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drm/xe: Add HW Engine snapshot to xe_devcoredump.

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Let's continue to add our existent simple logs to devcoredump one
by one. Any format change should come on follow-up work.

v2: remove unnecessary, and now duplicated, dma_fence annotation. (Matthew)
v3: avoid for_each with faulty_engine since that can be already freed at
    the time of the read/free. Instead, iterate in the full array of
    hw_engines. (Kasan)

Cc: Francois Dugast <francois.dugast@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Francois Dugast <francois.dugast@intel.com>
This commit is contained in:
Rodrigo Vivi
2023-05-16 10:54:15 -04:00
parent a4db555587
commit 01a87f3181
2 changed files with 45 additions and 0 deletions
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41
drivers/gpu/drm/xe/xe_devcoredump.c
View File

@@ -9,10 +9,13 @@
#include <linux/devcoredump.h>
#include <generated/utsrelease.h>
#include "xe_device.h"
#include "xe_engine.h"
#include "xe_force_wake.h"
#include "xe_gt.h"
#include "xe_guc_ct.h"
#include "xe_guc_submit.h"
#include "xe_hw_engine.h"
/**
* DOC: Xe device coredump
@@ -63,6 +66,7 @@ static ssize_t xe_devcoredump_read(char *buffer, loff_t offset,
struct drm_printer p;
struct drm_print_iterator iter;
struct timespec64 ts;
int i;
/* Our device is gone already... */
if (!data || !coredump_to_xe(coredump))
@@ -89,12 +93,19 @@ static ssize_t xe_devcoredump_read(char *buffer, loff_t offset,
xe_guc_ct_snapshot_print(coredump->snapshot.ct, &p);
xe_guc_engine_snapshot_print(coredump->snapshot.ge, &p);
drm_printf(&p, "\n**** HW Engines ****\n");
for (i = 0; i < XE_NUM_HW_ENGINES; i++)
if (coredump->snapshot.hwe[i])
xe_hw_engine_snapshot_print(coredump->snapshot.hwe[i],
&p);
return count - iter.remain;
}
static void xe_devcoredump_free(void *data)
{
struct xe_devcoredump *coredump = data;
int i;
/* Our device is gone. Nothing to do... */
if (!data || !coredump_to_xe(coredump))
@@ -102,6 +113,9 @@ static void xe_devcoredump_free(void *data)
xe_guc_ct_snapshot_free(coredump->snapshot.ct);
xe_guc_engine_snapshot_free(coredump->snapshot.ge);
for (i = 0; i < XE_NUM_HW_ENGINES; i++)
if (coredump->snapshot.hwe[i])
xe_hw_engine_snapshot_free(coredump->snapshot.hwe[i]);
coredump->captured = false;
drm_info(&coredump_to_xe(coredump)->drm,
@@ -113,14 +127,41 @@ static void devcoredump_snapshot(struct xe_devcoredump *coredump,
{
struct xe_devcoredump_snapshot *ss = &coredump->snapshot;
struct xe_guc *guc = engine_to_guc(e);
struct xe_hw_engine *hwe;
enum xe_hw_engine_id id;
u32 adj_logical_mask = e->logical_mask;
u32 width_mask = (0x1 << e->width) - 1;
int i;
bool cookie;
ss->snapshot_time = ktime_get_real();
ss->boot_time = ktime_get_boottime();
cookie = dma_fence_begin_signalling();
for (i = 0; e->width > 1 && i < XE_HW_ENGINE_MAX_INSTANCE;) {
if (adj_logical_mask & BIT(i)) {
adj_logical_mask |= width_mask << i;
i += e->width;
} else {
++i;
}
}
xe_force_wake_get(gt_to_fw(e->gt), XE_FORCEWAKE_ALL);
coredump->snapshot.ct = xe_guc_ct_snapshot_capture(&guc->ct, true);
coredump->snapshot.ge = xe_guc_engine_snapshot_capture(e);
for_each_hw_engine(hwe, e->gt, id) {
if (hwe->class != e->hwe->class ||
!(BIT(hwe->logical_instance) & adj_logical_mask)) {
coredump->snapshot.hwe[id] = NULL;
continue;
}
coredump->snapshot.hwe[id] = xe_hw_engine_snapshot_capture(hwe);
}
xe_force_wake_put(gt_to_fw(e->gt), XE_FORCEWAKE_ALL);
dma_fence_end_signalling(cookie);
}