Linux-2.6.12-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!
diff --git a/drivers/atm/suni.c b/drivers/atm/suni.c
new file mode 100644
index 0000000..06817de
--- /dev/null
+++ b/drivers/atm/suni.c
@@ -0,0 +1,311 @@
+/* drivers/atm/suni.c - PMC PM5346 SUNI (PHY) driver */
+
+/* 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
+
+
+struct suni_priv {
+ struct k_sonet_stats sonet_stats; /* link diagnostics */
+ int loop_mode; /* loopback mode */
+ struct atm_dev *dev; /* device back-pointer */
+ struct suni_priv *next; /* next SUNI */
+};
+
+
+#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;
+
+ control = GET(MCT) & ~(SUNI_MCT_DLE | SUNI_MCT_LLE);
+ switch (mode) {
+ case ATM_LM_NONE:
+ break;
+ case ATM_LM_LOC_PHY:
+ control |= SUNI_MCT_DLE;
+ break;
+ case ATM_LM_RMT_PHY:
+ control |= SUNI_MCT_LLE;
+ break;
+ default:
+ return -EINVAL;
+ }
+ PUT(control,MCT);
+ PRIV(dev)->loop_mode = mode;
+ return 0;
+}
+
+
+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 (arg != SONET_FRAME_SONET) return -EINVAL;
+ return 0;
+ case SONET_GETFRAMING:
+ return put_user(SONET_FRAME_SONET,(int __user *)arg) ?
+ -EFAULT : 0;
+ case SONET_GETFRSENSE:
+ return -EINVAL;
+ 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_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;
+
+ if (!(dev->phy_data = kmalloc(sizeof(struct suni_priv),GFP_KERNEL)))
+ return -ENOMEM;
+
+ PRIV(dev)->dev = dev;
+ 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;
+
+ mri = GET(MRI); /* reset SUNI */
+ PUT(mri | SUNI_MRI_RESET,MRI);
+ PUT(mri,MRI);
+ PUT((GET(MT) & SUNI_MT_DS27_53),MT); /* disable all tests */
+ REG_CHANGE(SUNI_TPOP_APM_S,SUNI_TPOP_APM_S_SHIFT,SUNI_TPOP_S_SONET,
+ TPOP_APM); /* use SONET */
+ 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");