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[14.202.190.183]) by smtp.gmail.com with ESMTPSA id 93sm4609599pjo.43.2020.03.25.07.42.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 25 Mar 2020 07:42:43 -0700 (PDT) From: Nicholas Piggin To: qemu-ppc@nongnu.org Subject: [PATCH 2/5] ppc/pnv: Add support for NMI interface Date: Thu, 26 Mar 2020 00:41:44 +1000 Message-Id: <20200325144147.221875-3-npiggin@gmail.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20200325144147.221875-1-npiggin@gmail.com> References: <20200325144147.221875-1-npiggin@gmail.com> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::442 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: Alexey Kardashevskiy , Mahesh Salgaonkar , qemu-devel@nongnu.org, Nicholas Piggin , Greg Kurz , =?utf-8?b?Q8OpZHJp?= =?utf-8?q?c_Le_Goater?= , Ganesh Goudar , David Gibson Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This implements the NMI interface for the PNV machine, similarly to commit 3431648272d ("spapr: Add support for new NMI interface") for SPAPR. Signed-off-by: Nicholas Piggin Reviewed-by: Cédric Le Goater --- hw/ppc/pnv.c | 30 +++++++++++++++++++++++++++++- 1 file changed, 29 insertions(+), 1 deletion(-) diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c index b75ad06390..671535ebe6 100644 --- a/hw/ppc/pnv.c +++ b/hw/ppc/pnv.c @@ -27,6 +27,7 @@ #include "sysemu/runstate.h" #include "sysemu/cpus.h" #include "sysemu/device_tree.h" +#include "sysemu/hw_accel.h" #include "target/ppc/cpu.h" #include "qemu/log.h" #include "hw/ppc/fdt.h" @@ -34,6 +35,7 @@ #include "hw/ppc/pnv.h" #include "hw/ppc/pnv_core.h" #include "hw/loader.h" +#include "hw/nmi.h" #include "exec/address-spaces.h" #include "qapi/visitor.h" #include "monitor/monitor.h" @@ -1955,10 +1957,35 @@ static void pnv_machine_set_hb(Object *obj, bool value, Error **errp) } } +static void pnv_cpu_do_nmi_on_cpu(CPUState *cs, run_on_cpu_data arg) +{ + PowerPCCPU *cpu = POWERPC_CPU(cs); + CPUPPCState *env = &cpu->env; + + cpu_synchronize_state(cs); + ppc_cpu_do_system_reset(cs); + /* + * SRR1[42:45] is set to 0100 which the ISA defines as implementation + * dependent. POWER processors use this for xscom triggered interrupts, + * which come from the BMC or NMI IPIs. + */ + env->spr[SPR_SRR1] |= PPC_BIT(43); +} + +static void pnv_nmi(NMIState *n, int cpu_index, Error **errp) +{ + CPUState *cs; + + CPU_FOREACH(cs) { + async_run_on_cpu(cs, pnv_cpu_do_nmi_on_cpu, RUN_ON_CPU_NULL); + } +} + static void pnv_machine_class_init(ObjectClass *oc, void *data) { MachineClass *mc = MACHINE_CLASS(oc); InterruptStatsProviderClass *ispc = INTERRUPT_STATS_PROVIDER_CLASS(oc); + NMIClass *nc = NMI_CLASS(oc); mc->desc = "IBM PowerNV (Non-Virtualized)"; mc->init = pnv_init; @@ -1975,6 +2002,7 @@ static void pnv_machine_class_init(ObjectClass *oc, void *data) mc->default_ram_size = INITRD_LOAD_ADDR + INITRD_MAX_SIZE; mc->default_ram_id = "pnv.ram"; ispc->print_info = pnv_pic_print_info; + nc->nmi_monitor_handler = pnv_nmi; object_class_property_add_bool(oc, "hb-mode", pnv_machine_get_hb, pnv_machine_set_hb, @@ -2038,7 +2066,7 @@ static const TypeInfo types[] = { .class_size = sizeof(PnvMachineClass), .interfaces = (InterfaceInfo[]) { { TYPE_INTERRUPT_STATS_PROVIDER }, - { }, + { TYPE_NMI }, }, }, {