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// 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)),
};
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);
}
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