diff options
Diffstat (limited to 'drivers/gator/gator_trace_gpu.c')
| -rw-r--r-- | drivers/gator/gator_trace_gpu.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/drivers/gator/gator_trace_gpu.c b/drivers/gator/gator_trace_gpu.c new file mode 100644 index 00000000000..d0539877c06 --- /dev/null +++ b/drivers/gator/gator_trace_gpu.c @@ -0,0 +1,212 @@ +/** + * Copyright (C) ARM Limited 2010-2012. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include "gator.h" + +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/time.h> +#include <linux/math64.h> + +#ifdef MALI_SUPPORT +#include "linux/mali_linux_trace.h" +#endif +#include "gator_trace_gpu.h" + +/* + * Taken from MALI_PROFILING_EVENT_TYPE_* items in Mali DDK. + */ +#define EVENT_TYPE_SINGLE 0 +#define EVENT_TYPE_START 1 +#define EVENT_TYPE_STOP 2 +#define EVENT_TYPE_SUSPEND 3 +#define EVENT_TYPE_RESUME 4 + + +/* Note whether tracepoints have been registered */ +static int mali_timeline_trace_registered; +static int mali_job_slots_trace_registered; +static int gpu_trace_registered; + +#define GPU_START 1 +#define GPU_STOP 2 + +#define GPU_UNIT_VP 1 +#define GPU_UNIT_FP 2 +#define GPU_UNIT_CL 3 + +#define MALI_400 (0x0b07) +#define MALI_T6xx (0x0056) + +#if defined(MALI_SUPPORT) && (MALI_SUPPORT != MALI_T6xx) +#include "gator_events_mali_400.h" + +/* + * Taken from MALI_PROFILING_EVENT_CHANNEL_* in Mali DDK. + */ +enum { + EVENT_CHANNEL_SOFTWARE = 0, + EVENT_CHANNEL_VP0 = 1, + EVENT_CHANNEL_FP0 = 5, + EVENT_CHANNEL_FP1, + EVENT_CHANNEL_FP2, + EVENT_CHANNEL_FP3, + EVENT_CHANNEL_FP4, + EVENT_CHANNEL_FP5, + EVENT_CHANNEL_FP6, + EVENT_CHANNEL_FP7, + EVENT_CHANNEL_GPU = 21 +}; + +/** + * These events are applicable when the type MALI_PROFILING_EVENT_TYPE_SINGLE is used from the GPU channel + */ +enum { + EVENT_REASON_SINGLE_GPU_NONE = 0, + EVENT_REASON_SINGLE_GPU_FREQ_VOLT_CHANGE = 1, +}; + + +GATOR_DEFINE_PROBE(mali_timeline_event, TP_PROTO(unsigned int event_id, unsigned int d0, unsigned int d1, unsigned int d2, unsigned int d3, unsigned int d4)) +{ + unsigned int component, state; + + // do as much work as possible before disabling interrupts + component = (event_id >> 16) & 0xFF; // component is an 8-bit field + state = (event_id >> 24) & 0xF; // state is a 4-bit field + + switch (state) { + case EVENT_TYPE_START: + if (component == EVENT_CHANNEL_VP0) { + /* tgid = d0; pid = d1; */ + marshal_sched_gpu(GPU_START, GPU_UNIT_VP, 0, d0, d1); + } else if (component >= EVENT_CHANNEL_FP0 && component <= EVENT_CHANNEL_FP7) { + /* tgid = d0; pid = d1; */ + marshal_sched_gpu(GPU_START, GPU_UNIT_FP, component - EVENT_CHANNEL_FP0, d0, d1); + } + break; + + case EVENT_TYPE_STOP: + if (component == EVENT_CHANNEL_VP0) { + marshal_sched_gpu(GPU_STOP, GPU_UNIT_VP, 0, 0, 0); + } else if (component >= EVENT_CHANNEL_FP0 && component <= EVENT_CHANNEL_FP7) { + marshal_sched_gpu(GPU_STOP, GPU_UNIT_FP, component - EVENT_CHANNEL_FP0, 0, 0); + } + break; + + case EVENT_TYPE_SINGLE: + if (component == EVENT_CHANNEL_GPU) { + unsigned int reason = (event_id & 0xffff); + + if(reason == EVENT_REASON_SINGLE_GPU_FREQ_VOLT_CHANGE) { + gator_events_mali_log_dvfs_event(d0, d1); + } + } + break; + + default: + break; + } +} +#endif + +#if defined(MALI_SUPPORT) && (MALI_SUPPORT == MALI_T6xx) +GATOR_DEFINE_PROBE(mali_job_slots_event, TP_PROTO(unsigned int event_id, unsigned int tgid, unsigned int pid)) +{ + unsigned int component, state, type, unit = 0; + + component = (event_id >> 16) & 0xFF; // component is an 8-bit field + state = (event_id >> 24) & 0xF; // state is a 4-bit field + type = (state == EVENT_TYPE_START) ? GPU_START : GPU_STOP; + + switch (component) + { + case 0: + unit = GPU_UNIT_FP; + break; + case 1: + unit = GPU_UNIT_VP; + break; + case 2: + unit = GPU_UNIT_CL; + break; + } + + if (unit != 0) + { + marshal_sched_gpu(type, unit, 0, tgid, (pid != 0 ? pid : tgid)); + } +} +#endif + +GATOR_DEFINE_PROBE(gpu_activity_start, TP_PROTO(int gpu_unit, int gpu_core, struct task_struct *p)) +{ + marshal_sched_gpu(GPU_START, gpu_unit, gpu_core, (int)p->tgid, (int)p->pid); +} + +GATOR_DEFINE_PROBE(gpu_activity_stop, TP_PROTO(int gpu_unit, int gpu_core)) +{ + marshal_sched_gpu(GPU_STOP, gpu_unit, gpu_core, 0, 0); +} + +int gator_trace_gpu_start(void) +{ + /* + * Returns nonzero for installation failed + * Absence of gpu trace points is not an error + */ + + gpu_trace_registered = mali_timeline_trace_registered = mali_job_slots_trace_registered = 0; + +#if defined(MALI_SUPPORT) && (MALI_SUPPORT != MALI_T6xx) + if (!GATOR_REGISTER_TRACE(mali_timeline_event)) { + mali_timeline_trace_registered = 1; + } +#endif + +#if defined(MALI_SUPPORT) && (MALI_SUPPORT == MALI_T6xx) + if (!GATOR_REGISTER_TRACE(mali_job_slots_event)) { + mali_job_slots_trace_registered = 1; + } +#endif + + if (!mali_timeline_trace_registered) { + if (GATOR_REGISTER_TRACE(gpu_activity_start)) { + return 0; + } + if (GATOR_REGISTER_TRACE(gpu_activity_stop)) { + GATOR_UNREGISTER_TRACE(gpu_activity_start); + return 0; + } + gpu_trace_registered = 1; + } + + return 0; +} + +void gator_trace_gpu_stop(void) +{ +#if defined(MALI_SUPPORT) && (MALI_SUPPORT != MALI_T6xx) + if (mali_timeline_trace_registered) { + GATOR_UNREGISTER_TRACE(mali_timeline_event); + } +#endif + +#if defined(MALI_SUPPORT) && (MALI_SUPPORT == MALI_T6xx) + if (mali_job_slots_trace_registered) { + GATOR_UNREGISTER_TRACE(mali_job_slots_event); + } +#endif + + if (gpu_trace_registered) { + GATOR_UNREGISTER_TRACE(gpu_activity_stop); + GATOR_UNREGISTER_TRACE(gpu_activity_start); + } + + gpu_trace_registered = mali_timeline_trace_registered = mali_job_slots_trace_registered = 0; +} |