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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=210.118.77.11; envelope-from=j.granados@samsung.com; helo=mailout1.w1.samsung.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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, T_SPF_TEMPERROR=0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Mon, 14 Nov 2022 18:47:40 -0500 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @samsung.com) X-ZM-MESSAGEID: 1668469996683100001 Content-Type: text/plain; charset="utf-8" In order to return the units_{read/written} required by the SMART log we need to shift the number of bytes value by BDRV_SECTORS_BITS and multiply by 1000. This is a prep patch that moves this adjustment to where the SMART log is calculated in order to use the stats struct for calculating OCP extended smart log values. Signed-off-by: Joel Granados Reviewed-by: Klaus Jensen --- hw/nvme/ctrl.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c index 87aeba0564..220683201a 100644 --- a/hw/nvme/ctrl.c +++ b/hw/nvme/ctrl.c @@ -4449,8 +4449,8 @@ static void nvme_set_blk_stats(NvmeNamespace *ns, str= uct nvme_stats *stats) { BlockAcctStats *s =3D blk_get_stats(ns->blkconf.blk); =20 - stats->units_read +=3D s->nr_bytes[BLOCK_ACCT_READ] >> BDRV_SECTOR_BIT= S; - stats->units_written +=3D s->nr_bytes[BLOCK_ACCT_WRITE] >> BDRV_SECTOR= _BITS; + stats->units_read +=3D s->nr_bytes[BLOCK_ACCT_READ]; + stats->units_written +=3D s->nr_bytes[BLOCK_ACCT_WRITE]; stats->read_commands +=3D s->nr_ops[BLOCK_ACCT_READ]; stats->write_commands +=3D s->nr_ops[BLOCK_ACCT_WRITE]; } @@ -4490,10 +4490,12 @@ static uint16_t nvme_smart_info(NvmeCtrl *n, uint8_= t rae, uint32_t buf_len, trans_len =3D MIN(sizeof(smart) - off, buf_len); smart.critical_warning =3D n->smart_critical_warning; =20 - smart.data_units_read[0] =3D cpu_to_le64(DIV_ROUND_UP(stats.units_read, - 1000)); - smart.data_units_written[0] =3D cpu_to_le64(DIV_ROUND_UP(stats.units_w= ritten, - 1000)); + smart.data_units_read[0] =3D cpu_to_le64(DIV_ROUND_UP( + stats.units_read >> BDRV_SECTOR= _BITS, + 1000)); + smart.data_units_written[0] =3D cpu_to_le64(DIV_ROUND_UP( + stats.units_written >> BDRV_= SECTOR_BITS, + 1000)); smart.host_read_commands[0] =3D cpu_to_le64(stats.read_commands); smart.host_write_commands[0] =3D cpu_to_le64(stats.write_commands); =20 --=20 2.30.2 From nobody Sat May 11 22:51:41 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=samsung.com ARC-Seal: i=1; a=rsa-sha256; t=1668472774; cv=none; d=zohomail.com; s=zohoarc; b=EYgN83uWkXg+LYHbwowBl4SoIeJg5JyPS6QKCCYO1pReY2FoaDgQDYRCMQ2j8ayRx7ywEHvVuQ4t3Oun52+Af+Ev2140GJ0WjZyeYhCpD8vhXJRe6cw9fguxsddNpUAR1BNbn51w5+D/1jx1n+d07wRwaszD4sJ/TqbBs7jSUik= ARC-Message-Signature: i=1; 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charset="utf-8" The Open Compute Project defines a Datacenter NVMe SSD Spec that sits on top of the NVMe spec. Additional commands and NVMe behaviors specific for the Datacenter. This is a preparation patch that introduces an argument to activate OCP in nvme. Signed-off-by: Joel Granados --- hw/nvme/nvme.h | 1 + hw/nvme/subsys.c | 4 ++-- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/hw/nvme/nvme.h b/hw/nvme/nvme.h index 79f5c281c2..aa99c0c57c 