From patchwork Tue Dec 17 04:42:20 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: David Gibson X-Patchwork-Id: 1210985 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=gibson.dropbear.id.au Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=gibson.dropbear.id.au header.i=@gibson.dropbear.id.au header.b="B1zEpCub"; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47cQrw69VPz9sRX for ; Tue, 17 Dec 2019 15:58:40 +1100 (AEDT) Received: from localhost ([::1]:35282 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ih4wP-0002YP-5k for incoming@patchwork.ozlabs.org; Mon, 16 Dec 2019 23:58:37 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:33707) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ih4iG-0008JN-5H for qemu-devel@nongnu.org; Mon, 16 Dec 2019 23:44:02 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ih4iB-0005ZZ-Q9 for qemu-devel@nongnu.org; Mon, 16 Dec 2019 23:43:58 -0500 Received: from bilbo.ozlabs.org ([2401:3900:2:1::2]:53459 helo=ozlabs.org) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ih4iA-0005QK-Db; Mon, 16 Dec 2019 23:43:55 -0500 Received: by ozlabs.org (Postfix, from userid 1007) id 47cQWS6T4rz9sSh; Tue, 17 Dec 2019 15:43:31 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gibson.dropbear.id.au; s=201602; t=1576557812; bh=yLXzg2VI1CzpHWdUBG1skoOw2fJbrqhcfdSr1eU4hcQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=B1zEpCub7ulfeeT6pmVNmUaTmFkP8/2WSFJtMIQj6ALIwwwV2ZRwNmn960P9BFR/t gROm2KPA5E/JjgaW9bB6POqsIXTQOgdlc2mICVmbWnLfu+rGAXW1U4nEXM7vkGQ5+l 3jhNh1co4cIxHI915/JO8/AThoIU+PlM/nAM4lOA= From: David Gibson To: peter.maydell@linaro.org Subject: [PULL 26/88] ppc/pnv: Create BMC devices at machine init Date: Tue, 17 Dec 2019 15:42:20 +1100 Message-Id: <20191217044322.351838-27-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191217044322.351838-1-david@gibson.dropbear.id.au> References: <20191217044322.351838-1-david@gibson.dropbear.id.au> 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 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lvivier@redhat.com, aik@ozlabs.ru, qemu-devel@nongnu.org, groug@kaod.org, qemu-ppc@nongnu.org, clg@kaod.org, David Gibson Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Cédric Le Goater The BMC of the OpenPOWER systems monitors the machine state using sensors, controls the power and controls the access to the PNOR flash device containing the firmware image required to boot the host. QEMU models the power cycle process, access to the sensors and access to the PNOR device. But, for these features to be available, the QEMU PowerNV machine needs two extras devices on the command line, an IPMI BT device for communication and a BMC backend device: -device ipmi-bmc-sim,id=bmc0 -device isa-ipmi-bt,bmc=bmc0,irq=10 The BMC properties are then defined accordingly in the device tree and OPAL self adapts. If a BMC device and an IPMI BT device are not available, OPAL does not try to communicate with the BMC in any manner. This is not how real systems behave. To be closer to the default behavior, create an IPMI BMC simulator device and an IPMI BT device at machine initialization time. We loose the ability to define an external BMC device but there are benefits: - a better match with real systems, - a better test coverage of the OPAL code, - system powerdown and reset commands that work, - a QEMU device tree compliant with the specifications (*). (*) Still needs a MBOX device. Signed-off-by: Cédric Le Goater Message-Id: <20191121162340.11049-1-clg@kaod.org> Signed-off-by: David Gibson --- hw/ppc/pnv.c | 33 ++++++++++++++++----------------- hw/ppc/pnv_bmc.c | 20 +++++++++++++++++--- include/hw/ppc/pnv.h | 2 +- 3 files changed, 34 insertions(+), 21 deletions(-) diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c index c3ac0d6d5b..f0adb06c8d 100644 --- a/hw/ppc/pnv.c +++ b/hw/ppc/pnv.c @@ -551,27 +551,10 @@ static void pnv_powerdown_notify(Notifier *n, void *opaque) static void pnv_reset(MachineState *machine) { - PnvMachineState *pnv = PNV_MACHINE(machine); void *fdt; - Object *obj; qemu_devices_reset(); - /* - * OpenPOWER systems have a BMC, which can be defined on the - * command line with: - * - * -device ipmi-bmc-sim,id=bmc0 - * - * This is the internal simulator but it could also be an external - * BMC. - */ - obj = object_resolve_path_type("", "ipmi-bmc-sim", NULL); - if (obj) { - pnv->bmc = IPMI_BMC(obj); - pnv_bmc_hiomap(pnv->bmc); - } - fdt = pnv_dt_create(machine); /* Pack resulting tree */ @@ -629,6 +612,16 @@ static bool pnv_match_cpu(const char *default_type, const char *cpu_type) return ppc_default->pvr_match(ppc_default, ppc->pvr); } +static void pnv_ipmi_bt_init(ISABus *bus, IPMIBmc *bmc, uint32_t irq) +{ + Object *obj; + + obj = OBJECT(isa_create(bus, "isa-ipmi-bt")); + object_property_set_link(obj, OBJECT(bmc), "bmc", &error_fatal); + object_property_set_int(obj, irq, "irq", &error_fatal); + object_property_set_bool(obj, true, "realized", &error_fatal); +} + static void pnv_init(MachineState *machine) { PnvMachineState *pnv = PNV_MACHINE(machine); @@ -751,6 +744,9 @@ static void pnv_init(MachineState *machine) } g_free(chip_typename); + /* Create the machine BMC simulator */ + pnv->bmc = pnv_bmc_create(); + /* Instantiate ISA bus on chip 0 */ pnv->isa_bus = pnv_isa_create(pnv->chips[0], &error_fatal); @@ -760,6 +756,9 @@ static void pnv_init(MachineState *machine) /* Create an RTC ISA device too */ mc146818_rtc_init(pnv->isa_bus, 2000, NULL); + /* Create the IPMI BT device for communication with the BMC */ + pnv_ipmi_bt_init(pnv->isa_bus, pnv->bmc, 10); + /* * OpenPOWER systems use a IPMI SEL Event message to notify the * host to powerdown diff --git a/hw/ppc/pnv_bmc.c b/hw/ppc/pnv_bmc.c index aa5c89586c..07fa1e1c7e 100644 --- a/hw/ppc/pnv_bmc.c +++ b/hw/ppc/pnv_bmc.c @@ -17,6 +17,8 @@ */ #include "qemu/osdep.h" +#include "qemu-common.h" +#include "qapi/error.h" #include "target/ppc/cpu.h" #include "qemu/log.h" #include "hw/ipmi/ipmi.h" @@ -211,8 +213,20 @@ static const IPMINetfn hiomap_netfn = { .cmd_handlers = hiomap_cmds }; -int pnv_bmc_hiomap(IPMIBmc *bmc) +/* + * Instantiate the machine BMC. PowerNV uses the QEMU internal + * simulator but it could also be external. + */ +IPMIBmc *pnv_bmc_create(void) { - return ipmi_sim_register_netfn(IPMI_BMC_SIMULATOR(bmc), - IPMI_NETFN_OEM, &hiomap_netfn); + Object *obj; + + obj = object_new(TYPE_IPMI_BMC_SIMULATOR); + object_property_set_bool(obj, true, "realized", &error_fatal); + + /* Install the HIOMAP protocol handlers to access the PNOR */ + ipmi_sim_register_netfn(IPMI_BMC_SIMULATOR(obj), IPMI_NETFN_OEM, + &hiomap_netfn); + + return IPMI_BMC(obj); } diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h index 07c56c05ad..90f1343ed0 100644 --- a/include/hw/ppc/pnv.h +++ b/include/hw/ppc/pnv.h @@ -198,7 +198,7 @@ static inline bool pnv_is_power9(PnvMachineState *pnv) */ void pnv_dt_bmc_sensors(IPMIBmc *bmc, void *fdt); void pnv_bmc_powerdown(IPMIBmc *bmc); -int pnv_bmc_hiomap(IPMIBmc *bmc); +IPMIBmc *pnv_bmc_create(void); /* * POWER8 MMIO base addresses