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/* SPDX-License-Identifier: GPL-2.0-only */
#include <console/console.h>
#include <device/pci.h>
#include <device/pci_ops.h>
#include <device/pci_type.h>
#include <intelblocks/itss.h>
#include <soc/itss.h>
#include <soc/pci_devs.h>
#include <static.h>
#include "ramstage.h"
uint32_t itss_soc_get_on_chip_dev_pir(struct device *dev)
{
/* Check if device is on chip. */
if (dev->upstream->dev->path.type != DEVICE_PATH_DOMAIN)
return 0;
if (!is_pci(dev))
return 0;
const unsigned int devfn = dev->path.pci.devfn;
switch (dev_get_domain_id(dev)) {
case 0:
return PCI_ITSS_PIR(PCI_SLOT(devfn));
case 3:
if (devfn == NIS_DEVFN)
return PCI_ITSS_PIR(25);
break;
case 4:
if (devfn == QAT_1_8_DEVFN)
return PCI_ITSS_PIR(5);
break;
}
printk(BIOS_WARNING, "Unknown PIR for %s\n", dev_path(dev));
return 0;
}
enum pirq itss_soc_get_dev_pirq(struct device *dev)
{
enum pci_pin dev_pin = pci_read_config8(dev, PCI_INTERRUPT_PIN);
if (dev_pin < PCI_INT_A || dev_pin > PCI_INT_D)
return PIRQ_INVALID;
struct device *bridge;
enum pci_pin swizzle_pin;
if (is_dev_on_domain0(dev)) {
/**
* Get the pin asserting from bridge to root.
* This function only applies for devices in domain 0.
*/
swizzle_pin = get_pci_irq_pins(dev, &bridge);
if (swizzle_pin < PCI_INT_A || swizzle_pin > PCI_INT_D)
return PIRQ_INVALID;
/* Device attached to PCH PCIe Root Port need further swizzle. */
if (is_pci_bridge(bridge) && bridge != dev)
swizzle_pin = pciexp_get_rp_irq_pin(bridge, swizzle_pin);
} else if (dev->upstream->dev == DEV_PTR(nis_vrp)) {
bridge = DEV_PTR(nis_vrp);
swizzle_pin = (dev_pin - 1 + PCI_SLOT(dev->path.pci.devfn)) % 4 + 1;
} else if (dev->upstream->dev == DEV_PTR(qat_1_8_vrp)) {
bridge = DEV_PTR(qat_1_8_vrp);
swizzle_pin = (dev_pin - 1 + PCI_SLOT(dev->path.pci.devfn)) % 4 + 1;
} else {
bridge = dev;
swizzle_pin = dev_pin;
}
if (bridge != dev) {
/**
* We can't print `dev` path and `bridge` path in a single `printk()` due to
* restriction of `dev_path()`.
*/
printk(BIOS_DEBUG, "%s %s swizzled to ", dev_path(dev), pin_to_str(dev_pin));
printk(BIOS_DEBUG, "%s %s.\n", dev_path(bridge), pin_to_str(swizzle_pin));
}
return itss_get_on_chip_dev_pirq(bridge, swizzle_pin);
}
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