From patchwork Tue Jul 23 10:55:55 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Michael S. Tsirkin" X-Patchwork-Id: 1963747 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=T9TjOGOT; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4WSvGT5xZxz20Fc for ; Tue, 23 Jul 2024 20:56:33 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sWDBg-0007ob-LL; Tue, 23 Jul 2024 06:56:08 -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 1sWDBe-0007gP-RV for qemu-devel@nongnu.org; Tue, 23 Jul 2024 06:56:06 -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 1sWDBc-0001eB-VD for qemu-devel@nongnu.org; Tue, 23 Jul 2024 06:56:06 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1721732164; 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: in-reply-to:in-reply-to:references:references; bh=V7i/ikH3mbc0bL34LgKCgRiXDl4kA7AlgZAMAJaf21I=; b=T9TjOGOTXSfTU8f8n3BaSUGlA+REP/nofkpr7qgYXhVYtJkourxKQmmgCYq8Rh5xpGm9dj KgYVPcwbuHl7Kt4f6FYyIO5NJbt4ThImI4rVKKmvHtt5oErlY8QIUm76+El60Quc5ftQ67 TBHSPDtQTDH6ha+MSu2HXXJmZh0XKh0= Received: from mail-ej1-f72.google.com (mail-ej1-f72.google.com [209.85.218.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-441-nTEO2rEmMjGtGq9H8I5oXg-1; Tue, 23 Jul 2024 06:56:02 -0400 X-MC-Unique: nTEO2rEmMjGtGq9H8I5oXg-1 Received: by mail-ej1-f72.google.com with SMTP id a640c23a62f3a-a77f48f2118so114382466b.1 for ; Tue, 23 Jul 2024 03:56:01 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1721732160; x=1722336960; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=V7i/ikH3mbc0bL34LgKCgRiXDl4kA7AlgZAMAJaf21I=; b=FKJRUMn8HRwhQ60XcH6PjTUzs9GdkdALSW1wRaRAurd4RKpBo/8lw6LhexvXOOPq74 faARd0RXXtpVYd3waHL671T3N7iF8VqH5pJ+Lqltkh6dXw/umLOS1xEpcsO90r5ZYBea qP1CUmwEVHJNwhIUAOa1KqXTWa0H7w/2oaStQmkjIKmEUAlw1SraJ6cwV/8F3i7LJ1tP iwfu+ka8+908LfCW6Zrc/L2jlYLVgOwaR3AfQP7coUutdJWKxrAxAqV140/O6JCarcMz PjEltcEL0RvatYpS5IeygXPuVsUolf0b42+ckRwe+J8Zafz3q6AChiNbvo+qkHwzi9/e 4RWQ== X-Gm-Message-State: AOJu0YwnNQhCAm5Pxu1cg5TqeLhOXAAhEpLNooMjnAnG2qiTaFOxL4B3 /cpPkmzSaSEU4XPhe1PiGfoAnXhf45AD56aGTwo+aq2lVFt2B4BumuYbaeBg2Tt1Eq4hrdnAjHR MoHcDRt5kAC1d6PUKh+vxqCabsI6J7+NqAI427R/CGwiqcWE32/IlU4NK4l/LaVzLSDQk79tLZL VP/6u4eE6Y1f+l3Jp2VnsL2S4Rz+0Opg== X-Received: by 2002:a17:907:2dab:b0:a72:7a71:7f4f with SMTP id a640c23a62f3a-a7a93f36b39mr172560466b.7.1721732160508; Tue, 23 Jul 2024 03:56:00 -0700 (PDT) X-Google-Smtp-Source: AGHT+IF76SdFlrWp+Ys26+TZ6xK0PB1WL69clRlKVeQWxEuDBRCzDmr0RcbvyOyJyJpm/GVOoc6tzQ== X-Received: by 2002:a17:907:2dab:b0:a72:7a71:7f4f with SMTP id a640c23a62f3a-a7a93f36b39mr172557266b.7.1721732159845; Tue, 23 Jul 2024 03:55:59 -0700 (PDT) Received: from redhat.com ([2a0d:6fc7:440:9c9a:ffee:509d:1766:aa7f]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a7a3c7bea7esm527848766b.83.2024.07.23.03.55.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Jul 2024 03:55:59 -0700 (PDT) Date: Tue, 23 Jul 2024 06:55:55 -0400 From: "Michael S. Tsirkin" To: qemu-devel@nongnu.org Cc: Peter Maydell , Davidlohr Bueso , Jonathan Cameron , Fan Ni Subject: [PULL v2 09/61] hw/cxl: Add get scan media results cmd support Message-ID: <89b5cfcc31e655a40919698a7f95a9208d6f12a3.1721731723.git.mst@redhat.com> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Mailer: git-send-email 2.27.0.106.g8ac3dc51b1 X-Mutt-Fcc: =sent Received-SPF: pass client-ip=170.10.129.124; envelope-from=mst@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.133, 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_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Davidlohr Bueso Iterate over the list keeping the output payload size into account, returning the results from a previous scan media operation. The scan media operation does not fail prematurely due to device being out of storage, so this implementation does not deal with the retry/restart functionality. Signed-off-by: Davidlohr Bueso Link: https://lore.kernel.org/r/20230908073152.4386-5-dave@stgolabs.net Signed-off-by: Jonathan Cameron Message-Id: <20240705120643.959422-5-Jonathan.Cameron@huawei.