From patchwork Thu May 12 11:47:18 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Phil Edworthy X-Patchwork-Id: 12847609 X-Patchwork-Delegate: geert@linux-m68k.org 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AB441C433EF for ; Thu, 12 May 2022 11:47:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1353406AbiELLrw (ORCPT ); Thu, 12 May 2022 07:47:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53030 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1353404AbiELLrv (ORCPT ); Thu, 12 May 2022 07:47:51 -0400 Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 2C24B4E3B1; Thu, 12 May 2022 04:47:48 -0700 (PDT) X-IronPort-AV: E=Sophos;i="5.91,219,1647270000"; d="scan'208";a="120774508" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie6.idc.renesas.com with ESMTP; 12 May 2022 20:47:47 +0900 Received: from localhost.localdomain (unknown [10.226.93.50]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id A6DF740062AC; Thu, 12 May 2022 20:47:43 +0900 (JST) From: Phil Edworthy To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski Cc: Phil Edworthy , Geert Uytterhoeven , Sergey Shtylyov , Sergei Shtylyov , netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org, Biju Das Subject: [PATCH v4 1/5] dt-bindings: net: renesas,etheravb: Document RZ/V2M SoC Date: Thu, 12 May 2022 12:47:18 +0100 Message-Id: <20220512114722.35965-2-phil.edworthy@renesas.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220512114722.35965-1-phil.edworthy@renesas.com> References: <20220512114722.35965-1-phil.edworthy@renesas.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org Document the Ethernet AVB IP found on RZ/V2M SoC. It includes the Ethernet controller (E-MAC) and Dedicated Direct memory access controller (DMAC) for transferring transmitted Ethernet frames to and received Ethernet frames from respective storage areas in the RAM at high speed. The AVB-DMAC is compliant with IEEE 802.1BA, IEEE 802.1AS timing and synchronization protocol, IEEE 802.1Qav real-time transfer, and the IEEE 802.1Qat stream reservation protocol. R-Car has a pair of combined interrupt lines: ch22 = Line0_DiA | Line1_A | Line2_A ch23 = Line0_DiB | Line1_B | Line2_B Line0 for descriptor interrupts (which we call dia and dib). Line1 for error related interrupts (which we call err_a and err_b). Line2 for management and gPTP related interrupts (mgmt_a and mgmt_b). RZ/V2M hardware has separate interrupt lines for each of these. It has 3 clocks; the main AXI clock, the AMBA CHI (Coherent Hub Interface) clock and a gPTP reference clock. Signed-off-by: Phil Edworthy Reviewed-by: Biju Das Reviewed-by: Sergey Shtylyov --- v4: - Added Reviewed-by tags v3: - No change v2: - Instead of reusing ch22 and ch24 interupt names, use the proper names --- .../bindings/net/renesas,etheravb.yaml | 82 ++++++++++++++----- 1 file changed, 61 insertions(+), 21 deletions(-) diff --git a/Documentation/devicetree/bindings/net/renesas,etheravb.yaml b/Documentation/devicetree/bindings/net/renesas,etheravb.yaml index ee2ccacc39ff..acf347f3cdbe 100644 --- a/Documentation/devicetree/bindings/net/renesas,etheravb.yaml +++ b/Documentation/devicetree/bindings/net/renesas,etheravb.yaml @@ -43,6 +43,11 @@ properties: - renesas,etheravb-r8a779a0 # R-Car V3U - const: renesas,etheravb-rcar-gen3 # R-Car Gen3 and RZ/G2 + - items: + - enum: + - renesas,etheravb-r9a09g011 # RZ/V2M + - const: renesas,etheravb-rzv2m # RZ/V2M compatible + - items: - enum: - renesas,r9a07g043-gbeth # RZ/G2UL @@ -160,16 +165,33 @@ allOf: - const: arp_ns rx-internal-delay-ps: false else: - properties: - interrupts: - minItems: 25 - maxItems: 25 - interrupt-names: - items: - pattern: '^ch[0-9]+$' - required: - - interrupt-names - - rx-internal-delay-ps + if: + properties: + compatible: + contains: + const: renesas,etheravb-rzv2m + then: + properties: + interrupts: + minItems: 29 + maxItems: 29 + interrupt-names: + items: + pattern: '^(ch(1?)