hw/block/nvme.h

   1 #ifndef HW_NVME_H
   2 #define HW_NVME_H
   3
   4 #include "block/nvme.h"
   5
   6 typedef struct NvmeParams {
   7     char     *serial;
   8     uint32_t num_queues; /* deprecated since 5.1 */
   9     uint32_t max_ioqpairs;
  10     uint16_t msix_qsize;
  11     uint32_t cmb_size_mb;
  12     uint8_t  aerl;
  13     uint32_t aer_max_queued;
  14     uint8_t  mdts;
  15 } NvmeParams;
  16
  17 typedef struct NvmeAsyncEvent {
  18     QTAILQ_ENTRY(NvmeAsyncEvent) entry;
  19     NvmeAerResult result;
  20 } NvmeAsyncEvent;
  21
  22 typedef struct NvmeRequest {
  23     struct NvmeSQueue       *sq;
  24     struct NvmeNamespace    *ns;
  25     BlockAIOCB              *aiocb;
  26     uint16_t                status;
  27     NvmeCqe                 cqe;
  28     NvmeCmd                 cmd;
  29     BlockAcctCookie         acct;
  30     QEMUSGList              qsg;
  31     QEMUIOVector            iov;
  32     QTAILQ_ENTRY(NvmeRequest)entry;
  33 } NvmeRequest;
  34
  35 typedef struct NvmeSQueue {
  36     struct NvmeCtrl *ctrl;
  37     uint16_t    sqid;
  38     uint16_t    cqid;
  39     uint32_t    head;
  40     uint32_t    tail;
  41     uint32_t    size;
  42     uint64_t    dma_addr;
  43     QEMUTimer   *timer;
  44     NvmeRequest *io_req;
  45     QTAILQ_HEAD(, NvmeRequest) req_list;
  46     QTAILQ_HEAD(, NvmeRequest) out_req_list;
  47     QTAILQ_ENTRY(NvmeSQueue) entry;
  48 } NvmeSQueue;
  49
  50 typedef struct NvmeCQueue {
  51     struct NvmeCtrl *ctrl;
  52     uint8_t     phase;
  53     uint16_t    cqid;
  54     uint16_t    irq_enabled;
  55     uint32_t    head;
  56     uint32_t    tail;
  57     uint32_t    vector;
  58     uint32_t    size;
  59     uint64_t    dma_addr;
  60     QEMUTimer   *timer;
  61     QTAILQ_HEAD(, NvmeSQueue) sq_list;
  62     QTAILQ_HEAD(, NvmeRequest) req_list;
  63 } NvmeCQueue;
  64
  65 typedef struct NvmeNamespace {
  66     NvmeIdNs        id_ns;
  67 } NvmeNamespace;
  68
  69 static inline NvmeLBAF *nvme_ns_lbaf(NvmeNamespace *ns)
  70 {
  71     NvmeIdNs *id_ns = &ns->id_ns;
  72     return &id_ns->lbaf[NVME_ID_NS_FLBAS_INDEX(id_ns->flbas)];
  73 }
  74
  75 static inline uint8_t nvme_ns_lbads(NvmeNamespace *ns)
  76 {
  77     return nvme_ns_lbaf(ns)->ds;
  78 }
  79
  80 #define TYPE_NVME "nvme"
  81 #define NVME(obj) \
  82         OBJECT_CHECK(NvmeCtrl, (obj), TYPE_NVME)
  83
  84 typedef struct NvmeFeatureVal {
  85     struct {
  86         uint16_t temp_thresh_hi;
  87         uint16_t temp_thresh_low;
  88     };
  89     uint32_t    async_config;
  90 } NvmeFeatureVal;
  91
  92 typedef struct NvmeCtrl {
  93     PCIDevice    parent_obj;
  94     MemoryRegion iomem;
  95     MemoryRegion ctrl_mem;
  96     NvmeBar      bar;
  97     BlockConf    conf;
  98     NvmeParams   params;
  99
 100     bool        qs_created;
 101     uint32_t    page_size;
 102     uint16_t    page_bits;
 103     uint16_t    max_prp_ents;
 104     uint16_t    cqe_size;
 105     uint16_t    sqe_size;
 106     uint32_t    reg_size;
 107     uint32_t    num_namespaces;
 108     uint32_t    max_q_ents;
 109     uint64_t    ns_size;
 110     uint8_t     outstanding_aers;
 111     uint8_t     *cmbuf;
 112     uint32_t    irq_status;
 113     uint64_t    host_timestamp;                 /* Timestamp sent by the host */
 114     uint64_t    timestamp_set_qemu_clock_ms;    /* QEMU clock time */
 115     uint64_t    starttime_ms;
 116     uint16_t    temperature;
 117
 118     HostMemoryBackend *pmrdev;
 119
 120     uint8_t     aer_mask;
 121     NvmeRequest **aer_reqs;
 122     QTAILQ_HEAD(, NvmeAsyncEvent) aer_queue;
 123     int         aer_queued;
 124
 125     NvmeNamespace   *namespaces;
 126     NvmeSQueue      **sq;
 127     NvmeCQueue      **cq;
 128     NvmeSQueue      admin_sq;
 129     NvmeCQueue      admin_cq;
 130     NvmeIdCtrl      id_ctrl;
 131     NvmeFeatureVal  features;
 132 } NvmeCtrl;
 133
 134 /* calculate the number of LBAs that the namespace can accomodate */
 135 static inline uint64_t nvme_ns_nlbas(NvmeCtrl *n, NvmeNamespace *ns)
 136 {
 137     return n->ns_size >> nvme_ns_lbads(ns);
 138 }
 139
 140 #endif /* HW_NVME_H */