From patchwork Wed Mar 24 13:15:26 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Elder X-Patchwork-Id: 407812 Delivered-To: patch@linaro.org Received: by 2002:a02:8562:0:0:0:0:0 with SMTP id g89csp402055jai; Wed, 24 Mar 2021 06:16:44 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyp5glrNXS6eOkUj06Oy9zu5ol9yAMBddXj7am52rEAMIJrnGwkSaIR9MSVOCrc7BwJG3Jr X-Received: by 2002:a17:906:dfce:: with SMTP id jt14mr3687130ejc.83.1616591803838; Wed, 24 Mar 2021 06:16:43 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1616591803; cv=none; d=google.com; s=arc-20160816; b=lck4QKqp6cBwXOzUhzQamFZ/FxnwdMSCKsWsiSM4hnyzBqCVfHeorpJfkRXcwIX1pP NPsldbhIcGJXLu426u8j+cNL6cAVnCUEEbSd/kG7IwVzcMEY0zvK7DJXSMsuNK5IxAlZ DKUjCYZOMnvBxDHKG0r0UPsnyP8h787z6nbxNczWjMeMql640M1MiGZTTTrw48ks2tSY hMOJM0I3E2ogme0pDbfnl6Q1U4E9jUBo3PH41Mh3pXlhenSvjUXYzPrlcFkYNwVyT7g7 6pDjmJQTFMVlSchtjv7NzKlswhFTYc6wqu2Yg4k1Oe88+xrPLpmi49WLxl2yIvRux2Ff MvrQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=urnf0slLMOPXg7nga5dabZHaUvtoQMaa3zOQvFLPfpg=; b=kmodcXa75hs2XIorVhbrES6JsV+Z79uCUVO94Z1LV1BaKGN1zcwEA5qodh6Au5Y5Yv ZRlTGC3Xzgvq7w9zh1og3Sw+bLXBmPfmzX5MAzQP5VoPnNVw6PrdFOzMfm+xhir/rPBn jljjcTXyFcyptdSUbjs/hRX3xf1JLCAi0hWmZOfg0//pXyBLEY9Ywp7pqoaz0IDktCKr Fr3ZrzgvA40mDl3BO7vuiXRXNF4Xu1JpSWcNC2yPEi1TQANCOvrL43djmuCO9RCdcTmQ lIKujhehfeX9g+Da03zfxt6YxlMr0K26ZiymtgQNVT5IrqP7+3DEpR/0NnIlbwbiIA8n Vlbw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=XXnUftby; spf=pass (google.com: domain of netdev-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=netdev-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id s9si1732044edc.296.2021.03.24.06.16.43; Wed, 24 Mar 2021 06:16:43 -0700 (PDT) Received-SPF: pass (google.com: domain of netdev-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=XXnUftby; spf=pass (google.com: domain of netdev-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=netdev-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235221AbhCXNQX (ORCPT + 8 others); Wed, 24 Mar 2021 09:16:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33934 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234712AbhCXNPf (ORCPT ); Wed, 24 Mar 2021 09:15:35 -0400 Received: from mail-io1-xd2d.google.com (mail-io1-xd2d.google.com [IPv6:2607:f8b0:4864:20::d2d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 12BAAC0613E4 for ; Wed, 24 Mar 2021 06:15:35 -0700 (PDT) Received: by mail-io1-xd2d.google.com with SMTP id j26so21396654iog.13 for ; Wed, 24 Mar 2021 06:15:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=urnf0slLMOPXg7nga5dabZHaUvtoQMaa3zOQvFLPfpg=; b=XXnUftby1PJstg1QGnrNCyvVockAvhoQ4xBqC3Kf5fXe0U9HwzNSpk/AcZ6lMxVnV5 YpIHmEPU26v+ECSQKHWVT15lyU8o90U+CdvemETr7dq3mWdRX89pRvWPVH0uCSq5BIcs oZhyUN3H7ptyM0YL7XbZ4AvLU8CLuY0vM1bpVE9rwnl2GsYK+MO0tAWcKzxMRdSMTc+K GKwQA294TDJ0NoaOOzaZLFpDIOlg1JPImV/q9OyZS2cGs0Shc73ISRQF5w9x1Tvl435X pTn97IR50kxQ8CsvOXIDGhuQStJ6UTPv2WcpJQm9ZnKB+S7AbTWDU7z4TNEd0VqWfvQE sGUQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=urnf0slLMOPXg7nga5dabZHaUvtoQMaa3zOQvFLPfpg=; b=DSQ/41xBLP57tqKg5KOX7fb8tv6/8uDHCag6iIaVtlgWsA2mENer6iTHsQdp1Jd5Fd d8zQoIOKdWCxf8+rjQvveZD69ZJdQGOMSgJ7JIWRDSsKR6WgT5iJCaomtgSHvBofGjqO fziFE5QYV/cBJOcAOITQvoq+7X20iWgtNl+BnfPhi9OkWt5PJRWicf1FgQbrm+THVuz8 JQv0bZI76WlGK2DdsIFbHuddQjaqr4+aaAKh1jrG1upB5rJ9U/aSvjC3afgMxW2vu+5Z RjIo3Iqu32IeO69pN/6GUVph6t4qrvgpVm2sF2eI7DoYhzsKh8mBUyDoGjcz/QuqySsa Gvyw== X-Gm-Message-State: AOAM530je6lhKa+ED6SYqKixTq5fU0MAsY7crZPWWw+Knp5RBiRui2u3 ucbOy5FzXR82lM+Z6OZYQrzrqegAnZeEWdQW X-Received: by 2002:a02:cad9:: with SMTP id f25mr2799645jap.26.1616591734490; Wed, 24 Mar 2021 06:15:34 -0700 (PDT) Received: from localhost.localdomain (c-73-185-129-58.hsd1.mn.comcast.net. [73.185.129.58]) by smtp.gmail.com with ESMTPSA id n7sm1160486ile.12.2021.03.24.06.15.