1/* SPDX-License-Identifier: MIT */
2/*
3 * Copyright © 2019 Intel Corporation
4 */
5
6#ifndef __INTEL_GT_TYPES__
7#define __INTEL_GT_TYPES__
8
9#include <linux/ktime.h>
10#include <linux/list.h>
11#include <linux/llist.h>
12#include <linux/mutex.h>
13#include <linux/notifier.h>
14#include <linux/seqlock.h>
15#include <linux/spinlock.h>
16#include <linux/types.h>
17#include <linux/workqueue.h>
18
19#include "uc/intel_uc.h"
20#include "intel_gsc.h"
21
22#include "i915_vma.h"
23#include "i915_perf_types.h"
24#include "intel_engine_types.h"
25#include "intel_gt_buffer_pool_types.h"
26#include "intel_hwconfig.h"
27#include "intel_llc_types.h"
28#include "intel_reset_types.h"
29#include "intel_rc6_types.h"
30#include "intel_rps_types.h"
31#include "intel_migrate_types.h"
32#include "intel_wakeref.h"
33#include "intel_wopcm.h"
34
35struct drm_i915_private;
36struct i915_ggtt;
37struct intel_engine_cs;
38struct intel_uncore;
39
40struct intel_mmio_range {
41 u32 start;
42 u32 end;
43};
44
45/*
46 * The hardware has multiple kinds of multicast register ranges that need
47 * special register steering (and future platforms are expected to add
48 * additional types).
49 *
50 * During driver startup, we initialize the steering control register to
51 * direct reads to a slice/subslice that are valid for the 'subslice' class
52 * of multicast registers. If another type of steering does not have any
53 * overlap in valid steering targets with 'subslice' style registers, we will
54 * need to explicitly re-steer reads of registers of the other type.
55 *
56 * Only the replication types that may need additional non-default steering
57 * are listed here.
58 */
59enum intel_steering_type {
60 L3BANK,
61 MSLICE,
62 LNCF,
63 GAM,
64 DSS,
65 OADDRM,
66
67 /*
68 * On some platforms there are multiple types of MCR registers that
69 * will always return a non-terminated value at instance (0, 0). We'll
70 * lump those all into a single category to keep things simple.
71 */
72 INSTANCE0,
73
74 NUM_STEERING_TYPES
75};
76
77enum intel_submission_method {
78 INTEL_SUBMISSION_RING,
79 INTEL_SUBMISSION_ELSP,
80 INTEL_SUBMISSION_GUC,
81};
82
83struct gt_defaults {
84 u32 min_freq;
85 u32 max_freq;
86
87 u8 rps_up_threshold;
88 u8 rps_down_threshold;
89};
90
91enum intel_gt_type {
92 GT_PRIMARY,
93 GT_TILE,
94 GT_MEDIA,
95};
96
97struct intel_gt {
98 struct drm_i915_private *i915;
99 const char *name;
100 enum intel_gt_type type;
101
102 struct intel_uncore *uncore;
103 struct i915_ggtt *ggtt;
104
105 struct intel_uc uc;
106 struct intel_gsc gsc;
107 struct intel_wopcm wopcm;
108
109 struct {
110 /* Serialize global tlb invalidations */
111 struct mutex invalidate_lock;
112
113 /*
114 * Batch TLB invalidations
115 *
116 * After unbinding the PTE, we need to ensure the TLB
117 * are invalidated prior to releasing the physical pages.
118 * But we only need one such invalidation for all unbinds,
119 * so we track how many TLB invalidations have been
120 * performed since unbind the PTE and only emit an extra
121 * invalidate if no full barrier has been passed.
122 */
123 seqcount_mutex_t seqno;
124 } tlb;
125
126 struct i915_wa_list wa_list;
127
128 struct intel_gt_timelines {
129 spinlock_t lock; /* protects active_list */
130 struct list_head active_list;
131 } timelines;
132
133 struct intel_gt_requests {
134 /**
135 * We leave the user IRQ off as much as possible,
136 * but this means that requests will finish and never
137 * be retired once the system goes idle. Set a timer to
138 * fire periodically while the ring is running. When it
139 * fires, go retire requests.
140 */
141 struct delayed_work retire_work;
142 } requests;
143
144 struct {
145 struct llist_head list;
146 struct work_struct work;
147 } watchdog;
148
149 struct intel_wakeref wakeref;
150 atomic_t user_wakeref;
151
152 struct list_head closed_vma;
153 spinlock_t closed_lock; /* guards the list of closed_vma */
154
155 ktime_t last_init_time;
156 struct intel_reset reset;
157
158 /**
159 * Is the GPU currently considered idle, or busy executing
160 * userspace requests? Whilst idle, we allow runtime power
161 * management to power down the hardware and display clocks.
