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/* Copyright 2016 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <endian.h>
#include "sbefifo_private.h"
void sbefifo_ffdc_clear(struct sbefifo_context *sctx)
{
sctx->status = 0;
if (sctx->ffdc) {
free(sctx->ffdc);
sctx->ffdc = NULL;
sctx->ffdc_len = 0;
}
}
void sbefifo_ffdc_set(struct sbefifo_context *sctx, uint32_t status, uint8_t *ffdc, uint32_t ffdc_len)
{
sctx->status = status;
sctx->ffdc = malloc(ffdc_len);
if (!sctx->ffdc) {
fprintf(stderr, "Memory allocation error\n");
return;
}
memcpy(sctx->ffdc, ffdc, ffdc_len);
sctx->ffdc_len = ffdc_len;
}
uint32_t sbefifo_ffdc_get(struct sbefifo_context *sctx, const uint8_t **ffdc, uint32_t *ffdc_len)
{
*ffdc = sctx->ffdc;
*ffdc_len = sctx->ffdc_len;
return sctx->status;
}
static int sbefifo_ffdc_get_uint32(struct sbefifo_context *sctx, uint32_t offset, uint32_t *value)
{
uint32_t v;
if (offset + 4 > sctx->ffdc_len)
return -1;
memcpy(&v, sctx->ffdc + offset, 4);
*value = be32toh(v);
return 0;
}
static int sbefifo_ffdc_dump_pkg(struct sbefifo_context *sctx, uint32_t offset)
{
uint32_t offset2 = offset;
uint32_t header, value;
uint16_t magic, len_words;
int i, rc;
rc = sbefifo_ffdc_get_uint32(sctx, offset2, &header);
if (rc < 0)
return -1;
offset2 += 4;
/*
* FFDC package structure
*
* +----------+----------+----------+----------+
* | Byte 0 | Byte 1 | Byte 2 | Byte 3 |
* +----------+----------+----------+----------+----------+
* | word 0 | magic | length in words (N) |
* +----------+---------------------+---------------------+
* | word 1 | sequence id | command |
* +----------+---------------------+---------------------+
* | word 2 | return code |
* +----------+-------------------------------------------+
* | word 3 | FFDC Data - word 0 |
* +----------+-------------------------------------------+
* | word 4 | FFDC Data - word 1 |
* +----------+-------------------------------------------+
* | ... | ... |
* +----------+-------------------------------------------+
* | word N | FFDC Data - word N-3 |
* +----------+----------+----------+----------+----------+
*/
magic = header >> 16;
if (magic != 0xffdc) {
fprintf(stderr, "sbefifo: ffdc expected 0xffdc, got 0x%04x\n", magic);
return -1;
}
len_words = header & 0xffff;
rc = sbefifo_ffdc_get_uint32(sctx, offset2, &value);
if (rc < 0)
return -1;
offset2 += 4;
printf("FFDC: Sequence = %u\n", value >> 16);
printf("FFDC: Command = 0x%08x\n", value & 0xffff);
rc = sbefifo_ffdc_get_uint32(sctx, offset2, &value);
if (rc < 0)
return -1;
offset2 += 4;
printf("FFDC: RC = 0x%08x\n", value);
for (i=0; i<len_words-3; i++) {
rc = sbefifo_ffdc_get_uint32(sctx, offset2, &value);
if (rc < 0)
return -1;
offset2 += 4;
printf("FFDC: Data: 0x%08x\n", value);
}
return offset2 - offset;
}
void sbefifo_ffdc_dump(struct sbefifo_context *sctx)
{
uint32_t offset = 0;
while (offset < sctx->ffdc_len) {
int n;
n = sbefifo_ffdc_dump_pkg(sctx, offset);
if (n <= 0)
break;
offset += n;
}
}
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