From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54946) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZtcL3-0001eC-Hw for qemu-devel@nongnu.org; Tue, 03 Nov 2015 09:13:30 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZtcL2-0007uN-IA for qemu-devel@nongnu.org; Tue, 03 Nov 2015 09:13:29 -0500 Received: from mnementh.archaic.org.uk ([2001:8b0:1d0::1]:35243) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZtcL2-0007sB-Co for qemu-devel@nongnu.org; Tue, 03 Nov 2015 09:13:28 -0500 Received: from pm215 by mnementh.archaic.org.uk with local (Exim 4.80) (envelope-from ) id 1ZtcKt-0003Fb-Pp for qemu-devel@nongnu.org; Tue, 03 Nov 2015 14:13:19 +0000 From: Peter Maydell Date: Tue, 3 Nov 2015 14:13:17 +0000 Message-Id: <1446559999-12413-12-git-send-email-peter.maydell@linaro.org> In-Reply-To: <1446559999-12413-1-git-send-email-peter.maydell@linaro.org> References: <1446559999-12413-1-git-send-email-peter.maydell@linaro.org> Subject: [Qemu-devel] [PULL 11/13] hw/arm/virt-acpi-build: _CCA attribute is compulsory List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org From: Graeme Gregory 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 Message-id: 1446460786-13663-1-git-send-email-graeme.gregory@linaro.org Reviewed-by: Shannon Zhao Signed-off-by: Peter Maydell --- hw/arm/virt-acpi-build.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c index 1aaff1f..1430125 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); -- 1.9.1