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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>
121 lines
3.5 KiB
C
121 lines
3.5 KiB
C
/*
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* QEMU Macintosh Nubus
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*
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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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#include "qemu/osdep.h"
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#include "qemu/datadir.h"
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#include "hw/irq.h"
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#include "hw/loader.h"
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#include "hw/nubus/nubus.h"
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#include "qapi/error.h"
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#include "qemu/error-report.h"
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void nubus_set_irq(NubusDevice *nd, int level)
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{
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NubusBus *nubus = NUBUS_BUS(qdev_get_parent_bus(DEVICE(nd)));
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qemu_set_irq(nubus->irqs[nd->slot], level);
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}
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static void nubus_device_realize(DeviceState *dev, Error **errp)
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{
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NubusBus *nubus = NUBUS_BUS(qdev_get_parent_bus(dev));
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NubusDevice *nd = NUBUS_DEVICE(dev);
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char *name, *path;
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hwaddr slot_offset;
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int64_t size;
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int ret;
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/* Super */
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slot_offset = nd->slot * NUBUS_SUPER_SLOT_SIZE;
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name = g_strdup_printf("nubus-super-slot-%x", nd->slot);
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memory_region_init(&nd->super_slot_mem, OBJECT(dev), name,
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NUBUS_SUPER_SLOT_SIZE);
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memory_region_add_subregion(&nubus->super_slot_io, slot_offset,
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&nd->super_slot_mem);
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g_free(name);
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/* Normal */
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slot_offset = nd->slot * NUBUS_SLOT_SIZE;
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name = g_strdup_printf("nubus-slot-%x", nd->slot);
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memory_region_init(&nd->slot_mem, OBJECT(dev), name, NUBUS_SLOT_SIZE);
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memory_region_add_subregion(&nubus->slot_io, slot_offset,
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&nd->slot_mem);
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g_free(name);
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/* Declaration ROM */
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if (nd->romfile != NULL) {
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path = qemu_find_file(QEMU_FILE_TYPE_BIOS, nd->romfile);
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if (path == NULL) {
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path = g_strdup(nd->romfile);
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}
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size = get_image_size(path);
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if (size < 0) {
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error_setg(errp, "failed to find romfile \"%s\"", nd->romfile);
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g_free(path);
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return;
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} else if (size == 0) {
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error_setg(errp, "romfile \"%s\" is empty", nd->romfile);
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g_free(path);
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return;
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} else if (size > NUBUS_DECL_ROM_MAX_SIZE) {
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error_setg(errp, "romfile \"%s\" too large (maximum size 128K)",
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nd->romfile);
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g_free(path);
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return;
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}
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name = g_strdup_printf("nubus-slot-%x-declaration-rom", nd->slot);
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memory_region_init_rom(&nd->decl_rom, OBJECT(dev), name, size,
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&error_abort);
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ret = load_image_mr(path, &nd->decl_rom);
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g_free(path);
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if (ret < 0) {
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error_setg(errp, "could not load romfile \"%s\"", nd->romfile);
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return;
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}
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memory_region_add_subregion(&nd->slot_mem, NUBUS_SLOT_SIZE - size,
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&nd->decl_rom);
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}
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}
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static Property nubus_device_properties[] = {
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DEFINE_PROP_INT32("slot", NubusDevice, slot, -1),
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DEFINE_PROP_STRING("romfile", NubusDevice, romfile),
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DEFINE_PROP_END_OF_LIST()
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};
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static void nubus_device_class_init(ObjectClass *oc, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(oc);
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dc->realize = nubus_device_realize;
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dc->bus_type = TYPE_NUBUS_BUS;
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device_class_set_props(dc, nubus_device_properties);
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}
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static const TypeInfo nubus_device_type_info = {
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.name = TYPE_NUBUS_DEVICE,
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.parent = TYPE_DEVICE,
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.abstract = true,
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.instance_size = sizeof(NubusDevice),
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.class_init = nubus_device_class_init,
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};
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static void nubus_register_types(void)
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{
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type_register_static(&nubus_device_type_info);
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}
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type_init(nubus_register_types)
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