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2024-01-04 1543e317f1da31b75942316931e8f491a8920811 
 kernel/drivers/gpu/arm/bifrost/csf/mali_kbase_csf_csg_debugfs.c
....@@ -1,7 +1,7 @@
11 // SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
22 /*
33  *
4
- * (C) COPYRIGHT 2019-2021 ARM Limited. All rights reserved.
4
+ * (C) COPYRIGHT 2019-2022 ARM Limited. All rights reserved.
55  *
66  * This program is free software and is provided to you under the terms of the
77  * GNU General Public License version 2 as published by the Free Software
....@@ -23,10 +23,157 @@
2323 #include <mali_kbase.h>
2424 #include <linux/seq_file.h>
2525 #include <linux/delay.h>
26
-#include <csf/mali_kbase_csf_trace_buffer.h>
26
+#include <backend/gpu/mali_kbase_pm_internal.h>
2727 
2828 #if IS_ENABLED(CONFIG_DEBUG_FS)
2929 #include "mali_kbase_csf_tl_reader.h"
30
+
31
+/* Wait time to be used cumulatively for all the CSG slots.
32
+ * Since scheduler lock is held when STATUS_UPDATE request is sent, there won't be
33
+ * any other Host request pending on the FW side and usually FW would be responsive
34
+ * to the Doorbell IRQs as it won't do any polling for a long time and also it won't
35
+ * have to wait for any HW state transition to complete for publishing the status.
36
+ * So it is reasonable to expect that handling of STATUS_UPDATE request would be
37
+ * relatively very quick.
38
+ */
39
+#define STATUS_UPDATE_WAIT_TIMEOUT 500
40
+
41
+/* The bitmask of CSG slots for which the STATUS_UPDATE request completed.
42
+ * The access to it is serialized with scheduler lock, so at a time it would
43
+ * get used either for "active_groups" or per context "groups" debugfs file.
44
+ */
45
+static DECLARE_BITMAP(csg_slots_status_updated, MAX_SUPPORTED_CSGS);
46
+
47
+static
48
+bool csg_slot_status_update_finish(struct kbase_device *kbdev, u32 csg_nr)
49
+{
50
+	struct kbase_csf_cmd_stream_group_info const *const ginfo =
51
+		&kbdev->csf.global_iface.groups[csg_nr];
52
+
53
+	return !((kbase_csf_firmware_csg_input_read(ginfo, CSG_REQ) ^
54
+		  kbase_csf_firmware_csg_output(ginfo, CSG_ACK)) &
55
+			     CSG_REQ_STATUS_UPDATE_MASK);
56
+}
57
+
58
+static
59
+bool csg_slots_status_update_finish(struct kbase_device *kbdev,
60
+		const unsigned long *slots_mask)
61
+{
62
+	const u32 max_csg_slots = kbdev->csf.global_iface.group_num;
63
+	bool changed = false;
64
+	u32 csg_nr;
65
+
66
+	lockdep_assert_held(&kbdev->csf.scheduler.lock);
67
+
68
+	for_each_set_bit(csg_nr, slots_mask, max_csg_slots) {
69
+		if (csg_slot_status_update_finish(kbdev, csg_nr)) {
70
+			set_bit(csg_nr, csg_slots_status_updated);
71
+			changed = true;
72
+		}
73
+	}
74
+
75
+	return changed;
76
+}
77
+
78
+static void wait_csg_slots_status_update_finish(struct kbase_device *kbdev,
79
+		unsigned long *slots_mask)
80
+{
81
+	const u32 max_csg_slots = kbdev->csf.global_iface.group_num;
82
+	long remaining = kbase_csf_timeout_in_jiffies(STATUS_UPDATE_WAIT_TIMEOUT);
83
+
84
+	lockdep_assert_held(&kbdev->csf.scheduler.lock);
85
+
86
+	bitmap_zero(csg_slots_status_updated, max_csg_slots);
87
+
88
+	while (!bitmap_empty(slots_mask, max_csg_slots) && remaining) {
89
+		remaining = wait_event_timeout(kbdev->csf.event_wait,
90
+				csg_slots_status_update_finish(kbdev, slots_mask),
91
+				remaining);
92
+		if (likely(remaining)) {
93
+			bitmap_andnot(slots_mask, slots_mask,
94
+				csg_slots_status_updated, max_csg_slots);
95
+		} else {
96
+			dev_warn(kbdev->dev,
97
+				 "STATUS_UPDATE request timed out for slots 0x%lx",
98
+				 slots_mask[0]);
99
+		}
100
+	}
101
+}
102
+
103
+void kbase_csf_debugfs_update_active_groups_status(struct kbase_device *kbdev)
104
+{
105
+	u32 max_csg_slots = kbdev->csf.global_iface.group_num;
106
+	DECLARE_BITMAP(used_csgs, MAX_SUPPORTED_CSGS) = { 0 };
107
+	u32 csg_nr;
108
+	unsigned long flags;
109
+
110
+	lockdep_assert_held(&kbdev->csf.scheduler.lock);
111
+
112
+	/* Global doorbell ring for CSG STATUS_UPDATE request or User doorbell
113
+	 * ring for Extract offset update, shall not be made when MCU has been
114
+	 * put to sleep otherwise it will undesirably make MCU exit the sleep
115
+	 * state. Also it isn't really needed as FW will implicitly update the
116
+	 * status of all on-slot groups when MCU sleep request is sent to it.
