| /* |
| * Copyright 2014-2015 Freescale Semiconductor, Inc. |
| * Layerscape PCIe driver |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #include <common.h> |
| #include <asm/arch/fsl_serdes.h> |
| #include <pci.h> |
| #include <asm/io.h> |
| #include <errno.h> |
| #include <malloc.h> |
| #ifndef CONFIG_LS102XA |
| #include <asm/arch/fdt.h> |
| #include <asm/arch/soc.h> |
| #endif |
| |
| #ifndef CONFIG_SYS_PCI_MEMORY_BUS |
| #define CONFIG_SYS_PCI_MEMORY_BUS CONFIG_SYS_SDRAM_BASE |
| #endif |
| |
| #ifndef CONFIG_SYS_PCI_MEMORY_PHYS |
| #define CONFIG_SYS_PCI_MEMORY_PHYS CONFIG_SYS_SDRAM_BASE |
| #endif |
| |
| #ifndef CONFIG_SYS_PCI_MEMORY_SIZE |
| #define CONFIG_SYS_PCI_MEMORY_SIZE (2 * 1024 * 1024 * 1024UL) /* 2G */ |
| #endif |
| |
| #ifndef CONFIG_SYS_PCI_EP_MEMORY_BASE |
| #define CONFIG_SYS_PCI_EP_MEMORY_BASE CONFIG_SYS_LOAD_ADDR |
| #endif |
| |
| /* iATU registers */ |
| #define PCIE_ATU_VIEWPORT 0x900 |
| #define PCIE_ATU_REGION_INBOUND (0x1 << 31) |
| #define PCIE_ATU_REGION_OUTBOUND (0x0 << 31) |
| #define PCIE_ATU_REGION_INDEX0 (0x0 << 0) |
| #define PCIE_ATU_REGION_INDEX1 (0x1 << 0) |
| #define PCIE_ATU_REGION_INDEX2 (0x2 << 0) |
| #define PCIE_ATU_REGION_INDEX3 (0x3 << 0) |
| #define PCIE_ATU_CR1 0x904 |
| #define PCIE_ATU_TYPE_MEM (0x0 << 0) |
| #define PCIE_ATU_TYPE_IO (0x2 << 0) |
| #define PCIE_ATU_TYPE_CFG0 (0x4 << 0) |
| #define PCIE_ATU_TYPE_CFG1 (0x5 << 0) |
| #define PCIE_ATU_CR2 0x908 |
| #define PCIE_ATU_ENABLE (0x1 << 31) |
| #define PCIE_ATU_BAR_MODE_ENABLE (0x1 << 30) |
| #define PCIE_ATU_BAR_NUM(bar) ((bar) << 8) |
| #define PCIE_ATU_LOWER_BASE 0x90C |
| #define PCIE_ATU_UPPER_BASE 0x910 |
| #define PCIE_ATU_LIMIT 0x914 |
| #define PCIE_ATU_LOWER_TARGET 0x918 |
| #define PCIE_ATU_BUS(x) (((x) & 0xff) << 24) |
| #define PCIE_ATU_DEV(x) (((x) & 0x1f) << 19) |
| #define PCIE_ATU_FUNC(x) (((x) & 0x7) << 16) |
| #define PCIE_ATU_UPPER_TARGET 0x91C |
| |
| #define PCIE_DBI_RO_WR_EN 0x8bc |
| |
| #define PCIE_LINK_CAP 0x7c |
| #define PCIE_LINK_SPEED_MASK 0xf |
| #define PCIE_LINK_STA 0x82 |
| |
| #define LTSSM_STATE_MASK 0x3f |
| #define LTSSM_PCIE_L0 0x11 /* L0 state */ |
| |
| #define PCIE_DBI_SIZE 0x100000 /* 1M */ |
| |
| #define PCIE_LCTRL0_CFG2_ENABLE (1 << 31) |
| #define PCIE_LCTRL0_VF(vf) ((vf) << 22) |
| #define PCIE_LCTRL0_PF(pf) ((pf) << 16) |
| #define PCIE_LCTRL0_VF_ACTIVE (1 << 21) |
| #define PCIE_LCTRL0_VAL(pf, vf) (PCIE_LCTRL0_PF(pf) | \ |
| PCIE_LCTRL0_VF(vf) | \ |
| ((vf) == 0 ? 0 : PCIE_LCTRL0_VF_ACTIVE) | \ |
| PCIE_LCTRL0_CFG2_ENABLE) |
| |
| #define PCIE_NO_SRIOV_BAR_BASE 0x1000 |
| |
| #define PCIE_PF_NUM 2 |
| #define PCIE_VF_NUM 64 |
| |
| #define PCIE_BAR0_SIZE (4 * 1024) /* 4K */ |
| #define PCIE_BAR1_SIZE (8 * 1024) /* 8K for MSIX */ |
| #define PCIE_BAR2_SIZE (4 * 1024) /* 4K */ |
| #define PCIE_BAR4_SIZE (1 * 1024 * 1024) /* 1M */ |
| |
