* [Qemu-devel] [PULL 6/7] NVMe: Initial commit for new storage interface
2013-06-17 16:31 [Qemu-devel] [PULL 0/7] Block patches Kevin Wolf
` (4 preceding siblings ...)
2013-06-17 16:31 ` [Qemu-devel] [PULL 5/7] curl: Don't set curl options on the handle just before it's going to be deleted Kevin Wolf
@ 2013-06-17 16:31 ` Kevin Wolf
2013-06-17 16:31 ` [Qemu-devel] [PULL 7/7] vmdk: Allow reading variable size descriptor files Kevin Wolf
2013-06-17 21:17 ` [Qemu-devel] [PULL 0/7] Block patches Anthony Liguori
7 siblings, 0 replies; 9+ messages in thread
From: Kevin Wolf @ 2013-06-17 16:31 UTC (permalink / raw)
To: anthony; +Cc: kwolf, qemu-devel
From: Keith Busch <keith.busch@intel.com>
Initial commit for emulated Non-Volatile-Memory Express (NVMe) pci
storage device.
NVMe is an open, industry driven storage specification defining
an optimized register and command set designed to deliver the full
capabilities of non-volatile memory on PCIe SSDs. Further information
may be found on the organizations website at:
http://www.nvmexpress.org/
This commit implements the minimum from the specification to work with
existing drivers.
Cc: Keith Busch <keith.busch@gmail.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
MAINTAINERS | 5 +
default-configs/pci.mak | 1 +
hw/block/Makefile.objs | 1 +
hw/block/nvme.c | 885 +++++++++++++++++++++++++++++++++++++++++++++++
hw/block/nvme.h | 711 +++++++++++++++++++++++++++++++++++++
include/hw/pci/pci_ids.h | 1 +
6 files changed, 1604 insertions(+)
create mode 100644 hw/block/nvme.c
create mode 100644 hw/block/nvme.h
diff --git a/MAINTAINERS b/MAINTAINERS
index 3412b07..a015f68 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -609,6 +609,11 @@ S: Supported
F: hw/char/virtio-serial-bus.c
F: hw/char/virtio-console.c
+nvme
+M: Keith Busch <keith.busch@intel.com>
+S: Supported
+F: hw/block/nvme*
+
Xilinx EDK
M: Peter Crosthwaite <peter.crosthwaite@petalogix.com>
M: Edgar E. Iglesias <edgar.iglesias@gmail.com>
diff --git a/default-configs/pci.mak b/default-configs/pci.mak
index d557eab..91b1e92 100644
--- a/default-configs/pci.mak
+++ b/default-configs/pci.mak
@@ -29,3 +29,4 @@ CONFIG_SERIAL_PCI=y
CONFIG_IPACK=y
CONFIG_WDT_IB6300ESB=y
CONFIG_PCI_TESTDEV=y
+CONFIG_NVME_PCI=y
diff --git a/hw/block/Makefile.objs b/hw/block/Makefile.objs
index e4329a0..25acc67 100644
--- a/hw/block/Makefile.objs
+++ b/hw/block/Makefile.objs
@@ -8,6 +8,7 @@ common-obj-$(CONFIG_XEN_BACKEND) += xen_disk.o
common-obj-$(CONFIG_ECC) += ecc.o
common-obj-$(CONFIG_ONENAND) += onenand.o
common-obj-$(CONFIG_PC_SYSFW) += pc_sysfw.o
+common-obj-$(CONFIG_NVME_PCI) += nvme.o
obj-$(CONFIG_SH4) += tc58128.o
diff --git a/hw/block/nvme.c b/hw/block/nvme.c
new file mode 100644
index 0000000..5db941c
--- /dev/null
+++ b/hw/block/nvme.c
@@ -0,0 +1,885 @@
+/*
+ * QEMU NVM Express Controller
+ *
+ * Copyright (c) 2012, Intel Corporation
+ *
+ * Written by Keith Busch <keith.busch@intel.com>
+ *
+ * This code is licensed under the GNU GPL v2 or later.
+ */
+
+/**
+ * Reference Specs: http://www.nvmexpress.org, 1.1, 1.0e
+ *
+ * http://www.nvmexpress.org/resources/
+ */
+
+/**
+ * Usage: add options:
+ * -drive file=<file>,if=none,id=<drive_id>
+ * -device nvme,drive=<drive_id>,serial=<serial>,id=<id[optional]>
+ */
+
+#include <hw/block/block.h>
+#include <hw/hw.h>
+#include <hw/pci/msix.h>
+#include <hw/pci/pci.h>
+
+#include "nvme.h"
+
+static void nvme_process_sq(void *opaque);
+
+static int nvme_check_sqid(NvmeCtrl *n, uint16_t sqid)
+{
+ return sqid < n->num_queues && n->sq[sqid] != NULL ? 0 : -1;
+}
+
+static int nvme_check_cqid(NvmeCtrl *n, uint16_t cqid)
+{
+ return cqid < n->num_queues && n->cq[cqid] != NULL ? 0 : -1;
+}
+
+static void nvme_inc_cq_tail(NvmeCQueue *cq)
+{
+ cq->tail++;
+ if (cq->tail >= cq->size) {
+ cq->tail = 0;
+ cq->phase = !cq->phase;
+ }
+}
+
+static void nvme_inc_sq_head(NvmeSQueue *sq)
+{
+ sq->head = (sq->head + 1) % sq->size;
+}
+
+static uint8_t nvme_cq_full(NvmeCQueue *cq)
+{
+ return (cq->tail + 1) % cq->size == cq->head;
+}
+
+static uint8_t nvme_sq_empty(NvmeSQueue *sq)
+{
+ return sq->head == sq->tail;
+}
+
+static void nvme_isr_notify(NvmeCtrl *n, NvmeCQueue *cq)
+{
+ if (cq->irq_enabled) {
+ if (msix_enabled(&(n->parent_obj))) {
+ msix_notify(&(n->parent_obj), cq->vector);
+ } else {
+ qemu_irq_pulse(n->parent_obj.irq[0]);
+ }
+ }
+}
+
+static uint16_t nvme_map_prp(QEMUSGList *qsg, uint64_t prp1, uint64_t prp2,
+ uint32_t len, NvmeCtrl *n)
+{
+ hwaddr trans_len = n->page_size - (prp1 % n->page_size);
+ trans_len = MIN(len, trans_len);
+ int num_prps = (len >> n->page_bits) + 1;
+
+ if (!prp1) {
+ return NVME_INVALID_FIELD | NVME_DNR;
+ }
+
+ qemu_sglist_init(qsg, num_prps, pci_dma_context(&n->parent_obj));
+ qemu_sglist_add(qsg, prp1, trans_len);
+ len -= trans_len;
+ if (len) {
+ if (!prp2) {
+ goto unmap;
+ }
+ if (len > n->page_size) {
+ uint64_t prp_list[n->max_prp_ents];
+ uint32_t nents, prp_trans;
+ int i = 0;
+
+ nents = (len + n->page_size - 1) >> n->page_bits;
+ prp_trans = MIN(n->max_prp_ents, nents) * sizeof(uint64_t);
+ pci_dma_read(&n->parent_obj, prp2, (void *)prp_list, prp_trans);
+ while (len != 0) {
+ uint64_t prp_ent = le64_to_cpu(prp_list[i]);
+
+ if (i == n->max_prp_ents - 1 && len > n->page_size) {
+ if (!prp_ent || prp_ent & (n->page_size - 1)) {
+ goto unmap;
+ }
+
+ i = 0;
