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#include <xen/config.h>
#include <xen/pci.h>
#include <xen/acpi.h>
#include <acpi/acpi.h>
void acpi_reboot(void)
{
struct acpi_generic_address *rr;
u8 reset_value;
rr = &acpi_gbl_FADT.reset_register;
/* Is the reset register supported? The spec says we should be
* checking the bit width and bit offset, but Windows ignores
* these fields */
if (!(acpi_gbl_FADT.flags & ACPI_FADT_RESET_REGISTER))
return;
reset_value = acpi_gbl_FADT.reset_value;
/* The reset register can only exist in I/O, Memory or PCI config space
* on a device on bus 0. */
switch (rr->space_id) {
case ACPI_ADR_SPACE_PCI_CONFIG:
printk("Resetting with ACPI PCI RESET_REG.\n");
/* Write the value that resets us. */
pci_conf_write8(0, 0,
(rr->address >> 32) & 31,
(rr->address >> 16) & 7,
(rr->address & 255),
reset_value);
break;
case ACPI_ADR_SPACE_SYSTEM_MEMORY:
case ACPI_ADR_SPACE_SYSTEM_IO:
printk("Resetting with ACPI MEMORY or I/O RESET_REG.\n");
acpi_hw_low_level_write(8, reset_value, rr);
break;
}
}
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