From nobody Mon Feb 9 13:48:19 2026 Received: from mail-pg1-f172.google.com (mail-pg1-f172.google.com [209.85.215.172]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 166C830DD05 for ; Thu, 23 Oct 2025 11:21:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761218496; cv=none; b=cYcFQUN2DE2/1Ca6SpnvZC1G+qSNGXiSTje9NPQyH3PrP9pSmSmhXVRkzJs8lSZGCnH8PgibwPKHJApr9CDOD9+1WOM9MJkwykky0Wp4n6BwSJcZYK9/gG6cOdTGfASEIMj0h6JO702AE0uhnR4W0GNIq0cD3zGeGlmS+Vdonko= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761218496; c=relaxed/simple; bh=CmjkxUl2B4gcVD2tZkJFcLi96gcIgTB3FlH827BDatg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Rwhjd1Q8yQjAHx1m4um43UEHMQHPLHzDjJLETHu/bySljfsdmDhC5bjKqvWAyWEWVTdaczFyHEcXqu+/3s93gTL1XuM9prey7MnHHiOwTFezRJJjHkL4h8n1+UGPGIbtxyJfBFNTTtsrTHD3ZTY17xqqYucK0djg8C16t6VnfLQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=GW4zf9KK; arc=none smtp.client-ip=209.85.215.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="GW4zf9KK" Received: by mail-pg1-f172.google.com with SMTP id 41be03b00d2f7-b6ceba7c97eso624201a12.0 for ; Thu, 23 Oct 2025 04:21:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1761218494; x=1761823294; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=xdknUZBEvMejmz26Y7kCdJWkxsoHQ3qjiKzOInvA+JE=; b=GW4zf9KKV2oPpnt9BzF5YIzmaIpApee7BNzXY2nf0u5zQ/veV+wej2ii4VvDt3C8h1 o9uvq9tiVdxi6OPj6Zaix+cAhQ6Z/Qvv2J129lyIxKeLVtlA6uVpYNQnIMQNhgWFRQbZ pqq1AfGigaMwwXcFcWseIU+e730O/NM0sd9gB+1CuLruoS3E4l3MiQULKhn6z0m5W7T4 Vudl4qaRsKuscbYi65Ea/w7e1J0cVo+R1KS3pSXoBncJH04GxAxWLML9LhY539eQl60j DYtJ5xDsVbWpjYetDLVXWfOf60Z6wn5x3bZ7MFTH1jZurVautlHfjOsoZrK4ln1Alt9m sFtg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1761218494; x=1761823294; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=xdknUZBEvMejmz26Y7kCdJWkxsoHQ3qjiKzOInvA+JE=; b=L1+b3FHRm50tVVQHbFz93uL2QSTy1fqvoE+51bZLOVaRm9xknBqPUHcDPvRxyCrlYU glzXt9Bg9KyiFmVHXJ4CKS6gsAcGrBSj5nBOpxkJLE40uStvALkFYJPGAN5G7xSjXGfP 9EtTSakVY9Ky6Y0tCGA27yJEAV7sdqOBRGgui2ETQeFmSEdne+DvZwpyVqRpUS+ZULHP kopFnVQbZxRvN9o53osBy1oE38gyaAawdVaKMdXfDYB8e3Ev1YZ51saYG4dzZwF3uUaD jokguTAbhFgcCvk7zbF/aXN51yJ9iiWPROEbgWqhL42L/+zS4nYnvXI6EFq20zWKdOoD IIfA== X-Forwarded-Encrypted: i=1; AJvYcCXDUcwVzJDMQ4Q7wmGAI9E/N6P/fNbY3Coj6XLzksKSIiUpnGP1nHjII0rjJ/JZYkstYcyYo2Ti57V94Ak=@vger.kernel.org X-Gm-Message-State: AOJu0YxBFm6W4AwtgYcWQh33eTtAwwdoI6QyAQQ9EcOQQNYPiDz/nqQv D3/WyxnQxm8+/XYFkEVhBp+B5pdn9wbtEGHvbbyyRUUoYun0npo9RAck X-Gm-Gg: ASbGnctEzBRFOu3x1GyuJ1UTLq8gb+8145NdOL1R80laY0jqL/6m72j+J00XlnycRga VGYD0iUTjYN7ICpT8HDXIAMt83ML7Uo4Mxqn7NDjGBLXiaXAd7Vns1UxBpSw7nrUMzRXOCp/pNt Mv+sjqvnm5pPtJxwzWC2HRsMZlFLKTXBFk+u0RbYp9XfyI78uF1/sN7yjrlICfNvO2Uert/Is8w MFlon7D8gz865gN04VwPgD0cnXFgLMx9SphKTjQnC/Ab/1Z0FapvWBgkJVDCF8RNXog3sUFf+ti 6ZEdW+liMkHJSlDLcZH1FH9fFA0aT+7X6f05EE20gbnFZz3a48Xoi7pnd+7lgoFffgfY3sftP5V AymK5ghwRMp4ozmZILJILStex/qPvpOVyfdXJRXQRK2f5fENn9xuoqlUMMIXPGfuWZA0iTqQzFq /R3kitQwswZu0HgLqsgADu0eL9PeeXmw== X-Google-Smtp-Source: AGHT+IHhR2GItXtV6WNlADwI9HrIc3aHaXMzVFncN4DWgVReWJcQFzyOQdmWPBHS+USEe+R+b9Z10w== X-Received: by 2002:a17:902:ce12:b0:267:a55a:8684 with SMTP id d9443c01a7336-290c9c93abbmr268228055ad.2.1761218494270; Thu, 23 Oct 2025 04:21:34 -0700 (PDT) Received: from iku.. ([2401:4900:1c06:ef2:36b5:9454:6fa:e888]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2946dded613sm20226885ad.37.2025.10.23.04.21.