| struct ls_pcie { |
| int idx; |
| void __iomem *dbi; |
| void __iomem *va_cfg0; |
| void __iomem *va_cfg1; |
| int next_lut_index; |
| struct pci_controller hose; |
| }; |
| |
| struct ls_pcie_info { |
| unsigned long regs; |
| int pci_num; |
| u64 phys_base; |
| u64 cfg0_phys; |
| u64 cfg0_size; |
| u64 cfg1_phys; |
| u64 cfg1_size; |
| u64 mem_bus; |
| u64 mem_phys; |
| u64 mem_size; |
| u64 io_bus; |
| u64 io_phys; |
| u64 io_size; |
| }; |
| |
| #define SET_LS_PCIE_INFO(x, num) \ |
| { \ |
| x.regs = CONFIG_SYS_PCIE##num##_ADDR; \ |
| x.phys_base = CONFIG_SYS_PCIE##num##_PHYS_ADDR; \ |
| x.cfg0_phys = CONFIG_SYS_PCIE_CFG0_PHYS_OFF + \ |
| CONFIG_SYS_PCIE##num##_PHYS_ADDR; \ |
| x.cfg0_size = CONFIG_SYS_PCIE_CFG0_SIZE; \ |
| x.cfg1_phys = CONFIG_SYS_PCIE_CFG1_PHYS_OFF + \ |
| CONFIG_SYS_PCIE##num##_PHYS_ADDR; \ |
| x.cfg1_size = CONFIG_SYS_PCIE_CFG1_SIZE; \ |
| x.mem_bus = CONFIG_SYS_PCIE_MEM_BUS; \ |
| x.mem_phys = CONFIG_SYS_PCIE_MEM_PHYS_OFF + \ |
| CONFIG_SYS_PCIE##num##_PHYS_ADDR; \ |
| x.mem_size = CONFIG_SYS_PCIE_MEM_SIZE; \ |
| x.io_bus = CONFIG_SYS_PCIE_IO_BUS; \ |
| x.io_phys = CONFIG_SYS_PCIE_IO_PHYS_OFF + \ |
| CONFIG_SYS_PCIE##num##_PHYS_ADDR; \ |
| x.io_size = CONFIG_SYS_PCIE_IO_SIZE; \ |
| x.pci_num = num; \ |
| } |
| |
| #ifdef CONFIG_LS102XA |
| #include <asm/arch/immap_ls102xa.h> |
| |
| /* PEX1/2 Misc Ports Status Register */ |
| #define LTSSM_STATE_SHIFT 20 |
| |
| static int ls_pcie_link_state(struct ls_pcie *pcie) |
| { |
| u32 state; |
| struct ccsr_scfg *scfg = (struct ccsr_scfg *)CONFIG_SYS_FSL_SCFG_ADDR; |
| |
| state = in_be32(&scfg->pexmscportsr[pcie->idx]); |
| state = (state >> LTSSM_STATE_SHIFT) & LTSSM_STATE_MASK; |
| if (state < LTSSM_PCIE_L0) { |
| debug("....PCIe link error. LTSSM=0x%02x.\n", state); |
| return 0; |
| } |
| |
| return 1; |
| } |
| #else |
| static int ls_pcie_link_state(struct ls_pcie *pcie) |
| { |
| u32 state; |
| |
| state = pex_lut_in32(pcie->dbi + PCIE_LUT_BASE + PCIE_LUT_DBG) & |
| LTSSM_STATE_MASK; |
| if (state < LTSSM_PCIE_L0) { |
| debug("....PCIe link error. LTSSM=0x%02x.\n", state); |
| return 0; |
| } |
| |
| return 1; |
| } |
| #endif |
| |
| static int ls_pcie_link_up(struct ls_pcie *pcie) |
| { |
| int state; |
| u32 cap; |
| |
| state = ls_pcie_link_state(pcie); |
| if (state) |
| return state; |
| |
| /* Try to download speed to gen1 */ |
| cap = readl(pcie->dbi + PCIE_LINK_CAP); |
| writel((cap & (~PCIE_LINK_SPEED_MASK)) | 1, pcie->dbi + PCIE_LINK_CAP); |
| /* |
| * Notice: the following delay has critical impact on link training |
| * if too short (<30ms) the link doesn't get up. |
| */ |
| mdelay(100); |
| state = ls_pcie_link_state(pcie); |
| if (state) |
| return state; |
| |
| writel(cap, pcie->dbi + PCIE_LINK_CAP); |
| |
| return 0; |
| } |
| |
| static void ls_pcie_cfg0_set_busdev(struct ls_pcie *pcie, u32 busdev) |
