soc/mediatek: Add chip config for setting PCIe config
Add chip config for setting PCIe config. TEST=Build pass and boot up to kernel successfully via SSD on Dojo board, here is the SSD information in boot log: == NVME IDENTIFY CONTROLLER DATA == PCI VID : 0x15b7 PCI SSVID : 0x15b7 SN : 21517J440114 MN : WDC PC SN530 SDBPTPZ-256G-1006 RAB : 0x4 AERL : 0x7 SQES : 0x66 CQES : 0x44 NN : 0x1 Identified NVMe model WDC PC SN530 SDBPTPZ-256G-1006 BUG=b:178565024 Signed-off-by: Jianjun Wang <jianjun.wang@mediatek.com> Change-Id: Icff83f2a9f76862065987a74cfcc7e511be80a20 Reviewed-on: https://review.coreboot.org/c/coreboot/+/62791 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Yu-Ping Wu <yupingso@google.com>
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d59b3dd085
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c0808b6497
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@ -13,12 +13,10 @@ struct mtk_pcie_mmio_res {
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unsigned long type;
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unsigned long type;
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};
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};
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struct mtk_pcie_controller {
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struct mtk_pcie_config {
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uintptr_t base; /* MAC physical address */
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uintptr_t base; /* MAC physical address */
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int (*phy_init)(void);
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const struct mtk_pcie_mmio_res mmio_res_io;
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void (*reset)(uintptr_t base, bool enable);
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const struct mtk_pcie_mmio_res mmio_res_mem;
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const struct mtk_pcie_mmio_res *mmio_res_io;
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const struct mtk_pcie_mmio_res *mmio_res_mem;
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};
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};
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void mtk_pcie_domain_read_resources(struct device *dev);
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void mtk_pcie_domain_read_resources(struct device *dev);
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@ -13,6 +13,7 @@
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#include <soc/addressmap.h>
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#include <soc/addressmap.h>
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#include <soc/pcie.h>
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#include <soc/pcie.h>
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#include <soc/pcie_common.h>
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#include <soc/pcie_common.h>
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#include <soc/soc_chip.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include <types.h>
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#include <types.h>
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@ -64,7 +65,7 @@
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#define PCIE_ATR_TLP_TYPE_MEM PCIE_ATR_TLP_TYPE(0)
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#define PCIE_ATR_TLP_TYPE_MEM PCIE_ATR_TLP_TYPE(0)
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#define PCIE_ATR_TLP_TYPE_IO PCIE_ATR_TLP_TYPE(2)
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#define PCIE_ATR_TLP_TYPE_IO PCIE_ATR_TLP_TYPE(2)
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static struct mtk_pcie_controller pcie_ctrl;
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static const struct mtk_pcie_config *pcie_ctrl;
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/* LTSSM state in PCIE_LTSSM_STATUS_REG bit[28:24] */
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/* LTSSM state in PCIE_LTSSM_STATUS_REG bit[28:24] */
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static const char *const ltssm_str[] = {
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static const char *const ltssm_str[] = {
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@ -105,56 +106,9 @@ volatile union pci_bank *pci_map_bus(pci_devfn_t dev)
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bus = PCI_DEV2SEGBUS(dev);
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bus = PCI_DEV2SEGBUS(dev);
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val = PCIE_CFG_HEADER(bus, devfn);
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val = PCIE_CFG_HEADER(bus, devfn);
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write32p(pcie_ctrl.base + PCIE_CFGNUM_REG, val);
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write32p(pcie_ctrl->base + PCIE_CFGNUM_REG, val);
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return (void *)(pcie_ctrl.base + PCIE_CFG_OFFSET_ADDR);
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return (void *)(pcie_ctrl->base + PCIE_CFG_OFFSET_ADDR);
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}
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static int mtk_pcie_startup_port(struct mtk_pcie_controller *ctrl)
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{
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uint32_t val;
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size_t tries = 0;
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const char *ltssm_state;
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/* Set as RC mode */
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val = read32p(ctrl->base + PCIE_SETTING_REG);
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val |= PCIE_RC_MODE;
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write32p(ctrl->base + PCIE_SETTING_REG, val);
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/* Set class code */
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val = read32p(ctrl->base + PCIE_PCI_IDS_1);
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val &= ~GENMASK(31, 8);
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val |= PCI_CLASS(PCI_CLASS_BRIDGE_PCI << 8);
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write32p(ctrl->base + PCIE_PCI_IDS_1, val);
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/* Mask all INTx interrupts */
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val = read32p(ctrl->base + PCIE_INT_ENABLE_REG);
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val &= ~PCIE_INTX_ENABLE;
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write32p(ctrl->base + PCIE_INT_ENABLE_REG, val);
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if (!ctrl->reset) {
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printk(BIOS_ERR, "%s: Missing reset function\n", __func__);
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return -1;
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}
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/* De-assert reset signals */
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ctrl->reset(ctrl->base + PCIE_RST_CTRL_REG, false);
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if (!retry(100,
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(tries++, read32p(ctrl->base + PCIE_LINK_STATUS_REG) &
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PCIE_CTRL_LINKUP), mdelay(1))) {
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val = read32p(ctrl->base + PCIE_LTSSM_STATUS_REG);
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ltssm_state = PCIE_LTSSM_STATE(val) >= ARRAY_SIZE(ltssm_str) ?
