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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 CO1NAM11FT063.mail.protection.outlook.com (10.13.175.37) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.4930.15 via Frontend Transport; Thu, 27 Jan 2022 20:41:51 +0000 Received: from yaz-ethanolx.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 15.1.2375.18; Thu, 27 Jan 2022 14:41:45 -0600 From: Yazen Ghannam To: CC: , , , , , , , Yazen Ghannam Subject: [PATCH v4 21/24] EDAC/amd64: Update CS ID calculation to match reference code Date: Thu, 27 Jan 2022 20:41:12 +0000 Message-ID: <20220127204115.384161-22-yazen.ghannam@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220127204115.384161-1-yazen.ghannam@amd.com> References: <20220127204115.384161-1-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: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 39659b0a-4336-44cd-2dbe-08d9e1d572a0 X-MS-TrafficTypeDiagnostic: BYAPR12MB5704:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6790; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Jan 2022 20:41:51.5144 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 39659b0a-4336-44cd-2dbe-08d9e1d572a0 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: CO1NAM11FT063.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR12MB5704 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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://lore.kernel.org/r/20211028175728.121452-27-yazen.ghannam@amd.com v3->v4: * Remove leading whitespace in function pointers. 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 ac7919010063..e293aefd486e 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -1092,6 +1092,8 @@ 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); @@ -1213,6 +1215,16 @@ 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, @@ -1222,6 +1234,8 @@ 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; @@ -1310,38 +1324,42 @@ 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