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Merge branch 'pci' into disk

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This commit is contained in:
Adrien Bourmault 2020-02-17 18:47:37 +01:00
commit b5c1f78104
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GPG Key ID: AFEE5788AEE3F4EC
2 changed files with 21 additions and 8 deletions
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21
include/io/pci.h
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@ -35,11 +35,18 @@
//
// Device registers offsets
//
#define PCI_REG_VENDOR 0
#define PCI_REG_DEVICE 2
#define PCI_REG_COMMAND 4
#define PCI_REG_STATUS 6
//..
#define PCI_REG_VENDOR 0x00
#define PCI_REG_DEVICE 0x02
#define PCI_REG_COMMAND 0x04
#define PCI_REG_STATUS 0x06
#define PCI_REG_REVISION 0x08
#define PCI_REG_PROGIF 0x09
#define PCI_REG_SUBCLASS 0x0A
#define PCI_REG_CLASS 0x0B
#define PCI_REG_CACHE_LINE_SIZE 0x0C
#define PCI_REG_LATENCY_TIMER 0x0D
#define PCI_REG_HEADER_TYPE 0x0E
#define PCI_REG_BIST 0x0F
#define PCI_REG_BAR0 0x10
#define PCI_REG_BAR1 0x14
#define PCI_REG_BAR2 0x18
@ -57,6 +64,10 @@
struct PciDev_t {
ushort vendorID;
ushort deviceID;
uchar classID;
uchar subclassID;
void* configAddr;
};

8
kaleid/kernel/io/pci.c
View File

@ -115,7 +115,9 @@ void IoPciEnumerate()
for(uchar function = 0; function < 8; function++) {
ushort vendor = pciReadConfigWord((uchar)bus, device, function, PCI_REG_VENDOR);
if(vendor == 0xffff) continue;
DebugLog("PCI device vendor: %x, device: %x\n",
DebugLog("PCI device class: %x, subclass: %x, vendor: %x, device: %x\n",
pciReadConfigByte((uchar)bus, device, function, PCI_REG_CLASS),
pciReadConfigByte((uchar)bus, device, function, PCI_REG_SUBCLASS),
vendor,
pciReadConfigWord((uchar)bus, device, function, PCI_REG_DEVICE)
);
@ -157,8 +159,6 @@ void IoInitPCI()
pciConfigBaseAddress = MCFG_table->pciConfigBaseAddress;
DebugLog("PCI Config Base address = 0x%p\n", pciConfigBaseAddress);
IoPciEnumerate();
// Give R/W access to the configuration space
int maxI = (256 * 32 * 8 * 4096) / KPAGESIZE;
for(int i=0; i < maxI; i++)
@ -167,4 +167,6 @@ void IoInitPCI()
(void *)((ulong)pciConfigBaseAddress + i * KPAGESIZE),
PRESENT | READWRITE);
}
IoPciEnumerate();
}