scsi: add scsi_req_print()

Handy for debugging.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

2 files changed, 115 insertions, 0 deletions

diff --git a/hw/scsi-bus.c b/hw/scsi-bus.c
index 2e4fd3874c..e362671d87 100644
--- a/hw/scsi-bus.c
+++ b/hw/scsi-bus.c
@@ -364,6 +364,120 @@ int scsi_req_parse(SCSIRequest *req, uint8_t *buf)
     return 0;
 }
 
+static const char *scsi_command_name(uint8_t cmd)
+{
+    static const char *names[] = {
+        [ TEST_UNIT_READY          ] = "TEST_UNIT_READY",
+        [ REZERO_UNIT              ] = "REZERO_UNIT",
+        [ REQUEST_SENSE            ] = "REQUEST_SENSE",
+        [ FORMAT_UNIT              ] = "FORMAT_UNIT",
+        [ READ_BLOCK_LIMITS        ] = "READ_BLOCK_LIMITS",
+        [ REASSIGN_BLOCKS          ] = "REASSIGN_BLOCKS",
+        [ READ_6                   ] = "READ_6",
+        [ WRITE_6                  ] = "WRITE_6",
+        [ SEEK_6                   ] = "SEEK_6",
+        [ READ_REVERSE             ] = "READ_REVERSE",
+        [ WRITE_FILEMARKS          ] = "WRITE_FILEMARKS",
+        [ SPACE                    ] = "SPACE",
+        [ INQUIRY                  ] = "INQUIRY",
+        [ RECOVER_BUFFERED_DATA    ] = "RECOVER_BUFFERED_DATA",
+        [ MODE_SELECT              ] = "MODE_SELECT",
+        [ RESERVE                  ] = "RESERVE",
+        [ RELEASE                  ] = "RELEASE",
+        [ COPY                     ] = "COPY",
+        [ ERASE                    ] = "ERASE",
+        [ MODE_SENSE               ] = "MODE_SENSE",
+        [ START_STOP               ] = "START_STOP",
+        [ RECEIVE_DIAGNOSTIC       ] = "RECEIVE_DIAGNOSTIC",
+        [ SEND_DIAGNOSTIC          ] = "SEND_DIAGNOSTIC",
+        [ ALLOW_MEDIUM_REMOVAL     ] = "ALLOW_MEDIUM_REMOVAL",
+
+        [ SET_WINDOW               ] = "SET_WINDOW",
+        [ READ_CAPACITY            ] = "READ_CAPACITY",
+        [ READ_10                  ] = "READ_10",
+        [ WRITE_10                 ] = "WRITE_10",
+        [ SEEK_10                  ] = "SEEK_10",
+        [ WRITE_VERIFY             ] = "WRITE_VERIFY",
+        [ VERIFY                   ] = "VERIFY",
+        [ SEARCH_HIGH              ] = "SEARCH_HIGH",
+        [ SEARCH_EQUAL             ] = "SEARCH_EQUAL",
+        [ SEARCH_LOW               ] = "SEARCH_LOW",
+        [ SET_LIMITS               ] = "SET_LIMITS",
+        [ PRE_FETCH                ] = "PRE_FETCH",
+        [ READ_POSITION            ] = "READ_POSITION",
+        [ SYNCHRONIZE_CACHE        ] = "SYNCHRONIZE_CACHE",
+        [ LOCK_UNLOCK_CACHE        ] = "LOCK_UNLOCK_CACHE",
+        [ READ_DEFECT_DATA         ] = "READ_DEFECT_DATA",
+        [ MEDIUM_SCAN              ] = "MEDIUM_SCAN",
+        [ COMPARE                  ] = "COMPARE",
+        [ COPY_VERIFY              ] = "COPY_VERIFY",
+        [ WRITE_BUFFER             ] = "WRITE_BUFFER",
+        [ READ_BUFFER              ] = "READ_BUFFER",
