From patchwork Mon Mar 20 15:11:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeffrey Hugo X-Patchwork-Id: 13181436 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4C99BC7619A for ; Mon, 20 Mar 2023 15:11:59 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E1BBB10E59B; Mon, 20 Mar 2023 15:11:57 +0000 (UTC) Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by gabe.freedesktop.org (Postfix) with ESMTPS id B752E10E59A for ; Mon, 20 Mar 2023 15:11:55 +0000 (UTC) Received: from pps.filterd (m0279870.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 32KDPboU029611; Mon, 20 Mar 2023 15:11:47 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=qcppdkim1; bh=DfX4aBBe+b86Xymim8zgaIzyYiANM1KKJyTaMqxr1AU=; b=NuNv7Wap/Oo6NC3m1i8cvQFRYyhmA4+iT06nk1Tun75RjsEoxZoCFpzGh3ZB2dUqaz0m 8GxBGqebUkVK08ayopu5umvOvsS6hLL3PkDP/Cz1HmhP4ExfjD0IyWQQYSTAjKHMe5pG iQpib2kL2AMX1okOEOos6+C/tETnzAHEk6IVGMN11i7WkH6KAZ5V21jVq+WRQDwRM2Cz eJ1aPI4NGiDItwiaf8yBOa8rD4o0gHuNGl+0+HxYAN1Tje4O3Gd0h2Xw/QkV2dMEcn6B FoNQGGXShxuE1pILYvsyebOzfuNKV5D8S+/mjF4/r4t5wHEbruI+0chI3sM24G/Kx+jM Qw== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3perc389h3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 20 Mar 2023 15:11:46 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 32KFBjpU024615 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 20 Mar 2023 15:11:45 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 15.2.986.41; Mon, 20 Mar 2023 08:11:44 -0700 From: Jeffrey Hugo To: , , , , Subject: [PATCH v4 3/8] accel/qaic: Add MHI controller Date: Mon, 20 Mar 2023 09:11:09 -0600 Message-ID: <1679325074-5494-4-git-send-email-quic_jhugo@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1679325074-5494-1-git-send-email-quic_jhugo@quicinc.com> References: <1679325074-5494-1-git-send-email-quic_jhugo@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] 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-GUID: T_1W52OFEacJD0CKNYkyTftBwa-FeUjp X-Proofpoint-ORIG-GUID: T_1W52OFEacJD0CKNYkyTftBwa-FeUjp X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-03-20_10,2023-03-20_02,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 mlxscore=0 adultscore=0 priorityscore=1501 bulkscore=0 clxscore=1015 mlxlogscore=999 phishscore=0 suspectscore=0 lowpriorityscore=0 malwarescore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303150002 definitions=main-2303200129 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jeffrey Hugo , dafna@fastmail.com, linux-doc@vger.kernel.org, linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, quic_ajitpals@quicinc.com, quic_pkanojiy@quicinc.com, quic_carlv@quicinc.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" An AIC100 device contains a MHI interface with a number of different channels for controlling different aspects of the device. The MHI controller works with the MHI bus to enable and drive that interface. AIC100 uses the BHI protocol in PBL to load SBL. The MHI controller expects the SBL to be located at /lib/firmware/qcom/aic100/sbl.bin and expects the MHI bus to manage the process of loading and sending SBL to the device. Signed-off-by: Jeffrey Hugo Reviewed-by: Carl Vanderlip Reviewed-by: Pranjal Ramajor Asha Kanojiya Reviewed-by: Stanislaw Gruszka Reviewed-by: Jacek Lawrynowicz --- drivers/accel/qaic/mhi_controller.c | 563 ++++++++++++++++++++++++++++++++++++ drivers/accel/qaic/mhi_controller.h | 16 + 2 files changed, 579 insertions(+) create mode 100644 drivers/accel/qaic/mhi_controller.c create mode 100644 drivers/accel/qaic/mhi_controller.h diff --git a/drivers/accel/qaic/mhi_controller.c b/drivers/accel/qaic/mhi_controller.c new file mode 100644 