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hw/isa/i82378: Remove intermediate IRQ forwarder 

When the i82378 model was added in commit a04ff94097 ("prep:
Add i82378 PCI-to-ISA bridge emulation") the i8259 model was
not yet QOM'ified. This happened later in commit 747c70af78
("i8259: Convert to qdev").

Directly dispatch ISA IRQs to 'cpu_intr' output IRQ
by removing the intermediate i82378_request_out0_irq()
handler. Rename ISA IRQs array as 'isa_irqs_in' to
emphasize these are input IRQs.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230210163744.32182-4-philmd@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
master
Philippe Mathieu-Daudé 2023-02-10 16:05:34 +01:00 committed by Philippe Mathieu-Daudé
parent 08d8bf4fe3
commit cef2e7148e
1 changed files with 4 additions and 11 deletions
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15
hw/isa/i82378.c
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@ -33,7 +33,7 @@ struct I82378State {
PCIDevice parent_obj;
qemu_irq cpu_intr;
qemu_irq *i8259;
qemu_irq *isa_irqs_in;
MemoryRegion io;
};
@ -47,18 +47,12 @@ static const VMStateDescription vmstate_i82378 = {
},
};
static void i82378_request_out0_irq(void *opaque, int irq, int level)
{
I82378State *s = opaque;
qemu_set_irq(s->cpu_intr, level);
}
static void i82378_request_pic_irq(void *opaque, int irq, int level)
{
DeviceState *dev = opaque;
I82378State *s = I82378(dev);
qemu_set_irq(s->i8259[irq], level);
qemu_set_irq(s->isa_irqs_in[irq], level);
}
static void i82378_realize(PCIDevice *pci, Error **errp)
@ -94,9 +88,8 @@ static void i82378_realize(PCIDevice *pci, Error **errp)
*/
/* 2 82C59 (irq) */
s->i8259 = i8259_init(isabus,
qemu_allocate_irq(i82378_request_out0_irq, s, 0));
isa_bus_irqs(isabus, s->i8259);
s->isa_irqs_in = i8259_init(isabus, s->cpu_intr);
isa_bus_irqs(isabus, s->isa_irqs_in);
/* 1 82C54 (pit) */
pit = i8254_pit_init(isabus, 0x40, 0, NULL);