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-rw-r--r--drivers/gpu/drm/xe/Makefile1
-rw-r--r--drivers/gpu/drm/xe/xe_gt_debugfs.c5
-rw-r--r--drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c203
-rw-r--r--drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.h18
4 files changed, 227 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/Makefile b/drivers/gpu/drm/xe/Makefile
index 4fba50036539..efd660553673 100644
--- a/drivers/gpu/drm/xe/Makefile
+++ b/drivers/gpu/drm/xe/Makefile
@@ -163,6 +163,7 @@ xe-$(CONFIG_PCI_IOV) += \
xe_gt_sriov_pf.o \
xe_gt_sriov_pf_config.o \
xe_gt_sriov_pf_control.o \
+ xe_gt_sriov_pf_debugfs.o \
xe_gt_sriov_pf_policy.o \
xe_gt_sriov_pf_service.o \
xe_lmtt.o \
diff --git a/drivers/gpu/drm/xe/xe_gt_debugfs.c b/drivers/gpu/drm/xe/xe_gt_debugfs.c
index ff7f4cf52fa9..599aed47f2ba 100644
--- a/drivers/gpu/drm/xe/xe_gt_debugfs.c
+++ b/drivers/gpu/drm/xe/xe_gt_debugfs.c
@@ -13,6 +13,7 @@
#include "xe_ggtt.h"
#include "xe_gt.h"
#include "xe_gt_mcr.h"
+#include "xe_gt_sriov_pf_debugfs.h"
#include "xe_gt_topology.h"
#include "xe_hw_engine.h"
#include "xe_lrc.h"
@@ -21,6 +22,7 @@
#include "xe_pm.h"
#include "xe_reg_sr.h"
#include "xe_reg_whitelist.h"
+#include "xe_sriov.h"
#include "xe_uc_debugfs.h"
#include "xe_wa.h"
@@ -288,4 +290,7 @@ void xe_gt_debugfs_register(struct xe_gt *gt)
root, minor);
xe_uc_debugfs_register(&gt->uc, root);
+
+ if (IS_SRIOV_PF(xe))
+ xe_gt_sriov_pf_debugfs_register(gt, root);
}
diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c b/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c
new file mode 100644
index 000000000000..32ce98698690
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c
@@ -0,0 +1,203 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2023-2024 Intel Corporation
+ */
+
+#include <linux/debugfs.h>
+
+#include <drm/drm_print.h>
+#include <drm/drm_debugfs.h>
+
+#include "xe_bo.h"
+#include "xe_debugfs.h"
+#include "xe_device.h"
+#include "xe_gt.h"
+#include "xe_gt_debugfs.h"
+#include "xe_gt_sriov_pf_config.h"
+#include "xe_gt_sriov_pf_debugfs.h"
+#include "xe_gt_sriov_pf_helpers.h"
+#include "xe_pm.h"
+
+/*
+ * /sys/kernel/debug/dri/0/
+ * ├── gt0 # d_inode->i_private = gt
+ * │   ├── pf # d_inode->i_private = gt
+ * │   ├── vf1 # d_inode->i_private = VFID(1)
+ * :   :
+ * │   ├── vfN # d_inode->i_private = VFID(N)
+ */
+
+static void *extract_priv(struct dentry *d)
+{
+ return d->d_inode->i_private;
+}
+
+static struct xe_gt *extract_gt(struct dentry *d)
+{
+ return extract_priv(d->d_parent);
+}
+
+static unsigned int extract_vfid(struct dentry *d)
+{
+ return extract_priv(d) == extract_gt(d) ? PFID : (uintptr_t)extract_priv(d);
+}
+
+/*
+ * /sys/kernel/debug/dri/0/
+ * ├── gt0
+ * │   ├── pf
+ * │   │   ├── ggtt_available
+ * │   │   ├── ggtt_provisioned
+ * │   │   ├── contexts_provisioned
+ * │   │   ├── doorbells_provisioned
+ */
+
+static const struct drm_info_list pf_info[] = {
+ {
+ "ggtt_available",
+ .show = xe_gt_debugfs_simple_show,
+ .data = xe_gt_sriov_pf_config_print_available_ggtt,
+ },
+ {
+ "ggtt_provisioned",
+ .show = xe_gt_debugfs_simple_show,
+ .data = xe_gt_sriov_pf_config_print_ggtt,
+ },
+ {
+ "contexts_provisioned",
+ .show = xe_gt_debugfs_simple_show,
+ .data = xe_gt_sriov_pf_config_print_ctxs,
+ },
+ {
+ "doorbells_provisioned",
+ .show = xe_gt_debugfs_simple_show,
+ .data = xe_gt_sriov_pf_config_print_dbs,
+ },
+};
+
+/*
+ * /sys/kernel/debug/dri/0/
+ * ├── gt0
+ * │   ├── pf
+ * │   │   ├── ggtt_spare
+ * │   │   ├── lmem_spare
+ * │   │   ├── doorbells_spare
+ * │   │   ├── contexts_spare
+ * │   │   ├── exec_quantum_ms
+ * │   │   ├── preempt_timeout_us
+ * │   ├── vf1
+ * │   │   ├── ggtt_quota
+ * │   │   ├── lmem_quota
+ * │   │   ├── doorbells_quota
+ * │   │   ├── contexts_quota
+ * │   │   ├── exec_quantum_ms
+ * │   │   ├── preempt_timeout_us
+ */
+
+#define DEFINE_SRIOV_GT_CONFIG_DEBUGFS_ATTRIBUTE(CONFIG, TYPE, FORMAT) \
