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hw/mips/gt64xxx_pci: Let the GT64120 manage the lower 512MiB hole

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Per the comment in the Malta board, the [0x0000.0000-0x2000.0000]
range is decoded by the GT64120, so move the "empty_slot" there.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20221209151533.69516-3-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2021-03-02 23:42:56 +01:00 committed by Philippe Mathieu-Daudé
parent 7c032bfbe8
commit 37e506b69a
4 changed files with 9 additions and 8 deletions
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1
configs/devices/mips-softmmu/common.mak
View File

@ -24,7 +24,6 @@ CONFIG_IDE_ISA=y
CONFIG_PFLASH_CFI01=y
CONFIG_I8259=y
CONFIG_MC146818RTC=y
CONFIG_EMPTY_SLOT=y
CONFIG_MIPS_CPS=y
CONFIG_MIPS_ITU=y
CONFIG_MALTA=y

1
hw/mips/Kconfig
View File

@ -64,4 +64,5 @@ config FW_CFG_MIPS
config GT64120
bool
select PCI
select EMPTY_SLOT
select I8259

8
hw/mips/gt64xxx_pci.c
View File

@ -28,6 +28,7 @@
#include "qemu/log.h"
#include "hw/pci/pci_device.h"
#include "hw/pci/pci_host.h"
#include "hw/misc/empty_slot.h"
#include "migration/vmstate.h"
#include "hw/intc/i8259.h"
#include "hw/irq.h"
@ -1200,6 +1201,13 @@ static void gt64120_realize(DeviceState *dev, Error **errp)
PCI_DEVFN(18, 0), TYPE_PCI_BUS);
pci_create_simple(phb->bus, PCI_DEVFN(0, 0), "gt64120_pci");
/*
* The whole address space decoded by the GT-64120A doesn't generate
* exception when accessing invalid memory. Create an empty slot to
* emulate this feature.
*/
empty_slot_init("GT64120", 0, 0x20000000);
}
static void gt64120_pci_realize(PCIDevice *d, Error **errp)

7
hw/mips/malta.c
View File

@ -53,7 +53,6 @@
#include "sysemu/runstate.h"
#include "qapi/error.h"
#include "qemu/error-report.h"
#include "hw/misc/empty_slot.h"
#include "sysemu/kvm.h"
#include "semihosting/semihost.h"
#include "hw/mips/cps.h"
@ -1399,12 +1398,6 @@ void mips_malta_init(MachineState *machine)
/* Northbridge */
dev = sysbus_create_simple("gt64120", -1, NULL);
pci_bus = PCI_BUS(qdev_get_child_bus(dev, "pci"));
/*
* The whole address space decoded by the GT-64120A doesn't generate
* exception when accessing invalid memory. Create an empty slot to
* emulate this feature.
*/
empty_slot_init("GT64120", 0, 0x20000000);
/* Southbridge */
piix4 = pci_create_simple_multifunction(pci_bus, PCI_DEVFN(10, 0), true,