From patchwork Tue Oct 15 10:38:47 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Klaus Jensen X-Patchwork-Id: 1176902 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) 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=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=irrelevant.dk 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 ozlabs.org (Postfix) with ESMTPS id 46ssW35xQ6z9sP7 for ; Tue, 15 Oct 2019 21:44:31 +1100 (AEDT) Received: from localhost ([::1]:40186 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iKKJZ-0003uB-5j for incoming@patchwork.ozlabs.org; Tue, 15 Oct 2019 06:44:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:47765) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iKKEb-0007Se-UH for qemu-devel@nongnu.org; Tue, 15 Oct 2019 06:39:23 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iKKEa-0006Hs-5s for qemu-devel@nongnu.org; Tue, 15 Oct 2019 06:39:21 -0400 Received: from charlie.dont.surf ([128.199.63.193]:54804) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iKKEW-0006C2-61; Tue, 15 Oct 2019 06:39:16 -0400 Received: from apples.localdomain (unknown [194.62.217.57]) by charlie.dont.surf (Postfix) with ESMTPSA id 2A1FEBF8DB; Tue, 15 Oct 2019 10:39:15 +0000 (UTC) From: Klaus Jensen To: qemu-block@nongnu.org Subject: [PATCH v2 07/20] nvme: refactor device realization Date: Tue, 15 Oct 2019 12:38:47 +0200 Message-Id: <20191015103900.313928-8-its@irrelevant.dk> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191015103900.313928-1-its@irrelevant.dk> References: <20191015103900.313928-1-its@irrelevant.dk> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 128.199.63.193 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: Kevin Wolf , Fam Zheng , Javier Gonzalez , qemu-devel@nongnu.org, Max Reitz , Keith Busch , Paul Durrant , Stephen Bates Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This patch splits up nvme_realize into multiple individual functions, each initializing a different subset of the device. Signed-off-by: Klaus Jensen --- hw/block/nvme.c | 176 +++++++++++++++++++++++++++++++----------------- hw/block/nvme.h | 22 ++++++ 2 files changed, 135 insertions(+), 63 deletions(-) diff --git a/hw/block/nvme.c b/hw/block/nvme.c index 84e4f2ea7a15..1fdb3b8655ed 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -43,6 +43,8 @@ #include "trace.h" #include "nvme.h" +#define NVME_MAX_QS PCI_MSIX_FLAGS_QSIZE + #define NVME_GUEST_ERR(trace, fmt, ...) \ do { \ (trace_##trace)(__VA_ARGS__); \ @@ -1336,67 +1338,106 @@ static const MemoryRegionOps nvme_cmb_ops = { }, }; -static void nvme_realize(PCIDevice *pci_dev, Error **errp) +static int nvme_check_constraints(NvmeCtrl *n, Error **errp) { - NvmeCtrl *n = NVME(pci_dev); - NvmeIdCtrl *id = &n->id_ctrl; - - int i; - int64_t bs_size; - uint8_t *pci_conf; - - if (!n->params.num_queues) { - error_setg(errp, "num_queues can't be zero"); - return; - } + NvmeParams *params = &n->params; if (!n->conf.blk) { - error_setg(errp, "drive property not set"); - return; + error_setg(errp, "nvme: block backend not configured"); + return 1; } - bs_size = blk_getlength(n->conf.blk); - if (bs_size < 0) { - error_setg(errp, "could not get backing file size"); - return; + if (!params->serial) { + error_setg(errp, "nvme: