1 // SPDX-License-Identifier: GPL-2.0-only 2 /* Copyright (C) 2021 Felix Fietkau <nbd@nbd.name> */ 3 4 #include <linux/seq_file.h> 5 #include "mtk_wed.h" 6 #include "mtk_wed_regs.h" 7 8 struct reg_dump { 9 const char *name; 10 u16 offset; 11 u8 type; 12 u8 base; 13 }; 14 15 enum { 16 DUMP_TYPE_STRING, 17 DUMP_TYPE_WED, 18 DUMP_TYPE_WDMA, 19 DUMP_TYPE_WPDMA_TX, 20 DUMP_TYPE_WPDMA_TXFREE, 21 }; 22 23 #define DUMP_STR(_str) { _str, 0, DUMP_TYPE_STRING } 24 #define DUMP_REG(_reg, ...) { #_reg, MTK_##_reg, __VA_ARGS__ } 25 #define DUMP_RING(_prefix, _base, ...) \ 26 { _prefix " BASE", _base, __VA_ARGS__ }, \ 27 { _prefix " CNT", _base + 0x4, __VA_ARGS__ }, \ 28 { _prefix " CIDX", _base + 0x8, __VA_ARGS__ }, \ 29 { _prefix " DIDX", _base + 0xc, __VA_ARGS__ } 30 31 #define DUMP_WED(_reg) DUMP_REG(_reg, DUMP_TYPE_WED) 32 #define DUMP_WED_RING(_base) DUMP_RING(#_base, MTK_##_base, DUMP_TYPE_WED) 33 34 #define DUMP_WDMA(_reg) DUMP_REG(_reg, DUMP_TYPE_WDMA) 35 #define DUMP_WDMA_RING(_base) DUMP_RING(#_base, MTK_##_base, DUMP_TYPE_WDMA) 36 37 #define DUMP_WPDMA_TX_RING(_n) DUMP_RING("WPDMA_TX" #_n, 0, DUMP_TYPE_WPDMA_TX, _n) 38 #define DUMP_WPDMA_TXFREE_RING DUMP_RING("WPDMA_RX1", 0, DUMP_TYPE_WPDMA_TXFREE) 39 40 static void 41 print_reg_val(struct seq_file *s, const char *name, u32 val) 42 { 43 seq_printf(s, "%-32s %08x\n", name, val); 44 } 45 46 static void 47 dump_wed_regs(struct seq_file *s, struct mtk_wed_device *dev, 48 const struct reg_dump *regs, int n_regs) 49 { 50 const struct reg_dump *cur; 51 u32 val; 52 53 for (cur = regs; cur < ®s[n_regs]; cur++) { 54 switch (cur->type) { 55 case DUMP_TYPE_STRING: 56 seq_printf(s, "%s======== %s:\n", 57 cur > regs ? "\n" : "", 58 cur->name); 59 continue; 60 case DUMP_TYPE_WED: 61 val = wed_r32(dev, cur->offset); 62 break; 63 case DUMP_TYPE_WDMA: 64 val = wdma_r32(dev, cur->offset); 65 break; 66 case DUMP_TYPE_WPDMA_TX: 67 val = wpdma_tx_r32(dev, cur->base, cur->offset); 68 break; 69 case DUMP_TYPE_WPDMA_TXFREE: 70 val = wpdma_txfree_r32(dev, cur->offset); 71 break; 72 } 73 print_reg_val(s, cur->name, val); 74 } 75 } 76 77 78 static int 79 wed_txinfo_show(struct seq_file *s, void *data) 80 { 81 static const struct reg_dump regs[] = { 82 DUMP_STR("WED TX"), 83 DUMP_WED(WED_TX_MIB(0)), 84 DUMP_WED_RING(WED_RING_TX(0)), 85 86 