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Unobfuscate HDAudioInit and HDAudioScan.

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This commit is contained in:
TomAwezome 2022-12-30 17:46:49 -05:00
parent 64703e9a12
commit e599c67ca5
1 changed files with 14 additions and 7 deletions
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21
src/Home/Sound/HDAudio1/Sup1HDAudio/HDAudio.ZC
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@ -578,16 +578,23 @@ public Bool HDAudioInit(I64 hd_bus, I64 hd_dev, I64 hd_fun)
{ {
I64 i; I64 i;
U32 *_d; U32 *_d;
U16 w, *_w; U16 w, *_w, val;
U8 *_b; U8 *_b;
if (hda.bar) if (hda.bar)
HDAudioEnd; HDAudioEnd;
else else
HDAudioUncachedInit; HDAudioUncachedInit;
if (PCIReadU16(hd_bus, hd_dev, hd_fun, 0) == 0x8086 && (hda.bar = PCIReadU32(hd_bus, hd_dev, hd_fun, 0x10) & ~(0x1F))) if (PCIReadU16(hd_bus, hd_dev, hd_fun, PCIR_VENDOR_ID) == 0x8086 &&
(hda.bar = dev.uncached_alias + PCIReadU32(hd_bus, hd_dev, hd_fun, PCIR_BASE0) & ~0x1F))
{ {
PCIWriteU16(hd_bus, hd_dev, hd_fun, 0x04, PCIReadU16(hd_bus, hd_dev, hd_fun, 0x04) | 0x406); /* Set HDAudio PCI device command
register IO Enable, Bus
Master Enable, Memory Space,and
Interrupt Disable bits. */
val = PCIReadU16(hd_bus, hd_dev, hd_fun, PCIR_COMMAND);
val |= PCI_CMDF_IOEN | PCI_CMDF_BMEN | PCI_CMDF_INTD | PCI_CMDF_MSEN;
PCIWriteU16(hd_bus, hd_dev, hd_fun, PCIR_COMMAND, val);
HDRst; HDRst;
@ -706,14 +713,14 @@ public Bool HDAudioInit(I64 hd_bus, I64 hd_dev, I64 hd_fun)
Bool HDAudioScan() Bool HDAudioScan()
{ {
I64 i = -1, j; I64 i = -1, bdf;
while (TRUE) while (TRUE)
{ {
j = PCIClassFind(PCIC_MULTIMEDIA << 16 | PCISC_AUDIO << 8, ++i); bdf = PCIClassFind(PCIC_MULTIMEDIA << 16 | PCISC_AUDIO << 8, ++i);
if (j < 0) if (bdf < 0)
return FALSE; return FALSE;
if (HDAudioInit(j.u8[2], j.u8[1], j.u8[0])) if (HDAudioInit(bdf.u8[2], bdf.u8[1], bdf.u8[0]))
return TRUE; return TRUE;
} }
} }