c701ec626c
SWIM (Sander-Wozniak Integrated Machine) is the floppy controller of the 680x0 Macintosh. This patch introduces only the basic support: it allows to switch from IWM (Integrated WOZ Machine) mode to the SWIM mode and makes the linux driver happy. It cannot read any floppy image. 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> Message-Id: <20191026164546.30020-10-laurent@vivier.eu>
77 lines
1.5 KiB
C
77 lines
1.5 KiB
C
/*
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* QEMU Macintosh floppy disk controller emulator (SWIM)
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*
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* Copyright (c) 2014-2018 Laurent Vivier <laurent@vivier.eu>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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*/
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#ifndef SWIM_H
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#define SWIM_H
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#include "qemu/osdep.h"
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#include "hw/sysbus.h"
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#define SWIM_MAX_FD 2
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typedef struct SWIMDrive SWIMDrive;
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typedef struct SWIMBus SWIMBus;
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typedef struct SWIMCtrl SWIMCtrl;
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#define TYPE_SWIM_DRIVE "swim-drive"
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#define SWIM_DRIVE(obj) OBJECT_CHECK(SWIMDrive, (obj), TYPE_SWIM_DRIVE)
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struct SWIMDrive {
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DeviceState qdev;
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int32_t unit;
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BlockConf conf;
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};
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#define TYPE_SWIM_BUS "swim-bus"
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#define SWIM_BUS(obj) OBJECT_CHECK(SWIMBus, (obj), TYPE_SWIM_BUS)
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struct SWIMBus {
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BusState bus;
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struct SWIMCtrl *ctrl;
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};
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typedef struct FDrive {
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SWIMCtrl *swimctrl;
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BlockBackend *blk;
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BlockConf *conf;
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} FDrive;
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struct SWIMCtrl {
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MemoryRegion iomem;
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FDrive drives[SWIM_MAX_FD];
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int mode;
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/* IWM mode */
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int iwm_switch;
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uint16_t regs[8];
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#define IWM_PH0 0
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#define IWM_PH1 1
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#define IWM_PH2 2
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#define IWM_PH3 3
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#define IWM_MTR 4
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#define IWM_DRIVE 5
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#define IWM_Q6 6
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#define IWM_Q7 7
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uint8_t iwm_data;
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uint8_t iwm_mode;
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/* SWIM mode */
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uint8_t swim_phase;
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uint8_t swim_mode;
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SWIMBus bus;
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};
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#define TYPE_SWIM "swim"
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#define SWIM(obj) OBJECT_CHECK(SWIM, (obj), TYPE_SWIM)
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typedef struct SWIM {
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SysBusDevice parent_obj;
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SWIMCtrl ctrl;
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} SWIM;
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#endif
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