From mboxrd@z Thu Jan 1 00:00:00 1970 From: nm@ti.com (Nishanth Menon) Date: Mon, 16 Jul 2018 13:06:04 -0500 Subject: [PATCH V2 3/6] mailbox: ti-msgmgr: Change message count mask to be descriptor based In-Reply-To: <20180716180607.16526-1-nm@ti.com> References: <20180716180607.16526-1-nm@ti.com> Message-ID: <20180716180607.16526-4-nm@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Change mask used to extract the message count to be descriptor based. This is to support changes for count location for various SoC solutions. Signed-off-by: Nishanth Menon --- Changes since V1: None V1: https://patchwork.kernel.org/patch/10475341/ RFC: https://patchwork.kernel.org/patch/10447671/ drivers/mailbox/ti-msgmgr.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-) diff --git a/drivers/mailbox/ti-msgmgr.c b/drivers/mailbox/ti-msgmgr.c index 91c955979008..7d2eb4b359ba 100644 --- a/drivers/mailbox/ti-msgmgr.c +++ b/drivers/mailbox/ti-msgmgr.c @@ -44,6 +44,7 @@ struct ti_msgmgr_valid_queue_desc { * @max_messages: Number of messages * @data_first_reg: First data register for proxy data region * @data_last_reg: Last data register for proxy data region + * @status_cnt_mask: Mask for getting the status value * @tx_polled: Do I need to use polled mechanism for tx * @tx_poll_timeout_ms: Timeout in ms if polled * @valid_queues: List of Valid queues that the processor can access @@ -58,6 +59,7 @@ struct ti_msgmgr_desc { u8 max_messages; u8 data_first_reg; u8 data_last_reg; + u32 status_cnt_mask; bool tx_polled; int tx_poll_timeout_ms; const struct ti_msgmgr_valid_queue_desc *valid_queues; @@ -116,20 +118,24 @@ struct ti_msgmgr_inst { /** * ti_msgmgr_queue_get_num_messages() - Get the number of pending messages + * @d: Description of message manager * @qinst: Queue instance for which we check the number of pending messages * * Return: number of messages pending in the queue (0 == no pending messages) */ -static inline int ti_msgmgr_queue_get_num_messages(struct ti_queue_inst *qinst) +static inline int +ti_msgmgr_queue_get_num_messages(const struct ti_msgmgr_desc *d, + struct ti_queue_inst *qinst) { u32 val; + u32 status_cnt_mask = d->status_cnt_mask; /* * We cannot use relaxed operation here - update may happen * real-time. */ - val = readl(qinst->queue_state) & Q_STATE_ENTRY_COUNT_MASK; - val >>= __ffs(Q_STATE_ENTRY_COUNT_MASK); + val = readl(qinst->queue_state) & status_cnt_mask; + val >>= __ffs(status_cnt_mask); return val; } @@ -167,8 +173,9 @@ static irqreturn_t ti_msgmgr_queue_rx_interrupt(int irq, void *p) return IRQ_NONE; } + desc = inst->desc; /* Do I actually have messages to read? */ - msg_count = ti_msgmgr_queue_get_num_messages(qinst); + msg_count = ti_msgmgr_queue_get_num_messages(desc, qinst); if (!msg_count) { /* Shared IRQ? */ dev_dbg(dev, "Spurious event - 0 pending data!\n"); @@ -181,7 +188,6 @@ static irqreturn_t ti_msgmgr_queue_rx_interrupt(int irq, void *p) * of how many bytes I should be reading. Let the client figure this * out.. I just read the full message and pass it on.. */ - desc = inst->desc; message.len = desc->max_message_size; message.buf = (u8 *)qinst->rx_buff; @@ -224,12 +230,14 @@ static irqreturn_t ti_msgmgr_queue_rx_interrupt(int irq, void *p) static bool ti_msgmgr_queue_peek_data(struct mbox_chan *chan) { struct ti_queue_inst *qinst = chan->con_priv; + struct device *dev = chan->mbox->dev; + struct ti_msgmgr_inst *inst = dev_get_drvdata(dev); int msg_count; if (qinst->is_tx) return false; - msg_count = ti_msgmgr_queue_get_num_messages(qinst); + msg_count = ti_msgmgr_queue_get_num_messages(inst->desc, qinst); return msg_count ? true : false; } @@ -243,12 +251,14 @@ static bool ti_msgmgr_queue_peek_data(struct mbox_chan *chan) static bool ti_msgmgr_last_tx_done(struct mbox_chan *chan) { struct ti_queue_inst *qinst = chan->con_priv; + struct device *dev = chan->mbox->dev; + struct ti_msgmgr_inst *inst = dev_get_drvdata(dev); int msg_count; if (!qinst->is_tx) return false; - msg_count = ti_msgmgr_queue_get_num_messages(qinst); + msg_count = ti_msgmgr_queue_get_num_messages(inst->desc, qinst); /* if we have any messages pending.. */ return msg_count ? false : true; @@ -523,6 +533,7 @@ static const struct ti_msgmgr_desc k2g_desc = { .max_messages = 128, .data_first_reg = 16, .data_last_reg = 31, + .status_cnt_mask = Q_STATE_ENTRY_COUNT_MASK, .tx_polled = false, .valid_queues = k2g_valid_queues, .num_valid_queues = ARRAY_SIZE(k2g_valid_queues), -- 2.15.