diff options
| -rw-r--r-- | hw/scsi/scsi-disk.c | 1 | ||||
| -rw-r--r-- | hw/scsi/scsi-generic.c | 92 | ||||
| -rw-r--r-- | include/hw/scsi/scsi.h | 1 |
3 files changed, 94 insertions, 0 deletions
diff --git a/hw/scsi/scsi-disk.c b/hw/scsi/scsi-disk.c index fd12fbb814..469aec2839 100644 --- a/hw/scsi/scsi-disk.c +++ b/hw/scsi/scsi-disk.c @@ -2573,6 +2573,7 @@ static void scsi_block_realize(SCSIDevice *dev, Error **errp) s->features |= (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS); scsi_realize(&s->qdev, errp); + scsi_generic_read_device_identification(&s->qdev); } static bool scsi_block_is_passthrough(SCSIDiskState *s, uint8_t *buf) diff --git a/hw/scsi/scsi-generic.c b/hw/scsi/scsi-generic.c index 75a4127d3a..f8a1ff2cac 100644 --- a/hw/scsi/scsi-generic.c +++ b/hw/scsi/scsi-generic.c @@ -355,6 +355,96 @@ static int32_t scsi_send_command(SCSIRequest *req, uint8_t *cmd) } } +static int read_naa_id(const uint8_t *p, uint64_t *p_wwn) +{ + int i; + + if ((p[1] & 0xF) == 3) { + /* NAA designator type */ + if (p[3] != 8) { + return -EINVAL; + } + *p_wwn = ldq_be_p(p + 4); + return 0; + } + + if ((p[1] & 0xF) == 8) { + /* SCSI name string designator type */ + if (p[3] < 20 || memcmp(&p[4], "naa.", 4)) { + return -EINVAL; + } + if (p[3] > 20 && p[24] != ',') { + return -EINVAL; + } + *p_wwn = 0; + for (i = 8; i < 24; i++) { + char c = toupper(p[i]); + c -= (c >= '0' && c <= '9' ? '0' : 'A' - 10); + *p_wwn = (*p_wwn << 4) | c; + } + return 0; + } + + return -EINVAL; +} + +void scsi_generic_read_device_identification(SCSIDevice *s) +{ + uint8_t cmd[6]; + uint8_t buf[250]; + uint8_t sensebuf[8]; + sg_io_hdr_t io_header; + int ret; + int i, len; + + memset(cmd, 0, sizeof(cmd)); + memset(buf, 0, sizeof(buf)); + cmd[0] = INQUIRY; + cmd[1] = 1; + cmd[2] = 0x83; + cmd[4] = sizeof(buf); + + memset(&io_header, 0, sizeof(io_header)); + io_header.interface_id = 'S'; + io_header.dxfer_direction = SG_DXFER_FROM_DEV; + io_header.dxfer_len = sizeof(buf); + io_header.dxferp = buf; + io_header.cmdp = cmd; + io_header.cmd_len = sizeof(cmd); + io_header.mx_sb_len = sizeof(sensebuf); + io_header.sbp = sensebuf; + io_header.timeout = 6000; /* XXX */ + + ret = blk_ioctl(s->conf.blk, SG_IO, &io_header); + if (ret < 0 || io_header.driver_status || io_header.host_status) { + return; + } + + len = MIN((buf[2] << 8) | buf[3], sizeof(buf) - 4); + for (i = 0; i + 3 <= len; ) { + const uint8_t *p = &buf[i + 4]; + uint64_t wwn; + + if (i + (p[3] + 4) > len) { + break; + } + + if ((p[1] & 0x10) == 0) { + /* Associated with the logical unit */ + if (read_naa_id(p, &wwn) == 0) { + s->wwn = wwn; + } + } else if ((p[1] & 0x10) == 0x10) { + /* Associated with the target port */ + if (read_naa_id(p, &wwn) == 0) { + s->port_wwn = wwn; + } + } + + i += p[3] + 4; + } +} + static int get_stream_blocksize(BlockBackend *blk) { uint8_t cmd[6]; @@ -458,6 +548,8 @@ static void scsi_generic_realize(SCSIDevice *s, Error **errp) } DPRINTF("block size %d\n", s->blocksize); + + scsi_generic_read_device_identification(s); } const SCSIReqOps scsi_generic_req_ops = { diff --git a/include/hw/scsi/scsi.h b/include/hw/scsi/scsi.h index bbabba22da..29052f81a5 100644 --- a/include/hw/scsi/scsi.h +++ b/include/hw/scsi/scsi.h @@ -273,6 +273,7 @@ void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense); void scsi_device_set_ua(SCSIDevice *sdev, SCSISense sense); void scsi_device_report_change(SCSIDevice *dev, SCSISense sense); void scsi_device_unit_attention_reported(SCSIDevice *dev); +void scsi_generic_read_device_identification(SCSIDevice *dev); int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed); SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int target, int lun); |