/*
 * POWER Data Stream Control Register (DSCR) sysfs interface test
 *
 * This test updates to system wide DSCR default through the sysfs interface
 * and then verifies that all the CPU specific DSCR defaults are updated as
 * well verified from their sysfs interfaces.
 *
 * Copyright 2015, Anshuman Khandual, IBM Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation.
 */
#include "dscr.h"

static int check_cpu_dscr_default(char *file, unsigned long val)
{
	char buf[10];
	int fd, rc;

	fd = open(file, O_RDWR);
	if (fd == -1) {
		perror("open() failed");
		return 1;
	}

	rc = read(fd, buf, sizeof(buf));
	if (rc == -1) {
		perror("read() failed");
		return 1;
	}
	close(fd);

	buf[rc] = '\0';
	if (strtol(buf, NULL, 16) != val) {
		printf("DSCR match failed: %ld (system) %ld (cpu)\n",
					val, strtol(buf, NULL, 16));
		return 1;
	}
	return 0;
}

static int check_all_cpu_dscr_defaults(unsigned long val)
{
	DIR *sysfs;
	struct dirent *dp;
	char file[LEN_MAX];

	sysfs = opendir(CPU_PATH);
	if (!sysfs) {
		perror("opendir() failed");
		return 1;
	}

	while ((dp = readdir(sysfs))) {
		if (!(dp->d_type & DT_DIR))
			continue;
		if (!strcmp(dp->d_name, "cpuidle"))
			continue;
		if (!strstr(dp->d_name, "cpu"))
			continue;

		sprintf(file, "%s%s/dscr", CPU_PATH, dp->d_name);
		if (access(file, F_OK))
			continue;

		if (check_cpu_dscr_default(file, val))
			return 1;
	}
	closedir(sysfs);
	return 0;
}

int dscr_sysfs(void)
{
	unsigned long orig_dscr_default;
	int i, j;

	orig_dscr_default = get_default_dscr();
	for (i = 0; i < COUNT; i++) {
		for (j = 0; j < DSCR_MAX; j++) {
			set_default_dscr(j);
			if (check_all_cpu_dscr_defaults(j))
				goto fail;
		}
	}
	set_default_dscr(orig_dscr_default);
	return 0;
fail:
	set_default_dscr(orig_dscr_default);
	return 1;
}

int main(int argc, char *argv[])
{
	return test_harness(dscr_sysfs, "dscr_sysfs_test");
}
o/asm?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/tools/virtio/asm'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/virtio?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>virtio</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/virtio/asm?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>asm</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'/><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>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-30 15:47:19 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-30 15:47:19 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/virtio/asm?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/virtio/asm?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>4078d3ae27d4ebb85bdcd4d84e9b9a4d059f22bb</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools/virtio/asm?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>tools/virtio/asm</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/virtio/asm?id=751321b3dd5040dc5be19bd23f985e80c914621a'>751321b3dd5040dc5be19bd23f985e80c914621a</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/virtio/asm?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b&amp;id2=751321b3dd5040dc5be19bd23f985e80c914621a'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/virtio/asm?id=54791b276b4000b307339f269d3bf7db877d536f'>54791b276b4000b307339f269d3bf7db877d536f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/virtio/asm?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b&amp;id2=54791b276b4000b307339f269d3bf7db877d536f'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc</div><div class='commit-msg'>Pull sparc fixes from David Miller:
 "Several small bug fixes and tidies, along with a fix for non-resumable
  memory errors triggered by userspace"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc64: Handle PIO &amp; MEM non-resumable errors.
  sparc64: Zero pages on allocation for mondo and error queues.
  sparc: Fixed typo in sstate.c. Replaced panicing with panicking
  sparc: use symbolic names for tsb indexing
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>Diffstat</a> (limited to 'tools/virtio/asm')</div><table summary='diffstat' class='diffstat'>