| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2017-2018 Intel Corporation. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <arch/acpi.h> |
| #include <arch/io.h> |
| #include <compiler.h> |
| #include <console/console.h> |
| #include <cpu/x86/smm.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <intelblocks/pmc.h> |
| #include <soc/pci_devs.h> |
| |
| /* SoC overrides */ |
| |
| /* Fill up PMC resource structure inside SoC directory */ |
| __weak int pmc_soc_get_resources( |
| struct pmc_resource_config *cfg) |
| { |
| /* no-op */ |
| return -1; |
| } |
| |
| /* SoC override PMC initialization */ |
| __weak void pmc_soc_init(struct device *dev) |
| { |
| /* no-op */ |
| } |
| |
| static void pch_pmc_add_new_resource(struct device *dev, |
| uint8_t offset, uintptr_t base, size_t size, |
| unsigned long flags) |
| { |
| struct resource *res; |
| res = new_resource(dev, offset); |
| res->base = base; |
| res->size = size; |
| res->flags = flags; |
| } |
| |
| static void pch_pmc_add_mmio_resources(struct device *dev, |
| const struct pmc_resource_config *cfg) |
| { |
| pch_pmc_add_new_resource(dev, cfg->pwrmbase_offset, |
| cfg->pwrmbase_addr, cfg->pwrmbase_size, |
| IORESOURCE_MEM | IORESOURCE_ASSIGNED | |
| IORESOURCE_FIXED | IORESOURCE_RESERVE); |
| } |
| |
| static void pch_pmc_add_io_resources(struct device *dev, |
| const struct pmc_resource_config *cfg) |
| { |
| pch_pmc_add_new_resource(dev, cfg->abase_offset, |
| cfg->abase_addr, cfg->abase_size, |
| IORESOURCE_IO | IORESOURCE_ASSIGNED | |
| IORESOURCE_FIXED); |
| if (IS_ENABLED(CONFIG_PMC_INVALID_READ_AFTER_WRITE)) { |
| /* |
| * The ACPI IO BAR (offset 0x20) is not PCI compliant. We've |
| * observed cases where the BAR reads back as 0, but the IO |
| * window is open. This also means that it will not respond |
| * to PCI probing. |
| */ |
| pci_write_config16(dev, cfg->abase_offset, cfg->abase_addr); |
| /* |
| * In pci_dev_enable_resources, reading IO SPACE ACCESS bit in |
| * STATUSCOMMAND register does not read back the written |
| * value correctly, hence IO access gets disabled. This is |
| * seen in some PMC devices, hence this code makes sure |
| * IO access is available. |
| */ |
| dev->command |= PCI_COMMAND_IO; |
| } |
| } |
| |
| static void pch_pmc_read_resources(struct device *dev) |
| { |
| struct pmc_resource_config pmc_cfg; |
| struct pmc_resource_config *config = &pmc_cfg; |
| |
| if (pmc_soc_get_resources(config) < 0) |
| die("Unable to get PMC controller resource information!"); |
| |
| /* Get the normal PCI resources of this device. */ |
| pci_dev_read_resources(dev); |
| |
| /* Add non-standard MMIO resources. */ |
| pch_pmc_add_mmio_resources(dev, config); |
| |
| /* Add IO resources. */ |
| pch_pmc_add_io_resources(dev, config); |
| } |
| |
| void pmc_set_acpi_mode(void) |
| { |
| if (IS_ENABLED(CONFIG_HAVE_SMI_HANDLER) && !acpi_is_wakeup_s3()) { |
| printk(BIOS_DEBUG, "Disabling ACPI via APMC:\n"); |
| outb(APM_CNT_ACPI_DISABLE, APM_CNT); |
| printk(BIOS_DEBUG, "done.\n"); |
| } |
| } |
| |
| static struct device_operations device_ops = { |
| .read_resources = &pch_pmc_read_resources, |
| .set_resources = &pci_dev_set_resources, |
| .enable_resources = &pci_dev_enable_resources, |
| .init = &pmc_soc_init, |
| .ops_pci = &pci_dev_ops_pci, |
| .scan_bus = &scan_lpc_bus, |
| }; |
| |
| static const unsigned short pci_device_ids[] = { |
| PCI_DEVICE_ID_INTEL_SPT_LP_PMC, |
| PCI_DEVICE_ID_INTEL_SPT_H_PMC, |
| PCI_DEVICE_ID_INTEL_KBP_H_PMC, |
| PCI_DEVICE_ID_INTEL_APL_PMC, |
| PCI_DEVICE_ID_INTEL_GLK_PMC, |
| 0 |
| }; |
| |
| static const struct pci_driver pch_pmc __pci_driver = { |
| .ops = &device_ops, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .devices = pci_device_ids, |
| }; |