Merge branch 'for-david' of git://git.kernel.org/pub/scm/linux/kernel/git/chris/linux-2.6

9 files changed, 1374 insertions, 1857 deletions

diff --git a/drivers/net/wan/Makefile b/drivers/net/wan/Makefile
index 102549605d0..cec16818a13 100644
--- a/drivers/net/wan/Makefile
+++ b/drivers/net/wan/Makefile
@@ -14,7 +14,7 @@ obj-$(CONFIG_HDLC_RAW)		+= hdlc_raw.o
 obj-$(CONFIG_HDLC_RAW_ETH)	+= hdlc_raw_eth.o
 obj-$(CONFIG_HDLC_CISCO)	+= hdlc_cisco.o
 obj-$(CONFIG_HDLC_FR)		+= hdlc_fr.o
-obj-$(CONFIG_HDLC_PPP)		+= hdlc_ppp.o	syncppp.o
+obj-$(CONFIG_HDLC_PPP)		+= hdlc_ppp.o
 obj-$(CONFIG_HDLC_X25)		+= hdlc_x25.o
 
 pc300-y				:= pc300_drv.o
diff --git a/drivers/net/wan/c101.c b/drivers/net/wan/c101.c
index c8e563106a4..b46897996f7 100644
--- a/drivers/net/wan/c101.c
+++ b/drivers/net/wan/c101.c
@@ -88,7 +88,7 @@ static card_t **new_card = &first_card;
 /* EDA address register must be set in EDAL, EDAH order - 8 bit ISA bus */
 #define sca_outw(value, reg, card) do { \
 	writeb(value & 0xFF, (card)->win0base + C101_SCA + (reg)); \
-	writeb((value >> 8 ) & 0xFF, (card)->win0base + C101_SCA + (reg+1));\
+	writeb((value >> 8 ) & 0xFF, (card)->win0base + C101_SCA + (reg + 1));\
 } while(0)
 
 #define port_to_card(port)	   (port)
@@ -113,7 +113,7 @@ static inline void openwin(card_t *card, u8 page)
 }
 
 
-#include "hd6457x.c"
+#include "hd64570.c"
 
 
 static inline void set_carrier(port_t *port)
@@ -381,7 +381,7 @@ static int __init c101_run(unsigned long irq, unsigned long winbase)
 		return result;
 	}
 
-	sca_init_sync_port(card); /* Set up C101 memory */
+	sca_init_port(card); /* Set up C101 memory */
 	set_carrier(card);
 
 	printk(KERN_INFO "%s: Moxa C101 on IRQ%u,"
diff --git a/drivers/net/wan/hd6457x.c b/drivers/net/wan/hd64570.c
index 434583a94b3..223238de475 100644
--- a/drivers/net/wan/hd6457x.c
+++ b/drivers/net/wan/hd64570.c
@@ -1,5 +1,5 @@
 /*
- * Hitachi SCA HD64570 and HD64572 common driver for Linux
+ * Hitachi SCA HD64570 driver for Linux
  *
  * Copyright (C) 1998-2003 Krzysztof Halasa <khc@pm.waw.pl>
  *
@@ -7,9 +7,7 @@
  * under the terms of version 2 of the GNU General Public License
  * as published by the Free Software Foundation.
  *
- * Sources of information:
- *    Hitachi HD64570 SCA User's Manual
- *    Hitachi HD64572 SCA-II User's Manual
+ * Source of information: Hitachi HD64570 SCA User's Manual
  *
  * We use the following SCA memory map:
  *
@@ -26,33 +24,26 @@
  * tx_ring_buffers * HDLC_MAX_MRU     = logical channel #0 TX buffers (if used)
  */
 
