@@ -2572,6 +2572,7 @@ 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)
@@ -358,6 +358,96 @@ 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];
@@ -461,6 +551,8 @@ 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 = {
@@ -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);
This lets a SAS adapter expose them through its own configuration mechanism. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> --- hw/scsi/scsi-disk.c | 1 + hw/scsi/scsi-generic.c | 92 ++++++++++++++++++++++++++++++++++++++++++++++++++ include/hw/scsi/scsi.h | 1 + 3 files changed, 94 insertions(+)