+ nents = (len + n->page_size - 1) >> n->page_bits;
+ prp_trans = MIN(n->max_prp_ents, nents) * sizeof(uint64_t);
+ pci_dma_read(&n->parent_obj, prp_ent, (void *)prp_list,
+ prp_trans);
+ prp_ent = le64_to_cpu(prp_list[i]);
+ }
+
+ if (!prp_ent || prp_ent & (n->page_size - 1)) {
+ goto unmap;
+ }
+
+ trans_len = MIN(len, n->page_size);
+ qemu_sglist_add(qsg, prp_ent, trans_len);
+ len -= trans_len;
+ i++;
+ }
+ } else {
+ if (prp2 & (n->page_size - 1)) {
+ goto unmap;
+ }
+ qemu_sglist_add(qsg, prp2, len);
+ }
+ }
+ return NVME_SUCCESS;
+
+ unmap:
+ qemu_sglist_destroy(qsg);
+ return NVME_INVALID_FIELD | NVME_DNR;
+}
+
+static uint16_t nvme_dma_read_prp(NvmeCtrl *n, uint8_t *ptr, uint32_t len,
+ uint64_t prp1, uint64_t prp2)
+{
+ QEMUSGList qsg;
+
+ if (nvme_map_prp(&qsg, prp1, prp2, len, n)) {
+ return NVME_INVALID_FIELD | NVME_DNR;
+ }
+ if (dma_buf_read(ptr, len, &qsg)) {
+ qemu_sglist_destroy(&qsg);
+ return NVME_INVALID_FIELD | NVME_DNR;
+ }
+ return NVME_SUCCESS;
+}
+
+static void nvme_post_cqes(void *opaque)
+{
+ NvmeCQueue *cq = opaque;
+ NvmeCtrl *n = cq->ctrl;
+ NvmeRequest *req, *next;
+
+ QTAILQ_FOREACH_SAFE(req, &cq->req_list, entry, next) {
+ NvmeSQueue *sq;
+ hwaddr addr;
+
+ if (nvme_cq_full(cq)) {
+ break;
+ }
+
+ QTAILQ_REMOVE(&cq->req_list, req, entry);
+ sq = req->sq;
+ req->cqe.status = cpu_to_le16((req->status << 1) | cq->phase);
+ req->cqe.sq_id = cpu_to_le16(sq->sqid);
+ req->cqe.sq_head = cpu_to_le16(sq->head);
+ addr = cq->dma_addr + cq->tail * n->cqe_size;
+ nvme_inc_cq_tail(cq);
+ pci_dma_write(&n->parent_obj, addr, (void *)&req->cqe,
+ sizeof(req->cqe));
+ QTAILQ_INSERT_TAIL(&sq->req_list, req, entry);
+ }
+ nvme_isr_notify(n, cq);
+}
+
+static void nvme_enqueue_req_completion(NvmeCQueue *cq, NvmeRequest *req)
+{
+ assert(cq->cqid == req->sq->cqid);
+ QTAILQ_REMOVE(&req->sq->out_req_list, req, entry);
+ QTAILQ_INSERT_TAIL(&cq->req_list, req, entry);
+ qemu_mod_timer(cq->timer, qemu_get_clock_ns(vm_clock) + 500);
+}
+
+static void nvme_rw_cb(void *opaque, int ret)
+{
+ NvmeRequest *req = opaque;
+ NvmeSQueue *sq = req->sq;
+ NvmeCtrl *n = sq->ctrl;
+ NvmeCQueue *cq = n->cq[sq->cqid];
+
+ bdrv_acct_done(n->conf.bs, &req->acct);
+ if (!ret) {
+ req->status = NVME_SUCCESS;
+ } else {
+ req->status = NVME_INTERNAL_DEV_ERROR;
+ }
+
+ qemu_sglist_destroy(&req->qsg);
+ nvme_enqueue_req_completion(cq, req);
+}
+
+static uint16_t nvme_rw(NvmeCtrl *n, NvmeNamespace *ns, NvmeCmd *cmd,
+ NvmeRequest *req)
+{
+ NvmeRwCmd *rw = (NvmeRwCmd *)cmd;
+ uint32_t nlb = le32_to_cpu(rw->nlb) + 1;
+ uint64_t slba = le64_to_cpu(rw->slba);
+ uint64_t prp1 = le64_to_cpu(rw->prp1);
+ uint64_t prp2 = le64_to_cpu(rw->prp2);
+
+ uint8_t lba_index = NVME_ID_NS_FLBAS_INDEX(ns->id_ns.flbas);
+ uint8_t data_shift = ns->id_ns.lbaf[lba_index].ds;
+ uint64_t data_size = nlb << data_shift;
+ uint64_t aio_slba = slba << (data_shift - BDRV_SECTOR_BITS);
+ int is_write = rw->opcode == NVME_CMD_WRITE ? 1 : 0;
+
+ if ((slba + nlb) > ns->id_ns.nsze) {
+ return NVME_LBA_RANGE | NVME_DNR;
+ }
+ if (nvme_map_prp(&req->qsg, prp1, prp2, data_size, n)) {
+ return NVME_INVALID_FIELD | NVME_DNR;
+ }
+ assert((nlb << data_shift) == req->qsg.size);
+
+ dma_acct_start(n->conf.bs, &req->acct, &req->qsg, is_write ?
+ BDRV_ACCT_WRITE : BDRV_ACCT_READ);
+ req->aiocb = is_write ?
+ dma_bdrv_write(n->conf.bs, &req->qsg, aio_slba, nvme_rw_cb, req) :
+ dma_bdrv_read(n->conf.bs, &req->qsg, aio_slba, nvme_rw_cb, req);
+
+ return NVME_NO_COMPLETE;
+}
+
+static uint16_t nvme_io_cmd(NvmeCtrl *n, NvmeCmd *cmd, NvmeRequest *req)
+{
+ NvmeNamespace *ns;
+ uint32_t nsid = le32_to_cpu(cmd->nsid);
+
+ if (nsid == 0 || nsid > n->num_namespaces) {
+ return NVME_INVALID_NSID | NVME_DNR;
+ }
+
+ ns = &n->namespaces[nsid - 1];
+ switch (cmd->opcode) {
+ case NVME_CMD_FLUSH:
+ return NVME_SUCCESS;
+ case NVME_CMD_WRITE:
+ case NVME_CMD_READ:
+ return nvme_rw(n, ns, cmd, req);
+ default:
+ return NVME_INVALID_OPCODE | NVME_DNR;
+ }
+}
+
+static void nvme_free_sq(NvmeSQueue *sq, NvmeCtrl *n)
+{
+ n->sq[sq->sqid] = NULL;
+ qemu_del_timer(sq->timer);
+ qemu_free_timer(sq->timer);
+ g_free(sq->io_req);
+ if (sq->sqid) {
+ g_free(sq);
+ }
+}
+
+static uint16_t nvme_del_sq(NvmeCtrl *n, NvmeCmd *cmd)
+{
+ NvmeDeleteQ *c = (NvmeDeleteQ *)cmd;
+ NvmeRequest *req, *next;
+ NvmeSQueue *sq;
+ NvmeCQueue *cq;
+ uint16_t qid = le16_to_cpu(c->qid);
+
+ if (!qid || nvme_check_sqid(n, qid)) {
+ return NVME_INVALID_QID | NVME_DNR;
+ }
+
+ sq = n->sq[qid];
+ while (!QTAILQ_EMPTY(&sq->out_req_list)) {
+ req = QTAILQ_FIRST(&sq->out_req_list);
+ assert(req->aiocb);
+ bdrv_aio_cancel(req->aiocb);
+ }
+ if (!nvme_check_cqid(n, sq->cqid)) {
+ cq = n->cq[sq->cqid];
+ QTAILQ_REMOVE(&cq->sq_list, sq, entry);
+
+ nvme_post_cqes(cq);
+ QTAILQ_FOREACH_SAFE(req, &cq->req_list, entry, next) {
+ if (req->sq == sq) {
+ QTAILQ_REMOVE(&cq->req_list, req, entry);
+ QTAILQ_INSERT_TAIL(&sq->req_list, req, entry);
+ }
+ }
+ }
+
+ nvme_free_sq(sq, n);
+ return NVME_SUCCESS;
+}
+
+static void nvme_init_sq(NvmeSQueue *sq, NvmeCtrl *n, uint64_t dma_addr,
+ uint16_t sqid, uint16_t cqid, uint16_t size)
+{
+ int i;
+ NvmeCQueue *cq;
+
+ sq->ctrl = n;
+ sq->dma_addr = dma_addr;
+ sq->sqid = sqid;
+ sq->size = size;
+ sq->cqid = cqid;
+ sq->head = sq->tail = 0;
+ sq->io_req = g_malloc(sq->size * sizeof(*sq->io_req));
+
