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Thu, 13 Aug 2020 13:35:44 -0700 Received: from [10.23.123.104] (helo=localhost) by xsj-pvapsmtp01 with esmtp (Exim 4.63) (envelope-from ) id 1k6Jwu-0008M8-Gi; Thu, 13 Aug 2020 13:35:44 -0700 Date: Thu, 13 Aug 2020 13:35:43 -0700 (PDT) From: Stefano Stabellini X-X-Sender: sstabellini@sstabellini-ThinkPad-T480s To: Ben Levinsky cc: stefanos@xilinx.com, michals@xilinx.com, devicetree@vger.kernel.org, mathieu.poirier@linaro.org, ed.mooring@xilinx.com, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, robh+dt@kernel.org, wendy.liang@xilinx.com, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v8 3/5] firmware: xilinx: Add RPU configuration APIs In-Reply-To: <20200811033213.20088-4-ben.levinsky@xilinx.com> Message-ID: References: <20200811033213.20088-1-ben.levinsky@xilinx.com> <20200811033213.20088-4-ben.levinsky@xilinx.com> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-RCIS-Action: ALLOW X-TM-AS-Product-Ver: IMSS-7.1.0.1224-8.2.0.1013-23620.005 X-TM-AS-User-Approved-Sender: Yes;Yes X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 405f6dad-b673-4422-7cb3-08d83fc87915 X-MS-TrafficTypeDiagnostic: DM6PR02MB6060: X-Microsoft-Antispam-PRVS: X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-MS-Oob-TLC-OOBClassifiers: OLM:2582; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: s39VpgD3HhzRValrhXM0l22B829H0BkK8VdSH3codMJR6KsTLYtK8ohjMFKn16q+8ek1Mol+nkAXW85z20rgq/iKNdMXIsrppZF4NT0N3A39mlSz0R488UuwkXFogwNOI0LW8W58lKzA4ENYpPNkMT5a2nzs91AzKBhmLNCFYpM2X8r/dIlS76hn5fqqXaDCQbSSBwPgolVutvSHXVm8RextI5zZOWpU+JWT8T3NO0ARofN0L3/Jw4C+fdC54/7kDHi8gNuFY0brZv5SkaWJaAqulrFVNf+jS1130EFkzmbIkUUOw4X042GhqFOcDMWLhsC9eYb4gP/e4qgj8N4obUEP51sqtyS5fxcMpSOA/UgRoXlLUS5D+BOLfKeosfP6D8fALt4xB4V/MWTi5kF8fA== X-Forefront-Antispam-Report: CIP:149.199.60.83;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:xsj-pvapsmtpgw01;PTR:unknown-60-83.xilinx.com;CAT:NONE;SFS:(7916004)(136003)(39860400002)(376002)(346002)(396003)(46966005)(4326008)(82740400003)(82310400002)(478600001)(47076004)(26005)(6862004)(186003)(356005)(33716001)(83380400001)(81166007)(44832011)(70586007)(426003)(316002)(6636002)(336012)(70206006)(5660300002)(9686003)(8936002)(9786002)(2906002)(8676002);DIR:OUT;SFP:1101; X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Aug 2020 20:35:53.0335 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 405f6dad-b673-4422-7cb3-08d83fc87915 X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.60.83];Helo=[xsj-pvapsmtpgw01] X-MS-Exchange-CrossTenant-AuthSource: SN1NAM02FT0051.eop-nam02.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR02MB6060 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 10 Aug 2020, Ben Levinsky wrote: > This patch adds APIs to provide access and a configuration interface > to the current power state of a sub-system on Zynqmp sub-system. This doesn't read correctly > Signed-off-by: Ben Levinsky > --- > v3: > - add xilinx-related platform mgmt fn's instead of wrapping around > function pointer in xilinx eemi ops struct > v4: > - add default values for enums > --- > drivers/firmware/xilinx/zynqmp.c | 99 ++++++++++++++++++++++++++++ > include/linux/firmware/xlnx-zynqmp.h | 34 ++++++++++ > 2 files changed, 133 insertions(+) > > diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c > index f1a0bd35deeb..fdd61d258e55 100644 > --- a/drivers/firmware/xilinx/zynqmp.c > +++ b/drivers/firmware/xilinx/zynqmp.c > @@ -846,6 +846,61 @@ int zynqmp_pm_release_node(const u32 node) > } > EXPORT_SYMBOL_GPL(zynqmp_pm_release_node); > > +/** > + * zynqmp_pm_get_rpu_mode() - Get RPU mode > + * @node_id: Node ID of the device > + * @arg1: Argument 1 to requested IOCTL call > + * @arg2: Argument 2 to requested IOCTL call > + * @out: Returned output value > + * > + * Return: RPU mode What kind of output are we expecting? An enum? Which one? > + */ > +int zynqmp_pm_get_rpu_mode(u32 node_id, > + u32 arg1, u32 arg2, u32 *out) > +{ > + return zynqmp_pm_invoke_fn(PM_IOCTL, node_id, > + IOCTL_GET_RPU_OPER_MODE, 0, 0, out); > +} > +EXPORT_SYMBOL_GPL(zynqmp_pm_get_rpu_mode); > + > +/** > + * zynqmp_pm_set_rpu_mode() - Set RPU mode > + * @node_id: Node ID of the device > + * @ioctl_id: ID of the requested IOCTL > + * @arg2: Argument 2 to requested IOCTL call > + * @out: Returned output