392 lines
9.8 KiB
C
392 lines
9.8 KiB
C
/*
|
|
* drivers/atm/suni.c - S/UNI PHY driver
|
|
*
|
|
* Supports the following:
|
|
* PMC PM5346 S/UNI LITE
|
|
* PMC PM5350 S/UNI 155 ULTRA
|
|
* PMC PM5355 S/UNI 622
|
|
*/
|
|
|
|
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/jiffies.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/atmdev.h>
|
|
#include <linux/sonet.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/timer.h>
|
|
#include <linux/init.h>
|
|
#include <linux/capability.h>
|
|
#include <linux/atm_suni.h>
|
|
#include <asm/system.h>
|
|
#include <asm/param.h>
|
|
#include <asm/uaccess.h>
|
|
#include <asm/atomic.h>
|
|
|
|
#include "suni.h"
|
|
|
|
|
|
#if 0
|
|
#define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
|
|
#else
|
|
#define DPRINTK(format,args...)
|
|
#endif
|
|
|
|
#define PRIV(dev) ((struct suni_priv *) dev->phy_data)
|
|
|
|
#define PUT(val,reg) dev->ops->phy_put(dev,val,SUNI_##reg)
|
|
#define GET(reg) dev->ops->phy_get(dev,SUNI_##reg)
|
|
#define REG_CHANGE(mask,shift,value,reg) \
|
|
PUT((GET(reg) & ~(mask)) | ((value) << (shift)),reg)
|
|
|
|
|
|
static struct timer_list poll_timer;
|
|
static struct suni_priv *sunis = NULL;
|
|
static DEFINE_SPINLOCK(sunis_lock);
|
|
|
|
|
|
#define ADD_LIMITED(s,v) \
|
|
atomic_add((v),&stats->s); \
|
|
if (atomic_read(&stats->s) < 0) atomic_set(&stats->s,INT_MAX);
|
|
|
|
|
|
static void suni_hz(unsigned long from_timer)
|
|
{
|
|
struct suni_priv *walk;
|
|
struct atm_dev *dev;
|
|
struct k_sonet_stats *stats;
|
|
|
|
for (walk = sunis; walk; walk = walk->next) {
|
|
dev = walk->dev;
|
|
stats = &walk->sonet_stats;
|
|
PUT(0,MRI); /* latch counters */
|
|
udelay(1);
|
|
ADD_LIMITED(section_bip,(GET(RSOP_SBL) & 0xff) |
|
|
((GET(RSOP_SBM) & 0xff) << 8));
|
|
ADD_LIMITED(line_bip,(GET(RLOP_LBL) & 0xff) |
|
|
((GET(RLOP_LB) & 0xff) << 8) |
|
|
((GET(RLOP_LBM) & 0xf) << 16));
|
|
ADD_LIMITED(path_bip,(GET(RPOP_PBL) & 0xff) |
|
|
((GET(RPOP_PBM) & 0xff) << 8));
|
|
ADD_LIMITED(line_febe,(GET(RLOP_LFL) & 0xff) |
|
|
((GET(RLOP_LF) & 0xff) << 8) |
|
|
((GET(RLOP_LFM) & 0xf) << 16));
|
|
ADD_LIMITED(path_febe,(GET(RPOP_PFL) & 0xff) |
|
|
((GET(RPOP_PFM) & 0xff) << 8));
|
|
ADD_LIMITED(corr_hcs,GET(RACP_CHEC) & 0xff);
|
|
ADD_LIMITED(uncorr_hcs,GET(RACP_UHEC) & 0xff);
|
|
ADD_LIMITED(rx_cells,(GET(RACP_RCCL) & 0xff) |
|
|
((GET(RACP_RCC) & 0xff) << 8) |
|
|
((GET(RACP_RCCM) & 7) << 16));
|
|
ADD_LIMITED(tx_cells,(GET(TACP_TCCL) & 0xff) |
|
|
((GET(TACP_TCC) & 0xff) << 8) |
|
|
((GET(TACP_TCCM) & 7) << 16));
|
|
}
|
|
if (from_timer) mod_timer(&poll_timer,jiffies+HZ);
|
|
}
|
|
|
|
|
|
#undef ADD_LIMITED
|
|
|
|
|
|
static int fetch_stats(struct atm_dev *dev,struct sonet_stats __user *arg,int zero)
