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X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [40.107.22.68 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.0 MSGID_FROM_MTA_HEADER Message-Id was added by a relay 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: aisheng.dong@nxp.com, devicetree@vger.kernel.org, Peng Fan , hongxing.zhu@nxp.com, m.felsch@pengutronix.de, linux-kernel@vger.kernel.org, linux-imx@nxp.com, kernel@pengutronix.de, festevam@gmail.com, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Peng Fan Add fsl,scu property, this needs to be enabled for SCU channel type. Signed-off-by: Peng Fan --- Documentation/devicetree/bindings/mailbox/fsl,mu.txt | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/mailbox/fsl,mu.txt b/Documentation/devicetree/bindings/mailbox/fsl,mu.txt index 9c43357c5924..5b502bcf7122 100644 --- a/Documentation/devicetree/bindings/mailbox/fsl,mu.txt +++ b/Documentation/devicetree/bindings/mailbox/fsl,mu.txt @@ -45,6 +45,7 @@ Optional properties: ------------------- - clocks : phandle to the input clock. - fsl,mu-side-b : Should be set for side B MU. +- fsl,scu: Support i.MX8/8X SCU channel type Examples: -------- From patchwork Mon Feb 24 12:14:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Peng Fan X-Patchwork-Id: 11400357 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C06021395 for ; Mon, 24 Feb 2020 12:21:32 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 9B7A620836 for ; 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For example, when a four-word message is desired, only one of the registers needs to have its corresponding interrupt enable bit set at the receiver side; the message’s first three words are written to the registers whose interrupt is masked, and the fourth word is written to the other register (which triggers an interrupt at the receiver side). i.MX8/8X SCU firmware IPC is an implementation of passing short messages. But current imx-mailbox driver only support one word message, i.MX8/8X linux side firmware has to request four TX and four RX to support IPC to SCU firmware. This is low efficent and more interrupts triggered compared with one TX and one RX. To make SCU channel type work, - parse the size of msg. - Only enable TR0/RR0 interrupt for transmit/receive message. Signed-off-by: Peng Fan --- drivers/mailbox/imx-mailbox.c | 42 ++++++++++++++++++++++++++++++++++++++---- 1 file changed, 38 insertions(+), 4 deletions(-) diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c index 2cdcdc5f1119..7d9aafff5f6d 100644 --- a/drivers/mailbox/imx-mailbox.c +++ b/drivers/mailbox/imx-mailbox.c @@ -4,6 +4,7 @@ */ #include +#include #include #include #include @@ -65,8 +66,14 @@ struct imx_mu_priv { int irq; bool side_b; + bool scu; }; +struct imx_sc_rpc_msg_max { + struct imx_sc_rpc_msg hdr; + u32 data[7]; +} __packed __aligned(4);; + static const struct imx_mu_dcfg imx_mu_cfg_imx6sx = { .xTR = {0x0, 0x4, 0x8, 0xc}, .xRR = {0x10, 0x14, 0x18, 0x1c}, @@ -123,7 +130,10 @@ static irqreturn_t imx_mu_isr(int irq, void *p) struct mbox_chan *chan = p; struct imx_mu_priv *priv = to_imx_mu_priv(chan->mbox); struct imx_mu_con_priv *cp = chan->con_priv; + struct imx_sc_rpc_msg_max msg; + u32 *p_msg = (u32 *)&msg; u32 val, ctrl, dat; + int i; ctrl = imx_mu_read(priv, priv->dcfg->xCR); val = imx_mu_read(priv, priv->dcfg->xSR); @@ -152,8 +162,19 @@ static irqreturn_t imx_mu_isr(int irq, void *p) imx_mu_xcr_rmw(priv, 0, IMX_MU_xCR_TIEn(cp->idx)); mbox_chan_txdone(chan, 0); } else if (val == IMX_MU_xSR_RFn(cp->idx)) { - dat = imx_mu_read(priv, priv->dcfg->xRR[cp->idx]); - mbox_chan_received_data(chan, (void *)&dat); + if (!priv->scu) { + dat = imx_mu_read(priv, priv->dcfg->xRR[cp->idx]); + mbox_chan_received_data(chan, (void *)&dat); + } else { + imx_mu_xcr_rmw(priv, 0, IMX_MU_xCR_RIEn(0)); + *p_msg++ = imx_mu_read(priv, priv->dcfg->xRR[0]); + for (i = 1; i < msg.hdr.size; i++) { + *p_msg++ = imx_mu_read(priv, + priv->dcfg->xRR[i % 4]); + } + imx_mu_xcr_rmw(priv, IMX_MU_xCR_RIEn(0), 0); + mbox_chan_received_data(chan, (void *)&msg); + } } else if (val == IMX_MU_xSR_GIPn(cp->idx)) { imx_mu_write(priv, IMX_MU_xSR_GIPn(cp->idx), priv->dcfg->xSR); mbox_chan_received_data(chan, NULL); @@ -169,11 +190,20 @@ static int imx_mu_send_data(struct mbox_chan *chan, void *data) { struct imx_mu_priv *priv = to_imx_mu_priv(chan->mbox); struct imx_mu_con_priv *cp = chan->con_priv; + struct imx_sc_rpc_msg_max *msg = data; u32 *arg = data; + int i; switch (cp->type) { case IMX_MU_TYPE_TX: - imx_mu_write(priv, *arg, priv->dcfg->xTR[cp->idx]); + if (priv->scu) { + for (i = 0; i < msg->hdr.size; i++) { + imx_mu_write(priv, *arg++, + priv->dcfg->xTR[i % 4]); + } + } else { + imx_mu_write(priv, *arg, priv->dcfg->xTR[cp->idx]); + } imx_mu_xcr_rmw(priv, IMX_MU_xCR_TIEn(cp->idx), 0); break; case IMX_MU_TYPE_TXDB: @@ -259,6 +289,7 @@ static const struct mbox_chan_ops imx_mu_ops = { static struct mbox_chan * imx_mu_xlate(struct mbox_controller *mbox, const struct of_phandle_args *sp) { + struct imx_mu_priv *priv = to_imx_mu_priv(mbox); u32 type, idx, chan; if (sp->args_count != 2) { @@ -270,7 +301,9 @@ static struct mbox_chan * imx_mu_xlate(struct mbox_controller *mbox, idx = sp->args[1]; /* index */ chan = type * 4 + idx; - if (chan >= mbox->num_chans) { + /* For TX/RX SCU, only one channel supported */ + if ((chan >= mbox->num_chans) || + (priv->scu && type < 1 && idx >= 1)) { dev_err(mbox->dev, "Not supported channel number: %d. (type: %d, idx: %d)\n", chan, type, idx); return ERR_PTR(-EINVAL); } @@ -341,6 +374,7 @@ static int imx_mu_probe(struct platform_device *pdev) } priv->side_b = of_property_read_bool(np, "fsl,mu-side-b"); + priv->scu = of_property_read_bool(np, "fsl,scu"); spin_lock_init(&priv->xcr_lock); From patchwork Mon Feb 24 12:14:34 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Fan X-Patchwork-Id: 11400359 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 778351395 for ; Mon, 24 Feb 2020 12:21:52 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 33E092072D for ; Mon, 24 Feb 2020 12:21:52 +0000 (UTC) Authentication-Results: mail.kernel.org; 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X-Microsoft-Antispam-Message-Info: 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 X-MS-Exchange-AntiSpam-MessageData: zq4AtmVC87q3PVrMj6tzaSvYFw1Zq4Z18jYcH49ml0EfcifUpiulrHY5RiGYqmgSx+CqOsXs66qZdAF76WDgXr0TWk6OO6LU6ZCP9xcpdyZxeFjkk1S+6JOE4gqR5ffNfTgUIFNuC9oy53tUhZDchw== X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2aed960e-9267-41ec-9798-08d7b92406a5 X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Feb 2020 12:21:07.9600 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: wR+dlEfmnEwvGvp7iCT8awYFzyJxqgAwKUc5eJ3siae9erfm71/lelcn5GG/5ey56ybicyqJgYH9AfEEvY2o/Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB4433 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200224_042111_050667_530A1ED6 X-CRM114-Status: GOOD ( 14.32 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [40.107.13.79 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.0 MSGID_FROM_MTA_HEADER Message-Id was added by a relay 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: aisheng.dong@nxp.com, devicetree@vger.kernel.org, Peng Fan , hongxing.zhu@nxp.com, m.felsch@pengutronix.de, linux-kernel@vger.kernel.org, linux-imx@nxp.com, kernel@pengutronix.de, festevam@gmail.com, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Peng Fan Current imx-scu requires four TX and four RX to communicate with SCU. This is low efficient and causes lots of mailbox interrupts. With imx-mailbox driver