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Fri, 7 May 2021 19:02:14 +0000 From: Yazen Ghannam To: linux-edac@vger.kernel.org Cc: Yazen Ghannam , linux-kernel@vger.kernel.org, tony.luck@intel.com, x86@kernel.org, Smita.KoralahalliChannabasappa@amd.com Subject: [PATCH 21/25] x86/MCE/AMD: Define function to get CS Fabric ID Date: Fri, 7 May 2021 15:01:36 -0400 Message-Id: <20210507190140.18854-22-Yazen.Ghannam@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210507190140.18854-1-Yazen.Ghannam@amd.com> References: <20210507190140.18854-1-Yazen.Ghannam@amd.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [165.204.25.250] X-ClientProxiedBy: BN6PR21CA0010.namprd21.prod.outlook.com (2603:10b6:404:8e::20) To BN8PR12MB3108.namprd12.prod.outlook.com (2603:10b6:408:40::20) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from aus-x-yghannam.amd.com (165.204.25.250) by BN6PR21CA0010.namprd21.prod.outlook.com (2603:10b6:404:8e::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4129.3 via Frontend Transport; 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This will be expanded for future DF versions. Signed-off-by: Yazen Ghannam --- arch/x86/kernel/cpu/mce/amd.c | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-) diff --git a/arch/x86/kernel/cpu/mce/amd.c b/arch/x86/kernel/cpu/mce/amd.c index b017e4613d8f..6980c5c62f49 100644 --- a/arch/x86/kernel/cpu/mce/amd.c +++ b/arch/x86/kernel/cpu/mce/amd.c @@ -733,6 +733,7 @@ struct addr_ctx { u8 intlv_num_dies; u8 intlv_num_sockets; u8 cs_id; + u8 cs_fabric_id; bool hash_enabled; }; @@ -892,23 +893,34 @@ static void make_space_for_cs_id(struct addr_ctx *ctx) } } +static int get_cs_fabric_id(struct addr_ctx *ctx) +{ + u32 tmp; + + if (amd_df_indirect_read(ctx->nid, df_regs[FAB_BLK_INST_INFO_3], ctx->umc, &tmp)) + return -EINVAL; + + ctx->cs_fabric_id = (tmp >> 8) & 0xFF; + + return 0; +} + static int calculate_cs_id(struct addr_ctx *ctx) { u8 die_id_shift, die_id_mask, socket_id_shift, socket_id_mask; - u8 die_id_bit, sock_id_bit, cs_fabric_id, cs_mask = 0; + u8 die_id_bit, sock_id_bit, cs_mask = 0; u32 tmp; - if (amd_df_indirect_read(ctx->nid, df_regs[FAB_BLK_INST_INFO_3], ctx->umc, &tmp)) + if (get_cs_fabric_id(ctx)) return -EINVAL; - cs_fabric_id = (tmp >> 8) & 0xFF; die_id_bit = 0; /* If interleaved over more than 1 channel: */ if (ctx->intlv_num_chan) { die_id_bit = ctx->intlv_num_chan; cs_mask = (1 << die_id_bit) - 1; - ctx->cs_id = cs_fabric_id & cs_mask; + ctx->cs_id = ctx->cs_fabric_id & cs_mask; } sock_id_bit = die_id_bit; @@ -923,7 +935,7 @@ static int calculate_cs_id(struct addr_ctx *ctx) die_id_shift = (tmp >> 24) & 0xF; die_id_mask = (tmp >> 8) & 0xFF; - ctx->cs_id |= ((cs_fabric_id & die_id_mask) >> die_id_shift) << die_id_bit; + ctx->cs_id |= ((ctx->cs_fabric_id & die_id_mask) >> die_id_shift) << die_id_bit; } /* If interleaved over more than 1 socket: */ @@ -931,7 +943,8 @@ static int calculate_cs_id(struct addr_ctx *ctx) socket_id_shift = (tmp >> 28) & 0xF; socket_id_mask = (tmp >> 16) & 0xFF; - ctx->cs_id |= ((cs_fabric_id & socket_id_mask) >> socket_id_shift) << sock_id_bit; + ctx->cs_id |= ((ctx->cs_fabric_id & socket_id_mask) + >> socket_id_shift) << sock_id_bit; } return 0; -- 2.25.1