osfmk/kern/energy_perf.c

   1 /*
   2  * Copyright (c) 2013 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 #include <kern/energy_perf.h>
  30 #include <libsa/types.h>
  31 #include <sys/kdebug.h>
  32 #include <stddef.h>
  33 #include <machine/machine_routines.h>
  34
  35 void gpu_describe(__unused gpu_descriptor_t gdesc) {
  36         KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_ENERGY_PERF, 1), gdesc->gpu_id, gdesc->gpu_max_domains, 0, 0, 0);
  37 }
  38
  39 uint64_t gpu_accumulate_time(__unused uint32_t scope, __unused uint32_t gpu_id, __unused uint32_t gpu_domain, __unused uint64_t gpu_accumulated_ns, __unused uint64_t gpu_tstamp_ns) {
  40         KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_ENERGY_PERF, 2), scope, gpu_id, gpu_domain, gpu_accumulated_ns, gpu_tstamp_ns);
  41         ml_gpu_stat_update(gpu_accumulated_ns);
  42         return 0;
  43 }
  44
  45 static uint64_t io_rate_update_cb_default(__unused uint64_t io_rate_flags, __unused uint64_t read_ops_delta, __unused uint64_t write_ops_delta, __unused uint64_t read_bytes_delta, __unused uint64_t write_bytes_delta) {
  46         KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_ENERGY_PERF, 3), io_rate_flags, read_ops_delta, write_ops_delta, read_bytes_delta, write_bytes_delta);
  47         return 0;
  48 }
  49
  50 io_rate_update_callback_t io_rate_update_cb = io_rate_update_cb_default;
  51
  52 void io_rate_update_register(io_rate_update_callback_t io_rate_update_cb_new) {
  53         if (io_rate_update_cb_new != NULL) {
  54                 io_rate_update_cb = io_rate_update_cb_new;
  55         } else {
  56                 io_rate_update_cb = io_rate_update_cb_default;
  57         }
  58 }
  59
  60 uint64_t io_rate_update(uint64_t io_rate_flags, uint64_t read_ops_delta, uint64_t write_ops_delta, uint64_t read_bytes_delta, uint64_t write_bytes_delta) {
  61         return io_rate_update_cb(io_rate_flags, read_ops_delta, write_ops_delta, read_bytes_delta, write_bytes_delta);
  62 }
  63
  64 static uint64_t gpu_set_fceiling_cb_default(__unused uint32_t gfr, __unused uint64_t gfp) {
  65         return 0ULL;
  66 }
  67
  68 gpu_set_fceiling_t gpu_set_fceiling_cb = gpu_set_fceiling_cb_default;
  69
  70 void gpu_fceiling_cb_register(gpu_set_fceiling_t gnewcb) {
  71         if (gnewcb != NULL) {
  72                 gpu_set_fceiling_cb = gnewcb;
  73         } else {
  74                 gpu_set_fceiling_cb = gpu_set_fceiling_cb_default;
  75         }
  76 }
  77
  78 void gpu_submission_telemetry(
  79         __unused uint64_t gpu_ncmds,
  80         __unused uint64_t gpu_noutstanding_avg,
  81         __unused uint64_t gpu_busy_ns_total,
  82         __unused uint64_t gpu_cycles,
  83         __unused uint64_t gpu_telemetry_valid_flags,
  84         __unused uint64_t gpu_telemetry_misc) {
  85
  86 }