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[Qemu-devel] [PULL 07/32] pckbd: handle A20 IRQ as GPIO
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PULL 07/32] pckbd: handle A20 IRQ as GPIO |
Date: |
Tue, 28 Jun 2016 19:33:37 +0200 |
From: Efimov Vasily <address@hidden>
The i8042 device has outgouing IRQ line A20. Currently the IRQ is referenced
by a pointer which normally is set during machine initialization. The pointer
is never changed at runtime. So common GPIO model can be applied to A20 IRQ
line. Note that checking for IRQ to be connected as in previous version
of code is not required because qemu_set_irq will do it.
Signed-off-by: Efimov Vasily <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
hw/input/pckbd.c | 21 +++++++--------------
include/hw/i386/pc.h | 1 +
2 files changed, 8 insertions(+), 14 deletions(-)
diff --git a/hw/input/pckbd.c b/hw/input/pckbd.c
index 1d932ec..dc57e2c 100644
--- a/hw/input/pckbd.c
+++ b/hw/input/pckbd.c
@@ -146,7 +146,7 @@ typedef struct KBDState {
qemu_irq irq_kbd;
qemu_irq irq_mouse;
- qemu_irq *a20_out;
+ qemu_irq a20_out;
hwaddr mask;
} KBDState;
@@ -224,9 +224,7 @@ static void outport_write(KBDState *s, uint32_t val)
{
DPRINTF("kbd: write outport=0x%02x\n", val);
s->outport = val;
- if (s->a20_out) {
- qemu_set_irq(*s->a20_out, (val >> 1) & 1);
- }
+ qemu_set_irq(s->a20_out, (val >> 1) & 1);
if (!(val & 1)) {
qemu_system_reset_request();
}
@@ -295,15 +293,11 @@ static void kbd_write_command(void *opaque, hwaddr addr,
kbd_queue(s, s->outport, 0);
break;
case KBD_CCMD_ENABLE_A20:
- if (s->a20_out) {
- qemu_irq_raise(*s->a20_out);
- }
+ qemu_irq_raise(s->a20_out);
s->outport |= KBD_OUT_A20;
break;
case KBD_CCMD_DISABLE_A20:
- if (s->a20_out) {
- qemu_irq_lower(*s->a20_out);
- }
+ qemu_irq_lower(s->a20_out);
s->outport &= ~KBD_OUT_A20;
break;
case KBD_CCMD_RESET:
@@ -507,10 +501,7 @@ void i8042_isa_mouse_fake_event(void *opaque)
void i8042_setup_a20_line(ISADevice *dev, qemu_irq *a20_out)
{
- ISAKBDState *isa = I8042(dev);
- KBDState *s = &isa->kbd;
-
- s->a20_out = a20_out;
+ qdev_connect_gpio_out_named(DEVICE(dev), I8042_A20_LINE, 0, *a20_out);
}
static const VMStateDescription vmstate_kbd_isa = {
@@ -552,6 +543,8 @@ static void i8042_initfn(Object *obj)
"i8042-data", 1);
memory_region_init_io(isa_s->io + 1, obj, &i8042_cmd_ops, s,
"i8042-cmd", 1);
+
+ qdev_init_gpio_out_named(DEVICE(obj), &s->a20_out, I8042_A20_LINE, 1);
}
static void i8042_realizefn(DeviceState *dev, Error **errp)
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index f806be4..7297848 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -214,6 +214,7 @@ void vmmouse_get_data(uint32_t *data);
void vmmouse_set_data(const uint32_t *data);
/* pckbd.c */
+#define I8042_A20_LINE "a20"
void i8042_init(qemu_irq kbd_irq, qemu_irq mouse_irq, uint32_t io_base);
void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq,
--
2.7.4
- [Qemu-devel] [PULL 00/32] Misc patches for QEMU soft freeze, Paolo Bonzini, 2016/06/28
- [Qemu-devel] [PULL 01/32] ide: move headers to include folder, Paolo Bonzini, 2016/06/28
- [Qemu-devel] [PULL 02/32] pcspk: convert "pit" property type from ptr to link, Paolo Bonzini, 2016/06/28
- [Qemu-devel] [PULL 03/32] vmport: identify vmport type by macro TYPE_VMPORT, Paolo Bonzini, 2016/06/28
- [Qemu-devel] [PULL 05/32] Q35: implement property interfece to several parameters, Paolo Bonzini, 2016/06/28
- [Qemu-devel] [PULL 06/32] pc_q35: configure Q35 instance using properties, Paolo Bonzini, 2016/06/28
- [Qemu-devel] [PULL 04/32] pflash: make TYPE_CFI_PFLASH0{1, 2} macros public, Paolo Bonzini, 2016/06/28
- [Qemu-devel] [PULL 07/32] pckbd: handle A20 IRQ as GPIO,
Paolo Bonzini <=
- [Qemu-devel] [PULL 08/32] port92: handle A20 IRQ as GPIO, Paolo Bonzini, 2016/06/28
- [Qemu-devel] [PULL 09/32] ICH9 SMB: make TYPE_ICH9_SMB_DEVICE macro public, Paolo Bonzini, 2016/06/28
- [Qemu-devel] [PULL 11/32] ich9: clean up ich9_lpc_update_pic/ich9_lpc_update_apic and callers, Paolo Bonzini, 2016/06/28
- [Qemu-devel] [PULL 12/32] ich9: unify pic and ioapic IRQ vectors, Paolo Bonzini, 2016/06/28
- [Qemu-devel] [PULL 10/32] ich9: call ich9_lpc_update_pic for disabled pirqs, Paolo Bonzini, 2016/06/28
- [Qemu-devel] [PULL 13/32] ICH9 LPC: handle GSI as qdev GPIO, Paolo Bonzini, 2016/06/28
- [Qemu-devel] [PULL 14/32] ICH9 LPC: move call of isa_bus_irqs to 'realize' method, Paolo Bonzini, 2016/06/28
- [Qemu-devel] [PULL 16/32] MC146818 RTC: add GPIO access to output IRQ, Paolo Bonzini, 2016/06/28
- [Qemu-devel] [PULL 15/32] isa: introduce wrapper isa_connect_gpio_out, Paolo Bonzini, 2016/06/28
- [Qemu-devel] [PULL 17/32] scsi: esp: fix migration, Paolo Bonzini, 2016/06/28