[0-9])|ch20|ch21|dia|dib|err_a|err_b|mgmt_a|mgmt_b|line3$' + rx-internal-delay-ps: false + required: + - interrupt-names + else: + properties: + interrupts: + minItems: 25 + maxItems: 25 + interrupt-names: + items: + pattern: '^ch[0-9]+$' + required: + - interrupt-names + - rx-internal-delay-ps - if: properties: @@ -231,17 +253,35 @@ allOf: - const: chi - const: refclk else: - properties: - clocks: - minItems: 1 - items: - - description: AVB functional clock - - description: Optional TXC reference clock - clock-names: - minItems: 1 - items: - - const: fck - - const: refclk + if: + properties: + compatible: + contains: + const: renesas,etheravb-rzv2m + then: + properties: + clocks: + items: + - description: Main clock + - description: Coherent Hub Interface clock + - description: gPTP reference clock + clock-names: + items: + - const: axi + - const: chi + - const: gptp + else: + properties: + clocks: + minItems: 1 + items: + - description: AVB functional clock + - description: Optional TXC reference clock + clock-names: + minItems: 1 + items: + - const: fck + - const: refclk additionalProperties: false From patchwork Thu May 12 11:47:19 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Phil Edworthy X-Patchwork-Id: 12847610 X-Patchwork-Delegate: geert@linux-m68k.org 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AB57FC433EF for ; Thu, 12 May 2022 11:48:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1353416AbiELLsH (ORCPT ); Thu, 12 May 2022 07:48:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53574 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1353425AbiELLsF (ORCPT ); Thu, 12 May 2022 07:48:05 -0400 Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 8FBBC517D9; Thu, 12 May 2022 04:47:59 -0700 (PDT) X-IronPort-AV: E=Sophos;i="5.91,219,1647270000"; d="scan'208";a="120774520" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie6.idc.renesas.com with ESMTP; 12 May 2022 20:47:58 +0900 Received: from localhost.localdomain (unknown [10.226.93.50]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 21D7A4007552; Thu, 12 May 2022 20:47:54 +0900 (JST) From: Phil Edworthy To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Phil Edworthy , Geert Uytterhoeven , Sergey Shtylyov , Biju Das , Lad Prabhakar , netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org Subject: [PATCH v4 2/5] ravb: Separate handling of irq enable/disable regs into feature Date: Thu, 12 May 2022 12:47:19 +0100 Message-Id: <20220512114722.35965-3-phil.edworthy@renesas.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220512114722.35965-1-phil.edworthy@renesas.com> References: <20220512114722.35965-1-phil.edworthy@renesas.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org Currently, when the HW has a single interrupt, the driver uses the GIC, TIC, RIC0 registers to enable and disable interrupts. When the HW has multiple interrupts, it uses the GIE, GID, TIE, TID, RIE0, RID0 registers. However, other devices, e.g. RZ/V2M, have multiple irqs and only have the GIC, TIC, RIC0 registers. Therefore, split this into a separate feature. Signed-off-by: Phil Edworthy Reviewed-by: Biju Das Reviewed-by: Sergey Shtylyov --- v4: - Added Reviewed-by tags v3: - Actually renamed irq_en_dis_regs to irq_en_dis this time - Make ravb_ptp_extts() use