| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| |
| #include <stdint.h> |
| #include <device/pci_ops.h> |
| #include <device/pci.h> |
| #include <device/pci_def.h> |
| #include <device/pci_ids.h> |
| #include "i82371eb.h" |
| |
| void enable_pm(void) |
| { |
| pci_devfn_t dev; |
| u8 reg8; |
| u16 reg16; |
| |
| /* Get the SMBus/PM device of the 82371AB/EB/MB. */ |
| dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_INTEL, |
| PCI_DEVICE_ID_INTEL_82371AB_SMB_ACPI), 0); |
| |
| /* Set the PM I/O base. */ |
| pci_write_config32(dev, PMBA, DEFAULT_PMBASE | 1); |
| |
| /* Enable access to the PM I/O space. */ |
| reg16 = pci_read_config16(dev, PCI_COMMAND); |
| reg16 |= PCI_COMMAND_IO; |
| pci_write_config16(dev, PCI_COMMAND, reg16); |
| |
| /* PM I/O Space Enable (PMIOSE). */ |
| reg8 = pci_read_config8(dev, PMREGMISC); |
| reg8 |= PMIOSE; |
| pci_write_config8(dev, PMREGMISC, reg8); |
| } |