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/*
*
* (C) COPYRIGHT 2011-2012 ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
*
* A copy of the licence is included with the program, and can also be obtained from Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include <kbase/src/common/mali_kbase.h>
/**
* @file mali_kbase_softjobs.c
*
* This file implements the logic behind software only jobs that are
* executed within the driver rather than being handed over to the GPU.
*/
static base_jd_event_code kbase_dump_cpu_gpu_time(kbase_context *kctx, mali_addr64 jc)
{
kbase_va_region *reg;
osk_phy_addr addr;
u64 pfn;
u32 offset;
char *page;
osk_timeval tv;
base_dump_cpu_gpu_counters data;
u64 system_time;
u64 cycle_counter;
u32 hi1, hi2;
OSK_MEMSET(&data, 0, sizeof(data));
/* Read hi, lo, hi to ensure that overflow from lo to hi is handled correctly */
do {
hi1 = kbase_reg_read(kctx->kbdev, GPU_CONTROL_REG(CYCLE_COUNT_HI), NULL);
cycle_counter = kbase_reg_read(kctx->kbdev, GPU_CONTROL_REG(CYCLE_COUNT_LO), NULL);
hi2 = kbase_reg_read(kctx->kbdev, GPU_CONTROL_REG(CYCLE_COUNT_HI), NULL);
cycle_counter |= (((u64)hi1) << 32);
} while (hi1 != hi2);
/* Read hi, lo, hi to ensure that overflow from lo to hi is handled correctly */
do {
hi1 = kbase_reg_read(kctx->kbdev, GPU_CONTROL_REG(TIMESTAMP_HI), NULL);
system_time = kbase_reg_read(kctx->kbdev, GPU_CONTROL_REG(TIMESTAMP_LO), NULL);
hi2 = kbase_reg_read(kctx->kbdev, GPU_CONTROL_REG(TIMESTAMP_HI), NULL);
system_time |= (((u64)hi1) << 32);
} while (hi1 != hi2);
/* Record the CPU's idea of current time */
osk_gettimeofday(&tv);
data.sec = tv.tv_sec;
data.usec = tv.tv_usec;
data.system_time = system_time;
data.cycle_counter = cycle_counter;
pfn = jc >> 12;
offset = jc & 0xFFF;
if (offset > 0x1000-sizeof(data))
{
/* Wouldn't fit in the page */
return BASE_JD_EVENT_JOB_CANCELLED;
}
reg = kbase_region_lookup(kctx, jc);
if (!reg)
{
return BASE_JD_EVENT_JOB_CANCELLED;
}
if (! (reg->flags & KBASE_REG_GPU_RW) )
{
/* Region is not writable by GPU so we won't write to it either */
return BASE_JD_EVENT_JOB_CANCELLED;
}
if (!reg->phy_pages)
{
return BASE_JD_EVENT_JOB_CANCELLED;
}
addr = reg->phy_pages[pfn - reg->start_pfn];
if (!addr)
{
return BASE_JD_EVENT_JOB_CANCELLED;
}
page = osk_kmap(addr);
if (!page)
{
return BASE_JD_EVENT_JOB_CANCELLED;
}
memcpy(page+offset, &data, sizeof(data));
osk_kunmap(addr, page);
return BASE_JD_EVENT_DONE;
}
void kbase_process_soft_job( kbase_context *kctx, kbase_jd_atom *katom )
{
switch(katom->core_req) {
case BASE_JD_REQ_SOFT_DUMP_CPU_GPU_TIME:
katom->event.event_code = kbase_dump_cpu_gpu_time( kctx, katom->jc);
break;
}
}
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