void
main(int argc, char *argv[])
{
int set = -1, enable = -1;
int seg = 0, bus = 0, dev = 2, fn = 0, pin = 0;
ACPI_STATUS status;
int verbose = 0;
AcpiDbgLevel = 0;
ARGBEGIN{
case 'v':
AcpiDbgLevel = ACPI_LV_VERBOSITY1;
verbose++;
break;
case 's':
set = open("#P/irqmap", OWRITE);
if (set < 0)
sysfatal("%r");
break;
default:
sysfatal("usage: acpi/irq [-v] [-s]");
break;
}ARGEND;
status = AcpiInitializeSubsystem();
if (ACPI_FAILURE(status)) {
sysfatal("Error %d\n", status);
}
status = AcpiInitializeTables(NULL, 0, FALSE);
if (ACPI_FAILURE(status))
sysfatal("can't set up acpi tables: %d", status);
if (verbose)
print("init dables\n");
status = AcpiLoadTables();
if (ACPI_FAILURE(status))
sysfatal("Can't load ACPI tables: %d", status);
/* from acpi: */
/* If the Hardware Reduced flag is set, machine is always in acpi mode */
AcpiGbl_ReducedHardware = 1;
if (verbose)
print("LOADED TABLES.\n");
status = AcpiEnableSubsystem(0);
if (ACPI_FAILURE(status))
print("Probably does not matter: Can't enable ACPI subsystem");
if (verbose)
print("enabled subsystem.\n");
status = AcpiInitializeObjects(0);
if (ACPI_FAILURE(status))
sysfatal("Can't Initialize ACPI objects");
int picmode;
status = FindIOAPICs(&picmode);
if (picmode == 0)
sysfatal("PANIC: Can't handle picmode 0!");
ACPI_STATUS ExecuteOSI(int pic_mode);
if (verbose)
print("FindIOAPICs returns status %d picmode %d\n", status, picmode);
status = ExecuteOSI(picmode);
CHECK_STATUS("ExecuteOSI");
failed:
if (verbose)
print("inited objects.\n");
if (verbose)
AcpiDbgLevel |= ACPI_LV_VERBOSITY1 | ACPI_LV_FUNCTIONS;
status = AcpiInitializeDebugger();
if (ACPI_FAILURE(status)) {
sysfatal("Error %d\n", status);
}
int GetPRT();
status = GetPRT();
if (ACPI_FAILURE(status)) {
sysfatal("Error %d\n", status);
}
while (1) {
if (scanf("%x %x", &bus, &dev) < 0)
break;
ACPI_STATUS RouteIRQ(ACPI_PCI_ID* device, int pin, int* irq);
AcpiDbgLevel = 0;
ACPI_PCI_ID id = (ACPI_PCI_ID){seg, bus, dev, fn};
status = AcpiOsReadPciConfiguration (&id, 0x3d, &pin, 8);
if (!ACPI_SUCCESS(status)){
printf("Can't read pin for bus %d dev %d\n", bus, dev);
continue;
}
print("ROUTE {%d, %d, %d, %d}, pin %d\n", seg, bus, dev, fn, pin);
int irq;
status = RouteIRQ(&id, pin, &irq);
print("status %d, irq %d\n", status, irq);
AcpiDbgLevel = 0;
print("echo %d %d %d %d 0x%x > /dev/irqmap", seg, bus, dev, fn, irq);
//ACPI_STATUS PrintDevices(void);
//status = PrintDevices();
if (set > -1)
fprint(set, "%d %d %d %d 0x%x", seg, bus, dev, fn, irq);
}
/* we're done. Enable the IRQs we might have set up. */
enable = open("/dev/irqenable", OWRITE);
if (enable < 0)
sysfatal("/dev/irqenable: %r");
if (write(enable, "", 1) < 1)
sysfatal("Write irqenable: %r");
exits(0);
}
void start() {
ACPI_STATUS status = AE_OK;
printf("acpica: starting...\n");
// NB! Must be at least as large as physical memory - the ACPI tables could
// be anywhere. (Could be handled by AcpiOsMapMemory though.)
