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[Qemu-block] [PATCH v2 07/14] pckbd: handle A20 IRQ as GPIO
From: |
Efimov Vasily |
Subject: |
[Qemu-block] [PATCH v2 07/14] pckbd: handle A20 IRQ as GPIO |
Date: |
Wed, 22 Jun 2016 15:24:51 +0300 |
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>
---
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 1e4e383..d615727 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -212,6 +212,7 @@ 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-block] [PATCH v2 00/14] Make Q35 devices closer to Qemu object model., Efimov Vasily, 2016/06/22
- [Qemu-block] [PATCH v2 01/14] ide: move headers to include folder, Efimov Vasily, 2016/06/22
- [Qemu-block] [PATCH v2 03/14] vmport: identify vmport type by macro TYPE_VMPORT, Efimov Vasily, 2016/06/22
- [Qemu-block] [PATCH v2 02/14] pcspk: convert "pit" property type from ptr to link, Efimov Vasily, 2016/06/22
- [Qemu-block] [PATCH v2 04/14] pflash: make TYPE_CFI_PFLASH0{1, 2} macros public, Efimov Vasily, 2016/06/22
- [Qemu-block] [PATCH v2 11/14] ICH9 LPC: move call of isa_bus_irqs to 'realize' method, Efimov Vasily, 2016/06/22
- [Qemu-block] [PATCH v2 07/14] pckbd: handle A20 IRQ as GPIO,
Efimov Vasily <=
- [Qemu-block] [PATCH v2 13/14] MC146818 RTC: add GPIO access to output IRQ, Efimov Vasily, 2016/06/22
- [Qemu-block] [PATCH v2 14/14] ICH9 LPC: configure PCI IRQs routing internally, Efimov Vasily, 2016/06/22
- [Qemu-block] [PATCH v2 10/14] ICH9 LPC: handle GSI as qdev GPIO, Efimov Vasily, 2016/06/22
- [Qemu-block] [PATCH v2 09/14] ICH9 SMB: make TYPE_ICH9_SMB_DEVICE macro public, Efimov Vasily, 2016/06/22
- [Qemu-block] [PATCH v2 05/14] Q35: implement property interfece to several parameters, Efimov Vasily, 2016/06/22
- [Qemu-block] [PATCH v2 06/14] pc_q35: configure Q35 instance using properties, Efimov Vasily, 2016/06/22
- [Qemu-block] [PATCH v2 08/14] port92: handle A20 IRQ as GPIO, Efimov Vasily, 2016/06/22
- [Qemu-block] [PATCH v2 12/14] isa: introduce wrapper isa_connect_gpio_out, Efimov Vasily, 2016/06/22
- Re: [Qemu-block] [PATCH v2 00/14] Make Q35 devices closer to Qemu object model., Paolo Bonzini, 2016/06/22