From patchwork Wed Jul 10 17:31:47 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cristian Marussi X-Patchwork-Id: 13729532 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 1F8CFC3DA41 for ; Wed, 10 Jul 2024 17:33:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=98RGoBwlCBaxM9SBqHww6ZYgLuVfvP+4MP1gBMiwAUQ=; b=O+qCp5P1in1K7Ju7bR7d64ICrP jGi+iXE9/vFR5pn+EonYG31HTGcQKOQPZcnaJgZclCA6qmusyClWnHu4+iANEvLnGjynqXGsOQqSJ Ex/eHgmPfLA0fIyijwSk2FYURaE85PngkxXvddkT//bvUnAYn59fnjFO771Rkzw6SIuPsN/8ezgZh H8g5Flz2P40ezRoeG/DkPCyqW+SDFGli6fltoC8WPT81jNW+7XaqBP2d37nLed1VjshPpx9PTWhkK 0na1o/W31itCRbRIlmsxIbwBi9MLOVjJ5RNyQFSI5NlcEYGfsjTBcAMZ+ft0gQex4mjP6gjvwLstl IIpOJ1Bg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sRbBi-0000000BJPx-3Qsq; Wed, 10 Jul 2024 17:33:06 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sRbB1-0000000BJAW-1tk5 for linux-arm-kernel@lists.infradead.org; Wed, 10 Jul 2024 17:32:25 +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 29D261042; Wed, 10 Jul 2024 10:32:48 -0700 (PDT) Received: from pluto.guestnet.cambridge.arm.com (usa-sjc-mx-foss1.foss.arm.com [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 1F4DA3F766; Wed, 10 Jul 2024 10:32:19 -0700 (PDT) From: Cristian Marussi To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, arm-scmi@vger.kernel.org Cc: sudeep.holla@arm.com, james.quinlan@broadcom.com, f.fainelli@gmail.com, vincent.guittot@linaro.org, etienne.carriere@st.com, peng.fan@oss.nxp.com, michal.simek@amd.com, quic_sibis@quicinc.com, quic_nkela@quicinc.com, ptosi@google.com, dan.carpenter@linaro.org, souvik.chakravarty@arm.com, Cristian Marussi Subject: [PATCH v2 2/8] firmware: arm_scmi: Introduce packet handling helpers Date: Wed, 10 Jul 2024 18:31:47 +0100 Message-ID: <20240710173153.4060457-3-cristian.marussi@arm.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240710173153.4060457-1-cristian.marussi@arm.com> References: <20240710173153.4060457-1-cristian.marussi@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240710_103223_608307_7B5DF77A X-CRM114-Status: GOOD ( 22.26 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Introduce a pair of structures initialized to contain all the existing packet handling helpers, both for transports based on shared memory and messages. No functional change. Signed-off-by: Cristian Marussi Reviewed-by: Peng Fan --- v1 --> v2 - fixed commit message --- drivers/firmware/arm_scmi/common.h | 78 +++++++++++++++++++++-------- drivers/firmware/arm_scmi/mailbox.c | 20 ++++---- drivers/firmware/arm_scmi/msg.c | 29 +++++++---- drivers/firmware/arm_scmi/optee.c | 14 +++--- drivers/firmware/arm_scmi/shmem.c | 45 +++++++++++------ drivers/firmware/arm_scmi/smc.c | 8 +-- drivers/firmware/arm_scmi/virtio.c | 14 +++--- 7 files changed, 132 insertions(+), 76 deletions(-) diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h index d5e80a24e2d4..8e5751aaa600 100644 --- a/drivers/firmware/arm_scmi/common.h +++ b/drivers/firmware/arm_scmi/common.h @@ -4,7 +4,7 @@ * driver common header file containing some definitions, structures * and function prototypes used in all the different SCMI protocols. * - * Copyright (C) 2018-2022 ARM Ltd. + * Copyright (C) 