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ZealOS/docs/Kernel/BlkDev/DiskATAId.ZC.html
TomAwezome 48d4f999cb Update documentation.
2021-12-11 06:10:58 -05:00

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<a name="l1"></a><span class=cF9>CBlkDev</span><span class=cF0> *</span><span class=cF5>ATAMount</span><span class=cF0>(</span><span class=cF1>U8</span><span class=cF0> first_drive_let, </span><span class=cF9>I64</span><span class=cF0> type, </span><span class=cF9>I64</span><span class=cF0> port_num)
<a name="l2"></a>{
<a name="l3"></a> </span><span class=cF9>CBlkDev</span><span class=cF0> *res;
<a name="l4"></a>
<a name="l5"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cFE>0</span><span class=cF0> &lt;= first_drive_let - </span><span class=cF6>'A'</span><span class=cF0> &lt; </span><span class=cF3>DRIVES_NUM</span><span class=cF0> &amp;&amp; </span><span class=cF7>(</span><span class=cF0>type == </span><span class=cF3>BDT_ATA</span><span class=cF0> || type == </span><span class=cF3>BDT_ATAPI</span><span class=cF7>)</span><span class=cF0> &amp;&amp; </span><span class=cFE>0</span><span class=cF0> &lt;= port_num &lt;= </span><span class=cF3>AHCI_MAX_PORTS</span><span class=cF0>)
<a name="l6"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l7"></a> res = </span><span class=cF5>BlkDevNextFreeSlot</span><span class=cF0>(first_drive_let, type);
<a name="l8"></a> res-&gt;port_num = port_num;
<a name="l9"></a> res-&gt;ahci_port = &amp;</span><span class=cFB>blkdev</span><span class=cF0>.ahci_hba-&gt;ports[port_num];
<a name="l10"></a> res-&gt;ahci_port-&gt;cmd_list_base = </span><span class=cF3>NULL</span><span class=cF0>; </span><span class=cF2>// See </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/BlkDev/DiskAHCI.ZC.html#l1021"><span class=cF4>AHCIAtaInit</span></a><span class=cF2> ...</span><span class=cF0>
<a name="l11"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cF5>BlkDevAdd</span><span class=cF7>(</span><span class=cF0>res,, </span><span class=cF3>FALSE</span><span class=cF0>, </span><span class=cF3>FALSE</span><span class=cF7>)</span><span class=cF0>)
<a name="l12"></a> </span><span class=cF1>return</span><span class=cF0> res;
<a name="l13"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l14"></a>
<a name="l15"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cF3>NULL</span><span class=cF0>;
<a name="l16"></a>}
<a name="l17"></a>
<a name="l18"></a></span><span class=cF9>I64</span><span class=cF0> </span><span class=cF5>MountAHCIAuto</span><span class=cF0>()
<a name="l19"></a>{</span><span class=cF2>//Try to mount hard drives and CD/DVD drives automatically. (Kernel.Config option).</span><span class=cF0>
<a name="l20"></a></span><span class=cF2>//It uses 'C' and 'T' as first drive letters or whatever you set</span><span class=cF0>
<a name="l21"></a></span><span class=cF2>//in config when compiling Kernel.BIN.</span><span class=cF0>
<a name="l22"></a> </span><span class=cF9>CBlkDev</span><span class=cF0> *bd = </span><span class=cF5>Letter2BlkDev</span><span class=cF0>(</span><span class=cF6>':'</span><span class=cF0>, </span><span class=cF3>FALSE</span><span class=cF0>);
<a name="l23"></a> </span><span class=cF9>I64</span><span class=cF0> res = </span><span class=cFE>0</span><span class=cF0>, i, ata_port = -</span><span class=cFE>1</span><span class=cF0>, atapi_port = -</span><span class=cFE>1</span><span class=cF0>;
<a name="l24"></a> </span><span class=cF9>CAHCIPort</span><span class=cF0> *port;
<a name="l25"></a>
<a name="l26"></a> </span><span class=cF6>&quot;MountAHCIAuto;\n&quot;</span><span class=cF0>;
<a name="l27"></a> </span><span class=cF1>if</span><span class=cF0> (bd)
<a name="l28"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l29"></a> </span><span class=cF2>// if boot-drive blkdev exists, do a SATA port iteration to mount it first</span><span class=cF0>
<a name="l30"></a> </span><span class=cF6>&quot;( ':' BlkDev at 0x%0X )\n&quot;</span><span class=cF0>, bd;
<a name="l31"></a> </span><span class=cF1>for</span><span class=cF0> (i = </span><span class=cFE>0</span><span class=cF0>; i &lt; </span><span class=cF3>AHCI_MAX_PORTS</span><span class=cF0>; i++)
<a name="l32"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cF5>Bt</span><span class=cF7>(</span><span class=cF0>&amp;</span><span class=cFB>blkdev</span><span class=cF0>.ahci_hba-&gt;ports_implemented, i</span><span class=cF7>)</span><span class=cF0>)
<a name="l33"></a> {
<a name="l34"></a> port = &amp;</span><span class=cFB>blkdev</span><span class=cF0>.ahci_hba-&gt;ports[i];
<a name="l35"></a>
<a name="l36"></a> </span><span class=cF1>if</span><span class=cF0> (bd-&gt;port_num == i)