|
|
{
|
|
struct sonet_stats tmp;
|
|
int error = 0;
|
|
|
|
sonet_copy_stats(&PRIV(dev)->sonet_stats,&tmp);
|
|
if (arg) error = copy_to_user(arg,&tmp,sizeof(tmp));
|
|
if (zero && !error) sonet_subtract_stats(&PRIV(dev)->sonet_stats,&tmp);
|
|
return error ? -EFAULT : 0;
|
|
}
|
|
|
|
|
|
#define HANDLE_FLAG(flag,reg,bit) \
|
|
if (todo & flag) { \
|
|
if (set) PUT(GET(reg) | bit,reg); \
|
|
else PUT(GET(reg) & ~bit,reg); \
|
|
todo &= ~flag; \
|
|
}
|
|
|
|
|
|
static int change_diag(struct atm_dev *dev,void __user *arg,int set)
|
|
{
|
|
int todo;
|
|
|
|
if (get_user(todo,(int __user *)arg)) return -EFAULT;
|
|
HANDLE_FLAG(SONET_INS_SBIP,TSOP_DIAG,SUNI_TSOP_DIAG_DBIP8);
|
|
HANDLE_FLAG(SONET_INS_LBIP,TLOP_DIAG,SUNI_TLOP_DIAG_DBIP);
|
|
HANDLE_FLAG(SONET_INS_PBIP,TPOP_CD,SUNI_TPOP_DIAG_DB3);
|
|
HANDLE_FLAG(SONET_INS_FRAME,RSOP_CIE,SUNI_RSOP_CIE_FOOF);
|
|
HANDLE_FLAG(SONET_INS_LAIS,TSOP_CTRL,SUNI_TSOP_CTRL_LAIS);
|
|
HANDLE_FLAG(SONET_INS_PAIS,TPOP_CD,SUNI_TPOP_DIAG_PAIS);
|
|
HANDLE_FLAG(SONET_INS_LOS,TSOP_DIAG,SUNI_TSOP_DIAG_DLOS);
|
|
HANDLE_FLAG(SONET_INS_HCS,TACP_CS,SUNI_TACP_CS_DHCS);
|
|
return put_user(todo,(int __user *)arg) ? -EFAULT : 0;
|
|
}
|
|
|
|
|
|
#undef HANDLE_FLAG
|
|
|
|
|
|
static int get_diag(struct atm_dev *dev,void __user *arg)
|
|
{
|
|
int set;
|
|
|
|
set = 0;
|
|
if (GET(TSOP_DIAG) & SUNI_TSOP_DIAG_DBIP8) set |= SONET_INS_SBIP;
|
|
if (GET(TLOP_DIAG) & SUNI_TLOP_DIAG_DBIP) set |= SONET_INS_LBIP;
|
|
if (GET(TPOP_CD) & SUNI_TPOP_DIAG_DB3) set |= SONET_INS_PBIP;
|
|
/* SONET_INS_FRAME is one-shot only */
|
|
if (GET(TSOP_CTRL) & SUNI_TSOP_CTRL_LAIS) set |= SONET_INS_LAIS;
|
|
if (GET(TPOP_CD) & SUNI_TPOP_DIAG_PAIS) set |= SONET_INS_PAIS;
|
|
if (GET(TSOP_DIAG) & SUNI_TSOP_DIAG_DLOS) set |= SONET_INS_LOS;
|
|
if (GET(TACP_CS) & SUNI_TACP_CS_DHCS) set |= SONET_INS_HCS;
|
|
return put_user(set,(int __user *)arg) ? -EFAULT : 0;
|
|
}
|
|
|
|
|
|
static int set_loopback(struct atm_dev *dev,int mode)
|
|
{
|
|
unsigned char control;
|
|
int reg, dle, lle;
|
|
|
|
if (PRIV(dev)->type == SUNI_MRI_TYPE_PM5355) {
|
|
reg = SUNI_MCM;
|
|
dle = SUNI_MCM_DLE;
|
|
lle = SUNI_MCM_LLE;
|
|
} else {
|
|
reg = SUNI_MCT;
|
|
dle = SUNI_MCT_DLE;
|
|
lle = SUNI_MCT_LLE;
|
|
}
|
|
|
|
control = dev->ops->phy_get(dev, reg) & ~(dle | lle);
|
|
switch (mode) {
|
|
case ATM_LM_NONE:
|
|
break;
|
|
case ATM_LM_LOC_PHY:
|
|
control |= dle;
|
|
break;
|
|
case ATM_LM_RMT_PHY:
|
|
control |= lle;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
dev->ops->phy_put(dev, control, reg);
|
|
PRIV(dev)->loop_mode = mode;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* SONET vs. SDH Configuration
|
|
*
|
|
