From patchwork Wed Apr 18 15:31:36 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Srinivas Kandagatla X-Patchwork-Id: 133644 Delivered-To: patch@linaro.org Received: by 10.46.66.142 with SMTP id h14csp35777ljf; Wed, 18 Apr 2018 08:36:24 -0700 (PDT) X-Google-Smtp-Source: AIpwx4+Pg1hzFzZT2ZlJCIlbey4tDuKf4gTYc6rjCkm1mC4fNqCm0sjTh8xnUnggUnBGBXDjN9Xo X-Received: by 2002:adf:8b44:: with SMTP id v4-v6mr1918719wra.99.1524065784892; Wed, 18 Apr 2018 08:36:24 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1524065784; cv=none; d=google.com; s=arc-20160816; b=NK0Phe9TBHV53gfJwioWA5rYnKrLneRqKOC8CJqp2wDM2lRP2UxpXsy6lSe1OFuKwK 1biE7nus6lEGEVWaMDYMhi7Bbm9scdqZZpA4o7HcguD0DkUwQjEUuGd408Xjq5PbFF7k 7qg99UAzPkTa3M/jse1IkJ0nWl1QfW+er1ZMGFSDKDvReDrCDri0JhypR4uD33vhFQjI 6VrUt5JdPCzPkZMaAvTvnpux3linxoBLW67NSVp4cWUMu4trzQ+kLqRPfuQ2hoQkR0hu K7JHGj4YX93FC3HMFAyjTSkJiy7JSe1oWBBdeZMLI0IjMzjsvJVYTGKeQxj7v5i/EjSO aWAw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:content-transfer-encoding:mime-version :list-subscribe:list-help:list-post:list-archive:list-unsubscribe :list-id:precedence:subject:cc:references:in-reply-to:message-id :date:to:from:dkim-signature:delivered-to:arc-authentication-results; bh=yd5fWm5URAyx/oi1EG6A4oLFxOMJWV4MDx0DagOqis0=; b=JmUqJfvLPh+3fzYO7Lr9WyrOnpzrFnrkhU9iDGrIAkNfjbWy/eyIWZdThfHn0udYvP mMSWJfLwVG4hRHx3O+wyccQEj/DYy+lpoFJcqPSJ3has3uSJrK5PHR34IbF5kg6iKDRs iggUW09Vgg5ZTEkgHWBZGIqIp+YGBjPbccH2vKV6Yn7m4nmy34mIpj61MZ/KkBota7UV Ywvxfd7irJCNTbxk2PkYvWAkEdaCx/cxQVESLlfXXuieHiY05YYZPq+BDybFA4CWhZ3z uK/p16qYh1gA1GHCzGkCkc73eg1jpZC/3ma3ceL0BMR6ASLOAYFJ/wq0GHFVl4yfPYQN pDBQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=neutral (body hash did not verify) header.i=@linaro.org header.s=google header.b=gHG53y4i; spf=pass (google.com: domain of alsa-devel-bounces@alsa-project.org designates 77.48.224.243 as permitted sender) smtp.mailfrom=alsa-devel-bounces@alsa-project.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from alsa0.perex.cz (alsa0.perex.cz. [77.48.224.243]) by mx.google.com with ESMTP id q4si824154wma.210.2018.04.18.08.36.24; Wed, 18 Apr 2018 08:36:24 -0700 (PDT) Received-SPF: pass (google.com: domain of alsa-devel-bounces@alsa-project.org designates 77.48.224.243 as permitted sender) client-ip=77.48.224.243; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@linaro.org header.s=google header.b=gHG53y4i; spf=pass (google.com: domain of alsa-devel-bounces@alsa-project.org designates 77.48.224.243 as permitted sender) smtp.mailfrom=alsa-devel-bounces@alsa-project.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 6BB1B2676AC; Wed, 18 Apr 2018 17:36:07 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id F08B2267680; Wed, 18 Apr 2018 17:36:01 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on mail1.perex.cz X-Spam-Level: X-Spam-Status: No, score=-0.1 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_PASS autolearn=disabled version=3.4.0 Received: from mail-wr0-f195.google.com (mail-wr0-f195.google.com [209.85.128.195]) by alsa0.perex.cz (Postfix) with ESMTP id 7006E266E30 for ; Wed, 18 Apr 2018 17:35:59 +0200 (CEST) Received: by mail-wr0-f195.google.com with SMTP id w3-v6so6050303wrg.2 for ; Wed, 18 Apr 2018 08:35:59 -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; bh=5D/DJy1uqjOS4U4AJ0LfzalSNcqifyYxRFwRNivGeqQ=; b=gHG53y4iufpvfZhwbQVgehQMLwEUfd9+0LmPY45t6TLMQc8zM8fYaTGC9ekI4oLHMW