| { |
| writel(PCIE_ATU_REGION_OUTBOUND | PCIE_ATU_REGION_INDEX0, |
| pcie->dbi + PCIE_ATU_VIEWPORT); |
| writel(busdev, pcie->dbi + PCIE_ATU_LOWER_TARGET); |
| } |
| |
| static void ls_pcie_cfg1_set_busdev(struct ls_pcie *pcie, u32 busdev) |
| { |
| writel(PCIE_ATU_REGION_OUTBOUND | PCIE_ATU_REGION_INDEX1, |
| pcie->dbi + PCIE_ATU_VIEWPORT); |
| writel(busdev, pcie->dbi + PCIE_ATU_LOWER_TARGET); |
| } |
| |
| static void ls_pcie_iatu_outbound_set(struct ls_pcie *pcie, int idx, int type, |
| u64 phys, u64 bus_addr, pci_size_t size) |
| { |
| writel(PCIE_ATU_REGION_OUTBOUND | idx, pcie->dbi + PCIE_ATU_VIEWPORT); |
| writel((u32)phys, pcie->dbi + PCIE_ATU_LOWER_BASE); |
| writel(phys >> 32, pcie->dbi + PCIE_ATU_UPPER_BASE); |
| writel(phys + size - 1, pcie->dbi + PCIE_ATU_LIMIT); |
| writel((u32)bus_addr, pcie->dbi + PCIE_ATU_LOWER_TARGET); |
| writel(bus_addr >> 32, pcie->dbi + PCIE_ATU_UPPER_TARGET); |
| writel(type, pcie->dbi + PCIE_ATU_CR1); |
| writel(PCIE_ATU_ENABLE, pcie->dbi + PCIE_ATU_CR2); |
| } |
| |
| /* Use bar match mode and MEM type as default */ |
| static void ls_pcie_iatu_inbound_set(struct ls_pcie *pcie, int idx, |
| int bar, u64 phys) |
| { |
| writel(PCIE_ATU_REGION_INBOUND | idx, pcie->dbi + PCIE_ATU_VIEWPORT); |
| writel((u32)phys, pcie->dbi + PCIE_ATU_LOWER_TARGET); |
| writel(phys >> 32, pcie->dbi + PCIE_ATU_UPPER_TARGET); |
| writel(PCIE_ATU_TYPE_MEM, pcie->dbi + PCIE_ATU_CR1); |
| writel(PCIE_ATU_ENABLE | PCIE_ATU_BAR_MODE_ENABLE | |
| PCIE_ATU_BAR_NUM(bar), pcie->dbi + PCIE_ATU_CR2); |
| } |
| |
| static void ls_pcie_setup_atu(struct ls_pcie *pcie, struct ls_pcie_info *info) |
| { |
| #ifdef DEBUG |
| int i; |
| #endif |
| |
| /* ATU 0 : OUTBOUND : CFG0 */ |
| ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX0, |
| PCIE_ATU_TYPE_CFG0, |
| info->cfg0_phys, |
| 0, |
| info->cfg0_size); |
| /* ATU 1 : OUTBOUND : CFG1 */ |
| ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX1, |
| PCIE_ATU_TYPE_CFG1, |
| info->cfg1_phys, |
| 0, |
| info->cfg1_size); |
| /* ATU 2 : OUTBOUND : MEM */ |
| ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX2, |
| PCIE_ATU_TYPE_MEM, |
| info->mem_phys, |
| info->mem_bus, |
| info->mem_size); |
| /* ATU 3 : OUTBOUND : IO */ |
| ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX3, |
| PCIE_ATU_TYPE_IO, |
| info->io_phys, |
| info->io_bus, |
| info->io_size); |
| |
| #ifdef DEBUG |
| for (i = 0; i <= PCIE_ATU_REGION_INDEX3; i++) { |
| writel(PCIE_ATU_REGION_OUTBOUND | i, |
| pcie->dbi + PCIE_ATU_VIEWPORT); |
| debug("iATU%d:\n", i); |
| debug("\tLOWER PHYS 0x%08x\n", |
| readl(pcie->dbi + PCIE_ATU_LOWER_BASE)); |
| debug("\tUPPER PHYS 0x%08x\n", |
| readl(pcie->dbi + PCIE_ATU_UPPER_BASE)); |
| debug("\tLOWER BUS 0x%08x\n", |
| readl(pcie->dbi + PCIE_ATU_LOWER_TARGET)); |
| debug("\tUPPER BUS 0x%08x\n", |
| readl(pcie->dbi + PCIE_ATU_UPPER_TARGET)); |
