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pm_rps: Add stop rings injection utility

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Signed-off-by: Jeff McGee <jeff.mcgee@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Jeff McGee 2014-01-31 10:13:50 -06:00 committed by Daniel Vetter
parent 2cbb0fbf5f
commit 2d16e0aad7
1 changed files with 37 additions and 0 deletions
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37
tests/pm_rps.c
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@ -32,10 +32,12 @@
#include <string.h>
#include <unistd.h>
#include <getopt.h>
#include <fcntl.h>
#include "drmtest.h"
#include "intel_gpu_tools.h"
#include "intel_bufmgr.h"
#include "intel_batchbuffer.h"
#include "igt_debugfs.h"
static bool verbose = false;
@ -62,6 +64,8 @@ struct junk {
{ "cur", "r", NULL }, { "min", "rb+", NULL }, { "max", "rb+", NULL }, { "RP0", "r", NULL }, { "RP1", "r", NULL }, { "RPn", "r", NULL }, { NULL, NULL, NULL }
};
static igt_debugfs_t dfs;
static int readval(FILE *filp)
{
int val;
@ -267,6 +271,37 @@ static void load_helper_deinit(void)
drm_intel_bufmgr_destroy(lh.bufmgr);
}
static void stop_rings(void)
{
int fd;
static const char data[] = "0xf";
fd = igt_debugfs_open(&dfs, "i915_ring_stop", O_WRONLY);
igt_assert(fd >= 0);
log("injecting ring stop\n");
igt_assert(write(fd, data, sizeof(data)) == sizeof(data));
close(fd);
}
static bool rings_stopped(void)
{
int fd;
static char buf[128];
unsigned long long val;
fd = igt_debugfs_open(&dfs, "i915_ring_stop", O_RDONLY);
igt_assert(fd >= 0);
igt_assert(read(fd, buf, sizeof(buf)) > 0);
close(fd);
sscanf(buf, "%llx", &val);
return (bool)val;
}
static void min_max_config(void (*check)(void))
{
int fmid = (origfreqs[RPn] + origfreqs[RP0]) / 2;
@ -471,6 +506,8 @@ int main(int argc, char **argv)
igt_install_exit_handler(pm_rps_exit_handler);
load_helper_init();
igt_debugfs_init(&dfs);
}
igt_subtest("basic-api")