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path: root/drivers/gpu/drm/xe/xe_tile_sriov_pf_debugfs.c
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Diffstat (limited to 'drivers/gpu/drm/xe/xe_tile_sriov_pf_debugfs.c')
-rw-r--r--drivers/gpu/drm/xe/xe_tile_sriov_pf_debugfs.c253
1 files changed, 253 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_tile_sriov_pf_debugfs.c b/drivers/gpu/drm/xe/xe_tile_sriov_pf_debugfs.c
new file mode 100644
index 000000000000..f3f478f14ff5
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_tile_sriov_pf_debugfs.c
@@ -0,0 +1,253 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2025 Intel Corporation
+ */
+
+#include <linux/debugfs.h>
+#include <drm/drm_debugfs.h>
+
+#include "xe_device.h"
+#include "xe_device_types.h"
+#include "xe_gt_sriov_pf_config.h"
+#include "xe_gt_sriov_pf_debugfs.h"
+#include "xe_pm.h"
+#include "xe_tile_debugfs.h"
+#include "xe_tile_sriov_pf_debugfs.h"
+#include "xe_sriov.h"
+#include "xe_sriov_pf.h"
+#include "xe_sriov_pf_provision.h"
+
+/*
+ * /sys/kernel/debug/dri/BDF/
+ * ├── sriov # d_inode->i_private = (xe_device*)
+ * │ ├── pf # d_inode->i_private = (xe_device*)
+ * │ │ ├── tile0 # d_inode->i_private = (xe_tile*)
+ * │ │ ├── tile1
+ * │ │ : :
+ * │ ├── vf1 # d_inode->i_private = VFID(1)
+ * │ │ ├── tile0 # d_inode->i_private = (xe_tile*)
+ * │ │ ├── tile1
+ * │ │ : :
+ * │ ├── vfN # d_inode->i_private = VFID(N)
+ * │ │ ├── tile0 # d_inode->i_private = (xe_tile*)
+ * │ │ ├── tile1
+ * : : : :
+ */
+
+static void *extract_priv(struct dentry *d)
+{
+ return d->d_inode->i_private;
+}
+
+__maybe_unused
+static struct xe_tile *extract_tile(struct dentry *d)
+{
+ return extract_priv(d);
+}
+
+static struct xe_device *extract_xe(struct dentry *d)
+{
+ return extract_priv(d->d_parent->d_parent);
+}
+
+__maybe_unused
+static unsigned int extract_vfid(struct dentry *d)
+{
+ void *pp = extract_priv(d->d_parent);
+
+ return pp == extract_xe(d) ? PFID : (uintptr_t)pp;
+}
+
+/*
+ * /sys/kernel/debug/dri/BDF/
+ * ├── sriov
+ * : ├── pf
+ * : ├── tile0
+ * : ├── ggtt_available
+ * ├── ggtt_provisioned
+ */
+
+static int pf_config_print_available_ggtt(struct xe_tile *tile, struct drm_printer *p)
+{
+ return xe_gt_sriov_pf_config_print_available_ggtt(tile->primary_gt, p);
+}
+
+static int pf_config_print_ggtt(struct xe_tile *tile, struct drm_printer *p)
+{
+ return xe_gt_sriov_pf_config_print_ggtt(tile->primary_gt, p);
+}
+
+static const struct drm_info_list pf_ggtt_info[] = {
+ {
+ "ggtt_available",
+ .show = xe_tile_debugfs_simple_show,
+ .data = pf_config_print_available_ggtt,
+ },
+ {
+ "ggtt_provisioned",
+ .show = xe_tile_debugfs_simple_show,
+ .data = pf_config_print_ggtt,
+ },
+};
+
+/*
+ * /sys/kernel/debug/dri/BDF/
+ * ├── sriov
+ * : ├── pf
+ * : ├── tile0
+ * : ├── vram_provisioned
+ */
+
+static int pf_config_print_vram(struct xe_tile *tile, struct drm_printer *p)
+{
+ return xe_gt_sriov_pf_config_print_lmem(tile->primary_gt, p);
+}
+
+static const struct drm_info_list pf_vram_info[] = {
+ {
+ "vram_provisioned",
+ .show = xe_tile_debugfs_simple_show,
+ .data = pf_config_print_vram,
+ },
+};
+
+/*
+ * /sys/kernel/debug/dri/BDF/
+ * ├── sriov
+ * │ ├── pf
+ * │ │ ├── tile0
+ * │ │ │ ├── ggtt_spare
+ * │ │ │ ├── vram_spare
+ * │ │ ├── tile1
+ * │ │ : :
+ * │ ├── vf1
+ * │ : ├── tile0
+ * │ │ ├── ggtt_quota
+ * │ │ ├── vram_quota
+ * │ ├── tile1
+ * │ : :
+ */
+
+#define DEFINE_SRIOV_TILE_CONFIG_DEBUGFS_ATTRIBUTE(NAME, CONFIG, TYPE, FORMAT) \
+ \
+static int NAME##_set(void *data, u64 val) \
+{ \
+ struct xe_tile *tile = extract_tile(data); \
