diff options
Diffstat (limited to 'drivers/net/ethernet/mediatek/mtk_wed_debugfs.c')
| -rw-r--r-- | drivers/net/ethernet/mediatek/mtk_wed_debugfs.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mediatek/mtk_wed_debugfs.c b/drivers/net/ethernet/mediatek/mtk_wed_debugfs.c new file mode 100644 index 000000000000..f420f187e837 --- /dev/null +++ b/drivers/net/ethernet/mediatek/mtk_wed_debugfs.c @@ -0,0 +1,178 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* Copyright (C) 2021 Felix Fietkau <nbd@nbd.name> */ + +#include <linux/seq_file.h> +#include "mtk_wed.h" +#include "mtk_wed_regs.h" + +struct reg_dump { + const char *name; + u16 offset; + u8 type; + u8 base; +}; + +enum { + DUMP_TYPE_STRING, + DUMP_TYPE_WED, + DUMP_TYPE_WDMA, + DUMP_TYPE_WPDMA_TX, + DUMP_TYPE_WPDMA_TXFREE, +}; + +#define DUMP_STR(_str) { _str, 0, DUMP_TYPE_STRING } +#define DUMP_REG(_reg, ...) { #_reg, MTK_##_reg, __VA_ARGS__ } +#define DUMP_RING(_prefix, _base, ...) \ + { _prefix " BASE", _base, __VA_ARGS__ }, \ + { _prefix " CNT", _base + 0x4, __VA_ARGS__ }, \ + { _prefix " CIDX", _base + 0x8, __VA_ARGS__ }, \ + { _prefix " DIDX", _base + 0xc, __VA_ARGS__ } + +#define DUMP_WED(_reg) DUMP_REG(_reg, DUMP_TYPE_WED) +#define DUMP_WED_RING(_base) DUMP_RING(#_base, MTK_##_base, DUMP_TYPE_WED) + +#define DUMP_WDMA(_reg) DUMP_REG(_reg, DUMP_TYPE_WDMA) +#define DUMP_WDMA_RING(_base) DUMP_RING(#_base, MTK_##_base, DUMP_TYPE_WDMA) + +#define DUMP_WPDMA_TX_RING(_n) DUMP_RING("WPDMA_TX" #_n, 0, DUMP_TYPE_WPDMA_TX, _n) +#define DUMP_WPDMA_TXFREE_RING DUMP_RING("WPDMA_RX1", 0, DUMP_TYPE_WPDMA_TXFREE) + +static void +print_reg_val(struct seq_file *s, const char *name, u32 val) +{ + seq_printf(s, "%-32s %08x\n", name, val); +} + +static void +dump_wed_regs(struct seq_file *s, struct mtk_wed_device *dev, + const struct reg_dump *regs, int n_regs) +{ + const struct reg_dump *cur; + u32 val; + + for (cur = regs; cur < ®s[n_regs]; cur++) { + switch (cur->type) { + case DUMP_TYPE_STRING: + seq_printf(s, "%s======== %s:\n", + cur > regs ? "\n" : "", + cur->name); + continue; + case DUMP_TYPE_WED: + val = wed_r32(dev, cur->offset); + break; + case DUMP_TYPE_WDMA: + val = wdma_r32(dev, cur->offset); + break; + case DUMP_TYPE_WPDMA_TX: + val = wpdma_tx_r32(dev, cur->base, cur->offset); + break; + case DUMP_TYPE_WPDMA_TXFREE: + val = wpdma_txfree_r32(dev, cur->offset); + break; + } + print_reg_val(s, cur->name, val); + } +} + + +static int +wed_txinfo_show(struct seq_file *s, void *data) +{ + static const struct reg_dump regs[] = { + DUMP_STR("WED TX"), + DUMP_WED(WED_TX_MIB(0)), + DUMP_WED_RING(WED_RING_TX(0)), + + DUMP_WED(WED_TX_MIB(1)), + DUMP_WED_RING(WED_RING_TX(1)), + + DUMP_STR("WPDMA TX"), + DUMP_WED(WED_WPDMA_TX_MIB(0)), + DUMP_WED_RING(WED_WPDMA_RING_TX(0)), + DUMP_WED(WED_WPDMA_TX_COHERENT_MIB(0)), + + DUMP_WED(WED_WPDMA_TX_MIB(1)), + DUMP_WED_RING(WED_WPDMA_RING_TX(1)), + DUMP_WED(WED_WPDMA_TX_COHERENT_MIB(1)), + + DUMP_STR("WPDMA TX"), + DUMP_WPDMA_TX_RING(0), + DUMP_WPDMA_TX_RING(1), + + DUMP_STR("WED WDMA RX"), + DUMP_WED(WED_WDMA_RX_MIB(0)), + DUMP_WED_RING(WED_WDMA_RING_RX(0)), + DUMP_WED(WED_WDMA_RX_THRES(0)), + DUMP_WED(WED_WDMA_RX_RECYCLE_MIB(0)), + DUMP_WED(WED_WDMA_RX_PROCESSED_MIB(0)), + + DUMP_WED(WED_WDMA_RX_MIB(1)), + DUMP_WED_RING(WED_WDMA_RING_RX(1)), + DUMP_WED(WED_WDMA_RX_THRES(1)), + DUMP_WED(WED_WDMA_RX_RECYCLE_MIB(1)), + DUMP_WED(WED_WDMA_RX_PROCESSED_MIB(1)), + + DUMP_STR("WDMA RX"), + DUMP_WDMA(WDMA_GLO_CFG), + DUMP_WDMA_RING(WDMA_RING_RX(0)), + DUMP_WDMA_RING(WDMA_RING_RX(1)), + + DUMP_STR("TX FREE"), + DUMP_WED(WED_RX_MIB(0)), + }; + struct mtk_wed_hw *hw = s->private; + struct mtk_wed_device *dev = hw->wed_dev; + + if (!dev) + return 0; + + dump_wed_regs(s, dev, regs, ARRAY_SIZE(regs)); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(wed_txinfo); + + +static int +mtk_wed_reg_set(void *data, u64 val) +{ + struct mtk_wed_hw *hw = data; + + regmap_write(hw->regs, hw->debugfs_reg, val); + + return 0; +} + +static int +mtk_wed_reg_get(void *data, u64 *val) +{ + struct mtk_wed_hw *hw = data; + unsigned int regval; + int ret; + + ret = regmap_read(hw->regs, hw->debugfs_reg, ®val); + if (ret) + return ret; + + *val = regval; + + return 0; +} + +DEFINE_DEBUGFS_ATTRIBUTE(fops_regval, mtk_wed_reg_get, mtk_wed_reg_set, + "0x%08llx\n"); + +void mtk_wed_hw_add_debugfs(struct mtk_wed_hw *hw) +{ + struct dentry *dir; + + snprintf(hw->dirname, sizeof(hw->dirname), "wed%d", hw->index); + dir = debugfs_create_dir(hw->dirname, NULL); + if (!dir) + return; + + hw->debugfs_dir = dir; + debugfs_create_u32("regidx", 0600, dir, &hw->debugfs_reg); + debugfs_create_file_unsafe("regval", 0600, dir, hw, &fops_regval); + debugfs_create_file_unsafe("txinfo", 0400, dir, hw, &wed_txinfo_fops); +} |