From patchwork Fri Mar 3 15:29:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13158955 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 92EB8C7EE2D for ; Fri, 3 Mar 2023 15:32:26 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pY7OR-0007EJ-63; Fri, 03 Mar 2023 10:32:23 -0500 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 1pY7OH-0006mq-Lb for qemu-devel@nongnu.org; Fri, 03 Mar 2023 10:32:15 -0500 Received: from frasgout.his.huawei.com ([185.176.79.56]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pY7OF-0001yO-5V for qemu-devel@nongnu.org; Fri, 03 Mar 2023 10:32:13 -0500 Received: from lhrpeml500005.china.huawei.com (unknown [172.18.147.207]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4PSsQc1xBHz6J7L6; Fri, 3 Mar 2023 23:31:52 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.21; Fri, 3 Mar 2023 15:32:08 +0000 To: , Michael Tsirkin , Fan Ni CC: , , Ira Weiny , Alison Schofield , Michael Roth , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Dave Jiang , Markus Armbruster , =?utf-8?q?Daniel_P_=2E_Berrang=C3=A9?= , Eric Blake , Mike Maslenkin , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , Thomas Huth Subject: [PATCH v4 6/7] hw/cxl/events: Add injection of DRAM events Date: Fri, 3 Mar 2023 15:29:02 +0000 Message-ID: <20230303152903.28103-7-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20230303152903.28103-1-Jonathan.Cameron@huawei.com> References: <20230303152903.28103-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhrpeml100006.china.huawei.com (7.191.160.224) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CFilter-Loop: Reflected Received-SPF: pass client-ip=185.176.79.56; envelope-from=jonathan.cameron@huawei.com; helo=frasgout.his.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H2=-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: , Reply-to: Jonathan Cameron X-Patchwork-Original-From: Jonathan Cameron via From: Jonathan Cameron Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Defined in CXL r3.0 8.2.9.2.1.2 DRAM Event Record, this event provides information related to DRAM devices. Example injection command in QMP: { "execute": "cxl-inject-dram-event", "arguments": { "path": "/machine/peripheral/cxl-mem0", "log": "informational", "flags": 1, "physaddr": 1000, "descriptor": 3, "type": 3, "transaction-type": 192, "channel": 3, "rank": 17, "nibble-mask": 37421234, "bank-group": 7, "bank": 11, "row": 2, "column": 77, "correction-mask": [33, 44, 55,66] }} Reviewed-by: Ira Weiny Signed-off-by: Jonathan Cameron --- v4: Endian fix and correct timestamp for header. --- hw/mem/cxl_type3.c | 116 ++++++++++++++++++++++++++++++++++++ hw/mem/cxl_type3_stubs.c | 13 ++++ include/hw/cxl/cxl_events.h | 23 +++++++ qapi/cxl.json | 35 +++++++++++ 4 files changed, 187 insertions(+) diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c index 2900b236cd..526d55ee13 100644 --- a/hw/mem/cxl_type3.c +++ b/hw/mem/cxl_type3.c @@ -1167,6 +1167,11 @@ static const QemuUUID gen_media_uuid = { 0x85, 0xa9, 0x08, 0x8b, 0x16, 0x21, 0xeb, 0xa6), }; +static const QemuUUID dram_uuid = { + .data = UUID(0x601dcbb3, 0x9c06, 