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linux/drivers/isdn/hisax/netjet.c
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00

983 lines
26 KiB
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/* $Id: netjet.c,v 1.29.2.4 2004/02/11 13:21:34 keil Exp $
*
* low level stuff for Traverse Technologie NETJet ISDN cards
*
* Author Karsten Keil
* Copyright by Karsten Keil <keil@isdn4linux.de>
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
* Thanks to Traverse Technologies Australia for documents and information
*
* 16-Apr-2002 - led code added - Guy Ellis (guy@traverse.com.au)
*
*/
#include <linux/init.h>
#include "hisax.h"
#include "isac.h"
#include "hscx.h"
#include "isdnl1.h"
#include <linux/interrupt.h>
#include <linux/ppp_defs.h>
#include <linux/slab.h>
#include <asm/io.h>
#include "netjet.h"
/* Interface functions */
u_char
NETjet_ReadIC(struct IsdnCardState *cs, u_char offset)
{
u_char ret;
cs->hw.njet.auxd &= 0xfc;
cs->hw.njet.auxd |= (offset>>4) & 3;
byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
ret = bytein(cs->hw.njet.isac + ((offset & 0xf)<<2));
return(ret);
}
void
NETjet_WriteIC(struct IsdnCardState *cs, u_char offset, u_char value)
{
cs->hw.njet.auxd &= 0xfc;
cs->hw.njet.auxd |= (offset>>4) & 3;
byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
byteout(cs->hw.njet.isac + ((offset & 0xf)<<2), value);
}
void
NETjet_ReadICfifo(struct IsdnCardState *cs, u_char *data, int size)
{
cs->hw.njet.auxd &= 0xfc;
byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
insb(cs->hw.njet.isac, data, size);
}
void
NETjet_WriteICfifo(struct IsdnCardState *cs, u_char *data, int size)
{
cs->hw.njet.auxd &= 0xfc;
byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
outsb(cs->hw.njet.isac, data, size);
}
static void fill_mem(struct BCState *bcs, u_int *pos, u_int cnt, int chan, u_char fill)
{
u_int mask=0x000000ff, val = 0, *p=pos;
u_int i;
val |= fill;
if (chan) {
val <<= 8;
mask <<= 8;
}
mask ^= 0xffffffff;
for (i=0; i<cnt; i++) {
*p &= mask;
*p++ |= val;
if (p > bcs->hw.tiger.s_end)
p = bcs->hw.tiger.send;
}
}
static void
mode_tiger(struct BCState *bcs, int mode, int bc)
{
struct IsdnCardState *cs = bcs->cs;
u_char led;
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "Tiger mode %d bchan %d/%d",
mode, bc, bcs->channel);
bcs->mode = mode;
bcs->channel = bc;
switch (mode) {
case (L1_MODE_NULL):
fill_mem(bcs, bcs->hw.tiger.send,
NETJET_DMA_TXSIZE, bc, 0xff);
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "Tiger stat rec %d/%d send %d",
bcs->hw.tiger.r_tot, bcs->hw.tiger.r_err,
bcs->hw.tiger.s_tot);
if ((cs->bcs[0].mode == L1_MODE_NULL) &&
(cs->bcs[1].mode == L1_MODE_NULL)) {
cs->hw.njet.dmactrl = 0;
byteout(cs->hw.njet.base + NETJET_DMACTRL,
cs->hw.njet.dmactrl);
byteout(cs->hw.njet.base + NETJET_IRQMASK0, 0);
}
if (cs->typ == ISDN_CTYPE_NETJET_S)
{
// led off
led = bc & 0x01;
led = 0x01 << (6 + led); // convert to mask
led = ~led;
cs->hw.njet.auxd &= led;
byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
}
break;
case (L1_MODE_TRANS):
break;
case (L1_MODE_HDLC_56K):
case (L1_MODE_HDLC):
fill_mem(bcs, bcs->hw.tiger.send,
NETJET_DMA_TXSIZE, bc, 0xff);
bcs->hw.tiger.r_state = HDLC_ZERO_SEARCH;
bcs->hw.tiger.r_tot = 0;
bcs->hw.tiger.r_bitcnt = 0;
bcs->hw.tiger.r_one = 0;
bcs->hw.tiger.r_err = 0;
bcs->hw.tiger.s_tot = 0;
if (! cs->hw.njet.dmactrl) {
fill_mem(bcs, bcs->hw.tiger.send,
NETJET_DMA_TXSIZE, !bc, 0xff);
cs->hw.njet.dmactrl = 1;
byteout(cs->hw.njet.base + NETJET_DMACTRL,
cs->hw.njet.dmactrl);
byteout(cs->hw.njet.base + NETJET_IRQMASK0, 0x0f);
/* was 0x3f now 0x0f for TJ300 and TJ320 GE 13/07/00 */
}
bcs->hw.tiger.sendp = bcs->hw.tiger.send;
bcs->hw.tiger.free = NETJET_DMA_TXSIZE;
test_and_set_bit(BC_FLG_EMPTY, &bcs->Flag);
if (cs->typ == ISDN_CTYPE_NETJET_S)
{
// led on
led = bc & 0x01;
led = 0x01 << (6 + led); // convert to mask
cs->hw.njet.auxd |= led;
byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
}
break;
}
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "tiger: set %x %x %x %x/%x pulse=%d",
bytein(cs->hw.njet.base + NETJET_DMACTRL),
bytein(cs->hw.njet.base + NETJET_IRQMASK0),
bytein(cs->hw.njet.base + NETJET_IRQSTAT0),
inl(cs->hw.njet.base + NETJET_DMA_READ_ADR),
inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR),
bytein(cs->hw.njet.base + NETJET_PULSE_CNT));
}
static void printframe(struct IsdnCardState *cs, u_char *buf, int count, char *s) {
char tmp[128];
char *t = tmp;
int i=count,j;
u_char *p = buf;
t += sprintf(t, "tiger %s(%4d)", s, count);
while (i>0) {
if (i>16)
j=16;
else
j=i;
QuickHex(t, p, j);
debugl1(cs, tmp);
p += j;
i -= j;
t = tmp;
t += sprintf(t, "tiger %s ", s);
}
}
// macro for 64k
#define MAKE_RAW_BYTE for (j=0; j<8; j++) { \
bitcnt++;\
s_val >>= 1;\
if (val & 1) {\
s_one++;\
s_val |= 0x80;\
} else {\
s_one = 0;\
s_val &= 0x7f;\
}\
if (bitcnt==8) {\
bcs->hw.tiger.sendbuf[s_cnt++] = s_val;\
bitcnt = 0;\
}\
if (s_one == 5) {\
s_val >>= 1;\
s_val &= 0x7f;\
bitcnt++;\
s_one = 0;\
}\
if (bitcnt==8) {\
bcs->hw.tiger.sendbuf[s_cnt++] = s_val;\
bitcnt = 0;\
}\
val >>= 1;\
}
static int make_raw_data(struct BCState *bcs) {
// this make_raw is for 64k
register u_int i,s_cnt=0;
register u_char j;
register u_char val;
register u_char s_one = 0;
register u_char s_val = 0;
register u_char bitcnt = 0;
u_int fcs;
if (!bcs->tx_skb) {
debugl1(bcs->cs, "tiger make_raw: NULL skb");
return(1);
}
bcs->hw.tiger.sendbuf[s_cnt++] = HDLC_FLAG_VALUE;
fcs = PPP_INITFCS;
for (i=0; i<bcs->tx_skb->len; i++) {
val = bcs->tx_skb->data[i];
fcs = PPP_FCS (fcs, val);
MAKE_RAW_BYTE;
}
fcs ^= 0xffff;
val = fcs & 0xff;
MAKE_RAW_BYTE;
val = (fcs>>8) & 0xff;
MAKE_RAW_BYTE;
val = HDLC_FLAG_VALUE;
for (j=0; j<8; j++) {
bitcnt++;
s_val >>= 1;
if (val & 1)
s_val |= 0x80;
else
s_val &= 0x7f;
if (bitcnt==8) {
bcs->hw.tiger.sendbuf[s_cnt++] = s_val;
bitcnt = 0;
}
val >>= 1;
}
if (bcs->cs->debug & L1_DEB_HSCX)
debugl1(bcs->cs,"tiger make_raw: in %ld out %d.%d",