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Oct 2025 04:21:33 -0700 (PDT) From: Prabhakar X-Google-Original-From: Prabhakar To: =?UTF-8?q?Niklas=20S=C3=B6derlund?= , Paul Barker , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar , Biju Das , Fabrizio Castro , Lad Prabhakar , =?UTF-8?q?Niklas=20S=C3=B6derlund?= Subject: [PATCH net-next v3 1/2] net: ravb: Make DBAT entry count configurable per-SoC Date: Thu, 23 Oct 2025 12:21:10 +0100 Message-ID: <20251023112111.215198-2-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251023112111.215198-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20251023112111.215198-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable From: Lad Prabhakar Avoid wasting coherent DMA memory by allocating the descriptor base address table sized for the actual number of DBAT/CDARq entries supported by the SoC. Some platforms (for example GBETH) only provide two CDARq entries; previously the driver always allocated space for 22 entries which needlessly consumed memory on those systems. Pass the per-SoC dbat_entry_num via struct ravb_hw_info and use it for allocation and initialization in probe. This sizes the table correctly and removes the unnecessary memory overhead on SoCs with fewer DBAT entries. Signed-off-by: Lad Prabhakar Reviewed-by: Niklas S=C3=B6derlund --- v2->v3: - Reworded commit message for clarity. v1->v2: - Added Reviewed-by tag from Niklas. --- drivers/net/ethernet/renesas/ravb.h | 2 +- drivers/net/ethernet/renesas/ravb_main.c | 9 +++++++-- 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/ren= esas/ravb.h index 7b48060c250b..d65cd83ddd16 100644 --- a/drivers/net/ethernet/renesas/ravb.h +++ b/drivers/net/ethernet/renesas/ravb.h @@ -1017,7 +1017,6 @@ enum CSR2_BIT { #define CSR2_CSUM_ENABLE (CSR2_RTCP4 | CSR2_RUDP4 | CSR2_RICMP4 | \ CSR2_RTCP6 | CSR2_RUDP6 | CSR2_RICMP6) =20 -#define DBAT_ENTRY_NUM 22 #define RX_QUEUE_OFFSET 4 #define NUM_RX_QUEUE 2 #define NUM_TX_QUEUE 2 @@ -1062,6 +1061,7 @@ struct ravb_hw_info { u32 rx_max_frame_size; u32 rx_buffer_size; u32 rx_desc_size; + u32 dbat_entry_num; unsigned aligned_tx: 1; unsigned coalesce_irqs:1; /* Needs software IRQ coalescing */ =20 diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/etherne= t/renesas/ravb_main.c index 9d3bd65b85ff..69d382e8757d 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -2694,6 +2694,7 @@ static const struct ravb_hw_info ravb_gen2_hw_info = =3D { .rx_buffer_size =3D SZ_2K + SKB_DATA_ALIGN(sizeof(struct skb_shared_info)), .rx_desc_size =3D sizeof(struct ravb_ex_rx_desc), + .dbat_entry_num =3D 22, .aligned_tx =3D 1, .gptp =3D 1, .nc_queues =3D 1, @@ -2717,6 +2718,7 @@ static const struct ravb_hw_info ravb_gen3_hw_info = =3D { .rx_buffer_size =3D SZ_2K + SKB_DATA_ALIGN(sizeof(struct skb_shared_info)), .rx_desc_size =3D sizeof(struct ravb_ex_rx_desc), + .dbat_entry_num =3D 22, .internal_delay =3D 1, .tx_counters =3D 1, .multi_irqs =3D 1, @@ -2743,6 +2745,7 @@ static const struct ravb_hw_info ravb_gen4_hw_info = =3D { .rx_buffer_size =3D SZ_2K + SKB_DATA_ALIGN(sizeof(struct skb_shared_info)), .rx_desc_size =3D sizeof(struct ravb_ex_rx_desc), + .dbat_entry_num =3D 22, .internal_delay =3D 1, .tx_counters =3D 1, .multi_irqs =3D 1, @@ -2769,6 +2772,7 @@ static const struct ravb_hw_info ravb_rzv2m_hw_info = =3D { .rx_buffer_size =3D SZ_2K + SKB_DATA_ALIGN(sizeof(struct