From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B0262C388F3 for ; Fri, 27 Sep 2019 11:43:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9039421848 for ; Fri, 27 Sep 2019 11:43:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727333AbfI0LnI (ORCPT ); Fri, 27 Sep 2019 07:43:08 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:29802 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726163AbfI0LnD (ORCPT ); Fri, 27 Sep 2019 07:43:03 -0400 X-UUID: 81f1efcbf5d34f33953630566e96e80d-20190927 X-UUID: 81f1efcbf5d34f33953630566e96e80d-20190927 Received: from mtkcas07.mediatek.inc [(172.21.101.84)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 1580053546; Fri, 27 Sep 2019 19:42:57 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs05n2.mediatek.inc (172.21.101.140) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 27 Sep 2019 19:42:53 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Fri, 27 Sep 2019 19:42:54 +0800 From: Bibby Hsieh To: Matthias Brugger , Rob Herring , CK HU CC: , , , , , Nicolas Boichat , Dennis-YC Hsieh , Houlong Wei , Bibby Hsieh Subject: [PATCH v15 2/4] soc: mediatek: cmdq: add polling function Date: Fri, 27 Sep 2019 19:42:52 +0800 Message-ID: <20190927114254.6258-3-bibby.hsieh@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20190927114254.6258-1-bibby.hsieh@mediatek.com> References: <20190927114254.6258-1-bibby.hsieh@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org add polling function in cmdq helper functions Signed-off-by: Bibby Hsieh Reviewed-by: CK Hu Reviewed-by: Houlong Wei --- drivers/soc/mediatek/mtk-cmdq-helper.c | 41 ++++++++++++++++++++++++ include/linux/mailbox/mtk-cmdq-mailbox.h | 1 + include/linux/soc/mediatek/mtk-cmdq.h | 32 ++++++++++++++++++ 3 files changed, 74 insertions(+) diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c index 7af327b98d25..8b301f01ff4b 100644 --- a/drivers/soc/mediatek/mtk-cmdq-helper.c +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c @@ -236,6 +236,47 @@ int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event) } EXPORT_SYMBOL(cmdq_pkt_clear_event); +int cmdq_pkt_poll(struct cmdq_pkt *pkt, u8 subsys, + u16 offset, u32 value) +{ + struct cmdq_instruction *inst = kzalloc(sizeof(*inst), GFP_KERNEL); + int err = 0; + + if (!inst) + return -ENOMEM; + + inst->op = CMDQ_CODE_POLL; + inst->value = value; + inst->offset = offset; + inst->subsys = subsys; + + err = cmdq_pkt_append_command(pkt, inst); + kfree(inst); + + return err; +} +EXPORT_SYMBOL(cmdq_pkt_poll); + +int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys, + u16 offset, u32 value, u32 mask) +{ + struct cmdq_instruction *inst = kzalloc(sizeof(*inst), GFP_KERNEL); + int err = 0; + + if (!inst) + return -ENOMEM; + + inst->op = CMDQ_CODE_MASK; + inst->mask = ~mask; + err = cmdq_pkt_append_command(pkt, inst); + offset = offset | 0x1; + err |= cmdq_pkt_poll(pkt, subsys, offset, value); + kfree(inst); + + return err; +} +EXPORT_SYMBOL(cmdq_pkt_poll_mask); + static int cmdq_pkt_finalize(struct cmdq_pkt *pkt) { struct cmdq_instruction *inst = kzalloc(sizeof(*inst), GFP_KERNEL); diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h index 678760548791..a4dc45fbec0a 100644 --- a/include/linux/mailbox/mtk-cmdq-mailbox.h +++ b/include/linux/mailbox/mtk-cmdq-mailbox.h @@ -55,6 +55,7 @@ enum cmdq_code { CMDQ_CODE_MASK = 0x02, CMDQ_CODE_WRITE = 0x04, + CMDQ_CODE_POLL = 0x08, CMDQ_CODE_JUMP = 0x10, CMDQ_CODE_WFE = 0x20, CMDQ_CODE_EOC = 0x40, diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h index 9618debb9ceb..92bd5b5c6341 100644 --- a/include/linux/soc/mediatek/mtk-cmdq.h +++ b/include/linux/soc/mediatek/mtk-cmdq.h @@ -99,6 +99,38 @@ int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event); */ int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event); +/** + * cmdq_pkt_poll() - Append polling command to the CMDQ packet, ask GCE to + * execute an instruction that wait for a specified + * hardware register to check for the value w/o mask. + * All GCE hardware threads will be blocked by this + * instruction. + * @pkt: the CMDQ packet + * @subsys: the CMDQ sub system code + * @offset: register offset from CMDQ sub system + * @value: the specified target register value + * + * Return: 0 for success; else the error code is returned + */ +int cmdq_pkt_poll(struct cmdq_pkt *pkt, u8 subsys, + u16 offset, u32 value); + +/** + * cmdq_pkt_poll_mask() - Append polling command to the CMDQ packet, ask GCE to + * execute an instruction that wait for a specified + * hardware register to check for the value w/ mask. + * All GCE hardware threads will be blocked by this + * instruction. + * @pkt: the CMDQ packet + * @subsys: the CMDQ sub system code + * @offset: register offset from CMDQ sub system + * @value: the specified target register value + * @mask: the specified target register mask + * + * Return: 0 for success; else the error code is returned + */ +int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys, + u16 offset, u32 value, u32 mask); /** * cmdq_pkt_flush_async() - trigger CMDQ to asynchronously execute the CMDQ * packet and call back at the end of done packet -- 2.18.0