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dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; Received: from SATLEXMB04.amd.com (165.204.84.17) by CO1NAM11FT037.mail.protection.outlook.com (10.13.174.91) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.4649.14 via Frontend Transport; Thu, 28 Oct 2021 17:58:40 +0000 Received: from yaz-ubuntu.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.15; Thu, 28 Oct 2021 12:58:38 -0500 From: Yazen Ghannam To: CC: , , , , , , , , , Yazen Ghannam Subject: [PATCH v3 26/33] EDAC/amd64: Update CS ID calculation to match reference code Date: Thu, 28 Oct 2021 17:57:21 +0000 Message-ID: <20211028175728.121452-27-yazen.ghannam@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211028175728.121452-1-yazen.ghannam@amd.com> References: <20211028175728.121452-1-yazen.ghannam@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 931eee8f-4f43-4494-8d7f-08d99a3c934c X-MS-TrafficTypeDiagnostic: DM4PR12MB5360: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6790; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Oct 2021 17:58:40.8029 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 931eee8f-4f43-4494-8d7f-08d99a3c934c X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT037.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5360 Precedence: bulk List-ID: X-Mailing-List: linux-edac@vger.kernel.org Redo the current CS ID calculations to match the reference code. Helper functions are introduced that will be expanded for future DF versions. Use u16 type for dst_fabric_id and component_id_mask values to accommodate larger bitfields in future DF versions. Signed-off-by: Yazen Ghannam --- Link: https://lkml.kernel.org/r/20210623192002.3671647-28-yazen.ghannam@amd.com v2->v3: * Was patch 27 in v2. v1->v2: * Moved from arch/x86 to EDAC. * Added functions to data_fabric_ops. drivers/edac/amd64_edac.c | 52 ++++++++++++++++++++++++++------------- 1 file changed, 35 insertions(+), 17 deletions(-) diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index 9312784b2b0f..9c74813c4128 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -1083,6 +1083,8 @@ struct addr_ctx { struct data_fabric_ops { u64 (*get_hi_addr_offset) (struct addr_ctx *ctx); + u16 (*get_dst_fabric_id) (struct addr_ctx *ctx); + u16 (*get_component_id_mask) (struct addr_ctx *ctx); u8 (*get_die_id_shift) (struct addr_ctx *ctx); u8 (*get_socket_id_shift) (struct addr_ctx *ctx); int (*get_intlv_mode) (struct addr_ctx *ctx); @@ -1204,6 +1206,16 @@ static u8 get_socket_id_shift_df2(struct addr_ctx *ctx) return (ctx->reg_fab_id_mask0 >> 28) & 0xF; } +static u16 get_dst_fabric_id_df2(struct addr_ctx *ctx) +{ + return ctx->reg_limit_addr & 0xFF; +} + +static u16 get_component_id_mask_df2(struct addr_ctx *ctx) +{ + return (~(ctx->socket_id_mask | ctx->die_id_mask)) & 0xFF; +} + struct data_fabric_ops df2_ops = { .get_hi_addr_offset = get_hi_addr_offset_df2, .get_intlv_mode = get_intlv_mode_df2, @@ -1213,6 +1225,8 @@ struct data_fabric_ops df2_ops = { .get_masks = get_masks_df2, .get_die_id_shift = get_die_id_shift_df2, .get_socket_id_shift = get_socket_id_shift_df2, + .get_dst_fabric_id = get_dst_fabric_id_df2, + .get_component_id_mask = get_component_id_mask_df2, }; struct data_fabric_ops *df_ops; @@ -1299,38 +1313,42 @@ static void get_intlv_num_chan(struct addr_ctx *ctx) } } -static int calculate_cs_id(struct addr_ctx *ctx) +static u8 calc_level_bits(u8 id, u8 level_mask, u8 shift, u8 mask, u8 num_bits) { - u8 die_id_bit = 0, sock_id_bit, cs_mask = 0; + return (((id & level_mask) >> shift) & mask) << num_bits; +} - /* 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 = ctx->cs_fabric_id & cs_mask; - } +static int calculate_cs_id(struct addr_ctx *ctx) +{ + u16 dst_fabric_id = df_ops->get_dst_fabric_id(ctx); + u16 mask, num_intlv_bits = ctx->intlv_num_chan; - /* Return early if no die interleaving and no socket interleaving. */ - if (!(ctx->intlv_num_dies || ctx->intlv_num_sockets)) - return 0; + mask = df_ops->get_component_id_mask(ctx); + ctx->cs_id = (ctx->cs_fabric_id & mask) - (dst_fabric_id & mask); - sock_id_bit = die_id_bit; + mask = (1 << num_intlv_bits) - 1; + ctx->cs_id &= mask; /* If interleaved over more than 1 die: */ if (ctx->intlv_num_dies) { u8 die_id_shift = df_ops->get_die_id_shift(ctx); - sock_id_bit = die_id_bit + ctx->intlv_num_dies; - ctx->cs_id |= ((ctx->cs_fabric_id & ctx->die_id_mask) - >> die_id_shift) << die_id_bit; + mask = (1 << ctx->intlv_num_dies) - 1; + + ctx->cs_id |= calc_level_bits(ctx->cs_fabric_id, ctx->die_id_mask, + die_id_shift, mask, num_intlv_bits); + + num_intlv_bits += ctx->intlv_num_dies; } /* If interleaved over more than 1 socket: */ if (ctx->intlv_num_sockets) { u8 socket_id_shift = df_ops->get_socket_id_shift(ctx); - ctx->cs_id |= ((ctx->cs_fabric_id & ctx->socket_id_mask) - >> socket_id_shift) << sock_id_bit; + mask = (1 << ctx->intlv_num_sockets) - 1; + + ctx->cs_id |= calc_level_bits(ctx->cs_fabric_id, ctx->socket_id_mask, + socket_id_shift, mask, num_intlv_bits); } return 0; -- 2.25.1