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/jiffies.h>
-#include <linux/types.h>
+#include <linux/bitops.h>
+#include <linux/errno.h>
 #include <linux/fcntl.h>
-#include <linux/interrupt.h>
+#include <linux/hdlc.h>
 #include <linux/in.h>
-#include <linux/string.h>
-#include <linux/errno.h>
 #include <linux/init.h>
+#include <linux/interrupt.h>
 #include <linux/ioport.h>
-#include <linux/bitops.h>
-
-#include <asm/system.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
 #include <linux/netdevice.h>
 #include <linux/skbuff.h>
-
-#include <linux/hdlc.h>
-
-#if (!defined (__HD64570_H) && !defined (__HD64572_H)) || \
-    (defined (__HD64570_H) && defined (__HD64572_H))
-#error Either hd64570.h or hd64572.h must be included
-#endif
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include "hd64570.h"
 
 #define get_msci(port)	  (phy_node(port) ?   MSCI1_OFFSET :   MSCI0_OFFSET)
 #define get_dmac_rx(port) (phy_node(port) ? DMAC1RX_OFFSET : DMAC0RX_OFFSET)
@@ -62,16 +53,6 @@
 #define SCA_INTR_DMAC_RX(node) (node ? 0x20 : 0x02)
 #define SCA_INTR_DMAC_TX(node) (node ? 0x40 : 0x04)
 
-#ifdef __HD64570_H /* HD64570 */
-#define sca_outa(value, reg, card)	sca_outw(value, reg, card)
-#define sca_ina(reg, card)		sca_inw(reg, card)
-#define writea(value, ptr)		writew(value, ptr)
-
-#else /* HD64572 */
-#define sca_outa(value, reg, card)	sca_outl(value, reg, card)
-#define sca_ina(reg, card)		sca_inl(reg, card)
-#define writea(value, ptr)		writel(value, ptr)
-#endif
 
 static inline struct net_device *port_to_dev(port_t *port)
 {
@@ -81,8 +62,6 @@ static inline struct net_device *port_to_dev(port_t *port)
 static inline int sca_intr_status(card_t *card)
 {
 	u8 result = 0;
-
-#ifdef __HD64570_H /* HD64570 */
 	u8 isr0 = sca_in(ISR0, card);
 	u8 isr1 = sca_in(ISR1, card);
 
@@ -93,18 +72,6 @@ static inline int sca_intr_status(card_t *card)
 	if (isr0 & 0x0F) result |= SCA_INTR_MSCI(0);
 	if (isr0 & 0xF0) result |= SCA_INTR_MSCI(1);
 
-#else /* HD64572 */
-	u32 isr0 = sca_inl(ISR0, card);
-
-	if (isr0 & 0x0000000F) result |= SCA_INTR_DMAC_RX(0);
-	if (isr0 & 0x000000F0) result |= SCA_INTR_DMAC_TX(0);
-	if (isr0 & 0x00000F00) result |= SCA_INTR_DMAC_RX(1);
-	if (isr0 & 0x0000F000) result |= SCA_INTR_DMAC_TX(1);
-	if (isr0 & 0x003E0000) result |= SCA_INTR_MSCI(0);
-	if (isr0 & 0x3E000000) result |= SCA_INTR_MSCI(1);
-
-#endif /* HD64570 vs HD64572 */
-
 	if (!(result & SCA_INTR_DMAC_TX(0)))
 		if (sca_in(DSR_TX(0), card) & DSR_EOM)
 			result |= SCA_INTR_DMAC_TX(0);
@@ -127,7 +94,6 @@ static inline u16 next_desc(port_t *port, u16 desc, int transmit)
 }
 
 
-
 static inline u16 desc_abs_number(port_t *port, u16 desc, int transmit)
 {
 	u16 rx_buffs = port_to_card(port)->rx_ring_buffers;
@@ -139,28 +105,26 @@ static inline u16 desc_abs_number(port_t *port, u16 desc, int transmit)
 }
 
 
-
 static inline u16 desc_offset(port_t *port, u16 desc, int transmit)
 {
-	/* Descriptor offset always fits in 16 bytes */
+	/* Descriptor offset always fits in 16 bits */
 	return desc_abs_number(port, desc, transmit) * sizeof(pkt_desc);
 }
 
