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/*
* Written by Oron Peled <oron@actcom.co.il>
* Copyright (C) 2004-2006, Xorcom
*
* All rights reserved.
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include "xdefs.h"
#include "xpd.h"
#include "xpp_zap.h"
#include "xproto.h"
#include "zap_debug.h"
#include <linux/module.h>
static const char rcsid[] = "$Id$";
extern int print_dbg;
static bool pcm_valid(xpd_t *xpd, xpacket_t *pack);
/*---------------- GLOBAL Protocol Commands -------------------------------*/
static bool global_packet_is_valid(xpacket_t *pack);
static void global_packet_dump(xpacket_t *pack);
/*---------------- GLOBAL: HOST COMMANDS ----------------------------------*/
/* 0x04 */ HOSTCMD(GLOBAL, DESC_REQ, int xpd_num)
{
int ret = 0;
xpacket_t *pack;
if(!xbus) {
DBG("NO XBUS\n");
return -EINVAL;
}
XPACKET_NEW(pack, xbus, GLOBAL, DESC_REQ, xpd_num);
DBG("on %s #%d\n", xbus->busname, xpd_num);
ret = packet_send(xbus, pack);
XBUS_COUNTER(xbus, DESC_REQ)++;
return ret;
}
/* 0x11 */ HOSTCMD(GLOBAL, PCM_WRITE, xpp_line_t lines, volatile byte *buf)
{
int ret = 0;
xpacket_t *pack;
byte *pcm;
byte *start_pcm;
int i;
BUG_ON(!xbus);
BUG_ON(!xpd);
lines &= ~xpd->no_pcm;
// if(lines == 0)
// return 0;
/*
* FIXME: Workaround a bug in sync code of the Astribank.
* Send dummy PCM for sync.
*/
if(lines == 0)
lines = BIT(0);
XPACKET_NEW(pack, xbus, GLOBAL, PCM_WRITE, xpd->id);
RPACKET_FIELD(pack, GLOBAL, PCM_WRITE, lines) = lines;
start_pcm = pcm = RPACKET_FIELD(pack, GLOBAL, PCM_WRITE, pcm);
for_each_line(xpd, i) {
if(IS_SET(lines, i)) {
memcpy(pcm, (byte *)buf, ZT_CHUNKSIZE);
pcm += ZT_CHUNKSIZE;
}
buf += ZT_CHUNKSIZE;
}
pack->datalen = sizeof(xpp_line_t) + (pcm - start_pcm);
packet_send(xbus, pack);
XPD_COUNTER(xpd, PCM_WRITE)++;
XBUS_COUNTER(xbus, PCM_WRITE)++;
return ret;
}
/* 0x19 */ HOSTCMD(GLOBAL, SYNC_SOURCE, bool setit, bool is_master)
{
xpacket_t *pack;
byte mask = 0;
BUG_ON(!xbus);
BUG_ON(!xpd);
if(is_master)
mask |= BIT(0);
if(!setit)
mask |= BIT(1);
DBG("SYNC_SOURCE %s setit=%s is_master=%s (mask=0x%X)\n",
xpd->xpdname, (setit)?"yes":"no", (is_master)?"yes":"no", mask);
XPACKET_NEW(pack, xbus, GLOBAL, SYNC_SOURCE, xpd->id);
RPACKET_FIELD(pack, GLOBAL, SYNC_SOURCE, mask) = mask;
packet_send(xbus, pack);
return 0;
}
/*---------------- GLOBAL: Astribank Reply Handlers -----------------------*/
HANDLER_DEF(GLOBAL, NULL_REPLY)
{
DBG("got len=%d\n", pack->datalen);
return 0;
}
HANDLER_DEF(GLOBAL, DEV_DESC)
{
byte rev = RPACKET_FIELD(pack, GLOBAL, DEV_DESC, rev);
byte type = RPACKET_FIELD(pack, GLOBAL, DEV_DESC, type);
xpp_line_t line_status = RPACKET_FIELD(pack, GLOBAL, DEV_DESC, line_status);
xpd_addr_t xpd_addr = RPACKET_FIELD(pack, GLOBAL, DEV_DESC, addr);
struct card_desc_struct *card_desc;
unsigned long flags;
BUG_ON(!xbus);
if((card_desc = kmalloc(sizeof(struct card_desc_struct), GFP_ATOMIC)) == NULL) {
ERR("%s: Card description allocation failed.\n", __FUNCTION__);
return -ENOMEM;
}
memset(card_desc, 0, sizeof(struct card_desc_struct));
card_desc->magic = CARD_DESC_MAGIC;
INIT_LIST_HEAD(&card_desc->card_list);
card_desc->xbus = xbus;
card_desc->type = type;
