From patchwork Wed Dec 2 20:39:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cristian Marussi X-Patchwork-Id: 11947107 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=-18.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,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 C6CAEC6369E for ; Wed, 2 Dec 2020 20:47:18 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id ED551221FA for ; Wed, 2 Dec 2020 20:47:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ED551221FA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:References:In-Reply-To:Message-Id:Date:Subject:To: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=GM/nUNQwE32GuHBI0IDKll1JPeY7evUajyQ/Ffykcok=; b=UT/XbWghOz/u20a9XpIUvWY3V+ /AGw4extmwrrYl6mRIuqSLderVkQqO6kEPjMaBhppd7dgPaSQ/YGUhQY8Mdo/DWu1jy3FL/sVWMEh XIA7139g7ASRhgmwx7kMjDqGNiQgLMWtHRMue3mtzu810ZOKNHDxKEMBy1JLdO0xBPyZPylE33ySi +bhw+QO9XDx1z7C2iWLdGpislY5Id3QnsVs3tVHTacL1j7qXvCWYeIl44k9Ym6XsNdhg0kAex4gLy WlrTFW9uD3ODxQaWM7M846VyU70CvShoEvU+mBGuRlXD0ou1hmFUX+ipEj/i7cFu45RRbQLCXP2fy 3ROJY5HQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kkYzb-0003uo-5z; Wed, 02 Dec 2020 20:44:51 +0000 Received: from foss.arm.com ([217.140.110.172]) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kkYvf-0002Oj-Q1 for linux-arm-kernel@lists.infradead.org; Wed, 02 Dec 2020 20:40:56 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 509E214F6; Wed, 2 Dec 2020 12:40:47 -0800 (PST) Received: from e120937-lin.home (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 50EE73F575; Wed, 2 Dec 2020 12:40:45 -0800 (PST) From: Cristian Marussi To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 11/37] firmware: arm_scmi: port Base protocol to new interface Date: Wed, 2 Dec 2020 20:39:43 +0000 Message-Id: <20201202204009.32073-12-cristian.marussi@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201202204009.32073-1-cristian.marussi@arm.com> References: <20201202204009.32073-1-cristian.marussi@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201202_154048_767749_52BA1506 X-CRM114-Status: GOOD ( 19.35 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: f.fainelli@gmail.com, vincent.guittot@linaro.org, sudeep.holla@arm.com, thara.gopinath@linaro.org, Cristian Marussi , james.quinlan@broadcom.com, Jonathan.Cameron@Huawei.com, souvik.chakravarty@arm.com, etienne.carriere@linaro.org, lukasz.luba@arm.com MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Port Base protocol to new protocol handles based interface. Signed-off-by: Cristian Marussi --- drivers/firmware/arm_scmi/base.c | 117 +++++++++++++++-------------- drivers/firmware/arm_scmi/common.h | 3 +- drivers/firmware/arm_scmi/driver.c | 14 +++- 3 files changed, 71 insertions(+), 63 deletions(-) diff --git a/drivers/firmware/arm_scmi/base.c b/drivers/firmware/arm_scmi/base.c index e7c21e925ea2..c9e5e451b377 100644 --- a/drivers/firmware/arm_scmi/base.c +++ b/drivers/firmware/arm_scmi/base.c @@ -50,30 +50,30 @@ struct scmi_base_error_notify_payld { * scmi_base_attributes_get() - gets the implementation details * that are associated with the base protocol. * - * @handle: SCMI entity handle + * @ph: SCMI protocol handle * * Return: 0 on success, else appropriate SCMI error. */ -static int scmi_base_attributes_get(const struct scmi_handle *handle) +static int scmi_base_attributes_get(const struct scmi_protocol_handle *ph) { int ret; struct scmi_xfer *t; struct scmi_msg_resp_base_attributes *attr_info; - struct scmi_revision_info *rev = handle->version; + struct scmi_revision_info *rev = ph->get_priv(ph); - ret = scmi_xfer_get_init(handle, PROTOCOL_ATTRIBUTES, - SCMI_PROTOCOL_BASE, 0, sizeof(*attr_info), &t); + ret = ph->xops->xfer_get_init(ph, PROTOCOL_ATTRIBUTES, + 0, sizeof(*attr_info), &t); if (ret) return ret; - ret = scmi_do_xfer(handle, t); + ret = ph->xops->do_xfer(ph, t); if (!ret) { attr_info = t->rx.buf; rev->num_protocols = attr_info->num_protocols; rev->num_agents = attr_info->num_agents; } - scmi_xfer_put(handle, t); + ph->xops->xfer_put(ph, t); return ret; } @@ -81,19 +81,20 @@ static int scmi_base_attributes_get(const struct scmi_handle *handle) /** * scmi_base_vendor_id_get() - gets vendor/subvendor identifier ASCII string. * - * @handle: SCMI entity handle + * @ph: SCMI protocol handle * @sub_vendor: specify true if sub-vendor ID is needed * * Return: 0 on success, else appropriate SCMI error. */ static int -scmi_base_vendor_id_get(const struct scmi_handle *handle, bool sub_vendor) +scmi_base_vendor_id_get(const struct scmi_protocol_handle *ph, bool sub_vendor) { u8 cmd; int ret, size; char *vendor_id; struct scmi_xfer *t; - struct scmi_revision_info *rev = handle->version; + struct scmi_revision_info *rev = ph->get_priv(ph); + if (sub_vendor) { cmd = BASE_DISCOVER_SUB_VENDOR; @@ -105,15 +106,15 @@ scmi_base_vendor_id_get(const struct scmi_handle *handle, bool sub_vendor) size = ARRAY_SIZE(rev->vendor_id); } - ret = scmi_xfer_get_init(handle, cmd, SCMI_PROTOCOL_BASE, 0, size, &t); + ret = ph->xops->xfer_get_init(ph, cmd, 0, size, &t); if (ret) return ret; - ret = scmi_do_xfer(handle, t); + ret = ph->xops->do_xfer(ph, t); if (!ret) memcpy(vendor_id, t->rx.buf, size); - scmi_xfer_put(handle, t); + ph->xops->xfer_put(ph, t); return ret; } @@ -123,30 +124,30 @@ scmi_base_vendor_id_get(const struct scmi_handle *handle, bool sub_vendor) * implementation 32-bit version. The format of the version number is * vendor-specific * - * @handle: SCMI entity handle + * @ph: SCMI protocol handle * * Return: 0 on success, else appropriate SCMI error. */ static int -scmi_base_implementation_version_get(const struct scmi_handle *handle) +scmi_base_implementation_version_get(const struct scmi_protocol_handle *ph) { int ret; __le32 *impl_ver; struct scmi_xfer *t; - struct scmi_revision_info *rev = handle->version; + struct scmi_revision_info *rev = ph->get_priv(ph); - ret = scmi_xfer_get_init(handle, BASE_DISCOVER_IMPLEMENT_VERSION, - SCMI_PROTOCOL_BASE, 0, sizeof(*impl_ver), &t); + ret = ph->xops->xfer_get_init(ph, BASE_DISCOVER_IMPLEMENT_VERSION, + 0, sizeof(*impl_ver), &t); if (ret) return ret; - ret = scmi_do_xfer(handle, t); + ret = ph->xops->do_xfer(ph, t); if (!ret) { impl_ver = t->rx.buf; rev->impl_ver = le32_to_cpu(*impl_ver); } - scmi_xfer_put(handle, t); + ph->xops->xfer_put(ph, t); return ret; } @@ -155,23 +156,24 @@ scmi_base_implementation_version_get(const struct scmi_handle *handle) * scmi_base_implementation_list_get() - gets the list of protocols it is * OSPM is allowed to access * - * @handle: SCMI entity handle + * @ph: SCMI protocol handle * @protocols_imp: pointer to hold the list of protocol identifiers * * Return: 0 on success, else appropriate SCMI error. */ -static int scmi_base_implementation_list_get(const struct scmi_handle *handle, - u8 *protocols_imp) +static int +scmi_base_implementation_list_get(const struct scmi_protocol_handle *ph, + u8 *protocols_imp) { u8 *list; int ret, loop; struct scmi_xfer *t; __le32 *num_skip, *num_ret; u32 tot_num_ret = 0, loop_num_ret; - struct device *dev = handle->dev; + struct device *dev = ph->dev; - ret = scmi_xfer_get_init(handle, BASE_DISCOVER_LIST_PROTOCOLS, - SCMI_PROTOCOL_BASE, sizeof(*num_skip), 