1 files changed, 440 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_debugfs.c b/drivers/gpu/drm/xe/xe_debugfs.c
new file mode 100644
index 000000000000..e91da9589c5f
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_debugfs.c
@@ -0,0 +1,440 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#include "xe_debugfs.h"
+
+#include <linux/debugfs.h>
+#include <linux/fault-inject.h>
+#include <linux/string_helpers.h>
+
+#include <drm/drm_debugfs.h>
+
+#include "regs/xe_pmt.h"
+#include "xe_bo.h"
+#include "xe_device.h"
+#include "xe_force_wake.h"
+#include "xe_gt_debugfs.h"
+#include "xe_gt_printk.h"
+#include "xe_guc_ads.h"
+#include "xe_mmio.h"
+#include "xe_pm.h"
+#include "xe_psmi.h"
+#include "xe_pxp_debugfs.h"
+#include "xe_sriov.h"
+#include "xe_sriov_pf_debugfs.h"
+#include "xe_sriov_vf.h"
+#include "xe_step.h"
+#include "xe_tile_debugfs.h"
+#include "xe_vsec.h"
+#include "xe_wa.h"
+
+#ifdef CONFIG_DRM_XE_DEBUG
+#include "xe_bo_evict.h"
+#include "xe_migrate.h"
+#include "xe_vm.h"
+#endif
+
+DECLARE_FAULT_ATTR(gt_reset_failure);
+DECLARE_FAULT_ATTR(inject_csc_hw_error);
+
+static void read_residency_counter(struct xe_device *xe, struct xe_mmio *mmio,
+				   u32 offset, const char *name, struct drm_printer *p)
+{
+	u64 residency = 0;
+	int ret;
+
+	ret = xe_pmt_telem_read(to_pci_dev(xe->drm.dev),
+				xe_mmio_read32(mmio, PUNIT_TELEMETRY_GUID),
+				&residency, offset, sizeof(residency));
+	if (ret != sizeof(residency)) {
+		drm_warn(&xe->drm, "%s counter failed to read, ret %d\n", name, ret);
+		return;
+	}
+
+	drm_printf(p, "%s : %llu\n", name, residency);
+}
+
+static struct xe_device *node_to_xe(struct drm_info_node *node)
+{
+	return to_xe_device(node->minor->dev);
+}
+
+static int 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_gt *gt;
+	u8 id;
+
+	xe_pm_runtime_get(xe);
+
+	drm_printf(&p, "graphics_verx100 %d\n", xe->info.graphics_verx100);
+	drm_printf(&p, "media_verx100 %d\n", xe->info.media_verx100);
+	drm_printf(&p, "stepping G:%s M:%s B:%s\n",
+		   xe_step_name(xe->info.step.graphics),
+		   xe_step_name(xe->info.step.media),
+		   xe_step_name(xe->info.step.basedie));
+	drm_printf(&p, "is_dgfx %s\n", str_yes_no(xe->info.is_dgfx));
+	drm_printf(&p, "platform %d\n", xe->info.platform);
+	drm_printf(&p, "subplatform %d\n",
+		   xe->info.subplatform > XE_SUBPLATFORM_NONE ? xe->info.subplatform : 0);
+	drm_printf(&p, "devid 0x%x\n", xe->info.devid);
+	drm_printf(&p, "revid %d\n", xe->info.revid);
+	drm_printf(&p, "tile_count %d\n", xe->info.tile_count);
+	drm_printf(&p, "vm_max_level %d\n", xe->info.vm_max_level);
+	drm_printf(&p, "force_execlist %s\n", str_yes_no(xe->info.force_execlist));
+	drm_printf(&p, "has_flat_ccs %s\n", str_yes_no(xe->info.has_flat_ccs));
+	drm_printf(&p, "has_usm %s\n", str_yes_no(xe->info.has_usm));
+	drm_printf(&p, "skip_guc_pc %s\n", str_yes_no(xe->info.skip_guc_pc));