+ QTAILQ_INIT(&sq->req_list);
+ QTAILQ_INIT(&sq->out_req_list);
+ for (i = 0; i < sq->size; i++) {
+ sq->io_req[i].sq = sq;
+ QTAILQ_INSERT_TAIL(&(sq->req_list), &sq->io_req[i], entry);
+ }
+ sq->timer = qemu_new_timer_ns(vm_clock, nvme_process_sq, sq);
+
+ assert(n->cq[cqid]);
+ cq = n->cq[cqid];
+ QTAILQ_INSERT_TAIL(&(cq->sq_list), sq, entry);
+ n->sq[sqid] = sq;
+}
+
+static uint16_t nvme_create_sq(NvmeCtrl *n, NvmeCmd *cmd)
+{
+ NvmeSQueue *sq;
+ NvmeCreateSq *c = (NvmeCreateSq *)cmd;
+
+ uint16_t cqid = le16_to_cpu(c->cqid);
+ uint16_t sqid = le16_to_cpu(c->sqid);
+ uint16_t qsize = le16_to_cpu(c->qsize);
+ uint16_t qflags = le16_to_cpu(c->sq_flags);
+ uint64_t prp1 = le64_to_cpu(c->prp1);
+
+ if (!cqid || nvme_check_cqid(n, cqid)) {
+ return NVME_INVALID_CQID | NVME_DNR;
+ }
+ if (!sqid || (sqid && !nvme_check_sqid(n, sqid))) {
+ return NVME_INVALID_QID | NVME_DNR;
+ }
+ if (!qsize || qsize > NVME_CAP_MQES(n->bar.cap)) {
+ return NVME_MAX_QSIZE_EXCEEDED | NVME_DNR;
+ }
+ if (!prp1 || prp1 & (n->page_size - 1)) {
+ return NVME_INVALID_FIELD | NVME_DNR;
+ }
+ if (!(NVME_SQ_FLAGS_PC(qflags))) {
+ return NVME_INVALID_FIELD | NVME_DNR;
+ }
+ sq = g_malloc0(sizeof(*sq));
+ nvme_init_sq(sq, n, prp1, sqid, cqid, qsize + 1);
+ return NVME_SUCCESS;
+}
+
+static void nvme_free_cq(NvmeCQueue *cq, NvmeCtrl *n)
+{
+ n->cq[cq->cqid] = NULL;
+ qemu_del_timer(cq->timer);
+ qemu_free_timer(cq->timer);
+ msix_vector_unuse(&n->parent_obj, cq->vector);
+ if (cq->cqid) {
+ g_free(cq);
+ }
+}
+
+static uint16_t nvme_del_cq(NvmeCtrl *n, NvmeCmd *cmd)
+{
+ NvmeDeleteQ *c = (NvmeDeleteQ *)cmd;
+ NvmeCQueue *cq;
+ uint16_t qid = le16_to_cpu(c->qid);
+
+ if (!qid || nvme_check_cqid(n, qid)) {
+ return NVME_INVALID_CQID | NVME_DNR;
+ }
+
+ cq = n->cq[qid];
+ if (!QTAILQ_EMPTY(&cq->sq_list)) {
+ return NVME_INVALID_QUEUE_DEL;
+ }
+ nvme_free_cq(cq, n);
+ return NVME_SUCCESS;
+}
+
+static void nvme_init_cq(NvmeCQueue *cq, NvmeCtrl *n, uint64_t dma_addr,
+ uint16_t cqid, uint16_t vector, uint16_t size, uint16_t irq_enabled)
+{
+ cq->ctrl = n;
+ cq->cqid = cqid;
+ cq->size = size;
+ cq->dma_addr = dma_addr;
+ cq->phase = 1;
+ cq->irq_enabled = irq_enabled;
+ cq->vector = vector;
+ cq->head = cq->tail = 0;
+ QTAILQ_INIT(&cq->req_list);
+ QTAILQ_INIT(&cq->sq_list);
+ msix_vector_use(&n->parent_obj, cq->vector);
+ n->cq[cqid] = cq;
+ cq->timer = qemu_new_timer_ns(vm_clock, nvme_post_cqes, cq);
+}
+
+static uint16_t nvme_create_cq(NvmeCtrl *n, NvmeCmd *cmd)
+{
+ NvmeCQueue *cq;
+ NvmeCreateCq *c = (NvmeCreateCq *)cmd;
+ uint16_t cqid = le16_to_cpu(c->cqid);
+ uint16_t vector = le16_to_cpu(c->irq_vector);
+ uint16_t qsize = le16_to_cpu(c->qsize);
+ uint16_t qflags = le16_to_cpu(c->cq_flags);
+ uint64_t prp1 = le64_to_cpu(c->prp1);
+
+ if (!cqid || (cqid && !nvme_check_cqid(n, cqid))) {
+ return NVME_INVALID_CQID | NVME_DNR;
+ }
+ if (!qsize || qsize > NVME_CAP_MQES(n->bar.cap)) {
+ return NVME_MAX_QSIZE_EXCEEDED | NVME_DNR;
+ }
+ if (!prp1) {
+ return NVME_INVALID_FIELD | NVME_DNR;
+ }
+ if (vector > n->num_queues) {
+ return NVME_INVALID_IRQ_VECTOR | NVME_DNR;
+ }
+ if (!(NVME_CQ_FLAGS_PC(qflags))) {
+ return NVME_INVALID_FIELD | NVME_DNR;
+ }
+
+ cq = g_malloc0(sizeof(*cq));
+ nvme_init_cq(cq, n, prp1, cqid, vector, qsize + 1,
+ NVME_CQ_FLAGS_IEN(qflags));
+ return NVME_SUCCESS;
+}
+
+static uint16_t nvme_identify(NvmeCtrl *n, NvmeCmd *cmd)
+{
+ NvmeNamespace *ns;
+ NvmeIdentify *c = (NvmeIdentify *)cmd;
+ uint32_t cns = le32_to_cpu(c->cns);
+ uint32_t nsid = le32_to_cpu(c->nsid);
+ uint64_t prp1 = le64_to_cpu(c->prp1);
+ uint64_t prp2 = le64_to_cpu(c->prp2);
+
+ if (cns) {
+ return nvme_dma_read_prp(n, (uint8_t *)&n->id_ctrl, sizeof(n->id_ctrl),
+ prp1, prp2);
+ }
+ if (nsid == 0 || nsid > n->num_namespaces) {
+ return NVME_INVALID_NSID | NVME_DNR;
+ }
+
+ ns = &n->namespaces[nsid - 1];
+ return nvme_dma_read_prp(n, (uint8_t *)&ns->id_ns, sizeof(ns->id_ns),
+ prp1, prp2);
+}
+
+static uint16_t nvme_get_feature(NvmeCtrl *n, NvmeCmd *cmd, NvmeRequest *req)
+{
+ uint32_t dw10 = le32_to_cpu(cmd->cdw10);
+
+ switch (dw10) {
+ case NVME_NUMBER_OF_QUEUES:
+ req->cqe.result = cpu_to_le32(n->num_queues);
+ break;
+ default:
+ return NVME_INVALID_FIELD | NVME_DNR;
+ }
+ return NVME_SUCCESS;
+}
+
+static uint16_t nvme_set_feature(NvmeCtrl *n, NvmeCmd *cmd, NvmeRequest *req)
+{
+ uint32_t dw10 = le32_to_cpu(cmd->cdw10);
+
+ switch (dw10) {
+ case NVME_NUMBER_OF_QUEUES:
+ req->cqe.result = cpu_to_le32(n->num_queues);
+ break;
+ default:
+ return NVME_INVALID_FIELD | NVME_DNR;
+ }
+ return NVME_SUCCESS;
+}
+
+static uint16_t nvme_admin_cmd(NvmeCtrl *n, NvmeCmd *cmd, NvmeRequest *req)
+{
+ switch (cmd->opcode) {
+ case NVME_ADM_CMD_DELETE_SQ:
+ return nvme_del_sq(n, cmd);
+ case NVME_ADM_CMD_CREATE_SQ:
+ return nvme_create_sq(n, cmd);
+ case NVME_ADM_CMD_DELETE_CQ:
+ return nvme_del_cq(n, cmd);
+ case NVME_ADM_CMD_CREATE_CQ:
+ return nvme_create_cq(n, cmd);
+ case NVME_ADM_CMD_IDENTIFY:
+ return nvme_identify(n, cmd);
+ case NVME_ADM_CMD_SET_FEATURES:
+ return nvme_set_feature(n, cmd, req);
+ case NVME_ADM_CMD_GET_FEATURES:
+ return nvme_get_feature(n, cmd, req);
+ default:
+ return NVME_INVALID_OPCODE | NVME_DNR;
+ }
+}
+
+static void nvme_process_sq(void *opaque)
+{
+ NvmeSQueue *sq = opaque;
+ NvmeCtrl *n = sq->ctrl;
+ NvmeCQueue *cq = n->cq[sq->cqid];
+
+ uint16_t status;