could support one TX to use all four transmit registers and one RX to use all four receive registers, imx-scu could use one TX and one RX. Signed-off-by: Peng Fan --- drivers/firmware/imx/imx-scu.c | 54 +++++++++++++++++++++++++++++++++--------- 1 file changed, 43 insertions(+), 11 deletions(-) diff --git a/drivers/firmware/imx/imx-scu.c b/drivers/firmware/imx/imx-scu.c index f71eaa5bf52d..953446b3d5e5 100644 --- a/drivers/firmware/imx/imx-scu.c +++ b/drivers/firmware/imx/imx-scu.c @@ -38,6 +38,7 @@ struct imx_sc_ipc { struct device *dev; struct mutex lock; struct completion done; + bool fast_ipc; /* temporarily store the SCU msg */ u32 *msg; @@ -115,6 +116,7 @@ static void imx_scu_rx_callback(struct mbox_client *c, void *msg) struct imx_sc_ipc *sc_ipc = sc_chan->sc_ipc; struct imx_sc_rpc_msg *hdr; u32 *data = msg; + int i; if (!sc_ipc->msg) { dev_warn(sc_ipc->dev, "unexpected rx idx %d 0x%08x, ignore!\n", @@ -122,6 +124,19 @@ static void imx_scu_rx_callback(struct mbox_client *c, void *msg) return; } + if (sc_ipc->fast_ipc) { + hdr = msg; + sc_ipc->rx_size = hdr->size; + sc_ipc->msg[0] = *data++; + + for (i = 1; i < sc_ipc->rx_size; i++) + sc_ipc->msg[i] = *data++; + + complete(&sc_ipc->done); + + return; + } + if (sc_chan->idx == 0) { hdr = msg; sc_ipc->rx_size = hdr->size; @@ -147,6 +162,7 @@ static int imx_scu_ipc_write(struct imx_sc_ipc *sc_ipc, void *msg) struct imx_sc_chan *sc_chan; u32 *data = msg; int ret; + int size; int i; /* Check size */ @@ -156,7 +172,8 @@ static int imx_scu_ipc_write(struct imx_sc_ipc *sc_ipc, void *msg) dev_dbg(sc_ipc->dev, "RPC SVC %u FUNC %u SIZE %u\n", hdr->svc, hdr->func, hdr->size); - for (i = 0; i < hdr->size; i++) { + size = sc_ipc->fast_ipc ? 1 : hdr->size; + for (i = 0; i < size; i++) { sc_chan = &sc_ipc->chans[i % 4]; /* @@ -168,8 +185,10 @@ static int imx_scu_ipc_write(struct imx_sc_ipc *sc_ipc, void *msg) * Wait for tx_done before every send to ensure that no * queueing happens at the mailbox channel level. */ - wait_for_completion(&sc_chan->tx_done); - reinit_completion(&sc_chan->tx_done); + if (!sc_ipc->fast_ipc) { + wait_for_completion(&sc_chan->tx_done); + reinit_completion(&sc_chan->tx_done); + } ret = mbox_send_message(sc_chan->ch, &data[i]); if (ret < 0) @@ -246,6 +265,8 @@ static int imx_scu_probe(struct platform_device *pdev) struct imx_sc_chan *sc_chan; struct mbox_client *cl; char *chan_name; + struct of_phandle_args args; + int num_channel; int ret; int i; @@ -253,11 +274,20 @@ static int imx_scu_probe(struct platform_device *pdev) if (!sc_ipc) return -ENOMEM; - for (i = 0; i < SCU_MU_CHAN_NUM; i++) { - if (i < 4) + ret = of_parse_phandle_with_args(pdev->dev.of_node, "mboxes", + "#mbox-cells", 0, &args); + if (ret) + return ret; + + sc_ipc->fast_ipc = of_property_read_bool(args.np, "fsl,scu"); + + num_channel = sc_ipc->fast_ipc ? 2 : SCU_MU_CHAN_NUM; + for (i = 0; i < num_channel; i++) { + if (i < num_channel / 2) chan_name = kasprintf(GFP_KERNEL, "tx%d", i); else - chan_name = kasprintf(GFP_KERNEL, "rx%d", i - 4); + chan_name = kasprintf(GFP_KERNEL, "rx%d", + i - num_channel / 2); if (!chan_name) return -ENOMEM; @@ -269,13 +299,15 @@ static int imx_scu_probe(struct platform_device *pdev) cl->knows_txdone = true; cl->rx_callback = imx_scu_rx_callback; - /* Initial tx_done completion as "done" */ - cl->tx_done = imx_scu_tx_done; - init_completion(&sc_chan->tx_done); - complete(&sc_chan->tx_done); + if (!sc_ipc->fast_ipc) { + /* Initial tx_done completion as "done" */ + cl->tx_done = imx_scu_tx_done; + init_completion(&sc_chan->tx_done); + complete(&sc_chan->tx_done); + } sc_chan->sc_ipc = sc_ipc; - sc_chan->idx = i % 4; + sc_chan->idx = i % (num_channel / 2); sc_chan->ch = mbox_request_channel_byname(cl, chan_name); if (IS_ERR(sc_chan->ch)) { ret = PTR_ERR(sc_chan->ch);