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acpi: work arround missing _BBN, check _HID

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This commit is contained in:
cinap_lenrek 2012-06-19 16:30:11 +02:00
parent 89efb07d4f
commit 69470de37d
1 changed files with 33 additions and 7 deletions
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40
sys/src/9/pc/archacpi.c
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@ -281,24 +281,50 @@ Foundbus:
bus->aintr = ai;
}
static char*
eisaid(void *v)
{
static char id[8];
ulong b, l;
int i;
if(amltag(v) == 's')
return v;
b = amlint(v);
for(l = 0, i=24; i>=0; i -= 8, b >>= 8)
l |= (b & 0xFF) << i;
id[7] = 0;
for(i=6; i>=3; i--, l >>= 4)
id[i] = "0123456789ABCDEF"[l & 0xF];
for(i=2; i>=0; i--, l >>= 5)
id[i] = '@' + (l & 0x1F);
return id;
}
static int
pcibusno(void *dot)
{
int bno, adr, tbdf;
Pcidev *pdev;
void *p, *x;
char *id;
p = nil;
if(x = amlwalk(dot, "^_BBN")){
if(amleval(x, "", &p) < 0)
return -1;
return amlint(p);
id = nil;
if(x = amlwalk(dot, "^_HID")){
p = nil;
if(amleval(x, "", &p) == 0)
id = eisaid(p);
}
if((x = amlwalk(dot, "^_ADR")) == nil)
return -1;
if((x = amlwalk(dot, "^_BBN")) == nil)
if((x = amlwalk(dot, "^_ADR")) == nil)
return -1;
p = nil;
if(amleval(x, "", &p) < 0)
return -1;
adr = amlint(p);
/* if root bridge, then we are done here */
if(id && (strcmp(id, "PNP0A03")==0 || strcmp(id, "PNP0A08")==0))
return adr;
x = amlwalk(dot, "^");
if(x == nil || x == dot)
return -1;