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/*
* Copyright 2017 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Tom St Denis <tom.stdenis@amd.com>
*
*/
#include "umrapp.h"
void umr_scan_log(struct umr_asic *asic)
{
char line[256], *chr;
FILE *f;
int i, j, k, found;
unsigned long delta, did, regno, value, write;
f = fopen("/sys/kernel/debug/tracing/trace", "r");
if (!f) {
perror("Could not open ftrace log");
return;
}
while (fgets(line, sizeof(line), f)) {
found = 0;
delta = 0;
write = 0;
chr = strstr(line, "amdgpu_mm_");
if (chr) {
if (sscanf(chr, "amdgpu_mm_rreg: 0x%08lx, 0x%08lx, 0x%08lx",
&did, ®no, &value) != 3) {
write = 1;
if (sscanf(chr, "amdgpu_mm_wreg: 0x%08lx, 0x%08lx, 0x%08lx",
&did, ®no, &value) != 3)
continue;
}
if (did == asic->did) {
do {
// try to find reg in asic profile
for (i = 0; i < asic->no_blocks; i++)
for (j = 0; j < asic->blocks[i]->no_regs; j++)
if (asic->blocks[i]->regs[j].type == REG_MMIO &&
asic->blocks[i]->regs[j].addr == regno) {
// bingo
if (write)
printf("%s.%s.%s +0x%04lx <= 0x%08lx\n",
asic->asicname, asic->blocks[i]->ipname, asic->blocks[i]->regs[j].regname,
(unsigned long)delta,
(unsigned long)value);
else
printf("%s.%s.%s +0x%04lx => 0x%08lx\n",
asic->asicname, asic->blocks[i]->ipname, asic->blocks[i]->regs[j].regname,
(unsigned long)delta,
(unsigned long)value);
if (options.bitfields)
for (k = 0; k < asic->blocks[i]->regs[j].no_bits; k++) {
uint32_t v;
v = (1UL << (asic->blocks[i]->regs[j].bits[k].stop + 1 - asic->blocks[i]->regs[j].bits[k].start)) - 1;
v &= (value >> asic->blocks[i]->regs[j].bits[k].start);
asic->blocks[i]->regs[j].bits[k].bitfield_print(asic, asic->asicname, asic->blocks[i]->ipname, asic->blocks[i]->regs[j].regname, asic->blocks[i]->regs[j].bits[k].regname, asic->blocks[i]->regs[j].bits[k].start, asic->blocks[i]->regs[j].bits[k].stop, v);
}
found = 1;
goto out;
}
out:
regno -= 1;
delta += 1;
} while (!found);
}
}
}
fclose(f);
if (options.empty_log) {
f = fopen("/sys/kernel/debug/tracing/trace", "w");
if (f) {
fprintf(f, "foo\n");
fclose(f);
}
}
}
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