From patchwork Thu May 23 05:29:11 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Gibson X-Patchwork-Id: 10956909 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3796713AD for ; Thu, 23 May 2019 05:36:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1223727F81 for ; Thu, 23 May 2019 05:36:23 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0246727FA8; Thu, 23 May 2019 05:36:22 +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=-5.0 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 8C67727F81 for ; Thu, 23 May 2019 05:36:22 +0000 (UTC) Received: from localhost ([127.0.0.1]:58004 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hTgOr-0004ns-MT for patchwork-qemu-devel@patchwork.kernel.org; Thu, 23 May 2019 01:36:21 -0400 Received: from eggs.gnu.org ([209.51.188.92]:41284) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hTgIM-00080J-Gj for qemu-devel@nongnu.org; Thu, 23 May 2019 01:29:39 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hTgII-0005hN-NL for qemu-devel@nongnu.org; Thu, 23 May 2019 01:29:38 -0400 Received: from ozlabs.org ([2401:3900:2:1::2]:52941) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hTgIF-0005em-EA; Thu, 23 May 2019 01:29:33 -0400 Received: by ozlabs.org (Postfix, from userid 1007) id 458dNL3ZWLz9s6w; Thu, 23 May 2019 15:29:21 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gibson.dropbear.id.au; s=201602; t=1558589362; bh=gs+yX4Rpc3mi9205nXqZ5YZPkPALH1nmnc7QtQ5Y84A=; h=From:To:Cc:Subject:Date:From; b=fxy8AIYOGyegWUqWWNpsPQ3AOOh1inQeTIlpQLQRXe0iAFYAfMhQOiFTgljOILKr/ IFp2619X0l04Gy9kIFREYk/ORU1TiJMz0xj3LIzfM0tNOnTr/cN2u3Jtdeb8EPQfza 4pVY32c/oEX4+us5pwW3IzZHLmcpuWXFVqpybwpU= From: David Gibson To: qemu-ppc@nongnu.org Date: Thu, 23 May 2019 15:29:11 +1000 Message-Id: <20190523052918.1129-1-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2401:3900:2:1::2 Subject: [Qemu-devel] [PATCH 1/8] spapr: Clean up device node name generation for PCI devices 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: mst@redhat.com, qemu-devel@nongnu.org, groug@kaod.org, clg@kaod.org, mdroth@linux.ibm.com, David Gibson Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP spapr_populate_pci_child_dt() adds a 'name' property to the device tree node for PCI devices. This is never necessary for a flattened device tree, it is implicit in the name added when the node is constructed. In fact anything we do add to a 'name' property will be overwritten with something derived from the structural name in the guest firmware (but in fact it is exactly the same bytes). So, remove that. In addition, pci_get_node_name() is very simple, so fold it into its (also simple) sole caller spapr_create_pci_child_dt(). While we're there rename pci_find_device_name() to the shorter and more accurate dt_name_from_class(). Signed-off-by: David Gibson Reviewed-by: Greg Kurz Acked-by: Michael S. Tsirkin --- hw/ppc/spapr_pci.c | 43 +++++++++++++++++-------------------------- 1 file changed, 17 insertions(+), 26 deletions(-) diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c index 97961b0128..b2db46ef1d 100644 --- a/hw/ppc/spapr_pci.c +++ b/hw/ppc/spapr_pci.c @@ -1173,8 +1173,8 @@ static const PCIClass pci_classes[] = { { "data-processing-controller", spc_subclass }, }; -static const char *pci_find_device_name(uint8_t class, uint8_t subclass, - uint8_t iface) +static const char *dt_name_from_class(uint8_t class, uint8_t subclass, + uint8_t iface) { const PCIClass *pclass; const PCISubClass *psubclass; @@ -1216,23 +1216,6 @@ static const char *pci_find_device_name(uint8_t class, uint8_t subclass, return name; } -static gchar *pci_get_node_name(PCIDevice *dev) -{ - int slot = PCI_SLOT(dev->devfn); - int func = PCI_FUNC(dev->devfn); - uint32_t ccode = pci_default_read_config(dev, PCI_CLASS_PROG, 3); - const char *name; - - name = pci_find_device_name((ccode >> 16) & 0xff, (ccode >> 8) & 0xff, - ccode & 0xff); - - if (func != 0) { - return g_strdup_printf("%s@%x,%x", name, slot, func); - } else { - return g_strdup_printf("%s@%x", name, slot); - } -} - static uint32_t spapr_phb_get_pci_drc_index(SpaprPhbState *phb, PCIDevice *pdev); @@ -1300,11 +1283,6 @@ static void spapr_populate_pci_child_dt(PCIDevice *dev, void *fdt, int offset, _FDT(fdt_setprop(fdt, offset, "udf-supported", NULL, 0)); } - _FDT(fdt_setprop_string(fdt, offset, "name", - pci_find_device_name((ccode >> 16) & 0xff, - (ccode >> 8) & 0xff, - ccode & 0xff))); - buf = spapr_phb_get_loc_code(sphb, dev); _FDT(fdt_setprop_string(fdt, offset, "ibm,loc-code", buf)); g_free(buf); @@ -1348,10 +1326,23 @@ static int spapr_create_pci_child_dt(SpaprPhbState *phb, PCIDevice *dev, void *fdt, int node_offset) { int offset; - gchar *nodename; + const gchar *basename; + char *nodename; + int slot = PCI_SLOT(dev->devfn); + int func = PCI_FUNC(dev->devfn); + uint32_t ccode = pci_default_read_config(dev, PCI_CLASS_PROG, 3); + + basename = dt_name_from_class((ccode >> 16) & 0xff, (ccode >> 8) & 0xff, + ccode & 0xff); + + if (func != 0) { + nodename = g_strdup_printf("%s@%x,%x", basename, slot, func); + } else { + nodename = g_strdup_printf("%s@%x", basename, slot); + } - nodename = pci_get_node_name(dev); _FDT(offset = fdt_add_subnode(fdt, node_offset, nodename)); + g_free(nodename); spapr_populate_pci_child_dt(dev, fdt, offset, phb);