b9zMtWY1DscAKCYCYtV0/5p+qN2ROPDYhnypzdhRBDS5xbFjEiha5GHDwxa1Dgq78QCP ZzkZJMjbX7CArtRLPPpC6qIjWBeKQLfRRZLdo= 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; bh=5D/DJy1uqjOS4U4AJ0LfzalSNcqifyYxRFwRNivGeqQ=; b=Myj45MwIswLJe8jQlXiGm9TdZ7R16aSTvIgQFItffsydRsFGx+iZWjrs9fLt8uYuC6 7/xXKlEIDr5AmiddUIdfYR1/4IioqaSQXYoK5FFGS40dkodRlmj3PuJLZ6qeWL05mm3N kEwPS9OL8Jl/ToqC1nBHbGgV377aqdkkTaKtR/KJlplM1QjvMP4I/FIXfv5bs6LjXvfN R6JY9Zz+lhw7Ht1qILdYij4171SnehU1LnIpDmxpTYnx64ukFoqtGmvgG/g1qAS4cpdj i1IJCXziqp5JFMYmU+hbHbOT12LrrKTROYS7PyyPpsJi3tW1iw5T1ZPyH2q4QfI/M36u eU6A== X-Gm-Message-State: ALQs6tCyuzYUQ5iTEaK8tebF+n5qQjUiul/E49JaaJYtRINmK1Nt5N1Y Vk5PXuK2kZEEefSI8JocXJmaWA== X-Received: by 10.28.230.28 with SMTP id d28mr2206694wmh.92.1524065758588; Wed, 18 Apr 2018 08:35:58 -0700 (PDT) Received: from localhost.localdomain (cpc90716-aztw32-2-0-cust92.18-1.cable.virginm.net. [86.26.100.93]) by smtp.gmail.com with ESMTPSA id x67sm2529314wma.23.2018.04.18.08.35.57 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 18 Apr 2018 08:35:57 -0700 (PDT) From: srinivas.kandagatla@linaro.org To: andy.gross@linaro.org, broonie@kernel.org, linux-arm-msm@vger.kernel.org, alsa-devel@alsa-project.org, robh+dt@kernel.org Date: Wed, 18 Apr 2018 16:31:36 +0100 Message-Id: <20180418153157.1960-3-srinivas.kandagatla@linaro.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180418153157.1960-1-srinivas.kandagatla@linaro.org> References: <20180418153157.1960-1-srinivas.kandagatla@linaro.org> Cc: mark.rutland@arm.com, devicetree@vger.kernel.org, bgoswami@codeaurora.org, rohkumar@qti.qualcomm.com, gregkh@linuxfoundation.org, plai@codeaurora.org, lgirdwood@gmail.com, tiwai@suse.com, david.brown@linaro.org, Srinivas Kandagatla , linux-arm-kernel@lists.infradead.org, spatakok@qti.qualcomm.com, linux-kernel@vger.kernel.org Subject: [alsa-devel] [PATCH v5 02/23] soc: qcom: Add APR bus driver X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org From: Srinivas Kandagatla This patch adds support toi APR bus (Asynchronous Packet Router) driver. ARP driver is made as a bus driver so that the apr devices can added removed more dynamically depending on the state of the services on the dsp. APR is used for communication between application processor and QDSP to use services on QDSP like Audio and others. Signed-off-by: Srinivas Kandagatla Reviewed-and-tested-by: Rohit kumar --- drivers/soc/qcom/Kconfig | 9 + drivers/soc/qcom/Makefile | 1 + drivers/soc/qcom/apr.c | 385 ++++++++++++++++++++++++++++++++++++++++ include/linux/mod_devicetable.h | 11 ++ include/linux/soc/qcom/apr.h | 132 ++++++++++++++ 5 files changed, 538 insertions(+) create mode 100644 drivers/soc/qcom/apr.c create mode 100644 include/linux/soc/qcom/apr.h -- 2.16.2 _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig index 5c4535b545cc..d053f2634c67 100644 --- a/drivers/soc/qcom/Kconfig +++ b/drivers/soc/qcom/Kconfig @@ -108,4 +108,13 @@ config QCOM_WCNSS_CTRL Client driver for the WCNSS_CTRL SMD channel, used to download nv firmware to a newly booted WCNSS chip. +config QCOM_APR + tristate "Qualcomm APR Bus (Asynchronous Packet Router)" + depends on ARCH_QCOM + depends on RPMSG + help + Enable APR IPC protocol support between + application processor and QDSP6. APR is + used by audio driver to configure QDSP6 + ASM, ADM and AFE modules. endmenu diff --git a/drivers/soc/qcom/Makefile b/drivers/soc/qcom/Makefile index dcebf2814e6d..39de5dee55d9 100644 --- a/drivers/soc/qcom/Makefile +++ b/drivers/soc/qcom/Makefile @@ -12,3 +12,4 @@ obj-$(CONFIG_QCOM_SMEM_STATE) += smem_state.o obj-$(CONFIG_QCOM_SMP2P) += smp2p.o obj-$(CONFIG_QCOM_SMSM) += smsm.o obj-$(CONFIG_QCOM_WCNSS_CTRL) += wcnss_ctrl.o +obj-$(CONFIG_QCOM_APR) += apr.o diff --git a/drivers/soc/qcom/apr.c b/drivers/soc/qcom/apr.c new file mode 100644 index 000000000000..6c449e350ddf --- /dev/null +++ b/drivers/soc/qcom/apr.c @@ -0,0 +1,385 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2011-2017, The Linux Foundation +// Copyright (c) 2018, Linaro Limited + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct apr { + struct rpmsg_endpoint *ch; + struct device *dev; + spinlock_t svcs_lock; + struct list_head svcs; + int dest_domain_id; +}; + +/** + * apr_send_pkt() - Send a apr message from apr device + * + * @adev: Pointer to previously registered apr device. + * @buf: Pointer to buffer to send + * + * Return: Will be an negative on packet size on success. + */ +int apr_send_pkt(struct apr_device *adev, void *buf) +{ + struct apr *apr = dev_get_drvdata(adev->dev.parent); + struct apr_hdr *hdr; + unsigned long flags; + int ret; + + spin_lock_irqsave(&adev->lock, flags); + + hdr = (struct apr_hdr *)buf; + hdr->src_domain = APR_DOMAIN_APPS; + hdr->src_svc = adev->svc_id; + hdr->dest_domain = adev->domain_id; + hdr->dest_svc = adev->svc_id; + + ret = rpmsg_send(apr->ch, buf, hdr->pkt_size); + if (ret) { + dev_err(&adev->dev, "Unable to send APR pkt %d\n", + hdr->pkt_size); + } else { + ret = hdr->pkt_size; + } + + spin_unlock_irqrestore(&adev->lock, flags); + + return ret; +} +EXPORT_SYMBOL_GPL(apr_send_pkt); + +static void apr_dev_release(struct device *dev) +{ + struct apr_device *adev = to_apr_device(dev); + + kfree(adev); +} + +static int apr_callback(struct rpmsg_device *rpdev, void *buf, + int len, void *priv, u32 addr) +{ + struct apr *apr = dev_get_drvdata(&rpdev->dev); + struct apr_client_message data; + struct apr_device *p, *c_svc = NULL; + struct apr_driver *adrv = NULL; + struct apr_hdr *hdr; + unsigned long flags; + uint16_t hdr_size; + uint16_t msg_type; + uint16_t ver; + uint16_t svc; + + if (len <= APR_HDR_SIZE) { + dev_err(apr->dev, "APR: Improper apr pkt received:%p %d\n", + buf, len); + return -EINVAL; + } + + hdr = buf; + ver = APR_HDR_FIELD_VER(hdr->hdr_field); + if (ver > APR_PKT_VER + 1) + return -EINVAL; + + hdr_size = APR_HDR_FIELD_SIZE_BYTES(hdr->hdr_field); + if (hdr_size < APR_HDR_SIZE) { + dev_err(apr->dev, "APR: Wrong hdr size:%d\n", hdr_size); + return -EINVAL; + } + + if (hdr->pkt_size < APR_HDR_SIZE) { + dev_err(apr->dev, "APR: Wrong paket size\n"); + return -EINVAL; + } + + msg_type = APR_HDR_FIELD_MT(hdr->hdr_field); + if (msg_type >= APR_MSG_TYPE_MAX && msg_type != APR_BASIC_RSP_RESULT) { + dev_err(apr->dev, "APR: Wrong message type: %d\n", msg_type); + return -EINVAL; + } + + if (hdr->src_domain >= APR_DOMAIN_MAX || + hdr->dest_domain >= APR_DOMAIN_MAX || + hdr->src_svc >= APR_SVC_MAX || + hdr->dest_svc >= APR_SVC_MAX) { + dev_err(apr->dev, "APR: Wrong APR header\n"); + return -EINVAL; + } + + svc = hdr->dest_svc; + spin_lock_irqsave(&apr->svcs_lock, flags); + list_for_each_entry(p, &apr->svcs, node) { + if (svc == p->svc_id) { + c_svc = p; + if (c_svc->dev.driver) + adrv = to_apr_driver(c_svc->dev.driver); + break; + } + } + spin_unlock_irqrestore(&apr->svcs_lock, flags); + + if (!adrv) { + dev_err(apr->dev, "APR: service is not registered\n"); + return -EINVAL; + } + + data.payload_size = hdr->pkt_size - hdr_size; + data.opcode = hdr->opcode; + data.src_port = hdr->src_port; + data.dest_port = hdr->dest_port; + data.token = hdr->token; + data.msg_type = msg_type; + + if (data.payload_size > 0) + data.payload = buf + hdr_size; + + adrv->callback(c_svc, &data); + + return 0; +} + +static int apr_device_match(struct device *dev, struct device_driver *drv) +{ + struct apr_device *adev = to_apr_device(dev); + struct apr_driver *adrv = to_apr_driver(drv); + const struct apr_device_id *id = adrv->id_table; + + /* Attempt an OF style match first */ + if (of_driver_match_device(dev, drv)) + return 1; + + if (!id) + return 0; + + while (id->domain_id != 0 || id->svc_id != 0) { + if (id->domain_id == adev->domain_id && + id->svc_id == adev->svc_id) + return 1; + id++; + } + + return 0; +} + +static int apr_device_probe(struct device *dev) +{ + struct apr_device *adev = to_apr_device(dev); + struct apr_driver *adrv = to_apr_driver(dev->driver); + + return adrv->probe(adev); +} + +static int apr_device_remove(struct device *dev) +{ + struct apr_device *adev = to_apr_device(dev); + struct apr_driver *adrv; + struct apr *apr = dev_get_drvdata(adev->dev.parent); + + if (dev->driver) { + adrv = to_apr_driver(dev->driver); + if (adrv->remove) + adrv->remove(adev); + spin_lock(&apr->svcs_lock); + list_del(&adev->node); + spin_unlock(&apr->svcs_lock); + } + + return 0; +} + +static int apr_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + struct apr_device *adev = to_apr_device(dev); + int ret; + + ret = of_device_uevent_modalias(dev, env); + if (ret != -ENODEV) + return ret; + + return add_uevent_var(env, "MODALIAS= apr:%s", adev->name); +} + +struct bus_type aprbus_type = { + .name = "aprbus", + .match = apr_device_match, + .probe = apr_device_probe, + .uevent = apr_uevent, + .remove = apr_device_remove, +}; +EXPORT_SYMBOL_GPL(aprbus_type); + +static int apr_add_device(struct device *dev, struct device_node *np, + const struct apr_device_id *id) +{ + struct apr *apr = dev_get_drvdata(dev); + struct apr_device *adev = NULL; + + adev = kzalloc(sizeof(*adev), GFP_KERNEL); + if (!adev) + return -ENOMEM; + + spin_lock_init(&adev->lock); + + adev->svc_id = id->svc_id; + adev->domain_id = id->domain_id; + adev->version = id->svc_version; + if (np) + strncpy(adev->name, np->name, APR_NAME_SIZE); + else + strncpy(adev->name, id->name, APR_NAME_SIZE); + + dev_set_name(&adev->dev, "aprsvc:%s:%x:%x", adev->name, + id->domain_id, id->svc_id); + + adev->dev.bus = &aprbus_type; + adev->dev.parent = dev; + adev->dev.of_node = np; + adev->dev.release = apr_dev_release; + adev->dev.driver = NULL; + + spin_lock(&apr->svcs_lock); + list_add_tail(&adev->node, &apr->svcs); + spin_unlock(&apr->svcs_lock); + + dev_info(dev, "Adding APR dev: %s\n", dev_name(&adev->dev)); + + return device_register(&adev->dev); +} + +static void of_register_apr_devices(struct device *dev) +{ + struct apr *apr = dev_get_drvdata(dev); + struct device_node *node; + + for_each_child_of_node(dev->of_node, node) { + struct apr_device_id id = { {0} }; + + if (of_property_read_u32(node, "reg", &id.svc_id)) + continue; + + id.domain_id = apr->dest_domain_id; + + if (apr_add_device(dev, node, &id)) + dev_err(dev, "Failed to add arp %d svc\n", id.svc_id); + } +} + +static int apr_probe(struct rpmsg_device *rpdev) +{ + struct device *dev = &rpdev->dev; + struct apr *apr; + int ret; + + apr = devm_kzalloc(dev, sizeof(*apr), GFP_KERNEL); + if (!apr) + return -ENOMEM; + + ret = of_property_read_u32(dev->of_node, "qcom,dest-domain-id", + &apr->dest_domain_id); + if (ret) { + dev_err(dev, "APR Domain ID not specified in DT\n"); + return ret; + } + + dev_set_drvdata(dev, apr); + apr->ch = rpdev->ept; + apr->dev = dev; + spin_lock_init(&apr->svcs_lock); + INIT_LIST_HEAD(&apr->svcs); + + of_register_apr_devices(dev); + + return 0; +} + +static int apr_remove_device(struct device *dev, void *null) +{ + struct apr_device *adev = to_apr_device(dev); + + device_unregister(&adev->dev); + + return 0; +} + +static void apr_remove(struct rpmsg_device *rpdev) +{ + device_for_each_child(&rpdev->dev, NULL, apr_remove_device); +} + +/* + * __apr_driver_register() - Client driver registration with aprbus + * + * @drv:Client driver to be associated with client-device. + * @owner: owning module/driver + * + * This API will register the client driver with the aprbus + * It is called from the driver's module-init function. + */ +int __apr_driver_register(struct apr_driver *drv, struct module *owner) +{ + drv->driver.bus = &aprbus_type; + drv->driver.owner = owner; + + return driver_register(&drv->driver); +} +EXPORT_SYMBOL_GPL(__apr_driver_register); + +/* + * apr_driver_unregister() - Undo effect of apr_driver_register + * + * @drv: Client driver to be unregistered + */ +void apr_driver_unregister(struct apr_driver *drv) +{ + driver_unregister(&drv->driver); +} +EXPORT_SYMBOL_GPL(apr_driver_unregister); + +static const struct of_device_id apr_of_match[] = { + { .compatible = "qcom,apr"}, + { .compatible = "qcom,apr-v2"}, + {} +}; +MODULE_DEVICE_TABLE(of, apr_of_match); + +static struct rpmsg_driver apr_driver = { + .probe = apr_probe, + .remove = apr_remove, + .callback = apr_callback, + .drv = { + .name = "qcom,apr", + .of_match_table = apr_of_match, + }, +}; + +static int __init apr_init(void) +{ + int ret; + + ret = bus_register(&aprbus_type); + if (!ret) + ret = register_rpmsg_driver(&apr_driver); + + return ret; +} + +static void __exit apr_exit(void) +{ + bus_unregister(&aprbus_type); + unregister_rpmsg_driver(&apr_driver); +} + +subsys_initcall(apr_init); +module_exit(apr_exit); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("Qualcomm APR Bus"); diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h index 7d361be2e24f..2014bd19f28e 100644 --- a/include/linux/mod_devicetable.h +++ b/include/linux/mod_devicetable.h @@ -471,6 +471,17 @@ struct slim_device_id { kernel_ulong_t driver_data; }; +#define APR_NAME_SIZE 32 +#define APR_MODULE_PREFIX "apr:" + +struct apr_device_id { + char name[APR_NAME_SIZE]; + __u32 domain_id; + __u32 svc_id; + __u32 svc_version; + kernel_ulong_t driver_data; /* Data private to the driver */ +}; + #define SPMI_NAME_SIZE 32 #define SPMI_MODULE_PREFIX "spmi:" diff --git a/include/linux/soc/qcom/apr.h b/include/linux/soc/qcom/apr.h new file mode 100644 index 000000000000..604ea7f36a69 --- /dev/null +++ b/include/linux/soc/qcom/apr.h @@ -0,0 +1,132 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2011-2017, The