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nishanth Menon Subject: [PATCH V2 3/6] mailbox: ti-msgmgr: Change message count mask to be descriptor based Date: Mon, 16 Jul 2018 13:06:04 -0500 Message-ID: <20180716180607.16526-4-nm@ti.com> References: <20180716180607.16526-1-nm@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <20180716180607.16526-1-nm@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: Jassi Brar , Mark Rutland , Rob Herring Cc: Nishanth Menon , Suman Anna , Tero Kristo , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org List-Id: devicetree@vger.kernel.org Change mask used to extract the message count to be descriptor based. This is to support changes for count location for various SoC solutions. Signed-off-by: Nishanth Menon --- Changes since V1: None V1: https://patchwork.kernel.org/patch/10475341/ RFC: https://patchwork.kernel.org/patch/10447671/ drivers/mailbox/ti-msgmgr.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-) diff --git a/drivers/mailbox/ti-msgmgr.c b/drivers/mailbox/ti-msgmgr.c index 91c955979008..7d2eb4b359ba 100644 --- a/drivers/mailbox/ti-msgmgr.c +++ b/drivers/mailbox/ti-msgmgr.c @@ -44,6 +44,7 @@ struct ti_msgmgr_valid_queue_desc { * @max_messages: Number of messages * @data_first_reg: First data register for proxy data region * @data_last_reg: Last data register for proxy data region + * @status_cnt_mask: Mask for getting the status value * @tx_polled: Do I need to use polled mechanism for tx * @tx_poll_timeout_ms: Timeout in ms if polled * @valid_queues: List of Valid queues that the processor can access @@ -58,6 +59,7 @@ struct ti_msgmgr_desc { u8 max_messages; u8 data_first_reg; u8 data_last_reg; + u32 status_cnt_mask; bool tx_polled; int tx_poll_timeout_ms; const struct ti_msgmgr_valid_queue_desc *valid_queues; @@ -116,20 +118,24 @@ struct ti_msgmgr_inst { /** * ti_msgmgr_queue_get_num_messages() - Get the number of pending messages + * @d: Description of message manager * @qinst: Queue instance for which we check the number of pending messages * * Return: number of messages pending in the queue (0 == no pending messages) */ -static inline int ti_msgmgr_queue_get_num_messages(struct ti_queue_inst *qinst) +static inline int +ti_msgmgr_queue_get_num_messages(const struct ti_msgmgr_desc *d, + struct ti_queue_inst *qinst) { u32 val; + u32 status_cnt_mask = d->status_cnt_mask; /* * We cannot use relaxed operation here - update may happen * real-time. */ - val = readl(qinst->queue_state) & Q_STATE_ENTRY_COUNT_MASK; - val >>= __ffs(Q_STATE_ENTRY_COUNT_MASK); + val = readl(qinst->queue_state) & status_cnt_mask; + val >>= __ffs(status_cnt_mask); return val; } @@ -167,8 +173,9 @@ static irqreturn_t ti_msgmgr_queue_rx_interrupt(int irq, void *p) return IRQ_NONE; } + desc = inst->desc; /* Do I actually have messages to read? */ - msg_count = ti_msgmgr_queue_get_num_messages(qinst); + msg_count = ti_msgmgr_queue_get_num_messages(desc, qinst); if (!msg_count) { /* Shared IRQ? */ dev_dbg(dev, "Spurious event - 0 pending data!