drivers/gpu/arm/midgard/mali_kbase_trace_timeline.c

   1 /*
   2  *
   3  * (C) COPYRIGHT ARM Limited. All rights reserved.
   4  *
   5  * This program is free software and is provided to you under the terms of the
   6  * GNU General Public License version 2 as published by the Free Software
   7  * Foundation, and any use by you of this program is subject to the terms
   8  * of such GNU licence.
   9  *
  10  * A copy of the licence is included with the program, and can also be obtained
  11  * from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  12  * Boston, MA  02110-1301, USA.
  13  *
  14  */
  15
  16
  17
  18
  19
  20 #include <mali_kbase.h>
  21 #include <mali_kbase_jm.h>
  22
  23 #define CREATE_TRACE_POINTS
  24
  25 #ifdef CONFIG_MALI_TRACE_TIMELINE
  26 #include "mali_timeline.h"
  27
  28 #include <linux/debugfs.h>
  29 #include <linux/seq_file.h>
  30
  31 struct kbase_trace_timeline_desc
  32 {
  33         char *enum_str;
  34         char *desc;
  35         char *format;
  36         char *format_desc;
  37 };
  38
  39 struct kbase_trace_timeline_desc kbase_trace_timeline_desc_table[] =
  40 {
  41         #define KBASE_TIMELINE_TRACE_CODE(enum_val, desc, format, format_desc) { #enum_val, desc, format, format_desc }
  42         #include "mali_kbase_trace_timeline_defs.h"
  43         #undef KBASE_TIMELINE_TRACE_CODE
  44 };
  45
  46 #define KBASE_NR_TRACE_CODES ARRAY_SIZE(kbase_trace_timeline_desc_table)
  47
  48 STATIC void *kbasep_trace_timeline_seq_start(struct seq_file *s, loff_t *pos)
  49 {
  50         if (*pos >= KBASE_NR_TRACE_CODES)
  51                 return NULL;
  52
  53         return &kbase_trace_timeline_desc_table[*pos];
  54 }
  55
  56 STATIC void kbasep_trace_timeline_seq_stop(struct seq_file *s, void *data)
  57 {
  58 }
  59
  60 STATIC void *kbasep_trace_timeline_seq_next(struct seq_file *s, void *data, loff_t *pos)
  61 {
  62         (*pos)++;
  63
  64         if (*pos == KBASE_NR_TRACE_CODES)
  65                 return NULL;
  66
  67         return &kbase_trace_timeline_desc_table[*pos];
  68 }
  69
  70 STATIC int kbasep_trace_timeline_seq_show(struct seq_file *s, void *data)
  71 {
  72         struct kbase_trace_timeline_desc *trace_desc = data;
  73
  74         seq_printf(s, "%s#%s#%s#%s\n", trace_desc->enum_str, trace_desc->desc, trace_desc->format, trace_desc->format_desc);
  75         return 0;
  76 }
  77
  78
  79 static const struct seq_operations kbasep_trace_timeline_seq_ops = {
  80         .start = kbasep_trace_timeline_seq_start,
  81         .next = kbasep_trace_timeline_seq_next,
  82         .stop = kbasep_trace_timeline_seq_stop,
  83         .show = kbasep_trace_timeline_seq_show,
  84 };
  85
  86 STATIC int kbasep_trace_timeline_debugfs_open(struct inode *inode, struct file *file)
  87 {
  88         return seq_open(file, &kbasep_trace_timeline_seq_ops);
  89 }
  90
  91 static const struct file_operations kbasep_trace_timeline_debugfs_fops = {
  92         .open = kbasep_trace_timeline_debugfs_open,
  93         .read = seq_read,
  94         .llseek = seq_lseek,
  95         .release = seq_release_private,
  96 };
  97
  98 mali_error kbasep_trace_timeline_debugfs_init(kbase_device *kbdev)
  99 {
 100         kbdev->timeline.dentry = debugfs_create_file("mali_timeline_defs",
 101                         S_IRUGO, kbdev->mali_debugfs_directory, NULL,
 102                         &kbasep_trace_timeline_debugfs_fops);
 103         if (IS_ERR(kbdev->timeline.dentry))
 104                 return MALI_ERROR_FUNCTION_FAILED;
 105
 106         return MALI_ERROR_NONE;
 107 }
 108
 109 void kbasep_trace_timeline_debugfs_term(kbase_device *kbdev)
 110 {
 111         debugfs_remove(kbdev->timeline.dentry);
 112 }
 113
 114 void kbase_timeline_job_slot_submit(kbase_device *kbdev, kbase_context *kctx,
 115                                     kbase_jd_atom *katom, int js)
 116 {
 117         lockdep_assert_held(&kbdev->js_data.runpool_irq.lock);
 118
 119         if(kbdev->timeline.slot_atoms_submitted[js] > 0) {
 120                 KBASE_TIMELINE_JOB_START_NEXT(kctx, js, 1);
 121         } else {
 122                 base_atom_id atom_number = kbase_jd_atom_id(kctx, katom);
 123                 KBASE_TIMELINE_JOB_START_HEAD(kctx, js, 1);
 124                 KBASE_TIMELINE_JOB_START(kctx, js, atom_number);
 125         }
 126         ++kbdev->timeline.slot_atoms_submitted[js];
 127
 128         KBASE_TIMELINE_ATOMS_SUBMITTED(kctx, js, kbdev->timeline.slot_atoms_submitted[js]);
 129 }
 130
 131 void kbase_timeline_job_slot_done(kbase_device *kbdev, kbase_context *kctx,