 
-
-static inline pkt_desc __iomem *desc_address(port_t *port, u16 desc, int transmit)
+static inline pkt_desc __iomem *desc_address(port_t *port, u16 desc,
+					     int transmit)
 {
 #ifdef PAGE0_ALWAYS_MAPPED
 	return (pkt_desc __iomem *)(win0base(port_to_card(port))
-			   + desc_offset(port, desc, transmit));
+				    + desc_offset(port, desc, transmit));
 #else
 	return (pkt_desc __iomem *)(winbase(port_to_card(port))
-			   + desc_offset(port, desc, transmit));
+				    + desc_offset(port, desc, transmit));
 #endif
 }
 
 
-
 static inline u32 buffer_offset(port_t *port, u16 desc, int transmit)
 {
 	return port_to_card(port)->buff_offset +
@@ -186,7 +150,7 @@ static inline void sca_set_carrier(port_t *port)
 }
 
 
-static void sca_init_sync_port(port_t *port)
+static void sca_init_port(port_t *port)
 {
 	card_t *card = port_to_card(port);
 	int transmit, i;
@@ -195,7 +159,7 @@ static void sca_init_sync_port(port_t *port)
 	port->txin = 0;
 	port->txlast = 0;
 
-#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED)
+#ifndef PAGE0_ALWAYS_MAPPED
 	openwin(card, 0);
 #endif
 
@@ -209,7 +173,7 @@ static void sca_init_sync_port(port_t *port)
 			u16 chain_off = desc_offset(port, i + 1, transmit);
 			u32 buff_off = buffer_offset(port, i, transmit);
 
-			writea(chain_off, &desc->cp);
+			writew(chain_off, &desc->cp);
 			writel(buff_off, &desc->bp);
 			writew(0, &desc->len);
 			writeb(0, &desc->stat);
@@ -222,16 +186,14 @@ static void sca_init_sync_port(port_t *port)
 		sca_out(DCR_ABORT, transmit ? DCR_TX(phy_node(port)) :
 			DCR_RX(phy_node(port)), card);
 
-#ifdef __HD64570_H
-		sca_out(0, dmac + CPB, card); /* pointer base */
-#endif
 		/* current desc addr */
-		sca_outa(desc_offset(port, 0, transmit), dmac + CDAL, card);
+		sca_out(0, dmac + CPB, card); /* pointer base */
+		sca_outw(desc_offset(port, 0, transmit), dmac + CDAL, card);
 		if (!transmit)
-			sca_outa(desc_offset(port, buffs - 1, transmit),
+			sca_outw(desc_offset(port, buffs - 1, transmit),
 				 dmac + EDAL, card);
 		else
-			sca_outa(desc_offset(port, 0, transmit), dmac + EDAL,
+			sca_outw(desc_offset(port, 0, transmit), dmac + EDAL,
 				 card);
 
 		/* clear frame end interrupt counter */
@@ -258,7 +220,6 @@ static void sca_init_sync_port(port_t *port)
 }
 
 
-
 #ifdef NEED_SCA_MSCI_INTR
 /* MSCI interrupt service */
 static inline void sca_msci_intr(port_t *port)
@@ -282,17 +243,15 @@ static inline void sca_msci_intr(port_t *port)
 #endif
 
 
-
-static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc, u16 rxin)
+static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc,
+			  u16 rxin)
 {
 	struct net_device *dev = port_to_dev(port);
 	struct sk_buff *skb;
 	u16 len;
 	u32 buff;
-#ifndef ALL_PAGES_ALWAYS_MAPPED
 	u32 maxlen;
 	u8 page;
-#endif
 
 	len = readw(&desc->len);
 	skb = dev_alloc_skb(len);
@@ -302,7 +261,6 @@ static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc, u1
 	}
 
 	buff = buffer_offset(port, rxin, 0);
-#ifndef ALL_PAGES_ALWAYS_MAPPED
 	page = buff / winsize(card);
 	buff = buff % winsize(card);
 	maxlen = winsize(card) - buff;
@@ -314,12 +272,10 @@ static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc, u1
 		openwin(card, page + 1);
 		memcpy_fromio(skb->data + maxlen, winbase(card), len - maxlen);
 	} else
-#endif
-	memcpy_fromio(skb->data, winbase(card) + buff, len);
+		memcpy_fromio(skb->data, winbase(card) + buff, len);
 