\n"); @@ -181,7 +188,6 @@ static irqreturn_t ti_msgmgr_queue_rx_interrupt(int irq, void *p) * of how many bytes I should be reading. Let the client figure this * out.. I just read the full message and pass it on.. */ - desc = inst->desc; message.len = desc->max_message_size; message.buf = (u8 *)qinst->rx_buff; @@ -224,12 +230,14 @@ static irqreturn_t ti_msgmgr_queue_rx_interrupt(int irq, void *p) static bool ti_msgmgr_queue_peek_data(struct mbox_chan *chan) { struct ti_queue_inst *qinst = chan->con_priv; + struct device *dev = chan->mbox->dev; + struct ti_msgmgr_inst *inst = dev_get_drvdata(dev); int msg_count; if (qinst->is_tx) return false; - msg_count = ti_msgmgr_queue_get_num_messages(qinst); + msg_count = ti_msgmgr_queue_get_num_messages(inst->desc, qinst); return msg_count ? true : false; } @@ -243,12 +251,14 @@ static bool ti_msgmgr_queue_peek_data(struct mbox_chan *chan) static bool ti_msgmgr_last_tx_done(struct mbox_chan *chan) { struct ti_queue_inst *qinst = chan->con_priv; + struct device *dev = chan->mbox->dev; + struct ti_msgmgr_inst *inst = dev_get_drvdata(dev); int msg_count; if (!qinst->is_tx) return false; - msg_count = ti_msgmgr_queue_get_num_messages(qinst); + msg_count = ti_msgmgr_queue_get_num_messages(inst->desc, qinst); /* if we have any messages pending.. */ return msg_count ? false : true; @@ -523,6 +533,7 @@ static const struct ti_msgmgr_desc k2g_desc = { .max_messages = 128, .data_first_reg = 16, .data_last_reg = 31, + .status_cnt_mask = Q_STATE_ENTRY_COUNT_MASK, .tx_polled = false, .valid_queues = k2g_valid_queues, .num_valid_queues = ARRAY_SIZE(k2g_valid_queues), -- 2.15.1 From mboxrd@z Thu Jan 1 00:00:00 1970 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=-2.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 1E024ECDFAA for ; Mon, 16 Jul 2018 18:06:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C77F3208E9 for ; Mon, 16 Jul 2018 18:06:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="NuZVVagC" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C77F3208E9 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=ti.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731094AbeGPSfB (ORCPT ); Mon, 16 Jul 2018 14:35:01 -0400 Received: from lelv0143.ext.ti.com ([198.47.23.248]:39492 "EHLO lelv0143.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727479AbeGPSe7 (ORCPT ); Mon, 16 Jul 2018 14:34:59 -0400 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id w6GI69NQ017781; Mon, 16 Jul 2018 13:06:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1531764369; bh=5wWrK6VF2ukYyYB9XrW7r/aWvvVmEhmt8uCoRSgLppM=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=NuZVVagCF61zMPnxmSaGBAZV/hSMTdQLUbce9W6SgNlZkIkuHOAcsbRPeW2iW5jfv z6o3/DFaMsb1096ODhzmj9q4R/VqWQR1d5008OOxtCqy4xYDIS8/nz78NCBWWnmjMt eVi70xPKAjLhY7IKtSbamaPUe8hdYdxeA3n1rHOk= Received: from DLEE109.ent.ti.com (dlee109.ent.ti.com [157.170.170.41]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id w6GI69mp024992; Mon, 16 Jul 2018 13:06:09 -0500 Received: from DLEE107.ent.ti.com (157.170.170.37) by DLEE109.ent.ti.com (157.170.170.41) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1466.3; Mon, 16 Jul 2018 13:06:08 -0500 Received: from dlep33.itg.ti.com (157.170.170.75) by DLEE107.ent.ti.com (157.170.170.37) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1466.3 via Frontend Transport; Mon, 16 Jul 2018 13:06:08 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep33.itg.ti.com (8.14.3/8.13.8) with ESMTP id w6GI68am001270; Mon, 16 Jul 2018 13:06:08 -0500 From: Nishanth Menon To: Jassi Brar , Mark Rutland , Rob Herring CC: Nishanth Menon , Suman Anna , Tero Kristo , , , Subject: [PATCH V2 3/6] mailbox: ti-msgmgr: Change message count mask to be descriptor based Date: Mon, 16 Jul 2018 13:06:04 -0500 Message-ID: <20180716180607.16526-4-nm@ti.com> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20180716180607.16526-1-nm@ti.com> References: <20180716180607.16526-1-nm@ti.com> MIME-Version: 1.0 Content-Type: text/plain X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Change mask used to extract the message count to be descriptor based. This is to support changes for count location for various SoC solutions. Signed-off-by: Nishanth Menon --- Changes since V1: None V1: https://patchwork.kernel.org/patch/10475341/ RFC: https://patchwork.kernel.org/patch/10447671/ drivers/mailbox/ti-msgmgr.