| debug("\tLIMIT 0x%08x\n", |
| readl(pcie->dbi + PCIE_ATU_LIMIT)); |
| debug("\tCR1 0x%08x\n", |
| readl(pcie->dbi + PCIE_ATU_CR1)); |
| debug("\tCR2 0x%08x\n", |
| readl(pcie->dbi + PCIE_ATU_CR2)); |
| } |
| #endif |
| } |
| |
| int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev) |
| { |
| /* Do not skip controller */ |
| return 0; |
| } |
| |
| static int ls_pcie_addr_valid(struct pci_controller *hose, pci_dev_t d) |
| { |
| if (PCI_DEV(d) > 0) |
| return -EINVAL; |
| |
| /* Controller does not support multi-function in RC mode */ |
| if ((PCI_BUS(d) == hose->first_busno) && (PCI_FUNC(d) > 0)) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| static int ls_pcie_read_config(struct pci_controller *hose, pci_dev_t d, |
| int where, u32 *val) |
| { |
| struct ls_pcie *pcie = hose->priv_data; |
| u32 busdev, *addr; |
| |
| if (ls_pcie_addr_valid(hose, d)) { |
| *val = 0xffffffff; |
| return 0; |
| } |
| |
| if (PCI_BUS(d) == hose->first_busno) { |
| addr = pcie->dbi + (where & ~0x3); |
| } else { |
| busdev = PCIE_ATU_BUS(PCI_BUS(d)) | |
| PCIE_ATU_DEV(PCI_DEV(d)) | |
| PCIE_ATU_FUNC(PCI_FUNC(d)); |
| |
| if (PCI_BUS(d) == hose->first_busno + 1) { |
| ls_pcie_cfg0_set_busdev(pcie, busdev); |
| addr = pcie->va_cfg0 + (where & ~0x3); |
| } else { |
| ls_pcie_cfg1_set_busdev(pcie, busdev); |
| addr = pcie->va_cfg1 + (where & ~0x3); |
| } |
| } |
| |
| *val = readl(addr); |
| |
| return 0; |
| } |
| |
| static int ls_pcie_write_config(struct pci_controller *hose, pci_dev_t d, |
| int where, u32 val) |
| { |
| struct ls_pcie *pcie = hose->priv_data; |
| u32 busdev, *addr; |
| |
| if (ls_pcie_addr_valid(hose, d)) |
| return -EINVAL; |
| |
| if (PCI_BUS(d) == hose->first_busno) { |
| addr = pcie->dbi + (where & ~0x3); |
| } else { |
| busdev = PCIE_ATU_BUS(PCI_BUS(d)) | |
| PCIE_ATU_DEV(PCI_DEV(d)) | |
| PCIE_ATU_FUNC(PCI_FUNC(d)); |
| |
| if (PCI_BUS(d) == hose->first_busno + 1) { |
| ls_pcie_cfg0_set_busdev(pcie, busdev); |
| addr = pcie->va_cfg0 + (where & ~0x3); |
| } else { |
| ls_pcie_cfg1_set_busdev(pcie, busdev); |
| addr = pcie->va_cfg1 + (where & ~0x3); |
| } |
| } |
| |
| writel(val, addr); |
| |
| return 0; |
| } |
| |
| static void ls_pcie_setup_ctrl(struct ls_pcie *pcie, |
| struct ls_pcie_info *info) |
| { |
| struct pci_controller *hose = &pcie->hose; |
| pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0); |
| |
| ls_pcie_setup_atu(pcie, info); |
| |
| pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_0, 0); |
| |
| /* program correct class for RC */ |
| writel(1, pcie->dbi + PCIE_DBI_RO_WR_EN); |
| pci_hose_write_config_word(hose, dev, PCI_CLASS_DEVICE, |
| PCI_CLASS_BRIDGE_PCI); |
| #ifndef CONFIG_LS102XA |
| writel(0, pcie->dbi + PCIE_DBI_RO_WR_EN); |
| #endif |
| } |
| |
| static void ls_pcie_ep_setup_atu(struct ls_pcie *pcie, |
| struct ls_pcie_info *info) |
