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| author | Graeme Gregory <graeme.gregory@linaro.org> | 2015-11-03 13:49:42 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2015-11-03 13:49:42 +0000 |
| commit | bc64b96c984abfe84f43562ca7480bb4f2af0613 (patch) | |
| tree | 5b8966393f8448c2f2ee7a99b3ad758044f91947 /hw/arm/virt-acpi-build.c | |
| parent | 06e5cf7acd1f94ab7c1cd6945974a1f039672940 (diff) | |
hw/arm/virt-acpi-build: _CCA attribute is compulsory
According to ACPI specification 6.2.17 _CCA (Cache Coherency Attribute)
this attribute is compulsory on ARM systems. Add this attribute to
the PCI host bridges as required.
Without this the kernel will produce the error
[Firmware Bug]: PCI device 0000:00:00.0 fail to setup DMA.
Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org>
Message-id: 1446460786-13663-1-git-send-email-graeme.gregory@linaro.org
Reviewed-by: Shannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/arm/virt-acpi-build.c')
| -rw-r--r-- | hw/arm/virt-acpi-build.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c index 1aaff1f662..1430125885 100644 --- a/hw/arm/virt-acpi-build.c +++ b/hw/arm/virt-acpi-build.c @@ -180,6 +180,7 @@ static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap, int irq, aml_append(dev, aml_name_decl("_ADR", aml_int(0))); aml_append(dev, aml_name_decl("_UID", aml_string("PCI0"))); aml_append(dev, aml_name_decl("_STR", aml_unicode("PCIe 0 Device"))); + aml_append(dev, aml_name_decl("_CCA", aml_int(1))); /* Declare the PCI Routing Table. */ Aml *rt_pkg = aml_package(nr_pcie_buses * PCI_NUM_PINS); |