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drm/xe/debugfs: Add debugfs for pcode information

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Introduce a pcode_info debugfs entry to report pcode details.
This initial implementation exposes the pcode version.
This can aid debugging when the pcode version is needed.

Signed-off-by: Karthik Poosa <karthik.poosa@intel.com>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Link: https://patch.msgid.link/20260702092540.1005095-3-karthik.poosa@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
This commit is contained in:
Karthik Poosa 2026-07-02 14:55:40 +05:30 committed by Matt Roper
parent f7c05238ab
commit 0f800465ec
1 changed files with 33 additions and 0 deletions
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33
drivers/gpu/drm/xe/xe_debugfs.c
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@ -21,6 +21,7 @@
#include "xe_guc_ads.h"
#include "xe_hw_engine.h"
#include "xe_mmio.h"
#include "xe_pcode.h"
#include "xe_pm.h"
#include "xe_psmi.h"
#include "xe_pxp_debugfs.h"
@ -160,6 +161,22 @@ static int workaround_info(struct seq_file *m, void *data)
return 0;
}
static int pcode_info(struct seq_file *m, void *data)
{
struct xe_device *xe = node_to_xe(m->private);
struct drm_printer p = drm_seq_file_printer(m);
struct xe_pcode_version version;
int ret = 0;
ret = xe_get_pcode_version(xe, &version);
if (ret)
return ret;
drm_printf(&p, "pcode version: %u.%u.%u\n", version.major,
version.minor, version.engg);
return 0;
}
static int dgfx_pkg_residencies_show(struct seq_file *m, void *data)
{
struct xe_device *xe;
@ -220,6 +237,10 @@ static const struct drm_info_list debugfs_list[] = {
{ .name = "workarounds", .show = workaround_info, },
};
static const struct drm_info_list pcode_info_debugfs[] = {
{ .name = "pcode_info", .show = pcode_info, },
};
static const struct drm_info_list debugfs_residencies[] = {
{ .name = "dgfx_pkg_residencies", .show = dgfx_pkg_residencies_show, },
{ .name = "dgfx_pcie_link_residencies", .show = dgfx_pcie_link_residencies_show, },
@ -566,6 +587,18 @@ void xe_debugfs_register(struct xe_device *xe)
&inject_csc_hw_error);
}
/*
* Pcode version read from PMT is currently only supported on CRI and BMG platforms in PF
* mode, as both platforms support the necessary telemetry read mechanism and have a fixed
* PUNIT_VERSION_OFFSET.
* Attempting this access on other platforms must be verified before enabling support.
*/
if (!IS_SRIOV_VF(xe) &&
(xe->info.platform == XE_CRESCENTISLAND || xe->info.platform == XE_BATTLEMAGE))
drm_debugfs_create_files(pcode_info_debugfs,
ARRAY_SIZE(pcode_info_debugfs),
root, minor);
debugfs_create_file("forcewake_all", 0400, root, xe,
&forcewake_all_fops);