From nobody Tue Feb 10 15:01:02 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (208.118.235.17 [208.118.235.17]) by mx.zohomail.com with SMTPS id 15128092491471023.3303477923554; Sat, 9 Dec 2017 00:47:29 -0800 (PST) Received: from localhost ([::1]:40426 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eNan4-0002f7-G2 for importer@patchew.org; Sat, 09 Dec 2017 03:47:22 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45399) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eNakX-0001Be-3O for qemu-devel@nongnu.org; Sat, 09 Dec 2017 03:44:46 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eNakT-00072U-5z for qemu-devel@nongnu.org; Sat, 09 Dec 2017 03:44:45 -0500 Received: from 16.mo6.mail-out.ovh.net ([87.98.139.208]:35874) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eNakS-00071a-Sl for qemu-devel@nongnu.org; Sat, 09 Dec 2017 03:44:41 -0500 Received: from player735.ha.ovh.net (b9.ovh.net [213.186.33.59]) by mo6.mail-out.ovh.net (Postfix) with ESMTP id 6D9741276E5 for ; Sat, 9 Dec 2017 09:44:39 +0100 (CET) Received: from zorba.kaod.org.com (LFbn-1-2231-173.w90-76.abo.wanadoo.fr [90.76.52.173]) (Authenticated sender: clg@kaod.org) by player735.ha.ovh.net (Postfix) with ESMTPSA id 42692160087; Sat, 9 Dec 2017 09:44:33 +0100 (CET) From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: qemu-ppc@nongnu.org, qemu-devel@nongnu.org, David Gibson , Benjamin Herrenschmidt , Greg Kurz Date: Sat, 9 Dec 2017 09:43:26 +0100 Message-Id: <20171209084338.29395-8-clg@kaod.org> X-Mailer: git-send-email 2.13.6 In-Reply-To: <20171209084338.29395-1-clg@kaod.org> References: <20171209084338.29395-1-clg@kaod.org> MIME-Version: 1.0 X-Ovh-Tracer-Id: 11706825757597666131 X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: -100 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedtuddrvddugdduvdegucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuqfggjfdpvefjgfevmfevgfenuceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddm Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 87.98.139.208 Subject: [Qemu-devel] [PATCH v2 07/19] spapr: push the XIVE EQ data in OS event queue X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" If a triggered event is let through by the XIVE virtualization routing engine, the Event Queue data defined in the associated IVE is pushed in the in-memory event queue. The latter is a circular buffer provided by the OS using the H_INT_SET_QUEUE_CONFIG hcall, one per server and priority couple. Each Event Queue entry is 4 bytes long, the first bit being a 'generation' bit and the 31 following bits the EQ Data field. The EQ Data field provides a way to set an invariant logical event source number for an IRQ. It is set with the H_INT_SET_SOURCE_CONFIG hcall when the EISN flag is used. Signed-off-by: C=C3=A9dric Le Goater --- Changes since v1: - replaced dma_memory_write() by stl_be_dma() - improved 'info pic' output hw/intc/spapr_xive.c | 98 ++++++++++++++++++++++++++++++++++++++++++++++++= ++-- 1 file changed, 95 insertions(+), 3 deletions(-) diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c index 8e990d58ecf4..629563d01998 100644 --- a/hw/intc/spapr_xive.c +++ b/hw/intc/spapr_xive.c @@ -196,9 +196,87 @@ static sPAPRXiveNVT *spapr_xive_nvt_get(sPAPRXive *xiv= e, int server) return cpu ? SPAPR_XIVE_NVT(cpu->intc) : NULL; } =20 +static