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 24 Mar 2021 06:15:34 -0700 (PDT) From: Alex Elder To: davem@davemloft.net, kuba@kernel.org Cc: bjorn.andersson@linaro.org, evgreen@chromium.org, cpratapa@codeaurora.org, subashab@codeaurora.org, elder@kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next v2 4/6] net: ipa: limit local processing context address Date: Wed, 24 Mar 2021 08:15:26 -0500 Message-Id: <20210324131528.2369348-5-elder@linaro.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210324131528.2369348-1-elder@linaro.org> References: <20210324131528.2369348-1-elder@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Not all of the bits of the LOCAL_PKT_PROC_CNTXT register are valid. Until IPA v4.5, there are 17 valid bits (though the bottom three must be zero). Starting with IPA v4.5, 18 bits are valid. Introduce proc_cntxt_base_addr_encoded() to encode the base address for use in the register using only the valid bits. Shorten the name of the register (omit "_BASE") to avoid the need to wrap the line in the one place it's used. Signed-off-by: Alex Elder --- drivers/net/ipa/ipa_mem.c | 6 ++++-- drivers/net/ipa/ipa_reg.h | 14 ++++++++++++-- 2 files changed, 16 insertions(+), 4 deletions(-) -- 2.27.0 diff --git a/drivers/net/ipa/ipa_mem.c b/drivers/net/ipa/ipa_mem.c index f25029b9ec857..32907dde5dc6a 100644 --- a/drivers/net/ipa/ipa_mem.c +++ b/drivers/net/ipa/ipa_mem.c @@ -61,6 +61,7 @@ int ipa_mem_setup(struct ipa *ipa) struct gsi_trans *trans; u32 offset; u16 size; + u32 val; /* Get a transaction to define the header memory region and to zero * the processing context and modem memory regions. @@ -89,8 +90,9 @@ int ipa_mem_setup(struct ipa *ipa) gsi_trans_commit_wait(trans); /* Tell the hardware where the processing context area is located */ - iowrite32(ipa->mem_offset + ipa->mem[IPA_MEM_MODEM_PROC_CTX].offset, - ipa->reg_virt + IPA_REG_LOCAL_PKT_PROC_CNTXT_BASE_OFFSET); + offset = ipa->mem_offset + ipa->mem[IPA_MEM_MODEM_PROC_CTX].offset; + val = proc_cntxt_base_addr_encoded(ipa->version, offset); + iowrite32(val, ipa->reg_virt + IPA_REG_LOCAL_PKT_PROC_CNTXT_OFFSET); return 0; } diff --git a/drivers/net/ipa/ipa_reg.h b/drivers/net/ipa/ipa_reg.h index bba088e80cd1e..cbfef27bbcf2c 100644 --- a/drivers/net/ipa/ipa_reg.h +++ b/drivers/net/ipa/ipa_reg.h @@ -217,8 +217,18 @@ static inline u32 ipa_reg_bcr_val(enum ipa_version version) return 0x00000000; } -/* The value of the next register must be a multiple of 8 */ -#define IPA_REG_LOCAL_PKT_PROC_CNTXT_BASE_OFFSET 0x000001e8 +/* The value of the next register must be a multiple of 8 (bottom 3 bits 0) */ +#define IPA_REG_LOCAL_PKT_PROC_CNTXT_OFFSET 0x000001e8 + +/* Encoded value for LOCAL_PKT_PROC_CNTXT register BASE_ADDR field */ +static inline u32 proc_cntxt_base_addr_encoded(enum ipa_version version, + u32 addr) +{ + if (version < IPA_VERSION_4_5) + return u32_encode_bits(addr, GENMASK(16, 0)); + + return u32_encode_bits(addr, GENMASK(17, 0)); +} /* ipa->available defines the valid bits in the AGGR_FORCE_CLOSE register */ #define IPA_REG_AGGR_FORCE_CLOSE_OFFSET 0x000001ec