| { |
| u64 phys = CONFIG_SYS_PCI_EP_MEMORY_BASE; |
| |
| /* ATU 0 : INBOUND : map BAR0 */ |
| ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX0, 0, phys); |
| /* ATU 1 : INBOUND : map BAR1 */ |
| phys += PCIE_BAR1_SIZE; |
| ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX1, 1, phys); |
| /* ATU 2 : INBOUND : map BAR2 */ |
| phys += PCIE_BAR2_SIZE; |
| ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX2, 2, phys); |
| /* ATU 3 : INBOUND : map BAR4 */ |
| phys = CONFIG_SYS_PCI_EP_MEMORY_BASE + PCIE_BAR4_SIZE; |
| ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX3, 4, phys); |
| |
| /* ATU 0 : OUTBOUND : map 4G MEM */ |
| ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX0, |
| PCIE_ATU_TYPE_MEM, |
| info->phys_base, |
| 0, |
| 4 * 1024 * 1024 * 1024ULL); |
| } |
| |
| /* BAR0 and BAR1 are 32bit BAR2 and BAR4 are 64bit */ |
| static void ls_pcie_ep_setup_bar(void *bar_base, int bar, u32 size) |
| { |
| if (size < 4 * 1024) |
| return; |
| |
| switch (bar) { |
| case 0: |
| writel(size - 1, bar_base + PCI_BASE_ADDRESS_0); |
| break; |
| case 1: |
| writel(size - 1, bar_base + PCI_BASE_ADDRESS_1); |
| break; |
| case 2: |
| writel(size - 1, bar_base + PCI_BASE_ADDRESS_2); |
| writel(0, bar_base + PCI_BASE_ADDRESS_3); |
| break; |
| case 4: |
| writel(size - 1, bar_base + PCI_BASE_ADDRESS_4); |
| writel(0, bar_base + PCI_BASE_ADDRESS_5); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| static void ls_pcie_ep_setup_bars(void *bar_base) |
| { |
| /* BAR0 - 32bit - 4K configuration */ |
| ls_pcie_ep_setup_bar(bar_base, 0, PCIE_BAR0_SIZE); |
| /* BAR1 - 32bit - 8K MSIX*/ |
| ls_pcie_ep_setup_bar(bar_base, 1, PCIE_BAR1_SIZE); |
| /* BAR2 - 64bit - 4K MEM desciptor */ |
| ls_pcie_ep_setup_bar(bar_base, 2, PCIE_BAR2_SIZE); |
| /* BAR4 - 64bit - 1M MEM*/ |
| ls_pcie_ep_setup_bar(bar_base, 4, PCIE_BAR4_SIZE); |
| } |
| |
| static void ls_pcie_setup_ep(struct ls_pcie *pcie, struct ls_pcie_info *info) |
| { |
| struct pci_controller *hose = &pcie->hose; |
| pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0); |
| int sriov; |
| |
| sriov = pci_hose_find_ext_capability(hose, dev, PCI_EXT_CAP_ID_SRIOV); |
| if (sriov) { |
| int pf, vf; |
| |
| for (pf = 0; pf < PCIE_PF_NUM; pf++) { |
| for (vf = 0; vf <= PCIE_VF_NUM; vf++) { |
| #ifndef CONFIG_LS102XA |
| writel(PCIE_LCTRL0_VAL(pf, vf), |
| pcie->dbi + PCIE_LUT_BASE + |
| PCIE_LUT_LCTRL0); |
| #endif |
| ls_pcie_ep_setup_bars(pcie->dbi); |
| ls_pcie_ep_setup_atu(pcie, info); |
| } |
| } |
| |
| /* Disable CFG2 */ |
| #ifndef CONFIG_LS102XA |
| writel(0, pcie->dbi + PCIE_LUT_BASE + PCIE_LUT_LCTRL0); |
| #endif |
| } else { |
| ls_pcie_ep_setup_bars(pcie->dbi + PCIE_NO_SRIOV_BAR_BASE); |
| ls_pcie_ep_setup_atu(pcie, info); |
| } |
| } |
| |
| #ifdef CONFIG_FSL_LSCH3 |
| /* |
| * Return next available LUT index. |
| */ |
