| /* 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; |
| } |
| } |