2018-2024 ARM Ltd. */ #ifndef _SCMI_COMMON_H #define _SCMI_COMMON_H @@ -315,20 +315,39 @@ void scmi_bad_message_trace(struct scmi_chan_info *cinfo, u32 msg_hdr, /* shmem related declarations */ struct scmi_shared_mem; -void shmem_tx_prepare(struct scmi_shared_mem __iomem *shmem, - struct scmi_xfer *xfer, struct scmi_chan_info *cinfo); -u32 shmem_read_header(struct scmi_shared_mem __iomem *shmem); -void shmem_fetch_response(struct scmi_shared_mem __iomem *shmem, +/** + * struct scmi_shared_mem_operations - Transport core operations for + * Shared Memory + * + * @tx_prepare: Prepare the @xfer message for transmission on the chosen @shmem + * @read_header: Read header of the message currently hold in @shmem + * @fetch_response: Copy the message response from @shmem into @xfer + * @fetch_notification: Copy the message notification from @shmem into @xfer + * @clear_channel: Clear the @shmem channel busy flag + * @poll_done: Check if poll has completed for @xfer on @shmem + * @channel_free: Check if @shmem channel is marked as free + * @channel_intr_enabled: Check is @shmem channel has requested a completion irq + * @setup_iomap: Setup IO shared memory for channel @cinfo + */ +struct scmi_shared_mem_operations { + void (*tx_prepare)(struct scmi_shared_mem __iomem *shmem, + struct scmi_xfer *xfer, + struct scmi_chan_info *cinfo); + u32 (*read_header)(struct scmi_shared_mem __iomem *shmem); + + void (*fetch_response)(struct scmi_shared_mem __iomem *shmem, + struct scmi_xfer *xfer); + void (*fetch_notification)(struct scmi_shared_mem __iomem *shmem, + size_t max_len, struct scmi_xfer *xfer); + void (*clear_channel)(struct scmi_shared_mem __iomem *shmem); + bool (*poll_done)(struct scmi_shared_mem __iomem *shmem, struct scmi_xfer *xfer); -void shmem_fetch_notification(struct scmi_shared_mem __iomem *shmem, - size_t max_len, struct scmi_xfer *xfer); -void shmem_clear_channel(struct scmi_shared_mem __iomem *shmem); -bool shmem_poll_done(struct scmi_shared_mem __iomem *shmem, - struct scmi_xfer *xfer); -bool shmem_channel_free(struct scmi_shared_mem __iomem *shmem); -bool shmem_channel_intr_enabled(struct scmi_shared_mem __iomem *shmem); -void __iomem *setup_shmem_iomap(struct scmi_chan_info *cinfo, struct device *dev, - bool tx, struct resource *res); + bool (*channel_free)(struct scmi_shared_mem __iomem *shmem); + bool (*channel_intr_enabled)(struct scmi_shared_mem __iomem *shmem); + void __iomem *(*setup_iomap)(struct scmi_chan_info *cinfo, + struct device *dev, + bool tx, struct resource *res); +}; /* declarations for message passing transports */ struct scmi_msg_payld; @@ -336,14 +355,29 @@ struct scmi_msg_payld; /* Maximum overhead of message w.r.t. struct scmi_desc.max_msg_size */ #define SCMI_MSG_MAX_PROT_OVERHEAD (2 * sizeof(__le32)) -size_t msg_response_size(struct scmi_xfer *xfer); -size_t msg_command_size(struct scmi_xfer *xfer); -void msg_tx_prepare(struct scmi_msg_payld *msg, struct scmi_xfer *xfer); -u32 msg_read_header(struct scmi_msg_payld *msg); -void msg_fetch_response(struct scmi_msg_payld *msg, size_t len, - struct scmi_xfer *xfer); -void msg_fetch_notification(struct scmi_msg_payld *msg, size_t len, - size_t max_len, struct