| Patrick Georgi | ac95903 | 2020-05-05 22:49:26 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| Uwe Hermann | 0865b4d | 2010-09-19 21:12:05 +0000 | [diff] [blame] | 2 | |
| 3 | #include <stdint.h> |
| Kyösti Mälkki | f1b58b7 | 2019-03-01 13:43:02 +0200 | [diff] [blame] | 4 | #include <device/pci_ops.h> |
| Kyösti Mälkki | 8a41f4b | 2019-02-08 18:14:34 +0200 | [diff] [blame] | 5 | #include <device/pci.h> |
| Uwe Hermann | 0865b4d | 2010-09-19 21:12:05 +0000 | [diff] [blame] | 6 | #include <device/pci_ids.h> |
| 7 | #include "i82371eb.h" |
| 8 | |
| Uwe Hermann | 115c5b9 | 2010-10-09 17:00:18 +0000 | [diff] [blame] | 9 | void enable_pm(void) |
| Uwe Hermann | 0865b4d | 2010-09-19 21:12:05 +0000 | [diff] [blame] | 10 | { |
| Uwe Hermann | 0865b4d | 2010-09-19 21:12:05 +0000 | [diff] [blame] | 11 | u8 reg8; |
| 12 | u16 reg16; |
| 13 | |
| Uwe Hermann | 115c5b9 | 2010-10-09 17:00:18 +0000 | [diff] [blame] | 14 | /* Get the SMBus/PM device of the 82371AB/EB/MB. */ |
| Felix Singer | 43b7f41 | 2022-03-07 04:34:52 +0100 | [diff] [blame] | 15 | const pci_devfn_t dev = pci_locate_device(PCI_ID(PCI_VID_INTEL, |
| 16 | PCI_DID_INTEL_82371AB_SMB_ACPI), 0); |
| Uwe Hermann | 0865b4d | 2010-09-19 21:12:05 +0000 | [diff] [blame] | 17 | |
| Uwe Hermann | 0865b4d | 2010-09-19 21:12:05 +0000 | [diff] [blame] | 18 | /* Set the PM I/O base. */ |
| Tobias Diedrich | e87c38e | 2010-11-27 09:40:16 +0000 | [diff] [blame] | 19 | pci_write_config32(dev, PMBA, DEFAULT_PMBASE | 1); |
| Uwe Hermann | 0865b4d | 2010-09-19 21:12:05 +0000 | [diff] [blame] | 20 | |
| 21 | /* Enable access to the PM I/O space. */ |
| 22 | reg16 = pci_read_config16(dev, PCI_COMMAND); |
| 23 | reg16 |= PCI_COMMAND_IO; |
| 24 | pci_write_config16(dev, PCI_COMMAND, reg16); |
| 25 | |
| 26 | /* PM I/O Space Enable (PMIOSE). */ |
| 27 | reg8 = pci_read_config8(dev, PMREGMISC); |
| 28 | reg8 |= PMIOSE; |
| 29 | pci_write_config8(dev, PMREGMISC, reg8); |
| 30 | } |