From patchwork Thu Feb 11 17:50:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 12083823 X-Patchwork-Delegate: kuba@kernel.org 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 66337C433E0 for ; Thu, 11 Feb 2021 18:15:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2998564E13 for ; Thu, 11 Feb 2021 18:15:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232565AbhBKSFM (ORCPT ); Thu, 11 Feb 2021 13:05:12 -0500 Received: from m-r1.th.seeweb.it ([5.144.164.170]:37289 "EHLO m-r1.th.seeweb.it" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232303AbhBKSBq (ORCPT ); Thu, 11 Feb 2021 13:01:46 -0500 Received: from IcarusMOD.eternityproject.eu (unknown [2.237.20.237]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by m-r1.th.seeweb.it (Postfix) with ESMTPSA id 9E3621F8CC; Thu, 11 Feb 2021 18:50:18 +0100 (CET) From: AngeloGioacchino Del Regno To: elder@kernel.org Cc: bjorn.andersson@linaro.org, agross@kernel.org, davem@davemloft.net, kuba@kernel.org, linux-arm-msm@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, konrad.dybcio@somainline.org, marijn.suijten@somainline.org, phone-devel@vger.kernel.org, AngeloGioacchino Del Regno Subject: [PATCH v1 4/7] net: ipa: gsi: Use right masks for GSI v1.0 channels hw param Date: Thu, 11 Feb 2021 18:50:12 +0100 Message-Id: <20210211175015.200772-5-angelogioacchino.delregno@somainline.org> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210211175015.200772-1-angelogioacchino.delregno@somainline.org> References: <20210211175015.200772-1-angelogioacchino.delregno@somainline.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org In GSI v1.0 the register GSI_HW_PARAM_2_OFFSET has different layout so the number of channels and events per EE are, of course, laid out in 8 bits each (0-7, 8-15 respectively). Signed-off-by: AngeloGioacchino Del Regno --- drivers/net/ipa/gsi.c | 16 +++++++++++++--- drivers/net/ipa/gsi_reg.h | 5 +++++ 2 files changed, 18 insertions(+), 3 deletions(-) diff --git a/drivers/net/ipa/gsi.c b/drivers/net/ipa/gsi.c index b5460cbb085c..3311ffe514c9 100644 --- a/drivers/net/ipa/gsi.c +++ b/drivers/net/ipa/gsi.c @@ -1790,7 +1790,7 @@ static void gsi_channel_teardown(struct gsi *gsi) int gsi_setup(struct gsi *gsi) { struct device *dev = gsi->dev; - u32 val; + u32 val, mask; int ret; /* Here is where we first touch the GSI hardware */ @@ -1804,7 +1804,12 @@ int gsi_setup(struct gsi *gsi) val = ioread32(gsi->virt + GSI_GSI_HW_PARAM_2_OFFSET); - gsi->channel_count = u32_get_bits(val, NUM_CH_PER_EE_FMASK); + if (gsi->version == IPA_VERSION_3_1) + mask = GSIV1_NUM_CH_PER_EE_FMASK; + else + mask = NUM_CH_PER_EE_FMASK; + + gsi->channel_count = u32_get_bits(val, mask); if (!gsi->channel_count) { dev_err(dev, "GSI reports zero channels supported\n"); return -EINVAL; @@ -1816,7 +1821,12 @@ int gsi_setup(struct gsi *gsi) gsi->channel_count = GSI_CHANNEL_COUNT_MAX; } - gsi->evt_ring_count = u32_get_bits(val, NUM_EV_PER_EE_FMASK); + if (gsi->version == IPA_VERSION_3_1) + mask = GSIV1_NUM_EV_PER_EE_FMASK; + else + mask = NUM_EV_PER_EE_FMASK; + + gsi->evt_ring_count = u32_get_bits(val, mask); if (!gsi->evt_ring_count) { dev_err(dev, "GSI reports zero event rings supported\n"); return -EINVAL; diff --git a/drivers/net/ipa/gsi_reg.h b/drivers/net/ipa/gsi_reg.h index 0e138bbd8205..4ba579fa21c2 100644 --- a/drivers/net/ipa/gsi_reg.h +++ b/drivers/net/ipa/gsi_reg.h @@ -287,6 +287,11 @@ enum gsi_generic_cmd_opcode { GSI_EE_N_GSI_HW_PARAM_2_OFFSET(GSI_EE_AP) #define GSI_EE_N_GSI_HW_PARAM_2_OFFSET(ee) \ (0x0001f040 + 0x4000 * (ee)) + +/* Fields below are present for IPA v3.1 with GSI version 1 */ +#define GSIV1_NUM_EV_PER_EE_FMASK GENMASK(8, 0) +#define GSIV1_NUM_CH_PER_EE_FMASK GENMASK(15, 8) +/* Fields below are present for IPA v3.5.1 and above */ #define IRAM_SIZE_FMASK GENMASK(2, 0) #define NUM_CH_PER_EE_FMASK GENMASK(7, 3) #define NUM_EV_PER_EE_FMASK GENMASK(12, 8)