117
+	 */
118
+	if (kbdev->csf.scheduler.state == SCHED_SLEEPING) {
119
+		/* Wait for the MCU sleep request to complete. */
120
+		kbase_pm_wait_for_desired_state(kbdev);
121
+		bitmap_copy(csg_slots_status_updated,
122
+			    kbdev->csf.scheduler.csg_inuse_bitmap, max_csg_slots);
123
+		return;
124
+	}
125
+
126
+	for (csg_nr = 0; csg_nr < max_csg_slots; csg_nr++) {
127
+		struct kbase_queue_group *const group =
128
+			kbdev->csf.scheduler.csg_slots[csg_nr].resident_group;
129
+		if (!group)
130
+			continue;
131
+		/* Ring the User doorbell for FW to update the Extract offset */
132
+		kbase_csf_ring_doorbell(kbdev, group->doorbell_nr);
133
+		set_bit(csg_nr, used_csgs);
134
+	}
135
+
136
+	/* Return early if there are no on-slot groups */
137
+	if (bitmap_empty(used_csgs, max_csg_slots))
138
+		return;
139
+
140
+	kbase_csf_scheduler_spin_lock(kbdev, &flags);
141
+	for_each_set_bit(csg_nr, used_csgs, max_csg_slots) {
142
+		struct kbase_csf_cmd_stream_group_info const *const ginfo =
143
+			&kbdev->csf.global_iface.groups[csg_nr];
144
+		kbase_csf_firmware_csg_input_mask(ginfo, CSG_REQ,
145
+						  ~kbase_csf_firmware_csg_output(ginfo, CSG_ACK),
146
+						  CSG_REQ_STATUS_UPDATE_MASK);
147
+	}
148
+
149
+	BUILD_BUG_ON(MAX_SUPPORTED_CSGS > (sizeof(used_csgs[0]) * BITS_PER_BYTE));
150
+	kbase_csf_ring_csg_slots_doorbell(kbdev, used_csgs[0]);
151
+	kbase_csf_scheduler_spin_unlock(kbdev, flags);
152
+	wait_csg_slots_status_update_finish(kbdev, used_csgs);
153
+	/* Wait for the User doobell ring to take effect */
154
+	msleep(100);
155
+}
156
+
157
+#define MAX_SCHED_STATE_STRING_LEN (16)
158
+static const char *scheduler_state_to_string(struct kbase_device *kbdev,
159
+			enum kbase_csf_scheduler_state sched_state)
160
+{
161
+	switch (sched_state) {
162
+	case SCHED_BUSY:
163
+		return "BUSY";
164
+	case SCHED_INACTIVE:
165
+		return "INACTIVE";
166
+	case SCHED_SUSPENDED:
167
+		return "SUSPENDED";
168
+#ifdef KBASE_PM_RUNTIME
169
+	case SCHED_SLEEPING:
170
+		return "SLEEPING";
171
+#endif
172
+	default:
173
+		dev_warn(kbdev->dev, "Unknown Scheduler state %d", sched_state);
174
+		return NULL;
175
+	}
176
+}
30177 
31178 /**
32179  * blocked_reason_to_string() - Convert blocking reason id to a string
....@@ -55,16 +202,32 @@
55202 	return cs_blocked_reason[reason_id];
56203 }
57204 
205
+static bool sb_source_supported(u32 glb_version)
206
+{
207
+	bool supported = false;
208
+
209
+	if (((GLB_VERSION_MAJOR_GET(glb_version) == 3) &&
210
+	     (GLB_VERSION_MINOR_GET(glb_version) >= 5)) ||
211
+	    ((GLB_VERSION_MAJOR_GET(glb_version) == 2) &&
212
+	     (GLB_VERSION_MINOR_GET(glb_version) >= 6)) ||
213
