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Add Pci.Device class

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This commit is contained in:
Josh Holtrop 2023-06-10 11:16:27 -04:00
parent dd07a08388
commit d600e089e5
1 changed files with 40 additions and 21 deletions
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61
src/hulk/pci.d
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@ -2,6 +2,7 @@ module hulk.pci;
import hulk.cpu; import hulk.cpu;
import hulk.klog; import hulk.klog;
import hulk.hurl.a1;
struct Pci struct Pci
{ {
@ -23,6 +24,43 @@ struct Pci
ubyte function_nr; ubyte function_nr;
} }
struct Device
{
Address address;
ushort vendor_id;
ushort device_id;
ubyte class_id;
ubyte subclass_id;
ubyte if_id;
void initialize(Address address, ushort vendor_id, ushort device_id)
{
this.vendor_id = vendor_id;
this.device_id = device_id;
uint reg2 = read_config_register(address, 2u);
class_id = (reg2 >> 24u) & 0xFFu;
subclass_id = (reg2 >> 16u) & 0xFFu;
if_id = (reg2 >> 8u) & 0xFFu;
Klog.writefln("Found PCI device %04x:%04x (%02x:%02x:%02x) at %02u:%02u.%u",
vendor_id, device_id,
class_id, subclass_id, if_id,
address.bus_nr, address.device_nr, address.function_nr);
init_device(class_id, subclass_id, if_id);
if (address.function_nr == 0u)
{
uint reg3 = read_config_register(address, 3u);
if ((reg3 & (1u << 23u)) != 0u)
{
/* Multi-function device found. */
for (address.function_nr = 1u; address.function_nr < 8u; address.function_nr++)
{
scan(address);
}
}
}
}
}
struct SerialBusController struct SerialBusController
{ {
enum ID = 0x0Cu; enum ID = 0x0Cu;
@ -91,29 +129,10 @@ struct Pci
ulong reg0 = read_config_register(address, 0u); ulong reg0 = read_config_register(address, 0u);
if (reg0 != 0xFFFFFFFFu) if (reg0 != 0xFFFFFFFFu)
{ {
uint reg2 = read_config_register(address, 2u);
ushort vendor_id = reg0 & 0xFFFFu; ushort vendor_id = reg0 & 0xFFFFu;
ushort device_id = (reg0 >> 16u) & 0xFFFFu; ushort device_id = (reg0 >> 16u) & 0xFFFFu;
ubyte class_id = (reg2 >> 24u) & 0xFFu; Device * device = A1.allocate!Device();
ubyte subclass_id = (reg2 >> 16u) & 0xFFu; device.initialize(address, vendor_id, device_id);
ubyte if_id = (reg2 >> 8u) & 0xFFu;
Klog.writefln("Found PCI device %04x:%04x (%02x:%02x:%02x) at %02u:%02u.%u",
vendor_id, device_id,
class_id, subclass_id, if_id,
address.bus_nr, address.device_nr, address.function_nr);
init_device(class_id, subclass_id, if_id);
if (address.function_nr == 0u)
{
uint reg3 = read_config_register(address, 3u);
if ((reg3 & (1u << 23u)) != 0u)
{
/* Multi-function device found. */
for (address.function_nr = 1u; address.function_nr < 8u; address.function_nr++)
{
scan(address);
}
}
}
} }
} }