| static int ls_pcie_next_lut_index(struct ls_pcie *pcie) |
| { |
| if (pcie->next_lut_index < PCIE_LUT_ENTRY_COUNT) |
| return pcie->next_lut_index++; |
| else |
| return -1; /* LUT is full */ |
| } |
| |
| /* |
| * Program a single LUT entry |
| */ |
| static void ls_pcie_lut_set_mapping(struct ls_pcie *pcie, int index, u32 devid, |
| u32 streamid) |
| { |
| void __iomem *lut; |
| |
| lut = pcie->dbi + PCIE_LUT_BASE; |
| |
| /* leave mask as all zeroes, want to match all bits */ |
| writel((devid << 16), lut + PCIE_LUT_UDR(index)); |
| writel(streamid | PCIE_LUT_ENABLE, lut + PCIE_LUT_LDR(index)); |
| } |
| |
| /* returns the next available streamid */ |
| static u32 ls_pcie_next_streamid(void) |
| { |
| static int next_stream_id = FSL_PEX_STREAM_ID_START; |
| |
| if (next_stream_id > FSL_PEX_STREAM_ID_END) |
| return 0xffffffff; |
| |
| return next_stream_id++; |
| } |
| |
| /* |
| * An msi-map is a property to be added to the pci controller |
| * node. It is a table, where each entry consists of 4 fields |
| * e.g.: |
| * |
| * msi-map = <[devid] [phandle-to-msi-ctrl] [stream-id] [count] |
| * [devid] [phandle-to-msi-ctrl] [stream-id] [count]>; |
| */ |
| static void fdt_pcie_set_msi_map_entry(void *blob, struct ls_pcie *pcie, |
| u32 devid, u32 streamid) |
| { |
| char pcie_path[19]; |
| u32 *prop; |
| u32 phandle; |
| int nodeoffset; |
| |
| /* find pci controller node */ |
| snprintf(pcie_path, sizeof(pcie_path), "/soc/pcie@%llx", |
| (u64)pcie->dbi); |
| nodeoffset = fdt_path_offset(blob, pcie_path); |
| if (nodeoffset < 0) { |
| printf("\n%s: ERROR: unable to update PCIe node: %s\n", |
| __func__, pcie_path); |
| return; |
| } |
| |
| /* get phandle to MSI controller */ |
| prop = (u32 *)fdt_getprop(blob, nodeoffset, "msi-parent", 0); |
| if (prop == NULL) { |
| printf("\n%s: ERROR: missing msi-parent: %s\n", __func__, |
| pcie_path); |
| return; |
| } |
| phandle = be32_to_cpu(*prop); |
| |
| /* set one msi-map row */ |
| fdt_appendprop_u32(blob, nodeoffset, "msi-map", devid); |
| fdt_appendprop_u32(blob, nodeoffset, "msi-map", phandle); |
| fdt_appendprop_u32(blob, nodeoffset, "msi-map", streamid); |
| fdt_appendprop_u32(blob, nodeoffset, "msi-map", 1); |
| } |
| |
| static void fdt_fixup_pcie(void *blob) |
| { |
| unsigned int found_multi = 0; |
| unsigned char header_type; |
| int index; |
| u32 streamid; |
| pci_dev_t dev, bdf; |
| int bus; |
| unsigned short id; |
| struct pci_controller *hose; |
| struct ls_pcie *pcie; |
| int i; |
| |
| for (i = 0, hose = pci_get_hose_head(); hose; hose = hose->next, i++) { |
| pcie = hose->priv_data; |
| for (bus = hose->first_busno; bus <= hose->last_busno; bus++) { |
| |
| for (dev = PCI_BDF(bus, 0, 0); |
| dev < PCI_BDF(bus, PCI_MAX_PCI_DEVICES - 1, |
| PCI_MAX_PCI_FUNCTIONS - 1); |
| dev += PCI_BDF(0, 0, 1)) { |
| |
| if (PCI_FUNC(dev) && !found_multi) |