* Z0INS (register 0x06): 0 for SONET, 1 for SDH
|
|
* ENSS (register 0x3D): 0 for SONET, 1 for SDH
|
|
* LEN16 (register 0x28): 0 for SONET, 1 for SDH (n/a for S/UNI 155 QUAD)
|
|
* LEN16 (register 0x50): 0 for SONET, 1 for SDH (n/a for S/UNI 155 QUAD)
|
|
* S[1:0] (register 0x46): 00 for SONET, 10 for SDH
|
|
*/
|
|
|
|
static int set_sonet(struct atm_dev *dev)
|
|
{
|
|
if (PRIV(dev)->type == SUNI_MRI_TYPE_PM5355) {
|
|
PUT(GET(RPOP_RC) & ~SUNI_RPOP_RC_ENSS, RPOP_RC);
|
|
PUT(GET(SSTB_CTRL) & ~SUNI_SSTB_CTRL_LEN16, SSTB_CTRL);
|
|
PUT(GET(SPTB_CTRL) & ~SUNI_SPTB_CTRL_LEN16, SPTB_CTRL);
|
|
}
|
|
|
|
REG_CHANGE(SUNI_TPOP_APM_S, SUNI_TPOP_APM_S_SHIFT,
|
|
SUNI_TPOP_S_SONET, TPOP_APM);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int set_sdh(struct atm_dev *dev)
|
|
{
|
|
if (PRIV(dev)->type == SUNI_MRI_TYPE_PM5355) {
|
|
PUT(GET(RPOP_RC) | SUNI_RPOP_RC_ENSS, RPOP_RC);
|
|
PUT(GET(SSTB_CTRL) | SUNI_SSTB_CTRL_LEN16, SSTB_CTRL);
|
|
PUT(GET(SPTB_CTRL) | SUNI_SPTB_CTRL_LEN16, SPTB_CTRL);
|
|
}
|
|
|
|
REG_CHANGE(SUNI_TPOP_APM_S, SUNI_TPOP_APM_S_SHIFT,
|
|
SUNI_TPOP_S_SDH, TPOP_APM);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int get_framing(struct atm_dev *dev, void __user *arg)
|
|
{
|
|
int framing;
|
|
unsigned char s;
|
|
|
|
|
|
s = (GET(TPOP_APM) & SUNI_TPOP_APM_S) >> SUNI_TPOP_APM_S_SHIFT;
|
|
if (s == SUNI_TPOP_S_SONET)
|
|
framing = SONET_FRAME_SONET;
|
|
else
|
|
framing = SONET_FRAME_SDH;
|
|
|
|
return put_user(framing, (int __user *) arg) ? -EFAULT : 0;
|
|
}
|
|
|
|
static int set_framing(struct atm_dev *dev, void __user *arg)
|
|
{
|
|
int mode;
|
|
|
|
if (get_user(mode, (int __user *) arg))
|
|
return -EFAULT;
|
|
|
|
if (mode == SONET_FRAME_SONET)
|
|
return set_sonet(dev);
|
|
else if (mode == SONET_FRAME_SDH)
|
|
return set_sdh(dev);
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
|
|
static int suni_ioctl(struct atm_dev *dev,unsigned int cmd,void __user *arg)
|
|
{
|
|
switch (cmd) {
|
|
case SONET_GETSTATZ:
|
|
case SONET_GETSTAT:
|
|
return fetch_stats(dev, arg, cmd == SONET_GETSTATZ);
|
|
case SONET_SETDIAG:
|
|
return change_diag(dev,arg,1);
|
|
case SONET_CLRDIAG:
|
|
return change_diag(dev,arg,0);
|
|
case SONET_GETDIAG:
|
|
return get_diag(dev,arg);
|
|
case SONET_SETFRAMING:
|
|
if (!capable(CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
return set_framing(dev, arg);
|
|
case SONET_GETFRAMING:
|
|
return get_framing(dev, arg);
|
|
case SONET_GETFRSENSE:
|
|
return -EINVAL;
|
|
case ATM_SETLOOP:
|
|
if (!capable(CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
return set_loopback(dev,(int)(unsigned long)arg);
|
|
case ATM_GETLOOP:
|
|
return put_user(PRIV(dev)->loop_mode,(int __user *)arg) ?
