diff options
Diffstat (limited to 'src/soc/intel/fsp_baytrail/lpss.c')
| -rw-r--r-- | src/soc/intel/fsp_baytrail/lpss.c | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/src/soc/intel/fsp_baytrail/lpss.c b/src/soc/intel/fsp_baytrail/lpss.c deleted file mode 100644 index 2ad6fb3804..0000000000 --- a/src/soc/intel/fsp_baytrail/lpss.c +++ /dev/null @@ -1,152 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2013 Google Inc. - * - * 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 <stdint.h> -#include <cbmem.h> -#include <console/console.h> -#include <device/device.h> -#include <device/pci.h> -#include <device/pci_ids.h> -#include <reg_script.h> - -#include <soc/iosf.h> -#include <soc/nvs.h> -#include <soc/pci_devs.h> -#include <soc/ramstage.h> - -#include "chip.h" - -static void dev_enable_acpi_mode(struct device *dev, int iosf_reg, int nvs_index) -{ - struct reg_script ops[] = { - /* Disable PCI interrupt, enable Memory and Bus Master */ - REG_PCI_OR32(PCI_COMMAND, - PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | (1<<10)), - /* Enable ACPI mode */ - REG_IOSF_OR(IOSF_PORT_LPSS, iosf_reg, - LPSS_CTL_PCI_CFG_DIS | LPSS_CTL_ACPI_INT_EN), - REG_SCRIPT_END - }; - struct resource *bar; - global_nvs_t *gnvs; - - /* Find ACPI NVS to update BARs */ - gnvs = (global_nvs_t *)cbmem_find(CBMEM_ID_ACPI_GNVS); - if (!gnvs) { - printk(BIOS_ERR, "Unable to locate Global NVS\n"); - return; - } - - /* Save BAR0 and BAR1 to ACPI NVS */ - bar = find_resource(dev, PCI_BASE_ADDRESS_0); - if (bar) - gnvs->dev.lpss_bar0[nvs_index] = (u32)bar->base; - - bar = find_resource(dev, PCI_BASE_ADDRESS_1); - if (bar) - gnvs->dev.lpss_bar1[nvs_index] = (u32)bar->base; - - /* Device is enabled in ACPI mode */ - gnvs->dev.lpss_en[nvs_index] = 1; - - /* Put device in ACPI mode */ - reg_script_run_on_dev(dev, ops); -} - -static void dev_enable_snoop_and_pm(struct device *dev, int iosf_reg) -{ - struct reg_script ops[] = { - REG_IOSF_RMW(IOSF_PORT_LPSS, iosf_reg, - ~(LPSS_CTL_SNOOP | LPSS_CTL_NOSNOOP), - LPSS_CTL_SNOOP | LPSS_CTL_PM_CAP_PRSNT), - REG_SCRIPT_END, - }; - - reg_script_run_on_dev(dev, ops); -} - -static void dev_ctl_reg(struct device *dev, int *iosf_reg, int *nvs_index) -{ - *iosf_reg = -1; - *nvs_index = -1; -#define SET_IOSF_REG(name_) \ - case PCI_DEVFN(name_ ## _DEV, name_ ## _FUNC): \ - *iosf_reg = LPSS_ ## name_ ## _CTL; \ - *nvs_index = LPSS_NVS_ ## name_ - - switch (dev->path.pci.devfn) { - SET_IOSF_REG(SIO_DMA1); - break; - SET_IOSF_REG(SIO_DMA2); - break; - SET_IOSF_REG(PWM1); - break; - SET_IOSF_REG(PWM2); - break; - SET_IOSF_REG(HSUART1); - break; - SET_IOSF_REG(HSUART2); - break; - SET_IOSF_REG(SPI); - break; - } -} - -static void lpss_init(struct device *dev) -{ - struct soc_intel_fsp_baytrail_config *config = config_of(dev); - int iosf_reg, nvs_index; - - dev_ctl_reg(dev, &iosf_reg, &nvs_index); - - if (iosf_reg < 0) { - int slot = PCI_SLOT(dev->path.pci.devfn); - int func = PCI_FUNC(dev->path.pci.devfn); - printk(BIOS_DEBUG, "Could not find iosf_reg for %02x.%01x\n", - slot, func); - return; - } - dev_enable_snoop_and_pm(dev, iosf_reg); - - if (config->PcdLpssSioEnablePciMode == LPSS_PCI_MODE_DISABLE) - dev_enable_acpi_mode(dev, iosf_reg, nvs_index); -} - -static struct device_operations device_ops = { - .read_resources = pci_dev_read_resources, - .set_resources = pci_dev_set_resources, - .enable_resources = pci_dev_enable_resources, - .init = lpss_init, - .enable = NULL, - .scan_bus = NULL, - .ops_pci = &soc_pci_ops, -}; - -static const unsigned short pci_device_ids[] = { - SIO_DMA1_DEVID, - SIO_DMA2_DEVID, - PWM1_DEVID, - PWM2_DEVID, - HSUART1_DEVID, - HSUART2_DEVID, - SPI_DEVID, - 0, -}; - -static const struct pci_driver southcluster __pci_driver = { - .ops = &device_ops, - .vendor = PCI_VENDOR_ID_INTEL, - .devices = pci_device_ids, -}; |