+ hwaddr addr;
+ NvmeCmd cmd;
+ NvmeRequest *req;
+
+ while (!(nvme_sq_empty(sq) || QTAILQ_EMPTY(&sq->req_list))) {
+ addr = sq->dma_addr + sq->head * n->sqe_size;
+ pci_dma_read(&n->parent_obj, addr, (void *)&cmd, sizeof(cmd));
+ nvme_inc_sq_head(sq);
+
+ req = QTAILQ_FIRST(&sq->req_list);
+ QTAILQ_REMOVE(&sq->req_list, req, entry);
+ QTAILQ_INSERT_TAIL(&sq->out_req_list, req, entry);
+ memset(&req->cqe, 0, sizeof(req->cqe));
+ req->cqe.cid = cmd.cid;
+
+ status = sq->sqid ? nvme_io_cmd(n, &cmd, req) :
+ nvme_admin_cmd(n, &cmd, req);
+ if (status != NVME_NO_COMPLETE) {
+ req->status = status;
+ nvme_enqueue_req_completion(cq, req);
+ }
+ }
+}
+
+static void nvme_clear_ctrl(NvmeCtrl *n)
+{
+ int i;
+
+ for (i = 0; i < n->num_queues; i++) {
+ if (n->sq[i] != NULL) {
+ nvme_free_sq(n->sq[i], n);
+ }
+ }
+ for (i = 0; i < n->num_queues; i++) {
+ if (n->cq[i] != NULL) {
+ nvme_free_cq(n->cq[i], n);
+ }
+ }
+
+ bdrv_flush(n->conf.bs);
+ n->bar.cc = 0;
+}
+
+static int nvme_start_ctrl(NvmeCtrl *n)
+{
+ uint32_t page_bits = NVME_CC_MPS(n->bar.cc) + 12;
+ uint32_t page_size = 1 << page_bits;
+
+ if (n->cq[0] || n->sq[0] || !n->bar.asq || !n->bar.acq ||
+ n->bar.asq & (page_size - 1) || n->bar.acq & (page_size - 1) ||
+ NVME_CC_MPS(n->bar.cc) < NVME_CAP_MPSMIN(n->bar.cap) ||
+ NVME_CC_MPS(n->bar.cc) > NVME_CAP_MPSMAX(n->bar.cap) ||
+ NVME_CC_IOCQES(n->bar.cc) < NVME_CTRL_CQES_MIN(n->id_ctrl.cqes) ||
+ NVME_CC_IOCQES(n->bar.cc) > NVME_CTRL_CQES_MAX(n->id_ctrl.cqes) ||
+ NVME_CC_IOSQES(n->bar.cc) < NVME_CTRL_SQES_MIN(n->id_ctrl.sqes) ||
+ NVME_CC_IOSQES(n->bar.cc) > NVME_CTRL_SQES_MAX(n->id_ctrl.sqes) ||
+ !NVME_AQA_ASQS(n->bar.aqa) || NVME_AQA_ASQS(n->bar.aqa) > 4095 ||
+ !NVME_AQA_ACQS(n->bar.aqa) || NVME_AQA_ACQS(n->bar.aqa) > 4095) {
+ return -1;
+ }
+
+ n->page_bits = page_bits;
+ n->page_size = page_size;
+ n->max_prp_ents = n->page_size / sizeof(uint64_t);
+ n->cqe_size = 1 << NVME_CC_IOCQES(n->bar.cc);
+ n->sqe_size = 1 << NVME_CC_IOSQES(n->bar.cc);
+ nvme_init_cq(&n->admin_cq, n, n->bar.acq, 0, 0,
+ NVME_AQA_ACQS(n->bar.aqa) + 1, 1);
+ nvme_init_sq(&n->admin_sq, n, n->bar.asq, 0, 0,
+ NVME_AQA_ASQS(n->bar.aqa) + 1);
+
+ return 0;
+}
+
+static void nvme_write_bar(NvmeCtrl *n, hwaddr offset, uint64_t data,
+ unsigned size)
+{
+ switch (offset) {
+ case 0xc:
+ n->bar.intms |= data & 0xffffffff;
+ n->bar.intmc = n->bar.intms;
+ break;
+ case 0x10:
+ n->bar.intms &= ~(data & 0xffffffff);
+ n->bar.intmc = n->bar.intms;
+ break;
+ case 0x14:
+ if (NVME_CC_EN(data) && !NVME_CC_EN(n->bar.cc)) {
+ n->bar.cc = data;
+ if (nvme_start_ctrl(n)) {
+ n->bar.csts = NVME_CSTS_FAILED;
+ } else {
+ n->bar.csts = NVME_CSTS_READY;
+ }
+ } else if (!NVME_CC_EN(data) && NVME_CC_EN(n->bar.cc)) {
+ nvme_clear_ctrl(n);
+ n->bar.csts &= ~NVME_CSTS_READY;
+ }
+ if (NVME_CC_SHN(data) && !(NVME_CC_SHN(n->bar.cc))) {
+ nvme_clear_ctrl(n);
+ n->bar.cc = data;
+ n->bar.csts |= NVME_CSTS_SHST_COMPLETE;
+ } else if (!NVME_CC_SHN(data) && NVME_CC_SHN(n->bar.cc)) {
+ n->bar.csts &= ~NVME_CSTS_SHST_COMPLETE;
+ n->bar.cc = data;
+ }
+ break;
+ case 0x24:
+ n->bar.aqa = data & 0xffffffff;
+ break;
+ case 0x28:
+ n->bar.asq = data;
+ break;
+ case 0x2c:
+ n->bar.asq |= data << 32;
+ break;
+ case 0x30:
+ n->bar.acq = data;
+ break;
+ case 0x34:
+ n->bar.acq |= data << 32;
+ break;
+ default:
+ break;
+ }
+}
+
+static uint64_t nvme_mmio_read(void *opaque, hwaddr addr, unsigned size)
+{
+ NvmeCtrl *n = (NvmeCtrl *)opaque;
+ uint8_t *ptr = (uint8_t *)&n->bar;
+ uint64_t val = 0;
+
+ if (addr < sizeof(n->bar)) {
+ memcpy(&val, ptr + addr, size);
+ }
+ return val;
+}
+
+static void nvme_process_db(NvmeCtrl *n, hwaddr addr, int val)
+{
+ uint32_t qid;
+
+ if (addr & ((1 << 2) - 1)) {
+ return;
+ }
+
+ if (((addr - 0x1000) >> 2) & 1) {
+ uint16_t new_head = val & 0xffff;
+ int start_sqs;
+ NvmeCQueue *cq;
+
+ qid = (addr - (0x1000 + (1 << 2))) >> 3;
+ if (nvme_check_cqid(n, qid)) {
+ return;
+ }
+
+ cq = n->cq[qid];
+ if (new_head >= cq->size) {
+ return;
+ }
+
+ start_sqs = nvme_cq_full(cq) ? 1 : 0;
+ cq->head = new_head;
+ if (start_sqs) {
+ NvmeSQueue *sq;
+ QTAILQ_FOREACH(sq, &cq->sq_list, entry) {
+ qemu_mod_timer(sq->timer, qemu_get_clock_ns(vm_clock) + 500);
+ }
+ qemu_mod_timer(cq->timer, qemu_get_clock_ns(vm_clock) + 500);
+ }
+
+ if (cq->tail != cq->head) {
+ nvme_isr_notify(n, cq);
+ }
+ } else {
+ uint16_t new_tail = val & 0xffff;
+ NvmeSQueue *sq;
+
+ qid = (addr - 0x1000) >> 3;
+ if (nvme_check_sqid(n, qid)) {
+ return;
+ }
+
+ sq = n->sq[qid];
+ if (new_tail >= sq->size) {
+ return;
+ }
+
+ sq->tail = new_tail;
+ qemu_mod_timer(sq->timer, qemu_get_clock_ns(vm_clock) + 500);
+ }
+}
+
+static void nvme_mmio_write(void *opaque, hwaddr addr, uint64_t data,
+ unsigned size)
+{
+ NvmeCtrl *n = (NvmeCtrl *)opaque;
+ if (addr < sizeof(n->bar)) {
+ nvme_write_bar(n, addr, data, size);
+ } else if (addr >= 0x1000) {
+ nvme_process_db(n, addr, data);
+ }
+}
+
+static const MemoryRegionOps nvme_mmio_ops = {
+ .read = nvme_mmio_read,
+ .write = nvme_mmio_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ .impl = {
+ .min_access_size = 2,
+ .max_access_size = 8,
+ },
+};
+
+static int nvme_init(PCIDevice *pci_dev)
+{
+ NvmeCtrl *n = NVME(pci_dev);
+ NvmeIdCtrl *id = &n->id_ctrl;
+
+ int i;
+ int64_t bs_size;
+ uint8_t *pci_conf;
+
+ if (!(n->conf.bs)) {
+ return -1;
+ }
+