index 0000000..777dfbe --- /dev/null +++ b/drivers/accel/qaic/mhi_controller.c @@ -0,0 +1,563 @@ +// SPDX-License-Identifier: GPL-2.0-only + +/* Copyright (c) 2019-2021, The Linux Foundation. All rights reserved. */ +/* Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved. */ + +#include +#include +#include +#include +#include +#include +#include + +#include "mhi_controller.h" +#include "qaic.h" + +#define MAX_RESET_TIME_SEC 25 + +static unsigned int mhi_timeout_ms = 2000; /* 2 sec default */ +module_param(mhi_timeout_ms, uint, 0600); +MODULE_PARM_DESC(mhi_timeout_ms, "MHI controller timeout value"); + +static struct mhi_channel_config aic100_channels[] = { + { + .name = "QAIC_LOOPBACK", + .num = 0, + .num_elements = 32, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_TO_DEVICE, + .ee_mask = MHI_CH_EE_AMSS, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .name = "QAIC_LOOPBACK", + .num = 1, + .num_elements = 32, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_FROM_DEVICE, + .ee_mask = MHI_CH_EE_AMSS, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .name = "QAIC_SAHARA", + .num = 2, + .num_elements = 32, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_TO_DEVICE, + .ee_mask = MHI_CH_EE_SBL, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .name = "QAIC_SAHARA", + .num = 3, + .num_elements = 32, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_FROM_DEVICE, + .ee_mask = MHI_CH_EE_SBL, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .name = "QAIC_DIAG", + .num = 4, + .num_elements = 32, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_TO_DEVICE, + .ee_mask = MHI_CH_EE_AMSS, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .name = "QAIC_DIAG", + .num = 5, + .num_elements = 32, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_FROM_DEVICE, + .ee_mask = MHI_CH_EE_AMSS, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .name = "QAIC_SSR", + .num = 6, + .num_elements = 32, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_TO_DEVICE, + .ee_mask = MHI_CH_EE_AMSS, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .name = "QAIC_SSR", + .num = 7, + .num_elements = 32, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_FROM_DEVICE, + .ee_mask = MHI_CH_EE_AMSS, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .name = "QAIC_QDSS", + .num = 8, + .num_elements = 32, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_TO_DEVICE, + .ee_mask = MHI_CH_EE_AMSS, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .name = "QAIC_QDSS", + .num = 9, + .num_elements = 32, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_FROM_DEVICE, + .ee_mask = MHI_CH_EE_AMSS, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .name = "QAIC_CONTROL", + .num = 10, + .num_elements = 128, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_TO_DEVICE, + .ee_mask = MHI_CH_EE_AMSS, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .name = "QAIC_CONTROL", + .num = 11, + .num_elements = 128, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_FROM_DEVICE, + .ee_mask = MHI_CH_EE_AMSS, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .name = "QAIC_LOGGING", + .num = 12, + .num_elements = 32, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_TO_DEVICE, + .ee_mask = MHI_CH_EE_SBL, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .name = "QAIC_LOGGING", + .num = 13, + .num_elements = 32, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_FROM_DEVICE, + .ee_mask = MHI_CH_EE_SBL, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .name = "QAIC_STATUS", + .num = 14, + .num_elements = 32, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_TO_DEVICE, + .ee_mask = MHI_CH_EE_AMSS, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .name = "QAIC_STATUS", + .num = 15, + .num_elements = 32, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_FROM_DEVICE, + .ee_mask = MHI_CH_EE_AMSS, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .name = "QAIC_TELEMETRY", + .num = 16, + .num_elements = 32, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_TO_DEVICE, + .ee_mask = MHI_CH_EE_AMSS, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .name = "QAIC_TELEMETRY", + .num = 17, + .num_elements = 32, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_FROM_DEVICE, + .ee_mask = MHI_CH_EE_AMSS, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .name = "QAIC_DEBUG", + .num = 18, + .num_elements = 32, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_TO_DEVICE, + .ee_mask = MHI_CH_EE_AMSS, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .name = "QAIC_DEBUG", + .num = 19, + .num_elements = 32, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_FROM_DEVICE, + .ee_mask = MHI_CH_EE_AMSS, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .name = "QAIC_TIMESYNC", + .num = 20, + .num_elements = 32, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_TO_DEVICE, + .ee_mask = MHI_CH_EE_SBL | MHI_CH_EE_AMSS, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, + { + .num = 21, + .name = "QAIC_TIMESYNC", + .num_elements = 32, + .local_elements = 0, + .event_ring = 0, + .dir = DMA_FROM_DEVICE, + .ee_mask = MHI_CH_EE_SBL | MHI_CH_EE_AMSS, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .wake_capable = false, + }, +}; + +static struct mhi_event_config aic100_events[] = { + { + .num_elements = 32, + .irq_moderation_ms = 0, + .irq = 0, + .channel = U32_MAX, + .priority = 1, + .mode = MHI_DB_BRST_DISABLE, + .data_type = MHI_ER_CTRL, + .hardware_event = false, + .client_managed = false, + .offload_channel = false, + }, +}; + +static struct mhi_controller_config aic100_config = { + .max_channels = 128, + .timeout_ms = 0, /* controlled by mhi_timeout */ + .buf_len = 0, + .num_channels = ARRAY_SIZE(aic100_channels), + .ch_cfg = aic100_channels, + .num_events = ARRAY_SIZE(aic100_events), + .event_cfg = aic100_events, + .use_bounce_buf = false, + .m2_no_db = false, +}; + +static int mhi_read_reg(struct mhi_controller *mhi_cntl, void __iomem *addr, u32 *out) +{ + u32 tmp = readl_relaxed(addr); + + if (tmp == U32_MAX) + return -EIO; + + *out = tmp; + + return 0; +} + +static void mhi_write_reg(struct mhi_controller *mhi_cntl, void __iomem *addr, u32 val) +{ + writel_relaxed(val, addr); +} + +static int mhi_runtime_get(struct mhi_controller *mhi_cntl) +{ + return 0; +} + +static void mhi_runtime_put(struct mhi_controller *mhi_cntl) +{ +} + +static void mhi_status_cb(struct mhi_controller *mhi_cntl, enum mhi_callback reason) +{ + struct qaic_device *qdev = pci_get_drvdata(to_pci_dev(mhi_cntl->cntrl_dev)); + + /* this event occurs in atomic context */ + if (reason == MHI_CB_FATAL_ERROR) + pci_err(qdev->pdev, "Fatal error received from device. Attempting to recover\n"); + /* this event occurs in non-atomic context */ + if (reason == MHI_CB_SYS_ERROR) + qaic_dev_reset_clean_local_state(qdev, true); +} + +static int mhi_reset_and_async_power_up(struct mhi_controller *mhi_cntl) +{ + char time_sec = 1; + int current_ee; + int ret; + + /* Reset the device to bring the device in PBL EE */ + mhi_soc_reset(mhi_cntl); + + /* + * Keep checking the execution environment(EE) after every 1 second + * interval. + */ + do { + msleep(1000); + current_ee = mhi_get_exec_env(mhi_cntl); + } while (current_ee != MHI_EE_PBL && time_sec++ <= MAX_RESET_TIME_SEC); + + /* If the