mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 05:47:04 +07:00
120 lines
3.3 KiB
C
120 lines
3.3 KiB
C
/*
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* cb710/debug.c
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*
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* Copyright by Michał Mirosław, 2008-2009
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/cb710.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#define CB710_REG_COUNT 0x80
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static const u16 allow[CB710_REG_COUNT/16] = {
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0xFFF0, 0xFFFF, 0xFFFF, 0xFFFF,
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0xFFF0, 0xFFFF, 0xFFFF, 0xFFFF,
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};
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static const char *const prefix[ARRAY_SIZE(allow)] = {
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"MMC", "MMC", "MMC", "MMC",
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"MS?", "MS?", "SM?", "SM?"
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};
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static inline int allow_reg_read(unsigned block, unsigned offset, unsigned bits)
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{
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unsigned mask = (1 << bits/8) - 1;
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offset *= bits/8;
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return ((allow[block] >> offset) & mask) == mask;
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}
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#define CB710_READ_REGS_TEMPLATE(t) \
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static void cb710_read_regs_##t(void __iomem *iobase, \
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u##t *reg, unsigned select) \
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{ \
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unsigned i, j; \
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\
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for (i = 0; i < ARRAY_SIZE(allow); ++i, reg += 16/(t/8)) { \
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if (!(select & (1 << i))) \
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continue; \
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\
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for (j = 0; j < 0x10/(t/8); ++j) { \
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if (!allow_reg_read(i, j, t)) \
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continue; \
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reg[j] = ioread##t(iobase \
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+ (i << 4) + (j * (t/8))); \
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} \
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} \
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}
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static const char cb710_regf_8[] = "%02X";
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static const char cb710_regf_16[] = "%04X";
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static const char cb710_regf_32[] = "%08X";
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static const char cb710_xes[] = "xxxxxxxx";
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#define CB710_DUMP_REGS_TEMPLATE(t) \
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static void cb710_dump_regs_##t(struct device *dev, \
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const u##t *reg, unsigned select) \
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{ \
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const char *const xp = &cb710_xes[8 - t/4]; \
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const char *const format = cb710_regf_##t; \
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\
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char msg[100], *p; \
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unsigned i, j; \
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\
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for (i = 0; i < ARRAY_SIZE(allow); ++i, reg += 16/(t/8)) { \
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if (!(select & (1 << i))) \
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continue; \
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p = msg; \
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for (j = 0; j < 0x10/(t/8); ++j) { \
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*p++ = ' '; \
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if (j == 8/(t/8)) \
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*p++ = ' '; \
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if (allow_reg_read(i, j, t)) \
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p += sprintf(p, format, reg[j]); \
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else \
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p += sprintf(p, "%s", xp); \
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} \
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dev_dbg(dev, "%s 0x%02X %s\n", prefix[i], i << 4, msg); \
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} \
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}
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#define CB710_READ_AND_DUMP_REGS_TEMPLATE(t) \
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static void cb710_read_and_dump_regs_##t(struct cb710_chip *chip, \
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unsigned select) \
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{ \
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u##t regs[CB710_REG_COUNT/sizeof(u##t)]; \
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\
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memset(®s, 0, sizeof(regs)); \
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cb710_read_regs_##t(chip->iobase, regs, select); \
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cb710_dump_regs_##t(cb710_chip_dev(chip), regs, select); \
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}
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#define CB710_REG_ACCESS_TEMPLATES(t) \
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CB710_READ_REGS_TEMPLATE(t) \
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CB710_DUMP_REGS_TEMPLATE(t) \
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CB710_READ_AND_DUMP_REGS_TEMPLATE(t)
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CB710_REG_ACCESS_TEMPLATES(8)
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CB710_REG_ACCESS_TEMPLATES(16)
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CB710_REG_ACCESS_TEMPLATES(32)
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void cb710_dump_regs(struct cb710_chip *chip, unsigned select)
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{
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if (!(select & CB710_DUMP_REGS_MASK))
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select = CB710_DUMP_REGS_ALL;
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if (!(select & CB710_DUMP_ACCESS_MASK))
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select |= CB710_DUMP_ACCESS_8;
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if (select & CB710_DUMP_ACCESS_32)
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cb710_read_and_dump_regs_32(chip, select);
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if (select & CB710_DUMP_ACCESS_16)
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cb710_read_and_dump_regs_16(chip, select);
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if (select & CB710_DUMP_ACCESS_8)
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cb710_read_and_dump_regs_8(chip, select);
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}
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EXPORT_SYMBOL_GPL(cb710_dump_regs);
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