irq_en_dis instead of multi_irqs v2: - Renamed irq_en_dis_regs to irq_en_dis - Squashed use of GIC reg versus GIE/GID into this patch and got rid of separate gptp_ptm_gic feature. - Minor editing of the commit msg --- drivers/net/ethernet/renesas/ravb.h | 1 + drivers/net/ethernet/renesas/ravb_main.c | 5 +++-- drivers/net/ethernet/renesas/ravb_ptp.c | 6 +++--- 3 files changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h index 08062d73df10..bb82efd222c7 100644 --- a/drivers/net/ethernet/renesas/ravb.h +++ b/drivers/net/ethernet/renesas/ravb.h @@ -1027,6 +1027,7 @@ struct ravb_hw_info { unsigned tx_counters:1; /* E-MAC has TX counters */ unsigned carrier_counters:1; /* E-MAC has carrier counters */ unsigned multi_irqs:1; /* AVB-DMAC and E-MAC has multiple irqs */ + unsigned irq_en_dis:1; /* Has separate irq enable and disable regs */ unsigned gptp:1; /* AVB-DMAC has gPTP support */ unsigned ccc_gac:1; /* AVB-DMAC has gPTP support active in config mode */ unsigned nc_queues:1; /* AVB-DMAC has RX and TX NC queues */ diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index 525d66f71f02..e22c0e6ed0f3 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -1124,7 +1124,7 @@ static bool ravb_queue_interrupt(struct net_device *ndev, int q) if (((ris0 & ric0) & BIT(q)) || ((tis & tic) & BIT(q))) { if (napi_schedule_prep(&priv->napi[q])) { /* Mask RX and TX interrupts */ - if (!info->multi_irqs) { + if (!info->irq_en_dis) { ravb_write(ndev, ric0 & ~BIT(q), RIC0); ravb_write(ndev, tic & ~BIT(q), TIC); } else { @@ -1306,7 +1306,7 @@ static int ravb_poll(struct napi_struct *napi, int budget) /* Re-enable RX/TX interrupts */ spin_lock_irqsave(&priv->lock, flags); - if (!info->multi_irqs) { + if (!info->irq_en_dis) { ravb_modify(ndev, RIC0, mask, mask); ravb_modify(ndev, TIC, mask, mask); } else { @@ -2410,6 +2410,7 @@ static const struct ravb_hw_info ravb_gen3_hw_info = { .internal_delay = 1, .tx_counters = 1, .multi_irqs = 1, + .irq_en_dis = 1, .ccc_gac = 1, .nc_queues = 1, .magic_pkt = 1, diff --git a/drivers/net/ethernet/renesas/ravb_ptp.c b/drivers/net/ethernet/renesas/ravb_ptp.c index c099656dd75b..87c4306d66ec 100644 --- a/drivers/net/ethernet/renesas/ravb_ptp.c +++ b/drivers/net/ethernet/renesas/ravb_ptp.c @@ -198,7 +198,7 @@ static int ravb_ptp_extts(struct ptp_clock_info *ptp, priv->ptp.extts[req->index] = on; spin_lock_irqsave(&priv->lock, flags); - if (!info->multi_irqs) + if (!info->irq_en_dis) ravb_modify(ndev, GIC, GIC_PTCE, on ? GIC_PTCE : 0); else if (on) ravb_write(ndev, GIE_PTCS, GIE); @@ -254,7 +254,7 @@ static int ravb_ptp_perout(struct ptp_clock_info *ptp, error = ravb_ptp_update_compare(priv, (u32)start_ns); if (!error) { /* Unmask interrupt */ - if (!info->multi_irqs) + if (!info->irq_en_dis) ravb_modify(ndev, GIC, GIC_PTME, GIC_PTME); else ravb_write(ndev, GIE_PTMS0, GIE); @@ -266,7 +266,7 @@ static int ravb_ptp_perout(struct ptp_clock_info *ptp, perout->period = 0; /* Mask interrupt */ - if (!info->multi_irqs) + if (!info->irq_en_dis) ravb_modify(ndev, GIC, GIC_PTME, 0); else ravb_write(ndev, GID_PTMD0, GID); From patchwork Thu May 12 11:47:20 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Phil Edworthy X-Patchwork-Id: 12847611 X-Patchwork-Delegate: geert@linux-m68k.org 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 84108C433F5 for ; Thu, 12 May 2022 11:48:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1353427AbiELLsR (ORCPT ); Thu, 12 May 2022 07:48:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54434 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1353428AbiELLsK (ORCPT ); Thu, 12 May 2022 07:48:10 -0400 Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 44C294EDCB; Thu, 12 May 2022 04:48:09 -0700 (PDT) X-IronPort-AV: E=Sophos;i="5.91,219,1647270000"; d="scan'208";a="120774530" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie6.idc.renesas.com with ESMTP; 12 May 2022 20:48:08 +0900 Received: from localhost.localdomain (unknown [10.226.93.50]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 39A5B4007552; Thu, 12 May 2022 20:48:04 +0900 (JST) From: Phil Edworthy To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Phil Edworthy , Geert Uytterhoeven , Sergey Shtylyov , Biju Das , Lad Prabhakar , netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org Subject: [PATCH v4 3/5] ravb: Support separate Line0 (Desc), Line1 (Err) and Line2 (Mgmt) irqs Date: Thu, 12 May 2022 12:47:20 +0100 Message-Id: <20220512114722.35965-4-phil.edworthy@renesas.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220512114722.35965-1-phil.edworthy@renesas.com> References: <20220512114722.35965-1-phil.edworthy@renesas.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org R-Car has a combined interrupt line, ch22 = Line0_DiA | Line1_A | Line2_A. RZ/V2M has separate interrupt lines for each of these, so add a feature that allows the driver to get these interrupts and call the common handler. Signed-off-by: Phil Edworthy Reviewed-by: Biju Das Reviewed-by: Sergey Shtylyov --- v4: - No change v3: - Added Reviewed-by tags v2: - Move err_mgmt_irqs code under multi_irqs - Use dia, line3 irq names instead of ch22, ch24 when using err_mgmt_irqs --- drivers/net/ethernet/renesas/ravb.h | 3 ++ drivers/net/ethernet/renesas/ravb_main.c | 56 +++++++++++++++++++++--- 2 files changed, 53 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h index bb82efd222c7..e505e8088445 100644 --- a/drivers/net/ethernet/renesas/ravb.h +++ b/drivers/net/ethernet/renesas/ravb.h @@ -1028,6 +1028,7 @@ struct ravb_hw_info { unsigned carrier_counters:1; /* E-MAC has carrier counters */ unsigned multi_irqs:1; /* AVB-DMAC and E-MAC has multiple irqs */ unsigned irq_en_dis:1; /* Has separate irq enable and disable regs */ + unsigned err_mgmt_irqs:1; /* Line1 (Err) and Line2 (Mgmt) irqs are separate */ unsigned gptp:1; /* AVB-DMAC has gPTP support */ unsigned ccc_gac:1; /* AVB-DMAC has gPTP support active in config mode */ unsigned nc_queues:1; /* AVB-DMAC has RX and TX NC queues */ @@ -1078,6 +1079,8 @@ struct ravb_private { int msg_enable; int speed; int emac_irq; + int erra_irq; + int mgmta_irq; int rx_irqs[NUM_RX_QUEUE]; int tx_irqs[NUM_TX_QUEUE]; diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index e22c0e6ed0f3..8ccc817b8b5d 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -1798,12 +1798,23 @@ static int ravb_open(struct net_device *ndev) ndev, dev, "ch19:tx_nc"); if (error) goto out_free_irq_nc_rx; + + if (info->err_mgmt_irqs) { + error = ravb_hook_irq(priv->erra_irq, ravb_multi_interrupt, + ndev, dev, "err_a"); + if (error) + goto out_free_irq_nc_tx; + error = ravb_hook_irq(priv->mgmta_irq, ravb_multi_interrupt, + ndev, dev, "mgmt_a"); + if (error) + goto out_free_irq_erra; + } } /* Device init */ error = ravb_dmac_init(ndev); if (error) - goto out_free_irq_nc_tx; + goto out_free_irq_mgmta; ravb_emac_init(ndev); /* Initialise PTP Clock driver */ @@ -1823,9 +1834,15 @@ static int ravb_open(struct net_device *ndev) /* Stop PTP Clock driver */ if (info->gptp) ravb_ptp_stop(ndev); -out_free_irq_nc_tx: +out_free_irq_mgmta: if (!info->multi_irqs) goto out_free_irq; + if (info->err_mgmt_irqs) + free_irq(priv->mgmta_irq, ndev); +out_free_irq_erra: + if (info->err_mgmt_irqs) + free_irq(priv->erra_irq, ndev); +out_free_irq_nc_tx: free_irq(priv->tx_irqs[RAVB_NC], ndev); out_free_irq_nc_rx: free_irq(priv->rx_irqs[RAVB_NC], ndev); @@ -2166,6 +2183,10 @@ static int ravb_close(struct net_device *ndev) free_irq(priv->tx_irqs[RAVB_BE], ndev); free_irq(priv->rx_irqs[RAVB_BE], ndev); free_irq(priv->emac_irq, ndev); + if (info->err_mgmt_irqs) { + free_irq(priv->erra_irq, ndev); + free_irq(priv->mgmta_irq, ndev); + } } free_irq(ndev->irq, ndev); @@ -2595,10 +2616,14 @@ static int ravb_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); pm_runtime_get_sync(&pdev->dev); - if (info->multi_irqs) - irq = platform_get_irq_byname(pdev, "ch22"); - else + if (info->multi_irqs) { + if (info->err_mgmt_irqs) + irq = platform_get_irq_byname(pdev, "dia"); + else + irq = platform_get_irq_byname(pdev, "ch22"); + } else { irq = platform_get_irq(pdev, 0); + } if (irq < 0) { error = irq; goto out_release; @@ -2640,7 +2665,10 @@ static int ravb_probe(struct platform_device *pdev) of_property_read_bool(np, "renesas,ether-link-active-low"); if (info->multi_irqs) { - irq = platform_get_irq_byname(pdev, "ch24"); + if (info->err_mgmt_irqs) + irq = platform_get_irq_byname(pdev, "line3"); + else + irq = platform_get_irq_byname(pdev, "ch24"); if (irq < 0) { error = irq; goto out_release; @@ -2662,6 +2690,22 @@ static int ravb_probe(struct platform_device *pdev) } priv->tx_irqs[i] = irq; } + + if (info->err_mgmt_irqs) { + irq = platform_get_irq_byname(pdev, "err_a"); + if (irq < 0) { + error = irq; + goto out_release; + } + priv->erra_irq = irq; + + irq = platform_get_irq_byname(pdev, "mgmt_a"); + if (irq < 0) { + error = irq; + goto out_release; + } + priv->mgmta_irq = irq; + } } priv->clk = devm_clk_get(&pdev->dev, NULL); From patchwork Thu May 12 11:47:21 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Phil Edworthy X-Patchwork-Id: 12847612 X-Patchwork-Delegate: geert@linux-m68k.org 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CBB5EC433F5 for ; Thu, 12 May 2022 11:48:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1353440AbiELLse (ORCPT ); Thu, 12 May 2022 07:48:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56218 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1353442AbiELLsc (ORCPT ); Thu, 12 May 2022 07:48:32 -0400 Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 9CC09522EF; Thu, 12 May 2022 04:48:20 -0700 (PDT) X-IronPort-AV: E=Sophos;i="5.91,219,1647270000"; d="scan'208";a="120774545" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie6.idc.renesas.com with ESMTP; 12 May 2022 20:48:19 +0900 Received: from localhost.localdomain (unknown [10.226.93.50]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 7BBB24007552; Thu, 12 May 2022 20:48:16 +0900 (JST) From: Phil Edworthy To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Phil Edworthy , Geert Uytterhoeven , Sergey Shtylyov , Biju Das , Lad Prabhakar , netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org Subject: [PATCH v4 4/5] ravb: Use separate clock for gPTP Date: Thu, 12 May 2022 12:47:21 +0100 Message-Id: <20220512114722.35965-5-phil.edworthy@renesas.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220512114722.35965-1-phil.edworthy@renesas.com> References: <20220512114722.35965-1-phil.edworthy@renesas.