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/*
* This file is part of the coreboot project.
*
* Copyright 2017 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; 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 <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_def.h>
#include <device/pci_ids.h>
#include <device/spi.h>
#include <intelblocks/fast_spi.h>
#include <intelblocks/gspi.h>
#include <intelblocks/spi.h>
#include <soc/ramstage.h>
#include <soc/pci_devs.h>
#include <spi-generic.h>
int spi_soc_devfn_to_bus(unsigned int devfn)
{
switch (devfn) {
case PCH_DEVFN_SPI:
return 0;
case PCH_DEVFN_GSPI0:
return 1;
case PCH_DEVFN_GSPI1:
return 2;
case PCH_DEVFN_GSPI2:
return 3;
}
return -1;
}
int spi_soc_bus_to_devfn(unsigned int bus)
{
switch (bus) {
case 0:
return PCH_DEVFN_SPI;
case 1:
return PCH_DEVFN_GSPI0;
case 2:
return PCH_DEVFN_GSPI1;
case 3:
return PCH_DEVFN_GSPI2;
}
return -1;
}
const struct spi_ctrlr_buses spi_ctrlr_bus_map[] = {
{ .ctrlr = &fast_spi_flash_ctrlr, .bus_start = 0, .bus_end = 0 },
#if !ENV_SMM
{ .ctrlr = &gspi_ctrlr, .bus_start = 1,
.bus_end = 1 + (CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI_MAX - 1)},
#endif
};
const size_t spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map);
#if ENV_RAMSTAGE
static int spi_dev_to_bus(struct device *dev)
{
return spi_soc_devfn_to_bus(dev->path.pci.devfn);
}
static struct spi_bus_operations spi_bus_ops = {
.dev_to_bus = &spi_dev_to_bus,
};
static struct device_operations spi_dev_ops = {
.read_resources = &pci_dev_read_resources,
.set_resources = &pci_dev_set_resources,
.enable_resources = &pci_dev_enable_resources,
.scan_bus = &scan_generic_bus,
.ops_spi_bus = &spi_bus_ops,
};
static const unsigned short pci_device_ids[] = {
PCI_DEVICE_ID_INTEL_CNL_HWSEQ_SPI,
PCI_DEVICE_ID_INTEL_CNL_SPI0,
PCI_DEVICE_ID_INTEL_CNL_SPI1,
PCI_DEVICE_ID_INTEL_CNL_SPI2,
0
};
static const struct pci_driver pch_spi __pci_driver = {
.ops = &spi_dev_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.devices = pci_device_ids,
};
#endif
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