+ \
+static int CONFIG##_set(void *data, u64 val) \
+{ \
+ struct xe_gt *gt = extract_gt(data); \
+ unsigned int vfid = extract_vfid(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_config_set_##CONFIG(gt, vfid, val); \
+ xe_pm_runtime_put(xe); \
+ \
+ return err; \
+} \
+ \
+static int CONFIG##_get(void *data, u64 *val) \
+{ \
+ struct xe_gt *gt = extract_gt(data); \
+ unsigned int vfid = extract_vfid(data); \
+ \
+ *val = xe_gt_sriov_pf_config_get_##CONFIG(gt, vfid); \
+ return 0; \
+} \
+ \
+DEFINE_DEBUGFS_ATTRIBUTE(CONFIG##_fops, CONFIG##_get, CONFIG##_set, FORMAT)
+
+DEFINE_SRIOV_GT_CONFIG_DEBUGFS_ATTRIBUTE(ggtt, u64, "%llu\n");
+DEFINE_SRIOV_GT_CONFIG_DEBUGFS_ATTRIBUTE(lmem, u64, "%llu\n");
+DEFINE_SRIOV_GT_CONFIG_DEBUGFS_ATTRIBUTE(ctxs, u32, "%llu\n");
+DEFINE_SRIOV_GT_CONFIG_DEBUGFS_ATTRIBUTE(dbs, u32, "%llu\n");
+DEFINE_SRIOV_GT_CONFIG_DEBUGFS_ATTRIBUTE(exec_quantum, u32, "%llu\n");
+DEFINE_SRIOV_GT_CONFIG_DEBUGFS_ATTRIBUTE(preempt_timeout, u32, "%llu\n");
+
+static void pf_add_config_attrs(struct xe_gt *gt, struct dentry *parent, unsigned int vfid)
+{
+ xe_gt_assert(gt, gt == extract_gt(parent));
+ xe_gt_assert(gt, vfid == extract_vfid(parent));
+
+ if (!xe_gt_is_media_type(gt)) {
+ debugfs_create_file_unsafe(vfid ? "ggtt_quota" : "ggtt_spare",
+ 0644, parent, parent, &ggtt_fops);
+ if (IS_DGFX(gt_to_xe(gt)))
+ debugfs_create_file_unsafe(vfid ? "lmem_quota" : "lmem_spare",
+ 0644, parent, parent, &lmem_fops);
+ }
+ debugfs_create_file_unsafe(vfid ? "doorbells_quota" : "doorbells_spare",
+ 0644, parent, parent, &dbs_fops);
+ debugfs_create_file_unsafe(vfid ? "contexts_quota" : "contexts_spare",
+ 0644, parent, parent, &ctxs_fops);
+ debugfs_create_file_unsafe("exec_quantum_ms", 0644, parent, parent,
+ &exec_quantum_fops);
+ debugfs_create_file_unsafe("preempt_timeout_us", 0644, parent, parent,
+ &preempt_timeout_fops);
+}
+
+/**
+ * xe_gt_sriov_pf_debugfs_register - Register SR-IOV PF specific entries in GT debugfs.
+ * @gt: the &xe_gt to register
+ * @root: the &dentry that represents the GT directory
+ *
+ * Register SR-IOV PF entries that are GT related and must be shown under GT debugfs.
+ */
+void xe_gt_sriov_pf_debugfs_register(struct xe_gt *gt, struct dentry *root)
+{
+ struct xe_device *xe = gt_to_xe(gt);
+ struct drm_minor *minor = xe->drm.primary;
+ int n, totalvfs = xe_sriov_pf_get_totalvfs(xe);
+ struct dentry *pfdentry;
+ struct dentry *vfdentry;
+ char buf[14]; /* should be enough up to "vf%u\0" for 2^32 - 1 */
+
+ xe_gt_assert(gt, IS_SRIOV_PF(xe));
+ xe_gt_assert(gt, root->d_inode->i_private == gt);
+
+ /*
+ * /sys/kernel/debug/dri/0/
+ * ├── gt0
+ * │   ├── pf
+ */
+ pfdentry = debugfs_create_dir("pf", root);
+ if (IS_ERR(pfdentry))
+ return;
+ pfdentry->d_inode->i_private = gt;
+
+ drm_debugfs_create_files(pf_info, ARRAY_SIZE(pf_info), pfdentry, minor);
+ pf_add_config_attrs(gt, pfdentry, PFID);
+
+ for (n = 1; n <= totalvfs; n++) {
+ /*
+ * /sys/kernel/debug/dri/0/
+ * ├── gt0
+ * │   ├── vf1
+ * │   ├── vf2
+ */
+ snprintf(buf, sizeof(buf), "vf%u", n);
+ vfdentry = debugfs_create_dir(buf, root);
+ if (IS_ERR(vfdentry))
+ break;
+ vfdentry->d_inode->i_private = (void *)(uintptr_t)n;
+
+ pf_add_config_attrs(gt, vfdentry, VFID(n));
+ }
+}
diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.h b/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.h
new file mode 100644
index 000000000000..038cc8ddc244
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2023-2024 Intel Corporation
+ */
+
+#ifndef _XE_GT_SRIOV_PF_DEBUGFS_H_
+#define _XE_GT_SRIOV_PF_DEBUGFS_H_
+
+struct xe_gt;
+struct dentry;
+
+#ifdef CONFIG_PCI_IOV
+void xe_gt_sriov_pf_debugfs_register(struct xe_gt *gt, struct dentry *root);
+#else
+static inline void xe_gt_sriov_pf_debugfs_register(struct xe_gt *gt, struct dentry *root) { }
+#endif
+
+#endif
generated by cgit v1.2.3 (git 2.0.4) at 2025-11-19 18:36:56 +0000