bcs->tx_skb->len, s_cnt, bitcnt);
if (bitcnt) {
while (8>bitcnt++) {
s_val >>= 1;
s_val |= 0x80;
}
bcs->hw.tiger.sendbuf[s_cnt++] = s_val;
bcs->hw.tiger.sendbuf[s_cnt++] = 0xff; // NJ<->NJ thoughput bug fix
}
bcs->hw.tiger.sendcnt = s_cnt;
bcs->tx_cnt -= bcs->tx_skb->len;
bcs->hw.tiger.sp = bcs->hw.tiger.sendbuf;
return(0);
}
// macro for 56k
#define MAKE_RAW_BYTE_56K for (j=0; j<8; j++) { \
bitcnt++;\
s_val >>= 1;\
if (val & 1) {\
s_one++;\
s_val |= 0x80;\
} else {\
s_one = 0;\
s_val &= 0x7f;\
}\
if (bitcnt==7) {\
s_val >>= 1;\
s_val |= 0x80;\
bcs->hw.tiger.sendbuf[s_cnt++] = s_val;\
bitcnt = 0;\
}\
if (s_one == 5) {\
s_val >>= 1;\
s_val &= 0x7f;\
bitcnt++;\
s_one = 0;\
}\
if (bitcnt==7) {\
s_val >>= 1;\
s_val |= 0x80;\
bcs->hw.tiger.sendbuf[s_cnt++] = s_val;\
bitcnt = 0;\
}\
val >>= 1;\
}
static int make_raw_data_56k(struct BCState *bcs) {
// this make_raw is for 56k
register u_int i,s_cnt=0;
register u_char j;
register u_char val;
register u_char s_one = 0;
register u_char s_val = 0;
register u_char bitcnt = 0;
u_int fcs;
if (!bcs->tx_skb) {
debugl1(bcs->cs, "tiger make_raw_56k: NULL skb");
return(1);
}
val = HDLC_FLAG_VALUE;
for (j=0; j<8; j++) {
bitcnt++;
s_val >>= 1;
if (val & 1)
s_val |= 0x80;
else
s_val &= 0x7f;
if (bitcnt==7) {
s_val >>= 1;
s_val |= 0x80;
bcs->hw.tiger.sendbuf[s_cnt++] = s_val;
bitcnt = 0;
}
val >>= 1;
};
fcs = PPP_INITFCS;
for (i=0; i<bcs->tx_skb->len; i++) {
val = bcs->tx_skb->data[i];
fcs = PPP_FCS (fcs, val);
MAKE_RAW_BYTE_56K;
}
fcs ^= 0xffff;
val = fcs & 0xff;
MAKE_RAW_BYTE_56K;
val = (fcs>>8) & 0xff;
MAKE_RAW_BYTE_56K;
val = HDLC_FLAG_VALUE;
for (j=0; j<8; j++) {
bitcnt++;
s_val >>= 1;
if (val & 1)
s_val |= 0x80;
else
s_val &= 0x7f;
if (bitcnt==7) {
s_val >>= 1;
s_val |= 0x80;
bcs->hw.tiger.sendbuf[s_cnt++] = s_val;
bitcnt = 0;
}
val >>= 1;
}
if (bcs->cs->debug & L1_DEB_HSCX)
debugl1(bcs->cs,"tiger make_raw_56k: in %ld out %d.%d",
bcs->tx_skb->len, s_cnt, bitcnt);
if (bitcnt) {
while (8>bitcnt++) {
s_val >>= 1;
s_val |= 0x80;
}
bcs->hw.tiger.sendbuf[s_cnt++] = s_val;
bcs->hw.tiger.sendbuf[s_cnt++] = 0xff; // NJ<->NJ thoughput bug fix
}
bcs->hw.tiger.sendcnt = s_cnt;
bcs->tx_cnt -= bcs->tx_skb->len;
bcs->hw.tiger.sp = bcs->hw.tiger.sendbuf;
return(0);
}
static void got_frame(struct BCState *bcs, int count) {
struct sk_buff *skb;
if (!(skb = dev_alloc_skb(count)))
printk(KERN_WARNING "TIGER: receive out of memory\n");
else {
memcpy(skb_put(skb, count), bcs->hw.tiger.rcvbuf, count);
skb_queue_tail(&bcs->rqueue, skb);
}
test_and_set_bit(B_RCVBUFREADY, &bcs->event);
schedule_work(&bcs->tqueue);
if (bcs->cs->debug & L1_DEB_RECEIVE_FRAME)
printframe(bcs->cs, bcs->hw.tiger.rcvbuf, count, "rec");
}
static void read_raw(struct BCState *bcs, u_int *buf, int cnt){
int i;
register u_char j;
register u_char val;
u_int *pend = bcs->hw.tiger.rec +NETJET_DMA_RXSIZE -1;
register u_char state = bcs->hw.tiger.r_state;
register u_char r_one = bcs->hw.tiger.r_one;
register u_char r_val = bcs->hw.tiger.r_val;