scmi_xfer *xfer); +/** + * struct scmi_message_operations - Transport core operations for Message + * + * @response_size: Get calculated response size for @xfer + * @command_size: Get calculated command size for @xfer + * @tx_prepare: Prepare the @xfer message for transmission on the provided @msg + * @read_header: Read header of the message currently hold in @msg + * @fetch_response: Copy the message response from @msg into @xfer + * @fetch_notification: Copy the message notification from @msg into @xfer + */ +struct scmi_message_operations { + size_t (*response_size)(struct scmi_xfer *xfer); + size_t (*command_size)(struct scmi_xfer *xfer); + void (*tx_prepare)(struct scmi_msg_payld *msg, struct scmi_xfer *xfer); + u32 (*read_header)(struct scmi_msg_payld *msg); + void (*fetch_response)(struct scmi_msg_payld *msg, size_t len, + struct scmi_xfer *xfer); + void (*fetch_notification)(struct scmi_msg_payld *msg, size_t len, + size_t max_len, struct scmi_xfer *xfer); +}; + +extern const struct scmi_shared_mem_operations scmi_shmem_ops; +extern const struct scmi_message_operations scmi_msg_ops; void scmi_notification_instance_data_set(const struct scmi_handle *handle, void *priv); diff --git a/drivers/firmware/arm_scmi/mailbox.c b/drivers/firmware/arm_scmi/mailbox.c index 886fc4eedb4a..60698efe8442 100644 --- a/drivers/firmware/arm_scmi/mailbox.c +++ b/drivers/firmware/arm_scmi/mailbox.c @@ -40,7 +40,7 @@ static void tx_prepare(struct mbox_client *cl, void *m) { struct scmi_mailbox *smbox = client_to_scmi_mailbox(cl); - shmem_tx_prepare(smbox->shmem, m, smbox->cinfo); + scmi_shmem_ops.tx_prepare(smbox->shmem, m, smbox->cinfo); } static void rx_callback(struct mbox_client *cl, void *m) @@ -56,15 +56,15 @@ static void rx_callback(struct mbox_client *cl, void *m) * a previous timed-out reply which arrived late could be wrongly * associated with the next pending transaction. */ - if (cl->knows_txdone && !shmem_channel_free(smbox->shmem)) { + if (cl->knows_txdone && !scmi_shmem_ops.channel_free(smbox->shmem)) { dev_warn(smbox->cinfo->dev, "Ignoring spurious A2P IRQ !\n"); scmi_bad_message_trace(smbox->cinfo, - shmem_read_header(smbox->shmem), + scmi_shmem_ops.read_header(smbox->shmem), MSG_MBOX_SPURIOUS); return; } - scmi_rx_callback(smbox->cinfo, shmem_read_header(smbox->shmem), NULL); + scmi_rx_callback(smbox->cinfo, scmi_shmem_ops.read_header(smbox->shmem), NULL); } static bool mailbox_chan_available(struct device_node *of_node, int idx) @@ -192,7 +192,7 @@ static int mailbox_chan_setup(struct scmi_chan_info *cinfo, struct device *dev, if (!smbox) return -ENOMEM; - smbox->shmem = setup_shmem_iomap(cinfo, dev, tx, NULL); + smbox->shmem = scmi_shmem_ops.setup_iomap(cinfo, dev, tx, NULL); if (IS_ERR(smbox->shmem)) return PTR_ERR(smbox->shmem); @@ -293,7 +293,7 @@ static void mailbox_fetch_response(struct scmi_chan_info *cinfo, { struct scmi_mailbox *smbox = cinfo->transport_info; - shmem_fetch_response(smbox->shmem, xfer); + scmi_shmem_ops.fetch_response(smbox->shmem, xfer); } static void mailbox_fetch_notification(struct scmi_chan_info *cinfo, @@ -301,7 +301,7 @@ static void mailbox_fetch_notification(struct scmi_chan_info *cinfo, { struct