From mboxrd@z Thu Jan 1 00:00:00 1970 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 432F2C83F25 for ; Mon, 21 Jul 2025 16:28:38 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1udtJt-00087C-LK; Mon, 21 Jul 2025 12:24:54 -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 1udtIq-0004nA-M4 for qemu-devel@nongnu.org; Mon, 21 Jul 2025 12:23:52 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1udtIm-0001VW-R5 for qemu-devel@nongnu.org; Mon, 21 Jul 2025 12:23:47 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1753115012; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=zbcOZYvYxcpn7qLGoZRN868cWZlnWPR04Tvliab+iGE=; b=M/Qrnb1rHK6ySCalEApjeEquWD4QkvR/UsVfzesqp6+/wTMOlmS93+AZ3hLkhJDS5n21De dsM1B65d7HSQf9zSJxoZNE+R6Gv+majH+AKA7E08dtJYsyC6rkd3Wcv+mgzBUIgpDB7U57 DRyBUdVwSrD/w2Xl7D0+mLrW0OxoO+o= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-531-qGW7kRUuNr-n9Pdqo_mb0Q-1; Mon, 21 Jul 2025 12:23:28 -0400 X-MC-Unique: qGW7kRUuNr-n9Pdqo_mb0Q-1 X-Mimecast-MFC-AGG-ID: qGW7kRUuNr-n9Pdqo_mb0Q_1753115007 Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 3D5DF1944CC9; Mon, 21 Jul 2025 16:23:27 +0000 (UTC) Received: from corto.redhat.com (unknown [10.45.224.19]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id BD0571956050; Mon, 21 Jul 2025 16:23:24 +0000 (UTC) From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: qemu-devel@nongnu.org Cc: Nicholas Piggin , Daniel Henrique Barboza , Glenn Miles , Michael Kowal , Caleb Schlossin , Gautam Menghani , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Subject: [PULL 17/50] pnv/xive2: Support ESB Escalation Date: Mon, 21 Jul 2025 18:22:00 +0200 Message-ID: <20250721162233.686837-18-clg@redhat.com> In-Reply-To: <20250721162233.686837-1-clg@redhat.com> References: <20250721162233.686837-1-clg@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Received-SPF: pass client-ip=170.10.129.124; envelope-from=clg@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.926, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-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 From: Glenn Miles Add support for XIVE ESB Interrupt Escalation. Suggested-by: Michael Kowal [This change was taken from a patch provided by Michael Kowal.] Signed-off-by: Glenn Miles Reviewed-by: Nicholas Piggin Reviewed-by: Michael Kowal Reviewed-by: Caleb Schlossin Tested-by: Gautam Menghani Link: https://lore.kernel.org/qemu-devel/20250512031100.439842-18-npiggin@gmail.com Signed-off-by: Cédric Le Goater --- include/hw/ppc/xive2.h | 1 + include/hw/ppc/xive2_regs.h | 13 +++++--- hw/intc/xive2.c | 62 ++++++++++++++++++++++++++++++------- 3 files changed, 59 insertions(+), 17 deletions(-) diff --git a/include/hw/ppc/xive2.h b/include/hw/ppc/xive2.h index 8cdf8191742e..2436ddb5e53c 100644 --- a/include/hw/ppc/xive2.h +++ b/include/hw/ppc/xive2.h @@ -80,6 +80,7 @@ int xive2_router_write_nvgc(Xive2Router *xrtr, bool crowd, uint32_t xive2_router_get_config(Xive2Router *xrtr); void xive2_router_notify(XiveNotifier *xn, uint32_t lisn, bool pq_checked); +void xive2_notify(Xive2Router *xrtr, uint32_t lisn, bool pq_checked); /* * XIVE2 Presenter (POWER10) diff --git a/include/hw/ppc/xive2_regs.h b/include/hw/ppc/xive2_regs.h index 3c28de8a304d..2c535ec0d0f1 100644 --- a/include/hw/ppc/xive2_regs.h +++ b/include/hw/ppc/xive2_regs.h @@ -39,15 +39,18 @@ typedef struct Xive2Eas { uint64_t