162 * In order to reduce the effect on performance, there
163 * is a slight delay before we do so.
164 */
165 intel_wakeref_t awake;
166
167 u32 clock_frequency;
168 u32 clock_period_ns;
169
170 struct intel_llc llc;
171 struct intel_rc6 rc6;
172 struct intel_rps rps;
173
174 spinlock_t *irq_lock;
175 u32 gt_imr;
176 u32 pm_ier;
177 u32 pm_imr;
178
179 u32 pm_guc_events;
180
181 struct {
182 bool active;
183
184 /**
185 * @lock: Lock protecting the below fields.
186 */
187 seqcount_mutex_t lock;
188
189 /**
190 * @total: Total time this engine was busy.
191 *
192 * Accumulated time not counting the most recent block in cases
193 * where engine is currently busy (active > 0).
194 */
195 ktime_t total;
196
197 /**
198 * @start: Timestamp of the last idle to active transition.
199 *
200 * Idle is defined as active == 0, active is active > 0.
201 */
202 ktime_t start;
203 } stats;
204
205 struct intel_engine_cs *engine[I915_NUM_ENGINES];
206 struct intel_engine_cs *engine_class[MAX_ENGINE_CLASS + 1]
207 [MAX_ENGINE_INSTANCE + 1];
208 enum intel_submission_method submission_method;
209
210 /*
211 * Default address space (either GGTT or ppGTT depending on arch).
212 *
213 * Reserved for exclusive use by the kernel.
214 */
215 struct i915_address_space *vm;
216
217 /*
218 * A pool of objects to use as shadow copies of client batch buffers
219 * when the command parser is enabled. Prevents the client from
220 * modifying the batch contents after software parsing.
221 *
222 * Buffers older than 1s are periodically reaped from the pool,
223 * or may be reclaimed by the shrinker before then.
224 */
225 struct intel_gt_buffer_pool buffer_pool;
226
227 struct i915_vma *scratch;
228
229 struct intel_migrate migrate;
230
231 const struct intel_mmio_range *steering_table[NUM_STEERING_TYPES];
232
233 struct {
234 u8 groupid;
235 u8 instanceid;
236 } default_steering;
237
238 /**
239 * @mcr_lock: Protects the MCR steering register
240 *
241 * Protects the MCR steering register (e.g., GEN8_MCR_SELECTOR).
242 * Should be taken before uncore->lock in cases where both are desired.
243 */
244 spinlock_t mcr_lock;
245
246 /*
247 * Base of per-tile GTTMMADR where we can derive the MMIO and the GGTT.
248 */
249 phys_addr_t phys_addr;
250
251 struct intel_gt_info {
252 unsigned int id;
253
254 intel_engine_mask_t engine_mask;
255
256 u32 l3bank_mask;
257
258 u8 num_engines;
259
260 /* General presence of SFC units */
261 u8 sfc_mask;
262
263 /* Media engine access to SFC per instance */
264 u8 vdbox_sfc_access;
265
266 /* Slice/subslice/EU info */
267 struct sseu_dev_info sseu;
268
269 unsigned long mslice_mask;
270
271 /** @hwconfig: hardware configuration data */
272 struct intel_hwconfig hwconfig;
273 } info;
274
275 struct {
276 u8 uc_index;
277 u8 wb_index; /* Only used on HAS_L3_CCS_READ() platforms */
278 } mocs;
279
280 /* gt/gtN sysfs */
281 struct kobject sysfs_gt;
282
283 /* sysfs defaults per gt */
284 struct gt_defaults defaults;
285 struct kobject *sysfs_defaults;
286
287 struct i915_perf_gt perf;
288
289 /** link: &ggtt.gt_list */
290 struct list_head ggtt_link;
291};
292
293struct intel_gt_definition {
294 enum intel_gt_type type;
295 char *name;
296 u32 mapping_base;
297 u32 gsi_offset;
298 intel_engine_mask_t engine_mask;
299};
300
301enum intel_gt_scratch_field {
302 /* 8 bytes */
303 INTEL_GT_SCRATCH_FIELD_DEFAULT = 0,
304
305 /* 8 bytes */
306 INTEL_GT_SCRATCH_FIELD_RENDER_FLUSH = 128,
307
308 /* 8 bytes */
309 INTEL_GT_SCRATCH_FIELD_COHERENTL3_WA = 256,
310};
311
312#define intel_gt_support_legacy_fencing(gt) ((gt)->ggtt->num_fences > 0)
313
314#endif /* __INTEL_GT_TYPES_H__ */
315

source code of linux/drivers/gpu/drm/i915/gt/intel_gt_types.h