From patchwork Fri Feb 9 15:17:33 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 871507 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3zdMyV3zWfz9s7M for ; Sat, 10 Feb 2018 04:49:38 +1100 (AEDT) Received: from localhost ([::1]:49670 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ekCno-0001wP-Jj for incoming@patchwork.ozlabs.org; Fri, 09 Feb 2018 12:49:36 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48370) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ekAyP-0001XS-8Z for qemu-devel@nongnu.org; Fri, 09 Feb 2018 10:52:26 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ekAyM-0007he-5X for qemu-devel@nongnu.org; Fri, 09 Feb 2018 10:52:25 -0500 Received: from newton.telenet-ops.be ([195.130.132.45]:48752) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ekAyL-0007gw-U1 for qemu-devel@nongnu.org; Fri, 09 Feb 2018 10:52:22 -0500 Received: from laurent.telenet-ops.be (laurent.telenet-ops.be [IPv6:2a02:1800:110:4::f00:19]) by newton.telenet-ops.be (Postfix) with ESMTPS id 3zdJwl22mVzMqw1W for ; Fri, 9 Feb 2018 16:32:55 +0100 (CET) Received: from ayla.of.borg ([84.194.111.163]) by laurent.telenet-ops.be with bizsmtp id 8fHm1x02Y3XaVaC01fHmCl; Fri, 09 Feb 2018 16:17:50 +0100 Received: from ramsan.of.borg ([192.168.97.29] helo=ramsan) by ayla.of.borg with esmtp (Exim 4.86_2) (envelope-from ) id 1ekAQs-0003Rz-OW; Fri, 09 Feb 2018 16:17:46 +0100 Received: from geert by ramsan with local (Exim 4.86_2) (envelope-from ) id 1ekAQs-0000lK-Mj; Fri, 09 Feb 2018 16:17:46 +0100 From: Geert Uytterhoeven To: Peter Maydell , Alex Williamson Date: Fri, 9 Feb 2018 16:17:33 +0100 Message-Id: <1518189456-2873-3-git-send-email-geert+renesas@glider.be> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1518189456-2873-1-git-send-email-geert+renesas@glider.be> References: <1518189456-2873-1-git-send-email-geert+renesas@glider.be> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 195.130.132.45 X-Mailman-Approved-At: Fri, 09 Feb 2018 12:38:16 -0500 Subject: [Qemu-devel] [PATCH/RFC 2/5] hw/arm/sysbus-fdt: Allow device matching with compat string 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: Geert Uytterhoeven , Arnd Bergmann , Wolfram Sang , Magnus Damm , Alexander Graf , qemu-devel@nongnu.org, linux-renesas-soc@vger.kernel.org, Auger Eric , qemu-arm@nongnu.org, Laurent Pinchart , Xiao Feng Ren Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Auger Eric Up to now we have relied on the device type to identify a device tree node creation function. Since we would like the VFIO-PLATFORM device to be instantiable with different compatibility strings we introduce the capability to specialize the node creation depending on a manufacturer/model combo. NodeCreationPair is renamed into BindingEntry. The struct is enhanced with manufacturer, model and match_fn() fields. We introduce a new matching function adapted to vfio-platform generic device. From now on, the AMD XGBE can be instantiated with either manner, ie: -device vfio-amd-xgbe,host=e0900000.xgmac or new option line: -device vfio-platform,host=e0900000.xgmac,manufacturer=amd,model=xgbe-seattle-v1a Signed-off-by: Eric Auger Signed-off-by: Geert Uytterhoeven --- hw/arm/sysbus-fdt.c | 61 +++++++++++++++++++++++++++++++++++++++++------------ 1 file changed, 48 insertions(+), 13 deletions(-) diff --git a/hw/arm/sysbus-fdt.c b/hw/arm/sysbus-fdt.c index d68e3dcdbd260895..c5d4fd5604c28118 100644 --- a/hw/arm/sysbus-fdt.c +++ b/hw/arm/sysbus-fdt.c @@ -58,11 +58,14 @@ typedef struct PlatformBusFDTNotifierParams { ARMPlatformBusFDTParams *fdt_params; } PlatformBusFDTNotifierParams; -/* struct that associates a device type name and a node creation function */ -typedef struct NodeCreationPair { +/* struct that allows to match a device and create its FDT node */ +typedef struct BindingEntry { const char *typename; - int (*add_fdt_node_fn)(SysBusDevice *sbdev, void *opaque); -} NodeCreationPair; + const char *manufacturer; + const char *model; + int (*add_fn)(SysBusDevice *sbdev, void *opaque); + bool (*match_fn)(SysBusDevice *sbdev, const struct BindingEntry *combo); +} BindingEntry; /* helpers */ @@ -413,15 +416,46 @@ static int add_amd_xgbe_fdt_node(SysBusDevice *sbdev, void *opaque) return 0; } +/* manufacturer/model matching */ +static bool vfio_platform_match(SysBusDevice *sbdev, + const BindingEntry *entry) +{ + VFIOPlatformDevice *vdev = VFIO_PLATFORM_DEVICE(sbdev); + + if (strcmp(entry->model, vdev->model)) { + return false; + } + + if (entry->manufacturer) { + if (!vdev->manufacturer) { + return false; + } + return !strcmp(entry->manufacturer, vdev->manufacturer); + } + return true; +} + +#define VFIO_PLATFORM_BINDING(manuf, model, add_fn) \ + {TYPE_VFIO_PLATFORM, (manuf), (model), (add_fn), vfio_platform_match} + #endif /* CONFIG_LINUX */ -/* list of supported dynamic sysbus devices */ -static const NodeCreationPair add_fdt_node_functions[] = { +/* Device type based matching */ +static bool type_match(SysBusDevice *sbdev, const BindingEntry *entry) +{ + return !strcmp(object_get_typename(OBJECT(sbdev)), entry->typename); +} + +#define TYPE_BINDING(type, add_fn) {(type), NULL, NULL, (add_fn), type_match} + +/* list of supported dynamic sysbus bindings */ +static const BindingEntry bindings[] = { #ifdef CONFIG_LINUX - {TYPE_VFIO_CALXEDA_XGMAC, add_calxeda_midway_xgmac_fdt_node}, - {TYPE_VFIO_AMD_XGBE, add_amd_xgbe_fdt_node}, + TYPE_BINDING(TYPE_VFIO_CALXEDA_XGMAC, add_calxeda_midway_xgmac_fdt_node), + TYPE_BINDING(TYPE_VFIO_AMD_XGBE, add_amd_xgbe_fdt_node), + VFIO_PLATFORM_BINDING("amd", "xgbe-seattle-v1a", add_amd_xgbe_fdt_node), #endif - {"", NULL}, /* last element */ + TYPE_BINDING("", NULL), /* last element */ }; /* Generic Code */ @@ -440,10 +474,11 @@ static void add_fdt_node(SysBusDevice *sbdev, void *opaque) { int i, ret; - for (i = 0; i < ARRAY_SIZE(add_fdt_node_functions); i++) { - if (!strcmp(object_get_typename(OBJECT(sbdev)), - add_fdt_node_functions[i].typename)) { - ret = add_fdt_node_functions[i].add_fdt_node_fn(sbdev, opaque); + for (i = 0; i < ARRAY_SIZE(bindings); i++) { + const BindingEntry *iter = &bindings[i]; + + if (iter->match_fn(sbdev, iter)) { + ret = iter->add_fn(sbdev, opaque); assert(!ret); return; }