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Mon, 2 Aug 2021 12:58:46 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; linux.intel.com; dkim=none (message not signed) header.d=none; linux.intel.com; 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 CO1NAM11FT038.mail.protection.outlook.com (10.13.174.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.4373.18 via Frontend Transport; Mon, 2 Aug 2021 12:58:45 +0000 Received: from sanjuamdntb2.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 15.1.2242.12; Mon, 2 Aug 2021 07:58:42 -0500 From: Sanjay R Mehta To: , , , , CC: , , , Sanjay R Mehta Subject: [PATCH 2/4] thunderbolt: Handle INTR when Disable ISR auto clear bit set Date: Mon, 2 Aug 2021 07:58:18 -0500 Message-ID: <1627909100-83338-3-git-send-email-Sanju.Mehta@amd.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1627909100-83338-1-git-send-email-Sanju.Mehta@amd.com> References: <1627909100-83338-1-git-send-email-Sanju.Mehta@amd.com> MIME-Version: 1.0 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: 2403fd50-9f82-415e-73e7-08d955b54397 X-MS-TrafficTypeDiagnostic: CY4PR12MB1398: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:1824; 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CAT:NONE; SFS:(4636009)(346002)(136003)(39860400002)(396003)(376002)(46966006)(36840700001)(86362001)(47076005)(336012)(70206006)(8936002)(36860700001)(8676002)(16526019)(186003)(70586007)(26005)(6666004)(83380400001)(36756003)(82310400003)(2906002)(316002)(426003)(2616005)(82740400003)(4326008)(356005)(5660300002)(81166007)(54906003)(478600001)(110136005)(7696005)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Aug 2021 12:58:45.9417 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 2403fd50-9f82-415e-73e7-08d955b54397 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: CO1NAM11FT038.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR12MB1398 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Sanjay R Mehta when the "Disable ISR Auto-Clear" bit is set, the Tx/Rx ring interrupt status is not cleared. Hence handling it by setting the "Interrupt status clear" register to clear the corresponding Tx/Rx ring interrupt. Signed-off-by: Basavaraj Natikar Signed-off-by: Sanjay R Mehta --- drivers/thunderbolt/nhi.c | 26 +++++++++++++++++++++++++- include/linux/thunderbolt.h | 1 + 2 files changed, 26 insertions(+), 1 deletion(-) diff --git a/drivers/thunderbolt/nhi.c b/drivers/thunderbolt/nhi.c index d7d9c4b..63bbabf 100644 --- a/drivers/thunderbolt/nhi.c +++ b/drivers/thunderbolt/nhi.c @@ -74,7 +74,11 @@ static void ring_interrupt_active(struct tb_ring *ring, bool active) if (!(misc & REG_DMA_MISC_INT_AUTO_CLEAR)) { misc |= REG_DMA_MISC_INT_AUTO_CLEAR; iowrite32(misc, ring->nhi->iobase + REG_DMA_MISC); - } + misc = ioread32(ring->nhi->iobase + REG_DMA_MISC); + if (misc & REG_DMA_MISC_INT_AUTO_CLEAR) + ring->nhi->is_intr_autoclr = true; + } else + ring->nhi->is_intr_autoclr = true; ivr_base = ring->nhi->iobase + REG_INT_VEC_ALLOC_BASE; step = index / REG_INT_VEC_ALLOC_REGS * REG_INT_VEC_ALLOC_BITS; @@ -377,11 +381,31 @@ void tb_ring_poll_complete(struct tb_ring *ring) } EXPORT_SYMBOL_GPL(tb_ring_poll_complete); +static void check_and_clear_intr_status(struct tb_ring *ring, int int_pos) +{ + u32 value; + + if (!ring->nhi->is_intr_autoclr) { + value = ioread32(ring->nhi->iobase + + REG_RING_NOTIFY_BASE + + 4 * (int_pos / 32)); + iowrite32(value, ring->nhi->iobase + + (REG_RING_NOTIFY_BASE + 8) + + 4 * (int_pos / 32)); + } +} + static irqreturn_t ring_msix(int irq, void *data) { struct tb_ring *ring = data; spin_lock(&ring->nhi->lock); + + if (ring->is_tx) + check_and_clear_intr_status(ring, 0); + else + check_and_clear_intr_status(ring, ring->nhi->hop_count); + spin_lock(&ring->lock); __ring_interrupt(ring); spin_unlock(&ring->lock); diff --git a/include/linux/thunderbolt.h b/include/linux/thunderbolt.h index e7c96c3..bbe7c7e 100644 --- a/include/linux/thunderbolt.h +++ b/include/linux/thunderbolt.h @@ -478,6 +478,7 @@ struct tb_nhi { struct tb_ring **rx_rings; struct ida msix_ida; bool going_away; + bool is_intr_autoclr; struct work_struct interrupt_work; u32 hop_count; }; From patchwork Mon Aug 2 12:58:20 2021 Content-Type: text/plain; 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CAT:NONE; SFS:(4636009)(39860400002)(136003)(346002)(396003)(376002)(36840700001)(46966006)(47076005)(82740400003)(110136005)(7696005)(83380400001)(478600001)(2906002)(82310400003)(54906003)(5660300002)(70206006)(4326008)(70586007)(8676002)(8936002)(426003)(26005)(186003)(16526019)(356005)(336012)(36860700001)(36756003)(2616005)(66574015)(81166007)(316002)(86362001)(6666004)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Aug 2021 12:58:56.2568 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: fc6ff003-13ac-44cc-1abc-08d955b549bd 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: CO1NAM11FT044.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN8PR12MB3233 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Sanjay R Mehta In tb_switch_default_link_ports(), while linking of ports, only odd-numbered ports (1,3,5..) are considered and even-numbered ports are not considered. AMD host router has lane adapters at 2 & 3 and link ports at adapter-2 is not considered due to which lane bonding gets disabled. Hence added a fix such that all ports are considered during linking of ports. Fixes: 0d46c08d1ed4 ("thunderbolt: Add default linking between lane adapters if not provided by DROM") Signed-off-by: Basavaraj Natikar Signed-off-by: Sanjay R Mehta --- drivers/thunderbolt/switch.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index effbfe4..8b2fe67 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -2456,7 +2456,7 @@ static void tb_switch_default_link_ports(struct tb_switch *sw) { int i; - for (i = 1; i <= sw->config.max_port_number; i += 2) { + for (i = 1; i <= sw->config.max_port_number; i++) { struct tb_port *port = &sw->ports[i]; struct tb_port *subordinate;