100644 --- a/hw/nvme/nvme.h +++ b/hw/nvme/nvme.h @@ -56,6 +56,7 @@ typedef struct NvmeSubsystem { =20 struct { char *nqn; + bool ocp; } params; } NvmeSubsystem; =20 diff --git a/hw/nvme/subsys.c b/hw/nvme/subsys.c index 9d2643678b..ecca28449c 100644 --- a/hw/nvme/subsys.c +++ b/hw/nvme/subsys.c @@ -129,8 +129,8 @@ static void nvme_subsys_realize(DeviceState *dev, Error= **errp) =20 static Property nvme_subsystem_props[] =3D { DEFINE_PROP_STRING("nqn", NvmeSubsystem, params.nqn), - DEFINE_PROP_END_OF_LIST(), -}; + DEFINE_PROP_BOOL("ocp", NvmeSubsystem, params.ocp, false), + DEFINE_PROP_END_OF_LIST(), }; =20 static void nvme_subsys_class_init(ObjectClass *oc, void *data) { --=20 2.30.2 From nobody Sat May 11 22:51:41 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=210.118.77.11; envelope-from=j.granados@samsung.com; helo=mailout1.w1.samsung.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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Mon, 14 Nov 2022 18:47:40 -0500 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @samsung.com) X-ZM-MESSAGEID: 1668472731022100001 Content-Type: text/plain; charset="utf-8" In order to evaluate write amplification factor (WAF) within the storage stack it is important to know the number of bytes written to the controller. The existing SMART log value of Data Units Written is too coarse (given in units of 500 Kb) and so we add the SMART health information extended from the OCP specification (given in units of bytes). To accomodate different vendor specific specifications like OCP, we add a multiplexing function (nvme_vendor_specific_log) which will route to the different log functions based on arguments and log ids. We only return the OCP extended smart log when the command is 0xC0 and ocp has been turned on in the args. Though we add the whole nvme smart log extended structure, we only populate the physical_media_units_{read,written}, log_page_version and log_page_uuid. Signed-off-by: Joel Granados squash with main Signed-off-by: Joel Granados --- hw/nvme/ctrl.c | 56 ++++++++++++++++++++++++++++++++++++++++++++ include/block/nvme.h | 36 ++++++++++++++++++++++++++++ 2 files changed, 92 insertions(+) diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c index 220683201a..5e6a8150a2 100644 --- a/hw/nvme/ctrl.c +++ b/hw/nvme/ctrl.c @@ -4455,6 +4455,42 @@ static void nvme_set_blk_stats(NvmeNamespace *ns, st= ruct nvme_stats *stats) stats->write_commands +=3D s->nr_ops[BLOCK_ACCT_WRITE]; } =20 +static uint16_t nvme_ocp_extended_smart_info(NvmeCtrl *n, uint8_t rae, + uint32_t buf_len, uint64_t of= f, + NvmeRequest *req) +{ + NvmeNamespace *ns =3D NULL; + NvmeSmartLogExtended smart_ext =3D { 0 }; + struct nvme_stats stats =3D { 0 }; + uint32_t trans_len; + + if (off >=3D sizeof(smart_ext)) { + return NVME_INVALID_FIELD | NVME_DNR; + } + + // Accumulate all stats from all namespaces + for (int i =3D 1; i <=3D NVME_MAX_NAMESPACES; i++) { + ns =3D nvme_ns(n, i); + if (ns) + { + nvme_set_blk_stats(ns, &stats); + } + } + + smart_ext.physical_media_units_written[0] =3D cpu_to_le32(stats.units_= written); + smart_ext.physical_media_units_read[0] =3D cpu_to_le32(stats.units_rea= d); + smart_ext.log_page_version =3D 0x0003; + smart_ext.log_page_uuid[0] =3D 