|
|
-EFAULT : 0;
|
|
case ATM_QUERYLOOP:
|
|
return put_user(ATM_LM_LOC_PHY | ATM_LM_RMT_PHY,
|
|
(int __user *) arg) ? -EFAULT : 0;
|
|
default:
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
}
|
|
|
|
|
|
static void poll_los(struct atm_dev *dev)
|
|
{
|
|
dev->signal = GET(RSOP_SIS) & SUNI_RSOP_SIS_LOSV ? ATM_PHY_SIG_LOST :
|
|
ATM_PHY_SIG_FOUND;
|
|
}
|
|
|
|
|
|
static void suni_int(struct atm_dev *dev)
|
|
{
|
|
poll_los(dev);
|
|
printk(KERN_NOTICE "%s(itf %d): signal %s\n",dev->type,dev->number,
|
|
dev->signal == ATM_PHY_SIG_LOST ? "lost" : "detected again");
|
|
}
|
|
|
|
|
|
static int suni_start(struct atm_dev *dev)
|
|
{
|
|
unsigned long flags;
|
|
int first;
|
|
|
|
spin_lock_irqsave(&sunis_lock,flags);
|
|
first = !sunis;
|
|
PRIV(dev)->next = sunis;
|
|
sunis = PRIV(dev);
|
|
spin_unlock_irqrestore(&sunis_lock,flags);
|
|
memset(&PRIV(dev)->sonet_stats,0,sizeof(struct k_sonet_stats));
|
|
PUT(GET(RSOP_CIE) | SUNI_RSOP_CIE_LOSE,RSOP_CIE);
|
|
/* interrupt on loss of signal */
|
|
poll_los(dev); /* ... and clear SUNI interrupts */
|
|
if (dev->signal == ATM_PHY_SIG_LOST)
|
|
printk(KERN_WARNING "%s(itf %d): no signal\n",dev->type,
|
|
dev->number);
|
|
PRIV(dev)->loop_mode = ATM_LM_NONE;
|
|
suni_hz(0); /* clear SUNI counters */
|
|
(void) fetch_stats(dev,NULL,1); /* clear kernel counters */
|
|
if (first) {
|
|
init_timer(&poll_timer);
|
|
poll_timer.expires = jiffies+HZ;
|
|
poll_timer.function = suni_hz;
|
|
poll_timer.data = 1;
|
|
#if 0
|
|
printk(KERN_DEBUG "[u] p=0x%lx,n=0x%lx\n",(unsigned long) poll_timer.list.prev,
|
|
(unsigned long) poll_timer.list.next);
|
|
#endif
|
|
add_timer(&poll_timer);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int suni_stop(struct atm_dev *dev)
|
|
{
|
|
struct suni_priv **walk;
|
|
unsigned long flags;
|
|
|
|
/* let SAR driver worry about stopping interrupts */
|
|
spin_lock_irqsave(&sunis_lock,flags);
|
|
for (walk = &sunis; *walk != PRIV(dev);
|
|
walk = &PRIV((*walk)->dev)->next);
|
|
*walk = PRIV((*walk)->dev)->next;
|
|
if (!sunis) del_timer_sync(&poll_timer);
|
|
spin_unlock_irqrestore(&sunis_lock,flags);
|
|
kfree(PRIV(dev));
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static const struct atmphy_ops suni_ops = {
|
|
.start = suni_start,
|
|
.ioctl = suni_ioctl,
|
|
.interrupt = suni_int,
|
|
.stop = suni_stop,
|
|
};
|
|
|
|
|
|
int suni_init(struct atm_dev *dev)
|
|
{
|
|
unsigned char mri;
|
|
|
|
if (!(dev->phy_data = kmalloc(sizeof(struct suni_priv),GFP_KERNEL)))
|
|
return -ENOMEM;
|
|
PRIV(dev)->dev = dev;
|
|
|
|
mri = GET(MRI); /* reset SUNI */
|
|
PRIV(dev)->type = (mri & SUNI_MRI_TYPE) >> SUNI_MRI_TYPE_SHIFT;
|
|
PUT(mri | SUNI_MRI_RESET,MRI);
|
|
PUT(mri,MRI);
|
|
PUT((GET(MT) & SUNI_MT_DS27_53),MT); /* disable all tests */
|
|
set_sonet(dev);
|
|
REG_CHANGE(SUNI_TACP_IUCHP_CLP,0,SUNI_TACP_IUCHP_CLP,
|
|
TACP_IUCHP); /* idle cells */
|
|
PUT(SUNI_IDLE_PATTERN,TACP_IUCPOP);
|
|
dev->phy = &suni_ops;
|
|
|
|
return 0;
|
|
}
|
|
|
|
EXPORT_SYMBOL(suni_init);
|
|
|
|
MODULE_LICENSE("GPL");
|