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17 Jun 2020 14:23:31 -0700 IronPort-SDR: W2J6aehr5zbeKew7QrLRUZe2nEe48EBK2+8hMwbwqfb6lPxRC/ck9J+Ij+lpEW3b6nqcWRRk+I k5oolLvYdHbA== WDCIronportException: Internal Received: from unknown (HELO redsun50.ssa.fujisawa.hgst.com) ([10.149.66.24]) by uls-op-cesaip02.wdc.com with ESMTP; 17 Jun 2020 14:34:48 -0700 From: Dmitry Fomichev To: Kevin Wolf , Keith Busch , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Maxim Levitsky Subject: [PATCH v2 12/18] hw/block/nvme: Simulate Zone Active excursions Date: Thu, 18 Jun 2020 06:34:09 +0900 Message-Id: <20200617213415.22417-13-dmitry.fomichev@wdc.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20200617213415.22417-1-dmitry.fomichev@wdc.com> References: <20200617213415.22417-1-dmitry.fomichev@wdc.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=68.232.141.245; envelope-from=prvs=430b82a1d=dmitry.fomichev@wdc.com; helo=esa1.hgst.iphmx.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/17 17:34:28 X-ACL-Warn: Detected OS = FreeBSD 9.x or newer [fuzzy] X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Niklas Cassel , Damien Le Moal , qemu-block@nongnu.org, Dmitry Fomichev , qemu-devel@nongnu.org, Matias Bjorling Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Added a Boolean flag to turn on simulation of Zone Active Excursions. If the flag, "active_excursions", is set to true, the driver will try to finish one of the currently open zone if max active zones limit is going to get exceeded. Signed-off-by: Dmitry Fomichev --- hw/block/nvme.c | 24 +++++++++++++++++++++++- hw/block/nvme.h | 1 + 2 files changed, 24 insertions(+), 1 deletion(-) diff --git a/hw/block/nvme.c b/hw/block/nvme.c index 05a7cbcfcc..a29cbfcc96 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -540,6 +540,26 @@ static void nvme_auto_transition_zone(NvmeCtrl *n, NvmeNamespace *ns, { NvmeZone *zone; + if (n->params.active_excursions && adding_active && + n->params.max_active_zones && + ns->nr_active_zones == n->params.max_active_zones) { + zone = nvme_peek_zone_head(ns, ns->closed_zones); + if (zone) { + /* + * The namespace is at the limit of active zones. + * Try to finish one of the currently active zones + * to make the needed active zone resource available. + */ + nvme_aor_dec_active(n, ns); + nvme_assign_zone_state(n, ns, zone, NVME_ZONE_STATE_FULL); + zone->d.za &= ~(NVME_ZA_FINISH_RECOMMENDED | + NVME_ZA_RESET_RECOMMENDED); + zone->d.za |= NVME_ZA_FINISHED_BY_CTLR; + zone->tstamp = 0; + trace_pci_nvme_zone_finished_by_controller(zone->d.zslba); + } + } + if (implicit && n->params.max_open_zones && ns->nr_open_zones == n->params.max_open_zones) { zone = nvme_remove_zone_head(n, ns, ns->imp_open_zones); @@ -2631,7 +2651,7 @@ static int nvme_zoned_init_ns(NvmeCtrl *n, NvmeNamespace *ns, int lba_index, /* MAR/MOR are zeroes-based, 0xffffffff means no limit */ ns->id_ns_zoned->mar = cpu_to_le32(n->params.max_active_zones - 1); ns->id_ns_zoned->mor = cpu_to_le32(n->params.max_open_zones - 1); - ns->id_ns_zoned->zoc = 0; + ns->id_ns_zoned->zoc = cpu_to_le16(n->params.active_excursions ? 0x2 : 0); ns->id_ns_zoned->ozcs = n->params.cross_zone_read ? 0x01 : 0x00; ns->id_ns_zoned->lbafe[lba_index].zsze = cpu_to_le64(n->params.zone_size); @@ -2993,6 +3013,8 @@ static Property nvme_props[] = { DEFINE_PROP_INT32("max_active", NvmeCtrl, params.max_active_zones, 0), DEFINE_PROP_INT32("max_open", NvmeCtrl, params.max_open_zones, 0), DEFINE_PROP_BOOL("cross_zone_read", NvmeCtrl, params.cross_zone_read, true), + DEFINE_PROP_BOOL("active_excursions", NvmeCtrl, params.active_excursions, + false), DEFINE_PROP_UINT8("fill_pattern", NvmeCtrl, params.fill_pattern, 0), DEFINE_PROP_END_OF_LIST(), }; diff --git a/hw/block/nvme.h b/hw/block/nvme.h index f5a4679702..8a0aaeb09a 100644 --- a/hw/block/nvme.h +++ b/hw/block/nvme.h @@ -15,6 +15,7 @@ typedef struct NvmeParams { bool zoned; bool cross_zone_read; + bool active_excursions; uint8_t fill_pattern; uint32_t zamds_bs; uint64_t zone_size; -- 2.21.0