w; -#define EAS2_VALID PPC_BIT(0) -#define EAS2_END_BLOCK PPC_BITMASK(4, 7) /* Destination EQ block# */ -#define EAS2_END_INDEX PPC_BITMASK(8, 31) /* Destination EQ index */ -#define EAS2_MASKED PPC_BIT(32) /* Masked */ -#define EAS2_END_DATA PPC_BITMASK(33, 63) /* written to the EQ */ +#define EAS2_VALID PPC_BIT(0) +#define EAS2_QOS PPC_BIT(1, 2) /* Quality of Service(unimp) */ +#define EAS2_RESUME PPC_BIT(3) /* END Resume(unimp) */ +#define EAS2_END_BLOCK PPC_BITMASK(4, 7) /* Destination EQ block# */ +#define EAS2_END_INDEX PPC_BITMASK(8, 31) /* Destination EQ index */ +#define EAS2_MASKED PPC_BIT(32) /* Masked */ +#define EAS2_END_DATA PPC_BITMASK(33, 63) /* written to the EQ */ } Xive2Eas; #define xive2_eas_is_valid(eas) (be64_to_cpu((eas)->w) & EAS2_VALID) #define xive2_eas_is_masked(eas) (be64_to_cpu((eas)->w) & EAS2_MASKED) +#define xive2_eas_is_resume(eas) (be64_to_cpu((eas)->w) & EAS2_RESUME) void xive2_eas_pic_print_info(Xive2Eas *eas, uint32_t lisn, GString *buf); diff --git a/hw/intc/xive2.c b/hw/intc/xive2.c index cca121b5f13c..541b05225cd2 100644 --- a/hw/intc/xive2.c +++ b/hw/intc/xive2.c @@ -1552,18 +1552,39 @@ do_escalation: } } - /* - * The END trigger becomes an Escalation trigger - */ - xive2_router_end_notify(xrtr, - xive_get_field32(END2_W4_END_BLOCK, end.w4), - xive_get_field32(END2_W4_ESC_END_INDEX, end.w4), - xive_get_field32(END2_W5_ESC_END_DATA, end.w5)); + if (xive2_end_is_escalate_end(&end)) { + /* + * Perform END Adaptive escalation processing + * The END trigger becomes an Escalation trigger + */ + xive2_router_end_notify(xrtr, + xive_get_field32(END2_W4_END_BLOCK, end.w4), + xive_get_field32(END2_W4_ESC_END_INDEX, end.w4), + xive_get_field32(END2_W5_ESC_END_DATA, end.w5)); + } /* end END adaptive escalation */ + + else { + uint32_t lisn; /* Logical Interrupt Source Number */ + + /* + * Perform ESB escalation processing + * E[N] == 1 --> N + * Req[Block] <- E[ESB_Block] + * Req[Index] <- E[ESB_Index] + * Req[Offset] <- 0x000 + * Execute Req command + */ + lisn = XIVE_EAS(xive_get_field32(END2_W4_END_BLOCK, end.w4), + xive_get_field32(END2_W4_ESC_END_INDEX, end.w4)); + + xive2_notify(xrtr, lisn, true /* pq_checked */); + } + + return; } -void xive2_router_notify(XiveNotifier *xn, uint32_t lisn, bool pq_checked) +void xive2_notify(Xive2Router *xrtr , uint32_t lisn, bool pq_checked) { - Xive2Router *xrtr = XIVE2_ROUTER(xn); uint8_t eas_blk = XIVE_EAS_BLOCK(lisn); uint32_t eas_idx = XIVE_EAS_INDEX(lisn); Xive2Eas eas; @@ -1606,13 +1627,30 @@ void xive2_router_notify(XiveNotifier *xn, uint32_t lisn, bool pq_checked) return; } + /* TODO: add support for EAS resume */ + if (xive2_eas_is_resume(&eas)) { + qemu_log_mask(LOG_UNIMP, + "XIVE: EAS resume processing unimplemented - LISN %x\n", + lisn); + return; + } + /* * The event trigger becomes an END trigger */ xive2_router_end_notify(xrtr, - xive_get_field64(EAS2_END_BLOCK, eas.w), - xive_get_field64(EAS2_END_INDEX, eas.w), - xive_get_field64(EAS2_END_DATA, eas.w)); + xive_get_field64(EAS2_END_BLOCK, eas.w), + xive_get_field64(EAS2_END_INDEX, eas.w), + xive_get_field64(EAS2_END_DATA, eas.w)); + return; +} + +void xive2_router_notify(XiveNotifier *xn, uint32_t lisn, bool pq_checked) +{ + Xive2Router *xrtr = XIVE2_ROUTER(xn); + + xive2_notify(xrtr, lisn, pq_checked); + return; } static const Property xive2_router_properties[] = { -- 2.50.1