diff options
Diffstat (limited to 'hw/lm32_pic.c')
| -rw-r--r-- | hw/lm32_pic.c | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/hw/lm32_pic.c b/hw/lm32_pic.c deleted file mode 100644 index d17c310d5c..0000000000 --- a/hw/lm32_pic.c +++ /dev/null @@ -1,199 +0,0 @@ -/* - * LatticeMico32 CPU interrupt controller logic. - * - * Copyright (c) 2010 Michael Walle <michael@walle.cc> - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, see <http://www.gnu.org/licenses/>. - */ - -#include <assert.h> - -#include "hw/hw.h" -#include "hw/pc.h" -#include "monitor/monitor.h" -#include "hw/sysbus.h" -#include "trace.h" -#include "hw/lm32_pic.h" - -struct LM32PicState { - SysBusDevice busdev; - qemu_irq parent_irq; - uint32_t im; /* interrupt mask */ - uint32_t ip; /* interrupt pending */ - uint32_t irq_state; - - /* statistics */ - uint32_t stats_irq_count[32]; -}; -typedef struct LM32PicState LM32PicState; - -static LM32PicState *pic; -void lm32_do_pic_info(Monitor *mon, const QDict *qdict) -{ - if (pic == NULL) { - return; - } - - monitor_printf(mon, "lm32-pic: im=%08x ip=%08x irq_state=%08x\n", - pic->im, pic->ip, pic->irq_state); -} - -void lm32_irq_info(Monitor *mon, const QDict *qdict) -{ - int i; - uint32_t count; - - if (pic == NULL) { - return; - } - - monitor_printf(mon, "IRQ statistics:\n"); - for (i = 0; i < 32; i++) { - count = pic->stats_irq_count[i]; - if (count > 0) { - monitor_printf(mon, "%2d: %u\n", i, count); - } - } -} - -static void update_irq(LM32PicState *s) -{ - s->ip |= s->irq_state; - - if (s->ip & s->im) { - trace_lm32_pic_raise_irq(); - qemu_irq_raise(s->parent_irq); - } else { - trace_lm32_pic_lower_irq(); - qemu_irq_lower(s->parent_irq); - } -} - -static void irq_handler(void *opaque, int irq, int level) -{ - LM32PicState *s = opaque; - - assert(irq < 32); - trace_lm32_pic_interrupt(irq, level); - - if (level) { - s->irq_state |= (1 << irq); - s->stats_irq_count[irq]++; - } else { - s->irq_state &= ~(1 << irq); - } - - update_irq(s); -} - -void lm32_pic_set_im(DeviceState *d, uint32_t im) -{ - LM32PicState *s = container_of(d, LM32PicState, busdev.qdev); - - trace_lm32_pic_set_im(im); - s->im = im; - - update_irq(s); -} - -void lm32_pic_set_ip(DeviceState *d, uint32_t ip) -{ - LM32PicState *s = container_of(d, LM32PicState, busdev.qdev); - - trace_lm32_pic_set_ip(ip); - - /* ack interrupt */ - s->ip &= ~ip; - - update_irq(s); -} - -uint32_t lm32_pic_get_im(DeviceState *d) -{ - LM32PicState *s = container_of(d, LM32PicState, busdev.qdev); - - trace_lm32_pic_get_im(s->im); - return s->im; -} - -uint32_t lm32_pic_get_ip(DeviceState *d) -{ - LM32PicState *s = container_of(d, LM32PicState, busdev.qdev); - - trace_lm32_pic_get_ip(s->ip); - return s->ip; -} - -static void pic_reset(DeviceState *d) -{ - LM32PicState *s = container_of(d, LM32PicState, busdev.qdev); - int i; - - s->im = 0; - s->ip = 0; - s->irq_state = 0; - for (i = 0; i < 32; i++) { - s->stats_irq_count[i] = 0; - } -} - -static int lm32_pic_init(SysBusDevice *dev) -{ - LM32PicState *s = FROM_SYSBUS(typeof(*s), dev); - - qdev_init_gpio_in(&dev->qdev, irq_handler, 32); - sysbus_init_irq(dev, &s->parent_irq); - - pic = s; - - return 0; -} - -static const VMStateDescription vmstate_lm32_pic = { - .name = "lm32-pic", - .version_id = 1, - .minimum_version_id = 1, - .minimum_version_id_old = 1, - .fields = (VMStateField[]) { - VMSTATE_UINT32(im, LM32PicState), - VMSTATE_UINT32(ip, LM32PicState), - VMSTATE_UINT32(irq_state, LM32PicState), - VMSTATE_UINT32_ARRAY(stats_irq_count, LM32PicState, 32), - VMSTATE_END_OF_LIST() - } -}; - -static void lm32_pic_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); - - k->init = lm32_pic_init; - dc->reset = pic_reset; - dc->vmsd = &vmstate_lm32_pic; -} - -static const TypeInfo lm32_pic_info = { - .name = "lm32-pic", - .parent = TYPE_SYS_BUS_DEVICE, - .instance_size = sizeof(LM32PicState), - .class_init = lm32_pic_class_init, -}; - -static void lm32_pic_register_types(void) -{ - type_register_static(&lm32_pic_info); -} - -type_init(lm32_pic_register_types) |