+ bs_size = bdrv_getlength(n->conf.bs);
+ if (bs_size <= 0) {
+ return -1;
+ }
+
+ blkconf_serial(&n->conf, &n->serial);
+ if (!n->serial) {
+ 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(&n->parent_obj, 0x80);
+
+ n->num_namespaces = 1;
+ n->num_queues = 64;
+ n->reg_size = 1 << qemu_fls(0x1004 + 2 * (n->num_queues + 1) * 4);
+ n->ns_size = bs_size / (uint64_t)n->num_namespaces;
+
+ n->namespaces = g_malloc0(sizeof(*n->namespaces)*n->num_namespaces);
+ n->sq = g_malloc0(sizeof(*n->sq)*n->num_queues);
+ n->cq = g_malloc0(sizeof(*n->cq)*n->num_queues);
+
+ memory_region_init_io(&n->iomem, &nvme_mmio_ops, n, "nvme", n->reg_size);
+ pci_register_bar(&n->parent_obj, 0,
+ PCI_BASE_ADDRESS_SPACE_MEMORY | PCI_BASE_ADDRESS_MEM_TYPE_64,
+ &n->iomem);
+ msix_init_exclusive_bar(&n->parent_obj, n->num_queues, 4);
+
+ 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->serial, ' ');
+ id->rab = 6;
+ id->ieee[0] = 0x00;
+ id->ieee[1] = 0x02;
+ id->ieee[2] = 0xb3;
+ id->oacs = cpu_to_le16(0);
+ id->frmw = 7 << 1;
+ id->lpa = 1 << 0;
+ id->sqes = (0x6 << 4) | 0x6;
+ id->cqes = (0x4 << 4) | 0x4;
+ id->nn = cpu_to_le32(n->num_namespaces);
+ id->psd[0].mp = cpu_to_le16(0x9c4);
+ id->psd[0].enlat = cpu_to_le32(0x10);
+ id->psd[0].exlat = cpu_to_le32(0x4);
+
+ n->bar.cap = 0;
+ NVME_CAP_SET_MQES(n->bar.cap, 0x7ff);
+ NVME_CAP_SET_CQR(n->bar.cap, 1);
+ NVME_CAP_SET_AMS(n->bar.cap, 1);
+ NVME_CAP_SET_TO(n->bar.cap, 0xf);
+ NVME_CAP_SET_CSS(n->bar.cap, 1);
+
+ n->bar.vs = 0x00010001;
+ n->bar.intmc = n->bar.intms = 0;
+
+ 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);
+ }
+ return 0;
+}
+
+static void nvme_exit(PCIDevice *pci_dev)
+{
+ NvmeCtrl *n = NVME(pci_dev);
+
+ nvme_clear_ctrl(n);
+ g_free(n->namespaces);
+ g_free(n->cq);
+ g_free(n->sq);
+ msix_uninit_exclusive_bar(pci_dev);
+ memory_region_destroy(&n->iomem);
+}
+
+static Property nvme_props[] = {
+ DEFINE_BLOCK_PROPERTIES(NvmeCtrl, conf),
+ DEFINE_PROP_STRING("serial", NvmeCtrl, serial),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static const VMStateDescription nvme_vmstate = {
+ .name = "nvme",
+ .unmigratable = 1,
+};
+
+static void nvme_class_init(ObjectClass *oc, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(oc);
+ PCIDeviceClass *pc = PCI_DEVICE_CLASS(oc);
+
+ pc->init = nvme_init;
+ pc->exit = nvme_exit;
+ pc->class_id = PCI_CLASS_STORAGE_EXPRESS;
+ pc->vendor_id = PCI_VENDOR_ID_INTEL;
+ pc->device_id = 0x5845;
+ pc->revision = 1;
+ pc->is_express = 1;
+
+ dc->desc = "Non-Volatile Memory Express";
+ dc->props = nvme_props;
+ dc->vmsd = &nvme_vmstate;
+}
+
+static const TypeInfo nvme_info = {
+ .name = "nvme",
+ .parent = TYPE_PCI_DEVICE,
+ .instance_size = sizeof(NvmeCtrl),
+ .class_init = nvme_class_init,
+};
+
+static void nvme_register_types(void)
+{
+ type_register_static(&nvme_info);
+}
+
+type_init(nvme_register_types)
diff --git a/hw/block/nvme.h b/hw/block/nvme.h
new file mode 100644
index 0000000..bd8fc3e
--- /dev/null
+++ b/hw/block/nvme.h
@@ -0,0 +1,711 @@
+#ifndef HW_NVME_H
+#define HW_NVME_H
+
+typedef struct NvmeBar {
+ uint64_t cap;
+ uint32_t vs;
+ uint32_t intms;
+ uint32_t intmc;
+ uint32_t cc;
+ uint32_t rsvd1;
+ uint32_t csts;
+ uint32_t nssrc;
+ uint32_t aqa;
+ uint64_t asq;
+ uint64_t acq;
+} NvmeBar;
+
+enum NvmeCapShift {
+ CAP_MQES_SHIFT = 0,
+ CAP_CQR_SHIFT = 16,
+ CAP_AMS_SHIFT = 17,
+ CAP_TO_SHIFT = 24,
+ CAP_DSTRD_SHIFT = 32,
+ CAP_NSSRS_SHIFT = 33,
+ CAP_CSS_SHIFT = 37,
+ CAP_MPSMIN_SHIFT = 48,
+ CAP_MPSMAX_SHIFT = 52,
+};
+
+enum NvmeCapMask {
+ CAP_MQES_MASK = 0xffff,
+ CAP_CQR_MASK = 0x1,
+ CAP_AMS_MASK = 0x3,
+ CAP_TO_MASK = 0xff,
+ CAP_DSTRD_MASK = 0xf,
+ CAP_NSSRS_MASK = 0x1,
+ CAP_CSS_MASK = 0xff,
+ CAP_MPSMIN_MASK = 0xf,
+ CAP_MPSMAX_MASK = 0xf,
+};
+
+#define NVME_CAP_MQES(cap) (((cap) >> CAP_MQES_SHIFT) & CAP_MQES_MASK)
+#define NVME_CAP_CQR(cap) (((cap) >> CAP_CQR_SHIFT) & CAP_CQR_MASK)
+#define NVME_CAP_AMS(cap) (((cap) >> CAP_AMS_SHIFT) & CAP_AMS_MASK)
+#define NVME_CAP_TO(cap) (((cap) >> CAP_TO_SHIFT) & CAP_TO_MASK)
+#define NVME_CAP_DSTRD(cap) (((cap) >> CAP_DSTRD_SHIFT) & CAP_DSTRD_MASK)
+#define NVME_CAP_NSSRS(cap) (((cap) >> CAP_NSSRS_SHIFT) & CAP_NSSRS_MASK)
+#define NVME_CAP_CSS(cap) (((cap) >> CAP_CSS_SHIFT) & CAP_CSS_MASK)
+#define NVME_CAP_MPSMIN(cap)(((cap) >> CAP_MPSMIN_SHIFT) & CAP_MPSMIN_MASK)
+#define NVME_CAP_MPSMAX(cap)(((cap) >> CAP_MPSMAX_SHIFT) & CAP_MPSMAX_MASK)
+
+#define NVME_CAP_SET_MQES(cap, val) (cap |= (uint64_t)(val & CAP_MQES_MASK) \
+ << CAP_MQES_SHIFT)
+#define NVME_CAP_SET_CQR(cap, val) (cap |= (uint64_t)(val & CAP_CQR_MASK) \
+ << CAP_CQR_SHIFT)
+#define NVME_CAP_SET_AMS(cap, val) (cap |= (uint64_t)(val & CAP_AMS_MASK) \
+ << CAP_AMS_SHIFT)
+#define NVME_CAP_SET_TO(cap, val) (cap |= (uint64_t)(val & CAP_TO_MASK) \
+ << CAP_TO_SHIFT)
+#define NVME_CAP_SET_DSTRD(cap, val) (cap |= (uint64_t)(val & CAP_DSTRD_MASK) \
+ << CAP_DSTRD_SHIFT)
+#define NVME_CAP_SET_NSSRS(cap, val) (cap |= (uint64_t)(val & CAP_NSSRS_MASK) \
+ << CAP_NSSRS_SHIFT)
+#define NVME_CAP_SET_CSS(cap, val) (cap |= (uint64_t)(val & CAP_CSS_MASK) \
+ << CAP_CSS_SHIFT)
+#define NVME_CAP_SET_MPSMIN(cap, val) (cap |= (uint64_t)(val & CAP_MPSMIN_MASK)\
+ << CAP_MPSMIN_SHIFT)
+#define NVME_CAP_SET_MPSMAX(cap, val) (cap |= (uint64_t)(val & CAP_MPSMAX_MASK)\
+ << CAP_MPSMAX_SHIFT)
+
+enum NvmeCcShift {
+ CC_EN_SHIFT = 0,
