diff options
Diffstat (limited to 'src/soc/mediatek')
| -rw-r--r-- | src/soc/mediatek/common/pcie.c | 44 |
1 files changed, 29 insertions, 15 deletions
diff --git a/src/soc/mediatek/common/pcie.c b/src/soc/mediatek/common/pcie.c index 4ed8b93b25..c46b53f516 100644 --- a/src/soc/mediatek/common/pcie.c +++ b/src/soc/mediatek/common/pcie.c @@ -65,8 +65,6 @@ #define PCIE_ATR_TLP_TYPE_MEM PCIE_ATR_TLP_TYPE(0) #define PCIE_ATR_TLP_TYPE_IO PCIE_ATR_TLP_TYPE(2) -static const struct mtk_pcie_config *pcie_ctrl; - /* LTSSM state in PCIE_LTSSM_STATUS_REG bit[28:24] */ static const char *const ltssm_str[] = { "detect.quiet", /* 0x00 */ @@ -98,17 +96,34 @@ static const char *const ltssm_str[] = { "hotreset", /* 0x1A */ }; +static uintptr_t mtk_pcie_get_controller_base(pci_devfn_t devfn) +{ + struct device *root_dev; + const mtk_soc_config_t *config; + static uintptr_t base = 0; + + if (!base) { + root_dev = pcidev_path_on_root(devfn); + config = config_of(root_dev); + base = config->pcie_config.base; + } + + return base; +} + volatile union pci_bank *pci_map_bus(pci_devfn_t dev) { u32 val, devfn, bus; + uintptr_t base; devfn = PCI_DEV2DEVFN(dev); bus = PCI_DEV2SEGBUS(dev); val = PCIE_CFG_HEADER(bus, devfn); - write32p(pcie_ctrl->base + PCIE_CFGNUM_REG, val); + base = mtk_pcie_get_controller_base(dev); + write32p(base + PCIE_CFGNUM_REG, val); - return (void *)(pcie_ctrl->base + PCIE_CFG_OFFSET_ADDR); + return (void *)(base + PCIE_CFG_OFFSET_ADDR); } static int mtk_pcie_set_trans_window(struct device *dev, uintptr_t table, @@ -197,35 +212,34 @@ void mtk_pcie_domain_set_resources(struct device *dev) void mtk_pcie_domain_enable(struct device *dev) { const mtk_soc_config_t *config = config_of(dev); + const struct mtk_pcie_config *conf = &config->pcie_config; const char *ltssm_state; size_t tries = 0; uint32_t val; - pcie_ctrl = &config->pcie_config; - /* Set as RC mode */ - val = read32p(pcie_ctrl->base + PCIE_SETTING_REG); + val = read32p(conf->base + PCIE_SETTING_REG); val |= PCIE_RC_MODE; - write32p(pcie_ctrl->base + PCIE_SETTING_REG, val); + write32p(conf->base + PCIE_SETTING_REG, val); /* Set class code */ - val = read32p(pcie_ctrl->base + PCIE_PCI_IDS_1); + val = read32p(conf->base + PCIE_PCI_IDS_1); val &= ~GENMASK(31, 8); val |= PCI_CLASS(PCI_CLASS_BRIDGE_PCI << 8); - write32p(pcie_ctrl->base + PCIE_PCI_IDS_1, val); + write32p(conf->base + PCIE_PCI_IDS_1, val); /* Mask all INTx interrupts */ - val = read32p(pcie_ctrl->base + PCIE_INT_ENABLE_REG); + val = read32p(conf->base + PCIE_INT_ENABLE_REG); val &= ~PCIE_INTX_ENABLE; - write32p(pcie_ctrl->base + PCIE_INT_ENABLE_REG, val); + write32p(conf->base + PCIE_INT_ENABLE_REG, val); /* De-assert reset signals */ - mtk_pcie_reset(pcie_ctrl->base + PCIE_RST_CTRL_REG, false); + mtk_pcie_reset(conf->base + PCIE_RST_CTRL_REG, false); if (!retry(100, - (tries++, read32p(pcie_ctrl->base + PCIE_LINK_STATUS_REG) & + (tries++, read32p(conf->base + PCIE_LINK_STATUS_REG) & PCIE_CTRL_LINKUP), mdelay(1))) { - val = read32p(pcie_ctrl->base + PCIE_LTSSM_STATUS_REG); + val = read32p(conf->base + PCIE_LTSSM_STATUS_REG); ltssm_state = PCIE_LTSSM_STATE(val) >= ARRAY_SIZE(ltssm_str) ? "Unknown state" : ltssm_str[PCIE_LTSSM_STATE(val)]; printk(BIOS_ERR, "%s: PCIe link down, current ltssm state: %s\n", |