register u_int bitcnt = bcs->hw.tiger.r_bitcnt;
u_int *p = buf;
int bits;
u_char mask;
if (bcs->mode == L1_MODE_HDLC) { // it's 64k
mask = 0xff;
bits = 8;
}
else { // it's 56K
mask = 0x7f;
bits = 7;
};
for (i=0;i<cnt;i++) {
val = bcs->channel ? ((*p>>8) & 0xff) : (*p & 0xff);
p++;
if (p > pend)
p = bcs->hw.tiger.rec;
if ((val & mask) == mask) {
state = HDLC_ZERO_SEARCH;
bcs->hw.tiger.r_tot++;
bitcnt = 0;
r_one = 0;
continue;
}
for (j=0;j<bits;j++) {
if (state == HDLC_ZERO_SEARCH) {
if (val & 1) {
r_one++;
} else {
r_one=0;
state= HDLC_FLAG_SEARCH;
if (bcs->cs->debug & L1_DEB_HSCX)
debugl1(bcs->cs,"tiger read_raw: zBit(%d,%d,%d) %x",
bcs->hw.tiger.r_tot,i,j,val);
}
} else if (state == HDLC_FLAG_SEARCH) {
if (val & 1) {
r_one++;
if (r_one>6) {
state=HDLC_ZERO_SEARCH;
}
} else {
if (r_one==6) {
bitcnt=0;
r_val=0;
state=HDLC_FLAG_FOUND;
if (bcs->cs->debug & L1_DEB_HSCX)
debugl1(bcs->cs,"tiger read_raw: flag(%d,%d,%d) %x",
bcs->hw.tiger.r_tot,i,j,val);
}
r_one=0;
}
} else if (state == HDLC_FLAG_FOUND) {
if (val & 1) {
r_one++;
if (r_one>6) {
state=HDLC_ZERO_SEARCH;
} else {
r_val >>= 1;
r_val |= 0x80;
bitcnt++;
}
} else {
if (r_one==6) {
bitcnt=0;
r_val=0;
r_one=0;
val >>= 1;
continue;
} else if (r_one!=5) {
r_val >>= 1;
r_val &= 0x7f;
bitcnt++;
}
r_one=0;
}
if ((state != HDLC_ZERO_SEARCH) &&
!(bitcnt & 7)) {
state=HDLC_FRAME_FOUND;
bcs->hw.tiger.r_fcs = PPP_INITFCS;
bcs->hw.tiger.rcvbuf[0] = r_val;
bcs->hw.tiger.r_fcs = PPP_FCS (bcs->hw.tiger.r_fcs, r_val);
if (bcs->cs->debug & L1_DEB_HSCX)
debugl1(bcs->cs,"tiger read_raw: byte1(%d,%d,%d) rval %x val %x i %x",
bcs->hw.tiger.r_tot,i,j,r_val,val,
bcs->cs->hw.njet.irqstat0);
}
} else if (state == HDLC_FRAME_FOUND) {
if (val & 1) {
r_one++;
if (r_one>6) {
state=HDLC_ZERO_SEARCH;
bitcnt=0;
} else {
r_val >>= 1;
r_val |= 0x80;
bitcnt++;
}
} else {
if (r_one==6) {
r_val=0;
r_one=0;
bitcnt++;
if (bitcnt & 7) {
debugl1(bcs->cs, "tiger: frame not byte aligned");
state=HDLC_FLAG_SEARCH;
bcs->hw.tiger.r_err++;
#ifdef ERROR_STATISTIC
bcs->err_inv++;
#endif
} else {
if (bcs->cs->debug & L1_DEB_HSCX)
debugl1(bcs->cs,"tiger frame end(%d,%d): fcs(%x) i %x",
i,j,bcs->hw.tiger.r_fcs, bcs->cs->hw.njet.irqstat0);
if (bcs->hw.tiger.r_fcs == PPP_GOODFCS) {
got_frame(bcs, (bitcnt>>3)-3);
} else {
if (bcs->cs->debug) {
debugl1(bcs->cs, "tiger FCS error");
printframe(bcs->cs, bcs->hw.tiger.rcvbuf,
(bitcnt>>3)-1, "rec");
bcs->hw.tiger.r_err++;
}
#ifdef ERROR_STATISTIC
bcs->err_crc++;
#endif
}
state=HDLC_FLAG_FOUND;
}
bitcnt=0;
} else if (r_one==5) {
val >>= 1;
r_one=0;
continue;
} else {
r_val >>= 1;
r_val &= 0x7f;
bitcnt++;
}
r_one=0;
}
if ((state == HDLC_FRAME_FOUND) &&
!(bitcnt & 7)) {
if ((bitcnt>>3)>=HSCX_BUFMAX) {
debugl1(bcs->cs, "tiger: frame too big");
r_val=0;
state=HDLC_FLAG_SEARCH;
bcs->hw.tiger.r_err++;
#ifdef ERROR_STATISTIC
bcs->err_inv++;
#endif
} else {
bcs->hw.tiger.rcvbuf[(bitcnt>>3)-1] = r_val;
bcs->hw.tiger.r_fcs =
PPP_FCS (bcs->hw.tiger.r_fcs, r_val);
}
}
}
val >>= 1;
}