+ unsigned int vfid = extract_vfid(data); \
+ struct xe_gt *gt = tile->primary_gt; \
+ struct xe_device *xe = tile->xe; \
+ int err; \
+ \
+ if (val > (TYPE)~0ull) \
+ return -EOVERFLOW; \
+ \
+ xe_pm_runtime_get(xe); \
+ err = xe_sriov_pf_wait_ready(xe) ?: \
+ xe_gt_sriov_pf_config_set_##CONFIG(gt, vfid, val); \
+ if (!err) \
+ xe_sriov_pf_provision_set_custom_mode(xe); \
+ xe_pm_runtime_put(xe); \
+ \
+ return err; \
+} \
+ \
+static int NAME##_get(void *data, u64 *val) \
+{ \
+ struct xe_tile *tile = extract_tile(data); \
+ unsigned int vfid = extract_vfid(data); \
+ struct xe_gt *gt = tile->primary_gt; \
+ \
+ *val = xe_gt_sriov_pf_config_get_##CONFIG(gt, vfid); \
+ return 0; \
+} \
+ \
+DEFINE_DEBUGFS_ATTRIBUTE(NAME##_fops, NAME##_get, NAME##_set, FORMAT)
+
+DEFINE_SRIOV_TILE_CONFIG_DEBUGFS_ATTRIBUTE(ggtt, ggtt, u64, "%llu\n");
+DEFINE_SRIOV_TILE_CONFIG_DEBUGFS_ATTRIBUTE(vram, lmem, u64, "%llu\n");
+
+static void pf_add_config_attrs(struct xe_tile *tile, struct dentry *dent, unsigned int vfid)
+{
+ struct xe_device *xe = tile->xe;
+
+ xe_tile_assert(tile, tile == extract_tile(dent));
+ xe_tile_assert(tile, vfid == extract_vfid(dent));
+
+ debugfs_create_file_unsafe(vfid ? "ggtt_quota" : "ggtt_spare",
+ 0644, dent, dent, &ggtt_fops);
+ if (IS_DGFX(xe))
+ debugfs_create_file_unsafe(vfid ? "vram_quota" : "vram_spare",
+ xe_device_has_lmtt(xe) ? 0644 : 0444,
+ dent, dent, &vram_fops);
+}
+
+static void pf_populate_tile(struct xe_tile *tile, struct dentry *dent, unsigned int vfid)
+{
+ struct xe_device *xe = tile->xe;
+ struct drm_minor *minor = xe->drm.primary;
+ struct xe_gt *gt;
+ unsigned int id;
+
+ pf_add_config_attrs(tile, dent, vfid);
+
+ if (!vfid) {
+ drm_debugfs_create_files(pf_ggtt_info,
+ ARRAY_SIZE(pf_ggtt_info),
+ dent, minor);
+ if (IS_DGFX(xe))
+ drm_debugfs_create_files(pf_vram_info,
+ ARRAY_SIZE(pf_vram_info),
+ dent, minor);
+ }
+
+ for_each_gt_on_tile(gt, tile, id)
+ xe_gt_sriov_pf_debugfs_populate(gt, dent, vfid);
+}
+
+/**
+ * xe_tile_sriov_pf_debugfs_populate() - Populate SR-IOV debugfs tree with tile files.
+ * @tile: the &xe_tile to register
+ * @parent: the parent &dentry that represents the SR-IOV @vfid function
+ * @vfid: the VF identifier
+ *
+ * Add to the @parent directory new debugfs directory that will represent a @tile and
+ * populate it with files that are related to the SR-IOV @vfid function.
+ *
+ * This function can only be called on PF.
+ */
+void xe_tile_sriov_pf_debugfs_populate(struct xe_tile *tile, struct dentry *parent,
+ unsigned int vfid)
+{
+ struct xe_device *xe = tile->xe;
+ struct dentry *dent;
+ char name[10]; /* should be enough up to "tile%u\0" for 2^16 - 1 */
+
+ xe_tile_assert(tile, IS_SRIOV_PF(xe));
+ xe_tile_assert(tile, extract_priv(parent->d_parent) == xe);
+ xe_tile_assert(tile, extract_priv(parent) == tile->xe ||
+ (uintptr_t)extract_priv(parent) == vfid);
+
+ /*
+ * /sys/kernel/debug/dri/BDF/
+ * ├── sriov
+ * │ ├── pf # parent, d_inode->i_private = (xe_device*)
+ * │ │ ├── tile0 # d_inode->i_private = (xe_tile*)
+ * │ │ ├── tile1
+ * │ │ : :
+ * │ ├── vf1 # parent, d_inode->i_private = VFID(1)
+ * │ │ ├── tile0 # d_inode->i_private = (xe_tile*)
+ * │ │ ├── tile1
+ * : : : :
+ */
+ snprintf(name, sizeof(name), "tile%u", tile->id);
+ dent = debugfs_create_dir(name, parent);
+ if (IS_ERR(dent))
+ return;
+ dent->d_inode->i_private = tile;
+
+ xe_tile_assert(tile, extract_tile(dent) == tile);
+ xe_tile_assert(tile, extract_vfid(dent) == vfid);
+ xe_tile_assert(tile, extract_xe(dent) == xe);
+
+ pf_populate_tile(tile, dent, vfid);
+}
generated by cgit (git 2.34.1) at 2025-12-05 15:28:44 +0000