0x4eab, 0xb8, 0xaf, + 0x4e, 0x9b, 0xfb, 0x5c, 0x96, 0x24), +}; + #define CXL_GMER_VALID_CHANNEL BIT(0) #define CXL_GMER_VALID_RANK BIT(1) #define CXL_GMER_VALID_DEVICE BIT(2) @@ -1263,6 +1268,117 @@ void qmp_cxl_inject_gen_media_event(const char *path, CxlEventLog log, } } +#define CXL_DRAM_VALID_CHANNEL BIT(0) +#define CXL_DRAM_VALID_RANK BIT(1) +#define CXL_DRAM_VALID_NIBBLE_MASK BIT(2) +#define CXL_DRAM_VALID_BANK_GROUP BIT(3) +#define CXL_DRAM_VALID_BANK BIT(4) +#define CXL_DRAM_VALID_ROW BIT(5) +#define CXL_DRAM_VALID_COLUMN BIT(6) +#define CXL_DRAM_VALID_CORRECTION_MASK BIT(7) + +void qmp_cxl_inject_dram_event(const char *path, CxlEventLog log, uint8_t flags, + uint64_t physaddr, uint8_t descriptor, + uint8_t type, uint8_t transaction_type, + bool has_channel, uint8_t channel, + bool has_rank, uint8_t rank, + bool has_nibble_mask, uint32_t nibble_mask, + bool has_bank_group, uint8_t bank_group, + bool has_bank, uint8_t bank, + bool has_row, uint32_t row, + bool has_column, uint16_t column, + bool has_correction_mask, uint64List *correction_mask, + Error **errp) +{ + Object *obj = object_resolve_path(path, NULL); + CXLEventDram dram; + CXLEventRecordHdr *hdr = &dram.hdr; + CXLDeviceState *cxlds; + CXLType3Dev *ct3d; + uint16_t valid_flags = 0; + uint8_t enc_log; + int rc; + + if (!obj) { + error_setg(errp, "Unable to resolve path"); + return; + } + if (!object_dynamic_cast(obj, TYPE_CXL_TYPE3)) { + error_setg(errp, "Path does not point to a CXL type 3 device"); + return; + } + ct3d = CXL_TYPE3(obj); + cxlds = &ct3d->cxl_dstate; + + rc = ct3d_qmp_cxl_event_log_enc(log); + if (rc < 0) { + error_setg(errp, "Unhandled error log type"); + return; + } + enc_log = rc; + + memset(&dram, 0, sizeof(dram)); + cxl_assign_event_header(hdr, &dram_uuid, flags, sizeof(dram), + cxl_device_get_timestamp(&ct3d->cxl_dstate)); + stq_le_p(&dram.phys_addr, physaddr); + dram.descriptor = descriptor; + dram.type = type; + dram.transaction_type = transaction_type; + + if (has_channel) { + dram.channel = channel; + valid_flags |= CXL_DRAM_VALID_CHANNEL; + } + + if (has_rank) { + dram.rank = rank; + valid_flags |= CXL_DRAM_VALID_RANK; + } + + if (has_nibble_mask) { + st24_le_p(dram.nibble_mask, nibble_mask); + valid_flags |= CXL_DRAM_VALID_NIBBLE_MASK; + } + + if (has_bank_group) { + dram.bank_group = bank_group; + valid_flags |= CXL_DRAM_VALID_BANK_GROUP; + } + + if (has_bank) { + dram.bank = bank; + valid_flags |= CXL_DRAM_VALID_BANK; + } + + if (has_row) { + st24_le_p(dram.row, row); + valid_flags |= CXL_DRAM_VALID_ROW; + } + + if (has_column) { + stw_le_p(&dram.column, column); + valid_flags |= CXL_DRAM_VALID_COLUMN; + } + + if (has_correction_mask) { + int count = 0; + while (correction_mask && count < 4) { + stq_le_p(&dram.correction_mask[count], + correction_mask->value); + count++; + correction_mask = correction_mask->next; + } + valid_flags |= CXL_DRAM_VALID_CORRECTION_MASK; + } + + stw_le_p(&dram.validity_flags, valid_flags); + + if (cxl_event_insert(cxlds, enc_log, (CXLEventRecordRaw *)&dram)) { + cxl_event_irq_assert(ct3d); + } + return; +} + static void ct3_class_init(ObjectClass *oc, void *data) { DeviceClass *dc = DEVICE_CLASS(oc); diff --git a/hw/mem/cxl_type3_stubs.c b/hw/mem/cxl_type3_stubs.c index 55d19b0e03..235c171264 100644 --- a/hw/mem/cxl_type3_stubs.c +++ b/hw/mem/cxl_type3_stubs.c @@ -13,6 +13,19 @@ void qmp_cxl_inject_gen_media_event(const char *path, CxlEventLog log, const char *component_id, Error **errp) {} +void qmp_cxl_inject_dram_event(const char *path, CxlEventLog log, uint8_t flags, + uint64_t physaddr, uint8_t descriptor, + uint8_t type, uint8_t transaction_type, + bool has_channel, uint8_t channel, + bool has_rank, uint8_t rank, + bool has_nibble_mask, uint32_t nibble_mask, + bool has_bank_group, uint8_t bank_group, + bool has_bank, uint8_t bank, + bool has_row, uint32_t row, + bool has_column, uint16_t column, + bool has_correction_mask, uint64List *correction_mask, + Error **errp) {} + void qmp_cxl_inject_poison(const char *path, uint64_t start, uint64_t length, Error **errp) { diff --git a/include/hw/cxl/cxl_events.h b/include/hw/cxl/cxl_events.h index b189193f4c..a39e30d973 100644 --- a/include/hw/cxl/cxl_events.h +++ b/include/hw/cxl/cxl_events.h @@ -123,4 +123,27 @@ typedef struct CXLEventGenMedia { uint8_t reserved[CXL_EVENT_GEN_MED_RES_SIZE]; } QEMU_PACKED CXLEventGenMedia; +/* + * DRAM Event Record + * CXL Rev 3.0 Section 8.2.9.2.1.2: Table 8-44 + * All fields little endian. + */ +typedef struct CXLEventDram { + CXLEventRecordHdr hdr; + uint64_t phys_addr; + uint8_t descriptor; + uint8_t type; + uint8_t transaction_type; + uint16_t validity_flags; + uint8_t channel; + uint8_t rank; + uint8_t nibble_mask[3]; + uint8_t bank_group; + uint8_t bank; + uint8_t row[3]; + uint16_t column; + uint64_t correction_mask[4]; + uint8_t reserved[0x17]; +} QEMU_PACKED CXLEventDram; + #endif /* CXL_EVENTS_H */ diff --git a/qapi/cxl.json b/qapi/cxl.json index 4ec06c0335..32f340d972 100644 --- a/qapi/cxl.json +++ b/qapi/cxl.json @@ -55,6 +55,41 @@ '*device': 'uint32', '*component-id': 'str' }} +## +# @cxl-inject-dram-event: +# +# Inject an event record for a DRAM Event (CXL r3.0 8.2.9.2.1.2) +# This event type is reported via one of the event logs specified via +# the log parameter. +# +# @path: CXL type 3 device canonical QOM path +# @log: Event Log to add the event to +# @flags: header flags +# @physaddr: Physical Address +# @descriptor: Descriptor +# @type: Type +# @transaction-type: Transaction Type +# @channel: Channel +# @rank: Rank +# @nibble-mask: Identify one or more nibbles that the error affects +# @bank-group: Bank group +# @bank: Bank +# @row: Row +# @column: Column +# @correction-mask: Bits within each nibble. Used in order of bits set +# in the nibble-mask. Up to 4 nibbles may be covered. +# +# Since: 8.0 +## +{ 'command': 'cxl-inject-dram-event', + 'data': { 'path': 'str', 'log': 'CxlEventLog', 'flags': 'uint8', + 'physaddr': 'uint64', 'descriptor': 'uint8', + 'type': 'uint8', 'transaction-type': 'uint8', + '*channel': 'uint8', '*rank': 'uint8', '*nibble-mask': 'uint32', + '*bank-group': 'uint8', '*bank': 'uint8', '*row': 'uint32', + '*column': 'uint16', '*correction-mask': [ 'uint64' ] + }} + ## # @cxl-inject-poison: #