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// SPDX-License-Identifier: GPL-2.0
/*
* Support for Intel Camera Imaging ISP subsystem.
* Copyright (c) 2015, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*/
#include "assert_support.h"
#include "sh_css_metrics.h"
#include "sp.h"
#include "isp.h"
#include "sh_css_internal.h"
#define MULTIPLE_PCS 0
#define SUSPEND 0
#define NOF_PCS 1
#define RESUME_MASK 0x8
#define STOP_MASK 0x0
static bool pc_histogram_enabled;
static struct sh_css_pc_histogram *isp_histogram;
static struct sh_css_pc_histogram *sp_histogram;
struct sh_css_metrics sh_css_metrics;
void
sh_css_metrics_start_frame(void)
{
sh_css_metrics.frame_metrics.num_frames++;
}
static void
clear_histogram(struct sh_css_pc_histogram *histogram)
{
unsigned int i;
assert(histogram);
for (i = 0; i < histogram->length; i++) {
histogram->run[i] = 0;
histogram->stall[i] = 0;
histogram->msink[i] = 0xFFFF;
}
}
void
sh_css_metrics_enable_pc_histogram(bool enable)
{
pc_histogram_enabled = enable;
}
static void
make_histogram(struct sh_css_pc_histogram *histogram, unsigned int length)
{
assert(histogram);
if (histogram->length)
return;
if (histogram->run)
return;
histogram->run = kvmalloc(length * sizeof(*histogram->run),
GFP_KERNEL);
if (!histogram->run)
return;
histogram->stall = kvmalloc(length * sizeof(*histogram->stall),
GFP_KERNEL);
if (!histogram->stall)
return;
histogram->msink = kvmalloc(length * sizeof(*histogram->msink),
GFP_KERNEL);
if (!histogram->msink)
return;
histogram->length = length;
clear_histogram(histogram);
}
static void
insert_binary_metrics(struct sh_css_binary_metrics **l,
struct sh_css_binary_metrics *metrics)
{
assert(l);
assert(*l);
assert(metrics);
for (; *l; l = &(*l)->next)
if (*l == metrics)
return;
*l = metrics;
metrics->next = NULL;
}
void
sh_css_metrics_start_binary(struct sh_css_binary_metrics *metrics)
{
assert(metrics);
if (!pc_histogram_enabled)
return;
isp_histogram = &metrics->isp_histogram;
sp_histogram = &metrics->sp_histogram;
make_histogram(isp_histogram, ISP_PMEM_DEPTH);
make_histogram(sp_histogram, SP_PMEM_DEPTH);
insert_binary_metrics(&sh_css_metrics.binary_metrics, metrics);
}
void
sh_css_metrics_sample_pcs(void)
{
bool stall;
unsigned int pc;
unsigned int msink;
if (!pc_histogram_enabled)
return;
if (isp_histogram) {
msink = isp_ctrl_load(ISP0_ID, ISP_CTRL_SINK_REG);
pc = isp_ctrl_load(ISP0_ID, ISP_PC_REG);
isp_histogram->msink[pc] &= msink;
stall = (msink != 0x7FF);
if (stall)
isp_histogram->stall[pc]++;
else
isp_histogram->run[pc]++;
}
if (sp_histogram && 0) {
msink = sp_ctrl_load(SP0_ID, SP_CTRL_SINK_REG);
pc = sp_ctrl_load(SP0_ID, SP_PC_REG);
sp_histogram->msink[pc] &= msink;
stall = (msink != 0x7FF);
if (stall)
sp_histogram->stall[pc]++;
else
sp_histogram->run[pc]++;
}
}
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