/misc/mac_via.h (limited to 'include/hw') diff --git a/include/hw/misc/mac_via.h b/include/hw/misc/mac_via.h new file mode 100644 index 0000000..efc8ef3 --- /dev/null +++ b/include/hw/misc/mac_via.h @@ -0,0 +1,108 @@ +/* + * + * Copyright (c) 2011-2018 Laurent Vivier + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef HW_MISC_MAC_VIA_H +#define HW_MISC_MAC_VIA_H + +#include "exec/memory.h" +#include "hw/sysbus.h" +#include "hw/misc/mos6522.h" + + +/* VIA 1 */ +#define VIA1_IRQ_ONE_SECOND_BIT 0 +#define VIA1_IRQ_VBLANK_BIT 1 +#define VIA1_IRQ_ADB_READY_BIT 2 +#define VIA1_IRQ_ADB_DATA_BIT 3 +#define VIA1_IRQ_ADB_CLOCK_BIT 4 + +#define VIA1_IRQ_NB 8 + +#define VIA1_IRQ_ONE_SECOND (1 << VIA1_IRQ_ONE_SECOND_BIT) +#define VIA1_IRQ_VBLANK (1 << VIA1_IRQ_VBLANK_BIT) +#define VIA1_IRQ_ADB_READY (1 << VIA1_IRQ_ADB_READY_BIT) +#define VIA1_IRQ_ADB_DATA (1 << VIA1_IRQ_ADB_DATA_BIT) +#define VIA1_IRQ_ADB_CLOCK (1 << VIA1_IRQ_ADB_CLOCK_BIT) + + +#define TYPE_MOS6522_Q800_VIA1 "mos6522-q800-via1" +#define MOS6522_Q800_VIA1(obj) OBJECT_CHECK(MOS6522Q800VIA1State, (obj), \ + TYPE_MOS6522_Q800_VIA1) + +typedef struct MOS6522Q800VIA1State { + /*< private >*/ + MOS6522State parent_obj; + + qemu_irq irqs[VIA1_IRQ_NB]; + uint8_t last_b; + uint8_t PRAM[256]; + + /* external timers */ + QEMUTimer *one_second_timer; + int64_t next_second; + QEMUTimer *VBL_timer; + int64_t next_VBL; +} MOS6522Q800VIA1State; + + +/* VIA 2 */ +#define VIA2_IRQ_SCSI_DATA_BIT 0 +#define VIA2_IRQ_SLOT_BIT 1 +#define VIA2_IRQ_UNUSED_BIT 2 +#define VIA2_IRQ_SCSI_BIT 3 +#define VIA2_IRQ_ASC_BIT 4 + +#define VIA2_IRQ_NB 8 + +#define VIA2_IRQ_SCSI_DATA (1 << VIA2_IRQ_SCSI_DATA_BIT) +#define VIA2_IRQ_SLOT (1 << VIA2_IRQ_SLOT_BIT) +#define VIA2_IRQ_UNUSED (1 << VIA2_IRQ_SCSI_BIT) +#define VIA2_IRQ_SCSI (1 << VIA2_IRQ_UNUSED_BIT) +#define VIA2_IRQ_ASC (1 << VIA2_IRQ_ASC_BIT) + +#define TYPE_MOS6522_Q800_VIA2 "mos6522-q800-via2" +#define MOS6522_Q800_VIA2(obj) OBJECT_CHECK(MOS6522Q800VIA2State, (obj), \ + TYPE_MOS6522_Q800_VIA2) + +typedef struct MOS6522Q800VIA2State { + /*< private >*/ + MOS6522State parent_obj; +} MOS6522Q800VIA2State; + + +#define TYPE_MAC_VIA "mac_via" +#define MAC_VIA(obj) OBJECT_CHECK(MacVIAState, (obj), TYPE_MAC_VIA) + +typedef struct MacVIAState { + SysBusDevice busdev; + + /* MMIO */ + MemoryRegion mmio; + MemoryRegion via1mem; + MemoryRegion via2mem; + + /* VIAs */ + MOS6522Q800VIA1State mos6522_via1; + MOS6522Q800VIA2State mos6522_via2; + + /* RTC */ + uint32_t tick_offset; + + uint8_t data_out; + int data_out_cnt; + uint8_t data_in; + uint8_t data_in_cnt; + uint8_t cmd; + int wprotect; + int alt; + + /* ADB */ + ADBBusState adb_bus; +} MacVIAState; + +#endif -- cgit v1.1