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// SPDX-License-Identifier: GPL-2.0
/*
* (C) COPYRIGHT 2019 ARM Limited. All rights reserved.
* Author: James.Qian.Wang <james.qian.wang@arm.com>
*
*/
#include <drm/drm_print.h>
#include "komeda_dev.h"
struct komeda_str {
char *str;
u32 sz;
u32 len;
};
/* return 0 on success, < 0 on no space.
*/
static int komeda_sprintf(struct komeda_str *str, const char *fmt, ...)
{
va_list args;
int num, free_sz;
int err;
free_sz = str->sz - str->len - 1;
if (free_sz <= 0)
return -ENOSPC;
va_start(args, fmt);
num = vsnprintf(str->str + str->len, free_sz, fmt, args);
va_end(args);
if (num < free_sz) {
str->len += num;
err = 0;
} else {
str->len = str->sz - 1;
err = -ENOSPC;
}
return err;
}
static void evt_sprintf(struct komeda_str *str, u64 evt, const char *msg)
{
if (evt)
komeda_sprintf(str, msg);
}
static void evt_str(struct komeda_str *str, u64 events)
{
if (events == 0ULL) {
komeda_sprintf(str, "None");
return;
}
evt_sprintf(str, events & KOMEDA_EVENT_VSYNC, "VSYNC|");
evt_sprintf(str, events & KOMEDA_EVENT_FLIP, "FLIP|");
evt_sprintf(str, events & KOMEDA_EVENT_EOW, "EOW|");
evt_sprintf(str, events & KOMEDA_EVENT_MODE, "OP-MODE|");
evt_sprintf(str, events & KOMEDA_EVENT_URUN, "UNDERRUN|");
evt_sprintf(str, events & KOMEDA_EVENT_OVR, "OVERRUN|");
/* GLB error */
evt_sprintf(str, events & KOMEDA_ERR_MERR, "MERR|");
evt_sprintf(str, events & KOMEDA_ERR_FRAMETO, "FRAMETO|");
/* DOU error */
evt_sprintf(str, events & KOMEDA_ERR_DRIFTTO, "DRIFTTO|");
evt_sprintf(str, events & KOMEDA_ERR_FRAMETO, "FRAMETO|");
evt_sprintf(str, events & KOMEDA_ERR_TETO, "TETO|");
evt_sprintf(str, events & KOMEDA_ERR_CSCE, "CSCE|");
/* LPU errors or events */
evt_sprintf(str, events & KOMEDA_EVENT_IBSY, "IBSY|");
evt_sprintf(str, events & KOMEDA_ERR_AXIE, "AXIE|");
evt_sprintf(str, events & KOMEDA_ERR_ACE0, "ACE0|");
evt_sprintf(str, events & KOMEDA_ERR_ACE1, "ACE1|");
evt_sprintf(str, events & KOMEDA_ERR_ACE2, "ACE2|");
evt_sprintf(str, events & KOMEDA_ERR_ACE3, "ACE3|");
/* LPU TBU errors*/
evt_sprintf(str, events & KOMEDA_ERR_TCF, "TCF|");
evt_sprintf(str, events & KOMEDA_ERR_TTNG, "TTNG|");
evt_sprintf(str, events & KOMEDA_ERR_TITR, "TITR|");
evt_sprintf(str, events & KOMEDA_ERR_TEMR, "TEMR|");
evt_sprintf(str, events & KOMEDA_ERR_TTF, "TTF|");
/* CU errors*/
evt_sprintf(str, events & KOMEDA_ERR_CPE, "COPROC|");
evt_sprintf(str, events & KOMEDA_ERR_ZME, "ZME|");
evt_sprintf(str, events & KOMEDA_ERR_CFGE, "CFGE|");
evt_sprintf(str, events & KOMEDA_ERR_TEMR, "TEMR|");
if (str->len > 0 && (str->str[str->len - 1] == '|')) {
str->str[str->len - 1] = 0;
str->len--;
}
}
static bool is_new_frame(struct komeda_events *a)
{
return (a->pipes[0] | a->pipes[1]) &
(KOMEDA_EVENT_FLIP | KOMEDA_EVENT_EOW);
}
void komeda_print_events(struct komeda_events *evts)
{
u64 print_evts = KOMEDA_ERR_EVENTS;
static bool en_print = true;
/* reduce the same msg print, only print the first evt for one frame */
if (evts->global || is_new_frame(evts))
en_print = true;
if (!en_print)
return;
if ((evts->global | evts->pipes[0] | evts->pipes[1]) & print_evts) {
char msg[256];
struct komeda_str str;
str.str = msg;
str.sz = sizeof(msg);
str.len = 0;
komeda_sprintf(&str, "gcu: ");
evt_str(&str, evts->global);
komeda_sprintf(&str, ", pipes[0]: ");
evt_str(&str, evts->pipes[0]);
komeda_sprintf(&str, ", pipes[1]: ");
evt_str(&str, evts->pipes[1]);
DRM_ERROR("err detect: %s\n", msg);
en_print = false;
}
}
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