skb_shared_info)), .rx_desc_size =3D sizeof(struct ravb_ex_rx_desc), + .dbat_entry_num =3D 22, .multi_irqs =3D 1, .err_mgmt_irqs =3D 1, .gptp =3D 1, @@ -2794,6 +2798,7 @@ static const struct ravb_hw_info gbeth_hw_info =3D { .rx_max_frame_size =3D SZ_8K, .rx_buffer_size =3D SZ_2K, .rx_desc_size =3D sizeof(struct ravb_rx_desc), + .dbat_entry_num =3D 2, .aligned_tx =3D 1, .coalesce_irqs =3D 1, .tx_counters =3D 1, @@ -3025,7 +3030,7 @@ static int ravb_probe(struct platform_device *pdev) ravb_parse_delay_mode(np, ndev); =20 /* Allocate descriptor base address table */ - priv->desc_bat_size =3D sizeof(struct ravb_desc) * DBAT_ENTRY_NUM; + priv->desc_bat_size =3D sizeof(struct ravb_desc) * info->dbat_entry_num; priv->desc_bat =3D dma_alloc_coherent(ndev->dev.parent, priv->desc_bat_si= ze, &priv->desc_bat_dma, GFP_KERNEL); if (!priv->desc_bat) { @@ -3035,7 +3040,7 @@ static int ravb_probe(struct platform_device *pdev) error =3D -ENOMEM; goto out_rpm_put; } - for (q =3D RAVB_BE; q < DBAT_ENTRY_NUM; q++) + for (q =3D RAVB_BE; q < info->dbat_entry_num; q++) priv->desc_bat[q].die_dt =3D DT_EOS; =20 /* Initialise HW timestamp list */ --=20 2.43.0 From nobody Mon Feb 9 13:48:19 2026 Received: from mail-pl1-f176.google.com (mail-pl1-f176.google.com [209.85.214.176]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 02E0930C35A for ; Thu, 23 Oct 2025 11:21:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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([2401:4900:1c06:ef2:36b5:9454:6fa:e888]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2946dded613sm20226885ad.37.2025.10.23.04.21.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Oct 2025 04:21:39 -0700 (PDT) From: Prabhakar X-Google-Original-From: Prabhakar To: =?UTF-8?q?Niklas=20S=C3=B6derlund?= , Paul Barker , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar , Biju Das , Fabrizio Castro , Lad Prabhakar , =?UTF-8?q?Niklas=20S=C3=B6derlund?= Subject: [PATCH net-next v3 2/2] net: ravb: Allocate correct number of queues based on SoC support Date: Thu, 23 Oct 2025 12:21:11 +0100 Message-ID: <20251023112111.215198-3-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251023112111.215198-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20251023112111.215198-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable From: Lad Prabhakar Use the per-SoC match data flag `nc_queues` to decide how many TX/RX queues to allocate. If the SoC does not provide a network-control queue, fall back to a single TX/RX queue. Obtain the match data before calling alloc_etherdev_mqs() so the allocation is sized correctly. Signed-off-by: Lad Prabhakar Reviewed-by: Niklas S=C3=B6derlund --- v2->v3: - Reworded commit message for clarity. v1->v2: - Added Reviewed-by tag from Niklas. --- drivers/net/ethernet/renesas/ravb_main.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/etherne= t/renesas/ravb_main.c index 69d382e8757d..a200e205825a 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -2926,13 +2926,14 @@ static int ravb_probe(struct platform_device *pdev) return dev_err_probe(&pdev->dev, PTR_ERR(rstc), "failed to get cpg reset\n"); =20 + info =3D of_device_get_match_data(&pdev->dev); + ndev =3D alloc_etherdev_mqs(sizeof(struct ravb_private), - NUM_TX_QUEUE, NUM_RX_QUEUE); + info->nc_queues ? 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