+ CC_CSS_SHIFT = 4,
+ CC_MPS_SHIFT = 7,
+ CC_AMS_SHIFT = 11,
+ CC_SHN_SHIFT = 14,
+ CC_IOSQES_SHIFT = 16,
+ CC_IOCQES_SHIFT = 20,
+};
+
+enum NvmeCcMask {
+ CC_EN_MASK = 0x1,
+ CC_CSS_MASK = 0x7,
+ CC_MPS_MASK = 0xf,
+ CC_AMS_MASK = 0x7,
+ CC_SHN_MASK = 0x3,
+ CC_IOSQES_MASK = 0xf,
+ CC_IOCQES_MASK = 0xf,
+};
+
+#define NVME_CC_EN(cc) ((cc >> CC_EN_SHIFT) & CC_EN_MASK)
+#define NVME_CC_CSS(cc) ((cc >> CC_CSS_SHIFT) & CC_CSS_MASK)
+#define NVME_CC_MPS(cc) ((cc >> CC_MPS_SHIFT) & CC_MPS_MASK)
+#define NVME_CC_AMS(cc) ((cc >> CC_AMS_SHIFT) & CC_AMS_MASK)
+#define NVME_CC_SHN(cc) ((cc >> CC_SHN_SHIFT) & CC_SHN_MASK)
+#define NVME_CC_IOSQES(cc) ((cc >> CC_IOSQES_SHIFT) & CC_IOSQES_MASK)
+#define NVME_CC_IOCQES(cc) ((cc >> CC_IOCQES_SHIFT) & CC_IOCQES_MASK)
+
+enum NvmeCstsShift {
+ CSTS_RDY_SHIFT = 0,
+ CSTS_CFS_SHIFT = 1,
+ CSTS_SHST_SHIFT = 2,
+ CSTS_NSSRO_SHIFT = 4,
+};
+
+enum NvmeCstsMask {
+ CSTS_RDY_MASK = 0x1,
+ CSTS_CFS_MASK = 0x1,
+ CSTS_SHST_MASK = 0x3,
+ CSTS_NSSRO_MASK = 0x1,
+};
+
+enum NvmeCsts {
+ NVME_CSTS_READY = 1 << CSTS_RDY_SHIFT,
+ NVME_CSTS_FAILED = 1 << CSTS_CFS_SHIFT,
+ NVME_CSTS_SHST_NORMAL = 0 << CSTS_SHST_SHIFT,
+ NVME_CSTS_SHST_PROGRESS = 1 << CSTS_SHST_SHIFT,
+ NVME_CSTS_SHST_COMPLETE = 2 << CSTS_SHST_SHIFT,
+ NVME_CSTS_NSSRO = 1 << CSTS_NSSRO_SHIFT,
+};
+
+#define NVME_CSTS_RDY(csts) ((csts >> CSTS_RDY_SHIFT) & CSTS_RDY_MASK)
+#define NVME_CSTS_CFS(csts) ((csts >> CSTS_CFS_SHIFT) & CSTS_CFS_MASK)
+#define NVME_CSTS_SHST(csts) ((csts >> CSTS_SHST_SHIFT) & CSTS_SHST_MASK)
+#define NVME_CSTS_NSSRO(csts) ((csts >> CSTS_NSSRO_SHIFT) & CSTS_NSSRO_MASK)
+
+enum NvmeAqaShift {
+ AQA_ASQS_SHIFT = 0,
+ AQA_ACQS_SHIFT = 16,
+};
+
+enum NvmeAqaMask {
+ AQA_ASQS_MASK = 0xfff,
+ AQA_ACQS_MASK = 0xfff,
+};
+
+#define NVME_AQA_ASQS(aqa) ((aqa >> AQA_ASQS_SHIFT) & AQA_ASQS_MASK)
+#define NVME_AQA_ACQS(aqa) ((aqa >> AQA_ACQS_SHIFT) & AQA_ACQS_MASK)
+
+typedef struct NvmeCmd {
+ uint8_t opcode;
+ uint8_t fuse;
+ uint16_t cid;
+ uint32_t nsid;
+ uint64_t res1;
+ uint64_t mptr;
+ uint64_t prp1;
+ uint64_t prp2;
+ uint32_t cdw10;
+ uint32_t cdw11;
+ uint32_t cdw12;
+ uint32_t cdw13;
+ uint32_t cdw14;
+ uint32_t cdw15;
+} NvmeCmd;
+
+enum NvmeAdminCommands {
+ NVME_ADM_CMD_DELETE_SQ = 0x00,
+ NVME_ADM_CMD_CREATE_SQ = 0x01,
+ NVME_ADM_CMD_GET_LOG_PAGE = 0x02,
+ NVME_ADM_CMD_DELETE_CQ = 0x04,
+ NVME_ADM_CMD_CREATE_CQ = 0x05,
+ NVME_ADM_CMD_IDENTIFY = 0x06,
+ NVME_ADM_CMD_ABORT = 0x08,
+ NVME_ADM_CMD_SET_FEATURES = 0x09,
+ NVME_ADM_CMD_GET_FEATURES = 0x0a,
+ NVME_ADM_CMD_ASYNC_EV_REQ = 0x0c,
+ NVME_ADM_CMD_ACTIVATE_FW = 0x10,
+ NVME_ADM_CMD_DOWNLOAD_FW = 0x11,
+ NVME_ADM_CMD_FORMAT_NVM = 0x80,
+ NVME_ADM_CMD_SECURITY_SEND = 0x81,
+ NVME_ADM_CMD_SECURITY_RECV = 0x82,
+};
+
+enum NvmeIoCommands {
+ NVME_CMD_FLUSH = 0x00,
+ NVME_CMD_WRITE = 0x01,
+ NVME_CMD_READ = 0x02,
+ NVME_CMD_WRITE_UNCOR = 0x04,
+ NVME_CMD_COMPARE = 0x05,
+ NVME_CMD_DSM = 0x09,
+};
+
+typedef struct NvmeDeleteQ {
+ uint8_t opcode;
+ uint8_t flags;
+ uint16_t cid;
+ uint32_t rsvd1[9];
+ uint16_t qid;
+ uint16_t rsvd10;
+ uint32_t rsvd11[5];
+} NvmeDeleteQ;
+
+typedef struct NvmeCreateCq {
+ uint8_t opcode;
+ uint8_t flags;
+ uint16_t cid;
+ uint32_t rsvd1[5];
+ uint64_t prp1;
+ uint64_t rsvd8;
+ uint16_t cqid;
+ uint16_t qsize;
+ uint16_t cq_flags;
+ uint16_t irq_vector;
+ uint32_t rsvd12[4];
+} NvmeCreateCq;
+
+#define NVME_CQ_FLAGS_PC(cq_flags) (cq_flags & 0x1)
+#define NVME_CQ_FLAGS_IEN(cq_flags) ((cq_flags >> 1) & 0x1)
+
+typedef struct NvmeCreateSq {
+ uint8_t opcode;
+ uint8_t flags;
+ uint16_t cid;
+ uint32_t rsvd1[5];
+ uint64_t prp1;
+ uint64_t rsvd8;
+ uint16_t sqid;
+ uint16_t qsize;
+ uint16_t sq_flags;
+ uint16_t cqid;
+ uint32_t rsvd12[4];
+} NvmeCreateSq;
+
+#define NVME_SQ_FLAGS_PC(sq_flags) (sq_flags & 0x1)
+#define NVME_SQ_FLAGS_QPRIO(sq_flags) ((sq_flags >> 1) & 0x3)
+
+enum NvmeQueueFlags {
+ NVME_Q_PC = 1,
+ NVME_Q_PRIO_URGENT = 0,
+ NVME_Q_PRIO_HIGH = 1,
+ NVME_Q_PRIO_NORMAL = 2,
+ NVME_Q_PRIO_LOW = 3,
+};
+
+typedef struct NvmeIdentify {
+ uint8_t opcode;
+ uint8_t flags;
+ uint16_t cid;
+ uint32_t nsid;
+ uint64_t rsvd2[2];
+ uint64_t prp1;
+ uint64_t prp2;
+ uint32_t cns;
+ uint32_t rsvd11[5];
+} NvmeIdentify;
+
+typedef struct NvmeRwCmd {
+ uint8_t opcode;
+ uint8_t flags;
+ uint16_t cid;
+ uint32_t nsid;
+ uint64_t rsvd2;
+ uint64_t mptr;
+ uint64_t prp1;
+ uint64_t prp2;
+ uint64_t slba;
+ uint16_t nlb;
+ uint16_t control;
+ uint32_t dsmgmt;
+ uint32_t reftag;
+ uint16_t apptag;
+ uint16_t appmask;
+} NvmeRwCmd;
+
+enum {
+ NVME_RW_LR = 1 << 15,
+ NVME_RW_FUA = 1 << 14,
+ NVME_RW_DSM_FREQ_UNSPEC = 0,
+ NVME_RW_DSM_FREQ_TYPICAL = 1,
+ NVME_RW_DSM_FREQ_RARE = 2,
+ NVME_RW_DSM_FREQ_READS = 3,
+ NVME_RW_DSM_FREQ_WRITES = 4,
+ NVME_RW_DSM_FREQ_RW = 5,
+ NVME_RW_DSM_FREQ_ONCE = 6,
+ NVME_RW_DSM_FREQ_PREFETCH = 7,
+ NVME_RW_DSM_FREQ_TEMP = 8,
+ NVME_RW_DSM_LATENCY_NONE = 0 << 4,
+ NVME_RW_DSM_LATENCY_IDLE = 1 << 4,
+ NVME_RW_DSM_LATENCY_NORM = 2 << 4,
+ NVME_RW_DSM_LATENCY_LOW = 3 << 4,
+ NVME_RW_DSM_SEQ_REQ = 1 << 6,
+ NVME_RW_DSM_COMPRESSED = 1 << 7,
+ NVME_RW_PRINFO_PRACT = 1 << 13,
+ NVME_RW_PRINFO_PRCHK_GUARD = 1 << 12,
+ NVME_RW_PRINFO_PRCHK_APP = 1 << 11,
+ NVME_RW_PRINFO_PRCHK_REF = 1 << 10,
+};
+
+typedef struct NvmeDsmCmd {
+ uint8_t opcode;
+ uint8_t flags;
+ uint16_t cid;
+ uint32_t nsid;
+ uint64_t rsvd2[2];
+ uint64_t prp1;
