Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754245Ab3HBWnV (ORCPT ); Fri, 2 Aug 2013 18:43:21 -0400 Received: from mail-db9lp0249.outbound.messaging.microsoft.com ([213.199.154.249]:28152 "EHLO db9outboundpool.messaging.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752362Ab3HBWnO (ORCPT ); Fri, 2 Aug 2013 18:43:14 -0400 X-Forefront-Antispam-Report: CIP:163.181.249.108;KIP:(null);UIP:(null);IPV:NLI;H:ausb3twp01.amd.com;RD:none;EFVD:NLI X-SpamScore: 4 X-BigFish: VPS4(zzzz1f42h208ch1ee6h1de0h1fdah2073h1202h1e76h1d1ah1d2ah1fc6hz70kd2iz1de098h8275bh1de097hz2dh668h839he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h14ddh1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1d0ch1d2eh1d3fh1dfeh1dffh1e1dh1e23h1155h) X-WSS-ID: 0MQXDRV-01-0MS-02 X-M-MSG: From: Aravind Gopalakrishnan To: , , , , , , , , , CC: Aravind Gopalakrishnan Subject: [PATCH 2/3 V2] EDAC, AMD64_EDAC: Add relevant condition checks as F15h M30h does not support GART or L3. Date: Fri, 2 Aug 2013 17:43:03 -0500 Message-ID: <1375483384-2302-3-git-send-email-Aravind.Gopalakrishnan@amd.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1375483384-2302-1-git-send-email-Aravind.Gopalakrishnan@amd.com> References: <1375483384-2302-1-git-send-email-Aravind.Gopalakrishnan@amd.com> MIME-Version: 1.0 Content-Type: text/plain X-OriginatorOrg: amd.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2177 Lines: 59 Adding code to check for specific model (F15h, M30h) and if yes, do not add flag AMD_NB_GART. Also check cpuid_edx(0x80000006) for prescence of L3. If no L3, do not add any L3 flags. Signed-off-by: Aravind Gopalakrishnan diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c index 3048ded..3ee7a4d 100644 --- a/arch/x86/kernel/amd_nb.c +++ b/arch/x86/kernel/amd_nb.c @@ -20,6 +20,7 @@ const struct pci_device_id amd_nb_misc_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_10H_NB_MISC) }, { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_15H_NB_F3) }, { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_15H_M10H_F3) }, + { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_15H_M30H_NB_F3) }, { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_16H_NB_F3) }, {} }; @@ -27,6 +28,7 @@ EXPORT_SYMBOL(amd_nb_misc_ids); static const struct pci_device_id amd_nb_link_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_15H_NB_F4) }, + { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_15H_M30H_NB_F4) }, { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_16H_NB_F4) }, {} }; @@ -81,13 +83,21 @@ int amd_cache_northbridges(void) next_northbridge(misc, amd_nb_misc_ids); node_to_amd_nb(i)->link = link = next_northbridge(link, amd_nb_link_ids); - } + } + /* GART present only on Fam15h upto model 0fh */ if (boot_cpu_data.x86 == 0xf || boot_cpu_data.x86 == 0x10 || - boot_cpu_data.x86 == 0x15) + (boot_cpu_data.x86 == 0x15 && boot_cpu_data.x86_model < 0x10)) amd_northbridges.flags |= AMD_NB_GART; /* + * Check CPUID Fn8000_0006_EDX: L3 Cache Identifiers. + * If == 0, then no need to proceed as there is no L3. + */ + if (cpuid_edx(0x80000006) == 0) + return 0; + + /* * Some CPU families support L3 Cache Index Disable. There are some * limitations because of E382 and E388 on family 0x10. */ -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/