From patchwork Fri Dec 13 21:33:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeffrey Hugo X-Patchwork-Id: 13907873 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 232CE54723; Fri, 13 Dec 2024 21:34:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734125651; cv=none; b=sLzaW/lPyu59YUgxPYZmDFIwUcy4XjvNew7LsbN9pWInqsvxVN/kmG8HT00JhTm8Krj25beGnEs1uqqCg5E6i/bQxsr0V99IXBmfni9d609Nt64gaW1uYhAAV1VEDJ/hw1omjHXo4iecx+cTSQ/f0PIskHMNYaLj2h2Ow2am3Fc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734125651; c=relaxed/simple; bh=rIRKra47nl86xYD78ueag2g5bISMw1W29tnKvvl0zO0=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=IV4daXL1oRUpxIb8xMUZKAK14zP1KL7c+hBfvPZ/aOVxaZ/CmvuIm3dMUd1qTLJBLAj4AIzXfeLfFNV9uZhD7MoxIyVZGTd/xIvEsD+Lc75fYpBd2eqbGUH9onDgJ3awUxQbKS6i5CIe4KyU+Oadu4EXdjJjUSpGxEKoSIP2sOE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=ia/EOror; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="ia/EOror" Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 4BDJohjF022799; Fri, 13 Dec 2024 21:34:03 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= AxjnS2XneeHwhIxD6Bwzlvv/KHyOduyIMoVnw8R1SVI=; b=ia/EOrorxZtzuPwY Uzu1k4/fKC1dFWv8W+hEyQSY/4gvmZr53i8oHbyIMoUk8ujVObB981YJgo9QHOkv Rb0ywLZWFFWyre/5IBqAWNKAHSZpla/wDUXzADXyc3ah+LCD9TO2eR4ugjm9itD7 l0Wj3dyPtzPFqn5nG6jvxHwkTBbHBO6jc30excwkEi46WL+LbPGCSFNuqo5k0f1B T3K9YM+KwjIC+qZ5V7qmXNBr5fjfYN7iIvSSacvdhqNH/mCfzlFY1a5IAhGzx4PI BvwgOmrgTVcw7t7SdDVzqzUIiBfD9i4qccRdfoMdGI4RD+sxCo0V3D4PO5NmEaIS 59omeQ== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 43g4wnbpkn-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 13 Dec 2024 21:34:03 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA01.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 4BDLY2e5002759 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 13 Dec 2024 21:34:02 GMT Received: from jhugo-lnx.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Fri, 13 Dec 2024 13:34:02 -0800 From: Jeffrey Hugo To: , , , , CC: , , , , , , Jeffrey Hugo Subject: [PATCH 2/7] bus: mhi: host: Add a policy to enable image transfer via BHIe in PBL Date: Fri, 13 Dec 2024 14:33:35 -0700 Message-ID: <20241213213340.2551697-3-quic_jhugo@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241213213340.2551697-1-quic_jhugo@quicinc.com> References: <20241213213340.2551697-1-quic_jhugo@quicinc.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: 5w4XY3yS30IYd93AJpSbR82hX6KWqxKF X-Proofpoint-GUID: 5w4XY3yS30IYd93AJpSbR82hX6KWqxKF X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 lowpriorityscore=0 priorityscore=1501 mlxlogscore=999 spamscore=0 mlxscore=0 clxscore=1015 adultscore=0 phishscore=0 suspectscore=0 bulkscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2411120000 definitions=main-2412130152 From: Matthew Leung Currently, mhi host only performs firmware transfer via BHI in PBL and BHIe from SBL. To support BHIe transfer directly from PBL, a policy needs to be added. With this policy, BHIe will be used to transfer firmware in PBL if the mhi controller has bhie regs, sets seg_len, and does not set fbc_download. The intention is to transfer firmware using BHIe in PBL without further BHIe transfers in SBL. Signed-off-by: Matthew Leung Reviewed-by: Youssef Samir Reviewed-by: Jeffrey Hugo Signed-off-by: Jeffrey Hugo --- drivers/bus/mhi/host/boot.c | 80 +++++++++++++++++++++++++++------ drivers/bus/mhi/host/init.c | 2 +- drivers/bus/mhi/host/internal.h | 8 ++++ 3 files changed, 75 insertions(+), 15 deletions(-) diff --git a/drivers/bus/mhi/host/boot.c b/drivers/bus/mhi/host/boot.c index e3f3c07166ad..c9ecb6427209 100644 --- a/drivers/bus/mhi/host/boot.c +++ b/drivers/bus/mhi/host/boot.c @@ -452,12 +452,62 @@ static void mhi_firmware_copy_bhie(struct mhi_controller *mhi_cntrl, } } +static enum mhi_fw_load_type mhi_fw_load_type_get(const struct mhi_controller *mhi_cntrl) +{ + enum mhi_fw_load_type ret = MHI_FW_LOAD_UNKNOWN; + + if (mhi_cntrl->fbc_download) { + if (mhi_cntrl->bhie && mhi_cntrl->seg_len) + ret = MHI_FW_LOAD_FBC; + } else { + if (mhi_cntrl->bhie && mhi_cntrl->seg_len) + ret = MHI_FW_LOAD_BHIE; + else + ret = MHI_FW_LOAD_BHI; + } + return ret; +} + +static