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Thu, 3 Jul 2025 03:38:58 -0700 From: Sumit Gupta To: , , , , , , , CC: , , Subject: [PATCH v2 5/8] soc: tegra: cbb: support hw lookup to get timed out target address Date: Thu, 3 Jul 2025 16:08:26 +0530 Message-ID: <20250703103829.1721024-6-sumitg@nvidia.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250703103829.1721024-1-sumitg@nvidia.com> References: <20250703103829.1721024-1-sumitg@nvidia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NVConfidentiality: public Content-Transfer-Encoding: quoted-printable X-NV-OnPremToCloud: AnonymousSubmission X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN1PEPF0002636B:EE_|LV3PR12MB9144:EE_ X-MS-Office365-Filtering-Correlation-Id: ae52d5af-05b4-471a-7d14-08ddba1dd935 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|376014|1800799024|36860700013; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?rpagjnTY+6FfdeReGOuZ4veRHPUjrnBiuqkEd7emDph/5A27vCjgBe3QibKb?= =?us-ascii?Q?JiFcswd9RxoA8NaIl8FRLWxGB6wRo2iPpRJ3UTJQyNyawcmP3HxLPE0NDJCi?= =?us-ascii?Q?c7S83aD21ZQLkY+AxHQ7UYRqPkhO2SmcnZGZRb/Wuk7ELhn+JtLcuRrxxBEf?= =?us-ascii?Q?0vUJ6sfP6yrtEM1joWZ/d7ahL+EWcSZCoV+CcZLipuQbE2T7zgkT3K7l4wjA?= =?us-ascii?Q?VzDB33i/AcXS9orcV9QTqHGuWW+Jew/v5KIKgeNYz2xVRAITbjupAYHR4kmG?= =?us-ascii?Q?bCcuUOWCgx5Ff//wt6raLNqEd7XVi3kXrG4GO40ZY8WNuGOR79d3IJQUUBGx?= =?us-ascii?Q?XtDY8PBsNUfKDwPYsiDHp46fkm6b6skrVomP0rdTlx/KmrzIfCUsEUgSXEmx?= =?us-ascii?Q?cxyhl1ox3LQivr6jlpSWuUgeLlvhhOWdc388TYVnpLMADIyETqVyVwLMeCqr?= =?us-ascii?Q?vpXlDcciF4nzHOdPI7fIOqtd5afUme5+aO52WzPPbmKMfOssWczcLWKXL9mV?= =?us-ascii?Q?2uWXj3h8lTr1bYn8mntMiMY0ANoLEW98fjDC7LJYsuNmxKt0Hba9KWat1iBu?= =?us-ascii?Q?MwW2NDJhbRynJIFEgGuEALV/2iYf9zgee5+pfCpR73ltMkYUEL7XU+rh/18j?= =?us-ascii?Q?X5Twc1S1hTk4DCvry07O+SCpnhJEtu3ffihcNnvs/+SGAC2W4rv3UlBDjBQG?= =?us-ascii?Q?xeSZ9EMEH6pFbBCzO2exP/yfio0N3FFblZBx9qWNxFIq5mAlMytGHkxrrmU/?= =?us-ascii?Q?X6Eowjjdx1b9uZEcdVAtg8nyfP9UPdjrznBvSN/esRt8HUzPkJlZgGWRUTmf?= =?us-ascii?Q?L/1ebZ4gJTkCMSd3NquxFLltkRdZ498VXe3F9FC/rs6vKgqTNiIPjOaW4USk?= =?us-ascii?Q?0D/oEov5aAmMhL+kJtE7wjcCw/TjaN6mzqwQ2hbkmrNi3zkiNML8ltmb4wpk?= =?us-ascii?Q?+OZHRihOmLdWwJ6ouwZzWvidJvQpTXw+qr8uEGnkVr0ePWwg96rXAWxmlXNw?= =?us-ascii?Q?MFqpshwnnxM+RxahmcA59cczpEZth5aeIRdcHB7D/sQLU+vC10K+gUTjn+gf?= =?us-ascii?Q?N+G/GQQSnJxpv13PWoe9LRqr+3dvF5JNuTLPwqPXtasEzCvalX9UyEN7QrVj?= =?us-ascii?Q?bhOBt/Ygd7t6MvHYDw9nq8iGhgTHa2A9CZz7B6jf96IPAZGociISuCHq+uxL?= =?us-ascii?Q?nwWTpx+vX1AB5ilT7DhApPoXFox9burLQQEdeyrMmHCjiZWODMmcnpczD7ei?= =?us-ascii?Q?6JdfhDb72FXzRWlfj7vpkyx6dC0eNC9OA/QcilQ1khMXvsgJrb2t4kEKQJis?= =?us-ascii?Q?0oGKFtIM3YaJbej/q2giD+zc6V+KkfmxUrJKrBbLkcQdJYQM3C8x1du5UuoG?= =?us-ascii?Q?ORenqrY27TIFTnCd6EYkmTy1QNNUZQARqmKfi8yapF2rCSffqznyMqEMV+G4?= =?us-ascii?Q?7q8ydlF4iD/i6zASTCE8FZtz+7eVQtYfun38kcEghmKQsGuASrxpmwBl/3+D?= =?us-ascii?Q?5JNCnB3o//unq4F4B5DeZ7O7gqWlVKXMFeVh?= X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230040)(82310400026)(376014)(1800799024)(36860700013);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 03 Jul 2025 10:39:11.5970 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ae52d5af-05b4-471a-7d14-08ddba1dd935 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SN1PEPF0002636B.