0, &t); + ret = ph->xops->xfer_get_init(ph, BASE_DISCOVER_LIST_PROTOCOLS, + sizeof(*num_skip), 0, &t); if (ret) return ret; @@ -183,7 +185,7 @@ static int scmi_base_implementation_list_get(const struct scmi_handle *handle, /* Set the number of protocols to be skipped/already read */ *num_skip = cpu_to_le32(tot_num_ret); - ret = scmi_do_xfer(handle, t); + ret = ph->xops->do_xfer(ph, t); if (ret) break; @@ -198,10 +200,10 @@ static int scmi_base_implementation_list_get(const struct scmi_handle *handle, tot_num_ret += loop_num_ret; - scmi_reset_rx_to_maxsz(handle, t); + ph->xops->reset_rx_to_maxsz(ph, t); } while (loop_num_ret); - scmi_xfer_put(handle, t); + ph->xops->xfer_put(ph, t); return ret; } @@ -209,7 +211,7 @@ static int scmi_base_implementation_list_get(const struct scmi_handle *handle, /** * scmi_base_discover_agent_get() - discover the name of an agent * - * @handle: SCMI entity handle + * @ph: SCMI protocol handle * @id: Agent identifier * @name: Agent identifier ASCII string * @@ -218,63 +220,63 @@ static int scmi_base_implementation_list_get(const struct scmi_handle *handle, * * Return: 0 on success, else appropriate SCMI error. */ -static int scmi_base_discover_agent_get(const struct scmi_handle *handle, +static int scmi_base_discover_agent_get(const struct scmi_protocol_handle *ph, int id, char *name) { int ret; struct scmi_xfer *t; - ret = scmi_xfer_get_init(handle, BASE_DISCOVER_AGENT, - SCMI_PROTOCOL_BASE, sizeof(__le32), - SCMI_MAX_STR_SIZE, &t); + ret = ph->xops->xfer_get_init(ph, BASE_DISCOVER_AGENT, + sizeof(__le32), SCMI_MAX_STR_SIZE, &t); if (ret) return ret; put_unaligned_le32(id, t->tx.buf); - ret = scmi_do_xfer(handle, t); + ret = ph->xops->do_xfer(ph, t); if (!ret) strlcpy(name, t->rx.buf, SCMI_MAX_STR_SIZE); - scmi_xfer_put(handle, t); + ph->xops->xfer_put(ph, t); return ret; } -static int scmi_base_error_notify(const struct scmi_handle *handle, bool enable) +static int scmi_base_error_notify(const struct scmi_protocol_handle *ph, + bool enable) { int ret; u32 evt_cntl = enable ? BASE_TP_NOTIFY_ALL : 0; struct scmi_xfer *t; struct scmi_msg_base_error_notify *cfg; - ret = scmi_xfer_get_init(handle, BASE_NOTIFY_ERRORS, - SCMI_PROTOCOL_BASE, sizeof(*cfg), 0, &t); + ret = ph->xops->xfer_get_init(ph, BASE_NOTIFY_ERRORS, + sizeof(*cfg), 0, &t); if (ret) return ret; cfg = t->tx.buf; cfg->event_control = cpu_to_le32(evt_cntl); - ret = scmi_do_xfer(handle, t); + ret = ph->xops->do_xfer(ph, t); - scmi_xfer_put(handle, t); + ph->xops->xfer_put(ph, t); return ret; } -static int scmi_base_set_notify_enabled(const void *handle, +static int scmi_base_set_notify_enabled(const void *ph, u8 evt_id, u32 src_id, bool enable) { int ret; - ret = scmi_base_error_notify(handle, enable); + ret = scmi_base_error_notify(ph, enable); if (ret) pr_debug("FAIL_ENABLED - evt[%X] ret:%d\n", evt_id, ret); return ret; } -static void *scmi_base_fill_custom_report(const void *handle, +static void *scmi_base_fill_custom_report(const void *ph, u8 evt_id, ktime_t timestamp, const void *payld, size_t payld_sz, void *report, u32 *src_id) @@ -326,17 +328,16 @@ static const struct scmi_protocol_events base_protocol_events = { .num_sources = SCMI_BASE_NUM_SOURCES, }; -int scmi_base_protocol_init(struct scmi_handle *h) +static int scmi_base_protocol_init(const struct scmi_protocol_handle *ph) { int id, ret; u8 *prot_imp; u32 version; char name[SCMI_MAX_STR_SIZE]; - const struct scmi_handle *handle = h; - struct device *dev = handle->dev; - struct scmi_revision_info *rev = handle->version; + struct device *dev = ph->dev; + struct scmi_revision_info *rev = scmi_get_revision_area(ph); - ret = scmi_version_get(handle, SCMI_PROTOCOL_BASE, &version); + ret = ph->xops->version_get(ph, &version); if (ret) return ret; @@ -346,13 +347,15 @@ int scmi_base_protocol_init(struct scmi_handle *h) rev->major_ver = PROTOCOL_REV_MAJOR(version), rev->minor_ver = PROTOCOL_REV_MINOR(version); + ph->set_priv(ph, rev); + + scmi_base_attributes_get(ph); + scmi_base_vendor_id_get(ph, false); + scmi_base_vendor_id_get(ph, true); + scmi_base_implementation_version_get(ph); + scmi_base_implementation_list_get(ph, prot_imp); - scmi_base_attributes_get(handle); - scmi_base_vendor_id_get(handle, false); - scmi_base_vendor_id_get(handle, true); - scmi_base_implementation_version_get(handle); - scmi_base_implementation_list_get(handle, prot_imp); - scmi_setup_protocol_implemented(handle, prot_imp); + scmi_setup_protocol_implemented(ph, prot_imp); dev_info(dev, "SCMI Protocol v%d.%d '%s:%s' Firmware version 0x%x\n", rev->major_ver, rev->minor_ver, rev->vendor_id, @@ -361,7 +364,7 @@ int scmi_base_protocol_init(struct scmi_handle *h) rev->num_agents); for (id = 0; id < rev->num_agents; id++) { - scmi_base_discover_agent_get(handle, id, name); + scmi_base_discover_agent_get(ph, id, name); dev_dbg(dev, "Agent %d: %s\n", id, name); } @@ -370,7 +373,7 @@ int scmi_base_protocol_init(struct scmi_handle *h) static const struct scmi_protocol scmi_base = { .id = SCMI_PROTOCOL_BASE, - .init = &scmi_base_protocol_init, + .init_instance = &scmi_base_protocol_init, .ops = NULL, .events = &base_protocol_events, }; diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h index 428bfba40dfd..c7b48f1e5fe0 100644 --- a/drivers/firmware/arm_scmi/common.h +++ b/drivers/firmware/arm_scmi/common.h @@ -221,10 +221,9 @@ int scmi_handle_put(const struct scmi_handle *handle); struct scmi_handle *scmi_handle_get(struct device *dev); void scmi_set_handle(struct scmi_device *scmi_dev); int scmi_version_get(const struct scmi_handle *h, u8 protocol, u32 *version); -void scmi_setup_protocol_implemented(const struct scmi_handle *handle, +void scmi_setup_protocol_implemented(const struct scmi_protocol_handle *ph, u8 *prot_imp); -int scmi_base_protocol_init(struct scmi_handle *h); typedef int (*scmi_prot_init_fn_t)(struct scmi_handle *); typedef int (*scmi_prot_init_ph_fn_t)(const struct scmi_protocol_handle *); diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c index b936cf47cd7d..b76c06b8bbc3 100644 --- a/drivers/firmware/arm_scmi/driver.c +++ b/drivers/firmware/arm_scmi/driver.c @@ -883,10 +883,11 @@ scmi_get_protocol_operations(struct scmi_handle *handle, u8 protocol_id, return pi->proto->ops; } -void scmi_setup_protocol_implemented(const struct scmi_handle *handle, +void scmi_setup_protocol_implemented(const struct scmi_protocol_handle *ph, u8 *prot_imp) { - struct scmi_info *info = handle_to_scmi_info(handle); + const struct scmi_protocol_instance *pi = ph_to_pi(ph); + struct scmi_info *info = handle_to_scmi_info(pi->handle); info->protocols_imp = prot_imp; } @@ -1265,9 +1266,14 @@ static int scmi_probe(struct platform_device *pdev) if (scmi_notification_init(handle)) dev_err(dev, "SCMI Notifications NOT available.\n"); - ret = scmi_base_protocol_init(handle); + /* + * Trigger SCMI Base protocol initialization. + * It's mandatory and won't be ever released/deinit until the + * SCMI stack is shutdown/unloaded as a whole. + */ + ret = scmi_acquire_protocol(handle, SCMI_PROTOCOL_BASE); if (ret) { - dev_err(dev, "unable to communicate with SCMI(%d)\n", ret); + dev_err(dev, "unable to communicate with SCMI\n"); return ret; }