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org RZ/V2M has a separate gPTP reference clock that is used when the AVB-DMAC Mode Register (CCC) gPTP Clock Select (CSEL) bits are set to "01: High-speed peripheral bus clock". Therefore, add a feature that allows this clock to be used for gPTP. Signed-off-by: Phil Edworthy Reviewed-by: Biju Das Reviewed-by: Sergey Shtylyov --- v4: - Add clk_disable_unprepare() for gptp ref clk v3: - No change v2: - Added Reviewed-by tags --- drivers/net/ethernet/renesas/ravb.h | 2 ++ drivers/net/ethernet/renesas/ravb_main.c | 22 +++++++++++++++++++--- 2 files changed, 21 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h index e505e8088445..b980bce763d3 100644 --- a/drivers/net/ethernet/renesas/ravb.h +++ b/drivers/net/ethernet/renesas/ravb.h @@ -1031,6 +1031,7 @@ struct ravb_hw_info { unsigned err_mgmt_irqs:1; /* Line1 (Err) and Line2 (Mgmt) irqs are separate */ unsigned gptp:1; /* AVB-DMAC has gPTP support */ unsigned ccc_gac:1; /* AVB-DMAC has gPTP support active in config mode */ + unsigned gptp_ref_clk:1; /* gPTP has separate reference clock */ unsigned nc_queues:1; /* AVB-DMAC has RX and TX NC queues */ unsigned magic_pkt:1; /* E-MAC supports magic packet detection */ unsigned half_duplex:1; /* E-MAC supports half duplex mode */ @@ -1042,6 +1043,7 @@ struct ravb_private { void __iomem *addr; struct clk *clk; struct clk *refclk; + struct clk *gptp_clk; struct mdiobb_ctrl mdiobb; u32 num_rx_ring[NUM_RX_QUEUE]; u32 num_tx_ring[NUM_TX_QUEUE]; diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index 8ccc817b8b5d..9d281f74abd0 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -2495,11 +2495,15 @@ MODULE_DEVICE_TABLE(of, ravb_match_table); static int ravb_set_gti(struct net_device *ndev) { struct ravb_private *priv = netdev_priv(ndev); + const struct ravb_hw_info *info = priv->info; struct device *dev = ndev->dev.parent; unsigned long rate; uint64_t inc; - rate = clk_get_rate(priv->clk); + if (info->gptp_ref_clk) + rate = clk_get_rate(priv->gptp_clk); + else + rate = clk_get_rate(priv->clk); if (!rate) return -EINVAL; @@ -2721,6 +2725,15 @@ static int ravb_probe(struct platform_device *pdev) } clk_prepare_enable(priv->refclk); + if (info->gptp_ref_clk) { + priv->gptp_clk = devm_clk_get(&pdev->dev, "gptp"); + if (IS_ERR(priv->gptp_clk)) { + error = PTR_ERR(priv->gptp_clk); + goto out_disable_refclk; + } + clk_prepare_enable(priv->gptp_clk); + } + ndev->max_mtu = info->rx_max_buf_size - (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN); ndev->min_mtu = ETH_MIN_MTU; @@ -2742,7 +2755,7 @@ static int ravb_probe(struct platform_device *pdev) /* Set GTI value */ error = ravb_set_gti(ndev); if (error) - goto out_disable_refclk; + goto out_disable_gptp_clk; /* Request GTI loading */ ravb_modify(ndev, GCCR, GCCR_LTI, GCCR_LTI); @@ -2762,7 +2775,7 @@ static int ravb_probe(struct platform_device *pdev) "Cannot allocate desc base address table (size %d bytes)\n", priv->desc_bat_size); error = -ENOMEM; - goto out_disable_refclk; + goto out_disable_gptp_clk; } for (q = RAVB_BE; q < DBAT_ENTRY_NUM; q++) priv->desc_bat[q].die_dt = DT_EOS; @@ -2825,6 +2838,8 @@ static int ravb_probe(struct platform_device *pdev) /* Stop PTP Clock driver */ if (info->ccc_gac) ravb_ptp_stop(ndev); +out_disable_gptp_clk: + clk_disable_unprepare(priv->gptp_clk); out_disable_refclk: clk_disable_unprepare(priv->refclk); out_release: @@ -2846,6 +2861,7 @@ static int ravb_remove(struct platform_device *pdev) if (info->ccc_gac) ravb_ptp_stop(ndev); + clk_disable_unprepare(priv->gptp_clk); clk_disable_unprepare(priv->refclk); dma_free_coherent(ndev->dev.parent, priv->desc_bat_size, priv->desc_bat, From patchwork Thu May 12 11:47:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Phil Edworthy X-Patchwork-Id: 12847613 X-Patchwork-Delegate: geert@linux-m68k.org 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BC446C433F5 for ; Thu, 12 May 2022 11:48:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1353487AbiELLsu (ORCPT ); Thu, 12 May 2022 07:48:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56528 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1353466AbiELLsf (ORCPT ); Thu, 12 May 2022 07:48:35 -0400 Received: from relmlie5.idc.renesas.com (relmlor1.renesas.com [210.160.252.