| continue; |
| |
| pci_read_config_word(dev, PCI_VENDOR_ID, &id); |
| |
| pci_read_config_byte(dev, PCI_HEADER_TYPE, |
| &header_type); |
| |
| if ((id == 0xFFFF) || (id == 0x0000)) |
| continue; |
| |
| if (!PCI_FUNC(dev)) |
| found_multi = header_type & 0x80; |
| |
| streamid = ls_pcie_next_streamid(); |
| if (streamid == 0xffffffff) { |
| printf("ERROR: no stream ids free\n"); |
| continue; |
| } |
| |
| index = ls_pcie_next_lut_index(pcie); |
| if (index < 0) { |
| printf("ERROR: no LUT indexes free\n"); |
| continue; |
| } |
| |
| /* the DT fixup must be relative to the hose first_busno */ |
| bdf = dev - PCI_BDF(hose->first_busno, 0, 0); |
| |
| /* map PCI b.d.f to streamID in LUT */ |
| ls_pcie_lut_set_mapping(pcie, index, bdf >> 8, |
| streamid); |
| |
| /* update msi-map in device tree */ |
| fdt_pcie_set_msi_map_entry(blob, pcie, bdf >> 8, |
| streamid); |
| } |
| } |
| } |
| } |
| #endif |
| |
| int ls_pcie_init_ctrl(int busno, enum srds_prtcl dev, struct ls_pcie_info *info) |
| { |
| struct ls_pcie *pcie; |
| struct pci_controller *hose; |
| int num = dev - PCIE1; |
| pci_dev_t pdev = PCI_BDF(busno, 0, 0); |
| int i, linkup, ep_mode; |
| u8 header_type; |
| u16 temp16; |
| |
| if (!is_serdes_configured(dev)) { |
| printf("PCIe%d: disabled\n", num + 1); |
| return busno; |
| } |
| |
| pcie = malloc(sizeof(*pcie)); |
| if (!pcie) |
| return busno; |
| memset(pcie, 0, sizeof(*pcie)); |
| |
| hose = &pcie->hose; |
| hose->priv_data = pcie; |
| hose->first_busno = busno; |
| pcie->idx = num; |
| pcie->dbi = map_physmem(info->regs, PCIE_DBI_SIZE, MAP_NOCACHE); |
| pcie->va_cfg0 = map_physmem(info->cfg0_phys, |
| info->cfg0_size, |
| MAP_NOCACHE); |
| pcie->va_cfg1 = map_physmem(info->cfg1_phys, |
| info->cfg1_size, |
| MAP_NOCACHE); |
| pcie->next_lut_index = 0; |
| |
| /* outbound memory */ |
| pci_set_region(&hose->regions[0], |
| (pci_size_t)info->mem_bus, |
| (phys_size_t)info->mem_phys, |
| (pci_size_t)info->mem_size, |
| PCI_REGION_MEM); |
| |
| /* outbound io */ |
| pci_set_region(&hose->regions[1], |
| (pci_size_t)info->io_bus, |
| (phys_size_t)info->io_phys, |
| (pci_size_t)info->io_size, |
| PCI_REGION_IO); |
| |
| /* System memory space */ |
| pci_set_region(&hose->regions[2], |
| CONFIG_SYS_PCI_MEMORY_BUS, |
| CONFIG_SYS_PCI_MEMORY_PHYS, |
| CONFIG_SYS_PCI_MEMORY_SIZE, |
| PCI_REGION_SYS_MEMORY); |
| |
| hose->region_count = 3; |
| |
| for (i = 0; i < hose->region_count; i++) |
| debug("PCI reg:%d %016llx:%016llx %016llx %08lx\n", |
| i, |
| (u64)hose->regions[i].phys_start, |
| (u64)hose->regions[i].bus_start, |
| (u64)hose->regions[i].size, |
| hose->regions[i].flags); |
| |
| pci_set_ops(hose, |
| pci_hose_read_config_byte_via_dword, |
| pci_hose_read_config_word_via_dword, |
| ls_pcie_read_config, |
| pci_hose_write_config_byte_via_dword, |
| pci_hose_write_config_word_via_dword, |
