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path: root/drivers/atm/uPD98402.c
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Diffstat (limited to 'drivers/atm/uPD98402.c')
-rw-r--r--drivers/atm/uPD98402.c266
1 files changed, 0 insertions, 266 deletions
diff --git a/drivers/atm/uPD98402.c b/drivers/atm/uPD98402.c
deleted file mode 100644
index 239852d85558..000000000000
--- a/drivers/atm/uPD98402.c
+++ /dev/null
@@ -1,266 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/* drivers/atm/uPD98402.c - NEC uPD98402 (PHY) declarations */
-
-/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
-
-
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/errno.h>
-#include <linux/atmdev.h>
-#include <linux/sonet.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/uaccess.h>
-#include <linux/atomic.h>
-
-#include "uPD98402.h"
-
-
-#if 0
-#define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
-#else
-#define DPRINTK(format,args...)
-#endif
-
-
-struct uPD98402_priv {
- struct k_sonet_stats sonet_stats;/* link diagnostics */
- unsigned char framing; /* SONET/SDH framing */
- int loop_mode; /* loopback mode */
- spinlock_t lock;
-};
-
-
-#define PRIV(dev) ((struct uPD98402_priv *) dev->phy_data)
-
-#define PUT(val,reg) dev->ops->phy_put(dev,val,uPD98402_##reg)
-#define GET(reg) dev->ops->phy_get(dev,uPD98402_##reg)
-
-
-static int fetch_stats(struct atm_dev *dev,struct sonet_stats __user *arg,int zero)
-{
- struct sonet_stats tmp;
- int error = 0;
-
- atomic_add(GET(HECCT),&PRIV(dev)->sonet_stats.uncorr_hcs);
- sonet_copy_stats(&PRIV(dev)->sonet_stats,&tmp);
- if (arg) error = copy_to_user(arg,&tmp,sizeof(tmp));
- if (zero && !error) {
- /* unused fields are reported as -1, but we must not "adjust"
- them */
- tmp.corr_hcs = tmp.tx_cells = tmp.rx_cells = 0;
- sonet_subtract_stats(&PRIV(dev)->sonet_stats,&tmp);
- }
- return error ? -EFAULT : 0;
-}
-
-
-static int set_framing(struct atm_dev *dev,unsigned char framing)
-{
- static const unsigned char sonet[] = { 1,2,3,0 };
- static const unsigned char sdh[] = { 1,0,0,2 };
- const char *set;
- unsigned long flags;
-
- switch (framing) {
- case SONET_FRAME_SONET:
- set = sonet;
- break;
- case SONET_FRAME_SDH:
- set = sdh;
- break;
- default:
- return -EINVAL;
- }
- spin_lock_irqsave(&PRIV(dev)->lock, flags);
- PUT(set[0],C11T);
- PUT(set[1],C12T);
- PUT(set[2],C13T);
- PUT((GET(MDR) & ~uPD98402_MDR_SS_MASK) | (set[3] <<
- uPD98402_MDR_SS_SHIFT),MDR);
- spin_unlock_irqrestore(&PRIV(dev)->lock, flags);
- return 0;
-}
-
-
-static int get_sense(struct atm_dev *dev,u8 __user *arg)
-{
- unsigned long flags;
- unsigned char s[3];
-
- spin_lock_irqsave(&PRIV(dev)->lock, flags);
- s[0] = GET(C11R);
- s[1] = GET(C12R);
- s[2] = GET(C13R);
- spin_unlock_irqrestore(&PRIV(dev)->lock, flags);
- return (put_user(s[0], arg) || put_user(s[1], arg+1) ||
- put_user(s[2], arg+2) || put_user(0xff, arg+3) ||
- put_user(0xff, arg+4) || put_user(0xff, arg+5)) ? -EFAULT : 0;
-}
-
-
-static int set_loopback(struct atm_dev *dev,int mode)
-{
- unsigned char mode_reg;
-
- mode_reg = GET(MDR) & ~(uPD98402_MDR_TPLP | uPD98402_MDR_ALP |
- uPD98402_MDR_RPLP);
- switch (__ATM_LM_XTLOC(mode)) {
- case __ATM_LM_NONE:
- break;
- case __ATM_LM_PHY:
- mode_reg |= uPD98402_MDR_TPLP;
- break;
- case __ATM_LM_ATM:
- mode_reg |= uPD98402_MDR_ALP;
- break;
- default:
- return -EINVAL;
- }
- switch (__ATM_LM_XTRMT(mode)) {
- case __ATM_LM_NONE:
- break;
- case __ATM_LM_PHY:
- mode_reg |= uPD98402_MDR_RPLP;
- break;
- default:
- return -EINVAL;
- }
- PUT(mode_reg,MDR);
- PRIV(dev)->loop_mode = mode;
- return 0;
-}
-
-
-static int uPD98402_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_SETFRAMING:
- return set_framing(dev, (int)(unsigned long)arg);
- case SONET_GETFRAMING:
- return put_user(PRIV(dev)->framing,(int __user *)arg) ?