int mhi_send_image_bhi(struct mhi_controller *mhi_cntrl, const u8 *fw_data, size_t size) +{ + struct image_info *image; + int ret; + + ret = mhi_alloc_bhi_buffer(mhi_cntrl, &image, size); + if (ret) + return ret; + + mhi_firmware_copy_bhi(mhi_cntrl, fw_data, size, image); + + ret = mhi_fw_load_bhi(mhi_cntrl, &image->mhi_buf[image->entries - 1]); + mhi_free_bhi_buffer(mhi_cntrl, image); + + return ret; +} + +static int mhi_send_image_bhie(struct mhi_controller *mhi_cntrl, const u8 *fw_data, size_t size) +{ + struct image_info *image; + int ret; + + ret = mhi_alloc_bhie_table(mhi_cntrl, &image, size); + if (ret) + return ret; + + mhi_firmware_copy_bhie(mhi_cntrl, fw_data, size, image); + + ret = mhi_fw_load_bhie(mhi_cntrl, &image->mhi_buf[image->entries - 1]); + mhi_free_bhie_table(mhi_cntrl, image); + + return ret; +} + void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl) { const struct firmware *firmware = NULL; struct device *dev = &mhi_cntrl->mhi_dev->dev; + enum mhi_fw_load_type fw_load_type; enum mhi_pm_state new_state; - struct image_info *image; const char *fw_name; const u8 *fw_data; size_t size, fw_sz; @@ -481,6 +531,12 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl) fw_name = (mhi_cntrl->ee == MHI_EE_EDL) ? mhi_cntrl->edl_image : mhi_cntrl->fw_image; + fw_load_type = mhi_fw_load_type_get(mhi_cntrl); + if (fw_load_type == MHI_FW_LOAD_UNKNOWN) { + dev_err(dev, "Cannot load FW as load type is UNKNOWN\n"); + return; + } + /* check if the driver has already provided the firmware data */ if (!fw_name && mhi_cntrl->fbc_download && mhi_cntrl->fw_data && mhi_cntrl->fw_sz) { @@ -518,20 +574,16 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl) fw_sz = firmware->size; skip_req_fw: - ret = mhi_alloc_bhi_buffer(mhi_cntrl, &image, size); - if (ret) { - release_firmware(firmware); - goto error_fw_load; - } - mhi_firmware_copy_bhi(mhi_cntrl, fw_data, size, image); - - /* Download image using BHI */ - ret = mhi_fw_load_bhi(mhi_cntrl, image->mhi_buf); - mhi_free_bhi_buffer(mhi_cntrl, image); + if (fw_load_type == MHI_FW_LOAD_BHIE) + ret = mhi_send_image_bhie(mhi_cntrl, fw_data, size); + else + ret = mhi_send_image_bhi(mhi_cntrl, fw_data, size); /* Error or in EDL mode, we're done */ if (ret) { - dev_err(dev, "MHI did not load image over BHI, ret: %d\n", ret); + dev_err(dev, "MHI did not load image over BHI%s, ret: %d\n", + fw_load_type == MHI_FW_LOAD_BHIE ? "e" : "", + ret); release_firmware(firmware); goto error_fw_load; } @@ -550,7 +602,7 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl) * If we're doing fbc, populate vector tables while * device transitioning into MHI READY state */ - if (mhi_cntrl->fbc_download) { + if (fw_load_type == MHI_FW_LOAD_FBC) { ret = mhi_alloc_bhie_table(mhi_cntrl, &mhi_cntrl->fbc_image, fw_sz); if (ret) { release_firmware(firmware); @@ -575,7 +627,7 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl) return; error_ready_state: - if (mhi_cntrl->fbc_download) { + if (fw_load_type == MHI_FW_LOAD_FBC) { mhi_free_bhie_table(mhi_cntrl, mhi_cntrl->fbc_image); mhi_cntrl->fbc_image = NULL; } diff --git a/drivers/bus/mhi/host/init.c b/drivers/bus/mhi/host/init.c index a9b1f8beee7b..13e7a55f54ff 100644 --- a/drivers/bus/mhi/host/init.c +++ b/drivers/bus/mhi/host/init.c @@ -1144,7 +1144,7 @@ int mhi_prepare_for_power_up(struct mhi_controller *mhi_cntrl) } mhi_cntrl->bhi = mhi_cntrl->regs + bhi_off; - if (mhi_cntrl->fbc_download || mhi_cntrl->rddm_size) { + if (mhi_cntrl->fbc_download || mhi_cntrl->rddm_size || mhi_cntrl->seg_len) { ret = mhi_read_reg(mhi_cntrl, mhi_cntrl->regs, BHIEOFF, &bhie_off); if (ret) { diff --git a/drivers/bus/mhi/host/internal.h b/drivers/bus/mhi/host/internal.h index 3134f111be35..afcf536083bc 100644 --- a/drivers/bus/mhi/host/internal.h +++ b/drivers/bus/mhi/host/internal.h @@ -29,6 +29,14 @@ struct bhi_vec_entry { u64 size; }; +enum mhi_fw_load_type { + MHI_FW_LOAD_UNKNOWN, + MHI_FW_LOAD_BHI, /* BHI only in PBL */ + MHI_FW_LOAD_BHIE, /* BHIe only in PBL */ + MHI_FW_LOAD_FBC, /* BHI in PBL followed by BHIe in SBL */ + MHI_FW_LOAD_MAX, +}; + enum mhi_ch_state_type { MHI_CH_STATE_TYPE_RESET, MHI_CH_STATE_TYPE_STOP,