| ls_pcie_write_config); |
| |
| pci_hose_read_config_byte(hose, pdev, PCI_HEADER_TYPE, &header_type); |
| ep_mode = (header_type & 0x7f) == PCI_HEADER_TYPE_NORMAL; |
| printf("PCIe%u: %s ", info->pci_num, |
| ep_mode ? "Endpoint" : "Root Complex"); |
| |
| if (ep_mode) |
| ls_pcie_setup_ep(pcie, info); |
| else |
| ls_pcie_setup_ctrl(pcie, info); |
| |
| linkup = ls_pcie_link_up(pcie); |
| |
| if (!linkup) { |
| /* Let the user know there's no PCIe link */ |
| printf("no link, regs @ 0x%lx\n", info->regs); |
| hose->last_busno = hose->first_busno; |
| return busno; |
| } |
| |
| /* Print the negotiated PCIe link width */ |
| pci_hose_read_config_word(hose, pdev, PCIE_LINK_STA, &temp16); |
| printf("x%d gen%d, regs @ 0x%lx\n", (temp16 & 0x3f0) >> 4, |
| (temp16 & 0xf), info->regs); |
| |
| if (ep_mode) |
| return busno; |
| |
| pci_register_hose(hose); |
| |
| hose->last_busno = pci_hose_scan(hose); |
| |
| printf("PCIe%x: Bus %02x - %02x\n", |
| info->pci_num, hose->first_busno, hose->last_busno); |
| |
| return hose->last_busno + 1; |
| } |
| |
| int ls_pcie_init_board(int busno) |
| { |
| struct ls_pcie_info info; |
| |
| #ifdef CONFIG_PCIE1 |
| SET_LS_PCIE_INFO(info, 1); |
| busno = ls_pcie_init_ctrl(busno, PCIE1, &info); |
| #endif |
| |
| #ifdef CONFIG_PCIE2 |
| SET_LS_PCIE_INFO(info, 2); |
| busno = ls_pcie_init_ctrl(busno, PCIE2, &info); |
| #endif |
| |
| #ifdef CONFIG_PCIE3 |
| SET_LS_PCIE_INFO(info, 3); |
| busno = ls_pcie_init_ctrl(busno, PCIE3, &info); |
| #endif |
| |
| #ifdef CONFIG_PCIE4 |
| SET_LS_PCIE_INFO(info, 4); |
| busno = ls_pcie_init_ctrl(busno, PCIE4, &info); |
| #endif |
| |
| return busno; |
| } |
| |
| void pci_init_board(void) |
| { |
| ls_pcie_init_board(0); |
| } |
| |
| #ifdef CONFIG_OF_BOARD_SETUP |
| #include <libfdt.h> |
| #include <fdt_support.h> |
| |
| static void ft_pcie_ls_setup(void *blob, const char *pci_compat, |
| unsigned long ctrl_addr, enum srds_prtcl dev) |
| { |
| int off; |
| |
| off = fdt_node_offset_by_compat_reg(blob, pci_compat, |
| (phys_addr_t)ctrl_addr); |
| if (off < 0) |
| return; |
| |
| if (!is_serdes_configured(dev)) |
| fdt_set_node_status(blob, off, FDT_STATUS_DISABLED, 0); |
| } |
| |
| void ft_pci_setup(void *blob, bd_t *bd) |
| { |
| #ifdef CONFIG_PCIE1 |
| ft_pcie_ls_setup(blob, FSL_PCIE_COMPAT, CONFIG_SYS_PCIE1_ADDR, PCIE1); |
| #endif |
| |
| #ifdef CONFIG_PCIE2 |
| ft_pcie_ls_setup(blob, FSL_PCIE_COMPAT, CONFIG_SYS_PCIE2_ADDR, PCIE2); |
| #endif |
| |
| #ifdef CONFIG_PCIE3 |
| ft_pcie_ls_setup(blob, FSL_PCIE_COMPAT, CONFIG_SYS_PCIE3_ADDR, PCIE3); |
| #endif |
| |
| #ifdef CONFIG_PCIE4 |
| ft_pcie_ls_setup(blob, FSL_PCIE_COMPAT, CONFIG_SYS_PCIE4_ADDR, PCIE4); |
| #endif |
| |
| #ifdef CONFIG_FSL_LSCH3 |
| fdt_fixup_pcie(blob); |
| #endif |
| } |
| |
| #else |
| void ft_pci_setup(void *blob, bd_t *bd) |
| { |
| } |
| #endif |