+	for_each_gt(gt, xe, id) {
+		drm_printf(&p, "gt%d force wake %d\n", id,
+			   xe_force_wake_ref(gt_to_fw(gt), XE_FW_GT));
+		drm_printf(&p, "gt%d engine_mask 0x%llx\n", id,
+			   gt->info.engine_mask);
+	}
+
+	xe_pm_runtime_put(xe);
+	return 0;
+}
+
+static int sriov_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);
+
+	xe_sriov_print_info(xe, &p);
+	return 0;
+}
+
+static int workarounds(struct xe_device *xe, struct drm_printer *p)
+{
+	xe_pm_runtime_get(xe);
+	xe_wa_device_dump(xe, p);
+	xe_pm_runtime_put(xe);
+
+	return 0;
+}
+
+static int workaround_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);
+
+	workarounds(xe, &p);
+	return 0;
+}
+
+static int dgfx_pkg_residencies_show(struct seq_file *m, void *data)
+{
+	struct xe_device *xe;
+	struct xe_mmio *mmio;
+	struct drm_printer p;
+
+	xe = node_to_xe(m->private);
+	p = drm_seq_file_printer(m);
+	xe_pm_runtime_get(xe);
+	mmio = xe_root_tile_mmio(xe);
+	static const struct {
+		u32 offset;
+		const char *name;
+	} residencies[] = {
+		{BMG_G2_RESIDENCY_OFFSET, "Package G2"},
+		{BMG_G6_RESIDENCY_OFFSET, "Package G6"},
+		{BMG_G7_RESIDENCY_OFFSET, "Package G7"},
+		{BMG_G8_RESIDENCY_OFFSET, "Package G8"},
+		{BMG_G10_RESIDENCY_OFFSET, "Package G10"},
+		{BMG_MODS_RESIDENCY_OFFSET, "Package ModS"}
+	};
+
+	for (int i = 0; i < ARRAY_SIZE(residencies); i++)
+		read_residency_counter(xe, mmio, residencies[i].offset, residencies[i].name, &p);
+
+	xe_pm_runtime_put(xe);
+	return 0;
+}
+
+static int dgfx_pcie_link_residencies_show(struct seq_file *m, void *data)
+{
+	struct xe_device *xe;
+	struct xe_mmio *mmio;
+	struct drm_printer p;
+
+	xe = node_to_xe(m->private);
+	p = drm_seq_file_printer(m);
+	xe_pm_runtime_get(xe);
+	mmio = xe_root_tile_mmio(xe);
+
+	static const struct {
+		u32 offset;
+		const char *name;
+	} residencies[] = {
+		{BMG_PCIE_LINK_L0_RESIDENCY_OFFSET, "PCIE LINK L0 RESIDENCY"},
+		{BMG_PCIE_LINK_L1_RESIDENCY_OFFSET, "PCIE LINK L1 RESIDENCY"},
+		{BMG_PCIE_LINK_L1_2_RESIDENCY_OFFSET, "PCIE LINK L1.2 RESIDENCY"}
+	};
+
+	for (int i = 0; i < ARRAY_SIZE(residencies); i++)
+		read_residency_counter(xe, mmio, residencies[i].offset, residencies[i].name, &p);
+
+	xe_pm_runtime_put(xe);
+	return 0;
+}
+
+static const struct drm_info_list debugfs_list[] = {
+	{"info", info, 0},
+	{ .name = "sriov_info", .show = sriov_info, },
+	{ .name = "workarounds", .show = workaround_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, },
+};
+
+static int forcewake_open(struct inode *inode, struct file *file)
+{
+	struct xe_device *xe = inode->i_private;
+	struct xe_gt *gt;
+	u8 id, last_gt;
+	unsigned int fw_ref;
+
+	xe_pm_runtime_get(xe);
+	for_each_gt(gt, xe, id) {
+		last_gt = id;
+
+		fw_ref = xe_force_wake_get(gt_to_fw(gt), XE_FORCEWAKE_ALL);
+		if (!xe_force_wake_ref_has_domain(fw_ref, XE_FORCEWAKE_ALL))
+			goto err_fw_get;
+	}
+
+	return 0;
+
+err_fw_get:
+	for_each_gt(gt, xe, id) {
+		if (id < last_gt)
+			xe_force_wake_put(gt_to_fw(gt), XE_FORCEWAKE_ALL);
+		else if (id == last_gt)
+			xe_force_wake_put(gt_to_fw(gt), fw_ref);
+		else
+			break;
+	}
+
+	xe_pm_runtime_put(xe);
+	return -ETIMEDOUT;
+}
+
+static int forcewake_release(struct inode *inode, struct file *file)
+{
+	struct xe_device *xe = inode->i_private;
+	struct xe_gt *gt;
+	u8 id;
+
+	for_each_gt(gt, xe, id)
+		xe_force_wake_put(gt_to_fw(gt), XE_FORCEWAKE_ALL);
+	xe_pm_runtime_put(xe);
+
+	return 0;
+}
+
+static const struct file_operations forcewake_all_fops = {
+	.owner = THIS_MODULE,
+	.open = forcewake_open,
+	.release = forcewake_release,
+};
+
+static ssize_t wedged_mode_show(struct file *f, char __user *ubuf,
+				size_t size, loff_t *pos)
+{
+	struct xe_device *xe = file_inode(f)->i_private;
+	char buf[32];
+	int len = 0;
+
+	len = scnprintf(buf, sizeof(buf), "%d\n", xe->wedged.mode);
+
+	return simple_read_from_buffer(ubuf, size, pos, buf, len);
+}
+
+static ssize_t wedged_mode_set(struct file *f, const char __user *ubuf,
+			       size_t size, loff_t *pos)
+{
+	struct xe_device *xe = file_inode(f)->i_private;
+	struct xe_gt *gt;
+	u32 wedged_mode;
+	ssize_t ret;
+	u8 id;
+
+	ret = kstrtouint_from_user(ubuf, size, 0, &wedged_mode);
+	if (ret)
+		return ret;
+
+	if (wedged_mode > 2)
+		return -EINVAL;
+
+	if (xe->wedged.mode == wedged_mode)
+		return size;
+
+	xe->wedged.mode = wedged_mode;
+
+	xe_pm_runtime_get(xe);
+	for_each_gt(gt, xe, id) {
+		ret = xe_guc_ads_scheduler_policy_toggle_reset(&gt->uc.guc.ads);
+		if (ret) {
+			xe_gt_err(gt, "Failed to update GuC ADS scheduler policy. GuC may still cause engine reset even with wedged_mode=2\n");
+			xe_pm_runtime_put(xe);
+			return -EIO;
+		}
+	}
+	xe_pm_runtime_put(xe);
+
+	return size;
+}
+
+static const struct file_operations wedged_mode_fops = {
+	.owner = THIS_MODULE,
+	.read = wedged_mode_show,
+	.write = wedged_mode_set,
+};
+
+static ssize_t atomic_svm_timeslice_ms_show(struct file *f, char __user *ubuf,
+					    size_t size, loff_t *pos)
+{
+	struct xe_device *xe = file_inode(f)->i_private;
+	char buf[32];
+	int len = 0;
+
+	len = scnprintf(buf, sizeof(buf), "%d\n", xe->atomic_svm_timeslice_ms);
+
+	return simple_read_from_buffer(ubuf, size, pos, buf, len);
+}
+
+static ssize_t atomic_svm_timeslice_ms_set(struct file *f,
+					   const char __user *ubuf,
+					   size_t size, loff_t *pos)
+{
+	struct xe_device *xe = file_inode(f)->i_private;
+	u32 atomic_svm_timeslice_ms;
+	ssize_t ret;
+
+	ret = kstrtouint_from_user(ubuf, size, 0, &atomic_svm_timeslice_ms);
+	if (ret)
+		return ret;
+
+	xe->atomic_svm_timeslice_ms = atomic_svm_timeslice_ms;
+
+	return size;
+}
+
+static const struct file_operations atomic_svm_timeslice_ms_fops = {
+	.owner = THIS_MODULE,
+	.read = atomic_svm_timeslice_ms_show,
+	.write = atomic_svm_timeslice_ms_set,
+};
+