+	    ((GLB_VERSION_MAJOR_GET(glb_version) == 1) &&
214
+	     (GLB_VERSION_MINOR_GET(glb_version) >= 3)))
215
+		supported = true;
216
+
217
+	return supported;
218
+}
219
+
58220 static void kbasep_csf_scheduler_dump_active_queue_cs_status_wait(
59
-	struct seq_file *file, u32 wait_status, u32 wait_sync_value,
60
-	u64 wait_sync_live_value, u64 wait_sync_pointer, u32 sb_status,
61
-	u32 blocked_reason)
221
+	struct seq_file *file, u32 glb_version, u32 wait_status, u32 wait_sync_value,
222
+	u64 wait_sync_live_value, u64 wait_sync_pointer, u32 sb_status, u32 blocked_reason)
62223 {
63224 #define WAITING "Waiting"
64225 #define NOT_WAITING "Not waiting"
65226 
66227 	seq_printf(file, "SB_MASK: %d\n",
67228 			CS_STATUS_WAIT_SB_MASK_GET(wait_status));
229
+	if (sb_source_supported(glb_version))
230
+		seq_printf(file, "SB_SOURCE: %d\n", CS_STATUS_WAIT_SB_SOURCE_GET(wait_status));
68231 	seq_printf(file, "PROGRESS_WAIT: %s\n",
69232 			CS_STATUS_WAIT_PROGRESS_WAIT_GET(wait_status) ?
70233 			WAITING : NOT_WAITING);
....@@ -134,17 +297,16 @@
134297 	struct kbase_vmap_struct *mapping;
135298 	u64 *evt;
136299 	u64 wait_sync_live_value;
300
+	u32 glb_version;
137301 
138302 	if (!queue)
139303 		return;
140304 
305
+	glb_version = queue->kctx->kbdev->csf.global_iface.version;
306
+
141307 	if (WARN_ON(queue->csi_index == KBASEP_IF_NR_INVALID ||
142308 		    !queue->group))
143309 		return;
144
-
145
-	/* Ring the doorbell to have firmware update CS_EXTRACT */
146
-	kbase_csf_ring_cs_user_doorbell(queue->kctx->kbdev, queue);
147
-	msleep(100);
148310 
149311 	addr = (u32 *)queue->user_io_addr;
150312 	cs_insert = addr[CS_INSERT_LO/4] | ((u64)addr[CS_INSERT_HI/4] << 32);
....@@ -154,16 +316,18 @@
154316 	cs_active = addr[CS_ACTIVE/4];
155317 
156318 #define KBASEP_CSF_DEBUGFS_CS_HEADER_USER_IO \
157
-	"Bind Idx,     Ringbuf addr, Prio,    Insert offset,   Extract offset, Active, Doorbell\n"
319
+	"Bind Idx,     Ringbuf addr,     Size, Prio,    Insert offset,   Extract offset, Active, Doorbell\n"
158320 
159
-	seq_printf(file, KBASEP_CSF_DEBUGFS_CS_HEADER_USER_IO "%8d, %16llx, %4u, %16llx, %16llx, %6u, %8d\n",
160
-			queue->csi_index, queue->base_addr, queue->priority,
161
-			cs_insert, cs_extract, cs_active, queue->doorbell_nr);
321
+	seq_printf(file, KBASEP_CSF_DEBUGFS_CS_HEADER_USER_IO "%8d, %16llx, %8x, %4u, %16llx, %16llx, %6u, %8d\n",
322
+			queue->csi_index, queue->base_addr,
323
+			queue->size,
324
+			queue->priority, cs_insert, cs_extract, cs_active, queue->doorbell_nr);
162325 
163326 	/* Print status information for blocked group waiting for sync object. For on-slot queues,
164327 	 * if cs_trace is enabled, dump the interface's cs_trace configuration.
