From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 51FB54A1D; Wed, 18 Jun 2025 01:36:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750210612; cv=none; b=j2CGyFyBVQQI9AJ+cf2V/8M4HygFDAoepIB4xO6A76eb40jb8DvFpQUf3XI6m+UgbNyTKctSXQaG1V0NqoyANbj/ldR5NMnMuSFg45cOAVcgvICk7utEJw3WYncDXfJZJzhZTGZ+dCWhn89R1LrlNgcb0UdNlcLSb4u2/vC/I4U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750210612; c=relaxed/simple; bh=0YXcTlTA8MQJecj8M0ciHnHSxcN58n9/4eqEv7wyl8w=; h=From:To:Cc:Subject:Date:Message-Id; b=fTYXHzdajNNHBSqTRM48AjDX3ekS4rS3Q8ZF6wFVqMagcHcKw7PQ9iK3Y2dgd44ag+Akck900eKKtZTOn9EfVgOgMzfX5NHaSAn20ZpaHop8QhpZKs2v+UgnYQLGVKLgFptNumeYti+yT2IHGD3P6jxYfSi3xQjf/DX4RmfBkqw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linuxonhyperv.com; spf=pass smtp.mailfrom=linux.microsoft.com; dkim=pass (1024-bit key) header.d=linuxonhyperv.com header.i=@linuxonhyperv.com header.b=DYQSFL0K; arc=none smtp.client-ip=13.77.154.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linuxonhyperv.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxonhyperv.com header.i=@linuxonhyperv.com header.b="DYQSFL0K" Received: by linux.microsoft.com (Postfix, from userid 1202) id CABE0201FF46; Tue, 17 Jun 2025 18:36:50 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com CABE0201FF46 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxonhyperv.com; s=default; t=1750210610; bh=1h0AInxYHYfF4/KB+FPDZESjCJlmWWe6zwOwKGbLEP4=; h=From:To:Cc:Subject:Date:Reply-To:From; b=DYQSFL0KzEfpSDh+MpS0jQgGHPN0cyzAZRe5jfVhgtP6OrFYIAYzqsmTJWJGwI5TM tyjblO/eNd7CVbKIDRXpJ8/xStjpyJQ+w2nkKiy5FLraqilAs9BCEshakh7F3nQdQd 87/NM5r3pt52sJSiz4EUT17udVQUCtNWjjT0TT0s= From: longli@linuxonhyperv.com To: "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Shradha Gupta , Simon Horman , Konstantin Taranov , Souradeep Chakrabarti , Erick Archer , linux-hyperv@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org Cc: Long Li Subject: [Patch net-next v3] net: mana: Record doorbell physical address in PF mode Date: Tue, 17 Jun 2025 18:36:46 -0700 Message-Id: <1750210606-12167-1-git-send-email-longli@linuxonhyperv.com> X-Mailer: git-send-email 1.8.3.1 Reply-To: longli@microsoft.com Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: From: Long Li MANA supports RDMA in PF mode. The driver should record the doorbell physical address when in PF mode. The doorbell physical address is used by the RDMA driver to map doorbell pages of the device to user-mode applications through RDMA verbs interface. In the past, they have been mapped to user-mode while the device is in VF mode. With the support for PF mode implemented, also expose those pages in PF mode. Support for PF mode is implemented in 290e5d3c49f6 ("net: mana: Add support for Multi Vports on Bare metal") Signed-off-by: Long Li --- Changes v2: add more details in commit message on how the doorbell physical address is used v3: add the early commit detail where the support for PF mode is implemented drivers/net/ethernet/microsoft/mana/gdma_main.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c index 3504507477c6..52cf7112762c 100644 --- a/drivers/net/ethernet/microsoft/mana/gdma_main.c +++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c @@ -31,6 +31,9 @@ static void mana_gd_init_pf_regs(struct pci_dev *pdev) gc->db_page_base = gc->bar0_va + mana_gd_r64(gc, GDMA_PF_REG_DB_PAGE_OFF); + gc->phys_db_page_base = gc->bar0_pa + + mana_gd_r64(gc, GDMA_PF_REG_DB_PAGE_OFF); + sriov_base_off = mana_gd_r64(gc, GDMA_SRIOV_REG_CFG_BASE_OFF); sriov_base_va = gc->bar0_va + sriov_base_off; -- 2.25.1