| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2017 Intel Corp. |
| * |
| * 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; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * 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 <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <intelblocks/lpc_lib.h> |
| #include <soc/acpi.h> |
| #include <soc/pm.h> |
| |
| /* Common weak definition, needs to be implemented in each soc LPC driver. */ |
| __attribute__((weak)) void lpc_init(struct device *dev) { /* no-op */ } |
| |
| static void soc_lpc_add_io_resources(device_t dev) |
| { |
| struct resource *res; |
| |
| /* Add the default claimed legacy IO range for the LPC device. */ |
| res = new_resource(dev, 0); |
| res->base = 0; |
| res->size = 0x1000; |
| res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; |
| } |
| |
| static void soc_lpc_read_resources(device_t dev) |
| { |
| /* Get the PCI resources of this device. */ |
| pci_dev_read_resources(dev); |
| |
| /* Add IO resources to LPC. */ |
| soc_lpc_add_io_resources(dev); |
| } |
| |
| static void set_child_resources(struct device *dev); |
| |
| static void loop_resources(struct device *dev) |
| { |
| struct resource *res; |
| |
| for (res = dev->resource_list; res; res = res->next) { |
| if (res->flags & IORESOURCE_IO) |
| lpc_open_pmio_window(res->base, res->size); |
| |
| if (res->flags & IORESOURCE_MEM) { |
| /* Check if this is already decoded. */ |
| if (lpc_fits_fixed_mmio_window(res->base, res->size)) |
| continue; |
| |
| lpc_open_mmio_window(res->base, res->size); |
| } |
| } |
| set_child_resources(dev); |
| } |
| |
| /* |
| * Loop through all the child devices' resources, and open up windows to the |
| * LPC bus, as appropriate. |
| */ |
| static void set_child_resources(struct device *dev) |
| { |
| struct bus *link; |
| struct device *child; |
| |
| for (link = dev->link_list; link; link = link->next) { |
| for (child = link->children; child; child = child->sibling) |
| loop_resources(child); |
| } |
| } |
| |
| static void set_resources(device_t dev) |
| { |
| pci_dev_set_resources(dev); |
| |
| /* Now open up windows to devices which have declared resources. */ |
| set_child_resources(dev); |
| } |
| |
| static struct device_operations device_ops = { |
| .read_resources = soc_lpc_read_resources, |
| .set_resources = set_resources, |
| .enable_resources = pci_dev_enable_resources, |
| .write_acpi_tables = southbridge_write_acpi_tables, |
| .acpi_inject_dsdt_generator = southbridge_inject_dsdt, |
| .init = lpc_init, |
| .scan_bus = scan_lpc_bus, |
| }; |
| |
| static const unsigned short pci_device_ids[] = { |
| PCI_DEVICE_ID_INTEL_SPT_LP_SAMPLE, |
| PCI_DEVICE_ID_INTEL_SPT_LP_U_BASE, |
| PCI_DEVICE_ID_INTEL_SPT_LP_U_PREMIUM, |
| PCI_DEVICE_ID_INTEL_SPT_LP_Y_PREMIUM, |
| PCI_DEVICE_ID_INTEL_KBP_H_C236, |
| PCI_DEVICE_ID_INTEL_KBP_H_PREMIUM, |
| PCI_DEVICE_ID_INTEL_KBP_H_QM170, |
| PCI_DEVICE_ID_INTEL_SPT_LP_Y_PREMIUM_HDCP22, |
| PCI_DEVICE_ID_INTEL_SPT_LP_U_PREMIUM_HDCP22, |
| PCI_DEVICE_ID_INTEL_KBP_LP_SUPER_SKU, |
| PCI_DEVICE_ID_INTEL_KBP_LP_U_PREMIUM, |
| PCI_DEVICE_ID_INTEL_KBP_LP_Y_PREMIUM, |
| PCI_DEVICE_ID_INTEL_APL_LPC, |
| PCI_DEVICE_ID_INTEL_GLK_LPC, |
| 0 |
| }; |
| |
| static const struct pci_driver soc_lpc __pci_driver = { |
| .ops = &device_ops, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .devices = pci_device_ids, |
| }; |