value > + * > + * This function is used to set RPU mode. > + * > + * Return: Returns status, either success or error+reason > + */ > +int zynqmp_pm_set_rpu_mode(u32 node_id, > + u32 arg1, u32 arg2, u32 *out) > +{ > + return zynqmp_pm_invoke_fn(PM_IOCTL, node_id, > + IOCTL_SET_RPU_OPER_MODE, 0, 0, out); > +} > +EXPORT_SYMBOL_GPL(zynqmp_pm_set_rpu_mode); > + > +/** > + * zynqmp_pm_tcm_comb_config - configure TCM > + * @node_id: Node ID of the device > + * @arg1: Argument 1 to requested IOCTL call > + * @arg2: Argument 2 to requested IOCTL call > + * @out: Returned output value Same question on the type of the output value > + * This function is used to set RPU mode. > + * > + * Return: Returns status, either success or error+reason > + */ > +int zynqmp_pm_set_tcm_config(u32 node_id, > + u32 arg1, u32 arg2, u32 *out) > +{ > + return zynqmp_pm_invoke_fn(PM_IOCTL, node_id, > + IOCTL_TCM_COMB_CONFIG, 0, 0, out); > +} > +EXPORT_SYMBOL_GPL(zynqmp_pm_set_tcm_config); > + > /** > * zynqmp_pm_force_powerdown - PM call to request for another PU or subsystem to > * be powered down forcefully > @@ -881,6 +936,50 @@ int zynqmp_pm_request_wakeup(const u32 node, > } > EXPORT_SYMBOL_GPL(zynqmp_pm_request_wakeup); > > +/** > + * zynqmp_pm_get_node_status - PM call to request a node's current power state > + * @node: ID of the component or sub-system in question > + * @status: Current operating state of the requested node > + * @requirements: Current requirements asserted on the node, > + * used for slave nodes only. > + * @usage: Usage information, used for slave nodes only: > + * PM_USAGE_NO_MASTER - No master is currently using > + * the node > + * PM_USAGE_CURRENT_MASTER - Only requesting master is > + * currently using the node > + * PM_USAGE_OTHER_MASTER - Only other masters are > + * currently using the node > + * PM_USAGE_BOTH_MASTERS - Both the current and at least > + * one other master is currently > + * using the node > + * > + * Return: status, either success or error+reason Same question on status > + */ > +int zynqmp_pm_get_node_status(const u32 node, > + u32 *status, u32 *requirements, > + u32 *usage) > + > +{ > + u32 ret_payload[PAYLOAD_ARG_CNT]; > + int ret; > + > + if (!status) > + return -EINVAL; > + > + ret = zynqmp_pm_invoke_fn(PM_GET_NODE_STATUS, node, 0, 0, 0, > + ret_payload); > + if (ret_payload[0] == XST_PM_SUCCESS) { > + *status = ret_payload[1]; > + if (requirements) > + *requirements = ret_payload[2]; > + if (usage) > + *usage = ret_payload[3]; > + } > + > + return ret; > +} > +EXPORT_SYMBOL_GPL(zynqmp_pm_get_node_status); > + > /** > * zynqmp_pm_set_requirement() - PM call to set requirement for PM slaves > * @node: Node ID of the slave > diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h > index 4d83a7d69c4c..0caca9e2223a 100644 > --- a/include/linux/firmware/xlnx-zynqmp.h > +++ b/include/linux/firmware/xlnx-zynqmp.h > @@ -64,6 +64,7 @@ > > enum pm_api_id { > PM_GET_API_VERSION = 1, > + PM_GET_NODE_STATUS = 3, > PM_FORCE_POWERDOWN = 8, > PM_REQUEST_WAKEUP = 10, > PM_SYSTEM_SHUTDOWN = 12, > @@ -384,6 +385,14 @@ int zynqmp_pm_request_wakeup(const u32 node, > const bool set_addr, > const u64 address, > const enum zynqmp_pm_request_ack ack); > +int zynqmp_pm_get_node_status(const u32 node, u32 *status, > + u32 *requirements, u32 *usage); > +int zynqmp_pm_get_rpu_mode(u32 node_id, > + u32 arg1, u32 arg2, u32 *out); > +int zynqmp_pm_set_rpu_mode(u32 node_id, > + u32 arg1, u32 arg2, u32 *out); > +int zynqmp_pm_set_tcm_config(u32 node_id, > + u32 arg1, u32 arg2, u32 *out); > #else > static inline struct zynqmp_eemi_ops *zynqmp_pm_get_eemi_ops(void) > { > @@ -548,6 +557,31 @@ static inline int zynqmp_pm_request_wakeup(const u32 node, > { > return -ENODEV; > } > + > +static inline int zynqmp_pm_get_node_status(const u32 node, > + u32 *status, u32 *requirements, > + u32 *usage) > +{ > + return -ENODEV; > +} > + > +static inline int zynqmp_pm_get_rpu_mode(u32 node_id, > + u32 arg1, u32 arg2, u32 *out) > +{ > + return -ENODEV; > +} > + > +static inline int zynqmp_pm_set_rpu_mode(u32 node_id, > + u32 arg1, u32 arg2, u32 *out) > +{ > + return -ENODEV; > +} > + > +static inline int zynqmp_pm_set_tcm_config(u32 node_id, > + u32 arg1, u32 arg2, u32 *out) > +{ > + return -ENODEV; > +} > #endif > > #endif /* __FIRMWARE_ZYNQMP_H__ */