+static ssize_t disable_late_binding_show(struct file *f, char __user *ubuf,
+					 size_t size, loff_t *pos)
+{
+	struct xe_device *xe = file_inode(f)->i_private;
+	struct xe_late_bind *late_bind = &xe->late_bind;
+	char buf[32];
+	int len;
+
+	len = scnprintf(buf, sizeof(buf), "%d\n", late_bind->disable);
+
+	return simple_read_from_buffer(ubuf, size, pos, buf, len);
+}
+
+static ssize_t disable_late_binding_set(struct file *f, const char __user *ubuf,
+					size_t size, loff_t *pos)
+{
+	struct xe_device *xe = file_inode(f)->i_private;
+	struct xe_late_bind *late_bind = &xe->late_bind;
+	bool val;
+	int ret;
+
+	ret = kstrtobool_from_user(ubuf, size, &val);
+	if (ret)
+		return ret;
+
+	late_bind->disable = val;
+	return size;
+}
+
+static const struct file_operations disable_late_binding_fops = {
+	.owner = THIS_MODULE,
+	.read = disable_late_binding_show,
+	.write = disable_late_binding_set,
+};
+
+void xe_debugfs_register(struct xe_device *xe)
+{
+	struct ttm_device *bdev = &xe->ttm;
+	struct drm_minor *minor = xe->drm.primary;
+	struct dentry *root = minor->debugfs_root;
+	struct ttm_resource_manager *man;
+	struct xe_tile *tile;
+	struct xe_gt *gt;
+	u32 mem_type;
+	u8 tile_id;
+	u8 id;
+
+	drm_debugfs_create_files(debugfs_list,
+				 ARRAY_SIZE(debugfs_list),
+				 root, minor);
+
+	if (xe->info.platform == XE_BATTLEMAGE && !IS_SRIOV_VF(xe)) {
+		drm_debugfs_create_files(debugfs_residencies,
+					 ARRAY_SIZE(debugfs_residencies),
+					 root, minor);
+		fault_create_debugfs_attr("inject_csc_hw_error", root,
+					  &inject_csc_hw_error);
+	}
+
+	debugfs_create_file("forcewake_all", 0400, root, xe,
+			    &forcewake_all_fops);
+
+	debugfs_create_file("wedged_mode", 0600, root, xe,
+			    &wedged_mode_fops);
+
+	debugfs_create_file("atomic_svm_timeslice_ms", 0600, root, xe,
+			    &atomic_svm_timeslice_ms_fops);
+
+	debugfs_create_file("disable_late_binding", 0600, root, xe,
+			    &disable_late_binding_fops);
+
+	for (mem_type = XE_PL_VRAM0; mem_type <= XE_PL_VRAM1; ++mem_type) {
+		man = ttm_manager_type(bdev, mem_type);
+
+		if (man) {
+			char name[16];
+
+			snprintf(name, sizeof(name), "vram%d_mm", mem_type - XE_PL_VRAM0);
+			ttm_resource_manager_create_debugfs(man, root, name);
+		}
+	}
+
+	man = ttm_manager_type(bdev, XE_PL_TT);
+	ttm_resource_manager_create_debugfs(man, root, "gtt_mm");
+
+	man = ttm_manager_type(bdev, XE_PL_STOLEN);
+	if (man)
+		ttm_resource_manager_create_debugfs(man, root, "stolen_mm");
+
+	for_each_tile(tile, xe, tile_id)
+		xe_tile_debugfs_register(tile);
+
+	for_each_gt(gt, xe, id)
+		xe_gt_debugfs_register(gt);
+
+	xe_pxp_debugfs_register(xe->pxp);
+
+	xe_psmi_debugfs_register(xe);
+
+	fault_create_debugfs_attr("fail_gt_reset", root, &gt_reset_failure);
+
+	if (IS_SRIOV_PF(xe))
+		xe_sriov_pf_debugfs_register(xe, root);
+	else if (IS_SRIOV_VF(xe))
+		xe_sriov_vf_debugfs_register(xe, root);
+}