bcs->hw.tiger.r_tot++;
}
bcs->hw.tiger.r_state = state;
bcs->hw.tiger.r_one = r_one;
bcs->hw.tiger.r_val = r_val;
bcs->hw.tiger.r_bitcnt = bitcnt;
}
void read_tiger(struct IsdnCardState *cs) {
u_int *p;
int cnt = NETJET_DMA_RXSIZE/2;
if ((cs->hw.njet.irqstat0 & cs->hw.njet.last_is0) & NETJET_IRQM0_READ) {
debugl1(cs,"tiger warn read double dma %x/%x",
cs->hw.njet.irqstat0, cs->hw.njet.last_is0);
#ifdef ERROR_STATISTIC
if (cs->bcs[0].mode)
cs->bcs[0].err_rdo++;
if (cs->bcs[1].mode)
cs->bcs[1].err_rdo++;
#endif
return;
} else {
cs->hw.njet.last_is0 &= ~NETJET_IRQM0_READ;
cs->hw.njet.last_is0 |= (cs->hw.njet.irqstat0 & NETJET_IRQM0_READ);
}
if (cs->hw.njet.irqstat0 & NETJET_IRQM0_READ_1)
p = cs->bcs[0].hw.tiger.rec + NETJET_DMA_RXSIZE - 1;
else
p = cs->bcs[0].hw.tiger.rec + cnt - 1;
if ((cs->bcs[0].mode == L1_MODE_HDLC) || (cs->bcs[0].mode == L1_MODE_HDLC_56K))
read_raw(cs->bcs, p, cnt);
if ((cs->bcs[1].mode == L1_MODE_HDLC) || (cs->bcs[1].mode == L1_MODE_HDLC_56K))
read_raw(cs->bcs + 1, p, cnt);
cs->hw.njet.irqstat0 &= ~NETJET_IRQM0_READ;
}
static void write_raw(struct BCState *bcs, u_int *buf, int cnt);
void netjet_fill_dma(struct BCState *bcs)
{
register u_int *p, *sp;
register int cnt;
if (!bcs->tx_skb)
return;
if (bcs->cs->debug & L1_DEB_HSCX)
debugl1(bcs->cs,"tiger fill_dma1: c%d %4x", bcs->channel,
bcs->Flag);
if (test_and_set_bit(BC_FLG_BUSY, &bcs->Flag))
return;
if (bcs->mode == L1_MODE_HDLC) { // it's 64k
if (make_raw_data(bcs))
return;
}
else { // it's 56k
if (make_raw_data_56k(bcs))
return;
};
if (bcs->cs->debug & L1_DEB_HSCX)
debugl1(bcs->cs,"tiger fill_dma2: c%d %4x", bcs->channel,
bcs->Flag);
if (test_and_clear_bit(BC_FLG_NOFRAME, &bcs->Flag)) {
write_raw(bcs, bcs->hw.tiger.sendp, bcs->hw.tiger.free);
} else if (test_and_clear_bit(BC_FLG_HALF, &bcs->Flag)) {
p = bus_to_virt(inl(bcs->cs->hw.njet.base + NETJET_DMA_READ_ADR));
sp = bcs->hw.tiger.sendp;
if (p == bcs->hw.tiger.s_end)
p = bcs->hw.tiger.send -1;
if (sp == bcs->hw.tiger.s_end)
sp = bcs->hw.tiger.send -1;
cnt = p - sp;
if (cnt <0) {
write_raw(bcs, bcs->hw.tiger.sendp, bcs->hw.tiger.free);
} else {
p++;
cnt++;
if (p > bcs->hw.tiger.s_end)
p = bcs->hw.tiger.send;
p++;
cnt++;
if (p > bcs->hw.tiger.s_end)
p = bcs->hw.tiger.send;
write_raw(bcs, p, bcs->hw.tiger.free - cnt);
}
} else if (test_and_clear_bit(BC_FLG_EMPTY, &bcs->Flag)) {
p = bus_to_virt(inl(bcs->cs->hw.njet.base + NETJET_DMA_READ_ADR));
cnt = bcs->hw.tiger.s_end - p;
if (cnt < 2) {
p = bcs->hw.tiger.send + 1;
cnt = NETJET_DMA_TXSIZE/2 - 2;
} else {
p++;
p++;
if (cnt <= (NETJET_DMA_TXSIZE/2))
cnt += NETJET_DMA_TXSIZE/2;
cnt--;
cnt--;
}
write_raw(bcs, p, cnt);
}
if (bcs->cs->debug & L1_DEB_HSCX)
debugl1(bcs->cs,"tiger fill_dma3: c%d %4x", bcs->channel,
bcs->Flag);
}
static void write_raw(struct BCState *bcs, u_int *buf, int cnt) {
u_int mask, val, *p=buf;
u_int i, s_cnt;
if (cnt <= 0)
return;
if (test_bit(BC_FLG_BUSY, &bcs->Flag)) {
if (bcs->hw.tiger.sendcnt> cnt) {
s_cnt = cnt;
bcs->hw.tiger.sendcnt -= cnt;