DUMP_WED(WED_TX_MIB(1)), 87 DUMP_WED_RING(WED_RING_TX(1)), 88 89 DUMP_STR("WPDMA TX"), 90 DUMP_WED(WED_WPDMA_TX_MIB(0)), 91 DUMP_WED_RING(WED_WPDMA_RING_TX(0)), 92 DUMP_WED(WED_WPDMA_TX_COHERENT_MIB(0)), 93 94 DUMP_WED(WED_WPDMA_TX_MIB(1)), 95 DUMP_WED_RING(WED_WPDMA_RING_TX(1)), 96 DUMP_WED(WED_WPDMA_TX_COHERENT_MIB(1)), 97 98 DUMP_STR("WPDMA TX"), 99 DUMP_WPDMA_TX_RING(0), 100 DUMP_WPDMA_TX_RING(1), 101 102 DUMP_STR("WED WDMA RX"), 103 DUMP_WED(WED_WDMA_RX_MIB(0)), 104 DUMP_WED_RING(WED_WDMA_RING_RX(0)), 105 DUMP_WED(WED_WDMA_RX_THRES(0)), 106 DUMP_WED(WED_WDMA_RX_RECYCLE_MIB(0)), 107 DUMP_WED(WED_WDMA_RX_PROCESSED_MIB(0)), 108 109 DUMP_WED(WED_WDMA_RX_MIB(1)), 110 DUMP_WED_RING(WED_WDMA_RING_RX(1)), 111 DUMP_WED(WED_WDMA_RX_THRES(1)), 112 DUMP_WED(WED_WDMA_RX_RECYCLE_MIB(1)), 113 DUMP_WED(WED_WDMA_RX_PROCESSED_MIB(1)), 114 115 DUMP_STR("WDMA RX"), 116 DUMP_WDMA(WDMA_GLO_CFG), 117 DUMP_WDMA_RING(WDMA_RING_RX(0)), 118 DUMP_WDMA_RING(WDMA_RING_RX(1)), 119 120 DUMP_STR("TX FREE"), 121 DUMP_WED(WED_RX_MIB(0)), 122 }; 123 struct mtk_wed_hw *hw = s->private; 124 struct mtk_wed_device *dev = hw->wed_dev; 125 126 if (!dev) 127 return 0; 128 129 dump_wed_regs(s, dev, regs, ARRAY_SIZE(regs)); 130 131 return 0; 132 } 133 DEFINE_SHOW_ATTRIBUTE(wed_txinfo); 134 135 136 static int 137 mtk_wed_reg_set(void *data, u64 val) 138 { 139 struct mtk_wed_hw *hw = data; 140 141 regmap_write(hw->regs, hw->debugfs_reg, val); 142 143 return 0; 144 } 145 146 static int 147 mtk_wed_reg_get(void *data, u64 *val) 148 { 149 struct mtk_wed_hw *hw = data; 150 unsigned int regval; 151 int ret; 152 153 ret = regmap_read(hw->regs, hw->debugfs_reg, ®val); 154 if (ret) 155 return ret; 156 157 *val = regval; 158 159 return 0; 160 } 161 162 DEFINE_DEBUGFS_ATTRIBUTE(fops_regval, mtk_wed_reg_get, mtk_wed_reg_set, 163 "0x%08llx\n"); 164 165 void mtk_wed_hw_add_debugfs(struct mtk_wed_hw *hw) 166 { 167 struct dentry *dir; 168 169 snprintf(hw->dirname, sizeof(hw->dirname), "wed%d", hw->index); 170 dir = debugfs_create_dir(hw->dirname, NULL); 171 if (!dir) 172 return; 173 174 hw->debugfs_dir = dir; 175 debugfs_create_u32("regidx", 0600, dir, &hw->debugfs_reg); 176 debugfs_create_file_unsafe("regval", 0600, dir, hw, &fops_regval); 177 debugfs_create_file_unsafe("txinfo", 0400, dir, hw, &wed_txinfo_fops); 178 } 179