diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/meteorlake/fsp_params.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/soc/intel/meteorlake/fsp_params.c b/src/soc/intel/meteorlake/fsp_params.c index eff81762eb..790bf9ca11 100644 --- a/src/soc/intel/meteorlake/fsp_params.c +++ b/src/soc/intel/meteorlake/fsp_params.c @@ -42,6 +42,8 @@ #define DEF_DMVAL 15 #define DEF_DITOVAL 625 +#define MAX_ONBOARD_PCIE_DEVICES 256 + static const struct slot_irq_constraints irq_constraints[] = { { .slot = PCI_DEV_SLOT_PCIE_3, @@ -701,6 +703,70 @@ static void arch_silicon_init_params(FSPS_ARCH_UPD *s_arch_cfg) fsp_debug_event_handler; } +static void evaluate_ssid(const struct device *dev, uint16_t *svid, uint16_t *ssid) +{ + if (!(dev && svid && ssid)) + return; + + *svid = CONFIG_SUBSYSTEM_VENDOR_ID ? : (dev->subsystem_vendor ? : 0x8086); + *ssid = CONFIG_SUBSYSTEM_DEVICE_ID ? : (dev->subsystem_device ? : 0xfffe); +} + +/* + * Programming SSID before FSP-S is important because SSID registers of a few PCIE + * devices (e.g. IPU, Crashlog, XHCI, TCSS_XHCI etc.) are locked after FSP-S hence + * provide a custom SSID (same as DID by default) value via UPD. + */ +static void fill_fsps_pci_ssid_params(FSP_S_CONFIG *s_cfg, + const struct soc_intel_meteorlake_config *config) +{ + struct svid_ssid_init_entry { + union { + struct { + uint64_t reg:12; + uint64_t function:3; + uint64_t device:5; + uint64_t bus:8; + uint64_t ignore1:4; + uint64_t segment:16; + uint64_t ignore2:16; + }; + uint64_t data; + }; + struct { + uint16_t svid; + uint16_t ssid; + }; + uint32_t ignore3; + }; + + static struct svid_ssid_init_entry ssid_table[MAX_ONBOARD_PCIE_DEVICES]; + const struct device *dev; + int i = 0; + + for (dev = all_devices; dev; dev = dev->next) { + if (!(is_dev_enabled(dev) && dev->path.type == DEVICE_PATH_PCI && + dev->bus->secondary == 0)) + continue; + + if (dev->path.pci.devfn == PCI_DEVFN_ROOT) { + evaluate_ssid(dev, &s_cfg->SiCustomizedSvid, &s_cfg->SiCustomizedSsid); + } else { + ssid_table[i].reg = PCI_SUBSYSTEM_VENDOR_ID; + ssid_table[i].device = PCI_SLOT(dev->path.pci.devfn); + ssid_table[i].function = PCI_FUNC(dev->path.pci.devfn); + evaluate_ssid(dev, &ssid_table[i].svid, &ssid_table[i].ssid); + i++; + } + } + + s_cfg->SiSsidTablePtr = (uintptr_t)ssid_table; + s_cfg->SiNumberOfSsidTableEntry = i; + + /* Ensure FSP will program the registers */ + s_cfg->SiSkipSsidProgramming = 0; +} + static void soc_silicon_init_params(FSP_S_CONFIG *s_cfg, struct soc_intel_meteorlake_config *config) { @@ -730,6 +796,7 @@ static void soc_silicon_init_params(FSP_S_CONFIG *s_cfg, fill_fsps_ufs_params, fill_fsps_ai_params, fill_fsps_irq_params, + fill_fsps_pci_ssid_params, }; for (size_t i = 0; i < ARRAY_SIZE(fill_fsps_params); i++) |