map(0, MAP_PHYS | PROT_READ | PROT_WRITE | PROT_NO_CACHE,
(void*)ACPI_PHYS_BASE, 0, USER_MAP_MAX - ACPI_PHYS_BASE);
__default_section_init();
AcpiDbgLayer = 0;
AcpiDbgLevel = ACPI_LV_REPAIR | ACPI_LV_INTERRUPTS;
status = InitializeFullAcpi ();
CHECK_STATUS("InitializeFullAcpi");
int pic_mode = 0; // Default is PIC mode if something fails
status = PrintAPICTable();
CHECK_STATUS("PrintAPICTable");
status = FindIOAPICs(&pic_mode);
CHECK_STATUS("Find IOAPIC");
status = ExecuteOSI(pic_mode);
CHECK_STATUS("ExecuteOSI");
// Tables we get in Bochs:
// * DSDT: All the AML code
// * FACS
// * FACP
// * APIC (= MADT)
// * SSDT: Secondary System Description Table
// Contains more AML code loaded automatically by ACPICA
// More tables on qemu:
// * Another SSDT (Loaded by ACPICA)
// * HPET table
// PrintFACSTable();
// PrintFACPTable();
// TODO Iterate through and disable all pci interrupt link devices (call
// _DIS). Then we'll enable the ones we actually intend to use.
EnumeratePCI();
AcpiWriteBitRegister(ACPI_BITREG_SCI_ENABLE, 1);
//AcpiWriteBitRegister(ACPI_BITREG_POWER_BUTTON_ENABLE, 1);
AcpiInstallGlobalEventHandler(GlobalEventHandler, NULL);
AcpiEnableEvent(ACPI_EVENT_POWER_BUTTON, 0);
for (;;) {
ipc_dest_t rcpt = 0x100;
ipc_arg_t arg = 0;
ipc_arg_t arg2 = 0;
ipc_msg_t msg = recv2(&rcpt, &arg, &arg2);
//printf("acpica: Received %#lx from %#lx: %#lx %#lx\n", msg, rcpt, arg, arg2);
if (msg == MSG_PULSE) {
if (AcpiOsCheckInterrupt(rcpt, arg)) {
continue;
} else {
printf("acpica: Unhandled pulse: %#x from %#lx\n", arg, rcpt);
}
}
switch (msg & 0xff)
{
case MSG_ACPI_FIND_PCI:
MsgFindPci(rcpt, arg);
break;
case MSG_ACPI_CLAIM_PCI:
MsgClaimPci(rcpt, arg, arg2);
break;
// This feels a bit wrong, but as long as we use PIO access to PCI
// configuration space, we need to serialize all accesses.
case MSG_ACPI_READ_PCI:
arg = PciReadWord((arg & 0x7ffffffc) | 0x80000000);
send1(MSG_ACPI_READ_PCI, rcpt, arg);
break;
case MSG_ACPI_DEBUGGER_INIT:
debugger_pre_cmd();
send0(MSG_ACPI_DEBUGGER_INIT, rcpt);
break;
case MSG_ACPI_DEBUGGER_BUFFER:
assert(debugger_buffer_pos < ACPI_DB_LINE_BUFFER_SIZE);
AcpiGbl_DbLineBuf[debugger_buffer_pos++] = arg;
send0(MSG_ACPI_DEBUGGER_BUFFER, rcpt);
break;
case MSG_ACPI_DEBUGGER_CMD:
assert(debugger_buffer_pos < ACPI_DB_LINE_BUFFER_SIZE);
AcpiGbl_DbLineBuf[debugger_buffer_pos++] = 0;
putchar('\n');
AcpiDbCommandDispatch(AcpiGbl_DbLineBuf, NULL, NULL);
debugger_pre_cmd();
send0(MSG_ACPI_DEBUGGER_CMD, rcpt);
break;
case MSG_ACPI_DEBUGGER_CLR_BUFFER:
debugger_pre_cmd();
send0(MSG_ACPI_DEBUGGER_CLR_BUFFER, rcpt);
break;
case MSG_REG_IRQ:
RegIRQ(rcpt, arg);
continue;
case MSG_IRQ_ACK:
AckIRQ(rcpt);
continue;
}
// TODO Handle other stuff.
if (rcpt == 0x100)
{
hmod(rcpt, 0, 0);
}
}
__builtin_unreachable();
failed:
printf("ACPI failed :( (status %x)\n", status);
abort();
}
