Commit 63d8cb8f authored by Michal Wajdeczko's avatar Michal Wajdeczko
Browse files

drm/xe/vf: Expose SR-IOV VF attributes to GT debugfs 



For debug purposes we might want to view actual VF configuration
(including GGTT range, LMEM size, number of GuC contexts IDs or
doorbells) and the negotiated ABI versions (with GuC and PF).

Reviewed-by: default avatarPiotr Piórkowski <piotr.piorkowski@intel.com>
Signed-off-by: default avatarMichal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240516110546.2216-7-michal.wajdeczko@intel.com
parent 25275c8a

drivers/gpu/drm/xe/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -156,6 +156,7 @@ xe-$(CONFIG_HWMON) += xe_hwmon.o 
# graphics virtualization (SR-IOV) support

xe-y += \

	xe_gt_sriov_vf.o \

	xe_gt_sriov_vf_debugfs.o \

	xe_guc_relay.o \

	xe_memirq.o \

	xe_sriov.o

drivers/gpu/drm/xe/xe_gt_debugfs.c

+3 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 
#include "xe_gt.h"

#include "xe_gt_mcr.h"

#include "xe_gt_sriov_pf_debugfs.h"

#include "xe_gt_sriov_vf_debugfs.h"

#include "xe_gt_topology.h"

#include "xe_hw_engine.h"

#include "xe_lrc.h"
@@ -306,4 +307,6 @@ void xe_gt_debugfs_register(struct xe_gt *gt) 


	if (IS_SRIOV_PF(xe))

		xe_gt_sriov_pf_debugfs_register(gt, root);

	else if (IS_SRIOV_VF(xe))

		xe_gt_sriov_vf_debugfs_register(gt, root);

}

drivers/gpu/drm/xe/xe_gt_sriov_vf_debugfs.c

0 → 100644
+72 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: MIT

/*

 * Copyright © 2023-2024 Intel Corporation

 */



#include <linux/debugfs.h>



#include <drm/drm_debugfs.h>



#include "xe_gt_debugfs.h"

#include "xe_gt_sriov_vf.h"

#include "xe_gt_sriov_vf_debugfs.h"

#include "xe_gt_types.h"

#include "xe_sriov.h"



/*

 *      /sys/kernel/debug/dri/0/

 *      ├── gt0

 *      │   ├── vf

 *      │   │   ├── self_config

 *      │   │   ├── abi_versions

 *      │   │   ├── runtime_regs

 */



static const struct drm_info_list vf_info[] = {

	{

		"self_config",

		.show = xe_gt_debugfs_simple_show,

		.data = xe_gt_sriov_vf_print_config,

	},

	{

		"abi_versions",

		.show = xe_gt_debugfs_simple_show,

		.data = xe_gt_sriov_vf_print_version,

	},

#if defined(CONFIG_DRM_XE_DEBUG) || defined(CONFIG_DRM_XE_DEBUG_SRIOV)

	{

		"runtime_regs",

		.show = xe_gt_debugfs_simple_show,

		.data = xe_gt_sriov_vf_print_runtime,

	},

#endif

};



/**

 * xe_gt_sriov_vf_debugfs_register - Register SR-IOV VF specific entries in GT debugfs.

 * @gt: the &xe_gt to register

 * @root: the &dentry that represents the GT directory

 *

 * Register SR-IOV VF entries that are GT related and must be shown under GT debugfs.

 */

void xe_gt_sriov_vf_debugfs_register(struct xe_gt *gt, struct dentry *root)

{

	struct xe_device *xe = gt_to_xe(gt);

	struct drm_minor *minor = xe->drm.primary;

	struct dentry *vfdentry;



	xe_assert(xe, IS_SRIOV_VF(xe));

	xe_assert(xe, root->d_inode->i_private == gt);



	/*

	 *      /sys/kernel/debug/dri/0/

	 *      ├── gt0

	 *      │   ├── vf

	 */

	vfdentry = debugfs_create_dir("vf", root);

	if (IS_ERR(vfdentry))

		return;

	vfdentry->d_inode->i_private = gt;



	drm_debugfs_create_files(vf_info, ARRAY_SIZE(vf_info), vfdentry, minor);

}

drivers/gpu/drm/xe/xe_gt_sriov_vf_debugfs.h

0 → 100644
+14 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: MIT */

/*

 * Copyright © 2023-2024 Intel Corporation

 */



#ifndef _XE_GT_SRIOV_VF_DEBUGFS_H_

#define _XE_GT_SRIOV_VF_DEBUGFS_H_



struct xe_gt;

struct dentry;



void xe_gt_sriov_vf_debugfs_register(struct xe_gt *gt, struct dentry *root);



#endif