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- include/hw/cxl/cxl_device.h | 1 + hw/cxl/cxl-mailbox-utils.c | 85 +++++++++++++++++++++++++++++++++++++ 2 files changed, 86 insertions(+) diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h index 0509d961c3..cc98553583 100644 --- a/include/hw/cxl/cxl_device.h +++ b/include/hw/cxl/cxl_device.h @@ -499,6 +499,7 @@ struct CXLType3Dev { /* Poison Injection - backup */ CXLPoisonList poison_list_bkp; CXLPoisonList scan_media_results; + bool scan_media_hasrun; struct dynamic_capacity { HostMemoryBackend *host_dc; diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c index 3c9600c39c..82120a6e7b 100644 --- a/hw/cxl/cxl-mailbox-utils.c +++ b/hw/cxl/cxl-mailbox-utils.c @@ -85,6 +85,7 @@ enum { #define CLEAR_POISON 0x2 #define GET_SCAN_MEDIA_CAPABILITIES 0x3 #define SCAN_MEDIA 0x4 + #define GET_SCAN_MEDIA_RESULTS 0x5 DCD_CONFIG = 0x48, #define GET_DC_CONFIG 0x0 #define GET_DYN_CAP_EXT_LIST 0x1 @@ -1339,6 +1340,8 @@ static void __do_scan_media(CXLType3Dev *ct3d) ct3d->poison_list_cnt == results_cnt) { cxl_clear_poison_list_overflowed(ct3d); } + /* scan media has run since last conventional reset */ + ct3d->scan_media_hasrun = true; } /* @@ -1443,6 +1446,85 @@ static CXLRetCode cmd_media_scan_media(const struct cxl_cmd *cmd, return CXL_MBOX_BG_STARTED; } +/* + * CXL r3.1 section 8.2.9.9.4.6: Get Scan Media Results + */ +static CXLRetCode cmd_media_get_scan_media_results(const struct cxl_cmd *cmd, + uint8_t *payload_in, + size_t len_in, + uint8_t *payload_out, + size_t *len_out, + CXLCCI *cci) +{ + struct get_scan_media_results_out_pl { + uint64_t dpa_restart; + uint64_t length; + uint8_t flags; + uint8_t rsvd1; + uint16_t count; + uint8_t rsvd2[0xc]; + struct { + uint64_t addr; + uint32_t length; + uint32_t resv; + } QEMU_PACKED records[]; + } QEMU_PACKED; + + struct get_scan_media_results_out_pl *out = (void *)payload_out; + CXLType3Dev *ct3d = CXL_TYPE3(cci->d); + CXLPoisonList *scan_media_results = &ct3d->scan_media_results; + CXLPoison *ent, *next; + uint16_t total_count = 0, record_count = 0, i = 0; + uint16_t out_pl_len; + + if (!ct3d->scan_media_hasrun) { + return CXL_MBOX_UNSUPPORTED; + } + + /* + * Calculate limits, all entries are within the same address range of the + * last scan media call. + */ + QLIST_FOREACH(ent, scan_media_results, node) { + size_t rec_size = record_count * sizeof(out->records[0]); + + if (sizeof(*out) + rec_size < CXL_MAILBOX_MAX_PAYLOAD_SIZE) { + record_count++; + } + total_count++; + } + + out_pl_len = sizeof(*out) + record_count * sizeof(out->records[0]); + assert(out_pl_len <= CXL_MAILBOX_MAX_PAYLOAD_SIZE); + + memset(out, 0, out_pl_len); + QLIST_FOREACH_SAFE(ent, scan_media_results, node, next) { + uint64_t start, stop; + + if (i == record_count) { + break; + } + + start = ROUND_DOWN(ent->start, 64ull); + stop = ROUND_DOWN(ent->start, 64ull) + ent->length; + stq_le_p(&out->records[i].addr, start | (ent->type & 0x7)); + stl_le_p(&out->records[i].length, (stop - start) / CXL_CACHE_LINE_SIZE); + i++; + + /* consume the returning entry */ + QLIST_REMOVE(ent, node); + g_free(ent); + } + + stw_le_p(&out->count, record_count); + if (total_count > record_count) { + out->flags = (1 << 0); /* More Media Error Records */ + } + + *len_out = out_pl_len; + return CXL_MBOX_SUCCESS; +} + /* * CXL r3.1 section 8.2.9.9.9.1: Get Dynamic Capacity Configuration * (Opcode: 4800h) @@ -2060,6 +2142,9 @@ static const struct cxl_cmd cxl_cmd_set[256][256] = { cmd_media_get_scan_media_capabilities, 16, 0 }, [MEDIA_AND_POISON][SCAN_MEDIA] = { "MEDIA_AND_POISON_SCAN_MEDIA", cmd_media_scan_media, 17, BACKGROUND_OPERATION }, + [MEDIA_AND_POISON][GET_SCAN_MEDIA_RESULTS] = { + "MEDIA_AND_POISON_GET_SCAN_MEDIA_RESULTS", + cmd_media_get_scan_media_results, 0, 0 }, }; static const struct cxl_cmd cxl_cmd_set_dcd[256][256] = {