From: Niklas Cassel Date: Mon, 28 Sep 2020 02:35:20 +0000 (+0900) Subject: hw/block/nvme: Add support for active/inactive namespaces X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=ab3909bf2cb1147c368e48fdd6b557eb48ca62b7;p=qemu-nvme.git hw/block/nvme: Add support for active/inactive namespaces In NVMe, a namespace is active if it exists and is attached to the controller. CAP.CSS (together with the I/O Command Set data structure) defines what command sets are supported by the controller. CC.CSS (together with Set Profile) can be set to enable a subset of the available command sets. The namespaces belonging to a disabled command set will not be able to attach to the controller, and will thus be inactive. E.g., if the user sets CC.CSS to Admin Only, NVM namespaces should be marked as inactive. The identify namespace, the identify namespace CSI specific, and the namespace list commands have two different versions, one that only shows active namespaces, and the other version that shows existing namespaces, regardless of whether the namespace is attached or not. Add an attached member to struct NvmeNamespace, and implement the missing CNS commands. The added functionality will also simplify the implementation of namespace management in the future, since namespace management can also attach and detach namespaces. Signed-off-by: Niklas Cassel Signed-off-by: Dmitry Fomichev Signed-off-by: Keith Busch --- diff --git a/hw/block/nvme-ns.h b/hw/block/nvme-ns.h index cca23bc0b3..acdb76f058 100644 --- a/hw/block/nvme-ns.h +++ b/hw/block/nvme-ns.h @@ -22,6 +22,7 @@ typedef struct NvmeNamespaceParams { uint32_t nsid; uint8_t csi; + bool attached; QemuUUID uuid; } NvmeNamespaceParams; diff --git a/hw/block/nvme.c b/hw/block/nvme.c index 0663feaddc..32d1c1edd8 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -1528,7 +1528,8 @@ static uint16_t nvme_identify_ctrl_csi(NvmeCtrl *n, NvmeRequest *req) return NVME_INVALID_FIELD | NVME_DNR; } -static uint16_t nvme_identify_ns(NvmeCtrl *n, NvmeRequest *req) +static uint16_t nvme_identify_ns(NvmeCtrl *n, NvmeRequest *req, + bool only_active) { NvmeNamespace *ns; NvmeIdentify *c = (NvmeIdentify *)&req->cmd; @@ -1545,11 +1546,16 @@ static uint16_t nvme_identify_ns(NvmeCtrl *n, NvmeRequest *req) return nvme_rpt_empty_id_struct(n, req); } + if (only_active && !ns->params.attached) { + return nvme_rpt_empty_id_struct(n, req); + } + return nvme_dma(n, (uint8_t *)&ns->id_ns, sizeof(NvmeIdNs), DMA_DIRECTION_FROM_DEVICE, req); } -static uint16_t nvme_identify_ns_csi(NvmeCtrl *n, NvmeRequest *req) +static uint16_t nvme_identify_ns_csi(NvmeCtrl *n, NvmeRequest *req, + bool only_active) { NvmeNamespace *ns; NvmeIdentify *c = (NvmeIdentify *)&req->cmd; @@ -1566,6 +1572,10 @@ static uint16_t nvme_identify_ns_csi(NvmeCtrl *n, NvmeRequest *req) return nvme_rpt_empty_id_struct(n, req); } + if (only_active && !ns->params.attached) { + return nvme_rpt_empty_id_struct(n, req); + } + if (c->csi == NVME_CSI_NVM) { return nvme_rpt_empty_id_struct(n, req); } @@ -1573,7 +1583,8 @@ static uint16_t nvme_identify_ns_csi(NvmeCtrl *n, NvmeRequest *req) return NVME_INVALID_FIELD | NVME_DNR; } -static uint16_t nvme_identify_nslist(NvmeCtrl *n, NvmeRequest *req) +static uint16_t nvme_identify_nslist(NvmeCtrl *n, NvmeRequest *req, + bool only_active) { NvmeNamespace *ns; NvmeIdentify *c = (NvmeIdentify *)&req->cmd; @@ -1603,6 +1614,9 @@ static uint16_t nvme_identify_nslist(NvmeCtrl *n, NvmeRequest *req) if (ns->params.nsid < min_nsid) { continue; } + if (only_active && !ns->params.attached) { + continue; + } list_ptr[j++] = cpu_to_le32(ns->params.nsid); if (j == data_len / sizeof(uint32_t)) { break; @@ -1612,7 +1626,8 @@ static uint16_t nvme_identify_nslist(NvmeCtrl *n, NvmeRequest *req) return nvme_dma(n, list, data_len, DMA_DIRECTION_FROM_DEVICE, req); } -static uint16_t nvme_identify_nslist_csi(NvmeCtrl *n, NvmeRequest *req) +static uint16_t nvme_identify_nslist_csi(NvmeCtrl *n, NvmeRequest *req, + bool only_active) { NvmeNamespace *ns; NvmeIdentify *c = (NvmeIdentify *)&req->cmd; @@ -1636,6 +1651,9 @@ static uint16_t nvme_identify_nslist_csi(NvmeCtrl *n, NvmeRequest *req) if (ns->params.nsid < min_nsid) { continue; } + if (only_active && !ns->params.attached) { + continue; + } list_ptr[j++] = cpu_to_le32(ns->params.nsid); if (j == data_len / sizeof(uint32_t)) { break; @@ -1705,17 +1723,25 @@ static uint16_t nvme_identify(NvmeCtrl *n, NvmeRequest *req) switch (le32_to_cpu(c->cns)) { case NVME_ID_CNS_NS: - return nvme_identify_ns(n, req); + return nvme_identify_ns(n, req, true); case NVME_ID_CNS_CS_NS: - return nvme_identify_ns_csi(n, req); + return nvme_identify_ns_csi(n, req, true); + case NVME_ID_CNS_NS_PRESENT: + return nvme_identify_ns(n, req, false); + case NVME_ID_CNS_CS_NS_PRESENT: + return nvme_identify_ns_csi(n, req, false); case NVME_ID_CNS_CTRL: return nvme_identify_ctrl(n, req); case NVME_ID_CNS_CS_CTRL: return nvme_identify_ctrl_csi(n, req); case NVME_ID_CNS_NS_ACTIVE_LIST: - return nvme_identify_nslist(n, req); + return nvme_identify_nslist(n, req, true); case NVME_ID_CNS_CS_NS_ACTIVE_LIST: - return nvme_identify_nslist_csi(n, req); + return nvme_identify_nslist_csi(n, req, true); + case NVME_ID_CNS_NS_PRESENT_LIST: + return nvme_identify_nslist(n, req, false); + case NVME_ID_CNS_CS_NS_PRESENT_LIST: + return nvme_identify_nslist_csi(n, req, false); case NVME_ID_CNS_NS_DESCR_LIST: return nvme_identify_ns_descr_list(n, req); case NVME_ID_CNS_IO_COMMAND_SET: @@ -2193,8 +2219,10 @@ static void nvme_clear_ctrl(NvmeCtrl *n) static int nvme_start_ctrl(NvmeCtrl *n) { + NvmeNamespace *ns; uint32_t page_bits = NVME_CC_MPS(n->bar.cc) + 12; uint32_t page_size = 1 << page_bits; + int i; if (unlikely(n->cq[0])) { trace_pci_nvme_err_startfail_cq(); @@ -2285,6 +2313,22 @@ static int nvme_start_ctrl(NvmeCtrl *n) nvme_init_sq(&n->admin_sq, n, n->bar.asq, 0, 0, NVME_AQA_ASQS(n->bar.aqa) + 1); + for (i = 1; i <= n->num_namespaces; i++) { + ns = nvme_ns(n, i); + if (!ns) { + continue; + } + ns->params.attached = false; + switch (ns->params.csi) { + case NVME_CSI_NVM: + if (NVME_CC_CSS(n->bar.cc) == CSS_NVM_ONLY || + NVME_CC_CSS(n->bar.cc) == CSS_CSI) { + ns->params.attached = true; + } + break; + } + } + nvme_set_timestamp(n, 0ULL); QTAILQ_INIT(&n->aer_queue); diff --git a/include/block/nvme.h b/include/block/nvme.h index 934d0c183a..215bc08030 100644 --- a/include/block/nvme.h +++ b/include/block/nvme.h @@ -790,14 +790,18 @@ typedef struct QEMU_PACKED NvmePSD { #define NVME_IDENTIFY_DATA_SIZE 4096 enum NvmeIdCns { - NVME_ID_CNS_NS = 0x00, - NVME_ID_CNS_CTRL = 0x01, - NVME_ID_CNS_NS_ACTIVE_LIST = 0x02, - NVME_ID_CNS_NS_DESCR_LIST = 0x03, - NVME_ID_CNS_CS_NS = 0x05, - NVME_ID_CNS_CS_CTRL = 0x06, - NVME_ID_CNS_CS_NS_ACTIVE_LIST = 0x07, - NVME_ID_CNS_IO_COMMAND_SET = 0x1c, + NVME_ID_CNS_NS = 0x00, + NVME_ID_CNS_CTRL = 0x01, + NVME_ID_CNS_NS_ACTIVE_LIST = 0x02, + NVME_ID_CNS_NS_DESCR_LIST = 0x03, + NVME_ID_CNS_CS_NS = 0x05, + NVME_ID_CNS_CS_CTRL = 0x06, + NVME_ID_CNS_CS_NS_ACTIVE_LIST = 0x07, + NVME_ID_CNS_NS_PRESENT_LIST = 0x10, + NVME_ID_CNS_NS_PRESENT = 0x11, + NVME_ID_CNS_CS_NS_PRESENT_LIST = 0x1a, + NVME_ID_CNS_CS_NS_PRESENT = 0x1b, + NVME_ID_CNS_IO_COMMAND_SET = 0x1c, }; typedef struct QEMU_PACKED NvmeIdCtrl {