From patchwork Tue May 17 09:04:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Long Li X-Patchwork-Id: 12852167 X-Patchwork-Delegate: jgg@ziepe.ca 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 A1F25C433EF for ; Tue, 17 May 2022 09:05:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244152AbiEQJFN (ORCPT ); Tue, 17 May 2022 05:05:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52900 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244065AbiEQJEw (ORCPT ); Tue, 17 May 2022 05:04:52 -0400 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 123B14832A; Tue, 17 May 2022 02:04:47 -0700 (PDT) Received: by linux.microsoft.com (Postfix, from userid 1004) id 2F77320F3D1A; Tue, 17 May 2022 02:04:47 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 2F77320F3D1A DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxonhyperv.com; s=default; t=1652778287; bh=0dsZ0bZFwegjOW5xJagkjlSAdsffEmIkK2SaE7ckO08=; h=From:To:Cc:Subject:Date:In-Reply-To:References:Reply-To:From; b=egE5OchiO0fxF84xVynNCRfmpjAyZZxAOuUpEmtbfS/X0EtWtzESK702X5qy/4yCu IKvDTmbpNzW9Own9TOgvYS3tLEAGwWL/8llSb4GThHVIWVYncZAklLbYoeKJt3bZuT gdEyvGSGSfOYKWrJt6D55ZvIOwmmS5b2ibTe0fgI= From: longli@linuxonhyperv.com To: "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Wei Liu , Dexuan Cui , "David S. Miller" , Jakub Kicinski , Paolo Abeni , Jason Gunthorpe , Leon Romanovsky Cc: linux-hyperv@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, Long Li Subject: [PATCH 02/12] net: mana: Record the physical address for doorbell page region Date: Tue, 17 May 2022 02:04:26 -0700 Message-Id: <1652778276-2986-3-git-send-email-longli@linuxonhyperv.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1652778276-2986-1-git-send-email-longli@linuxonhyperv.com> References: <1652778276-2986-1-git-send-email-longli@linuxonhyperv.com> Reply-To: longli@microsoft.com Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Long Li For supporting RDMA device with multiple user contexts with their individual doorbell pages, record the start address of doorbell page region for use by the RDMA driver to allocate user context doorbell IDs. Signed-off-by: Long Li --- drivers/net/ethernet/microsoft/mana/gdma.h | 2 ++ drivers/net/ethernet/microsoft/mana/gdma_main.c | 4 ++++ 2 files changed, 6 insertions(+) diff --git a/drivers/net/ethernet/microsoft/mana/gdma.h b/drivers/net/ethernet/microsoft/mana/gdma.h index d815d323be87..c724ca410fcb 100644 --- a/drivers/net/ethernet/microsoft/mana/gdma.h +++ b/drivers/net/ethernet/microsoft/mana/gdma.h @@ -350,9 +350,11 @@ struct gdma_context { struct completion eq_test_event; u32 test_event_eq_id; + phys_addr_t bar0_pa; void __iomem *bar0_va; void __iomem *shm_base; void __iomem *db_page_base; + phys_addr_t phys_db_page_base; u32 db_page_size; /* Shared memory chanenl (used to bootstrap HWC) */ diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c index 49b85ca578b0..9fafaa0c8e76 100644 --- a/drivers/net/ethernet/microsoft/mana/gdma_main.c +++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c @@ -27,6 +27,9 @@ static void mana_gd_init_registers(struct pci_dev *pdev) gc->db_page_base = gc->bar0_va + mana_gd_r64(gc, GDMA_REG_DB_PAGE_OFFSET); + gc->phys_db_page_base = gc->bar0_pa + + mana_gd_r64(gc, GDMA_REG_DB_PAGE_OFFSET); + gc->shm_base = gc->bar0_va + mana_gd_r64(gc, GDMA_REG_SHM_OFFSET); } @@ -1335,6 +1338,7 @@ static int mana_gd_probe(struct pci_dev *pdev, const struct pci_device_id *ent) mutex_init(&gc->eq_test_event_mutex); pci_set_drvdata(pdev, gc); + gc->bar0_pa = pci_resource_start(pdev, 0); bar0_va = pci_iomap(pdev, bar, 0); if (!bar0_va)