From patchwork Thu Jul 25 23:53:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Nicholas Piggin X-Patchwork-Id: 13742271 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 8D59BC49EA1 for ; Fri, 26 Jul 2024 00:00:16 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sX8Jk-0003iy-St; Thu, 25 Jul 2024 19:56:16 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sX8Jj-0003Y5-9x; Thu, 25 Jul 2024 19:56:15 -0400 Received: from mail-pf1-x42e.google.com ([2607:f8b0:4864:20::42e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sX8Jh-00014Z-DY; Thu, 25 Jul 2024 19:56:15 -0400 Received: by mail-pf1-x42e.google.com with SMTP id d2e1a72fcca58-70d2b921c48so393563b3a.1; Thu, 25 Jul 2024 16:56:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1721951771; x=1722556571; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=FRU5mXFW75+0u2krwZSICCQjsBiOHONwJX33wBY+3tw=; b=d1g0mwIxFXTcOIUUk7IoA5XUmTAC2G4WNX6cZIiwTClKBeN5NJpS38BKVuaGfDpOkx O3HLTLU8/TrTMYcDp7hY6L7OdkJMemgs9RJa2zgOCZAxs+tESV9h7XB7JWdmp/CJvuXB 8NRXmOjUEkCMCfXOARFPZYgMIfS8oe+b+q/zJgFQf/oswRi4vpeJIPEpSOK0eqFRaeQZ qxrXQc6BHohmhLMV8fe3lde61Ij9lOXBhqwWsMjZoOaVxMeETQpQQi6WpaGmGNExNUJn 3h6tI8Ge66+wZfbiwFrQoH2QxwN8r6vZYAFcslBWnX4h62/5BCqW07uL/lL9XBa72S+p 9M/w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1721951771; x=1722556571; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=FRU5mXFW75+0u2krwZSICCQjsBiOHONwJX33wBY+3tw=; b=Lc/62JU+adlL57wJM9mkbmEvTftfLSpc93v34gHfIIqU273zESq8NET/JbHOe4s/lq dKAsuvoM2gqNeOCiuh3ZgM9xmUTDL+GGv/ZRav5jyrjkYdm6crMOUh+P4QGyBdG/jQ+P L4MAalmpyxZCdG5fLssePMiwNQ3sAfp8aXBEUWUswuREDJb+HL81bG/NXT8y7BDrr+r5 OET2f5U5nmcn9QGEqA3918PeL1MbGlzbIUOTqGReXQKga/Q5HH8iIC9bAyK2cwuWoI6S 39p5gk2Y68JVc+v6bJFI1vgjH6ejdCGe7Itq9NnBc21bCqUU+DgMQ6kkL4gTxkn13QFB bgPg== X-Forwarded-Encrypted: i=1; AJvYcCWJNqtwIqVTWOPWFHcwoqohKxDOOlJd5GTwi9h2gDMLrQh1M0jn34buriFGRzGeskIsK2Wzc7WU58MGdwqqewzY/Kyb X-Gm-Message-State: AOJu0Yx6nMuoEnkOIkWeKzQ3hIhbP9ED4gICRk+ebDMM53w0viwIavlI aZk7rtPYoadI0KKnQgKsnwOi++HwgJ5MIj+k9ZeotbMKcVQCmUwVG9Svfg== X-Google-Smtp-Source: AGHT+IHV5ekeAEkL4HiU3q/R2LGpGjhjZ4D617fwj8m6pfPYdgCf0CuWxGdkynS0OJMaB6X/CYQZOg== X-Received: by 2002:a05:6a21:6711:b0:1c0:f5ea:d447 with SMTP id adf61e73a8af0-1c472880cdamr5152586637.31.1721951771290; Thu, 25 Jul 2024 16:56:11 -0700 (PDT) Received: from wheely.local0.net ([203.220.44.216]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2cf28c7fef3sm2142060a91.16.2024.07.25.16.56.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 25 Jul 2024 16:56:10 -0700 (PDT) From: Nicholas Piggin To: qemu-devel@nongnu.org Cc: Nicholas Piggin , qemu-ppc@nongnu.org, =?utf-8?q?C?= =?utf-8?q?=C3=A9dric_Le_Goater?= Subject: [PULL 30/96] ppc/pnv: Implement Power9 CPU core thread state indirect register Date: Fri, 26 Jul 2024 09:53:03 +1000 Message-ID: <20240725235410.451624-31-npiggin@gmail.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240725235410.451624-1-npiggin@gmail.com> References: <20240725235410.451624-1-npiggin@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::42e; envelope-from=npiggin@gmail.com; helo=mail-pf1-x42e.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Power9 CPUs have a core thread state register accessible via SPRC/SPRD indirect registers. This register includes a bit for big-core mode, which skiboot requires. Reviewed-by: Cédric Le Goater Signed-off-by: Nicholas Piggin --- target/ppc/misc_helper.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/target/ppc/misc_helper.c b/target/ppc/misc_helper.c index 9789d69664..1b83971375 100644 --- a/target/ppc/misc_helper.c +++ b/target/ppc/misc_helper.c @@ -325,6 +325,23 @@ target_ulong helper_load_sprd(CPUPPCState *env) case 0: /* SCRATCH0-3 */ case 1: /* SCRATCH4-7 */ return pc->scratch[(sprc >> 3) & 0x7]; + + case 0x1e0: /* core thread state */ + if (env->excp_model == POWERPC_EXCP_POWER9) { + /* + * Only implement for POWER9 because skiboot uses it to check + * big-core mode. Other bits are unimplemented so we would + * prefer to get unimplemented message on POWER10 if it were + * used anywhere. + */ + if (pc->big_core) { + return PPC_BIT(63); + } else { + return 0; + } + } + /* fallthru */ + default: qemu_log_mask(LOG_UNIMP, "mfSPRD: Unimplemented SPRC:0x" TARGET_FMT_lx"\n", sprc);