} else {
s_cnt = bcs->hw.tiger.sendcnt;
bcs->hw.tiger.sendcnt = 0;
}
if (bcs->channel)
mask = 0xffff00ff;
else
mask = 0xffffff00;
for (i=0; i<s_cnt; i++) {
val = bcs->channel ? ((bcs->hw.tiger.sp[i] <<8) & 0xff00) :
(bcs->hw.tiger.sp[i]);
*p &= mask;
*p++ |= val;
if (p>bcs->hw.tiger.s_end)
p = bcs->hw.tiger.send;
}
bcs->hw.tiger.s_tot += s_cnt;
if (bcs->cs->debug & L1_DEB_HSCX)
debugl1(bcs->cs,"tiger write_raw: c%d %p-%p %d/%d %d %x", bcs->channel,
buf, p, s_cnt, cnt,
bcs->hw.tiger.sendcnt, bcs->cs->hw.njet.irqstat0);
if (bcs->cs->debug & L1_DEB_HSCX_FIFO)
printframe(bcs->cs, bcs->hw.tiger.sp, s_cnt, "snd");
bcs->hw.tiger.sp += s_cnt;
bcs->hw.tiger.sendp = p;
if (!bcs->hw.tiger.sendcnt) {
if (!bcs->tx_skb) {
debugl1(bcs->cs,"tiger write_raw: NULL skb s_cnt %d", s_cnt);
} else {
if (test_bit(FLG_LLI_L1WAKEUP,&bcs->st->lli.flag) &&
(PACKET_NOACK != bcs->tx_skb->pkt_type)) {
u_long flags;
spin_lock_irqsave(&bcs->aclock, flags);
bcs->ackcnt += bcs->tx_skb->len;
spin_unlock_irqrestore(&bcs->aclock, flags);
schedule_event(bcs, B_ACKPENDING);
}
dev_kfree_skb_any(bcs->tx_skb);
bcs->tx_skb = NULL;
}
test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
bcs->hw.tiger.free = cnt - s_cnt;
if (bcs->hw.tiger.free > (NETJET_DMA_TXSIZE/2))
test_and_set_bit(BC_FLG_HALF, &bcs->Flag);
else {
test_and_clear_bit(BC_FLG_HALF, &bcs->Flag);
test_and_set_bit(BC_FLG_NOFRAME, &bcs->Flag);
}
if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
netjet_fill_dma(bcs);
} else {
mask ^= 0xffffffff;
if (s_cnt < cnt) {
for (i=s_cnt; i<cnt;i++) {
*p++ |= mask;
if (p>bcs->hw.tiger.s_end)
p = bcs->hw.tiger.send;
}
if (bcs->cs->debug & L1_DEB_HSCX)
debugl1(bcs->cs, "tiger write_raw: fill rest %d",
cnt - s_cnt);
}
test_and_set_bit(B_XMTBUFREADY, &bcs->event);
schedule_work(&bcs->tqueue);
}
}
} else if (test_and_clear_bit(BC_FLG_NOFRAME, &bcs->Flag)) {
test_and_set_bit(BC_FLG_HALF, &bcs->Flag);
fill_mem(bcs, buf, cnt, bcs->channel, 0xff);
bcs->hw.tiger.free += cnt;
if (bcs->cs->debug & L1_DEB_HSCX)
debugl1(bcs->cs,"tiger write_raw: fill half");
} else if (test_and_clear_bit(BC_FLG_HALF, &bcs->Flag)) {
test_and_set_bit(BC_FLG_EMPTY, &bcs->Flag);
fill_mem(bcs, buf, cnt, bcs->channel, 0xff);
if (bcs->cs->debug & L1_DEB_HSCX)
debugl1(bcs->cs,"tiger write_raw: fill full");
}
}
void write_tiger(struct IsdnCardState *cs) {
u_int *p, cnt = NETJET_DMA_TXSIZE/2;
if ((cs->hw.njet.irqstat0 & cs->hw.njet.last_is0) & NETJET_IRQM0_WRITE) {
debugl1(cs,"tiger warn write double dma %x/%x",
cs->hw.njet.irqstat0, cs->hw.njet.last_is0);
#ifdef ERROR_STATISTIC
if (cs->bcs[0].mode)
cs->bcs[0].err_tx++;
if (cs->bcs[1].mode)
cs->bcs[1].err_tx++;
#endif
return;
} else {
cs->hw.njet.last_is0 &= ~NETJET_IRQM0_WRITE;
cs->hw.njet.last_is0 |= (cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE);
}
if (cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE_1)
p = cs->bcs[0].hw.tiger.send + NETJET_DMA_TXSIZE - 1;
else
p = cs->bcs[0].hw.tiger.send + cnt - 1;