-#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED)
-	/* select pkt_desc table page back */
-	openwin(card, 0);
+#ifndef PAGE0_ALWAYS_MAPPED
+	openwin(card, 0);	/* select pkt_desc table page back */
 #endif
 	skb_put(skb, len);
 #ifdef DEBUG_PKT
@@ -333,7 +289,6 @@ static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc, u1
 }
 
 
-
 /* Receive DMA interrupt service */
 static inline void sca_rx_intr(port_t *port)
 {
@@ -353,7 +308,7 @@ static inline void sca_rx_intr(port_t *port)
 	while (1) {
 		u32 desc_off = desc_offset(port, port->rxin, 0);
 		pkt_desc __iomem *desc;
-		u32 cda = sca_ina(dmac + CDAL, card);
+		u32 cda = sca_inw(dmac + CDAL, card);
 
 		if ((cda >= desc_off) && (cda < desc_off + sizeof(pkt_desc)))
 			break;	/* No frame received */
@@ -377,7 +332,7 @@ static inline void sca_rx_intr(port_t *port)
 			sca_rx(card, port, desc, port->rxin);
 
 		/* Set new error descriptor address */
-		sca_outa(desc_off, dmac + EDAL, card);
+		sca_outw(desc_off, dmac + EDAL, card);
 		port->rxin = next_desc(port, port->rxin, 0);
 	}
 
@@ -386,7 +341,6 @@ static inline void sca_rx_intr(port_t *port)
 }
 
 
-
 /* Transmit DMA interrupt service */
 static inline void sca_tx_intr(port_t *port)
 {
@@ -407,7 +361,7 @@ static inline void sca_tx_intr(port_t *port)
 		pkt_desc __iomem *desc;
 
 		u32 desc_off = desc_offset(port, port->txlast, 1);
-		u32 cda = sca_ina(dmac + CDAL, card);
+		u32 cda = sca_inw(dmac + CDAL, card);
 		if ((cda >= desc_off) && (cda < desc_off + sizeof(pkt_desc)))
 			break;	/* Transmitter is/will_be sending this frame */
 
@@ -423,17 +377,13 @@ static inline void sca_tx_intr(port_t *port)
 }
 
 
-
 static irqreturn_t sca_intr(int irq, void* dev_id)
 {
 	card_t *card = dev_id;
 	int i;
 	u8 stat;
 	int handled = 0;
-
-#ifndef ALL_PAGES_ALWAYS_MAPPED
 	u8 page = sca_get_page(card);
-#endif
 
 	while((stat = sca_intr_status(card)) != 0) {
 		handled = 1;
@@ -452,14 +402,11 @@ static irqreturn_t sca_intr(int irq, void* dev_id)
 		}
 	}
 
-#ifndef ALL_PAGES_ALWAYS_MAPPED
 	openwin(card, page);		/* Restore original page */
-#endif
 	return IRQ_RETVAL(handled);
 }
 
 
-
 static void sca_set_port(port_t *port)
 {
 	card_t* card = port_to_card(port);
@@ -497,12 +444,7 @@ static void sca_set_port(port_t *port)
 	port->tmc = tmc;
 
 	/* baud divisor - time constant*/
-#ifdef __HD64570_H
 	sca_out(port->tmc, msci + TMC, card);
-#else
-	sca_out(port->tmc, msci + TMCR, card);
-	sca_out(port->tmc, msci + TMCT, card);
-#endif
 
 	/* Set BRG bits */
 	sca_out(port->rxs, msci + RXS, card);
@@ -518,7 +460,6 @@ static void sca_set_port(port_t *port)
 }
 
