scsiblockcmds: allow setting density code from outside.

Author: maximumspatium

devices/common/scsi/scsiblockcmds.cpp

@@ -38,7 +38,9 @@ ScsiBlockCmds::ScsiBlockCmds() {
                           &ScsiBlockCmds::get_error_recovery_page);
 }
 
-void ScsiBlockCmds::init_block_device(uint8_t medium_type, uint8_t dev_flags) {
+void ScsiBlockCmds::init_block_device(uint8_t medium_type, uint8_t dev_flags,
+                                      uint8_t density_code)
+{
     this->medium_type  = medium_type;
     this->device_flags = dev_flags;
 
@@ -215,13 +217,11 @@ int ScsiBlockCmds::read_capacity() {
 }
 
 int ScsiBlockCmds::format_block_descriptors(uint8_t* out_ptr) {
-    uint8_t density_code = 0;
-
     uint32_t nblocks = std::min((int64_t)this->blk_dev->get_size_in_blocks(),
                                 (int64_t)0xFFFFFFFFUL);
 
     WRITE_DWORD_BE_A(&out_ptr[0], nblocks);
-    WRITE_DWORD_BE_A(&out_ptr[4], (density_code << 24) |
+    WRITE_DWORD_BE_A(&out_ptr[4], (this->density_code << 24) |
                     (this->blk_dev->get_block_size() & 0xFFFFFF));
 
     return 8;

devices/common/scsi/scsiblockcmds.h

@@ -38,7 +38,7 @@ class ScsiBlockCmds : public ScsiCommonCmds {
         this->blk_dev = blk_dev_obj;
     }
 
-    void init_block_device(uint8_t medium_type, uint8_t dev_flags);
+    void init_block_device(uint8_t medium_type, uint8_t dev_flags, uint8_t density_code);
 
     virtual int read_new();
     virtual int write_new();
@@ -64,6 +64,7 @@ class ScsiBlockCmds : public ScsiCommonCmds {
 
     uint8_t medium_type  = 0;
     uint8_t device_flags = 0;
+    uint8_t density_code = 0;
 };
 
 #endif // SCSI_BLOCK_COMMANDS_H

devices/common/scsi/scsihd.cpp

@@ -65,7 +65,7 @@ void ScsiHardDisk::insert_image(std::string filename) {
 
     this->is_writeable = true;
 
-    this->init_block_device(0, 0);
+    this->init_block_device(0, 0, 0);
 }
 
 void ScsiHardDisk::process_command() {