- -EFAULT : 0;
- case SONET_GETFRSENSE:
- return get_sense(dev,arg);
- case ATM_SETLOOP:
- 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_LOC_ATM |
- ATM_LM_RMT_PHY,(int __user *)arg) ? -EFAULT : 0;
- default:
- return -ENOIOCTLCMD;
- }
-}
-
-
-#define ADD_LIMITED(s,v) \
- { atomic_add(GET(v),&PRIV(dev)->sonet_stats.s); \
- if (atomic_read(&PRIV(dev)->sonet_stats.s) < 0) \
- atomic_set(&PRIV(dev)->sonet_stats.s,INT_MAX); }
-
-
-static void stat_event(struct atm_dev *dev)
-{
- unsigned char events;
-
- events = GET(PCR);
- if (events & uPD98402_PFM_PFEB) ADD_LIMITED(path_febe,PFECB);
- if (events & uPD98402_PFM_LFEB) ADD_LIMITED(line_febe,LECCT);
- if (events & uPD98402_PFM_B3E) ADD_LIMITED(path_bip,B3ECT);
- if (events & uPD98402_PFM_B2E) ADD_LIMITED(line_bip,B2ECT);
- if (events & uPD98402_PFM_B1E) ADD_LIMITED(section_bip,B1ECT);
-}
-
-
-#undef ADD_LIMITED
-
-
-static void uPD98402_int(struct atm_dev *dev)
-{
- static unsigned long silence = 0;
- unsigned char reason;
-
- while ((reason = GET(PICR))) {
- if (reason & uPD98402_INT_LOS)
- printk(KERN_NOTICE "%s(itf %d): signal lost\n",
- dev->type,dev->number);
- if (reason & uPD98402_INT_PFM) stat_event(dev);
- if (reason & uPD98402_INT_PCO) {
- (void) GET(PCOCR); /* clear interrupt cause */
- atomic_add(GET(HECCT),
- &PRIV(dev)->sonet_stats.uncorr_hcs);
- }
- if ((reason & uPD98402_INT_RFO) &&
- (time_after(jiffies, silence) || silence == 0)) {
- printk(KERN_WARNING "%s(itf %d): uPD98402 receive "
- "FIFO overflow\n",dev->type,dev->number);
- silence = (jiffies+HZ/2)|1;
- }
- }
-}
-
-
-static int uPD98402_start(struct atm_dev *dev)
-{
- DPRINTK("phy_start\n");
- if (!(dev->phy_data = kmalloc(sizeof(struct uPD98402_priv),GFP_KERNEL)))
- return -ENOMEM;
- spin_lock_init(&PRIV(dev)->lock);
- memset(&PRIV(dev)->sonet_stats,0,sizeof(struct k_sonet_stats));
- (void) GET(PCR); /* clear performance events */
- PUT(uPD98402_PFM_FJ,PCMR); /* ignore frequency adj */
- (void) GET(PCOCR); /* clear overflows */
- PUT(~uPD98402_PCO_HECC,PCOMR);
- (void) GET(PICR); /* clear interrupts */
- PUT(~(uPD98402_INT_PFM | uPD98402_INT_ALM | uPD98402_INT_RFO |
- uPD98402_INT_LOS),PIMR); /* enable them */
- (void) fetch_stats(dev,NULL,1); /* clear kernel counters */
- atomic_set(&PRIV(dev)->sonet_stats.corr_hcs,-1);
- atomic_set(&PRIV(dev)->sonet_stats.tx_cells,-1);
- atomic_set(&PRIV(dev)->sonet_stats.rx_cells,-1);
- return 0;
-}
-
-
-static int uPD98402_stop(struct atm_dev *dev)
-{
- /* let SAR driver worry about stopping interrupts */
- kfree(PRIV(dev));
- return 0;
-}
-
-
-static const struct atmphy_ops uPD98402_ops = {
- .start = uPD98402_start,
- .ioctl = uPD98402_ioctl,
- .interrupt = uPD98402_int,
- .stop = uPD98402_stop,
-};
-
-
-int uPD98402_init(struct atm_dev *dev)
-{
-DPRINTK("phy_init\n");
- dev->phy = &uPD98402_ops;
- return 0;
-}
-
-
-MODULE_LICENSE("GPL");
-
-EXPORT_SYMBOL(uPD98402_init);
-
-static __init int uPD98402_module_init(void)
-{
- return 0;
-}
-module_init(uPD98402_module_init);
-/* module_exit not defined so not unloadable */
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