165328 	 */
166329 	if (kbase_csf_scheduler_group_get_slot(queue->group) < 0) {
330
+		seq_printf(file, "SAVED_CMD_PTR: 0x%llx\n", queue->saved_cmd_ptr);
167331 		if (CS_STATUS_WAIT_SYNC_WAIT_GET(queue->status_wait)) {
168332 			wait_status = queue->status_wait;
169333 			wait_sync_value = queue->sync_value;
....@@ -180,9 +344,8 @@
180344 			}
181345 
182346 			kbasep_csf_scheduler_dump_active_queue_cs_status_wait(
183
-				file, wait_status, wait_sync_value,
184
-				wait_sync_live_value, wait_sync_pointer,
185
-				sb_status, blocked_reason);
347
+				file, glb_version, wait_status, wait_sync_value,
348
+				wait_sync_live_value, wait_sync_pointer, sb_status, blocked_reason);
186349 		}
187350 	} else {
188351 		struct kbase_device const *const kbdev =
....@@ -237,9 +400,8 @@
237400 		}
238401 
239402 		kbasep_csf_scheduler_dump_active_queue_cs_status_wait(
240
-			file, wait_status, wait_sync_value,
241
-			wait_sync_live_value, wait_sync_pointer, sb_status,
242
-			blocked_reason);
403
+			file, glb_version, wait_status, wait_sync_value, wait_sync_live_value,
404
+			wait_sync_pointer, sb_status, blocked_reason);
243405 		/* Dealing with cs_trace */
244406 		if (kbase_csf_scheduler_queue_has_trace(queue))
245407 			kbasep_csf_scheduler_dump_active_cs_trace(file, stream);
....@@ -250,35 +412,18 @@
250412 	seq_puts(file, "\n");
251413 }
252414 
253
-/* Waiting timeout for STATUS_UPDATE acknowledgment, in milliseconds */
254
-#define CSF_STATUS_UPDATE_TO_MS (100)
255
-
256415 static void kbasep_csf_scheduler_dump_active_group(struct seq_file *file,
257416 		struct kbase_queue_group *const group)
258417 {
259418 	if (kbase_csf_scheduler_group_get_slot(group) >= 0) {
260419 		struct kbase_device *const kbdev = group->kctx->kbdev;
261
-		unsigned long flags;
262420 		u32 ep_c, ep_r;
263421 		char exclusive;
422
+		char idle = 'N';
264423 		struct kbase_csf_cmd_stream_group_info const *const ginfo =
265424 			&kbdev->csf.global_iface.groups[group->csg_nr];
266
-		long remaining =
267
-			kbase_csf_timeout_in_jiffies(CSF_STATUS_UPDATE_TO_MS);
268425 		u8 slot_priority =
269426 			kbdev->csf.scheduler.csg_slots[group->csg_nr].priority;
270
-
271
-		kbase_csf_scheduler_spin_lock(kbdev, &flags);
272
-		kbase_csf_firmware_csg_input_mask(ginfo, CSG_REQ,
273
-				~kbase_csf_firmware_csg_output(ginfo, CSG_ACK),
274
-				CSG_REQ_STATUS_UPDATE_MASK);
275
-		kbase_csf_scheduler_spin_unlock(kbdev, flags);
276
-		kbase_csf_ring_csg_doorbell(kbdev, group->csg_nr);
277
-
278
-		remaining = wait_event_timeout(kbdev->csf.event_wait,
279
-			!((kbase_csf_firmware_csg_input_read(ginfo, CSG_REQ) ^
280
-			   kbase_csf_firmware_csg_output(ginfo, CSG_ACK)) &
281
-			   CSG_REQ_STATUS_UPDATE_MASK), remaining);
282427 
283428 		ep_c = kbase_csf_firmware_csg_output(ginfo,
284429 				CSG_STATUS_EP_CURRENT);
....@@ -291,18 +436,18 @@
291436 		else
292437 			exclusive = '0';
293438 
294
-		if (!remaining) {
295
-			dev_err(kbdev->dev,
296
