Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 265 insertions, 0 deletions

diff --git a/drivers/atm/uPD98402.c b/drivers/atm/uPD98402.c
new file mode 100644
index 000000000000..9504cce51bfb
--- /dev/null
+++ b/drivers/atm/uPD98402.c
@@ -0,0 +1,265 @@
+/* drivers/atm/uPD98402.c - NEC uPD98402 (PHY) declarations */
+ 
+/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
+ 
+
+#include <linux/module.h>
+#include <linux/sched.h> /* for jiffies */
+#include <linux/mm.h>
+#include <linux/errno.h>
+#include <linux/atmdev.h>
+#include <linux/sonet.h>
+#include <linux/init.h>
+#include <asm/uaccess.h>
+#include <asm/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->dev_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 */