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drm/xe/pf: Expose SR-IOV policy settings over debugfs

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We already have functions to configure SR-IOV policies.
Allow to tweak those policy settings over debugfs.

Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240423131244.2045-4-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko
2024-04-23 15:12:44 +02:00
parent b00240b6a2
commit 2cab6319b4
1 changed files with 53 additions and 0 deletions
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53
drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c
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@@ -17,6 +17,7 @@
#include "xe_gt_sriov_pf_control.h"
#include "xe_gt_sriov_pf_debugfs.h"
#include "xe_gt_sriov_pf_helpers.h"
#include "xe_gt_sriov_pf_policy.h"
#include "xe_pm.h"
/*
@@ -76,6 +77,57 @@ static const struct drm_info_list pf_info[] = {
},
};
/*
* /sys/kernel/debug/dri/0/
* ├── gt0
* │   ├── pf
* │   │   ├── reset_engine
* │   │   ├── sample_period
* │   │   ├── sched_if_idle
*/
#define DEFINE_SRIOV_GT_POLICY_DEBUGFS_ATTRIBUTE(POLICY, TYPE, FORMAT) \
\
static int POLICY##_set(void *data, u64 val) \
{ \
struct xe_gt *gt = extract_gt(data); \
struct xe_device *xe = gt_to_xe(gt); \
int err; \
\
if (val > (TYPE)~0ull) \
return -EOVERFLOW; \
\
xe_pm_runtime_get(xe); \
err = xe_gt_sriov_pf_policy_set_##POLICY(gt, val); \
xe_pm_runtime_put(xe); \
\
return err; \
} \
\
static int POLICY##_get(void *data, u64 *val) \
{ \
struct xe_gt *gt = extract_gt(data); \
\
*val = xe_gt_sriov_pf_policy_get_##POLICY(gt); \
return 0; \
} \
\
DEFINE_DEBUGFS_ATTRIBUTE(POLICY##_fops, POLICY##_get, POLICY##_set, FORMAT)
DEFINE_SRIOV_GT_POLICY_DEBUGFS_ATTRIBUTE(reset_engine, bool, "%llu\n");
DEFINE_SRIOV_GT_POLICY_DEBUGFS_ATTRIBUTE(sched_if_idle, bool, "%llu\n");
DEFINE_SRIOV_GT_POLICY_DEBUGFS_ATTRIBUTE(sample_period, u32, "%llu\n");
static void pf_add_policy_attrs(struct xe_gt *gt, struct dentry *parent)
{
xe_gt_assert(gt, gt == extract_gt(parent));
xe_gt_assert(gt, PFID == extract_vfid(parent));
debugfs_create_file_unsafe("reset_engine", 0644, parent, parent, &reset_engine_fops);
debugfs_create_file_unsafe("sched_if_idle", 0644, parent, parent, &sched_if_idle_fops);
debugfs_create_file_unsafe("sample_period_ms", 0644, parent, parent, &sample_period_fops);
}
/*
* /sys/kernel/debug/dri/0/
* ├── gt0
@@ -261,6 +313,7 @@ void xe_gt_sriov_pf_debugfs_register(struct xe_gt *gt, struct dentry *root)
pfdentry->d_inode->i_private = gt;
drm_debugfs_create_files(pf_info, ARRAY_SIZE(pf_info), pfdentry, minor);
pf_add_policy_attrs(gt, pfdentry);
pf_add_config_attrs(gt, pfdentry, PFID);
for (n = 1; n <= totalvfs; n++) {