 
-
 static void sca_open(struct net_device *dev)
 {
 	port_t *port = dev_to_port(dev);
@@ -540,11 +481,7 @@ static void sca_open(struct net_device *dev)
 	switch(port->parity) {
 	case PARITY_CRC16_PR0:	     md0 = MD0_HDLC | MD0_CRC_16_0;  break;
 	case PARITY_CRC16_PR1:	     md0 = MD0_HDLC | MD0_CRC_16;    break;
-#ifdef __HD64570_H
 	case PARITY_CRC16_PR0_CCITT: md0 = MD0_HDLC | MD0_CRC_ITU_0; break;
-#else
-	case PARITY_CRC32_PR1_CCITT: md0 = MD0_HDLC | MD0_CRC_ITU32; break;
-#endif
 	case PARITY_CRC16_PR1_CCITT: md0 = MD0_HDLC | MD0_CRC_ITU;   break;
 	default:		     md0 = MD0_HDLC | MD0_CRC_NONE;
 	}
@@ -554,35 +491,20 @@ static void sca_open(struct net_device *dev)
 	sca_out(0x00, msci + MD1, card); /* no address field check */
 	sca_out(md2, msci + MD2, card);
 	sca_out(0x7E, msci + IDL, card); /* flag character 0x7E */
-#ifdef __HD64570_H
 	sca_out(CTL_IDLE, msci + CTL, card);
-#else
-	/* Skip the rest of underrun frame */
-	sca_out(CTL_IDLE | CTL_URCT | CTL_URSKP, msci + CTL, card);
-#endif
 
-#ifdef __HD64570_H
 	/* Allow at least 8 bytes before requesting RX DMA operation */
 	/* TX with higher priority and possibly with shorter transfers */
 	sca_out(0x07, msci + RRC, card); /* +1=RXRDY/DMA activation condition*/
 	sca_out(0x10, msci + TRC0, card); /* = TXRDY/DMA activation condition*/
 	sca_out(0x14, msci + TRC1, card); /* +1=TXRDY/DMA deactiv condition */
-#else
-	sca_out(0x0F, msci + RNR, card); /* +1=RX DMA activation condition */
-	sca_out(0x3C, msci + TFS, card); /* +1 = TX start */
-	sca_out(0x38, msci + TCR, card); /* =Critical TX DMA activ condition */
-	sca_out(0x38, msci + TNR0, card); /* =TX DMA activation condition */
-	sca_out(0x3F, msci + TNR1, card); /* +1=TX DMA deactivation condition*/
-#endif
 
 /* We're using the following interrupts:
    - TXINT (DMAC completed all transmisions, underrun or DCD change)
    - all DMA interrupts
 */
-
 	sca_set_carrier(port);
 
-#ifdef __HD64570_H
 	/* MSCI TX INT and RX INT A IRQ enable */
 	sca_out(IE0_TXINT | IE0_RXINTA, msci + IE0, card);
 	sca_out(IE1_UDRN | IE1_CDCD, msci + IE1, card);
@@ -591,21 +513,8 @@ static void sca_open(struct net_device *dev)
 	/* enable DMA IRQ */
 	sca_out(sca_in(IER1, card) | (phy_node(port) ? 0xF0 : 0x0F),
 		IER1, card);
-#else
-	/* MSCI TXINT and RXINTA interrupt enable */
-	sca_outl(IE0_TXINT | IE0_RXINTA | IE0_UDRN | IE0_CDCD, msci + IE0,
-		 card);
-	/* DMA & MSCI IRQ enable */
-	sca_outl(sca_inl(IER0, card) |
-		 (phy_node(port) ? 0x0A006600 : 0x000A0066), IER0, card);
-#endif
 
-#ifdef __HD64570_H
 	sca_out(port->tmc, msci + TMC, card); /* Restore registers */
-#else
-	sca_out(port->tmc, msci + TMCR, card);
-	sca_out(port->tmc, msci + TMCT, card);
-#endif
 	sca_out(port->rxs, msci + RXS, card);
 	sca_out(port->txs, msci + TXS, card);
 	sca_out(CMD_TX_ENABLE, msci + CMD, card);
@@ -615,7 +524,6 @@ static void sca_open(struct net_device *dev)
 }
 
 
-
 static void sca_close(struct net_device *dev)
 {
 	port_t *port = dev_to_port(dev);
@@ -623,23 +531,17 @@ static void sca_close(struct net_device *dev)
 
