/*
 * Mapping of DWARF debug register numbers into register names.
 *
 * Copyright (C) 2010 Ian Munsie, IBM Corporation.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */

#include <stddef.h>
#include <errno.h>
#include <string.h>
#include <dwarf-regs.h>
#include <linux/ptrace.h>
#include <linux/kernel.h>
#include "util.h"

struct pt_regs_dwarfnum {
	const char *name;
	unsigned int dwarfnum;
	unsigned int ptregs_offset;
};

#define REG_DWARFNUM_NAME(r, num)					\
		{.name = STR(%)STR(r), .dwarfnum = num,			\
		.ptregs_offset = offsetof(struct pt_regs, r)}
#define GPR_DWARFNUM_NAME(num)						\
		{.name = STR(%gpr##num), .dwarfnum = num,		\
		.ptregs_offset = offsetof(struct pt_regs, gpr[num])}
#define REG_DWARFNUM_END {.name = NULL, .dwarfnum = 0, .ptregs_offset = 0}

/*
 * Reference:
 * http://refspecs.linuxfoundation.org/ELF/ppc64/PPC-elf64abi-1.9.html
 */
static const struct pt_regs_dwarfnum regdwarfnum_table[] = {
	GPR_DWARFNUM_NAME(0),
	GPR_DWARFNUM_NAME(1),
	GPR_DWARFNUM_NAME(2),
	GPR_DWARFNUM_NAME(3),
	GPR_DWARFNUM_NAME(4),
	GPR_DWARFNUM_NAME(5),
	GPR_DWARFNUM_NAME(6),
	GPR_DWARFNUM_NAME(7),
	GPR_DWARFNUM_NAME(8),
	GPR_DWARFNUM_NAME(9),
	GPR_DWARFNUM_NAME(10),
	GPR_DWARFNUM_NAME(11),
	GPR_DWARFNUM_NAME(12),
	GPR_DWARFNUM_NAME(13),
	GPR_DWARFNUM_NAME(14),
	GPR_DWARFNUM_NAME(15),
	GPR_DWARFNUM_NAME(16),
	GPR_DWARFNUM_NAME(17),
	GPR_DWARFNUM_NAME(18),
	GPR_DWARFNUM_NAME(19),
	GPR_DWARFNUM_NAME(20),
	GPR_DWARFNUM_NAME(21),
	GPR_DWARFNUM_NAME(22),
	GPR_DWARFNUM_NAME(23),
	GPR_DWARFNUM_NAME(24),
	GPR_DWARFNUM_NAME(25),
	GPR_DWARFNUM_NAME(26),
	GPR_DWARFNUM_NAME(27),
	GPR_DWARFNUM_NAME(28),
	GPR_DWARFNUM_NAME(29),
	GPR_DWARFNUM_NAME(30),
	GPR_DWARFNUM_NAME(31),
	REG_DWARFNUM_NAME(msr,   66),
	REG_DWARFNUM_NAME(ctr,   109),
	REG_DWARFNUM_NAME(link,  108),
	REG_DWARFNUM_NAME(xer,   101),
	REG_DWARFNUM_NAME(dar,   119),
	REG_DWARFNUM_NAME(dsisr, 118),
	REG_DWARFNUM_END,
};

/**
 * get_arch_regstr() - lookup register name from it's DWARF register number
 * @n:	the DWARF register number
 *
 * get_arch_regstr() returns the name of the register in struct
 * regdwarfnum_table from it's DWARF register number. If the register is not
 * found in the table, this returns NULL;
 */
const char *get_arch_regstr(unsigned int n)
{
	const struct pt_regs_dwarfnum *roff;
	for (roff = regdwarfnum_table; roff->name != NULL; roff++)
		if (roff->dwarfnum == n)
			return roff->name;
	return NULL;
}

int regs_query_register_offset(const char *name)
{
	const struct pt_regs_dwarfnum *roff;
	for (roff = regdwarfnum_table; roff->name != NULL; roff++)
		if (!strcmp(roff->name, name))
			return roff->ptregs_offset;
	return -EINVAL;
}
x/net-next.git/commit/net/x25?id=618c808968852609d2d9f0e5cfc351a4807ef8d0'>x25</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/x25/Kconfig?id=618c808968852609d2d9f0e5cfc351a4807ef8d0'>Kconfig</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='618c808968852609d2d9f0e5cfc351a4807ef8d0'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Chen-Yu Tsai &lt;wens@csie.org&gt;</td><td class='right'>2016-11-11 11:12:43 +0800</td></tr>
<tr><th>committer</th><td>Mark Brown &lt;broonie@kernel.org&gt;</td><td class='right'>2016-11-11 15:34:45 +0000</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/x25/Kconfig?id=618c808968852609d2d9f0e5cfc351a4807ef8d0'>618c808968852609d2d9f0e5cfc351a4807ef8d0</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/x25/Kconfig?id=618c808968852609d2d9f0e5cfc351a4807ef8d0'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=618c808968852609d2d9f0e5cfc351a4807ef8d0'>01a8d928c06fe7bef488f55bade6ba37b958bb5f</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/x25/Kconfig?id=618c808968852609d2d9f0e5cfc351a4807ef8d0'>net/x25/Kconfig</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/x25/Kconfig?id=1001354ca34179f3db924eb66672442a173147dc'>1001354ca34179f3db924eb66672442a173147dc</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/x25/Kconfig?id=618c808968852609d2d9f0e5cfc351a4807ef8d0&amp;id2=1001354ca34179f3db924eb66672442a173147dc'>diff</a>)</td></tr></table>
<div class='commit-subject'>regulator: axp20x: Fix axp809 ldo_io registration error on cold boot</div><div class='commit-msg'>The maximum supported voltage for ldo_io# is 3.3V, but on cold boot
the selector comes up at 0x1f, which maps to 3.8V. This was previously
corrected by Allwinner's U-boot, which set all regulators on the PMICs
to some pre-configured voltage. With recent progress in U-boot SPL
support, this is no longer the case. In any case we should handle
this quirk in the kernel driver as well.

This invalid setting causes _regulator_get_voltage() to fail with -EINVAL
which causes regulator registration to fail when constrains are used:

[    1.054181] vcc-pg: failed to get the current voltage(-22)
[    1.059670] axp20x-regulator axp20x-regulator.0: Failed to register ldo_io0
[    1.069749] axp20x-regulator: probe of axp20x-regulator.0 failed with error -22

This commits makes the axp20x regulator driver accept the 0x1f register
value, fixing this.

The datasheet does not guarantee reliable operation above 3.3V, so on
boards where this regulator is used the regulator-max-microvolt setting
must be 3.3V or less.

This is essentially the same as the commit f40d4896bf32 ("regulator:
axp20x: Fix axp22x ldo_io registration error on cold boot") for AXP22x
PMICs.

Fixes: a51f9f4622a3 ("regulator: axp20x: support AXP809 variant")
Signed-off-by: Chen-Yu Tsai &lt;wens@csie.org&gt;
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=618c808968852609d2d9f0e5cfc351a4807ef8d0'>Diffstat</a> (limited to 'net/x25/Kconfig')</div><table summary='diffstat' class='diffstat'>