+ uint64_t prp2;
+ uint32_t nr;
+ uint32_t attributes;
+ uint32_t rsvd12[4];
+} NvmeDsmCmd;
+
+enum {
+ NVME_DSMGMT_IDR = 1 << 0,
+ NVME_DSMGMT_IDW = 1 << 1,
+ NVME_DSMGMT_AD = 1 << 2,
+};
+
+typedef struct NvmeDsmRange {
+ uint32_t cattr;
+ uint32_t nlb;
+ uint64_t slba;
+} NvmeDsmRange;
+
+enum NvmeAsyncEventRequest {
+ NVME_AER_TYPE_ERROR = 0,
+ NVME_AER_TYPE_SMART = 1,
+ NVME_AER_TYPE_IO_SPECIFIC = 6,
+ NVME_AER_TYPE_VENDOR_SPECIFIC = 7,
+ NVME_AER_INFO_ERR_INVALID_SQ = 0,
+ NVME_AER_INFO_ERR_INVALID_DB = 1,
+ NVME_AER_INFO_ERR_DIAG_FAIL = 2,
+ NVME_AER_INFO_ERR_PERS_INTERNAL_ERR = 3,
+ NVME_AER_INFO_ERR_TRANS_INTERNAL_ERR = 4,
+ NVME_AER_INFO_ERR_FW_IMG_LOAD_ERR = 5,
+ NVME_AER_INFO_SMART_RELIABILITY = 0,
+ NVME_AER_INFO_SMART_TEMP_THRESH = 1,
+ NVME_AER_INFO_SMART_SPARE_THRESH = 2,
+};
+
+typedef struct NvmeAerResult {
+ uint8_t event_type;
+ uint8_t event_info;
+ uint8_t log_page;
+ uint8_t resv;
+} NvmeAerResult;
+
+typedef struct NvmeCqe {
+ uint32_t result;
+ uint32_t rsvd;
+ uint16_t sq_head;
+ uint16_t sq_id;
+ uint16_t cid;
+ uint16_t status;
+} NvmeCqe;
+
+enum NvmeStatusCodes {
+ NVME_SUCCESS = 0x0000,
+ NVME_INVALID_OPCODE = 0x0001,
+ NVME_INVALID_FIELD = 0x0002,
+ NVME_CID_CONFLICT = 0x0003,
+ NVME_DATA_TRAS_ERROR = 0x0004,
+ NVME_POWER_LOSS_ABORT = 0x0005,
+ NVME_INTERNAL_DEV_ERROR = 0x0006,
+ NVME_CMD_ABORT_REQ = 0x0007,
+ NVME_CMD_ABORT_SQ_DEL = 0x0008,
+ NVME_CMD_ABORT_FAILED_FUSE = 0x0009,
+ NVME_CMD_ABORT_MISSING_FUSE = 0x000a,
+ NVME_INVALID_NSID = 0x000b,
+ NVME_CMD_SEQ_ERROR = 0x000c,
+ NVME_LBA_RANGE = 0x0080,
+ NVME_CAP_EXCEEDED = 0x0081,
+ NVME_NS_NOT_READY = 0x0082,
+ NVME_NS_RESV_CONFLICT = 0x0083,
+ NVME_INVALID_CQID = 0x0100,
+ NVME_INVALID_QID = 0x0101,
+ NVME_MAX_QSIZE_EXCEEDED = 0x0102,
+ NVME_ACL_EXCEEDED = 0x0103,
+ NVME_RESERVED = 0x0104,
+ NVME_AER_LIMIT_EXCEEDED = 0x0105,
+ NVME_INVALID_FW_SLOT = 0x0106,
+ NVME_INVALID_FW_IMAGE = 0x0107,
+ NVME_INVALID_IRQ_VECTOR = 0x0108,
+ NVME_INVALID_LOG_ID = 0x0109,
+ NVME_INVALID_FORMAT = 0x010a,
+ NVME_FW_REQ_RESET = 0x010b,
+ NVME_INVALID_QUEUE_DEL = 0x010c,
+ NVME_FID_NOT_SAVEABLE = 0x010d,
+ NVME_FID_NOT_NSID_SPEC = 0x010f,
+ NVME_FW_REQ_SUSYSTEM_RESET = 0x0110,
+ NVME_CONFLICTING_ATTRS = 0x0180,
+ NVME_INVALID_PROT_INFO = 0x0181,
+ NVME_WRITE_TO_RO = 0x0182,
+ NVME_WRITE_FAULT = 0x0280,
+ NVME_UNRECOVERED_READ = 0x0281,
+ NVME_E2E_GUARD_ERROR = 0x0282,
+ NVME_E2E_APP_ERROR = 0x0283,
+ NVME_E2E_REF_ERROR = 0x0284,
+ NVME_CMP_FAILURE = 0x0285,
+ NVME_ACCESS_DENIED = 0x0286,
+ NVME_MORE = 0x2000,
+ NVME_DNR = 0x4000,
+ NVME_NO_COMPLETE = 0xffff,
+};
+
+typedef struct NvmeFwSlotInfoLog {
+ uint8_t afi;
+ uint8_t reserved1[7];
+ uint8_t frs1[8];
+ uint8_t frs2[8];
+ uint8_t frs3[8];
+ uint8_t frs4[8];
+ uint8_t frs5[8];
+ uint8_t frs6[8];
+ uint8_t frs7[8];
+ uint8_t reserved2[448];
+} NvmeFwSlotInfoLog;
+
+typedef struct NvmeErrorLog {
+ uint64_t error_count;
+ uint16_t sqid;
+ uint16_t cid;
+ uint16_t status_field;
+ uint16_t param_error_location;
+ uint64_t lba;
+ uint32_t nsid;
+ uint8_t vs;
+ uint8_t resv[35];
+} NvmeErrorLog;
+
+typedef struct NvmeSmartLog {
+ uint8_t critical_warning;
+ uint8_t temperature[2];
+ uint8_t available_spare;
+ uint8_t available_spare_threshold;
+ uint8_t percentage_used;
+ uint8_t reserved1[26];
+ uint64_t data_units_read[2];
+ uint64_t data_units_written[2];
+ uint64_t host_read_commands[2];
+ uint64_t host_write_commands[2];
+ uint64_t controller_busy_time[2];
+ uint64_t power_cycles[2];
+ uint64_t power_on_hours[2];
+ uint64_t unsafe_shutdowns[2];
+ uint64_t media_errors[2];
+ uint64_t number_of_error_log_entries[2];
+ uint8_t reserved2[320];
+} NvmeSmartLog;
+
+enum NvmeSmartWarn {
+ NVME_SMART_SPARE = 1 << 0,
+ NVME_SMART_TEMPERATURE = 1 << 1,
+ NVME_SMART_RELIABILITY = 1 << 2,
+ NVME_SMART_MEDIA_READ_ONLY = 1 << 3,
+ NVME_SMART_FAILED_VOLATILE_MEDIA = 1 << 4,
+};
+
+enum LogIdentifier {
+ NVME_LOG_ERROR_INFO = 0x01,
+ NVME_LOG_SMART_INFO = 0x02,
+ NVME_LOG_FW_SLOT_INFO = 0x03,
+};
+
+typedef struct NvmePSD {
+ uint16_t mp;
+ uint16_t reserved;
+ uint32_t enlat;
+ uint32_t exlat;
+ uint8_t rrt;
+ uint8_t rrl;
+ uint8_t rwt;
+ uint8_t rwl;
+ uint8_t resv[16];
+} NvmePSD;
+
+typedef struct NvmeIdCtrl {
+ uint16_t vid;
+ uint16_t ssvid;
+ uint8_t sn[20];
+ uint8_t mn[40];
+ uint8_t fr[8];
+ uint8_t rab;
+ uint8_t ieee[3];
+ uint8_t cmic;
+ uint8_t mdts;
+ uint8_t rsvd255[178];
+ uint16_t oacs;
+ uint8_t acl;
+ uint8_t aerl;
+ uint8_t frmw;
+ uint8_t lpa;
+ uint8_t elpe;
+ uint8_t npss;
+ uint8_t rsvd511[248];
+ uint8_t sqes;
+ uint8_t cqes;
+ uint16_t rsvd515;
+ uint32_t nn;
+ uint16_t oncs;
+ uint16_t fuses;
+ uint8_t fna;
+ uint8_t vwc;
+ uint16_t awun;
+ uint16_t awupf;
+ uint8_t rsvd703[174];
+ uint8_t rsvd2047[1344];
+ NvmePSD psd[32];
+ uint8_t vs[1024];
+} NvmeIdCtrl;
+
+enum NvmeIdCtrlOacs {
+ NVME_OACS_SECURITY = 1 << 0,
+ NVME_OACS_FORMAT = 1 << 1,
+ NVME_OACS_FW = 1 << 2,
+};
+
+enum NvmeIdCtrlOncs {
+ NVME_ONCS_COMPARE = 1 << 0,
+ NVME_ONCS_WRITE_UNCORR = 1 << 1,
+ NVME_ONCS_DSM = 1 << 2,
+ NVME_ONCS_WRITE_ZEROS = 1 << 3,
+ NVME_ONCS_FEATURES = 1 << 4,
+ NVME_ONCS_RESRVATIONS = 1 << 5,
+};
+
+#define NVME_CTRL_SQES_MIN(sqes) ((sqes) & 0xf)
+#define NVME_CTRL_SQES_MAX(sqes) (((sqes) >> 4) & 0xf)
+#define NVME_CTRL_CQES_MIN(cqes) ((cqes) & 0xf)
+#define NVME_CTRL_CQES_MAX(cqes) (((cqes) >> 4) & 0xf)
+