<a name="l37"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l38"></a> </span><span class=cF1>if</span><span class=cF0> (ata_port == -</span><span class=cFE>1</span><span class=cF0> &amp;&amp; bd-&gt;type == </span><span class=cF3>BDT_ATA</span><span class=cF0> &amp;&amp; port-&gt;signature == </span><span class=cF3>AHCI_PxSIG_ATA</span><span class=cF0>)
<a name="l39"></a> {
<a name="l40"></a> </span><span class=cF6>&quot;ATAMount('%C', BDT_ATA, %d);\n&quot;</span><span class=cF0>, </span><span class=cFB>blkdev</span><span class=cF0>.first_hd_drive_let, i;
<a name="l41"></a> </span><span class=cF5>ATAMount</span><span class=cF0>(</span><span class=cFB>blkdev</span><span class=cF0>.first_hd_drive_let, </span><span class=cF3>BDT_ATA</span><span class=cF0>, i);
<a name="l42"></a> ata_port = i;
<a name="l43"></a> res++;
<a name="l44"></a> }
<a name="l45"></a> </span><span class=cF1>else</span><span class=cF0> </span><span class=cF1>if</span><span class=cF0> (atapi_port == -</span><span class=cFE>1</span><span class=cF0> &amp;&amp; bd-&gt;type == </span><span class=cF3>BDT_ATAPI</span><span class=cF0> &amp;&amp; port-&gt;signature == </span><span class=cF3>AHCI_PxSIG_ATAPI</span><span class=cF0>)
<a name="l46"></a> {
<a name="l47"></a> </span><span class=cF6>&quot;ATAMount('%C', BDT_ATAPI, %d);\n&quot;</span><span class=cF0>, </span><span class=cFB>blkdev</span><span class=cF0>.first_dvd_drive_let, i;
<a name="l48"></a> </span><span class=cF5>ATAMount</span><span class=cF0>(</span><span class=cFB>blkdev</span><span class=cF0>.first_dvd_drive_let, </span><span class=cF3>BDT_ATAPI</span><span class=cF0>, i);
<a name="l49"></a> atapi_port = i;
<a name="l50"></a> res++;
<a name="l51"></a> }
<a name="l52"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l53"></a> }
<a name="l54"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l55"></a> </span><span class=cF2>// do a 2nd iteration to mount remaining drives</span><span class=cF0>
<a name="l56"></a> </span><span class=cF2>// (we will end up trying to boot off whichever drive/partition ends up at chosen letter)</span><span class=cF0>
<a name="l57"></a> </span><span class=cF1>for</span><span class=cF0> (i = </span><span class=cFE>0</span><span class=cF0>; i &lt; </span><span class=cF3>AHCI_MAX_PORTS</span><span class=cF0>; i++)
<a name="l58"></a> </span><span class=cF1>if</span><span class=cF0> (i != ata_port &amp;&amp; i != atapi_port &amp;&amp; </span><span class=cF5>Bt</span><span class=cF7>(</span><span class=cF0>&amp;</span><span class=cFB>blkdev</span><span class=cF0>.ahci_hba-&gt;ports_implemented, i</span><span class=cF7>)</span><span class=cF0>)
<a name="l59"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l60"></a> port = &amp;</span><span class=cFB>blkdev</span><span class=cF0>.ahci_hba-&gt;ports[i];
<a name="l61"></a>
<a name="l62"></a> </span><span class=cF1>if</span><span class=cF0> (port-&gt;signature == </span><span class=cF3>AHCI_PxSIG_ATA</span><span class=cF0>)
<a name="l63"></a> {
<a name="l64"></a> </span><span class=cF6>&quot;ATAMount('%C', BDT_ATA, %d);\n&quot;</span><span class=cF0>, </span><span class=cFB>blkdev</span><span class=cF0>.first_hd_drive_let, i;
<a name="l65"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cF5>ATAMount</span><span class=cF7>(</span><span class=cFB>blkdev</span><span class=cF0>.first_hd_drive_let, </span><span class=cF3>BDT_ATA</span><span class=cF0>, i</span><span class=cF7>)</span><span class=cF0>)
<a name="l66"></a> res++;
<a name="l67"></a> }
<a name="l68"></a> </span><span class=cF1>else</span><span class=cF0> </span><span class=cF1>if</span><span class=cF0> (port-&gt;signature == </span><span class=cF3>AHCI_PxSIG_ATAPI</span><span class=cF0>)
<a name="l69"></a> {
<a name="l70"></a> </span><span class=cF6>&quot;ATAMount('%C', BDT_ATAPI, %d);\n&quot;</span><span class=cF0>, </span><span class=cFB>blkdev</span><span class=cF0>.first_dvd_drive_let, i;
<a name="l71"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cF5>ATAMount</span><span class=cF7>(</span><span class=cFB>blkdev</span><span class=cF0>.first_dvd_drive_let, </span><span class=cF3>BDT_ATAPI</span><span class=cF0>, i</span><span class=cF7>)</span><span class=cF0>)
<a name="l72"></a> res++;
<a name="l73"></a> }
<a name="l74"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l75"></a> </span><span class=cF6>&quot;\n&quot;</span><span class=cF0>;
<a name="l76"></a> </span><span class=cFB>blkdev</span><span class=cF0>.mount_ide_auto_count = res;
<a name="l77"></a>
<a name="l78"></a> </span><span class=cF1>return</span><span class=cF0> res;
<a name="l79"></a>}
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