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV3PR12MB9144 Content-Type: text/plain; charset="utf-8" Add support for hardware based lookup to get address of timed out target node. This features is added in upcoming SoCs and avoids need of creating per fabric target_map tables in driver. Signed-off-by: Sumit Gupta --- drivers/soc/tegra/cbb/tegra234-cbb.c | 41 ++++++++++++++++++++++++---- 1 file changed, 36 insertions(+), 5 deletions(-) diff --git a/drivers/soc/tegra/cbb/tegra234-cbb.c b/drivers/soc/tegra/cbb/t= egra234-cbb.c index 10f57f17fee8d..aab0cd85dea5e 100644 --- a/drivers/soc/tegra/cbb/tegra234-cbb.c +++ b/drivers/soc/tegra/cbb/tegra234-cbb.c @@ -30,13 +30,17 @@ #define FABRIC_EN_CFG_ADDR_LOW_0 0x80 #define FABRIC_EN_CFG_ADDR_HI_0 0x84 =20 +#define FABRIC_EN_CFG_TARGET_NODE_ADDR_INDEX_0_0 0x100 +#define FABRIC_EN_CFG_TARGET_NODE_ADDR_LOW_0 0x140 +#define FABRIC_EN_CFG_TARGET_NODE_ADDR_HI_0 0x144 + #define FABRIC_MN_INITIATOR_ERR_EN_0 0x200 #define FABRIC_MN_INITIATOR_ERR_FORCE_0 0x204 -#define FABRIC_MN_INITIATOR_ERR_STATUS_0 0x208 -#define FABRIC_MN_INITIATOR_ERR_OVERFLOW_STATUS_0 0x20c +#define FABRIC_MN_INITIATOR_ERR_STATUS_0 0x208 +#define FABRIC_MN_INITIATOR_ERR_OVERFLOW_STATUS_0 0x20c =20 #define FABRIC_MN_INITIATOR_LOG_ERR_STATUS_0 0x300 -#define FABRIC_MN_INITIATOR_LOG_ADDR_LOW_0 0x304 +#define FABRIC_MN_INITIATOR_LOG_ADDR_LOW_0 0x304 #define FABRIC_MN_INITIATOR_LOG_ADDR_HIGH_0 0x308 #define FABRIC_MN_INITIATOR_LOG_ATTRIBUTES0_0 0x30c #define FABRIC_MN_INITIATOR_LOG_ATTRIBUTES1_0 0x310 @@ -320,6 +324,23 @@ static void tegra234_sw_lookup_target_timeout(struct s= eq_file *file, struct tegr } } =20 +static void tegra234_hw_lookup_target_timeout(struct seq_file *file, struc= t tegra234_cbb *cbb, + u8 target_id, u8 fab_id) +{ + unsigned int notifier =3D cbb->fabric->notifier_offset; + u32 hi, lo; + u64 addr; + + writel(target_id, cbb->regs + notifier + FABRIC_EN_CFG_TARGET_NODE_ADDR_I= NDEX_0_0); + + hi =3D readl(cbb->regs + notifier + FABRIC_EN_CFG_TARGET_NODE_ADDR_HI_0); + lo =3D readl(cbb->regs + notifier + FABRIC_EN_CFG_TARGET_NODE_ADDR_LOW_0); + + addr =3D (u64)hi << 32 | lo; + + tegra_cbb_print_err(file, "\t Target Node Addr : %#llx\n", addr); +} + static void tegra234_cbb_print_error(struct seq_file *file, struct tegra23= 4_cbb *cbb, u32 status, u32 overflow) { @@ -445,8 +466,18 @@ static void print_errlog_err(struct seq_file *file, st= ruct tegra234_cbb *cbb) if (!cbb->fabric->fab_list[fab_id].is_lookup) return; =20 - if (!strcmp(cbb->fabric->errors[cbb->type].code, "TIMEOUT_ERR")) - tegra234_sw_lookup_target_timeout(file, cbb, target_id, fab_id); + /* + * If is_lookup field is set in fabric_lookup table of soc data, it + * means that address lookup of target is supported for Timeout errors. + * If is_lookup is set and the target_map is not populated making + * max_targets as zero, then it means HW lookup is to be performed. + */ + if (!strcmp(cbb->fabric->errors[cbb->type].code, "TIMEOUT_ERR")) { + if (cbb->fabric->fab_list[fab_id].max_targets) + tegra234_sw_lookup_target_timeout(file, cbb, target_id, fab_id); + else + tegra234_hw_lookup_target_timeout(file, cbb, target_id, fab_id); + } =20 return; } --=20 2.34.1