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-) diff --git a/drivers/mailbox/ti-msgmgr.c b/drivers/mailbox/ti-msgmgr.c index 91c955979008..7d2eb4b359ba 100644 --- a/drivers/mailbox/ti-msgmgr.c +++ b/drivers/mailbox/ti-msgmgr.c @@ -44,6 +44,7 @@ struct ti_msgmgr_valid_queue_desc { * @max_messages: Number of messages * @data_first_reg: First data register for proxy data region * @data_last_reg: Last data register for proxy data region + * @status_cnt_mask: Mask for getting the status value * @tx_polled: Do I need to use polled mechanism for tx * @tx_poll_timeout_ms: Timeout in ms if polled * @valid_queues: List of Valid queues that the processor can access @@ -58,6 +59,7 @@ struct ti_msgmgr_desc { u8 max_messages; u8 data_first_reg; u8 data_last_reg; + u32 status_cnt_mask; bool tx_polled; int tx_poll_timeout_ms; const struct ti_msgmgr_valid_queue_desc *valid_queues; @@ -116,20 +118,24 @@ struct ti_msgmgr_inst { /** * ti_msgmgr_queue_get_num_messages() - Get the number of pending messages + * @d: Description of message manager * @qinst: Queue instance for which we check the number of pending messages * * Return: number of messages pending in the queue (0 == no pending messages) */ -static inline int ti_msgmgr_queue_get_num_messages(struct ti_queue_inst *qinst) +static inline int +ti_msgmgr_queue_get_num_messages(const struct ti_msgmgr_desc *d, + struct ti_queue_inst *qinst) { u32 val; + u32 status_cnt_mask = d->status_cnt_mask; /* * We cannot use relaxed operation here - update may happen * real-time. */ - val = readl(qinst->queue_state) & Q_STATE_ENTRY_COUNT_MASK; - val >>= __ffs(Q_STATE_ENTRY_COUNT_MASK); + val = readl(qinst->queue_state) & status_cnt_mask; + val >>= __ffs(status_cnt_mask); return val; } @@ -167,8 +173,9 @@ static irqreturn_t ti_msgmgr_queue_rx_interrupt(int irq, void *p) return IRQ_NONE; } + desc = inst->desc; /* Do I actually have messages to read? */ - msg_count = ti_msgmgr_queue_get_num_messages(qinst); + msg_count = ti_msgmgr_queue_get_num_messages(desc, qinst); if (!msg_count) { /* Shared IRQ? */ dev_dbg(dev, "Spurious event - 0 pending data!\n"); @@ -181,7 +188,6 @@ static irqreturn_t ti_msgmgr_queue_rx_interrupt(int irq, void *p) * of how many bytes I should be reading. Let the client figure this * out.. I just read the full message and pass it on.. */ - desc = inst->desc; message.len = desc->max_message_size; message.buf = (u8 *)qinst->rx_buff; @@ -224,12 +230,14 @@ static irqreturn_t ti_msgmgr_queue_rx_interrupt(int irq, void *p) static bool ti_msgmgr_queue_peek_data(struct mbox_chan *chan) { struct ti_queue_inst *qinst = chan->con_priv; + struct device *dev = chan->mbox->dev; + struct ti_msgmgr_inst *inst = dev_get_drvdata(dev); int msg_count; if (qinst->is_tx) return false; - msg_count = ti_msgmgr_queue_get_num_messages(qinst); + msg_count = ti_msgmgr_queue_get_num_messages(inst->desc, qinst); return msg_count ? true : false; } @@ -243,12 +251,14 @@ static bool ti_msgmgr_queue_peek_data(struct mbox_chan *chan) static bool ti_msgmgr_last_tx_done(struct mbox_chan *chan) { struct ti_queue_inst *qinst = chan->con_priv; + struct device *dev = chan->mbox->dev; + struct ti_msgmgr_inst *inst = dev_get_drvdata(dev); int msg_count; if (!qinst->is_tx) return false; - msg_count = ti_msgmgr_queue_get_num_messages(qinst); + msg_count = ti_msgmgr_queue_get_num_messages(inst->desc, qinst); /* if we have any messages pending.. */ return msg_count ? false : true; @@ -523,6 +533,7 @@ static const struct ti_msgmgr_desc k2g_desc = { .max_messages = 128, .data_first_reg = 16, .data_last_reg = 31, + .status_cnt_mask = Q_STATE_ENTRY_COUNT_MASK, .tx_polled = false, .valid_queues = k2g_valid_queues, .num_valid_queues = ARRAY_SIZE(k2g_valid_queues), -- 2.15.1