-				"Timed out for STATUS_UPDATE on group %d on slot %d",
297
-				group->handle, group->csg_nr);
439
+		if (kbase_csf_firmware_csg_output(ginfo, CSG_STATUS_STATE) &
440
+				CSG_STATUS_STATE_IDLE_MASK)
441
+			idle = 'Y';
298442 
443
+		if (!test_bit(group->csg_nr, csg_slots_status_updated)) {
299444 			seq_printf(file, "*** Warn: Timed out for STATUS_UPDATE on slot %d\n",
300445 				group->csg_nr);
301
-			seq_printf(file, "*** The following group-record is likely stale\n");
446
+			seq_puts(file, "*** The following group-record is likely stale\n");
302447 		}
303448 
304
-		seq_puts(file, "GroupID, CSG NR, CSG Prio, Run State, Priority, C_EP(Alloc/Req), F_EP(Alloc/Req), T_EP(Alloc/Req), Exclusive\n");
305
-		seq_printf(file, "%7d, %6d, %8d, %9d, %8d, %11d/%3d, %11d/%3d, %11d/%3d, %9c\n",
449
+		seq_puts(file, "GroupID, CSG NR, CSG Prio, Run State, Priority, C_EP(Alloc/Req), F_EP(Alloc/Req), T_EP(Alloc/Req), Exclusive, Idle\n");
450
+		seq_printf(file, "%7d, %6d, %8d, %9d, %8d, %11d/%3d, %11d/%3d, %11d/%3d, %9c, %4c\n",
306451 			group->handle,
307452 			group->csg_nr,
308453 			slot_priority,
....@@ -314,7 +459,8 @@
314459 			CSG_STATUS_EP_REQ_FRAGMENT_EP_GET(ep_r),
315460 			CSG_STATUS_EP_CURRENT_TILER_EP_GET(ep_c),
316461 			CSG_STATUS_EP_REQ_TILER_EP_GET(ep_r),
317
-			exclusive);
462
+			exclusive,
463
+			idle);
318464 	} else {
319465 		seq_puts(file, "GroupID, CSG NR, Run State, Priority\n");
320466 		seq_printf(file, "%7d, %6d, %9d, %8d\n",
....@@ -352,16 +498,19 @@
352498 {
353499 	u32 gr;
354500 	struct kbase_context *const kctx = file->private;
355
-	struct kbase_device *const kbdev = kctx->kbdev;
501
+	struct kbase_device *kbdev;
356502 
357503 	if (WARN_ON(!kctx))
358504 		return -EINVAL;
505
+
506
+	kbdev = kctx->kbdev;
359507 
360508 	seq_printf(file, "MALI_CSF_CSG_DEBUGFS_VERSION: v%u\n",
361509 			MALI_CSF_CSG_DEBUGFS_VERSION);
362510 
363511 	mutex_lock(&kctx->csf.lock);
364512 	kbase_csf_scheduler_lock(kbdev);
513
+	kbase_csf_debugfs_update_active_groups_status(kbdev);
365514 	for (gr = 0; gr < MAX_QUEUE_GROUP_NUM; gr++) {
366515 		struct kbase_queue_group *const group =
367516 			kctx->csf.queue_groups[gr];
....@@ -395,6 +544,7 @@
395544 			MALI_CSF_CSG_DEBUGFS_VERSION);
396545 
397546 	kbase_csf_scheduler_lock(kbdev);
547
+	kbase_csf_debugfs_update_active_groups_status(kbdev);
398548 	for (csg_nr = 0; csg_nr < num_groups; csg_nr++) {
399549 		struct kbase_queue_group *const group =
400550 			kbdev->csf.scheduler.csg_slots[csg_nr].resident_group;
....@@ -436,11 +586,7 @@
436586 void kbase_csf_queue_group_debugfs_init(struct kbase_context *kctx)
437587 {
438588 	struct dentry *file;
439
-#if (KERNEL_VERSION(4, 7, 0) <= LINUX_VERSION_CODE)
440589 	const mode_t mode = 0444;
441
-#else
442
-	const mode_t mode = 0400;
443
-#endif
444590 
445591 	if (WARN_ON(!kctx || IS_ERR_OR_NULL(kctx->kctx_dentry)))
446592 		return;
....@@ -492,69 +638,100 @@
492638 	return 0;
493639 }
494640 
495