serial not configured"); + return 1; } - if (!n->params.serial) { - error_setg(errp, "serial property not set"); - return; + if ((params->num_queues < 1 || params->num_queues > NVME_MAX_QS)) { + error_setg(errp, "nvme: invalid queue configuration"); + return 1; } + + return 0; +} + +static int nvme_init_blk(NvmeCtrl *n, Error **errp) +{ blkconf_blocksizes(&n->conf); if (!blkconf_apply_backend_options(&n->conf, blk_is_read_only(n->conf.blk), - false, errp)) { - return; + false, errp)) { + return 1; } - pci_conf = pci_dev->config; - pci_conf[PCI_INTERRUPT_PIN] = 1; - pci_config_set_prog_interface(pci_dev->config, 0x2); - pci_config_set_class(pci_dev->config, PCI_CLASS_STORAGE_EXPRESS); - pcie_endpoint_cap_init(pci_dev, 0x80); + return 0; +} +static void nvme_init_state(NvmeCtrl *n) +{ n->num_namespaces = 1; n->reg_size = pow2ceil(0x1004 + 2 * (n->params.num_queues + 1) * 4); - n->ns_size = bs_size / (uint64_t)n->num_namespaces; - n->namespaces = g_new0(NvmeNamespace, n->num_namespaces); n->sq = g_new0(NvmeSQueue *, n->params.num_queues); n->cq = g_new0(NvmeCQueue *, n->params.num_queues); +} + +static void nvme_init_cmb(NvmeCtrl *n, PCIDevice *pci_dev) +{ + NVME_CMBLOC_SET_BIR(n->bar.cmbloc, 2); + NVME_CMBLOC_SET_OFST(n->bar.cmbloc, 0); + + NVME_CMBSZ_SET_SQS(n->bar.cmbsz, 1); + NVME_CMBSZ_SET_CQS(n->bar.cmbsz, 1); + NVME_CMBSZ_SET_LISTS(n->bar.cmbsz, 0); + NVME_CMBSZ_SET_RDS(n->bar.cmbsz, 1); + NVME_CMBSZ_SET_WDS(n->bar.cmbsz, 1); + NVME_CMBSZ_SET_SZU(n->bar.cmbsz, 2); + NVME_CMBSZ_SET_SZ(n->bar.cmbsz, n->params.cmb_size_mb); + + n->cmbloc = n->bar.cmbloc; + n->cmbsz = n->bar.cmbsz; + + n->cmbuf = g_malloc0(NVME_CMBSZ_GETSIZE(n->bar.cmbsz)); + memory_region_init_io(&n->ctrl_mem, OBJECT(n), &nvme_cmb_ops, n, + "nvme-cmb", NVME_CMBSZ_GETSIZE(n->bar.cmbsz)); + pci_register_bar(pci_dev, NVME_CMBLOC_BIR(n->bar.cmbloc), + PCI_BASE_ADDRESS_SPACE_MEMORY | PCI_BASE_ADDRESS_MEM_TYPE_64 | + PCI_BASE_ADDRESS_MEM_PREFETCH, &n->ctrl_mem); +} + +static void nvme_init_pci(NvmeCtrl *n, PCIDevice *pci_dev) +{ + uint8_t *pci_conf = pci_dev->config; - memory_region_init_io(&n->iomem, OBJECT(n), &nvme_mmio_ops, n, - "nvme", n->reg_size); + pci_conf[PCI_INTERRUPT_PIN] = 1; + pci_config_set_prog_interface(pci_conf, 0x2); + pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_INTEL); + pci_config_set_device_id(pci_conf, 0x5845); + pci_config_set_class(pci_conf, PCI_CLASS_STORAGE_EXPRESS); + pcie_endpoint_cap_init(pci_dev, 0x80); + + memory_region_init_io(&n->iomem, OBJECT(n), &nvme_mmio_ops, n, "nvme", + n->reg_size); pci_register_bar(pci_dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY | PCI_BASE_ADDRESS_MEM_TYPE_64, &n->iomem); msix_init_exclusive_bar(pci_dev, n->params.num_queues, 4, NULL); + if (n->params.cmb_size_mb) { + nvme_init_cmb(n, pci_dev); + } +} + +static void nvme_init_ctrl(NvmeCtrl *n) +{ + NvmeIdCtrl *id = &n->id_ctrl; + NvmeParams *params = &n->params; + uint8_t *pci_conf = n->parent_obj.config; + id->vid = cpu_to_le16(pci_get_word(pci_conf + PCI_VENDOR_ID)); id->ssvid = cpu_to_le16(pci_get_word(pci_conf + PCI_SUBSYSTEM_VENDOR_ID)); strpadcpy((char *)id->mn, sizeof(id->mn), "QEMU NVMe Ctrl", ' '); strpadcpy((char *)id->fr, sizeof(id->fr), "1.0", ' '); - strpadcpy((char *)id->sn, sizeof(id->sn), n->params.serial, ' '); + strpadcpy((char *)id->sn, sizeof(id->sn), params->serial, ' '); id->rab = 6; id->ieee[0] = 0x00; id->ieee[1] = 0x02; @@ -1430,46 +1471,55 @@ static void nvme_realize(PCIDevice *pci_dev, Error **errp) n->bar.vs = 0x00010201; n->bar.intmc = n->bar.intms = 0; +} - if (n->params.cmb_size_mb) { +static int nvme_init_namespace(NvmeCtrl *n, NvmeNamespace *ns, Error **errp) +{ + int64_t bs_size; + NvmeIdNs *id_ns = &ns->id_ns; + + bs_size = blk_getlength(n->conf.blk); + if (bs_size < 0) { + error_setg_errno(errp, -bs_size, "blk_getlength"); + return 1; + } + + id_ns->lbaf[0].ds = BDRV_SECTOR_BITS; + n->ns_size = bs_size; + + id_ns->ncap = id_ns->nuse = id_ns->nsze = + cpu_to_le64(nvme_ns_nlbas(n, ns)); - NVME_CMBLOC_SET_BIR(n->bar.cmbloc, 2); - NVME_CMBLOC_SET_OFST(n->bar.cmbloc, 0); + return 0; +} - NVME_CMBSZ_SET_SQS(n->bar.cmbsz, 1); - NVME_CMBSZ_SET_CQS(n->bar.cmbsz, 1); - NVME_CMBSZ_SET_LISTS(n->bar.cmbsz, 0); - NVME_CMBSZ_SET_RDS(n->bar.cmbsz, 1); - NVME_CMBSZ_SET_WDS(n->bar.cmbsz, 1); - NVME_CMBSZ_SET_SZU(n->bar.cmbsz, 2); /* MBs */ - NVME_CMBSZ_SET_SZ(n->bar.cmbsz, n->params.cmb_size_mb); +static void nvme_realize(PCIDevice *pci_dev, Error **errp) +{ + NvmeCtrl *n = NVME(pci_dev); + Error *local_err = NULL; + int i; - n->cmbloc = n->bar.cmbloc; - n->cmbsz = n->bar.cmbsz; + if (nvme_check_constraints(n, &local_err)) { + error_propagate_prepend(errp, local_err, "nvme_check_constraints: "); + return; + } - n->cmbuf = g_malloc0(NVME_CMBSZ_GETSIZE(n->bar.cmbsz)); - memory_region_init_io(&n->ctrl_mem, OBJECT(n), &nvme_cmb_ops, n, - "nvme-cmb", NVME_CMBSZ_GETSIZE(n->bar.cmbsz)); - pci_register_bar(pci_dev, NVME_CMBLOC_BIR(n->bar.cmbloc), - PCI_BASE_ADDRESS_SPACE_MEMORY | PCI_BASE_ADDRESS_MEM_TYPE_64 | - PCI_BASE_ADDRESS_MEM_PREFETCH, &n->ctrl_mem); + nvme_init_state(n); + if (nvme_init_blk(n, &local_err)) { + error_propagate_prepend(errp, local_err, "nvme_init_blk: "); + return; } for (i = 0; i < n->num_namespaces; i++) { - NvmeNamespace *ns = &n->namespaces[i]; - NvmeIdNs *id_ns = &ns->id_ns; - id_ns->nsfeat = 0; - id_ns->nlbaf = 0; - id_ns->flbas = 0; - id_ns->mc = 0; - id_ns->dpc = 0; - id_ns->dps = 0; - id_ns->lbaf[0].ds = BDRV_SECTOR_BITS; - id_ns->ncap = id_ns->nuse = id_ns->nsze = - cpu_to_le64(n->ns_size >> - id_ns->lbaf[NVME_ID_NS_FLBAS_INDEX(ns->id_ns.flbas)].ds); + if (nvme_init_namespace(n, &n->namespaces[i], &local_err)) { + error_propagate_prepend(errp, local_err, "nvme_init_namespace: "); + return; + } } + + nvme_init_pci(n, pci_dev); + nvme_init_ctrl(n); } static void nvme_exit(PCIDevice *pci_dev) diff --git a/hw/block/nvme.h b/hw/block/nvme.h index 9957c4a200e2..7c3c07bde887 100644 --- a/hw/block/nvme.h +++ b/hw/block/nvme.h @@ -101,4 +101,26 @@ typedef struct NvmeCtrl { NvmeIdCtrl id_ctrl; } NvmeCtrl; +static inline NvmeLBAF nvme_ns_lbaf(NvmeNamespace *ns) +{ + NvmeIdNs *id_ns = &ns->id_ns; + return id_ns->lbaf[NVME_ID_NS_FLBAS_INDEX(id_ns->flbas)]; +} + +static inline uint8_t nvme_ns_lbads(NvmeNamespace *ns) +{ + return nvme_ns_lbaf(ns).ds; +} + +static inline size_t nvme_ns_lbads_bytes(NvmeNamespace *ns) +{ + return 1 << nvme_ns_lbads(ns); +} + +static inline uint64_t nvme_ns_nlbas(NvmeCtrl *n, NvmeNamespace *ns) +{ + return n->ns_size >> nvme_ns_lbads(ns); +} + + #endif /* HW_NVME_H */