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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 | // SPDX-License-Identifier: GPL-2.0+ /* * Copyright 2019-2021 NXP * * PCIe DT fixup for NXP Layerscape SoCs * Author: Wasim Khan <wasim.khan@nxp.com> * */ #include <init.h> #include <asm/arch/clock.h> #include <asm/arch/soc.h> #include <linux/errno.h> #include <linux/libfdt.h> #include <fdt_support.h> #include "pcie_layerscape_fixup_common.h" extern int next_stream_id; void ft_pci_setup(void *blob, struct bd_info *bd) { #if defined(CONFIG_PCIE_LAYERSCAPE_GEN4) uint svr; svr = SVR_SOC_VER(get_svr()); if (svr == SVR_LX2160A && IS_SVR_REV(get_svr(), 1, 0)) ft_pci_setup_ls_gen4(blob, bd); else #endif /* CONFIG_PCIE_LAYERSCAPE_GEN4 */ ft_pci_setup_ls(blob, bd); } #if defined(CONFIG_FSL_LAYERSCAPE) static int lx2_board_fix_fdt(void *fdt) { char *reg_name, *old_str, *new_str; const char *reg_names; int names_len, old_str_len, new_str_len, remaining_str_len; struct str_map { char *old_str; char *new_str; } reg_names_map[] = { { "csr_axi_slave", "regs" }, { "config_axi_slave", "config" } }; int off = -1, i; const fdt32_t *prop; u32 ob_wins, ib_wins; fdt_for_each_node_by_compatible(off, fdt, -1, "fsl,lx2160a-pcie") { fdt_setprop(fdt, off, "compatible", "fsl,ls2088a-pcie", strlen("fsl,ls2088a-pcie") + 1); reg_names = fdt_getprop(fdt, off, "reg-names", &names_len); if (!reg_names) continue; reg_name = (char *)reg_names; remaining_str_len = names_len - (reg_name - reg_names); i = 0; while ((i < ARRAY_SIZE(reg_names_map)) && remaining_str_len) { old_str = reg_names_map[i].old_str; new_str = reg_names_map[i].new_str; old_str_len = strlen(old_str); new_str_len = strlen(new_str); if (memcmp(reg_name, old_str, old_str_len) == 0) { /* first only leave required bytes for new_str * and copy rest of the string after it */ memcpy(reg_name + new_str_len, reg_name + old_str_len, remaining_str_len - old_str_len); /* Now copy new_str */ memcpy(reg_name, new_str, new_str_len); names_len -= old_str_len; names_len += new_str_len; i++; } reg_name = memchr(reg_name, '\0', remaining_str_len); if (!reg_name) break; reg_name += 1; remaining_str_len = names_len - (reg_name - reg_names); } fdt_setprop(fdt, off, "reg-names", reg_names, names_len); fdt_delprop(fdt, off, "apio-wins"); fdt_delprop(fdt, off, "ppio-wins"); } /* Fixup PCIe EP nodes */ fdt_for_each_node_by_compatible(off, fdt, -1, "fsl,lx2160a-pcie-ep") { fdt_setprop_string(fdt, off, "compatible", "fsl,lx2160ar2-pcie-ep"); prop = fdt_getprop(fdt, off, "apio-wins", NULL); if (!prop) { printf("%s: Failed to fixup PCIe EP node @0x%x\n", __func__, off); off = fdt_node_offset_by_compatible(fdt, off, "fsl,lx2160a-pcie-ep"); continue; } ob_wins = fdt32_to_cpu(*prop); ib_wins = (ob_wins == 256) ? 24 : 8; fdt_setprop_u32(fdt, off, "num-ib-windows", ib_wins); fdt_setprop_u32(fdt, off, "num-ob-windows", ob_wins); fdt_delprop(fdt, off, "apio-wins"); } return 0; } int pcie_board_fix_fdt(void *fdt) { uint svr; svr = SVR_SOC_VER(get_svr()); if ((svr == SVR_LX2160A || svr == SVR_LX2162A || svr == SVR_LX2120A || svr == SVR_LX2080A || svr == SVR_LX2122A || svr == SVR_LX2082A) && IS_SVR_REV(get_svr(), 2, 0)) return lx2_board_fix_fdt(fdt); return 0; } #if defined(CONFIG_ARCH_LX2160A) || defined(CONFIG_ARCH_LX2162A) /* returns the next available streamid for pcie, -errno if failed */ int pcie_next_streamid(int currentid, int idx) { if (currentid > FSL_PEX_STREAM_ID_END) return -EINVAL; return currentid | ((idx + 1) << 11); } #else /* returns the next available streamid for pcie, -errno if failed */ int pcie_next_streamid(int currentid, int idx) { if (next_stream_id > FSL_PEX_STREAM_ID_END) return -EINVAL; return next_stream_id++; } #endif #endif /* CONFIG_FSL_LAYERSCAPE */ |