Linux Foundation + * Copyright (c) 2018, Linaro Limited + */ + +#ifndef __QCOM_APR_H_ +#define __QCOM_APR_H_ + +#include +#include +#include +#include + +#define APR_HDR_LEN(hdr_len) ((hdr_len)/4) + +/* + * HEADER field + * version:0:3 + * header_size : 4:7 + * message_type : 8:9 + * reserved: 10:15 + */ +#define APR_HDR_FIELD(msg_type, hdr_len, ver)\ + (((msg_type & 0x3) << 8) | ((hdr_len & 0xF) << 4) | (ver & 0xF)) + +#define APR_HDR_SIZE sizeof(struct apr_hdr) +#define APR_SEQ_CMD_HDR_FIELD APR_HDR_FIELD(APR_MSG_TYPE_SEQ_CMD, \ + APR_HDR_LEN(APR_HDR_SIZE), \ + APR_PKT_VER) +/* Version */ +#define APR_PKT_VER 0x0 + +/* Command and Response Types */ +#define APR_MSG_TYPE_EVENT 0x0 +#define APR_MSG_TYPE_CMD_RSP 0x1 +#define APR_MSG_TYPE_SEQ_CMD 0x2 +#define APR_MSG_TYPE_NSEQ_CMD 0x3 +#define APR_MSG_TYPE_MAX 0x04 + +/* APR Basic Response Message */ +#define APR_BASIC_RSP_RESULT 0x000110E8 +#define APR_RSP_ACCEPTED 0x000100BE + +struct aprv2_ibasic_rsp_result_t { + uint32_t opcode; + uint32_t status; +}; + +/* hdr field Ver [0:3], Size [4:7], Message type [8:10] */ +#define APR_HDR_FIELD_VER(h) (h & 0x000F) +#define APR_HDR_FIELD_SIZE(h) ((h & 0x00F0) >> 4) +#define APR_HDR_FIELD_SIZE_BYTES(h) (((h & 0x00F0) >> 4) * 4) +#define APR_HDR_FIELD_MT(h) ((h & 0x0300) >> 8) + +struct apr_hdr { + uint16_t hdr_field; + uint16_t pkt_size; + uint8_t src_svc; + uint8_t src_domain; + uint16_t src_port; + uint8_t dest_svc; + uint8_t dest_domain; + uint16_t dest_port; + uint32_t token; + uint32_t opcode; +}; + +struct apr_client_message { + uint16_t payload_size; + uint16_t hdr_len; + uint16_t msg_type; + uint16_t src; + uint16_t dest_svc; + uint16_t src_port; + uint16_t dest_port; + uint32_t token; + uint32_t opcode; + void *payload; +}; + +/* Bits 0 to 15 -- Minor version, Bits 16 to 31 -- Major version */ +#define APR_SVC_MAJOR_VERSION(v) ((v >> 16) & 0xFF) +#define APR_SVC_MINOR_VERSION(v) (v & 0xFF) + +struct apr_device { + struct device dev; + uint16_t svc_id; + uint16_t domain_id; + uint32_t version; + char name[APR_NAME_SIZE]; + spinlock_t lock; + struct list_head node; +}; + +#define to_apr_device(d) container_of(d, struct apr_device, dev) + +struct apr_driver { + int (*probe)(struct apr_device *sl); + int (*remove)(struct apr_device *sl); + int (*callback)(struct apr_device *a, + struct apr_client_message *d); + struct device_driver driver; + const struct apr_device_id *id_table; +}; + +#define to_apr_driver(d) container_of(d, struct apr_driver, driver) + +/* + * use a macro to avoid include chaining to get THIS_MODULE + */ +#define apr_driver_register(drv) __apr_driver_register(drv, THIS_MODULE) + +int __apr_driver_register(struct apr_driver *drv, struct module *owner); +void apr_driver_unregister(struct apr_driver *drv); + +/** + * module_apr_driver() - Helper macro for registering a aprbus driver + * @__aprbus_driver: aprbus_driver struct + * + * Helper macro for aprbus drivers which do not do anything special in + * module init/exit. This eliminates a lot of boilerplate. Each module + * may only use this macro once, and calling it replaces module_init() + * and module_exit() + */ +#define module_apr_driver(__apr_driver) \ + module_driver(__apr_driver, apr_driver_register, \ + apr_driver_unregister) + +int apr_send_pkt(struct apr_device *adev, void *buf); + +#endif /* __QCOM_APR_H_ */