if ((cs->bcs[0].mode == L1_MODE_HDLC) || (cs->bcs[0].mode == L1_MODE_HDLC_56K))
write_raw(cs->bcs, p, cnt);
if ((cs->bcs[1].mode == L1_MODE_HDLC) || (cs->bcs[1].mode == L1_MODE_HDLC_56K))
write_raw(cs->bcs + 1, p, cnt);
cs->hw.njet.irqstat0 &= ~NETJET_IRQM0_WRITE;
}
static void
tiger_l2l1(struct PStack *st, int pr, void *arg)
{
struct BCState *bcs = st->l1.bcs;
struct sk_buff *skb = arg;
u_long flags;
switch (pr) {
case (PH_DATA | REQUEST):
spin_lock_irqsave(&bcs->cs->lock, flags);
if (bcs->tx_skb) {
skb_queue_tail(&bcs->squeue, skb);
} else {
bcs->tx_skb = skb;
bcs->cs->BC_Send_Data(bcs);
}
spin_unlock_irqrestore(&bcs->cs->lock, flags);
break;
case (PH_PULL | INDICATION):
spin_lock_irqsave(&bcs->cs->lock, flags);
if (bcs->tx_skb) {
printk(KERN_WARNING "tiger_l2l1: this shouldn't happen\n");
} else {
bcs->tx_skb = skb;
bcs->cs->BC_Send_Data(bcs);
}
spin_unlock_irqrestore(&bcs->cs->lock, flags);
break;
case (PH_PULL | REQUEST):
if (!bcs->tx_skb) {
test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
} else
test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
break;
case (PH_ACTIVATE | REQUEST):
spin_lock_irqsave(&bcs->cs->lock, flags);
test_and_set_bit(BC_FLG_ACTIV, &bcs->Flag);
mode_tiger(bcs, st->l1.mode, st->l1.bc);
/* 2001/10/04 Christoph Ersfeld, Formula-n Europe AG */
spin_unlock_irqrestore(&bcs->cs->lock, flags);
bcs->cs->cardmsg(bcs->cs, MDL_BC_ASSIGN, (void *)(&st->l1.bc));
l1_msg_b(st, pr, arg);
break;
case (PH_DEACTIVATE | REQUEST):
/* 2001/10/04 Christoph Ersfeld, Formula-n Europe AG */
bcs->cs->cardmsg(bcs->cs, MDL_BC_RELEASE, (void *)(&st->l1.bc));
l1_msg_b(st, pr, arg);
break;
case (PH_DEACTIVATE | CONFIRM):
spin_lock_irqsave(&bcs->cs->lock, flags);
test_and_clear_bit(BC_FLG_ACTIV, &bcs->Flag);
test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
mode_tiger(bcs, 0, st->l1.bc);
spin_unlock_irqrestore(&bcs->cs->lock, flags);
st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL);
break;
}
}
static void
close_tigerstate(struct BCState *bcs)
{
mode_tiger(bcs, 0, bcs->channel);
if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) {
kfree(bcs->hw.tiger.rcvbuf);
bcs->hw.tiger.rcvbuf = NULL;
kfree(bcs->hw.tiger.sendbuf);
bcs->hw.tiger.sendbuf = NULL;
skb_queue_purge(&bcs->rqueue);
skb_queue_purge(&bcs->squeue);
if (bcs->tx_skb) {
dev_kfree_skb_any(bcs->tx_skb);
bcs->tx_skb = NULL;
test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
}
}
}
static int
open_tigerstate(struct IsdnCardState *cs, struct BCState *bcs)
{
if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) {
if (!(bcs->hw.tiger.rcvbuf = kmalloc(HSCX_BUFMAX, GFP_ATOMIC))) {
printk(KERN_WARNING
"HiSax: No memory for tiger.rcvbuf\n");
return (1);
}
if (!(bcs->hw.tiger.sendbuf = kmalloc(RAW_BUFMAX, GFP_ATOMIC))) {
printk(KERN_WARNING
"HiSax: No memory for tiger.sendbuf\n");
return (1);
}
skb_queue_head_init(&bcs->rqueue);
skb_queue_head_init(&bcs->squeue);
}
bcs->tx_skb = NULL;
bcs->hw.tiger.sendcnt = 0;