+typedef struct NvmeFeatureVal {
+ uint32_t arbitration;
+ uint32_t power_mgmt;
+ uint32_t temp_thresh;
+ uint32_t err_rec;
+ uint32_t volatile_wc;
+ uint32_t num_queues;
+ uint32_t int_coalescing;
+ uint32_t *int_vector_config;
+ uint32_t write_atomicity;
+ uint32_t async_config;
+ uint32_t sw_prog_marker;
+} NvmeFeatureVal;
+
+#define NVME_ARB_AB(arb) (arb & 0x7)
+#define NVME_ARB_LPW(arb) ((arb >> 8) & 0xff)
+#define NVME_ARB_MPW(arb) ((arb >> 16) & 0xff)
+#define NVME_ARB_HPW(arb) ((arb >> 24) & 0xff)
+
+#define NVME_INTC_THR(intc) (intc & 0xff)
+#define NVME_INTC_TIME(intc) ((intc >> 8) & 0xff)
+
+enum NvmeFeatureIds {
+ NVME_ARBITRATION = 0x1,
+ NVME_POWER_MANAGEMENT = 0x2,
+ NVME_LBA_RANGE_TYPE = 0x3,
+ NVME_TEMPERATURE_THRESHOLD = 0x4,
+ NVME_ERROR_RECOVERY = 0x5,
+ NVME_VOLATILE_WRITE_CACHE = 0x6,
+ NVME_NUMBER_OF_QUEUES = 0x7,
+ NVME_INTERRUPT_COALESCING = 0x8,
+ NVME_INTERRUPT_VECTOR_CONF = 0x9,
+ NVME_WRITE_ATOMICITY = 0xa,
+ NVME_ASYNCHRONOUS_EVENT_CONF = 0xb,
+ NVME_SOFTWARE_PROGRESS_MARKER = 0x80
+};
+
+typedef struct NvmeRangeType {
+ uint8_t type;
+ uint8_t attributes;
+ uint8_t rsvd2[14];
+ uint64_t slba;
+ uint64_t nlb;
+ uint8_t guid[16];
+ uint8_t rsvd48[16];
+} NvmeRangeType;
+
+typedef struct NvmeLBAF {
+ uint16_t ms;
+ uint8_t ds;
+ uint8_t rp;
+} NvmeLBAF;
+
+typedef struct NvmeIdNs {
+ uint64_t nsze;
+ uint64_t ncap;
+ uint64_t nuse;
+ uint8_t nsfeat;
+ uint8_t nlbaf;
+ uint8_t flbas;
+ uint8_t mc;
+ uint8_t dpc;
+ uint8_t dps;
+ uint8_t res30[98];
+ NvmeLBAF lbaf[16];
+ uint8_t res192[192];
+ uint8_t vs[3712];
+} NvmeIdNs;
+
+#define NVME_ID_NS_NSFEAT_THIN(nsfeat) ((nsfeat & 0x1))
+#define NVME_ID_NS_FLBAS_EXTENDED(flbas) ((flbas >> 4) & 0x1)
+#define NVME_ID_NS_FLBAS_INDEX(flbas) ((flbas & 0xf))
+#define NVME_ID_NS_MC_SEPARATE(mc) ((mc >> 1) & 0x1)
+#define NVME_ID_NS_MC_EXTENDED(mc) ((mc & 0x1))
+#define NVME_ID_NS_DPC_LAST_EIGHT(dpc) ((dpc >> 4) & 0x1)
+#define NVME_ID_NS_DPC_FIRST_EIGHT(dpc) ((dpc >> 3) & 0x1)
+#define NVME_ID_NS_DPC_TYPE_3(dpc) ((dpc >> 2) & 0x1)
+#define NVME_ID_NS_DPC_TYPE_2(dpc) ((dpc >> 1) & 0x1)
+#define NVME_ID_NS_DPC_TYPE_1(dpc) ((dpc & 0x1))
+#define NVME_ID_NS_DPC_TYPE_MASK 0x7
+
+enum NvmeIdNsDps {
+ DPS_TYPE_NONE = 0,
+ DPS_TYPE_1 = 1,
+ DPS_TYPE_2 = 2,
+ DPS_TYPE_3 = 3,
+ DPS_TYPE_MASK = 0x7,
+ DPS_FIRST_EIGHT = 8,
+};
+
+static inline void _nvme_check_size(void)
+{
+ QEMU_BUILD_BUG_ON(sizeof(NvmeAerResult) != 4);
+ QEMU_BUILD_BUG_ON(sizeof(NvmeCqe) != 16);
+ QEMU_BUILD_BUG_ON(sizeof(NvmeDsmRange) != 16);
+ QEMU_BUILD_BUG_ON(sizeof(NvmeCmd) != 64);
+ QEMU_BUILD_BUG_ON(sizeof(NvmeDeleteQ) != 64);
+ QEMU_BUILD_BUG_ON(sizeof(NvmeCreateCq) != 64);
+ QEMU_BUILD_BUG_ON(sizeof(NvmeCreateSq) != 64);
+ QEMU_BUILD_BUG_ON(sizeof(NvmeIdentify) != 64);
+ QEMU_BUILD_BUG_ON(sizeof(NvmeRwCmd) != 64);
+ QEMU_BUILD_BUG_ON(sizeof(NvmeDsmCmd) != 64);
+ QEMU_BUILD_BUG_ON(sizeof(NvmeRangeType) != 64);
+ QEMU_BUILD_BUG_ON(sizeof(NvmeErrorLog) != 64);
+ QEMU_BUILD_BUG_ON(sizeof(NvmeFwSlotInfoLog) != 512);
+ QEMU_BUILD_BUG_ON(sizeof(NvmeSmartLog) != 512);
+ QEMU_BUILD_BUG_ON(sizeof(NvmeIdCtrl) != 4096);
+ QEMU_BUILD_BUG_ON(sizeof(NvmeIdNs) != 4096);
+}
+
+typedef struct NvmeAsyncEvent {
+ QSIMPLEQ_ENTRY(NvmeAsyncEvent) entry;
+ NvmeAerResult result;
+} NvmeAsyncEvent;
+
+typedef struct NvmeRequest {
+ struct NvmeSQueue *sq;
+ BlockDriverAIOCB *aiocb;
+ uint16_t status;
+ NvmeCqe cqe;
+ BlockAcctCookie acct;
+ QEMUSGList qsg;
+ QTAILQ_ENTRY(NvmeRequest)entry;
+} NvmeRequest;
+
+typedef struct NvmeSQueue {
+ struct NvmeCtrl *ctrl;
+ uint16_t sqid;
+ uint16_t cqid;
+ uint32_t head;
+ uint32_t tail;
+ uint32_t size;
+ uint64_t dma_addr;
+ QEMUTimer *timer;
+ NvmeRequest *io_req;
+ QTAILQ_HEAD(sq_req_list, NvmeRequest) req_list;
+ QTAILQ_HEAD(out_req_list, NvmeRequest) out_req_list;
+ QTAILQ_ENTRY(NvmeSQueue) entry;
+} NvmeSQueue;
+
+typedef struct NvmeCQueue {
+ struct NvmeCtrl *ctrl;
+ uint8_t phase;
+ uint16_t cqid;
+ uint16_t irq_enabled;
+ uint32_t head;
+ uint32_t tail;
+ uint32_t vector;
+ uint32_t size;
+ uint64_t dma_addr;
+ QEMUTimer *timer;
+ QTAILQ_HEAD(sq_list, NvmeSQueue) sq_list;
+ QTAILQ_HEAD(cq_req_list, NvmeRequest) req_list;
+} NvmeCQueue;
+
+typedef struct NvmeNamespace {
+ NvmeIdNs id_ns;
+} NvmeNamespace;
+
+#define TYPE_NVME "nvme"
+#define NVME(obj) \
+ OBJECT_CHECK(NvmeCtrl, (obj), TYPE_NVME)
+
+typedef struct NvmeCtrl {
+ PCIDevice parent_obj;
+ MemoryRegion iomem;
+ NvmeBar bar;
+ BlockConf conf;
+
+ uint16_t page_size;
+ uint16_t page_bits;
+ uint16_t max_prp_ents;
+ uint16_t cqe_size;
+ uint16_t sqe_size;
+ uint32_t reg_size;
+ uint32_t num_namespaces;
+ uint32_t num_queues;
+ uint32_t max_q_ents;
+ uint64_t ns_size;
+
+ char *serial;
+ NvmeNamespace *namespaces;
+ NvmeSQueue **sq;
+ NvmeCQueue **cq;
+ NvmeSQueue admin_sq;
+ NvmeCQueue admin_cq;
+ NvmeIdCtrl id_ctrl;
+} NvmeCtrl;
+
+#endif /* HW_NVME_H */
diff --git a/include/hw/pci/pci_ids.h b/include/hw/pci/pci_ids.h
index d8dc2f1..08f8161 100644
--- a/include/hw/pci/pci_ids.h
+++ b/include/hw/pci/pci_ids.h
@@ -19,6 +19,7 @@
#define PCI_CLASS_STORAGE_IDE 0x0101
#define PCI_CLASS_STORAGE_RAID 0x0104
#define PCI_CLASS_STORAGE_SATA 0x0106
+#define PCI_CLASS_STORAGE_EXPRESS 0x0108
#define PCI_CLASS_STORAGE_OTHER 0x0180
#define PCI_CLASS_NETWORK_ETHERNET 0x0200
--
1.8.1.4
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