50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* Emulation of the SFF-8038i IDE Bus Master.
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*
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* Emulation core dispatcher.
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*
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*
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*
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* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
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* Miran Grca, <mgrca8@gmail.com>
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* Copyright 2008-2020 Sarah Walker.
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* Copyright 2016-2020 Miran Grca.
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*/
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typedef struct
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{
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uint8_t command, status,
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ptr0, enabled;
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uint16_t base, pad;
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uint32_t ptr, ptr_cur,
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addr;
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int count, eot,
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slot,
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irq_mode[2], irq_pin,
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irq_line;
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} sff8038i_t;
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extern const device_t sff8038i_device;
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extern void sff_bus_master_handler(sff8038i_t *dev, int enabled, uint16_t base);
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extern int sff_bus_master_dma_read(int channel, uint8_t *data, int transfer_length, void *priv);
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extern int sff_bus_master_dma_write(int channel, uint8_t *data, int transfer_length, void *priv);
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extern void sff_bus_master_set_irq(int channel, void *priv);
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extern void sff_bus_master_reset(sff8038i_t *dev, uint16_t old_base);
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extern void sff_set_slot(sff8038i_t *dev, int slot);
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extern void sff_set_irq_line(sff8038i_t *dev, int irq_line);
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extern void sff_set_irq_mode(sff8038i_t *dev, int channel, int irq_mode);
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extern void sff_set_irq_pin(sff8038i_t *dev, int irq_pin);
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