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/* SPDX-License-Identifier: GPL-2.0-only */
#include <device/device.h>
#include <device/pci_def.h>
#include <intelblocks/pcie_rp.h>
#include <soc/pci_devs.h>
#include <stdbool.h>
#define CPU_CPIE_VW_IDX_BASE 24
static const struct pcie_rp_group pch_lp_rp_groups[] = {
{ .slot = PCH_DEV_SLOT_PCIE, .count = 8, .lcap_port_base = 1 },
{ .slot = PCH_DEV_SLOT_PCIE_1, .count = 4, .lcap_port_base = 1 },
{ 0 }
};
static const struct pcie_rp_group pch_h_rp_groups[] = {
{ .slot = PCH_DEV_SLOT_PCIE, .count = 8, .lcap_port_base = 1 },
{ .slot = PCH_DEV_SLOT_PCIE_1, .count = 8, .lcap_port_base = 1 },
{ .slot = PCH_DEV_SLOT_PCIE_2, .count = 8, .lcap_port_base = 1 },
{ 0 }
};
static const struct pcie_rp_group cpu_rp_groups[] = {
{ .slot = SA_DEV_SLOT_PEG, .start = 0, .count = 3, .lcap_port_base = 1 },
{ .slot = SA_DEV_SLOT_CPU_PCIE, .start = 0, .count = 1, .lcap_port_base = 1 },
{ 0 }
};
static bool is_part_of_group(const struct device *dev,
const struct pcie_rp_group *groups)
{
if (dev->path.type != DEVICE_PATH_PCI)
return false;
const unsigned int slot_to_find = PCI_SLOT(dev->path.pci.devfn);
const unsigned int fn_to_find = PCI_FUNC(dev->path.pci.devfn);
const struct pcie_rp_group *group;
unsigned int i;
unsigned int fn;
for (group = groups; group->count; ++group) {
for (i = 0, fn = rp_start_fn(group); i < group->count; i++, fn++) {
if (slot_to_find == group->slot && fn_to_find == fn)
return true;
}
}
return false;
}
const struct pcie_rp_group *soc_get_pch_rp_groups(void)
{
if (CONFIG(SOC_INTEL_TIGERLAKE_PCH_H))
return pch_h_rp_groups;
else
return pch_lp_rp_groups;
}
enum pcie_rp_type soc_get_pcie_rp_type(const struct device *dev)
{
const struct pcie_rp_group *pch_rp_groups = soc_get_pch_rp_groups();
if (is_part_of_group(dev, pch_rp_groups))
return PCIE_RP_PCH;
if (is_part_of_group(dev, cpu_rp_groups))
return PCIE_RP_CPU;
return PCIE_RP_UNKNOWN;
}
int soc_get_cpu_rp_vw_idx(const struct device *dev)
{
if (dev->path.type != DEVICE_PATH_PCI)
return -1;
switch (dev->path.pci.devfn) {
case SA_DEVFN_PEG1:
return CPU_CPIE_VW_IDX_BASE + 2;
case SA_DEVFN_PEG2:
return CPU_CPIE_VW_IDX_BASE + 1;
case SA_DEVFN_PEG3:
return CPU_CPIE_VW_IDX_BASE;
case SA_DEVFN_CPU_PCIE:
return CPU_CPIE_VW_IDX_BASE + 3;
default:
return -1;
}
}
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