| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <device/device.h> |
| #include <intelblocks/pcie_rp.h> |
| #include <soc/cpu.h> |
| #include <soc/pci_devs.h> |
| #include <soc/pcie.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 }, |
| { .slot = PCH_DEV_SLOT_PCIE_1, .count = 4 }, |
| { 0 } |
| }; |
| |
| static const struct pcie_rp_group pch_m_rp_groups[] = { |
| { .slot = PCH_DEV_SLOT_PCIE, .count = 8 }, |
| { .slot = PCH_DEV_SLOT_PCIE_1, .count = 2 }, |
| { 0 } |
| }; |
| |
| const struct pcie_rp_group *get_pch_pcie_rp_table(void) |
| { |
| if (CONFIG(SOC_INTEL_ALDERLAKE_PCH_M)) |
| return pch_m_rp_groups; |
| |
| return pch_lp_rp_groups; /* Valid for PCH-P and PCH-N */ |
| } |
| |
| /* |
| * ADL-P FSP define CPU RP as below: |
| * RP1: PEG60 : 0:6:0 : x4 CPU Slot |
| * RP2: PEG10 : 0:1:0 : x8 CPU Slot |
| * RP3: PEG62 : 0:6:2 : x4 CPU Slot |
| */ |
| static const struct pcie_rp_group cpu_rp_groups[] = { |
| { .slot = SA_DEV_SLOT_CPU_6, .start = 0, .count = 1 }, |
| { .slot = SA_DEV_SLOT_CPU_1, .start = 0, .count = 1 }, |
| { .slot = SA_DEV_SLOT_CPU_6, .start = 2, .count = 1 }, |
| { 0 } |
| }; |
| |
| static const struct pcie_rp_group cpu_m_rp_groups[] = { |
| { .slot = SA_DEV_SLOT_CPU_6, .start = 0, .count = 1 }, |
| { 0 } |
| }; |
| |
| static const struct pcie_rp_group cpu_n_rp_groups[] = { |
| { 0 } |
| }; |
| |
| const struct pcie_rp_group *get_cpu_pcie_rp_table(void) |
| { |
| if (CONFIG(SOC_INTEL_ALDERLAKE_PCH_M)) |
| return cpu_m_rp_groups; |
| |
| if (CONFIG(SOC_INTEL_ALDERLAKE_PCH_N)) |
| return cpu_n_rp_groups; |
| |
| return cpu_rp_groups; |
| } |
| |
| 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; |
| } |
| |
| enum pcie_rp_type soc_get_pcie_rp_type(const struct device *dev) |
| { |
| if (is_part_of_group(dev, pch_lp_rp_groups)) |
| return PCIE_RP_PCH; |
| |
| if (CONFIG_MAX_CPU_ROOT_PORTS && 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_CPU_PCIE1_0: |
| return CPU_CPIE_VW_IDX_BASE; |
| case SA_DEVFN_CPU_PCIE6_0: |
| return CPU_CPIE_VW_IDX_BASE + 3; |
| case SA_DEVFN_CPU_PCIE6_2: |
| return CPU_CPIE_VW_IDX_BASE + 2; |
| default: |
| return -1; |
| } |
| } |