From patchwork Wed Jul 19 13:20:14 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aleksandr Bezzubikov X-Patchwork-Id: 9852017 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 534B4602C8 for ; Wed, 19 Jul 2017 13:21:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 41B49285F0 for ; Wed, 19 Jul 2017 13:21:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3671C2867F; Wed, 19 Jul 2017 13:21:32 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=2.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id B5DC0285F0 for ; Wed, 19 Jul 2017 13:21:31 +0000 (UTC) Received: from localhost ([::1]:33453 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dXouw-000752-IM for patchwork-qemu-devel@patchwork.kernel.org; Wed, 19 Jul 2017 09:21:30 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38822) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dXotx-000744-E0 for qemu-devel@nongnu.org; Wed, 19 Jul 2017 09:20:30 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dXotu-0006D6-UQ for qemu-devel@nongnu.org; Wed, 19 Jul 2017 09:20:29 -0400 Received: from mail-lf0-x242.google.com ([2a00:1450:4010:c07::242]:36745) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1dXotu-0006Cn-NK for qemu-devel@nongnu.org; Wed, 19 Jul 2017 09:20:26 -0400 Received: by mail-lf0-x242.google.com with SMTP id l200so915557lfb.3 for ; Wed, 19 Jul 2017 06:20:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=m759tikvzbmSTciKP72VDICgSiqKngbEySkWB6wqQKE=; b=ri9euXakhi5fMLKyBik++GRo/e/i0b227mANF1tpDnQ5gRFiLuSDckF81BvnVqkUm5 qeg1HZu/SynSyMMhSZdMaE0FTC6QfmseLoeFrtV2SS321sqQt9a3+gzLX+dw5DczBJzc JRdFFaKH5yOEcBBGXvqBwiwJRnfPI0pFMROA1oox4YgriSNBRjwM/anNhGXnST6Wj/TJ H7ClyI0EPpmWv9vqzUaApTM8Z2tidtMz8aDHLw3XOzHqGPEcGY/zp2EtsRqWGpPmG1vM +rJAQ8Qar8I4CKDY3pzaqEh0hgMAKUILOtTWm/zUrMuGHtP08/sjwjjbWh4VJzgu+teA 6J/Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=m759tikvzbmSTciKP72VDICgSiqKngbEySkWB6wqQKE=; b=bOrXmc/v9+7q8PWbsImgdqPTDMcQmeyKv9Uazma7TbO0DX1FbjWfcaqCRlA1PGpKTM D/JSAqgxBzJXMOhGkZTZxlb+SL1oTdRkueTvAdW7+0cx+RWb5tyjnJFUQIOpMdIssA0z u0NGTGWjl6PipujAa+t4QQHIWFnDHydwpT5QHuyyXjmjR1zYP6EiDzQgEt/nv9CcLh6H rNZ3pkaljQdNX/qRHlTI2yYipI240IlxL3OfP/POfwMWYYVmzY7+EOMgUdJxuxZw9N7T bDLOUXhrxJA4sGYAqrAOZ0o5BqEs+MPELWK4ZWeb8iA1g8kY33Ei+Mr0hFzTwo+Pi9yx FBfg== X-Gm-Message-State: AIVw113T7JgNl3SoyWC9o7v7lYqsVZZ2VdR3Fpyd9duF8sMXXPxANCGh COdnD3LMXE7XAUeC X-Received: by 10.25.170.3 with SMTP id t3mr18480lfe.51.1500470425604; Wed, 19 Jul 2017 06:20:25 -0700 (PDT) Received: from zuban32-isp.intra.ispras.ru (bran.ispras.ru. [83.149.199.196]) by smtp.gmail.com with ESMTPSA id 62sm6826lfz.20.2017.07.19.06.20.24 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 19 Jul 2017 06:20:24 -0700 (PDT) From: Aleksandr Bezzubikov To: seabios@seabios.org Date: Wed, 19 Jul 2017 16:20:14 +0300 Message-Id: <1500470414-7911-3-git-send-email-zuban32s@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1500470414-7911-1-git-send-email-zuban32s@gmail.com> References: <1500470414-7911-1-git-send-email-zuban32s@gmail.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4010:c07::242 Subject: [Qemu-devel] [RFC PATCH 2/2] pci: enable RedHat pci bridges to reserve more buses X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcel@redhat.com, qemu-devel@nongnu.org, Aleksandr Bezzubikov Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP In case of RedHat PCI bridges reserve additional buses, which number is provided in a vendor-specific capability. Signed-off-by: Aleksandr Bezzubikov --- src/fw/pciinit.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/src/fw/pciinit.c b/src/fw/pciinit.c index 08221e6..b6f3a01 100644 --- a/src/fw/pciinit.c +++ b/src/fw/pciinit.c @@ -578,9 +578,17 @@ pci_bios_init_bus_rec(int bus, u8 *pci_bus) pci_bios_init_bus_rec(secbus, pci_bus); if (subbus != *pci_bus) { + u16 vendor = pci_config_readw(bdf, PCI_VENDOR_ID); + u8 res_bus = 0; + if (vendor == 0x1b36) { + u8 cap = pci_find_capability_bdf(bdf, PCI_CAP_ID_VNDR, 0); + if (cap) { + res_bus = pci_config_readb(bdf, cap + 16); + } + } dprintf(1, "PCI: subordinate bus = 0x%x -> 0x%x\n", - subbus, *pci_bus); - subbus = *pci_bus; + subbus, *pci_bus + res_bus); + subbus = *pci_bus + res_bus; } else { dprintf(1, "PCI: subordinate bus = 0x%x\n", subbus); }