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/* -*- c++ -*- */
/*
* Copyright 2008 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* GNU Radio is distributed in the hope that 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <gc_logging.h>
#include <spu_intrinsics.h>
#include <spu_mfcio.h>
#include <gc_spu_args.h>
static gc_eaddr_t log_base_ea; // base address of log entries in EA
static uint32_t log_idx_mask; // nentries - 1
static uint32_t log_idx; // current log entry index
static uint32_t log_seqno;
static int log_tags; // two consecutive tags
static int tmp_buffer_busy; // bitmask: buffer busy state
static int tmp_buffer_idx; // 0 or 1
static gc_log_entry_t tmp_buffer[2];
void
_gc_log_init(gc_log_t info)
{
spu_write_decrementer(~0);
log_base_ea = info.base;
log_idx_mask = info.nentries - 1;
log_idx = 0;
log_seqno = 0;
log_tags = mfc_multi_tag_reserve(2);
tmp_buffer_busy = 0;
tmp_buffer_idx = 0;
gc_log_write0(GCL_SS_SYS, 0);
}
void
_gc_log_write(gc_log_entry_t entry)
{
if (log_base_ea == 0)
return;
entry.seqno = log_seqno++;
entry.timestamp = spu_read_decrementer();
if (tmp_buffer_busy & (1 << tmp_buffer_idx)){
mfc_write_tag_mask(1 << (log_tags + tmp_buffer_idx));
mfc_read_tag_status_all();
}
tmp_buffer[tmp_buffer_idx] = entry; // save local copy
mfc_put(&tmp_buffer[tmp_buffer_idx],
log_base_ea + log_idx * sizeof(entry), sizeof(entry),
log_tags + tmp_buffer_idx, 0, 0);
tmp_buffer_busy |= (1 << tmp_buffer_idx);
tmp_buffer_idx ^= 0x1;
log_idx = (log_idx + 1) & log_idx_mask;
}
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