scmi_mailbox *smbox = cinfo->transport_info; - shmem_fetch_notification(smbox->shmem, max_len, xfer); + scmi_shmem_ops.fetch_notification(smbox->shmem, max_len, xfer); } static void mailbox_clear_channel(struct scmi_chan_info *cinfo) @@ -310,9 +310,9 @@ static void mailbox_clear_channel(struct scmi_chan_info *cinfo) struct mbox_chan *intr_chan; int ret; - shmem_clear_channel(smbox->shmem); + scmi_shmem_ops.clear_channel(smbox->shmem); - if (!shmem_channel_intr_enabled(smbox->shmem)) + if (!scmi_shmem_ops.channel_intr_enabled(smbox->shmem)) return; if (smbox->chan_platform_receiver) @@ -335,7 +335,7 @@ mailbox_poll_done(struct scmi_chan_info *cinfo, struct scmi_xfer *xfer) { struct scmi_mailbox *smbox = cinfo->transport_info; - return shmem_poll_done(smbox->shmem, xfer); + return scmi_shmem_ops.poll_done(smbox->shmem, xfer); } static const struct scmi_transport_ops scmi_mailbox_ops = { diff --git a/drivers/firmware/arm_scmi/msg.c b/drivers/firmware/arm_scmi/msg.c index d33a704e5814..f4ba38afe0bb 100644 --- a/drivers/firmware/arm_scmi/msg.c +++ b/drivers/firmware/arm_scmi/msg.c @@ -4,8 +4,8 @@ * * Derived from shm.c. * - * Copyright (C) 2019-2021 ARM Ltd. - * Copyright (C) 2020-2021 OpenSynergy GmbH + * Copyright (C) 2019-2024 ARM Ltd. + * Copyright (C) 2020-2024 OpenSynergy GmbH */ #include @@ -30,7 +30,7 @@ struct scmi_msg_payld { * * Return: transport SDU size. */ -size_t msg_command_size(struct scmi_xfer *xfer) +static size_t msg_command_size(struct scmi_xfer *xfer) { return sizeof(struct scmi_msg_payld) + xfer->tx.len; } @@ -42,7 +42,7 @@ size_t msg_command_size(struct scmi_xfer *xfer) * * Return: transport SDU size. */ -size_t msg_response_size(struct scmi_xfer *xfer) +static size_t msg_response_size(struct scmi_xfer *xfer) { return sizeof(struct scmi_msg_payld) + sizeof(__le32) + xfer->rx.len; } @@ -53,7 +53,7 @@ size_t msg_response_size(struct scmi_xfer *xfer) * @msg: transport SDU for command * @xfer: message which is being sent */ -void msg_tx_prepare(struct scmi_msg_payld *msg, struct scmi_xfer *xfer) +static void msg_tx_prepare(struct scmi_msg_payld *msg, struct scmi_xfer *xfer) { msg->msg_header = cpu_to_le32(pack_scmi_header(&xfer->hdr)); if (xfer->tx.buf) @@ -67,7 +67,7 @@ void msg_tx_prepare(struct scmi_msg_payld *msg, struct scmi_xfer *xfer) * * Return: SCMI header */ -u32 msg_read_header(struct scmi_msg_payld *msg) +static u32 msg_read_header(struct scmi_msg_payld *msg) { return le32_to_cpu(msg->msg_header); } @@ -79,8 +79,8 @@ u32 msg_read_header(struct scmi_msg_payld *msg) * @len: transport SDU size * @xfer: message being responded to */ -void msg_fetch_response(struct scmi_msg_payld *msg, size_t len, - struct scmi_xfer *xfer) +static void msg_fetch_response(struct scmi_msg_payld *msg, + size_t len, struct scmi_xfer *xfer) { size_t prefix_len = sizeof(*msg) + sizeof(msg->msg_payload[0]); @@ -100,8 +100,8 @@ void msg_fetch_response(struct scmi_msg_payld *msg, size_t len, * @max_len: maximum SCMI payload size to fetch * @xfer: notification message */ -void msg_fetch_notification(struct scmi_msg_payld *msg, size_t len, - size_t max_len, struct scmi_xfer *xfer) +static void msg_fetch_notification(struct scmi_msg_payld *msg, size_t len, + size_t max_len, struct scmi_xfer *xfer) { xfer->rx.len = min_t(size_t, max_len, len >= sizeof(*msg) ? len - sizeof(*msg) : 0); @@ -109,3 +109,12 @@ void msg_fetch_notification(struct scmi_msg_payld *msg, size_t len, /* Take a copy to the rx buffer.. */ memcpy(xfer->rx.buf, msg->msg_payload, xfer->rx.len); } + +const struct scmi_message_operations scmi_msg_ops = { + .tx_prepare = msg_tx_prepare, + .command_size = msg_command_size, + .response_size = msg_response_size, + .read_header = msg_read_header, + .fetch_response = msg_fetch_response, + .fetch_notification = msg_fetch_notification, +}; diff --git a/drivers/firmware/arm_scmi/optee.c b/drivers/firmware/arm_scmi/optee.c index d9458ef7378a..99f3b0bfb956 100644 --- a/drivers/firmware/arm_scmi/optee.c +++ b/drivers/firmware/arm_scmi/optee.c @@ -343,7 +343,7 @@ static void scmi_optee_clear_channel(struct scmi_chan_info *cinfo) struct scmi_optee_channel *channel = cinfo->transport_info; if (!channel->tee_shm) - shmem_clear_channel(channel->req.shmem); + scmi_shmem_ops.clear_channel(channel->req.shmem); } static int setup_dynamic_shmem(struct device *dev, struct scmi_optee_channel *channel) @@ -368,7 +368,7 @@ static int setup_dynamic_shmem(struct device *dev, struct scmi_optee_channel *ch static int setup_static_shmem(struct device *dev, struct scmi_chan_info *cinfo, struct scmi_optee_channel *channel) { - channel->req.shmem = setup_shmem_iomap(cinfo, dev, true, NULL); + channel->req.shmem = scmi_shmem_ops.setup_iomap(cinfo, dev, true, NULL); if (IS_ERR(channel->req.shmem)) return PTR_ERR(channel->req.shmem); @@ -472,10 +472,10 @@ static int scmi_optee_send_message(struct scmi_chan_info *cinfo, mutex_lock(&channel->mu); if (channel->tee_shm) { - msg_tx_prepare(channel->req.msg, xfer); - ret = invoke_process_msg_channel(channel, msg_command_size(xfer)); + scmi_msg_ops.tx_prepare(channel->req.msg, xfer); + ret = invoke_process_msg_channel(channel, scmi_msg_ops.command_size(xfer)); } else { - shmem_tx_prepare(channel->req.shmem, xfer, cinfo); + scmi_shmem_ops.tx_prepare(channel->req.shmem, xfer, cinfo); ret = invoke_process_smt_channel(channel); } @@ -491,9 +491,9 @@ static void scmi_optee_fetch_response(struct scmi_chan_info *cinfo, struct scmi_optee_channel *channel = cinfo->transport_info; if (channel->tee_shm) - msg_fetch_response(channel->req.msg, channel->rx_len, xfer); + scmi_msg_ops.fetch_response(channel->req.msg, channel->rx_len, xfer); else - shmem_fetch_response(channel->req.shmem, xfer); + scmi_shmem_ops.fetch_response(channel->req.shmem, xfer); } static void scmi_optee_mark_txdone(struct scmi_chan_info *cinfo, int ret, diff --git a/drivers/firmware/arm_scmi/shmem.c b/drivers/firmware/arm_scmi/shmem.c index 06f68ee0e9f8..208a289642c3 100644 --- a/drivers/firmware/arm_scmi/shmem.c +++ b/drivers/firmware/arm_scmi/shmem.c @@ -2,7 +2,7 @@ /* * For transport using shared mem structure. * - * Copyright (C) 2019 ARM Ltd. + * Copyright (C) 2019-2024 ARM Ltd. */ #include @@ -34,8 +34,9 @@ struct scmi_shared_mem { u8 msg_payload[]; }; -void shmem_tx_prepare(struct scmi_shared_mem __iomem *shmem, - struct scmi_xfer *xfer, struct scmi_chan_info *cinfo) +static void