1 /* 2 * cb710/debug.c 3 * 4 * Copyright by Michał Mirosław, 2008-2009 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10 #include <linux/cb710.h> 11 #include <linux/kernel.h> 12 #include <linux/module.h> 13 14 #define CB710_REG_COUNT 0x80 15 16 static const u16 allow[CB710_REG_COUNT/16] = { 17 0xFFF0, 0xFFFF, 0xFFFF, 0xFFFF, 18 0xFFF0, 0xFFFF, 0xFFFF, 0xFFFF, 19 }; 20 static const char *const prefix[ARRAY_SIZE(allow)] = { 21 "MMC", "MMC", "MMC", "MMC", 22 "MS?", "MS?", "SM?", "SM?" 23 }; 24 25 static inline int allow_reg_read(unsigned block, unsigned offset, unsigned bits) 26 { 27 unsigned mask = (1 << bits/8) - 1; 28 offset *= bits/8; 29 return ((allow[block] >> offset) & mask) == mask; 30 } 31 32 #define CB710_READ_REGS_TEMPLATE(t) \ 33 static void cb710_read_regs_##t(void __iomem *iobase, \ 34 u##t *reg, unsigned select) \ 35 { \ 36 unsigned i, j; \ 37 \ 38 for (i = 0; i < ARRAY_SIZE(allow); ++i, reg += 16/(t/8)) { \ 39 if (!(select & (1 << i))) \ 40 continue; \ 41 \ 42 for (j = 0; j < 0x10/(t/8); ++j) { \ 43 if (!allow_reg_read(i, j, t)) \ 44 continue; \ 45 reg[j] = ioread##t(iobase \ 46 + (i << 4) + (j * (t/8))); \ 47 } \ 48 } \ 49 } 50 51 static const char cb710_regf_8[] = "%02X"; 52 static const char cb710_regf_16[] = "%04X"; 53 static const char cb710_regf_32[] = "%08X"; 54 static const char cb710_xes[] = "xxxxxxxx"; 55 56 #define CB710_DUMP_REGS_TEMPLATE(t) \ 57 static void cb710_dump_regs_##t(struct device *dev, \ 58 const u##t *reg, unsigned select) \ 59 { \ 60 const char *const xp = &cb710_xes[8 - t/4]; \ 61 const char *const format = cb710_regf_##t; \ 62 \ 63 char msg[100], *p; \ 64 unsigned i, j; \ 65 \ 66 for (i = 0; i < ARRAY_SIZE(allow); ++i, reg += 16/(t/8)) { \ 67 if (!(select & (1 << i))) \ 68 continue; \ 69 p = msg; \ 70 for (j = 0; j < 0x10/(t/8); ++j) { \ 71 *p++ = ' '; \ 72 if (j == 8/(t/8)) \ 73 *p++ = ' '; \ 74 if (allow_reg_read(i, j, t)) \ 75 p += sprintf(p, format, reg[j]); \ 76 else \ 77 p += sprintf(p, "%s", xp); \ 78 } \ 79 dev_dbg(dev, "%s 0x%02X %s\n", prefix[i], i << 4, msg); \ 80 } \ 81 } 82 83 #define CB710_READ_AND_DUMP_REGS_TEMPLATE(t) \ 84 static void cb710_read_and_dump_regs_##t(struct cb710_chip *chip, \ 85 unsigned select) \ 86 { \ 87 u##t regs[CB710_REG_COUNT/sizeof(u##t)]; \ 88 \ 89 memset(®s, 0, sizeof(regs)); \ 90 cb710_read_regs_##t(chip->iobase, regs, select); \ 91 cb710_dump_regs_##t(cb710_chip_dev(chip), regs, select); \ 92 } 93 94 #define CB710_REG_ACCESS_TEMPLATES(t) \ 95 CB710_READ_REGS_TEMPLATE(t) \ 96 CB710_DUMP_REGS_TEMPLATE(t) \ 97 CB710_READ_AND_DUMP_REGS_TEMPLATE(t) 98 99 CB710_REG_ACCESS_TEMPLATES(8) 100 CB710_REG_ACCESS_TEMPLATES(16) 101 CB710_REG_ACCESS_TEMPLATES(32) 102 103 void cb710_dump_regs(struct cb710_chip *chip, unsigned select) 104 { 105 if (!(select & CB710_DUMP_REGS_MASK)) 106 select = CB710_DUMP_REGS_ALL; 107 if (!(select & CB710_DUMP_ACCESS_MASK)) 108 select |= CB710_DUMP_ACCESS_8; 109 110 if (select & CB710_DUMP_ACCESS_32) 111 cb710_read_and_dump_regs_32(chip, select); 112 if (select & CB710_DUMP_ACCESS_16) 113 cb710_read_and_dump_regs_16(chip, select); 114 if (select & CB710_DUMP_ACCESS_8) 115 cb710_read_and_dump_regs_8(chip, select); 116 } 117 EXPORT_SYMBOL_GPL(cb710_dump_regs); 118 119