-DEFINE_SIMPLE_ATTRIBUTE(kbasep_csf_debugfs_scheduling_timer_enabled_fops,
496
-		&kbasep_csf_debugfs_scheduling_timer_enabled_get,
497
-		&kbasep_csf_debugfs_scheduling_timer_enabled_set,
498
-		"%llu\n");
499
-DEFINE_SIMPLE_ATTRIBUTE(kbasep_csf_debugfs_scheduling_timer_kick_fops,
500
-		NULL,
501
-		&kbasep_csf_debugfs_scheduling_timer_kick_set,
502
-		"%llu\n");
641
+DEFINE_DEBUGFS_ATTRIBUTE(kbasep_csf_debugfs_scheduling_timer_enabled_fops,
642
+			 &kbasep_csf_debugfs_scheduling_timer_enabled_get,
643
+			 &kbasep_csf_debugfs_scheduling_timer_enabled_set, "%llu\n");
644
+DEFINE_DEBUGFS_ATTRIBUTE(kbasep_csf_debugfs_scheduling_timer_kick_fops, NULL,
645
+			 &kbasep_csf_debugfs_scheduling_timer_kick_set, "%llu\n");
503646 
504647 /**
505
- * kbase_csf_debugfs_scheduler_suspend_get() - get if the scheduler is suspended.
648
+ * kbase_csf_debugfs_scheduler_state_get() - Get the state of scheduler.
506649  *
507
- * @data: The debugfs dentry private data, a pointer to kbase_device
508
- * @val: The debugfs output value, boolean: 1 suspended, 0 otherwise
650
+ * @file:     Object of the file that is being read.
651
+ * @user_buf: User buffer that contains the string.
652
+ * @count:    Length of user buffer
653
+ * @ppos:     Offset within file object
509654  *
510
- * Return: 0
655
+ * This function will return the current Scheduler state to Userspace
656
+ * Scheduler may exit that state by the time the state string is received
657
+ * by the Userspace.
658
+ *
659
+ * Return: 0 if Scheduler was found in an unexpected state, or the
660
+ *         size of the state string if it was copied successfully to the
661
+ *         User buffer or a negative value in case of an error.
511662  */
512
-static int kbase_csf_debugfs_scheduler_suspend_get(
513
-		void *data, u64 *val)
663
+static ssize_t kbase_csf_debugfs_scheduler_state_get(struct file *file,
664
+		    char __user *user_buf, size_t count, loff_t *ppos)
514665 {
515
-	struct kbase_device *kbdev = data;
666
+	struct kbase_device *kbdev = file->private_data;
516667 	struct kbase_csf_scheduler *scheduler = &kbdev->csf.scheduler;
668
+	const char *state_string;
517669 
518670 	kbase_csf_scheduler_lock(kbdev);
519
-	*val = (scheduler->state == SCHED_SUSPENDED);
671
+	state_string = scheduler_state_to_string(kbdev, scheduler->state);
520672 	kbase_csf_scheduler_unlock(kbdev);
521673 
522
-	return 0;
674
+	if (!state_string)
675
+		count = 0;
676
+
677
+	return simple_read_from_buffer(user_buf, count, ppos,
678
+				       state_string, strlen(state_string));
523679 }
524680 
525681 /**
526
- * kbase_csf_debugfs_scheduler_suspend_set() - set the scheduler to suspended.
682
+ * kbase_csf_debugfs_scheduler_state_set() - Set the state of scheduler.
527683  *
528
- * @data: The debugfs dentry private data, a pointer to kbase_device
529
- * @val: The debugfs input value, boolean: 1 suspend, 0 otherwise
684
+ * @file:  Object of the file that is being written to.
685
+ * @ubuf:  User buffer that contains the string.
