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Sun, 29 Nov 2020 23:48:31 -0800 Envelope-to: michal.simek@xilinx.com, derek.kiernan@xilinx.com, dragan.cvetic@xilinx.com, rajan.vaja@xilinx.com, tejas.patel@xilinx.com, manish.narani@xilinx.com, ravi.patel@xilinx.com, izhar.ameer.shaikh@xilinx.com, wendy.liang@xilinx.com, robh+dt@kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, sumit.semwal@linaro.org, christian.koenig@amd.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org Received: from [172.19.2.167] (port=48528 helo=xsjjliang50.xilinx.com) by smtp.xilinx.com with esmtp (Exim 4.90) (envelope-from ) id 1kjdvD-0006Pm-4f; Sun, 29 Nov 2020 23:48:31 -0800 From: Wendy Liang To: , , , , , , , , , , , CC: , , , , , Izhar Ameer Shaikh , Wendy Liang Subject: [PATCH v3 8/9] firmware: xilinx: Add IOCTL support for AIE ISR Clear Date: Sun, 29 Nov 2020 23:48:24 -0800 Message-ID: <1606722505-16194-9-git-send-email-wendy.liang@xilinx.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1606722505-16194-1-git-send-email-wendy.liang@xilinx.com> References: <1606722505-16194-1-git-send-email-wendy.liang@xilinx.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 82d49edd-55f1-4d09-9659-08d895045d61 X-MS-TrafficTypeDiagnostic: BN7PR02MB3971: X-Microsoft-Antispam-PRVS: X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-MS-Oob-TLC-OOBClassifiers: OLM:7219; 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DIR:OUT; SFP:1101; X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Nov 2020 07:48:45.1349 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 82d49edd-55f1-4d09-9659-08d895045d61 X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c; Ip=[149.199.62.198]; Helo=[xsj-pvapexch02.xlnx.xilinx.com] X-MS-Exchange-CrossTenant-AuthSource: CY1NAM02FT037.eop-nam02.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN7PR02MB3971 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Izhar Ameer Shaikh Latching of AIE NPI Interrupts is present in Versal ES1 Silicon Rev, however it has been removed from ES2 rev. As a result on ES1, in order to use the interrupt, a client needs to request PMC to clear/ack the interrupt. Provide an EEMI IOCTL to serve the same purpose. Note that, this will only be applicable for ES1 rev. For ES2 and other non-silicon platforms, this call will essentially be a NOP in the firmware. Signed-off-by: Izhar Ameer Shaikh Signed-off-by: Wendy Liang --- drivers/firmware/xilinx/zynqmp.c | 14 ++++++++++++++ include/linux/firmware/xlnx-zynqmp.h | 8 ++++++++ 2 files changed, 22 insertions(+) diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index d08ac82..23e58cc 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -729,6 +729,20 @@ int zynqmp_pm_set_boot_health_status(u32 value) } /** + * zynqmp_pm_clear_aie_npi_isr - Clear AI engine NPI interrupt status register + * @node: AI engine node id + * @irq_mask: Mask of AI engine NPI interrupt bit to clear + * + * Return: Returns status, either success or error+reason + */ +int zynqmp_pm_clear_aie_npi_isr(u32 node, u32 irq_mask) +{ + return zynqmp_pm_invoke_fn(PM_IOCTL, node, IOCTL_AIE_ISR_CLEAR, + irq_mask, 0, NULL); +} +EXPORT_SYMBOL_GPL(zynqmp_pm_clear_aie_npi_isr); + +/** * zynqmp_pm_reset_assert - Request setting of reset (1 - assert, 0 - release) * @reset: Reset to be configured * @assert_flag: Flag stating should reset be asserted (1) or diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h index 83ac9ec..defa4ea 100644 --- a/include/linux/firmware/xlnx-zynqmp.h +++ b/include/linux/firmware/xlnx-zynqmp.h @@ -114,6 +114,8 @@ enum pm_ioctl_id { IOCTL_READ_PGGS = 15, /* Set healthy bit value */ IOCTL_SET_BOOT_HEALTH_STATUS = 17, + /* AI engine NPI ISR clear */ + IOCTL_AIE_ISR_CLEAR = 24, }; enum pm_query_id { @@ -355,6 +357,7 @@ int zynqmp_pm_write_pggs(u32 index, u32 value); int zynqmp_pm_read_pggs(u32 index, u32 *value); int zynqmp_pm_system_shutdown(const u32 type, const u32 subtype); int zynqmp_pm_set_boot_health_status(u32 value); +int zynqmp_pm_clear_aie_npi_isr(u32 node, u32 irq_mask); #else static inline struct zynqmp_eemi_ops *zynqmp_pm_get_eemi_ops(void) { @@ -505,6 +508,11 @@ static inline int zynqmp_pm_set_boot_health_status(u32 value) { return -ENODEV; } + +static inline int zynqmp_pm_clear_aie_npi_isr(u32 node, u32 irq_mask) +{ + return -ENODEV; +} #endif #endif /* __FIRMWARE_ZYNQMP_H__ */