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<td class='lines'><pre><code><style>.highlight .hll { background-color: #ffffcc }
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.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */</style><div class="highlight"><pre><span></span><span class="cm">/*</span>
<span class="cm"> * Functions used by both the SCSI initiator code and the SCSI target code.</span>
<span class="cm"> */</span>
<span class="cp">#ifndef _SCSI_COMMON_H_</span>
<span class="cp">#define _SCSI_COMMON_H_</span>
<span class="cp">#include</span> <span class="cpf"><linux/types.h></span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf"><scsi/scsi_proto.h></span><span class="cp"></span>
<span class="k">static</span> <span class="kr">inline</span> <span class="kt">unsigned</span>
<span class="nf">scsi_varlen_cdb_length</span><span class="p">(</span><span class="k">const</span> <span class="kt">void</span> <span class="o">*</span><span class="n">hdr</span><span class="p">)</span>
<span class="p">{</span>
<span class="k">return</span> <span class="p">((</span><span class="k">struct</span> <span class="n">scsi_varlen_cdb_hdr</span> <span class="o">*</span><span class="p">)</span><span class="n">hdr</span><span class="p">)</span><span class="o">-></span><span class="n">additional_cdb_length</span> <span class="o">+</span> <span class="mi">8</span><span class="p">;</span>
<span class="p">}</span>
<span class="k">extern</span> <span class="k">const</span> <span class="kt">unsigned</span> <span class="kt">char</span> <span class="n">scsi_command_size_tbl</span><span class="p">[</span><span class="mi">8</span><span class="p">];</span>
<span class="cp">#define COMMAND_SIZE(opcode) scsi_command_size_tbl[((opcode) >> 5) & 7]</span>
<span class="k">static</span> <span class="kr">inline</span> <span class="kt">unsigned</span>
<span class="nf">scsi_command_size</span><span class="p">(</span><span class="k">const</span> <span class="kt">unsigned</span> <span class="kt">char</span> <span class="o">*</span><span class="n">cmnd</span><span class="p">)</span>
<span class="p">{</span>
<span class="k">return</span> <span class="p">(</span><span class="n">cmnd</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">==</span> <span class="n">VARIABLE_LENGTH_CMD</span><span class="p">)</span> <span class="o">?</span>
<span class="n">scsi_varlen_cdb_length</span><span class="p">(</span><span class="n">cmnd</span><span class="p">)</span> <span class="o">:</span> <span class="n">COMMAND_SIZE</span><span class="p">(</span><span class="n">cmnd</span><span class="p">[</span><span class="mi">0</span><span class="p">]);</span>
<span class="p">}</span>
<span class="cm">/* Returns a human-readable name for the device */</span>
<span class="k">extern</span> <span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="nf">scsi_device_type</span><span class="p">(</span><span class="kt">unsigned</span> <span class="n">type</span><span class="p">);</span>
<span class="k">extern</span> <span class="kt">void</span> <span class="nf">int_to_scsilun</span><span class="p">(</span><span class="n">u64</span><span class="p">,</span> <span class="k">struct</span> <span class="n">scsi_lun</span> <span class="o">*</span><span class="p">);</span>
<span class="k">extern</span> <span class="n">u64</span> <span class="nf">scsilun_to_int</span><span class="p">(</span><span class="k">struct</span> <span class="n">scsi_lun</span> <span class="o">*</span><span class="p">);</span>
<span class="cm">/*</span>
<span class="cm"> * This is a slightly modified SCSI sense "descriptor" format header.</span>
<span class="cm"> * The addition is to allow the 0x70 and 0x71 response codes. The idea</span>
<span class="cm"> * is to place the salient data from either "fixed" or "descriptor" sense</span>
<span class="cm"> * format into one structure to ease application processing.</span>
<span class="cm"> *</span>
<span class="cm"> * The original sense buffer should be kept around for those cases</span>
