int bg_f_chunk_read(bg_f_io_t * io, bg_f_chunk_t * ch)
{
ch->start = io->ftell_callback(io->data);
if(!read_32(io, &ch->type) ||
!read_64(io, &ch->size))
return 0;
return 1;
}
int place_bad_addresses(struct ctx *p_ctx, int action)
{
int cnt = NUM_CMDS;
int wait_try=MAX_TRY_WAIT;
int p_cmd = 0;
int i;
__u64 room;
__u64 baddr = 0x1234;
/* make memory updates visible to AFU before MMIO */
asm volatile( "lwsync" : : );
if (2 == action)
{
// set up bad HRRQ address
write_64(&p_ctx->p_host_map->rrq_start, (__u64)0x456123);
write_64(&p_ctx->p_host_map->rrq_end, (__u64)0x895e6fe);
bad_address= true;
}
if (3 == action)
{
//cmd_room violation
room = read_64(&p_ctx->p_host_map->cmd_room);
debug("%d:placing %d cmds in 0X%"PRIX64" cmd_room...\n",pid,NUM_CMDS,room);
for (i=0;i<NUM_CMDS ;i++)
write_64(&p_ctx->p_host_map->ioarrin,
(__u64)&p_ctx->cmd[i].rcb);
bad_address= true;
return 0;
}
while (cnt)
{
room = read_64(&p_ctx->p_host_map->cmd_room);
if (0 == room)
{
usleep(MC_BLOCK_DELAY_ROOM);
wait_try--;
}
if (0 == wait_try)
{
fprintf(stderr, "%d: send cmd wait over %d cmd remain\n",
pid, cnt);
return -1;
}
for (i = 0; i < room; i++)
{
// add a usleep here if room=0 ?
// write IOARRIN
if (1 == action)
{
//bad RCB address
write_64(&p_ctx->p_host_map->ioarrin, baddr*i);
bad_address= true;
}
else
{
write_64(&p_ctx->p_host_map->ioarrin,
(__u64)&p_ctx->cmd[p_cmd++].rcb);
}
wait_try = MAX_TRY_WAIT; //each cmd give try max time
if (cnt-- == 1) break;
}
}
return 0;
}
Buffer::ConstPointer
Buffer::read(uint64_t &out_value) const throw(KafkaError) {
out_value = *reinterpret_cast<const uint64_t *>(read_64());
return shared_from_this();
}