ACPI_STATUS AcpiExPciConfigSpaceHandler ( UINT32 Function, ACPI_PHYSICAL_ADDRESS Address, UINT32 BitWidth, UINT64 *Value, void *HandlerContext, void *RegionContext) { ACPI_STATUS Status = AE_OK; ACPI_PCI_ID *PciId; UINT16 PciRegister; ACPI_FUNCTION_TRACE (ExPciConfigSpaceHandler); /* * The arguments to AcpiOs(Read|Write)PciConfiguration are: * * PciSegment is the PCI bus segment range 0-31 * PciBus is the PCI bus number range 0-255 * PciDevice is the PCI device number range 0-31 * PciFunction is the PCI device function number * PciRegister is the Config space register range 0-255 bytes * * Value - input value for write, output address for read * */ PciId = (ACPI_PCI_ID *) RegionContext; PciRegister = (UINT16) (UINT32) Address; ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Pci-Config %u (%u) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n", Function, BitWidth, PciId->Segment, PciId->Bus, PciId->Device, PciId->Function, PciRegister)); switch (Function) { case ACPI_READ: *Value = 0; Status = AcpiOsReadPciConfiguration (PciId, PciRegister, Value, BitWidth); break; case ACPI_WRITE: Status = AcpiOsWritePciConfiguration (PciId, PciRegister, *Value, BitWidth); break; default: Status = AE_BAD_PARAMETER; break; } return_ACPI_STATUS (Status); }
static void MsgClaimPci(uintptr_t rcpt, uintptr_t addr, uintptr_t pins) { addr &= 0xffff; ACPI_PCI_ID id = { 0, (addr >> 8) & 0xff, (addr >> 3) & 31, addr & 7 }; log(claim_pci, "claim pci %02x:%02x.%x\n", id.Bus, id.Device, id.Function); // Set up whatever stuff to track PCI device drivers in general int irqs[4] = {0}; for (int pin = 0; pin < 4; pin++) { if (!(pins & (1 << pin))) continue; ACPI_STATUS status = RouteIRQ(&id, 0, &irqs[pin]); CHECK_STATUS("RouteIRQ"); log(claim_pci, "%02x:%02x.%x pin %d routed to IRQ %#x\n", id.Bus, id.Device, id.Function, pin, irqs[pin]); } if (pins & ACPI_PCI_CLAIM_MASTER) { u64 value; AcpiOsReadPciConfiguration(&id, PCI_COMMAND, &value, 16); if (!(value & PCI_COMMAND_MASTER)) { value |= PCI_COMMAND_MASTER; AcpiOsWritePciConfiguration(&id, PCI_COMMAND, value, 16); } } pins = (u64)irqs[3] << 48 | (u64)irqs[2] << 32 | irqs[1] << 16 | irqs[0]; send2(MSG_ACPI_CLAIM_PCI, rcpt, addr, pins); hmod(rcpt, (uintptr_t)pci_device_handles + addr, 0); return; failed: send2(MSG_ACPI_CLAIM_PCI, rcpt, 0, 0); } static size_t debugger_buffer_pos = 0; static void debugger_pre_cmd(void) { debugger_buffer_pos = 0; AcpiGbl_MethodExecuting = FALSE; AcpiGbl_StepToNextCall = FALSE; AcpiDbSetOutputDestination(ACPI_DB_CONSOLE_OUTPUT); }