tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/* SPDX-License-Identifier: MIT */
2/*
3 * Copyright © 2022 Intel Corporation
4 */
5
6#ifndef _XE_GT_H_
7#define _XE_GT_H_
8
9#include <linux/fault-inject.h>
10
11#include <drm/drm_util.h>
12
13#include "xe_device.h"
14#include "xe_device_types.h"
15#include "xe_gt_sriov_vf.h"
16#include "xe_hw_engine.h"
17
18#define for_each_hw_engine(hwe__, gt__, id__) \
19 for ((id__) = 0; (id__) < ARRAY_SIZE((gt__)->hw_engines); (id__)++) \
20 for_each_if(((hwe__) = (gt__)->hw_engines + (id__)) && \
21 xe_hw_engine_is_valid((hwe__)))
22
23#define CCS_MASK(gt) (((gt)->info.engine_mask & XE_HW_ENGINE_CCS_MASK) >> XE_HW_ENGINE_CCS0)
24
25#define GT_VER(gt) ({ \
26 typeof(gt) gt_ = (gt); \
27 struct xe_device *xe = gt_to_xe(gt_); \
28 xe_gt_is_media_type(gt_) ? MEDIA_VER(xe) : GRAPHICS_VER(xe); \
29})
30
31extern struct fault_attr gt_reset_failure;
32static inline bool xe_fault_inject_gt_reset(void)
33{
34 return IS_ENABLED(CONFIG_DEBUG_FS) && should_fail(>_reset_failure, 1);
35}
36
37struct xe_gt *xe_gt_alloc(struct xe_tile *tile);
38int xe_gt_init_early(struct xe_gt *gt);
39int xe_gt_init(struct xe_gt *gt);
40void xe_gt_mmio_init(struct xe_gt *gt);
41void xe_gt_declare_wedged(struct xe_gt *gt);
42int xe_gt_record_default_lrcs(struct xe_gt *gt);
43
44/**
45 * xe_gt_record_user_engines - save data related to engines available to
46 * userspace
47 * @gt: GT structure
48 *
49 * Walk the available HW engines from gt->info.engine_mask and calculate data
50 * related to those engines that may be used by userspace. To be used whenever
51 * available engines change in runtime (e.g. with ccs_mode) or during
52 * initialization
53 */
54void xe_gt_record_user_engines(struct xe_gt *gt);
55
56void xe_gt_suspend_prepare(struct xe_gt *gt);
57int xe_gt_suspend(struct xe_gt *gt);
58void xe_gt_shutdown(struct xe_gt *gt);
59int xe_gt_resume(struct xe_gt *gt);
60void xe_gt_reset_async(struct xe_gt *gt);
61void xe_gt_sanitize(struct xe_gt *gt);
62int xe_gt_sanitize_freq(struct xe_gt *gt);
63
64/**
65 * xe_gt_wait_for_reset - wait for gt's async reset to finalize.
66 * @gt: GT structure
67 * Return:
68 * %true if it waited for the work to finish execution,
69 * %false if there was no scheduled reset or it was done.
70 */
71static inline bool xe_gt_wait_for_reset(struct xe_gt *gt)
72{
73 return flush_work(>->reset.worker);
74}
75
76/**
77 * xe_gt_reset - perform synchronous reset
78 * @gt: GT structure
79 * Return:
80 * %true if it waited for the reset to finish,
81 * %false if there was no scheduled reset.
82 */
83static inline bool xe_gt_reset(struct xe_gt *gt)
84{
85 xe_gt_reset_async(gt);
86 return xe_gt_wait_for_reset(gt);
87}
88
89/**
90 * xe_gt_any_hw_engine_by_reset_domain - scan the list of engines and return the
91 * first that matches the same reset domain as @class
92 * @gt: GT structure
93 * @class: hw engine class to lookup
94 */
95struct xe_hw_engine *
96xe_gt_any_hw_engine_by_reset_domain(struct xe_gt *gt, enum xe_engine_class class);
97
98/**
99 * xe_gt_any_hw_engine - scan the list of engines and return the
100 * first available
101 * @gt: GT structure
102 */
103struct xe_hw_engine *xe_gt_any_hw_engine(struct xe_gt *gt);
104
105struct xe_hw_engine *xe_gt_hw_engine(struct xe_gt *gt,
106 enum xe_engine_class class,
107 u16 instance,
108 bool logical);
109
110static inline bool xe_gt_has_indirect_ring_state(struct xe_gt *gt)
111{
112 return gt->info.has_indirect_ring_state &&
113 xe_device_uc_enabled(gt_to_xe(gt));
114}
115
116static inline bool xe_gt_is_main_type(struct xe_gt *gt)
117{
118 return gt->info.type == XE_GT_TYPE_MAIN;
119}
120
121static inline bool xe_gt_is_media_type(struct xe_gt *gt)
122{
123 return gt->info.type == XE_GT_TYPE_MEDIA;
124}
125
126static inline bool xe_gt_is_usm_hwe(struct xe_gt *gt, struct xe_hw_engine *hwe)
127{
128 struct xe_device *xe = gt_to_xe(gt);
129
130 return xe->info.has_usm && hwe->class == XE_ENGINE_CLASS_COPY &&
131 hwe->instance == gt->usm.reserved_bcs_instance;
132}
133
134/**
135 * xe_gt_recovery_pending() - GT recovery pending
136 * @gt: the &xe_gt
137 *
138 * Return: True if GT recovery in pending, False otherwise
139 */
140static inline bool xe_gt_recovery_pending(struct xe_gt *gt)
141{
142 return IS_SRIOV_VF(gt_to_xe(gt)) &&
143 xe_gt_sriov_vf_recovery_pending(gt);
144}
145
146#endif