<span class="cm"> * in which more information is required (e.g. the LBA of a MEDIUM ERROR).</span>
<span class="cm"> */</span>
<span class="k">struct</span> <span class="n">scsi_sense_hdr</span> <span class="p">{</span> <span class="cm">/* See SPC-3 section 4.5 */</span>
<span class="n">u8</span> <span class="n">response_code</span><span class="p">;</span> <span class="cm">/* permit: 0x0, 0x70, 0x71, 0x72, 0x73 */</span>
<span class="n">u8</span> <span class="n">sense_key</span><span class="p">;</span>
<span class="n">u8</span> <span class="n">asc</span><span class="p">;</span>
<span class="n">u8</span> <span class="n">ascq</span><span class="p">;</span>
<span class="n">u8</span> <span class="n">byte4</span><span class="p">;</span>
<span class="n">u8</span> <span class="n">byte5</span><span class="p">;</span>
<span class="n">u8</span> <span class="n">byte6</span><span class="p">;</span>
<span class="n">u8</span> <span class="n">additional_length</span><span class="p">;</span> <span class="cm">/* always 0 for fixed sense format */</span>
<span class="p">};</span>
<span class="k">static</span> <span class="kr">inline</span> <span class="kt">bool</span> <span class="nf">scsi_sense_valid</span><span class="p">(</span><span class="k">const</span> <span class="k">struct</span> <span class="n">scsi_sense_hdr</span> <span class="o">*</span><span class="n">sshdr</span><span class="p">)</span>
<span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">sshdr</span><span class="p">)</span>
<span class="k">return</span> <span class="nb">false</span><span class="p">;</span>
<span class="k">return</span> <span class="p">(</span><span class="n">sshdr</span><span class="o">-></span><span class="n">response_code</span> <span class="o">&</span> <span class="mh">0x70</span><span class="p">)</span> <span class="o">==</span> <span class="mh">0x70</span><span class="p">;</span>
<span class="p">}</span>
<span class="k">extern</span> <span class="kt">bool</span> <span class="nf">scsi_normalize_sense</span><span class="p">(</span><span class="k">const</span> <span class="n">u8</span> <span class="o">*</span><span class="n">sense_buffer</span><span class="p">,</span> <span class="kt">int</span> <span class="n">sb_len</span><span class="p">,</span>
<span class="k">struct</span> <span class="n">scsi_sense_hdr</span> <span class="o">*</span><span class="n">sshdr</span><span class="p">);</span>
<span class="k">extern</span> <span class="kt">void</span> <span class="nf">scsi_build_sense_buffer</span><span class="p">(</span><span class="kt">int</span> <span class="n">desc</span><span class="p">,</span> <span class="n">u8</span> <span class="o">*</span><span class="n">buf</span><span class="p">,</span> <span class="n">u8</span> <span class="n">key</span><span class="p">,</span> <span class="n">u8</span> <span class="n">asc</span><span class="p">,</span> <span class="n">u8</span> <span class="n">ascq</span><span class="p">);</span>
<span class="kt">int</span> <span class="nf">scsi_set_sense_information</span><span class="p">(</span><span class="n">u8</span> <span class="o">*</span><span class="n">buf</span><span class="p">,</span> <span class="kt">int</span> <span class="n">buf_len</span><span class="p">,</span> <span class="n">u64</span> <span class="n">info</span><span class="p">);</span>
<span class="k">extern</span> <span class="k">const</span> <span class="n">u8</span> <span class="o">*</span> <span class="nf">scsi_sense_desc_find</span><span class="p">(</span><span class="k">const</span> <span class="n">u8</span> <span class="o">*</span> <span class="n">sense_buffer</span><span class="p">,</span> <span class="kt">int</span> <span class="n">sb_len</span><span class="p">,</span>
<span class="kt">int</span> <span class="n">desc_type</span><span class="p">);</span>
<span class="cp">#endif </span><span class="cm">/* _SCSI_COMMON_H_ */</span><span class="cp"></span>
</pre></div>
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