 	/* reset channel */
 	sca_out(CMD_RESET, get_msci(port) + CMD, port_to_card(port));
-#ifdef __HD64570_H
 	/* disable MSCI interrupts */
 	sca_out(sca_in(IER0, card) & (phy_node(port) ? 0x0F : 0xF0),
 		IER0, card);
 	/* disable DMA interrupts */
 	sca_out(sca_in(IER1, card) & (phy_node(port) ? 0x0F : 0xF0),
 		IER1, card);
-#else
-	/* disable DMA & MSCI IRQ */
-	sca_outl(sca_inl(IER0, card) &
-		 (phy_node(port) ? 0x00FF00FF : 0xFF00FF00), IER0, card);
-#endif
+
 	netif_stop_queue(dev);
 }
 
 
-
 static int sca_attach(struct net_device *dev, unsigned short encoding,
 		      unsigned short parity)
 {
@@ -653,11 +555,7 @@ static int sca_attach(struct net_device *dev, unsigned short encoding,
 	if (parity != PARITY_NONE &&
 	    parity != PARITY_CRC16_PR0 &&
 	    parity != PARITY_CRC16_PR1 &&
-#ifdef __HD64570_H
 	    parity != PARITY_CRC16_PR0_CCITT &&
-#else
-	    parity != PARITY_CRC32_PR1_CCITT &&
-#endif
 	    parity != PARITY_CRC16_PR1_CCITT)
 		return -EINVAL;
 
@@ -667,34 +565,30 @@ static int sca_attach(struct net_device *dev, unsigned short encoding,
 }
 
 
-
 #ifdef DEBUG_RINGS
 static void sca_dump_rings(struct net_device *dev)
 {
 	port_t *port = dev_to_port(dev);
 	card_t *card = port_to_card(port);
 	u16 cnt;
-#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED)
-	u8 page;
-#endif
+#ifndef PAGE0_ALWAYS_MAPPED
+	u8 page = sca_get_page(card);
 
-#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED)
-	page = sca_get_page(card);
 	openwin(card, 0);
 #endif
 
 	printk(KERN_DEBUG "RX ring: CDA=%u EDA=%u DSR=%02X in=%u %sactive",
-	       sca_ina(get_dmac_rx(port) + CDAL, card),
-	       sca_ina(get_dmac_rx(port) + EDAL, card),
+	       sca_inw(get_dmac_rx(port) + CDAL, card),
+	       sca_inw(get_dmac_rx(port) + EDAL, card),
 	       sca_in(DSR_RX(phy_node(port)), card), port->rxin,
-	       sca_in(DSR_RX(phy_node(port)), card) & DSR_DE?"":"in");
+	       sca_in(DSR_RX(phy_node(port)), card) & DSR_DE ? "" : "in");
 	for (cnt = 0; cnt < port_to_card(port)->rx_ring_buffers; cnt++)
 		printk(" %02X", readb(&(desc_address(port, cnt, 0)->stat)));
 
 	printk("\n" KERN_DEBUG "TX ring: CDA=%u EDA=%u DSR=%02X in=%u "
 	       "last=%u %sactive",
-	       sca_ina(get_dmac_tx(port) + CDAL, card),
-	       sca_ina(get_dmac_tx(port) + EDAL, card),
+	       sca_inw(get_dmac_tx(port) + CDAL, card),
+	       sca_inw(get_dmac_tx(port) + EDAL, card),
 	       sca_in(DSR_TX(phy_node(port)), card), port->txin, port->txlast,
 	       sca_in(DSR_TX(phy_node(port)), card) & DSR_DE ? "" : "in");
 
@@ -702,12 +596,8 @@ static void sca_dump_rings(struct net_device *dev)
 		printk(" %02X", readb(&(desc_address(port, cnt, 1)->stat)));
 	printk("\n");
 