void spapr_xive_pic_print_info_eq(XiveEQ *eq, Monitor *mon) +{ + uint64_t qaddr_base =3D (((uint64_t)(eq->w2 & 0x0fffffff)) << 32) | eq= ->w3; + uint32_t qindex =3D GETFIELD(EQ_W1_PAGE_OFF, eq->w1); + uint32_t qgen =3D GETFIELD(EQ_W1_GENERATION, eq->w1); + uint32_t qsize =3D GETFIELD(EQ_W0_QSIZE, eq->w0); + uint32_t qentries =3D 1 << (qsize + 10); + + monitor_printf(mon, "eq:@%08" PRIx64"% 6d/%5d ^%d", qaddr_base, + qindex, qentries, qgen); +} + +static void spapr_xive_eq_push(XiveEQ *eq, uint32_t data) +{ + uint64_t qaddr_base =3D (((uint64_t)(eq->w2 & 0x0fffffff)) << 32) | eq= ->w3; + uint32_t qsize =3D GETFIELD(EQ_W0_QSIZE, eq->w0); + uint32_t qindex =3D GETFIELD(EQ_W1_PAGE_OFF, eq->w1); + uint32_t qgen =3D GETFIELD(EQ_W1_GENERATION, eq->w1); + + uint64_t qaddr =3D qaddr_base + (qindex << 2); + uint32_t qdata =3D (qgen << 31) | (data & 0x7fffffff); + uint32_t qentries =3D 1 << (qsize + 10); + + if (stl_be_dma(&address_space_memory, qaddr, qdata)) { + qemu_log_mask(LOG_GUEST_ERROR, "XIVE: failed to write EQ data @0x%" + HWADDR_PRIx "\n", qaddr); + return; + } + + qindex =3D (qindex + 1) % qentries; + if (qindex =3D=3D 0) { + qgen ^=3D 1; + eq->w1 =3D SETFIELD(EQ_W1_GENERATION, eq->w1, qgen); + } + eq->w1 =3D SETFIELD(EQ_W1_PAGE_OFF, eq->w1, qindex); +} + static void spapr_xive_irq(sPAPRXive *xive, int lisn) { + XiveIVE *ive; + XiveEQ *eq; + uint32_t eq_idx; + uint8_t priority; + + ive =3D spapr_xive_get_ive(xive, lisn); + if (!ive || !(ive->w & IVE_VALID)) { + qemu_log_mask(LOG_GUEST_ERROR, "XIVE: invalid LISN %d\n", lisn); + return; + } =20 + if (ive->w & IVE_MASKED) { + return; + } + + /* Find our XiveEQ */ + eq_idx =3D GETFIELD(IVE_EQ_INDEX, ive->w); + eq =3D spapr_xive_get_eq(xive, XIVE_EQ_INDEX_SERVER(eq_idx), + XIVE_EQ_INDEX_PRIO(eq_idx)); + if (!eq) { + qemu_log_mask(LOG_GUEST_ERROR, "XIVE: No EQ for LISN %d\n", lisn); + return; + } + + if (eq->w0 & EQ_W0_ENQUEUE) { + spapr_xive_eq_push(eq, GETFIELD(IVE_EQ_DATA, ive->w)); + } + + if (!(eq->w0 & EQ_W0_UCOND_NOTIFY)) { + qemu_log_mask(LOG_UNIMP, "XIVE: !UCOND_NOTIFY not implemented\n"); + } + + if (GETFIELD(EQ_W6_FORMAT_BIT, eq->w6) =3D=3D 0) { + priority =3D GETFIELD(EQ_W7_F0_PRIORITY, eq->w7); + + /* The EQ is masked. Can this happen ? */ + if (priority =3D=3D 0xff) { + g_assert_not_reached(); + } + } else { + qemu_log_mask(LOG_UNIMP, "XIVE: w7 format1 not implemented\n"); + } } =20 /* @@ -480,14 +558,28 @@ void spapr_xive_pic_print_info(sPAPRXive *xive, Monit= or *mon) pq =3D spapr_xive_pq_get(xive, i); eq_idx =3D GETFIELD(IVE_EQ_INDEX, ive->w); =20 - monitor_printf(mon, " %4x %s %s %c%c server:%d prio:%d %08x\n", i, + monitor_printf(mon, " %4x %s %s %c%c server:%d prio:%d ", i, spapr_xive_irq_is_lsi(xive, i) ? "LSI" : "MSI", ive->w & IVE_MASKED ? "M" : " ", pq & XIVE_ESB_VAL_P ? 'P' : '-', pq & XIVE_ESB_VAL_Q ? 'Q' : '-', XIVE_EQ_INDEX_SERVER(eq_idx), - XIVE_EQ_INDEX_PRIO(eq_idx), - (int) GETFIELD(IVE_EQ_DATA, ive->w)); + XIVE_EQ_INDEX_PRIO(eq_idx)); + + if (!(ive->w & IVE_MASKED)) { + XiveEQ *eq; + + eq =3D spapr_xive_get_eq(xive, XIVE_EQ_INDEX_SERVER(eq_idx), + XIVE_EQ_INDEX_PRIO(eq_idx)); + if (eq) { + spapr_xive_pic_print_info_eq(eq, mon); + monitor_printf(mon, " data:%08x", + (int) GETFIELD(IVE_EQ_DATA, ive->w)); + } else { + monitor_printf(mon, "no eq ?!"); + } + } + monitor_printf(mon, "\n"); } } =20 --=20 2.13.6