panel: name the drive being imaged in the initiator summary

"Imaging SCSI ID 5 at 1337 kB/s" does not answer what it is imaging. The
identity is in the per-target table behind GET_INITIATOR_STATUS, which is async
and so is exactly the thing an imaging board cannot deliver - the panel and the
web UI were left with a rate and nothing else.

Carry the current target's type, vendor, product and size in the summary, which
the ISR answers. It is a few more bytes on a command that already reads the
same target's sector counts for the progress figure.

Author: erichelgeson

lib/BlueSCSI_platform_RP2MCU/panel_protocol.cpp

@@ -802,8 +802,16 @@ static size_t handle_get_initiator_summary(uint8_t* response, size_t max_size) {
         if (tstatus == PANEL_INITIATOR_TARGET_DONE) {
             sum->targets_imaged++;
         }
-        if (id == current_target && sectorcount > 0) {
-            sum->progress = (uint8_t)(100ULL * sectors_done / sectorcount);
+        if (id == current_target) {
+            if (sectorcount > 0) {
+                sum->progress = (uint8_t)(100ULL * sectors_done / sectorcount);
+            }
+            scsiInitiatorGetTargetInfo(id, NULL, &sum->device_type, NULL,
+                                       &sum->sectorcount, &sum->sectorsize, NULL,
+                                       NULL, sum->vendor, sum->product,
+                                       NULL, NULL, NULL, NULL);
+            sum->vendor[sizeof(sum->vendor) - 1] = '\0';
+            sum->product[sizeof(sum->product) - 1] = '\0';
         }
     }
 

lib/BlueSCSI_platform_RP2MCU/panel_protocol_defs_initiator.h

@@ -56,6 +56,15 @@ typedef struct __attribute__((packed)) {
     uint8_t  targets_found;
     uint8_t  targets_imaged;
     uint16_t speed_kbps;
+    // Identity and size of the target being worked on. Static once scanned, but
+    // carried here because the async per-target table is the thing an imaging
+    // board cannot deliver - and "Imaging SCSI ID 5" with nothing else is not
+    // much of an answer to "what is it doing".
+    uint8_t  device_type;      // SCSI peripheral type of the current target
+    uint32_t sectorcount;
+    uint32_t sectorsize;
+    char     vendor[9];        // null-terminated
+    char     product[17];      // null-terminated
 } panel_initiator_summary_t;
 
 static_assert(offsetof(device_list_response_t, reserved) == 2,