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"Unknown state" : ltssm_str[PCIE_LTSSM_STATE(val)];
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printk(BIOS_ERR, "%s: PCIe link down, current ltssm state: %s\n",
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__func__, ltssm_state);
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return -1;
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}
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printk(BIOS_INFO, "%s: PCIe link up success (%ld tries)\n", __func__,
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tries);
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return 0;
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}
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}
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static int mtk_pcie_set_trans_window(struct device *dev, uintptr_t table,
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static int mtk_pcie_set_trans_window(struct device *dev, uintptr_t table,
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@ -210,29 +164,31 @@ static void mtk_pcie_domain_new_res(struct device *dev, unsigned int index,
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void mtk_pcie_domain_read_resources(struct device *dev)
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void mtk_pcie_domain_read_resources(struct device *dev)
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{
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{
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struct mtk_pcie_controller *ctrl = dev->chip_info;
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const mtk_soc_config_t *config = config_of(dev);
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const struct mtk_pcie_config *conf = &config->pcie_config;
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mtk_pcie_domain_new_res(dev, IOINDEX_SUBTRACTIVE(0, 0),
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mtk_pcie_domain_new_res(dev, IOINDEX_SUBTRACTIVE(0, 0),
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ctrl->mmio_res_io);
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&conf->mmio_res_io);
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mtk_pcie_domain_new_res(dev, IOINDEX_SUBTRACTIVE(1, 0),
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mtk_pcie_domain_new_res(dev, IOINDEX_SUBTRACTIVE(1, 0),
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ctrl->mmio_res_mem);
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&conf->mmio_res_mem);
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}
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}
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void mtk_pcie_domain_set_resources(struct device *dev)
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void mtk_pcie_domain_set_resources(struct device *dev)
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{
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{
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struct mtk_pcie_controller *ctrl = dev->chip_info;
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const mtk_soc_config_t *config = config_of(dev);
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const struct mtk_pcie_config *conf = &config->pcie_config;
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uintptr_t table;
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uintptr_t table;
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/* Initialize I/O space constraints. */
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/* Initialize I/O space constraints. */
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table = ctrl->base + PCIE_TRANS_TABLE_BASE_REG;
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table = conf->base + PCIE_TRANS_TABLE_BASE_REG;
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if (mtk_pcie_set_trans_window(dev, table, ctrl->mmio_res_io) < 0)
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if (mtk_pcie_set_trans_window(dev, table, &conf->mmio_res_io) < 0)
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printk(BIOS_ERR, "%s: Failed to set IO window\n", __func__);
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printk(BIOS_ERR, "%s: Failed to set IO window\n", __func__);
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/* Initialize memory resources constraints. */
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/* Initialize memory resources constraints. */
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table = ctrl->base + PCIE_TRANS_TABLE_BASE_REG +
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table = conf->base + PCIE_TRANS_TABLE_BASE_REG +
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PCIE_ATR_TLB_SET_OFFSET;
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PCIE_ATR_TLB_SET_OFFSET;
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if (mtk_pcie_set_trans_window(dev, table, ctrl->mmio_res_mem) < 0)
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if (mtk_pcie_set_trans_window(dev, table, &conf->mmio_res_mem) < 0)
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printk(BIOS_ERR, "%s: Failed to set MEM window\n", __func__);
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printk(BIOS_ERR, "%s: Failed to set MEM window\n", __func__);
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pci_domain_set_resources(dev);
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pci_domain_set_resources(dev);
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@ -240,10 +196,43 @@ void mtk_pcie_domain_set_resources(struct device *dev)
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void mtk_pcie_domain_enable(struct device *dev)
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void mtk_pcie_domain_enable(struct device *dev)
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{
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{
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mtk_pcie_get_hw_info(&pcie_ctrl);
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const mtk_soc_config_t *config = config_of(dev);
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const char *ltssm_state;
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size_t tries = 0;
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uint32_t val;
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if (mtk_pcie_startup_port(&pcie_ctrl) < 0)
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pcie_ctrl = &config->pcie_config;
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/* Set as RC mode */
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val = read32p(pcie_ctrl->base + PCIE_SETTING_REG);
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val |= PCIE_RC_MODE;
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write32p(pcie_ctrl->base + PCIE_SETTING_REG, val);
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/* Set class code */
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val = read32p(pcie_ctrl->base + PCIE_PCI_IDS_1);
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val &= ~GENMASK(31, 8);
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val |= PCI_CLASS(PCI_CLASS_BRIDGE_PCI << 8);
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write32p(pcie_ctrl->base + PCIE_PCI_IDS_1, val);
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/* Mask all INTx interrupts */
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val = read32p(pcie_ctrl->base + PCIE_INT_ENABLE_REG);
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val &= ~PCIE_INTX_ENABLE;
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write32p(pcie_ctrl->base + PCIE_INT_ENABLE_REG, val);
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/* De-assert reset signals */
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mtk_pcie_reset(pcie_ctrl->base + PCIE_RST_CTRL_REG, false);
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if (!retry(100,
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(tries++, read32p(pcie_ctrl->base + PCIE_LINK_STATUS_REG) &
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PCIE_CTRL_LINKUP), mdelay(1))) {
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val = read32p(pcie_ctrl->base + PCIE_LTSSM_STATUS_REG);
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ltssm_state = PCIE_LTSSM_STATE(val) >= ARRAY_SIZE(ltssm_str) ?
