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Merge branch 'pci' of gitlab.os-k.eu:os-k-team/os-k into pci

This commit is contained in:
Adrien Bourmault 2020-02-12 17:51:31 +01:00
parent f1ae002ded 362e90d380
commit 03af335ead
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GPG Key ID: AFEE5788AEE3F4EC
2 changed files with 17 additions and 9 deletions
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2
include/io/pci.h
View File

@ -48,7 +48,7 @@
//----------------------------------------------------------------------------//
void IoInitPCI();
void pciScanAll();
void IoPciEnumerate();
#endif

24
kaleid/kernel/io/pci.c
View File

@ -30,7 +30,8 @@
void* pciConfigBaseAddress = NULL;
static inline void* pciGetConfigAddr(uchar bus, uchar device, uchar function, ushort offset)
static inline void* pciGetConfigAddr(uchar bus, uchar device,
uchar function, ushort offset)
{
if(device > 32) {
KernLog("pciGetConfigAddr(): bad device ID\n");
@ -45,25 +46,29 @@ static inline void* pciGetConfigAddr(uchar bus, uchar device, uchar function, us
return 0;
}
return (void*)(bus*32*8*4096 + device*8*4096 + function*4096 + offset + (ulong)pciConfigBaseAddress);
return (void*)(bus*32*8*4096 + device*8*4096 + function*4096 +
offset + (ulong)pciConfigBaseAddress);
}
uchar pciReadConfigByte(uchar bus, uchar device, uchar function, ushort offset)
static inline uchar pciReadConfigByte(uchar bus, uchar device,
uchar function, ushort offset)
{
return *((uchar*)(pciGetConfigAddr(bus, device, function, offset)));
}
ushort pciReadConfigWord(uchar bus, uchar device, uchar function, ushort offset)
static inline ushort pciReadConfigWord(uchar bus, uchar device,
uchar function, ushort offset)
{
return *((ushort*)(pciGetConfigAddr(bus, device, function, offset)));
}
uint pciReadConfigDWord(uchar bus, uchar device, uchar function, ushort offset)
static inline uint pciReadConfigDWord(uchar bus, uchar device,
uchar function, ushort offset)
{
return *((uint*)(pciGetConfigAddr(bus, device, function, offset)));
}
void pciScanAll()
void IoPciEnumerate()
{
if(pciConfigBaseAddress == NULL) {
KernLog("Unable to access PCI configuration : MCFG table not reachable\n");
@ -75,7 +80,10 @@ void pciScanAll()
for(uchar function = 0; function < 8; function++) {
ushort vendor = pciReadConfigWord(bus, device, function, PCI_REG_VENDOR);
if(vendor == 0xffff) continue;
DebugLog("PCI device found ! vendor: %x, device: %x\n", vendor, pciReadConfigWord(bus, device, function, PCI_REG_DEVICE));
DebugLog("PCI device found ! vendor: %x, device: %x\n",
vendor,
pciReadConfigWord(bus, device, function, PCI_REG_DEVICE)
);
}
}
}
@ -91,7 +99,7 @@ void IoInitPCI()
pciConfigBaseAddress = MCFG_table->pciConfigBaseAddress;
DebugLog("PCI Config Base address = 0x%p\n", pciConfigBaseAddress);
pciScanAll();
IoPciEnumerate();
}