-	printk(KERN_DEBUG "MSCI: MD: %02x %02x %02x, "
-	       "ST: %02x %02x %02x %02x"
-#ifdef __HD64572_H
-	       " %02x"
-#endif
-	       ", FST: %02x CST: %02x %02x\n",
+	printk(KERN_DEBUG "MSCI: MD: %02x %02x %02x, ST: %02x %02x %02x %02x,"
+	       " FST: %02x CST: %02x %02x\n",
 	       sca_in(get_msci(port) + MD0, card),
 	       sca_in(get_msci(port) + MD1, card),
 	       sca_in(get_msci(port) + MD2, card),
@@ -715,52 +605,33 @@ static void sca_dump_rings(struct net_device *dev)
 	       sca_in(get_msci(port) + ST1, card),
 	       sca_in(get_msci(port) + ST2, card),
 	       sca_in(get_msci(port) + ST3, card),
-#ifdef __HD64572_H
-	       sca_in(get_msci(port) + ST4, card),
-#endif
 	       sca_in(get_msci(port) + FST, card),
 	       sca_in(get_msci(port) + CST0, card),
 	       sca_in(get_msci(port) + CST1, card));
 
-#ifdef __HD64572_H
-	printk(KERN_DEBUG "ILAR: %02x ISR: %08x %08x\n", sca_in(ILAR, card),
-	       sca_inl(ISR0, card), sca_inl(ISR1, card));
-#else
 	printk(KERN_DEBUG "ISR: %02x %02x %02x\n", sca_in(ISR0, card),
 	       sca_in(ISR1, card), sca_in(ISR2, card));
-#endif
 
-#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED)
+#ifndef PAGE0_ALWAYS_MAPPED
 	openwin(card, page); /* Restore original page */
 #endif
 }
 #endif /* DEBUG_RINGS */
 
 
-
 static int sca_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	port_t *port = dev_to_port(dev);
 	card_t *card = port_to_card(port);
 	pkt_desc __iomem *desc;
 	u32 buff, len;
-#ifndef ALL_PAGES_ALWAYS_MAPPED
 	u8 page;
 	u32 maxlen;
-#endif
 
 	spin_lock_irq(&port->lock);
 
 	desc = desc_address(port, port->txin + 1, 1);
-	if (readb(&desc->stat)) { /* allow 1 packet gap */
-		/* should never happen - previous xmit should stop queue */
-#ifdef DEBUG_PKT
-		printk(KERN_DEBUG "%s: transmitter buffer full\n", dev->name);
-#endif
-		netif_stop_queue(dev);
-		spin_unlock_irq(&port->lock);
-		return 1;	/* request packet to be queued */
-	}
+	BUG_ON(readb(&desc->stat)); /* previous xmit should stop queue */
 
 #ifdef DEBUG_PKT
 	printk(KERN_DEBUG "%s TX(%i):", dev->name, skb->len);
@@ -770,7 +641,6 @@ static int sca_xmit(struct sk_buff *skb, struct net_device *dev)
 	desc = desc_address(port, port->txin, 1);
 	buff = buffer_offset(port, port->txin, 1);
 	len = skb->len;
-#ifndef ALL_PAGES_ALWAYS_MAPPED
 	page = buff / winsize(card);
 	buff = buff % winsize(card);
 	maxlen = winsize(card) - buff;
@@ -780,12 +650,10 @@ static int sca_xmit(struct sk_buff *skb, struct net_device *dev)
 		memcpy_toio(winbase(card) + buff, skb->data, maxlen);
 		openwin(card, page + 1);
 		memcpy_toio(winbase(card), skb->data + maxlen, len - maxlen);
-	}
-	else
-#endif
+	} else
 		memcpy_toio(winbase(card) + buff, skb->data, len);
 
-#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED)
+#ifndef PAGE0_ALWAYS_MAPPED
 	openwin(card, 0);	/* select pkt_desc table page back */
 #endif
 	writew(len, &desc->len);
@@ -793,7 +661,7 @@ static int sca_xmit(struct sk_buff *skb, struct net_device *dev)
 	dev->trans_start = jiffies;
 
 	port->txin = next_desc(port, port->txin, 1);
-	sca_outa(desc_offset(port, port->txin, 1),
+	sca_outw(desc_offset(port, port->txin, 1),
 		 get_dmac_tx(port) + EDAL, card);
 
 	sca_out(DSR_DE, DSR_TX(phy_node(port)), card); /* Enable TX DMA */
@@ -809,40 +677,29 @@ static int sca_xmit(struct sk_buff *skb, struct net_device *dev)
 }
 