+        [ UPDATE_BLOCK             ] = "UPDATE_BLOCK",
+        [ READ_LONG                ] = "READ_LONG",
+        [ WRITE_LONG               ] = "WRITE_LONG",
+        [ CHANGE_DEFINITION        ] = "CHANGE_DEFINITION",
+        [ WRITE_SAME               ] = "WRITE_SAME",
+        [ READ_TOC                 ] = "READ_TOC",
+        [ LOG_SELECT               ] = "LOG_SELECT",
+        [ LOG_SENSE                ] = "LOG_SENSE",
+        [ MODE_SELECT_10           ] = "MODE_SELECT_10",
+        [ RESERVE_10               ] = "RESERVE_10",
+        [ RELEASE_10               ] = "RELEASE_10",
+        [ MODE_SENSE_10            ] = "MODE_SENSE_10",
+        [ PERSISTENT_RESERVE_IN    ] = "PERSISTENT_RESERVE_IN",
+        [ PERSISTENT_RESERVE_OUT   ] = "PERSISTENT_RESERVE_OUT",
+        [ MOVE_MEDIUM              ] = "MOVE_MEDIUM",
+        [ READ_12                  ] = "READ_12",
+        [ WRITE_12                 ] = "WRITE_12",
+        [ WRITE_VERIFY_12          ] = "WRITE_VERIFY_12",
+        [ SEARCH_HIGH_12           ] = "SEARCH_HIGH_12",
+        [ SEARCH_EQUAL_12          ] = "SEARCH_EQUAL_12",
+        [ SEARCH_LOW_12            ] = "SEARCH_LOW_12",
+        [ READ_ELEMENT_STATUS      ] = "READ_ELEMENT_STATUS",
+        [ SEND_VOLUME_TAG          ] = "SEND_VOLUME_TAG",
+        [ WRITE_LONG_2             ] = "WRITE_LONG_2",
+
+        [ REWIND                   ] = "REWIND",
+        [ REPORT_DENSITY_SUPPORT   ] = "REPORT_DENSITY_SUPPORT",
+        [ LOAD_UNLOAD              ] = "LOAD_UNLOAD",
+        [ SET_CD_SPEED             ] = "SET_CD_SPEED",
+        [ BLANK                    ] = "BLANK",
+    };
+
+    if (cmd >= ARRAY_SIZE(names) || names[cmd] == NULL)
+        return "*UNKNOWN*";
+    return names[cmd];
+}
+
+void scsi_req_print(SCSIRequest *req)
+{
+    FILE *fp = stderr;
+    int i;
+
+    fprintf(fp, "[%s id=%d] %s",
+            req->dev->qdev.parent_bus->name,
+            req->dev->id,
+            scsi_command_name(req->cmd.buf[0]));
+    for (i = 1; i < req->cmd.len; i++) {
+        fprintf(fp, " 0x%02x", req->cmd.buf[i]);
+    }
+    switch (req->cmd.mode) {
+    case SCSI_XFER_NONE:
+        fprintf(fp, " - none\n");
+        break;
+    case SCSI_XFER_FROM_DEV:
+        fprintf(fp, " - from-dev len=%zd\n", req->cmd.xfer);
+        break;
+    case SCSI_XFER_TO_DEV:
+        fprintf(fp, " - to-dev len=%zd\n", req->cmd.xfer);
+        break;
+    default:
+        fprintf(fp, " - Oops\n");
+        break;
+    }
+}
+
 void scsi_req_complete(SCSIRequest *req)
 {
     assert(req->status != -1);
diff --git a/hw/scsi.h b/hw/scsi.h
index 2fe8c12060..8f0200d163 100644
--- a/hw/scsi.h
+++ b/hw/scsi.h
@@ -107,6 +107,7 @@ SCSIRequest *scsi_req_find(SCSIDevice *d, uint32_t tag);
 void scsi_req_free(SCSIRequest *req);
 
 int scsi_req_parse(SCSIRequest *req, uint8_t *buf);
+void scsi_req_print(SCSIRequest *req);
 void scsi_req_complete(SCSIRequest *req);
 
 #endif