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 798ED562C6; Thu, 12 May 2022 04:48:31 -0700 (PDT) X-IronPort-AV: E=Sophos;i="5.91,219,1647270000"; d="scan'208";a="119489205" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie5.idc.renesas.com with ESMTP; 12 May 2022 20:48:30 +0900 Received: from localhost.localdomain (unknown [10.226.93.50]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 8354D40083D6; Thu, 12 May 2022 20:48:27 +0900 (JST) From: Phil Edworthy To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Phil Edworthy , Geert Uytterhoeven , Sergey Shtylyov , Biju Das , Lad Prabhakar , netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org Subject: [PATCH v4 5/5] ravb: Add support for RZ/V2M Date: Thu, 12 May 2022 12:47:22 +0100 Message-Id: <20220512114722.35965-6-phil.edworthy@renesas.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220512114722.35965-1-phil.edworthy@renesas.com> References: <20220512114722.35965-1-phil.edworthy@renesas.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org RZ/V2M Ethernet is very similar to R-Car Gen3 Ethernet-AVB, though some small parts are the same as R-Car Gen2. Other differences to R-Car Gen3 and Gen2 are: * It has separate data (DI), error (Line 1) and management (Line 2) irqs rather than one irq for all three. * Instead of using the High-speed peripheral bus clock for gPTP, it has a separate gPTP reference clock. Signed-off-by: Phil Edworthy Reviewed-by: Biju Das Reviewed-by: Sergey Shtylyov --- v4: - No change v3: - Added Reviewed-by tags v2: - Removed gptp_ptm_gic feature that is no longer needed. --- drivers/net/ethernet/renesas/ravb_main.c | 26 ++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index 9d281f74abd0..b357ac4c56c5 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -2460,6 +2460,31 @@ static const struct ravb_hw_info ravb_gen2_hw_info = { .magic_pkt = 1, }; +static const struct ravb_hw_info ravb_rzv2m_hw_info = { + .rx_ring_free = ravb_rx_ring_free_rcar, + .rx_ring_format = ravb_rx_ring_format_rcar, + .alloc_rx_desc = ravb_alloc_rx_desc_rcar, + .receive = ravb_rx_rcar, + .set_rate = ravb_set_rate_rcar, + .set_feature = ravb_set_features_rcar, + .dmac_init = ravb_dmac_init_rcar, + .emac_init = ravb_emac_init_rcar, + .gstrings_stats = ravb_gstrings_stats, + .gstrings_size = sizeof(ravb_gstrings_stats), + .net_hw_features = NETIF_F_RXCSUM, + .net_features = NETIF_F_RXCSUM, + .stats_len = ARRAY_SIZE(ravb_gstrings_stats), + .max_rx_len = RX_BUF_SZ + RAVB_ALIGN - 1, + .tccr_mask = TCCR_TSRQ0 | TCCR_TSRQ1 | TCCR_TSRQ2 | TCCR_TSRQ3, + .rx_max_buf_size = SZ_2K, + .multi_irqs = 1, + .err_mgmt_irqs = 1, + .gptp = 1, + .gptp_ref_clk = 1, + .nc_queues = 1, + .magic_pkt = 1, +}; + static const struct ravb_hw_info gbeth_hw_info = { .rx_ring_free = ravb_rx_ring_free_gbeth, .rx_ring_format = ravb_rx_ring_format_gbeth, @@ -2487,6 +2512,7 @@ static const struct of_device_id ravb_match_table[] = { { .compatible = "renesas,etheravb-rcar-gen2", .data = &ravb_gen2_hw_info }, { .compatible = "renesas,etheravb-r8a7795", .data = &ravb_gen3_hw_info }, { .compatible = "renesas,etheravb-rcar-gen3", .data = &ravb_gen3_hw_info }, + { .compatible = "renesas,etheravb-rzv2m", .data = &ravb_rzv2m_hw_info }, { .compatible = "renesas,rzg2l-gbeth", .data = &gbeth_hw_info }, { } };