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tools/power/turbostat: Add support for Xe sysfs knobs

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Xe graphics driver uses different graphics sysfs knobs including
   /sys/class/drm/card0/device/tile0/gt0/gtidle/idle_residency_ms
   /sys/class/drm/card0/device/tile0/gt0/freq0/cur_freq
   /sys/class/drm/card0/device/tile0/gt0/freq0/act_freq
   /sys/class/drm/card0/device/tile0/gt1/gtidle/idle_residency_ms
   /sys/class/drm/card0/device/tile0/gt1/freq0/cur_freq
   /sys/class/drm/card0/device/tile0/gt1/freq0/act_freq

Plus that,
   /sys/class/drm/card0/device/tile0/gt<n>/gtidle/name
returns either gt<n>-rc or gt<n>-mc. rc is for GFX and mc is SA Media.

Enhance turbostat to prefer the Xe sysfs knobs when they are available.
Export gt<n>-rc via BIC_GFX_rc6/BIC_GFXMHz/BIC_GFXACTMHz.
Export gt<n>-mc via BIC_SMA_mc6/BIC_SMAMHz/BIC_SMAACTMHz.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This commit is contained in:
Zhang Rui 2024-03-12 23:56:02 +08:00 committed by Len Brown
parent dc02dc937a
commit 91a91d3895
1 changed files with 51 additions and 0 deletions
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51
tools/power/x86/turbostat/turbostat.c
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@ -5380,6 +5380,57 @@ static void probe_intel_uncore_frequency(void)
static void probe_graphics(void)
{
/* Xe graphics sysfs knobs */
if (!access("/sys/class/drm/card0/device/tile0/gt0/gtidle/idle_residency_ms", R_OK)) {
FILE *fp;
char buf[8];
bool gt0_is_gt;
int idx;
fp = fopen("/sys/class/drm/card0/device/tile0/gt0/gtidle/name", "r");
if (!fp)
goto next;
if (!fread(buf, sizeof(char), 7, fp)) {
fclose(fp);
goto next;
}
fclose(fp);
if (!strncmp(buf, "gt0-rc", strlen("gt0-rc")))
gt0_is_gt = true;
else if (!strncmp(buf, "gt0-mc", strlen("gt0-mc")))
gt0_is_gt = false;
else
goto next;
idx = gt0_is_gt ? GFX_rc6 : SAM_mc6;
gfx_info[idx].path = "/sys/class/drm/card0/device/tile0/gt0/gtidle/idle_residency_ms";
idx = gt0_is_gt ? GFX_MHz : SAM_MHz;
if (!access("/sys/class/drm/card0/device/tile0/gt0/freq0/cur_freq", R_OK))
gfx_info[idx].path = "/sys/class/drm/card0/device/tile0/gt0/freq0/cur_freq";
idx = gt0_is_gt ? GFX_ACTMHz : SAM_ACTMHz;
if (!access("/sys/class/drm/card0/device/tile0/gt0/freq0/act_freq", R_OK))
gfx_info[idx].path = "/sys/class/drm/card0/device/tile0/gt0/freq0/act_freq";
idx = gt0_is_gt ? SAM_mc6 : GFX_rc6;
if (!access("/sys/class/drm/card0/device/tile0/gt1/gtidle/idle_residency_ms", R_OK))
gfx_info[idx].path = "/sys/class/drm/card0/device/tile0/gt1/gtidle/idle_residency_ms";
idx = gt0_is_gt ? SAM_MHz : GFX_MHz;
if (!access("/sys/class/drm/card0/device/tile0/gt1/freq0/cur_freq", R_OK))
gfx_info[idx].path = "/sys/class/drm/card0/device/tile0/gt1/freq0/cur_freq";
idx = gt0_is_gt ? SAM_ACTMHz : GFX_ACTMHz;
if (!access("/sys/class/drm/card0/device/tile0/gt1/freq0/act_freq", R_OK))
gfx_info[idx].path = "/sys/class/drm/card0/device/tile0/gt1/freq0/act_freq";
goto end;
}
next:
/* New i915 graphics sysfs knobs */
if (!access("/sys/class/drm/card0/gt/gt0/rc6_residency_ms", R_OK)) {
gfx_info[GFX_rc6].path = "/sys/class/drm/card0/gt/gt0/rc6_residency_ms";