d2cf28a0c6
Each Nubus slot has an IRQ line that can be used to request service from the CPU. Connect the IRQs to the Nubus bridge so that they can be wired up using qdev gpios accordingly, and introduce a new nubus_set_irq() function that can be used by Nubus devices to control the slot IRQ. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20210924073808.1041-19-mark.cave-ayland@ilande.co.uk> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
76 lines
1.6 KiB
C
76 lines
1.6 KiB
C
/*
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* Copyright (c) 2013-2018 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 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#ifndef HW_NUBUS_NUBUS_H
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#define HW_NUBUS_NUBUS_H
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#include "hw/qdev-properties.h"
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#include "hw/sysbus.h"
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#include "exec/address-spaces.h"
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#include "qom/object.h"
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#include "qemu/units.h"
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#define NUBUS_SUPER_SLOT_SIZE 0x10000000U
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#define NUBUS_SUPER_SLOT_NB 0xe
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#define NUBUS_SLOT_BASE (NUBUS_SUPER_SLOT_SIZE * \
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(NUBUS_SUPER_SLOT_NB + 1))
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#define NUBUS_SLOT_SIZE 0x01000000
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#define NUBUS_FIRST_SLOT 0x0
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#define NUBUS_LAST_SLOT 0xf
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#define NUBUS_SLOT_NB (NUBUS_LAST_SLOT - NUBUS_FIRST_SLOT + 1)
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#define NUBUS_IRQS 16
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#define TYPE_NUBUS_DEVICE "nubus-device"
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OBJECT_DECLARE_SIMPLE_TYPE(NubusDevice, NUBUS_DEVICE)
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#define TYPE_NUBUS_BUS "nubus-bus"
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OBJECT_DECLARE_SIMPLE_TYPE(NubusBus, NUBUS_BUS)
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#define TYPE_NUBUS_BRIDGE "nubus-bridge"
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OBJECT_DECLARE_SIMPLE_TYPE(NubusBridge, NUBUS_BRIDGE);
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struct NubusBus {
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BusState qbus;
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AddressSpace nubus_as;
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MemoryRegion nubus_mr;
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MemoryRegion super_slot_io;
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MemoryRegion slot_io;
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uint16_t slot_available_mask;
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qemu_irq irqs[NUBUS_IRQS];
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};
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#define NUBUS_DECL_ROM_MAX_SIZE (128 * KiB)
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struct NubusDevice {
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DeviceState qdev;
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int32_t slot;
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MemoryRegion super_slot_mem;
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MemoryRegion slot_mem;
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char *romfile;
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MemoryRegion decl_rom;
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};
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void nubus_set_irq(NubusDevice *nd, int level);
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struct NubusBridge {
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SysBusDevice parent_obj;
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NubusBus bus;
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};
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#endif
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