added mechanism status ATAPI command

[palacios.git] / palacios / src / devices / atapi.h

diff --git a/palacios/src/devices/atapi.h b/palacios/src/devices/atapi.h
index f32ed8d..0892f8c 100644 (file)
--- a/palacios/src/devices/atapi.h
+++ b/palacios/src/devices/atapi.h
@@ -460,6 +460,7 @@ static int atapi_mode_sense(struct ide_internal * ide, struct ide_channel * chan
 }
 
 
+
 static int atapi_inquiry(struct ide_internal * ide, struct ide_channel * channel) {
     struct ide_drive * drive = get_selected_drive(channel);
     struct atapi_inquiry_cmd * inquiry_cmd = (struct atapi_inquiry_cmd *)(drive->data_buf);
@@ -492,6 +493,28 @@ static int atapi_inquiry(struct ide_internal * ide, struct ide_channel * channel
 }
 
 
+static int atapi_mech_status(struct ide_internal * ide, struct ide_channel * channel) {
+    struct ide_drive * drive = get_selected_drive(channel);
+    struct atapi_mech_status_cmd * status_cmd = (struct atapi_mech_status_cmd *)(drive->data_buf);
+    uint16_t alloc_len = be_to_le_16(status_cmd->alloc_len);
+    struct atapi_mech_status_resp * resp = (struct atapi_mech_status_resp *)(drive->data_buf);
+    int xfer_len = sizeof(struct atapi_mech_status_resp);
+
+    memset(resp, 0, sizeof(struct atapi_mech_status_resp));
+
+    resp->lba = le_to_be_32(1);
+    resp->slot_table_len = le_to_be_16(0);
+    
+    if (alloc_len < xfer_len) {
+       xfer_len = alloc_len;
+    }
+
+    atapi_setup_cmd_resp(ide, channel, xfer_len);
+
+    return 0;
+}
+
+
 static int atapi_cmd_is_data_op(uint8_t cmd) {
     switch (cmd) {
        case 0x28: // read (10)
@@ -583,11 +606,18 @@ static int atapi_handle_packet(struct guest_info * core, struct ide_internal * i
           }
           break;
 
+       case 0xbd: // mechanism status 
+          if (atapi_mech_status(ide, channel) == -1) {
+              PrintError("IDE: error in ATAPI Mechanism status query (%x)\n", cmd);
+              return -1;
+          }
+          break;
+
+
        case 0xa8: // read(12)
 
 
        case 0x1b: // start/stop drive
-       case 0xbd: // mechanism status 
 
        case 0xbe: // read cd