From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpout-02.galae.net (smtpout-02.galae.net [185.246.84.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 303703C1D4F for ; Mon, 31 Aug 2026 07:01:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.246.84.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788159710; cv=none; b=YMcD1f1PsAbN3pFt46J4vXZtX80Nz/fZcf+HjoRKrKBv8zw+j6rs6VPGIh5fY6CMtx1doNzBP7NPT98kogZX8IuMK5Tmfx13Qj1mByl8lySq7y/KlZ1VuAEwdZraCLkeV9y3M2pKzWs6ZaROyCkHyGx8XBBjKevWZ608L+wYcYs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788159710; c=relaxed/simple; bh=jlX20ZSKwhf7V5jBoOYcaZ37EYu7IOXjGdlfLGsDv1c=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=EFHPYXsjP8zqAGap5jtyEoKn3q6FHJTc2cl7hGwMnrZcskJ3Co1giZt0RusPKxD6Ajtex2+tl7+abXGcYhBw0SjCcfipu2rznbvk6kqEgQgA7wF09vlSSXyAuo958465bsflKi8pWPgd0+hA8iTj+Nl9TCakitxWNqvOaKo4qTU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=c9hjm12x; arc=none smtp.client-ip=185.246.84.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="c9hjm12x" Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-02.galae.net (Postfix) with ESMTPS id B63C81A18E7; Mon, 31 Aug 2026 07:01:45 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 881F1601E1; Mon, 31 Aug 2026 07:01:45 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id EBA4E11C78A03; Mon, 31 Aug 2026 09:01:38 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1788159700; h=from:subject:date:message-id:to:cc:mime-version: content-transfer-encoding:in-reply-to:references; bh=OXqMCRoQXVkihjLttQXA7lMF61U2RKr6mJhVeRjSKZ4=; b=c9hjm12xDvKljAIHLcp7vSBYOqe9hu9+BboALzGB//G67CoWn3vxznJ10hQjj9qBrM389Z aeRpqlbYYwQIGISmXHYaQ6bz0gVZp5i0OKF6lUFsOaE814/Doymm+Pl1wtxXvwI5G7LQd5 RuwgE1ymIvNdV/VHrShJU4d/hy6Bbfib6kKfJD90Wi9xorBXSMEM7V+EpTXx/7rP3bM4pZ oFBr4fd7VQRTQjTiY+V2UNVycQf/wwcmSrjyWpAejAX42ni41HfbfUgeITqxgmUnp2ZtzD 0z5Ic7FrcRSY74mmywP1tLY+CPIxYiA8g4gkemkdlfq0CXTqrzqq0jvmeBZZ2w== From: Maxime Chevallier To: Andrew Lunn , Jakub Kicinski , davem@davemloft.net, Eric Dumazet , Paolo Abeni , Simon Horman , Maxime Coquelin , Alexandre Torgue , Russell King Cc: Maxime Chevallier , thomas.petazzoni@bootlin.com, =?UTF-8?q?Alexis=20Lothor=C3=A9?= , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com Subject: [PATCH net-next 1/2] net: stmmac: dwmac4: Read the UC filter size from hardware capabilities Date: Mon, 31 Aug 2026 09:01:19 +0200 Message-ID: <20260831070121.349778-2-maxime.chevallier@bootlin.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260831070121.349778-1-maxime.chevallier@bootlin.com> References: <20260831070121.349778-1-maxime.chevallier@bootlin.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Last-TLS-Session-Version: TLSv1.3 dwmac4 has multiple banks of perfect filter entries, independently configurable during IP integration. The multi_addr bank reports a number between 0 and 31 corresponding to the actual number of entries in that bank, while the 32 and 64 banks are all-or-nothing. Expose these caps over debugfs as well. Signed-off-by: Maxime Chevallier --- drivers/net/ethernet/stmicro/stmmac/common.h | 2 ++ drivers/net/ethernet/stmicro/stmmac/dwmac4.h | 4 +++- drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c | 2 ++ drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 12 ++++++++++++ 4 files changed, 19 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h index 927ea6230073..77bd47a83357 100644 --- a/drivers/net/ethernet/stmicro/stmmac/common.h +++ b/drivers/net/ethernet/stmicro/stmmac/common.h @@ -419,6 +419,8 @@ struct dma_features { unsigned int half_duplex; unsigned int hash_filter; unsigned int multi_addr; + unsigned int additional_32_addr; + unsigned int additional_64_addr; unsigned int pcs; unsigned int sma_mdio; unsigned int pmt_remote_wake_up; diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h index 6382836828ba..89368e34a388 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h @@ -176,7 +176,9 @@ enum power_event { /* MAC HW features0 bitmap */ #define GMAC_HW_FEAT_SAVLANINS BIT(27) -#define GMAC_HW_FEAT_ADDMAC BIT(18) +#define GMAC_HW_FEAT_MACADR64SEL BIT(24) +#define GMAC_HW_FEAT_MACADR32SEL BIT(23) +#define GMAC_HW_FEAT_ADDMAC GENMASK(22, 18) #define GMAC_HW_FEAT_RXCOESEL BIT(16) #define GMAC_HW_FEAT_TXCOSEL BIT(14) #define GMAC_HW_FEAT_EEESEL BIT(13) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c index 23ffe1adcd0d..14ac3f0e51f7 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c @@ -388,6 +388,8 @@ static int dwmac4_get_hw_feature(void __iomem *ioaddr, dma_cap->half_duplex = (hw_cap & GMAC_HW_FEAT_HDSEL) >> 2; dma_cap->vlhash = (hw_cap & GMAC_HW_FEAT_VLHASH) >> 4; dma_cap->multi_addr = (hw_cap & GMAC_HW_FEAT_ADDMAC) >> 18; + dma_cap->additional_32_addr = (hw_cap & GMAC_HW_FEAT_MACADR32SEL) >> 23; + dma_cap->additional_64_addr = (hw_cap & GMAC_HW_FEAT_MACADR64SEL) >> 24; dma_cap->pcs = (hw_cap & GMAC_HW_FEAT_PCSSEL) >> 3; dma_cap->sma_mdio = (hw_cap & GMAC_HW_FEAT_SMASEL) >> 5; dma_cap->pmt_remote_wake_up = (hw_cap & GMAC_HW_FEAT_RWKSEL) >> 6; diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index f2fc89176654..a885f8cfef21 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -6580,6 +6580,18 @@ static int stmmac_dma_cap_show(struct seq_file *seq, void *v) seq_printf(seq, "\tNumber of Additional MAC address registers: %d\n", priv->dma_cap.multi_addr); + } else if (priv->plat->core_type == DWMAC_CORE_GMAC4) { + seq_printf(seq, + "\tNumber of MAC address registers (1-31): %d\n", + priv->dma_cap.multi_addr); + seq_printf(seq, + "\tAdditional 32 MAC address registers (32-63): %s\n", + priv->dma_cap.additional_32_addr ? "Y" : "N"); + seq_printf(seq, + "\tAdditional 64 MAC address registers (64-127): %s\n", + priv->dma_cap.additional_64_addr ? "Y" : "N"); + seq_printf(seq, "\tHash Filter: %s\n", + (priv->dma_cap.hash_filter) ? "Y" : "N"); } else { seq_printf(seq, "\tHash Filter: %s\n", (priv->dma_cap.hash_filter) ? "Y" : "N"); -- 2.55.0