card_desc->rev = rev;
card_desc->xpd_addr = xpd_addr;
spin_lock_irqsave(&xbus->lock, flags);
DBG("xpd=%d-%d type=%d rev=%d line_status=0x%04X\n",
xpd_addr.unit, xpd_addr.subunit, type, rev, line_status);
if(type == XPD_TYPE_NOMODULE)
XBUS_COUNTER(xbus, DEV_DESC_EMPTY)++;
else
XBUS_COUNTER(xbus, DEV_DESC_FULL)++;
atomic_inc(&xbus->count_poll_answers);
wake_up(&xbus->wait_for_polls);
list_add_tail(&card_desc->card_list, &xbus->poll_results);
spin_unlock_irqrestore(&xbus->lock, flags);
return 0;
}
HANDLER_DEF(GLOBAL, PCM_READ)
{
/* FIXME: work around temporary hardware bug */
xpp_line_t lines = RPACKET_FIELD(pack, GLOBAL, PCM_READ, lines);
const byte *pcm = RPACKET_FIELD(pack, GLOBAL, PCM_READ, pcm);
volatile u_char *readchunk;
volatile u_char *r;
unsigned long flags;
int i;
BUG_ON(!xbus);
if(!xpd) {
#if 0
int xpd_num = XPD_NUM(pack->content.addr);
NOTICE("%s: received %s for non-existing xpd: %d\n",
__FUNCTION__, cmd->name, xpd_num);
#endif
return -EPROTO;
}
// DBG("lines=0x%04X\n", lines);
if(!pcm_valid(xpd, pack)) {
return -EPROTO;
}
spin_lock_irqsave(&xpd->lock, flags);
if (xpd->timer_count & 1) {
/* First part */
r = readchunk = xpd->readchunk;
} else {
r = readchunk = xpd->readchunk + ZT_CHUNKSIZE * CHANNELS_PERXPD;
}
/* Copy PCM and put each channel in its index */
for_each_line(xpd, i) {
if(IS_SET(lines, i)) {
memcpy((u_char *)r, pcm, ZT_CHUNKSIZE);
//memset((u_char *)r, 0x5A, ZT_CHUNKSIZE); // DEBUG
pcm += ZT_CHUNKSIZE;
}
r += ZT_CHUNKSIZE;
}
XPD_COUNTER(xpd, PCM_READ)++;
XBUS_COUNTER(xpd->xbus, PCM_READ)++;
spin_unlock_irqrestore(&xpd->lock, flags);
xpp_tick((unsigned long)xpd);
return 0;
}
HANDLER_DEF(GLOBAL, SYNC_REPLY)
{
byte mask = RPACKET_FIELD(pack, GLOBAL, SYNC_REPLY, mask);
bool setit = mask & 0x01;
BUG_ON(!xbus);
if(!xpd) {
int xpd_num = XPD_NUM(pack->content.addr);
NOTICE("%s: received %s for non-existing xpd: %d\n", __FUNCTION__, cmd->name, xpd_num);
return -EPROTO;
}
DBG("%s/%s: SYNC_REPLY: 0x%X %s\n", xpd->xbus->busname, xpd->xpdname,
mask, (setit) ? "SET SYNC MASTER" : "");
if(setit)
sync_master_is(xpd);
return 0;
}
xproto_table_t PROTO_TABLE(GLOBAL) = {
.entries = {
/* Card Opcode */
XENTRY( GLOBAL, NULL_REPLY ),
XENTRY( GLOBAL, DEV_DESC ),
XENTRY( GLOBAL, PCM_READ ),
XENTRY( GLOBAL, SYNC_REPLY ),
},
.name = "GLOBAL",
.packet_is_valid = global_packet_is_valid,
.packet_dump = global_packet_dump,
};
static bool global_packet_is_valid(xpacket_t *pack)
{
const xproto_entry_t *xe;
//DBG("\n");
xe = xproto_global_entry(pack->content.opcode);
return xe != NULL;
}
static void global_packet_dump(xpacket_t *pack)
{
DBG("\n");
}
static bool pcm_valid(xpd_t *xpd, xpacket_t *pack)
{
xpp_line_t lines = RPACKET_FIELD(pack, GLOBAL, PCM_READ, lines);
int i;
int count = 0;
BUG_ON(!pack);
BUG_ON(pack->content.opcode != XPROTO_NAME(GLOBAL, PCM_READ));
for_each_line(xpd, i)
if(IS_SET(lines, i))
count++;
if(pack->datalen != (sizeof(xpp_line_t) + count * 8)) {
static int rate_limit = 0;
XPD_COUNTER(xpd, RECV_ERRORS)++;
if((rate_limit++ % 1000) <= 10) {
ERR("BAD PCM REPLY: pack->datalen=%d, count=%d\n", pack->datalen, count);
}
return 0;
}
return 1;
}
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