From patchwork Thu Jul 11 14:18:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicholas Piggin X-Patchwork-Id: 13730773 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 2FE2CC3DA45 for ; Thu, 11 Jul 2024 14:21:19 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sRueP-0006Tf-8c; Thu, 11 Jul 2024 10:20:01 -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 1sRueM-000677-4t; Thu, 11 Jul 2024 10:19:58 -0400 Received: from mail-pf1-x436.google.com ([2607:f8b0:4864:20::436]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sRueK-0005Xo-I2; Thu, 11 Jul 2024 10:19:57 -0400 Received: by mail-pf1-x436.google.com with SMTP id d2e1a72fcca58-70b31272a04so1355853b3a.1; Thu, 11 Jul 2024 07:19:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1720707594; x=1721312394; 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=B8fUUkofZlD0VQNVjPS4pmLNGcMZ/HOLexvY/fa0/IU=; b=LKmTmznksy72O/hiFVf/lqIqR7eh7fQMqMKyun5wTz/g5jo/xyesooi1olos6I59qF O6Qm/6bGxM4l8e9rCO5swCIGWdKt1TtdTRrqj+AQyomqcTMba0+lRaZleSAeDFsQL0En 1GoQzdjyobT1BKZDadmSJb6D4ZgQ4GPAvuT4307RvndCBvxkd6rAWPTDiQuNRAo1gX7M 8Fsi68toGT2KzqLttNnVEpy7PovQcoXffhSMj3rcJjv6DEKVotcVr7+CbKslWil4Olfv Q9dKjNxOYE++AZUXWB7uufjGf1Vw3cfuqzQe9m0zoFvMcmlkmFCiLNsugG6PH8UJs3du C26w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720707594; x=1721312394; 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=B8fUUkofZlD0VQNVjPS4pmLNGcMZ/HOLexvY/fa0/IU=; b=DNLpPiXbpE+Ea7kz6xU80mNG46LWuWWKZbDmCH9Y+1Ey7uW1JxTC1tXEENNvna9G4u OI5e7EPMRvCD/b7Tzr14q3mqdK2ECeSChGMTn4uPlCzZXZf86VaNOqMjIjOjA3HihP5C oHVSMUpkQVtOnCWhc3LsJ+02z5x/HCszXNEBryDeWE5BF0d7hALFAwIRsUte6nop152N 77gNSyTy8UH+16JOc6eLdXfHXGfegD1moVqwxYxVd8uDjEyQW6lSg2WA+NSwv5zkZKQ9 DLAHRt0pq8xvfpRRfs4wyxmkwb8OL3ea67vLY08Da0AZYLEdUyPq5317CtxIa41GGMjp 7iRA== X-Forwarded-Encrypted: i=1; AJvYcCX0KqfS19KEwXreni7uic9fLEgh2OWY/aOA0LQ8d4swSOCVjm0QqxtSWD2+lQQWYwZIyKqenEBIVKrWGY9A7/zdnVRzrQI= X-Gm-Message-State: AOJu0YwHZNJY62VQ/CfM2HLt6Ho9o3u9kyjqJLA2Vhcl+dZ5CxsR9H6P sLa7+fGDxv1sf9oPFE3B5qLHZNvfHd5XNsX8iaROra9KYztwcReBkbqSd9aJ X-Google-Smtp-Source: AGHT+IFE483TGpRXNwj0rVPfaqgNEyV6O36xfDI/oU/2vV31yYGOP8wkvz0bhyxyTl+WtWP3mav8lA== X-Received: by 2002:a05:6a20:72a1:b0:1c0:e619:bdb2 with SMTP id adf61e73a8af0-1c3b78070b9mr2814309637.14.1720707594443; Thu, 11 Jul 2024 07:19:54 -0700 (PDT) Received: from wheely.local0.net ([203.220.44.216]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-70b54ec730fsm3308904b3a.173.2024.07.11.07.19.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Jul 2024 07:19:54 -0700 (PDT) From: Nicholas Piggin To: qemu-ppc@nongnu.org Cc: Nicholas Piggin , =?utf-8?q?C=C3=A9dric_Le_Goater?= , =?utf-8?b?RnLDqWTDqXJp?= =?utf-8?b?YyBCYXJyYXQ=?= , Harsh Prateek Bora , qemu-devel@nongnu.org Subject: [PATCH 14/18] ppc/pnv: Implement Power9 CPU core thread state indirect register Date: Fri, 12 Jul 2024 00:18:46 +1000 Message-ID: <20240711141851.406677-15-npiggin@gmail.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240711141851.406677-1-npiggin@gmail.com> References: <20240711141851.406677-1-npiggin@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::436; envelope-from=npiggin@gmail.com; helo=mail-pf1-x436.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. 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 2032f3f7c1..aa255233b4 100644 --- a/target/ppc/misc_helper.c +++ b/target/ppc/misc_helper.c @@ -319,6 +319,23 @@ 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);