mirror of
https://github.com/xemu-project/xemu.git
synced 2024-12-03 17:11:01 +00:00
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>
121 lines
3.5 KiB
C
121 lines
3.5 KiB
C
/*
|
|
* QEMU Macintosh Nubus
|
|
*
|
|
* Copyright (c) 2013-2018 Laurent Vivier <laurent@vivier.eu>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "qemu/datadir.h"
|
|
#include "hw/irq.h"
|
|
#include "hw/loader.h"
|
|
#include "hw/nubus/nubus.h"
|
|
#include "qapi/error.h"
|
|
#include "qemu/error-report.h"
|
|
|
|
|
|
void nubus_set_irq(NubusDevice *nd, int level)
|
|
{
|
|
NubusBus *nubus = NUBUS_BUS(qdev_get_parent_bus(DEVICE(nd)));
|
|
|
|
qemu_set_irq(nubus->irqs[nd->slot], level);
|
|
}
|
|
|
|
static void nubus_device_realize(DeviceState *dev, Error **errp)
|
|
{
|
|
NubusBus *nubus = NUBUS_BUS(qdev_get_parent_bus(dev));
|
|
NubusDevice *nd = NUBUS_DEVICE(dev);
|
|
char *name, *path;
|
|
hwaddr slot_offset;
|
|
int64_t size;
|
|
int ret;
|
|
|
|
/* Super */
|
|
slot_offset = nd->slot * NUBUS_SUPER_SLOT_SIZE;
|
|
|
|
name = g_strdup_printf("nubus-super-slot-%x", nd->slot);
|
|
memory_region_init(&nd->super_slot_mem, OBJECT(dev), name,
|
|
NUBUS_SUPER_SLOT_SIZE);
|
|
memory_region_add_subregion(&nubus->super_slot_io, slot_offset,
|
|
&nd->super_slot_mem);
|
|
g_free(name);
|
|
|
|
/* Normal */
|
|
slot_offset = nd->slot * NUBUS_SLOT_SIZE;
|
|
|
|
name = g_strdup_printf("nubus-slot-%x", nd->slot);
|
|
memory_region_init(&nd->slot_mem, OBJECT(dev), name, NUBUS_SLOT_SIZE);
|
|
memory_region_add_subregion(&nubus->slot_io, slot_offset,
|
|
&nd->slot_mem);
|
|
g_free(name);
|
|
|
|
/* Declaration ROM */
|
|
if (nd->romfile != NULL) {
|
|
path = qemu_find_file(QEMU_FILE_TYPE_BIOS, nd->romfile);
|
|
if (path == NULL) {
|
|
path = g_strdup(nd->romfile);
|
|
}
|
|
|
|
size = get_image_size(path);
|
|
if (size < 0) {
|
|
error_setg(errp, "failed to find romfile \"%s\"", nd->romfile);
|
|
g_free(path);
|
|
return;
|
|
} else if (size == 0) {
|
|
error_setg(errp, "romfile \"%s\" is empty", nd->romfile);
|
|
g_free(path);
|
|
return;
|
|
} else if (size > NUBUS_DECL_ROM_MAX_SIZE) {
|
|
error_setg(errp, "romfile \"%s\" too large (maximum size 128K)",
|
|
nd->romfile);
|
|
g_free(path);
|
|
return;
|
|
}
|
|
|
|
name = g_strdup_printf("nubus-slot-%x-declaration-rom", nd->slot);
|
|
memory_region_init_rom(&nd->decl_rom, OBJECT(dev), name, size,
|
|
&error_abort);
|
|
ret = load_image_mr(path, &nd->decl_rom);
|
|
g_free(path);
|
|
if (ret < 0) {
|
|
error_setg(errp, "could not load romfile \"%s\"", nd->romfile);
|
|
return;
|
|
}
|
|
memory_region_add_subregion(&nd->slot_mem, NUBUS_SLOT_SIZE - size,
|
|
&nd->decl_rom);
|
|
}
|
|
}
|
|
|
|
static Property nubus_device_properties[] = {
|
|
DEFINE_PROP_INT32("slot", NubusDevice, slot, -1),
|
|
DEFINE_PROP_STRING("romfile", NubusDevice, romfile),
|
|
DEFINE_PROP_END_OF_LIST()
|
|
};
|
|
|
|
static void nubus_device_class_init(ObjectClass *oc, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(oc);
|
|
|
|
dc->realize = nubus_device_realize;
|
|
dc->bus_type = TYPE_NUBUS_BUS;
|
|
device_class_set_props(dc, nubus_device_properties);
|
|
}
|
|
|
|
static const TypeInfo nubus_device_type_info = {
|
|
.name = TYPE_NUBUS_DEVICE,
|
|
.parent = TYPE_DEVICE,
|
|
.abstract = true,
|
|
.instance_size = sizeof(NubusDevice),
|
|
.class_init = nubus_device_class_init,
|
|
};
|
|
|
|
static void nubus_register_types(void)
|
|
{
|
|
type_register_static(&nubus_device_type_info);
|
|
}
|
|
|
|
type_init(nubus_register_types)
|