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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
| commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
| tree | a94efe259b9009378be6d90eb30d2b019d95c194 /drivers/misc/cb710/debug.c | |
| parent | Initial commit. (diff) | |
| download | linux-upstream/5.10.209.tar.xz linux-upstream/5.10.209.zip | |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/misc/cb710/debug.c')
| -rw-r--r-- | drivers/misc/cb710/debug.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/drivers/misc/cb710/debug.c b/drivers/misc/cb710/debug.c new file mode 100644 index 000000000..20d672edf --- /dev/null +++ b/drivers/misc/cb710/debug.c @@ -0,0 +1,115 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * cb710/debug.c + * + * Copyright by Michał Mirosław, 2008-2009 + */ +#include <linux/cb710.h> +#include <linux/kernel.h> +#include <linux/module.h> + +#define CB710_REG_COUNT 0x80 + +static const u16 allow[CB710_REG_COUNT/16] = { + 0xFFF0, 0xFFFF, 0xFFFF, 0xFFFF, + 0xFFF0, 0xFFFF, 0xFFFF, 0xFFFF, +}; +static const char *const prefix[ARRAY_SIZE(allow)] = { + "MMC", "MMC", "MMC", "MMC", + "MS?", "MS?", "SM?", "SM?" +}; + +static inline int allow_reg_read(unsigned block, unsigned offset, unsigned bits) +{ + unsigned mask = (1 << bits/8) - 1; + offset *= bits/8; + return ((allow[block] >> offset) & mask) == mask; +} + +#define CB710_READ_REGS_TEMPLATE(t) \ +static void cb710_read_regs_##t(void __iomem *iobase, \ + u##t *reg, unsigned select) \ +{ \ + unsigned i, j; \ + \ + for (i = 0; i < ARRAY_SIZE(allow); ++i, reg += 16/(t/8)) { \ + if (!(select & (1 << i))) \ + continue; \ + \ + for (j = 0; j < 0x10/(t/8); ++j) { \ + if (!allow_reg_read(i, j, t)) \ + continue; \ + reg[j] = ioread##t(iobase \ + + (i << 4) + (j * (t/8))); \ + } \ + } \ +} + +static const char cb710_regf_8[] = "%02X"; +static const char cb710_regf_16[] = "%04X"; +static const char cb710_regf_32[] = "%08X"; +static const char cb710_xes[] = "xxxxxxxx"; + +#define CB710_DUMP_REGS_TEMPLATE(t) \ +static void cb710_dump_regs_##t(struct device *dev, \ + const u##t *reg, unsigned select) \ +{ \ + const char *const xp = &cb710_xes[8 - t/4]; \ + const char *const format = cb710_regf_##t; \ + \ + char msg[100], *p; \ + unsigned i, j; \ + \ + for (i = 0; i < ARRAY_SIZE(allow); ++i, reg += 16/(t/8)) { \ + if (!(select & (1 << i))) \ + continue; \ + p = msg; \ + for (j = 0; j < 0x10/(t/8); ++j) { \ + *p++ = ' '; \ + if (j == 8/(t/8)) \ + *p++ = ' '; \ + if (allow_reg_read(i, j, t)) \ + p += sprintf(p, format, reg[j]); \ + else \ + p += sprintf(p, "%s", xp); \ + } \ + dev_dbg(dev, "%s 0x%02X %s\n", prefix[i], i << 4, msg); \ + } \ +} + +#define CB710_READ_AND_DUMP_REGS_TEMPLATE(t) \ +static void cb710_read_and_dump_regs_##t(struct cb710_chip *chip, \ + unsigned select) \ +{ \ + u##t regs[CB710_REG_COUNT/sizeof(u##t)]; \ + \ + memset(®s, 0, sizeof(regs)); \ + cb710_read_regs_##t(chip->iobase, regs, select); \ + cb710_dump_regs_##t(cb710_chip_dev(chip), regs, select); \ +} + +#define CB710_REG_ACCESS_TEMPLATES(t) \ + CB710_READ_REGS_TEMPLATE(t) \ + CB710_DUMP_REGS_TEMPLATE(t) \ + CB710_READ_AND_DUMP_REGS_TEMPLATE(t) + +CB710_REG_ACCESS_TEMPLATES(8) +CB710_REG_ACCESS_TEMPLATES(16) +CB710_REG_ACCESS_TEMPLATES(32) + +void cb710_dump_regs(struct cb710_chip *chip, unsigned select) +{ + if (!(select & CB710_DUMP_REGS_MASK)) + select = CB710_DUMP_REGS_ALL; + if (!(select & CB710_DUMP_ACCESS_MASK)) + select |= CB710_DUMP_ACCESS_8; + + if (select & CB710_DUMP_ACCESS_32) + cb710_read_and_dump_regs_32(chip, select); + if (select & CB710_DUMP_ACCESS_16) + cb710_read_and_dump_regs_16(chip, select); + if (select & CB710_DUMP_ACCESS_8) + cb710_read_and_dump_regs_8(chip, select); +} +EXPORT_SYMBOL_GPL(cb710_dump_regs); + |