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Date: Tue, 17 Jun 2008 09:16:15 -0400
From: "chas williams - CONTRACTOR" <chas@....nrl.navy.mil>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net
Subject: [PATCH net-next-2.6 2/6] atm: [suni] add support for setting loopback and framing modes
commit 77203e01be64419bcdfa7f70ea70d39eecb2eb3b
Author: Chas Williams - CONTRACTOR <chas@...ax.cmf.nrl.navy.mil>
Date: Sat Jun 14 17:31:20 2008 -0400
atm: [suni] add support for setting loopback and framing modes
Signed-off-by: Chas Williams <chas@....nrl.navy.mil>
diff --git a/drivers/atm/suni.c b/drivers/atm/suni.c
index 6097f68..7872977 100644
--- a/drivers/atm/suni.c
+++ b/drivers/atm/suni.c
@@ -1,8 +1,14 @@
-/* drivers/atm/suni.c - PMC PM5346 SUNI (PHY) driver */
+/*
+ * 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>
@@ -146,25 +152,105 @@ static int get_diag(struct atm_dev *dev,void __user *arg)
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 = GET(MCT) & ~(SUNI_MCT_DLE | 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 |= SUNI_MCT_DLE;
+ control |= dle;
break;
case ATM_LM_RMT_PHY:
- control |= SUNI_MCT_LLE;
+ control |= lle;
break;
default:
return -EINVAL;
}
- PUT(control,MCT);
+ 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)
{
@@ -179,14 +265,16 @@ static int suni_ioctl(struct atm_dev *dev,unsigned int cmd,void __user *arg)
case SONET_GETDIAG:
return get_diag(dev,arg);
case SONET_SETFRAMING:
- if ((int)(unsigned long)arg != SONET_FRAME_SONET) return -EINVAL;
- return 0;
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+ return set_framing(dev, arg);
case SONET_GETFRAMING:
- return put_user(SONET_FRAME_SONET,(int __user *)arg) ?
- -EFAULT : 0;
+ 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) ?
@@ -220,10 +308,6 @@ 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;
@@ -284,16 +368,21 @@ 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 */
- REG_CHANGE(SUNI_TPOP_APM_S,SUNI_TPOP_APM_S_SHIFT,SUNI_TPOP_S_SONET,
- TPOP_APM); /* use SONET */
+ 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;
}
diff --git a/drivers/atm/suni.h b/drivers/atm/suni.h
index efa79bf..7e3e656 100644
--- a/drivers/atm/suni.h
+++ b/drivers/atm/suni.h
@@ -1,7 +1,8 @@
-/* drivers/atm/suni.h - PMC PM5346 SUNI (PHY) declarations */
+/*
+ * drivers/atm/suni.h - S/UNI PHY driver
+ */
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
-
#ifndef DRIVER_ATM_SUNI_H
#define DRIVER_ATM_SUNI_H
@@ -39,7 +40,8 @@
#define SUNI_RLOP_LFM 0x1F /* RLOP Line FEBE MSB */
#define SUNI_TLOP_CTRL 0x20 /* TLOP Control */
#define SUNI_TLOP_DIAG 0x21 /* TLOP Diagnostic */
- /* 0x22-0x2F reserved */
+ /* 0x22-0x27 reserved */
+#define SUNI_SSTB_CTRL 0x28
#define SUNI_RPOP_SC 0x30 /* RPOP Status/Control */
#define SUNI_RPOP_IS 0x31 /* RPOP Interrupt Status */
/* 0x32 reserved */
@@ -52,6 +54,7 @@
#define SUNI_RPOP_PFM 0x3B /* RPOP Path FEBE MSB */
/* 0x3C reserved */
#define SUNI_RPOP_PBC 0x3D /* RPOP Path BIP-8 Configuration */
+#define SUNI_RPOP_RC 0x3D /* RPOP Ring Control (PM5355) */
/* 0x3E-0x3F reserved */
#define SUNI_TPOP_CD 0x40 /* TPOP Control/Diagnostic */
#define SUNI_TPOP_PC 0x41 /* TPOP Pointer Control */
@@ -82,7 +85,8 @@
#define SUNI_TACP_TCC 0x65 /* TACP Transmit Cell Counter */
#define SUNI_TACP_TCCM 0x66 /* TACP Transmit Cell Counter MSB */
#define SUNI_TACP_CFG 0x67 /* TACP Configuration */
- /* 0x68-0x7F reserved */
+#define SUNI_SPTB_CTRL 0x68 /* SPTB Control */
+ /* 0x69-0x7F reserved */
#define SUNI_MT 0x80 /* Master Test */
/* 0x81-0xFF reserved */
@@ -94,9 +98,18 @@
#define SUNI_MRI_ID_SHIFT 0
#define SUNI_MRI_TYPE 0x70 /* R, SUNI type (lite is 011) */
#define SUNI_MRI_TYPE_SHIFT 4
+#define SUNI_MRI_TYPE_PM5346 0x3 /* S/UNI 155 LITE */
+#define SUNI_MRI_TYPE_PM5347 0x4 /* S/UNI 155 PLUS */
+#define SUNI_MRI_TYPE_PM5350 0x7 /* S/UNI 155 ULTRA */
+#define SUNI_MRI_TYPE_PM5355 0x1 /* S/UNI 622 */
#define SUNI_MRI_RESET 0x80 /* RW, reset & power down chip
0: normal operation
1: reset & low power */
+
+/* MCM is reg 0x4 */
+#define SUNI_MCM_LLE 0x20 /* line loopback (PM5355) */
+#define SUNI_MCM_DLE 0x10 /* diagnostic loopback (PM5355) */
+
/* MCT is reg 5 */
#define SUNI_MCT_LOOPT 0x01 /* RW, timing source, 0: from
TRCLK+/- */
@@ -144,6 +157,12 @@
/* TLOP_DIAG is reg 0x21 */
#define SUNI_TLOP_DIAG_DBIP 0x01 /* insert line BIP err (continuously) */
+/* SSTB_CTRL is reg 0x28 */
+#define SUNI_SSTB_CTRL_LEN16 0x01 /* path trace message length bit */
+
+/* RPOP_RC is reg 0x3D (PM5355) */
+#define SUNI_RPOP_RC_ENSS 0x40 /* enable size bit */
+
/* TPOP_DIAG is reg 0x40 */
#define SUNI_TPOP_DIAG_PAIS 0x01 /* insert STS path alarm ind (cont) */
#define SUNI_TPOP_DIAG_DB3 0x02 /* insert path BIP err (continuously) */
@@ -191,6 +210,9 @@
pattern */
#define SUNI_TACP_IUCHP_GFC_SHIFT 4
+/* SPTB_CTRL is reg 0x68 */
+#define SUNI_SPTB_CTRL_LEN16 0x01 /* path trace message length */
+
/* MT is reg 0x80 */
#define SUNI_MT_HIZIO 0x01 /* RW, all but data bus & MP interface
tri-state */
@@ -208,6 +230,7 @@
struct suni_priv {
struct k_sonet_stats sonet_stats; /* link diagnostics */
int loop_mode; /* loopback mode */
+ int type; /* phy type */
struct atm_dev *dev; /* device back-pointer */
struct suni_priv *next; /* next SUNI */
};
--
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