686
+ * @count: Length of user buffer
687
+ * @ppos:  Offset within file object
530688  *
531
- * Return: Negative value if already in requested state, 0 otherwise.
689
+ * This function will update the Scheduler state as per the state string
690
+ * passed by the Userspace. Scheduler may or may not remain in new state
691
+ * for long.
692
+ *
693
+ * Return: Negative value if the string doesn't correspond to a valid Scheduler
694
+ *         state or if copy from user buffer failed, otherwise the length of
695
+ *         the User buffer.
532696  */
533
-static int kbase_csf_debugfs_scheduler_suspend_set(
534
-		void *data, u64 val)
697
+static ssize_t kbase_csf_debugfs_scheduler_state_set(struct file *file,
698
+		const char __user *ubuf, size_t count, loff_t *ppos)
535699 {
536
-	struct kbase_device *kbdev = data;
537
-	struct kbase_csf_scheduler *scheduler = &kbdev->csf.scheduler;
538
-	enum kbase_csf_scheduler_state state;
700
+	struct kbase_device *kbdev = file->private_data;
701
+	char buf[MAX_SCHED_STATE_STRING_LEN];
702
+	ssize_t ret = count;
539703 
540
-	kbase_csf_scheduler_lock(kbdev);
541
-	state = scheduler->state;
542
-	kbase_csf_scheduler_unlock(kbdev);
704
+	CSTD_UNUSED(ppos);
543705 
544
-	if (val && (state != SCHED_SUSPENDED))
706
+	count = min_t(size_t, sizeof(buf) - 1, count);
707
+	if (copy_from_user(buf, ubuf, count))
708
+		return -EFAULT;
709
+
710
+	buf[count] = 0;
711
+
712
+	if (sysfs_streq(buf, "SUSPENDED"))
545713 		kbase_csf_scheduler_pm_suspend(kbdev);
546
-	else if (!val && (state == SCHED_SUSPENDED))
547
-		kbase_csf_scheduler_pm_resume(kbdev);
548
-	else
549
-		return -1;
714
+#ifdef KBASE_PM_RUNTIME
715
+	else if (sysfs_streq(buf, "SLEEPING"))
716
+		kbase_csf_scheduler_force_sleep(kbdev);
717
+#endif
718
+	else if (sysfs_streq(buf, "INACTIVE"))
719
+		kbase_csf_scheduler_force_wakeup(kbdev);
720
+	else {
721
+		dev_dbg(kbdev->dev, "Bad scheduler state %s", buf);
722
+		ret = -EINVAL;
723
+	}
550724 
551
-	return 0;
725
+	return ret;
552726 }
553727 
554
-DEFINE_SIMPLE_ATTRIBUTE(kbasep_csf_debugfs_scheduler_suspend_fops,
555
-		&kbase_csf_debugfs_scheduler_suspend_get,
556
-		&kbase_csf_debugfs_scheduler_suspend_set,
557
-		"%llu\n");
728
+static const struct file_operations kbasep_csf_debugfs_scheduler_state_fops = {
729
+	.owner = THIS_MODULE,
730
+	.read = kbase_csf_debugfs_scheduler_state_get,
731
+	.write = kbase_csf_debugfs_scheduler_state_set,
732
+	.open = simple_open,
733
+	.llseek = default_llseek,
734
+};
558735 
559736 void kbase_csf_debugfs_init(struct kbase_device *kbdev)
560737 {
....@@ -568,12 +745,11 @@
568745 	debugfs_create_file("scheduling_timer_kick", 0200,
569746 			kbdev->mali_debugfs_directory, kbdev,
570747 			&kbasep_csf_debugfs_scheduling_timer_kick_fops);
571
-	debugfs_create_file("scheduler_suspend", 0644,
748
+	debugfs_create_file("scheduler_state", 0644,
572749 			kbdev->mali_debugfs_directory, kbdev,
573
-			&kbasep_csf_debugfs_scheduler_suspend_fops);
750
+			&kbasep_csf_debugfs_scheduler_state_fops);
574751 
575752 	kbase_csf_tl_reader_debugfs_init(kbdev);
576
-	kbase_csf_firmware_trace_buffer_debugfs_init(kbdev);
577753 }
578754 
579755 #else