0xA4F2BFEA2810AFC5; + smart_ext.log_page_uuid[1] =3D 0xAFD514C97C6F4F9C; + + if (!rae) { + nvme_clear_events(n, NVME_AER_TYPE_SMART); + } + + trans_len =3D MIN(sizeof(smart_ext) - off, buf_len); + return nvme_c2h(n, (uint8_t *) &smart_ext + off, trans_len, req); +} + static uint16_t nvme_smart_info(NvmeCtrl *n, uint8_t rae, uint32_t buf_len, uint64_t off, NvmeRequest *req) { @@ -4642,6 +4678,24 @@ static uint16_t nvme_cmd_effects(NvmeCtrl *n, uint8_= t csi, uint32_t buf_len, return nvme_c2h(n, ((uint8_t *)&log) + off, trans_len, req); } =20 +static uint16_t nvme_vendor_specific_log(uint8_t lid, NvmeCtrl *n, uint8_t= rae, + uint32_t buf_len, uint64_t off, + NvmeRequest *req) +{ + NvmeSubsystem *subsys =3D n->subsys; + switch (lid) { + case NVME_LOG_VENDOR_START: + if (subsys->params.ocp) { + return nvme_ocp_extended_smart_info(n, rae, buf_len, off, = req); + } + break; + /* Add a case for each additional vendor specific log id */ + } + + trace_pci_nvme_err_invalid_log_page(nvme_cid(req), lid); + return NVME_INVALID_FIELD | NVME_DNR; +} + static uint16_t nvme_get_log(NvmeCtrl *n, NvmeRequest *req) { NvmeCmd *cmd =3D &req->cmd; @@ -4683,6 +4737,8 @@ static uint16_t nvme_get_log(NvmeCtrl *n, NvmeRequest= *req) return nvme_error_info(n, rae, len, off, req); case NVME_LOG_SMART_INFO: return nvme_smart_info(n, rae, len, off, req); + case NVME_LOG_VENDOR_START...NVME_LOG_VENDOR_END: + return nvme_vendor_specific_log(lid, n, rae, len, off, req); case NVME_LOG_FW_SLOT_INFO: return nvme_fw_log_info(n, len, off, req); case NVME_LOG_CHANGED_NSLIST: diff --git a/include/block/nvme.h b/include/block/nvme.h index 8027b7126b..2ab0dca529 100644 --- a/include/block/nvme.h +++ b/include/block/nvme.h @@ -978,6 +978,40 @@ typedef struct QEMU_PACKED NvmeSmartLog { uint8_t reserved2[320]; } NvmeSmartLog; =20 +typedef struct QEMU_PACKED NvmeSmartLogExtended { + uint64_t physical_media_units_written[2]; + uint64_t physical_media_units_read[2]; + uint64_t bad_user_blocks; + uint64_t bad_system_nand_blocks; + uint64_t xor_recovery_count; + uint64_t uncorrectable_read_error_count; + uint64_t soft_ecc_error_count; + uint64_t end2end_correction_counts; + uint8_t system_data_percent_used; + uint8_t refresh_counts[7]; + uint64_t user_data_erase_counts; + uint16_t thermal_throttling_stat_and_count; + uint16_t dssd_spec_version[3]; + uint64_t pcie_correctable_error_count; + uint32_t incomplete_shutdowns; + uint32_t reserved0; + uint8_t percent_free_blocks; + uint8_t reserved1[7]; + uint16_t capacity_health; + uint8_t nvme_errata_ver; + uint8_t reserved2[5]; + uint64_t unaligned_io; + uint64_t security_ver_num; + uint64_t total_nuse; + uint64_t plp_start_count[2]; + uint64_t endurance_estimate[2]; + uint64_t pcie_retraining_count; + uint64_t power_state_change_count; + uint8_t reserved3[286]; + uint16_t log_page_version; + uint64_t log_page_uuid[2]; +} NvmeSmartLogExtended; + #define NVME_SMART_WARN_MAX 6 enum NvmeSmartWarn { NVME_SMART_SPARE =3D 1 << 0, @@ -1010,6 +1044,8 @@ enum NvmeLogIdentifier { NVME_LOG_FW_SLOT_INFO =3D 0x03, NVME_LOG_CHANGED_NSLIST =3D 0x04, NVME_LOG_CMD_EFFECTS =3D 0x05, + NVME_LOG_VENDOR_START =3D 0xC0, + NVME_LOG_VENDOR_END =3D 0xFF, }; =20 typedef struct QEMU_PACKED NvmePSD { --=20 2.30.2