 132                                   kbase_jd_atom *katom, int js,
 133                                   kbasep_js_atom_done_code done_code)
 134 {
 135         lockdep_assert_held(&kbdev->js_data.runpool_irq.lock);
 136
 137         if (done_code & KBASE_JS_ATOM_DONE_EVICTED_FROM_NEXT) {
 138                 KBASE_TIMELINE_JOB_START_NEXT(kctx, js, 0);
 139         } else {
 140                 /* Job finished in JSn_HEAD */
 141                 base_atom_id atom_number = kbase_jd_atom_id(kctx, katom);
 142                 KBASE_TIMELINE_JOB_START_HEAD(kctx, js, 0);
 143                 KBASE_TIMELINE_JOB_STOP(kctx, js, atom_number);
 144                 /* see if we need to trace the job in JSn_NEXT moving to JSn_HEAD */
 145                 if (kbdev->timeline.slot_atoms_submitted[js] > 1) {
 146                         /* Tag events with next_katom's kctx */
 147                         kbase_jm_slot *slot = &kbdev->jm_slots[js];
 148                         kbase_jd_atom *next_katom;
 149                         kbase_context *next_kctx;
 150                         KBASE_DEBUG_ASSERT(kbasep_jm_nr_jobs_submitted(slot) > 0);
 151
 152                         /* Peek the next atom - note that the atom in JSn_HEAD will already
 153                          * have been dequeued */
 154                         next_katom = kbasep_jm_peek_idx_submit_slot(slot, 0);
 155                         next_kctx = next_katom->kctx;
 156                         KBASE_TIMELINE_JOB_START_NEXT(next_kctx, js, 0);
 157                         KBASE_TIMELINE_JOB_START_HEAD(next_kctx, js, 1);
 158                         KBASE_TIMELINE_JOB_START(next_kctx, js, kbase_jd_atom_id(next_kctx, next_katom));
 159                 }
 160         }
 161
 162         --kbdev->timeline.slot_atoms_submitted[js];
 163
 164         KBASE_TIMELINE_ATOMS_SUBMITTED(kctx, js, kbdev->timeline.slot_atoms_submitted[js]);
 165 }
 166
 167 void kbase_timeline_pm_send_event(kbase_device *kbdev, kbase_timeline_pm_event event_sent)
 168 {
 169         int uid = 0;
 170         int old_uid;
 171
 172         /* If a producer already exists for the event, try to use their UID (multiple-producers) */
 173         uid = atomic_read(&kbdev->timeline.pm_event_uid[event_sent]);
 174         old_uid = uid;
 175
 176         /* Get a new non-zero UID if we don't have one yet */
 177         while (!uid)
 178                 uid = atomic_inc_return(&kbdev->timeline.pm_event_uid_counter);
 179
 180         /* Try to use this UID */
 181         if ( old_uid != atomic_cmpxchg(&kbdev->timeline.pm_event_uid[event_sent], old_uid, uid))
 182                 /* If it changed, raced with another producer: we've lost this UID */
 183                 uid = 0;
 184
 185         KBASE_TIMELINE_PM_SEND_EVENT(kbdev, event_sent, uid);
 186 }
 187
 188 void kbase_timeline_pm_check_handle_event(kbase_device *kbdev, kbase_timeline_pm_event event)
 189 {
 190         int uid = atomic_read(&kbdev->timeline.pm_event_uid[event]);
 191
 192         if (uid != 0) {
 193                 if (uid != atomic_cmpxchg(&kbdev->timeline.pm_event_uid[event], uid, 0))
 194                         /* If it changed, raced with another consumer: we've lost this UID */
 195                         uid = 0;
 196
 197                 KBASE_TIMELINE_PM_HANDLE_EVENT(kbdev, event, uid);
 198         }
 199 }
 200
 201 void kbase_timeline_pm_handle_event(kbase_device *kbdev, kbase_timeline_pm_event event)
 202 {
 203         int uid = atomic_read(&kbdev->timeline.pm_event_uid[event]);
 204
 205         if (uid != atomic_cmpxchg(&kbdev->timeline.pm_event_uid[event], uid, 0))
 206                 /* If it changed, raced with another consumer: we've lost this UID */
 207                 uid = 0;
 208
 209         KBASE_TIMELINE_PM_HANDLE_EVENT(kbdev, event, uid);
 210 }
 211
 212 void kbase_timeline_pm_l2_transition_start(kbase_device *kbdev)
 213 {
 214         lockdep_assert_held(&kbdev->pm.power_change_lock);
 215         /* Simply log the start of the transition */
 216         kbdev->timeline.l2_transitioning = MALI_TRUE;
 217         KBASE_TIMELINE_POWERING_L2(kbdev);
 218 }
 219
 220 void kbase_timeline_pm_l2_transition_done(kbase_device *kbdev)
 221 {
 222         lockdep_assert_held(&kbdev->pm.power_change_lock);
 223         /* Simply log the end of the transition */
 224         if( MALI_FALSE != kbdev->timeline.l2_transitioning )
 225         {
 226                 kbdev->timeline.l2_transitioning = MALI_FALSE;
 227                 KBASE_TIMELINE_POWERED_L2(kbdev);
 228         }
 229 }
 230
 231 #endif /* CONFIG_MALI_TRACE_TIMELINE */