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hw/isa/piix4: Decouple INTx-to-LNKx routing which is board-specific

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pci_map_irq_fn's in general seem to be board-specific, and PIIX4's
pci_slot_get_pirq() in particular seems very Malta-specific. So move the
latter to malta.c to 1/ keep the board logic in one place and 2/ avoid
PIIX4 to make assumptions about its board.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230109172347.1830-7-shentey@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Bernhard Beschow 2023-01-09 18:23:19 +01:00 committed by Philippe Mathieu-Daudé
parent 738c2eb47f
commit 3c73d590e7
2 changed files with 27 additions and 26 deletions
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26
hw/isa/piix4.c
View File

@ -79,31 +79,6 @@ static void piix4_set_irq(void *opaque, int irq_num, int level)
}
}
static int pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
{
int slot;
slot = PCI_SLOT(pci_dev->devfn);
switch (slot) {
/* PIIX4 USB */
case 10:
return 3;
/* AMD 79C973 Ethernet */
case 11:
return 1;
/* Crystal 4281 Sound */
case 12:
return 2;
/* PCI slot 1 to 4 */
case 18 ... 21:
return ((slot - 18) + irq_num) & 0x03;
/* Unknown device, don't do any translation */
default:
return irq_num;
}
}
static void piix4_isa_reset(DeviceState *dev)
{
PIIX4State *d = PIIX4_PCI_DEVICE(dev);
@ -272,7 +247,6 @@ static void piix4_realize(PCIDevice *dev, Error **errp)
qdev_connect_gpio_out(DEVICE(&s->pm), 0, s->isa[9]);
pci_bus_irqs(pci_bus, piix4_set_irq, s, PIIX_NUM_PIRQS);
pci_bus_map_irqs(pci_bus, pci_slot_get_pirq);
}
static void piix4_init(Object *obj)

27
hw/mips/malta.c
View File

@ -39,6 +39,7 @@
#include "hw/mips/bootloader.h"
#include "hw/mips/cpudevs.h"
#include "hw/pci/pci.h"
#include "hw/pci/pci_bus.h"
#include "qemu/log.h"
#include "hw/mips/bios.h"
#include "hw/ide/pci.h"
@ -993,6 +994,31 @@ static void malta_mips_config(MIPSCPU *cpu)
}
}
static int malta_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
{
int slot;
slot = PCI_SLOT(pci_dev->devfn);
switch (slot) {
/* PIIX4 USB */
case 10:
return 3;
/* AMD 79C973 Ethernet */
case 11:
return 1;
/* Crystal 4281 Sound */
case 12:
return 2;
/* PCI slot 1 to 4 */
case 18 ... 21:
return ((slot - 18) + irq_num) & 0x03;
/* Unknown device, don't do any translation */
default:
return irq_num;
}
}
static void main_cpu_reset(void *opaque)
{
MIPSCPU *cpu = opaque;
@ -1225,6 +1251,7 @@ void mips_malta_init(MachineState *machine)
qdev_prop_set_bit(dev, "cpu-little-endian", !be);
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
pci_bus = PCI_BUS(qdev_get_child_bus(dev, "pci"));
pci_bus_map_irqs(pci_bus, malta_pci_slot_get_pirq);
/* Southbridge */
piix4 = pci_create_simple_multifunction(pci_bus, PIIX4_PCI_DEVFN, true,