test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
bcs->event = 0;
bcs->tx_cnt = 0;
return (0);
}
static int
setstack_tiger(struct PStack *st, struct BCState *bcs)
{
bcs->channel = st->l1.bc;
if (open_tigerstate(st->l1.hardware, bcs))
return (-1);
st->l1.bcs = bcs;
st->l2.l2l1 = tiger_l2l1;
setstack_manager(st);
bcs->st = st;
setstack_l1_B(st);
return (0);
}
void
inittiger(struct IsdnCardState *cs)
{
if (!(cs->bcs[0].hw.tiger.send = kmalloc(NETJET_DMA_TXSIZE * sizeof(unsigned int),
GFP_KERNEL | GFP_DMA))) {
printk(KERN_WARNING
"HiSax: No memory for tiger.send\n");
return;
}
cs->bcs[0].hw.tiger.s_irq = cs->bcs[0].hw.tiger.send + NETJET_DMA_TXSIZE/2 - 1;
cs->bcs[0].hw.tiger.s_end = cs->bcs[0].hw.tiger.send + NETJET_DMA_TXSIZE - 1;
cs->bcs[1].hw.tiger.send = cs->bcs[0].hw.tiger.send;
cs->bcs[1].hw.tiger.s_irq = cs->bcs[0].hw.tiger.s_irq;
cs->bcs[1].hw.tiger.s_end = cs->bcs[0].hw.tiger.s_end;
memset(cs->bcs[0].hw.tiger.send, 0xff, NETJET_DMA_TXSIZE * sizeof(unsigned int));
debugl1(cs, "tiger: send buf %p - %p", cs->bcs[0].hw.tiger.send,
cs->bcs[0].hw.tiger.send + NETJET_DMA_TXSIZE - 1);
outl(virt_to_bus(cs->bcs[0].hw.tiger.send),
cs->hw.njet.base + NETJET_DMA_READ_START);
outl(virt_to_bus(cs->bcs[0].hw.tiger.s_irq),
cs->hw.njet.base + NETJET_DMA_READ_IRQ);
outl(virt_to_bus(cs->bcs[0].hw.tiger.s_end),
cs->hw.njet.base + NETJET_DMA_READ_END);
if (!(cs->bcs[0].hw.tiger.rec = kmalloc(NETJET_DMA_RXSIZE * sizeof(unsigned int),
GFP_KERNEL | GFP_DMA))) {
printk(KERN_WARNING
"HiSax: No memory for tiger.rec\n");
return;
}
debugl1(cs, "tiger: rec buf %p - %p", cs->bcs[0].hw.tiger.rec,
cs->bcs[0].hw.tiger.rec + NETJET_DMA_RXSIZE - 1);
cs->bcs[1].hw.tiger.rec = cs->bcs[0].hw.tiger.rec;
memset(cs->bcs[0].hw.tiger.rec, 0xff, NETJET_DMA_RXSIZE * sizeof(unsigned int));
outl(virt_to_bus(cs->bcs[0].hw.tiger.rec),
cs->hw.njet.base + NETJET_DMA_WRITE_START);
outl(virt_to_bus(cs->bcs[0].hw.tiger.rec + NETJET_DMA_RXSIZE/2 - 1),
cs->hw.njet.base + NETJET_DMA_WRITE_IRQ);
outl(virt_to_bus(cs->bcs[0].hw.tiger.rec + NETJET_DMA_RXSIZE - 1),
cs->hw.njet.base + NETJET_DMA_WRITE_END);
debugl1(cs, "tiger: dmacfg %x/%x pulse=%d",
inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR),
inl(cs->hw.njet.base + NETJET_DMA_READ_ADR),
bytein(cs->hw.njet.base + NETJET_PULSE_CNT));
cs->hw.njet.last_is0 = 0;
cs->bcs[0].BC_SetStack = setstack_tiger;
cs->bcs[1].BC_SetStack = setstack_tiger;
cs->bcs[0].BC_Close = close_tigerstate;
cs->bcs[1].BC_Close = close_tigerstate;
}
static void
releasetiger(struct IsdnCardState *cs)
{
kfree(cs->bcs[0].hw.tiger.send);
cs->bcs[0].hw.tiger.send = NULL;
cs->bcs[1].hw.tiger.send = NULL;
kfree(cs->bcs[0].hw.tiger.rec);
cs->bcs[0].hw.tiger.rec = NULL;
cs->bcs[1].hw.tiger.rec = NULL;
}
void
release_io_netjet(struct IsdnCardState *cs)
{
byteout(cs->hw.njet.base + NETJET_IRQMASK0, 0);
byteout(cs->hw.njet.base + NETJET_IRQMASK1, 0);
releasetiger(cs);
release_region(cs->hw.njet.base, 256);
}
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