From aeaef83dabfec1c1666e65a0c5375983c7a23089 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Date: Tue, 11 Apr 2017 17:30:05 +0200 Subject: [PATCH] ppc/pnv: add initial IPMI sensors for the BMC simulator MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Skiboot, the firmware for the PowerNV platform, expects the BMC to provide some specific IPMI sensors. These sensors are exposed in the device tree and their values are updated by the firmware at boot time. Sensors of interest are : "FW Boot Progress" "Boot Count" As such a device is defined on the command line, we can only detect its presence at reset time. Signed-off-by: Cédric Le Goater Reviewed-by: David Gibson Signed-off-by: David Gibson --- hw/ppc/Makefile.objs | 2 +- hw/ppc/pnv.c | 21 ++++++++++++ hw/ppc/pnv_bmc.c | 81 ++++++++++++++++++++++++++++++++++++++++++++ include/hw/ppc/pnv.h | 9 +++++ 4 files changed, 112 insertions(+), 1 deletion(-) create mode 100644 hw/ppc/pnv_bmc.c diff --git a/hw/ppc/Makefile.objs b/hw/ppc/Makefile.objs index ef67ea8201..7efc686748 100644 --- a/hw/ppc/Makefile.objs +++ b/hw/ppc/Makefile.objs @@ -6,7 +6,7 @@ obj-$(CONFIG_PSERIES) += spapr_hcall.o spapr_iommu.o spapr_rtas.o obj-$(CONFIG_PSERIES) += spapr_pci.o spapr_rtc.o spapr_drc.o spapr_rng.o obj-$(CONFIG_PSERIES) += spapr_cpu_core.o spapr_ovec.o # IBM PowerNV -obj-$(CONFIG_POWERNV) += pnv.o pnv_xscom.o pnv_core.o pnv_lpc.o pnv_psi.o pnv_occ.o +obj-$(CONFIG_POWERNV) += pnv.o pnv_xscom.o pnv_core.o pnv_lpc.o pnv_psi.o pnv_occ.o pnv_bmc.o ifeq ($(CONFIG_PCI)$(CONFIG_PSERIES)$(CONFIG_LINUX), yyy) obj-y += spapr_pci_vfio.o endif diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c index 977e126aca..685eb122d2 100644 --- a/hw/ppc/pnv.c +++ b/hw/ppc/pnv.c @@ -35,6 +35,7 @@ #include "qapi/visitor.h" #include "monitor/monitor.h" #include "hw/intc/intc.h" +#include "hw/ipmi/ipmi.h" #include "hw/ppc/xics.h" #include "hw/ppc/pnv_xscom.h" @@ -476,16 +477,36 @@ static void *powernv_create_fdt(MachineState *machine) /* Populate ISA devices on chip 0 */ lpc_offset = pnv_chip_lpc_offset(pnv->chips[0], fdt); powernv_populate_isa(pnv->isa_bus, fdt, lpc_offset); + + if (pnv->bmc) { + pnv_bmc_populate_sensors(pnv->bmc, fdt); + } + return fdt; } static void ppc_powernv_reset(void) { MachineState *machine = MACHINE(qdev_get_machine()); + PnvMachineState *pnv = POWERNV_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("", TYPE_IPMI_BMC, NULL); + if (obj) { + pnv->bmc = IPMI_BMC(obj); + } + fdt = powernv_create_fdt(machine); /* Pack resulting tree */ diff --git a/hw/ppc/pnv_bmc.c b/hw/ppc/pnv_bmc.c new file mode 100644 index 0000000000..a0820dca55 --- /dev/null +++ b/hw/ppc/pnv_bmc.c @@ -0,0 +1,81 @@ +/* + * QEMU PowerNV, BMC related functions + * + * Copyright (c) 2016-2017, IBM Corporation. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License, version 2, as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see . + */ + +#include "qemu/osdep.h" +#include "hw/hw.h" +#include "sysemu/sysemu.h" +#include "target/ppc/cpu.h" +#include "qapi/error.h" +#include "qemu/log.h" +#include "hw/ipmi/ipmi.h" +#include "hw/ppc/fdt.h" + +#include "hw/ppc/pnv.h" + +#include + +/* TODO: include definition in ipmi.h */ +#define IPMI_SDR_FULL_TYPE 1 + +void pnv_bmc_populate_sensors(IPMIBmc *bmc, void *fdt) +{ + int offset; + int i; + const struct ipmi_sdr_compact *sdr; + uint16_t nextrec; + + offset = fdt_add_subnode(fdt, 0, "/bmc"); + _FDT(offset); + + _FDT((fdt_setprop_string(fdt, offset, "name", "bmc"))); + _FDT((fdt_setprop_cell(fdt, offset, "#address-cells", 0x1))); + _FDT((fdt_setprop_cell(fdt, offset, "#size-cells", 0x0))); + + offset = fdt_add_subnode(fdt, offset, "sensors"); + _FDT(offset); + + _FDT((fdt_setprop_cell(fdt, offset, "#address-cells", 0x1))); + _FDT((fdt_setprop_cell(fdt, offset, "#size-cells", 0x0))); + + for (i = 0; !ipmi_bmc_sdr_find(bmc, i, &sdr, &nextrec); i++) { + int off; + char *name; + + if (sdr->header.rec_type != IPMI_SDR_COMPACT_TYPE && + sdr->header.rec_type != IPMI_SDR_FULL_TYPE) { + continue; + } + + name = g_strdup_printf("sensor@%x", sdr->sensor_owner_number); + off = fdt_add_subnode(fdt, offset, name); + _FDT(off); + g_free(name); + + _FDT((fdt_setprop_cell(fdt, off, "reg", sdr->sensor_owner_number))); + _FDT((fdt_setprop_string(fdt, off, "name", "sensor"))); + _FDT((fdt_setprop_string(fdt, off, "compatible", "ibm,ipmi-sensor"))); + _FDT((fdt_setprop_cell(fdt, off, "ipmi-sensor-reading-type", + sdr->reading_type))); + _FDT((fdt_setprop_cell(fdt, off, "ipmi-entity-id", + sdr->entity_id))); + _FDT((fdt_setprop_cell(fdt, off, "ipmi-entity-instance", + sdr->entity_instance))); + _FDT((fdt_setprop_cell(fdt, off, "ipmi-sensor-type", + sdr->sensor_type))); + } +} diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h index b45a0d91c8..02f6cf565c 100644 --- a/include/hw/ppc/pnv.h +++ b/include/hw/ppc/pnv.h @@ -118,6 +118,8 @@ typedef struct PnvChipClass { #define POWERNV_MACHINE(obj) \ OBJECT_CHECK(PnvMachineState, (obj), TYPE_POWERNV_MACHINE) +typedef struct IPMIBmc IPMIBmc; + typedef struct PnvMachineState { /*< private >*/ MachineState parent_obj; @@ -130,11 +132,18 @@ typedef struct PnvMachineState { ISABus *isa_bus; uint32_t cpld_irqstate; + + IPMIBmc *bmc; } PnvMachineState; #define PNV_FDT_ADDR 0x01000000 #define PNV_TIMEBASE_FREQ 512000000ULL +/* + * BMC helpers + */ +void pnv_bmc_populate_sensors(IPMIBmc *bmc, void *fdt); + /* * POWER8 MMIO base addresses */ -- GitLab