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Fri, 12 Jun 2020 17:49:29 -0500 Received: from DLEE101.ent.ti.com (157.170.170.31) by DLEE114.ent.ti.com (157.170.170.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3; Fri, 12 Jun 2020 17:49:29 -0500 Received: from lelv0326.itg.ti.com (10.180.67.84) by DLEE101.ent.ti.com (157.170.170.31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3 via Frontend Transport; Fri, 12 Jun 2020 17:49:28 -0500 Received: from fllv0103.dal.design.ti.com (fllv0103.dal.design.ti.com [10.247.120.73]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id 05CMnSlx089805; Fri, 12 Jun 2020 17:49:28 -0500 Received: from localhost ([10.250.48.148]) by fllv0103.dal.design.ti.com (8.14.7/8.14.7) with ESMTP id 05CMnSlF062169; Fri, 12 Jun 2020 17:49:28 -0500 From: Suman Anna To: Bjorn Andersson , Rob Herring , Mathieu Poirier Subject: [PATCH v3 2/6] remoteproc: k3: Add TI-SCI processor control helper functions Date: Fri, 12 Jun 2020 17:49:10 -0500 Message-ID: <20200612224914.7634-3-s-anna@ti.com> X-Mailer: git-send-email 2.26.0 In-Reply-To: <20200612224914.7634-1-s-anna@ti.com> References: <20200612224914.7634-1-s-anna@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200612_154933_004530_9C9EE04A X-CRM114-Status: GOOD ( 15.67 ) X-Spam-Score: -2.5 (--) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-2.5 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [198.47.19.141 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Grzegorz Jaszczyk , Lokesh Vutla , linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, Suman Anna , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Texas Instruments' K3 generation SoCs have specific modules/register spaces used for configuring the various aspects of a remote processor. These include power, reset, boot vector and other configuration features specific to each compute processor present on the SoC. These registers are managed by the System Controller such as DMSC on K3 AM65x SoCs. The Texas Instrument's System Control Interface (TI-SCI) Message Protocol is used to communicate to the System Controller from various compute processors to invoke specific services provided by the firmware running on the System Controller. Add a common processor control interface header file that can be used by multiple remoteproc drivers. The helper functions within this header file abstract the various TI SCI protocol ops for the remoteproc drivers, and allow them to request the System Controller to be able to program and manage various remote processors on the SoC. The remoteproc drivers are expected to manage the life-cycle of their ti_sci_proc_dev local structures. Signed-off-by: Suman Anna Reviewed-by: Mathieu Poirier --- v3: New to this series, but the patch is identical to the one from the K3 R5F series posted previously, with patch title adjusted https://patchwork.kernel.org/patch/11456379/ drivers/remoteproc/ti_sci_proc.h | 102 +++++++++++++++++++++++++++++++ 1 file changed, 102 insertions(+) create mode 100644 drivers/remoteproc/ti_sci_proc.h diff --git a/drivers/remoteproc/ti_sci_proc.h b/drivers/remoteproc/ti_sci_proc.h new file mode 100644 index 000000000000..e42d8015b8e7 --- /dev/null +++ b/drivers/remoteproc/ti_sci_proc.h @@ -0,0 +1,102 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Texas Instruments TI-SCI Processor Controller Helper Functions + * + * Copyright (C) 2018-2020 Texas Instruments Incorporated - http://www.ti.com/ + * Suman Anna + */ + +#ifndef REMOTEPROC_TI_SCI_PROC_H +#define REMOTEPROC_TI_SCI_PROC_H + +/** + * struct ti_sci_proc - structure representing a processor control client + * @sci: cached TI-SCI protocol handle + * @ops: cached TI-SCI proc ops + * @dev: cached client device pointer + * @proc_id: processor id for the consumer remoteproc device + * @host_id: host id to pass the control over for this consumer remoteproc + * device + */ +struct ti_sci_proc { + const struct ti_sci_handle *sci; + const struct ti_sci_proc_ops *ops; + struct device *dev; + u8 proc_id; + u8 host_id; +}; + +static inline int ti_sci_proc_request(struct ti_sci_proc *tsp) +{ + int ret; + + ret = tsp->ops->request(tsp->sci, tsp->proc_id); + if (ret) + dev_err(tsp->dev, "ti-sci processor request failed: %d\n", + ret); + return ret; +} + +static inline int ti_sci_proc_release(struct ti_sci_proc *tsp) +{ + int ret; + + ret = tsp->ops->release(tsp->sci, tsp->proc_id); + if (ret) + dev_err(tsp->dev, "ti-sci processor release failed: %d\n", + ret); + return ret; +} + +static inline int ti_sci_proc_handover(struct ti_sci_proc *tsp) +{ + int ret; + + ret = tsp->ops->handover(tsp->sci, tsp->proc_id, tsp->host_id); + if (ret) + dev_err(tsp->dev, "ti-sci processor handover of %d to %d failed: %d\n", + tsp->proc_id, tsp->host_id, ret); + return ret; +} + +static inline int ti_sci_proc_set_config(struct ti_sci_proc *tsp, + u64 boot_vector, + u32 cfg_set, u32 cfg_clr) +{ + int ret; + + ret = tsp->ops->set_config(tsp->sci, tsp->proc_id, boot_vector, + cfg_set, cfg_clr); + if (ret) + dev_err(tsp->dev, "ti-sci processor set_config failed: %d\n", + ret); + return ret; +} + +static inline int ti_sci_proc_set_control(struct ti_sci_proc *tsp, + u32 ctrl_set, u32 ctrl_clr) +{ + int ret; + + ret = tsp->ops->set_control(tsp->sci, tsp->proc_id, ctrl_set, ctrl_clr); + if (ret) + dev_err(tsp->dev, "ti-sci processor set_control failed: %d\n", + ret); + return ret; +} + +static inline int ti_sci_proc_get_status(struct ti_sci_proc *tsp, + u64 *boot_vector, u32 *cfg_flags, + u32 *ctrl_flags, u32 *status_flags) +{ + int ret; + + ret = tsp->ops->get_status(tsp->sci, tsp->proc_id, boot_vector, + cfg_flags, ctrl_flags, status_flags); + if (ret) + dev_err(tsp->dev, "ti-sci processor get_status failed: %d\n", + ret); + return ret; +} + +#endif /* REMOTEPROC_TI_SCI_PROC_H */