From patchwork Mon Mar 13 11:11:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: MD Danish Anwar X-Patchwork-Id: 13172248 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BA156C6FD19 for ; Mon, 13 Mar 2023 11:12:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230309AbjCMLMQ (ORCPT ); Mon, 13 Mar 2023 07:12:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51882 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230301AbjCMLMF (ORCPT ); Mon, 13 Mar 2023 07:12:05 -0400 Received: from fllv0016.ext.ti.com (fllv0016.ext.ti.com [198.47.19.142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 01C005DEFE; Mon, 13 Mar 2023 04:11:37 -0700 (PDT) Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 32DBBUnG050656; Mon, 13 Mar 2023 06:11:30 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1678705890; bh=CNVstWwtC3lglBu8gd0yBT2cxjD94sA0qocjzHdzcJc=; h=From:To:CC:Subject:Date; b=VPC6H4wnPHml2m38rkMZjt0yBzWsZRAWmq86TX93X5/eI0N06JRkdcMymD9y7rTKZ zPKQzIyWyJK83tKle5w2FQ5s/5KsJ+L19XzXMj7y067iPXOrdxceTpXGIeAbeOkFYH q7QUT42uaf7XmEpIawAuhHuOzKqHM2S+nEaqtx8s= Received: from DLEE113.ent.ti.com (dlee113.ent.ti.com [157.170.170.24]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 32DBBU0S123991 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 13 Mar 2023 06:11:30 -0500 Received: from DLEE112.ent.ti.com (157.170.170.23) by DLEE113.ent.ti.com (157.170.170.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16; Mon, 13 Mar 2023 06:11:30 -0500 Received: from lelv0326.itg.ti.com (10.180.67.84) by DLEE112.ent.ti.com (157.170.170.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16 via Frontend Transport; Mon, 13 Mar 2023 06:11:30 -0500 Received: from lelv0854.itg.ti.com (lelv0854.itg.ti.com [10.181.64.140]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id 32DBBUGK016768; Mon, 13 Mar 2023 06:11:30 -0500 Received: from localhost (a0501179-pc.dhcp.ti.com [10.24.69.114]) by lelv0854.itg.ti.com (8.14.7/8.14.7) with ESMTP id 32DBBTim032256; Mon, 13 Mar 2023 06:11:29 -0500 From: MD Danish Anwar To: "Andrew F. Davis" , Suman Anna , Roger Quadros , Vignesh Raghavendra , MD Danish Anwar , Mathieu Poirier , Bjorn Andersson , Santosh Shilimkar , Nishanth Menon CC: , , , , , , Subject: [PATCH v4 0/5] Introduce PRU platform consumer API Date: Mon, 13 Mar 2023 16:41:22 +0530 Message-ID: <20230313111127.1229187-1-danishanwar@ti.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hi All, The Programmable Real-Time Unit and Industrial Communication Subsystem (PRU-ICSS or simply PRUSS) on various TI SoCs consists of dual 32-bit RISC cores (Programmable Real-Time Units, or PRUs) for program execution. There are 3 foundation components for TI PRUSS subsystem: the PRUSS platform driver, the PRUSS INTC driver and the PRUSS remoteproc driver. All of them have already been merged and can be found under: 1) drivers/soc/ti/pruss.c Documentation/devicetree/bindings/soc/ti/ti,pruss.yaml 2) drivers/irqchip/irq-pruss-intc.c Documentation/devicetree/bindings/interrupt-controller/ti,pruss-intc.yaml 3) drivers/remoteproc/pru_rproc.c Documentation/devicetree/bindings/remoteproc/ti,pru-consumer.yaml The programmable nature of the PRUs provide flexibility to implement custom peripheral interfaces, fast real-time responses, or specialized data handling. Example of a PRU consumer drivers will be: - Software UART over PRUSS - PRU-ICSS Ethernet EMAC In order to make usage of common PRU resources and allow the consumer drivers to configure the PRU hardware for specific usage the PRU API is introduced. This is the v4 of the old patch series[1]. This doesn't have any functional changes, the old series has been rebased on linux-next (tag: next-20230306). Changes from v3 [1] to v4: *) Added my SoB tags in all patches as earlier SoB tags were missing in few patches. *) Added Roger's RB tags in 3 patches. *) Addressed Roger's comment in patch 4/5 of this series. Added check for invalid GPI mode in pruss_cfg_gpimode() API. *) Removed patch [4] from this series as that patch is no longer required. *) Made pruss_cfg_read() and pruss_cfg_update() APIs internal to pruss.c by removing EXPORT_SYMBOL_GPL and making them static. Now these APIs are internal to pruss.c and PRUSS CFG space is not exposed. *) Moved APIs pruss_cfg_gpimode(), pruss_cfg_miirt_enable(), pruss_cfg_xfr_enable(), pruss_cfg_get_gpmux(), pruss_cfg_set_gpmux() to pruss.c file as they are using APIs pruss_cfg_read / update. Defined these APIs in pruss.h file as other drivers use these APIs to perform respective operations. Changes from v2 to v3: *) No functional changes, the old series has been rebased on linux-next (tag: next-20230306). This series depends on another series which is already merged in the remoteproc tree[2] and is part of v6.3-rc1. This series and the remoteproc series form the PRUSS consumer API which can be used by consumer drivers to utilize the PRUs. One example of the consumer driver is the PRU-ICSSG ethernet driver [3],which depends on this series and the remoteproc series[2]. [1] https://lore.kernel.org/all/20230306110934.2736465-1-danishanwar@ti.com/ [2] https://lore.kernel.org/all/20230106121046.886863-1-danishanwar@ti.com/#t [3] https://lore.kernel.org/all/20230210114957.2667963-1-danishanwar@ti.com/ [4] https://lore.kernel.org/all/20230306110934.2736465-6-danishanwar@ti.com/ Thanks and Regards, Md Danish Anwar Andrew F. Davis (1): soc: ti: pruss: Add pruss_{request,release}_mem_region() API Suman Anna (2): soc: ti: pruss: Add pruss_cfg_read()/update() API soc: ti: pruss: Add helper functions to set GPI mode, MII_RT_event and XFR Tero Kristo (2): soc: ti: pruss: Add pruss_get()/put() API soc: ti: pruss: Add helper functions to get/set PRUSS_CFG_GPMUX drivers/soc/ti/pruss.c | 278 +++++++++++++++++++++++++++++++ include/linux/pruss_driver.h | 28 +--- include/linux/remoteproc/pruss.h | 179 ++++++++++++++++++++ 3 files changed, 463 insertions(+), 22 deletions(-)