From patchwork Sun Apr 12 14:50:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maulik Shah X-Patchwork-Id: 11484595 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 09ACB14B4 for ; Sun, 12 Apr 2020 14:51:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DF8D7206E9 for ; Sun, 12 Apr 2020 14:51:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="MtfErbem" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727134AbgDLOvI (ORCPT ); Sun, 12 Apr 2020 10:51:08 -0400 Received: from mail27.static.mailgun.info ([104.130.122.27]:13094 "EHLO mail27.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727132AbgDLOvH (ORCPT ); Sun, 12 Apr 2020 10:51:07 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1586703067; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=rOLam1Q9vI5c4I6n7FfGkAOVE3pt/oyTwAH/a+3r7+o=; b=MtfErbemXob/R+aAIBRqZATgznS9hOUUvpIZT+jnh+n+Nu4gl+EJ9rVNmI/a1e2tVQGCfhjx /OSOF9u6TsHYZjijEvSk5VfwFGvmZY/frQLfLikrgExtnT/gX39TurYFWloj3ASe/oqxFUOT Z8xcMyAAbWMuxWkOYXCAsvI9UdM= X-Mailgun-Sending-Ip: 104.130.122.27 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by mxa.mailgun.org with ESMTP id 5e932acb.7f76bbeaa928-smtp-out-n05; Sun, 12 Apr 2020 14:50:51 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id A812DC44788; Sun, 12 Apr 2020 14:50:50 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=ham autolearn_force=no version=3.4.0 Received: from mkshah-linux.qualcomm.com (blr-c-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: mkshah) by smtp.codeaurora.org (Postfix) with ESMTPSA id 44E3FC43636; Sun, 12 Apr 2020 14:50:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 44E3FC43636 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=mkshah@codeaurora.org From: Maulik Shah To: swboyd@chromium.org, evgreen@chromium.org, dianders@chromium.org, bjorn.andersson@linaro.org Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, agross@kernel.org, mka@chromium.org, rnayak@codeaurora.org, ilina@codeaurora.org, lsrao@codeaurora.org, Maulik Shah Subject: [PATCH v17 6/6] soc: qcom: rpmh-rsc: Allow using free WAKE TCS for active request Date: Sun, 12 Apr 2020 20:20:04 +0530 Message-Id: <1586703004-13674-7-git-send-email-mkshah@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1586703004-13674-1-git-send-email-mkshah@codeaurora.org> References: <1586703004-13674-1-git-send-email-mkshah@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org When there are more than one WAKE TCS available and there is no dedicated ACTIVE TCS available, invalidating all WAKE TCSes and waiting for current transfer to complete in first WAKE TCS blocks using another free WAKE TCS to complete current request. Remove rpmh_rsc_invalidate() to happen from tcs_write() when WAKE TCSes is re-purposed to be used for Active mode. Clear only currently used WAKE TCS's register configuration. Fixes: 2de4b8d33eab (drivers: qcom: rpmh-rsc: allow active requests from wake TCS) Signed-off-by: Maulik Shah Reviewed-by: Douglas Anderson Reviewed-by: Stephen Boyd --- drivers/soc/qcom/rpmh-rsc.c | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-) diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c index 80e8a94..cc1293c 100644 --- a/drivers/soc/qcom/rpmh-rsc.c +++ b/drivers/soc/qcom/rpmh-rsc.c @@ -154,7 +154,7 @@ int rpmh_rsc_invalidate(struct rsc_drv *drv) static struct tcs_group *get_tcs_for_msg(struct rsc_drv *drv, const struct tcs_request *msg) { - int type, ret; + int type; struct tcs_group *tcs; switch (msg->state) { @@ -175,19 +175,10 @@ static struct tcs_group *get_tcs_for_msg(struct rsc_drv *drv, * If we are making an active request on a RSC that does not have a * dedicated TCS for active state use, then re-purpose a wake TCS to * send active votes. - * NOTE: The driver must be aware that this RSC does not have a - * dedicated AMC, and therefore would invalidate the sleep and wake - * TCSes before making an active state request. */ tcs = get_tcs_of_type(drv, type); - if (msg->state == RPMH_ACTIVE_ONLY_STATE && !tcs->num_tcs) { + if (msg->state == RPMH_ACTIVE_ONLY_STATE && !tcs->num_tcs) tcs = get_tcs_of_type(drv, WAKE_TCS); - if (tcs->num_tcs) { - ret = rpmh_rsc_invalidate(drv); - if (ret) - return ERR_PTR(ret); - } - } return tcs; } @@ -412,8 +403,16 @@ static int tcs_write(struct rsc_drv *drv, const struct tcs_request *msg) tcs->req[tcs_id - tcs->offset] = msg; set_bit(tcs_id, drv->tcs_in_use); - if (msg->state == RPMH_ACTIVE_ONLY_STATE && tcs->type != ACTIVE_TCS) + if (msg->state == RPMH_ACTIVE_ONLY_STATE && tcs->type != ACTIVE_TCS) { + /* + * Clear previously programmed WAKE commands in selected + * repurposed TCS to avoid triggering them. tcs->slots will be + * cleaned from rpmh_flush() by invoking rpmh_rsc_invalidate() + */ + write_tcs_reg_sync(drv, RSC_DRV_CMD_ENABLE, tcs_id, 0); + write_tcs_reg_sync(drv, RSC_DRV_CMD_WAIT_FOR_CMPL, tcs_id, 0); enable_tcs_irq(drv, tcs_id, true); + } spin_unlock(&drv->lock); __tcs_buffer_write(drv, tcs_id, 0, msg);