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"Unknown state" : ltssm_str[PCIE_LTSSM_STATE(val)];
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printk(BIOS_ERR, "%s: PCIe link down, current ltssm state: %s\n",
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__func__, ltssm_state);
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return;
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return;
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}
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dev->chip_info = &pcie_ctrl;
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printk(BIOS_INFO, "%s: PCIe link up success (%ld tries)\n", __func__,
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tries);
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}
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}
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@ -0,0 +1,14 @@
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/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef SOC_MEDIATEK_CHIP_H
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#define SOC_MEDIATEK_CHIP_H
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#include <soc/pcie_common.h>
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struct soc_mediatek_mt8195_config {
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struct mtk_pcie_config pcie_config;
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};
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typedef struct soc_mediatek_mt8195_config mtk_soc_config_t;
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#endif /* SOC_MEDIATEK_CHIP_H */
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@ -5,7 +5,7 @@
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#include <soc/pcie_common.h>
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#include <soc/pcie_common.h>
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void mtk_pcie_reset(uintptr_t reg, bool enable);
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void mtk_pcie_pre_init(void);
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void mtk_pcie_pre_init(void);
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void mtk_pcie_get_hw_info(struct mtk_pcie_controller *ctrl);
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#endif
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#endif
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@ -0,0 +1,8 @@
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/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef SOC_MEDIATEK_SOC_CHIP_H
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#define SOC_MEDIATEK_SOC_CHIP_H
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#include "../../chip.h"
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#endif /* SOC_MEDIATEK_SOC_CHIP_H */
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@ -19,23 +19,6 @@
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#define PCIE_BRG_RSTB BIT(2)
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#define PCIE_BRG_RSTB BIT(2)
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#define PCIE_PE_RSTB BIT(3)
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#define PCIE_PE_RSTB BIT(3)
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/* MMIO range (64MB): 0x20000000 ~ 0x24000000 */
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/* Some devices still need io ranges, reserve 16MB for compatibility */
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static const struct mtk_pcie_mmio_res pcie_mmio_res_io = {
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.cpu_addr = 0x20000000,
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.pci_addr = 0x20000000,
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.size = 16 * MiB,
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.type = IORESOURCE_IO,
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};
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static const struct mtk_pcie_mmio_res pcie_mmio_res_mem = {
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.cpu_addr = 0x21000000,
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.pci_addr = 0x21000000,
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.size = 48 * MiB,
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.type = IORESOURCE_MEM,
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};
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struct pad_func {
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struct pad_func {
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gpio_t gpio;
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gpio_t gpio;
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u8 func;
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u8 func;
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@ -67,7 +50,7 @@ static void mtk_pcie_set_pinmux(uint8_t port)
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}
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}
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}
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}
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static void mtk_pcie_reset(uintptr_t reg, bool enable)
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void mtk_pcie_reset(uintptr_t reg, bool enable)
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{
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{
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uint32_t val;
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uint32_t val;
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/* Assert all reset signals at early stage */
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/* Assert all reset signals at early stage */
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mtk_pcie_reset(PCIE_RST_CTRL_REG, true);
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mtk_pcie_reset(PCIE_RST_CTRL_REG, true);
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}
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}
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void mtk_pcie_get_hw_info(struct mtk_pcie_controller *ctrl)
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{
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ctrl->base = PCIE_REG_BASE_PORT0;
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ctrl->mmio_res_io = &pcie_mmio_res_io;
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ctrl->mmio_res_mem = &pcie_mmio_res_mem;
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ctrl->reset = &mtk_pcie_reset;
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}
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