shmem_tx_prepare(struct scmi_shared_mem __iomem *shmem, + struct scmi_xfer *xfer, + struct scmi_chan_info *cinfo) { ktime_t stop; @@ -75,13 +76,13 @@ void shmem_tx_prepare(struct scmi_shared_mem __iomem *shmem, memcpy_toio(shmem->msg_payload, xfer->tx.buf, xfer->tx.len); } -u32 shmem_read_header(struct scmi_shared_mem __iomem *shmem) +static u32 shmem_read_header(struct scmi_shared_mem __iomem *shmem) { return ioread32(&shmem->msg_header); } -void shmem_fetch_response(struct scmi_shared_mem __iomem *shmem, - struct scmi_xfer *xfer) +static void shmem_fetch_response(struct scmi_shared_mem __iomem *shmem, + struct scmi_xfer *xfer) { size_t len = ioread32(&shmem->length); @@ -93,8 +94,8 @@ void shmem_fetch_response(struct scmi_shared_mem __iomem *shmem, memcpy_fromio(xfer->rx.buf, shmem->msg_payload + 4, xfer->rx.len); } -void shmem_fetch_notification(struct scmi_shared_mem __iomem *shmem, - size_t max_len, struct scmi_xfer *xfer) +static void shmem_fetch_notification(struct scmi_shared_mem __iomem *shmem, + size_t max_len, struct scmi_xfer *xfer) { size_t len = ioread32(&shmem->length); @@ -105,13 +106,13 @@ void shmem_fetch_notification(struct scmi_shared_mem __iomem *shmem, memcpy_fromio(xfer->rx.buf, shmem->msg_payload, xfer->rx.len); } -void shmem_clear_channel(struct scmi_shared_mem __iomem *shmem) +static void shmem_clear_channel(struct scmi_shared_mem __iomem *shmem) { iowrite32(SCMI_SHMEM_CHAN_STAT_CHANNEL_FREE, &shmem->channel_status); } -bool shmem_poll_done(struct scmi_shared_mem __iomem *shmem, - struct scmi_xfer *xfer) +static bool shmem_poll_done(struct scmi_shared_mem __iomem *shmem, + struct scmi_xfer *xfer) { u16 xfer_id; @@ -125,20 +126,20 @@ bool shmem_poll_done(struct scmi_shared_mem __iomem *shmem, SCMI_SHMEM_CHAN_STAT_CHANNEL_FREE); } -bool shmem_channel_free(struct scmi_shared_mem __iomem *shmem) +static bool shmem_channel_free(struct scmi_shared_mem __iomem *shmem) { return (ioread32(&shmem->channel_status) & SCMI_SHMEM_CHAN_STAT_CHANNEL_FREE); } -bool shmem_channel_intr_enabled(struct scmi_shared_mem __iomem *shmem) +static bool shmem_channel_intr_enabled(struct scmi_shared_mem __iomem *shmem) { return ioread32(&shmem->flags) & SCMI_SHMEM_FLAG_INTR_ENABLED; } -void __iomem *setup_shmem_iomap(struct scmi_chan_info *cinfo, - struct device *dev, bool tx, - struct resource *res) +static void __iomem *shmem_setup_iomap(struct scmi_chan_info *cinfo, + struct device *dev, bool tx, + struct resource *res) { struct device_node *shmem __free(device_node); const char *desc = tx ? "Tx" : "Rx"; @@ -174,3 +175,15 @@ void __iomem *setup_shmem_iomap(struct scmi_chan_info *cinfo, return addr; } + +const struct scmi_shared_mem_operations scmi_shmem_ops = { + .tx_prepare = shmem_tx_prepare, + .read_header = shmem_read_header, + .fetch_response = shmem_fetch_response, + .fetch_notification = shmem_fetch_notification, + .clear_channel = shmem_clear_channel, + .poll_done = shmem_poll_done, + .channel_free = shmem_channel_free, + .channel_intr_enabled = shmem_channel_intr_enabled, + .setup_iomap = shmem_setup_iomap, +}; diff --git a/drivers/firmware/arm_scmi/smc.c b/drivers/firmware/arm_scmi/smc.c index 59b6c04b52bc..4cb86386c490 100644 --- a/drivers/firmware/arm_scmi/smc.c +++ b/drivers/firmware/arm_scmi/smc.c @@ -74,7 +74,7 @@ static irqreturn_t smc_msg_done_isr(int irq, void *data) struct scmi_smc *scmi_info = data; scmi_rx_callback(scmi_info->cinfo, - shmem_read_header(scmi_info->shmem), NULL); + scmi_shmem_ops.read_header(scmi_info->shmem), NULL); return IRQ_HANDLED; } @@ -141,7 +141,7 @@ static int smc_chan_setup(struct scmi_chan_info *cinfo, struct device *dev, if (!scmi_info) return -ENOMEM; - scmi_info->shmem = setup_shmem_iomap(cinfo, dev, tx, &res); + scmi_info->shmem = scmi_shmem_ops.setup_iomap(cinfo, dev, tx, &res); if (IS_ERR(scmi_info->shmem)) return PTR_ERR(scmi_info->shmem); @@ -226,7 +226,7 @@ static int smc_send_message(struct scmi_chan_info *cinfo, */ smc_channel_lock_acquire(scmi_info, xfer); - shmem_tx_prepare(scmi_info->shmem, xfer, cinfo); + scmi_shmem_ops.tx_prepare(scmi_info->shmem, xfer, cinfo); if (scmi_info->cap_id != ULONG_MAX) arm_smccc_1_1_invoke(scmi_info->func_id, scmi_info->cap_id, 0, @@ -250,7 +250,7 @@ static void smc_fetch_response(struct scmi_chan_info *cinfo, { struct scmi_smc *scmi_info = cinfo->transport_info; - shmem_fetch_response(scmi_info->shmem, xfer); + scmi_shmem_ops.fetch_response(scmi_info->shmem, xfer); } static void smc_mark_txdone(struct scmi_chan_info *cinfo, int ret, diff --git a/drivers/firmware/arm_scmi/virtio.c b/drivers/firmware/arm_scmi/virtio.c index 4892058445ce..736a0d41a458 100644 --- a/drivers/firmware/arm_scmi/virtio.c +++ b/drivers/firmware/arm_scmi/virtio.c @@ -295,7 +295,7 @@ static void scmi_vio_complete_cb(struct virtqueue *vqueue) if (msg) { msg->rx_len = length; scmi_rx_callback(vioch->cinfo, - msg_read_header(msg->input), msg); + scmi_msg_ops.read_header(msg->input), msg); scmi_finalize_message(vioch, msg); } @@ -340,7 +340,7 @@ static void scmi_vio_deferred_tx_worker(struct work_struct *work) */ if (msg->poll_status == VIO_MSG_NOT_POLLED) scmi_rx_callback(vioch->cinfo, - msg_read_header(msg->input), msg); + scmi_msg_ops.read_header(msg->input), msg); /* Free the processed message once done */ scmi_vio_msg_release(vioch, msg); @@ -512,10 +512,10 @@ static int virtio_send_message(struct scmi_chan_info *cinfo, return -EBUSY; } - msg_tx_prepare(msg->request, xfer); + scmi_msg_ops.tx_prepare(msg->request, xfer); - sg_init_one(&sg_out, msg->request, msg_command_size(xfer)); - sg_init_one(&sg_in, msg->input, msg_response_size(xfer)); + sg_init_one(&sg_out, msg->request, scmi_msg_ops.command_size(xfer)); + sg_init_one(&sg_in, msg->input, scmi_msg_ops.response_size(xfer)); spin_lock_irqsave(&vioch->lock, flags); @@ -562,7 +562,7 @@ static void virtio_fetch_response(struct scmi_chan_info *cinfo, struct scmi_vio_msg *msg = xfer->priv; if (msg) - msg_fetch_response(msg->input, msg->rx_len, xfer); + scmi_msg_ops.fetch_response(msg->input, msg->rx_len, xfer); } static void virtio_fetch_notification(struct scmi_chan_info *cinfo, @@ -571,7 +571,7 @@ static void virtio_fetch_notification(struct scmi_chan_info *cinfo, struct scmi_vio_msg *msg = xfer->priv; if (msg) - msg_fetch_notification(msg->input, msg->rx_len, max_len, xfer); + scmi_msg_ops.fetch_notification(msg->input, msg->rx_len, max_len, xfer); } /**