device is in PBL EE retry power up */ + if (current_ee == MHI_EE_PBL) + ret = mhi_async_power_up(mhi_cntl); + else + ret = -EIO; + + return ret; +} + +struct mhi_controller *qaic_mhi_register_controller(struct pci_dev *pci_dev, void __iomem *mhi_bar, + int mhi_irq) +{ + struct mhi_controller *mhi_cntl; + int ret; + + mhi_cntl = devm_kzalloc(&pci_dev->dev, sizeof(*mhi_cntl), GFP_KERNEL); + if (!mhi_cntl) + return ERR_PTR(-ENOMEM); + + mhi_cntl->cntrl_dev = &pci_dev->dev; + + /* + * Covers the entire possible physical ram region. Remote side is + * going to calculate a size of this range, so subtract 1 to prevent + * rollover. + */ + mhi_cntl->iova_start = 0; + mhi_cntl->iova_stop = PHYS_ADDR_MAX - 1; + mhi_cntl->status_cb = mhi_status_cb; + mhi_cntl->runtime_get = mhi_runtime_get; + mhi_cntl->runtime_put = mhi_runtime_put; + mhi_cntl->read_reg = mhi_read_reg; + mhi_cntl->write_reg = mhi_write_reg; + mhi_cntl->regs = mhi_bar; + mhi_cntl->reg_len = SZ_4K; + mhi_cntl->nr_irqs = 1; + mhi_cntl->irq = devm_kmalloc(&pci_dev->dev, sizeof(*mhi_cntl->irq), GFP_KERNEL); + + if (!mhi_cntl->irq) + return ERR_PTR(-ENOMEM); + + mhi_cntl->irq[0] = mhi_irq; + mhi_cntl->fw_image = "qcom/aic100/sbl.bin"; + + /* use latest configured timeout */ + aic100_config.timeout_ms = mhi_timeout_ms; + ret = mhi_register_controller(mhi_cntl, &aic100_config); + if (ret) { + pci_err(pci_dev, "mhi_register_controller failed %d\n", ret); + return ERR_PTR(ret); + } + + ret = mhi_prepare_for_power_up(mhi_cntl); + if (ret) { + pci_err(pci_dev, "mhi_prepare_for_power_up failed %d\n", ret); + goto prepare_power_up_fail; + } + + ret = mhi_async_power_up(mhi_cntl); + /* + * If EIO is returned it is possible that device is in SBL EE, which is + * undesired. SOC reset the device and try to power up again. + */ + if (ret == -EIO && MHI_EE_SBL == mhi_get_exec_env(mhi_cntl)) { + pci_err(pci_dev, "Found device in SBL at MHI init. Attempting a reset.\n"); + ret = mhi_reset_and_async_power_up(mhi_cntl); + } + + if (ret) { + pci_err(pci_dev, "mhi_async_power_up failed %d\n", ret); + goto power_up_fail; + } + + return mhi_cntl; + +power_up_fail: + mhi_unprepare_after_power_down(mhi_cntl); +prepare_power_up_fail: + mhi_unregister_controller(mhi_cntl); + return ERR_PTR(ret); +} + +void qaic_mhi_free_controller(struct mhi_controller *mhi_cntl, bool link_up) +{ + mhi_power_down(mhi_cntl, link_up); + mhi_unprepare_after_power_down(mhi_cntl); + mhi_unregister_controller(mhi_cntl); +} + +void qaic_mhi_start_reset(struct mhi_controller *mhi_cntl) +{ + mhi_power_down(mhi_cntl, true); +} + +void qaic_mhi_reset_done(struct mhi_controller *mhi_cntl) +{ + struct pci_dev *pci_dev = container_of(mhi_cntl->cntrl_dev, struct pci_dev, dev); + int ret; + + ret = mhi_async_power_up(mhi_cntl); + if (ret) + pci_err(pci_dev, "mhi_async_power_up failed after reset %d\n", ret); +} diff --git a/drivers/accel/qaic/mhi_controller.h b/drivers/accel/qaic/mhi_controller.h new file mode 100644 index 0000000..c105e93 --- /dev/null +++ b/drivers/accel/qaic/mhi_controller.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0-only + * + * Copyright (c) 2019-2020, The Linux Foundation. All rights reserved. + * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#ifndef MHICONTROLLERQAIC_H_ +#define MHICONTROLLERQAIC_H_ + +struct mhi_controller *qaic_mhi_register_controller(struct pci_dev *pci_dev, void __iomem *mhi_bar, + int mhi_irq); +void qaic_mhi_free_controller(struct mhi_controller *mhi_cntl, bool link_up); +void qaic_mhi_start_reset(struct mhi_controller *mhi_cntl); +void qaic_mhi_reset_done(struct mhi_controller *mhi_cntl); + +#endif /* MHICONTROLLERQAIC_H_ */