 
-
 #ifdef NEED_DETECT_RAM
-static u32 __devinit sca_detect_ram(card_t *card, u8 __iomem *rambase, u32 ramsize)
+static u32 __devinit sca_detect_ram(card_t *card, u8 __iomem *rambase,
+				    u32 ramsize)
 {
 	/* Round RAM size to 32 bits, fill from end to start */
 	u32 i = ramsize &= ~3;
-
-#ifndef ALL_PAGES_ALWAYS_MAPPED
 	u32 size = winsize(card);
 
 	openwin(card, (i - 4) / size); /* select last window */
-#endif
+
 	do {
 		i -= 4;
-#ifndef ALL_PAGES_ALWAYS_MAPPED
 		if ((i + 4) % size == 0)
 			openwin(card, i / size);
 		writel(i ^ 0x12345678, rambase + i % size);
-#else
-		writel(i ^ 0x12345678, rambase + i);
-#endif
-	}while (i > 0);
+	} while (i > 0);
 
 	for (i = 0; i < ramsize ; i += 4) {
-#ifndef ALL_PAGES_ALWAYS_MAPPED
 		if (i % size == 0)
 			openwin(card, i / size);
 
 		if (readl(rambase + i % size) != (i ^ 0x12345678))
 			break;
-#else
-		if (readl(rambase + i) != (i ^ 0x12345678))
-			break;
-#endif
 	}
 
 	return i;
@@ -850,7 +707,6 @@ static u32 __devinit sca_detect_ram(card_t *card, u8 __iomem *rambase, u32 ramsi
 #endif /* NEED_DETECT_RAM */
 
 
-
 static void __devinit sca_init(card_t *card, int wait_states)
 {
 	sca_out(wait_states, WCRL, card); /* Wait Control */
diff --git a/drivers/net/wan/hd64572.c b/drivers/net/wan/hd64572.c
new file mode 100644
index 00000000000..0bcc0b5f22d
--- /dev/null
+++ b/drivers/net/wan/hd64572.c
@@ -0,0 +1,640 @@
+/*
+ * Hitachi (now Renesas) SCA-II HD64572 driver for Linux
+ *
+ * Copyright (C) 1998-2008 Krzysztof Halasa <khc@pm.waw.pl>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License
+ * as published by the Free Software Foundation.
+ *
+ * Source of information: HD64572 SCA-II User's Manual
+ *
+ * We use the following SCA memory map:
+ *
+ * Packet buffer descriptor rings - starting from card->rambase:
+ * rx_ring_buffers * sizeof(pkt_desc) = logical channel #0 RX ring
+ * tx_ring_buffers * sizeof(pkt_desc) = logical channel #0 TX ring
+ * rx_ring_buffers * sizeof(pkt_desc) = logical channel #1 RX ring (if used)
+ * tx_ring_buffers * sizeof(pkt_desc) = logical channel #1 TX ring (if used)
+ *
+ * Packet data buffers - starting from card->rambase + buff_offset:
+ * rx_ring_buffers * HDLC_MAX_MRU     = logical channel #0 RX buffers
+ * tx_ring_buffers * HDLC_MAX_MRU     = logical channel #0 TX buffers
+ * rx_ring_buffers * HDLC_MAX_MRU     = logical channel #0 RX buffers (if used)
+ * tx_ring_buffers * HDLC_MAX_MRU     = logical channel #0 TX buffers (if used)
+ */
+
+#include <linux/bitops.h>
+#include <linux/errno.h>
+#include <linux/fcntl.h>
+#include <linux/hdlc.h>
+#include <linux/in.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include "hd64572.h"
+
+#define NAPI_WEIGHT		16
+
+#define get_msci(port)	  (port->chan ?   MSCI1_OFFSET :   MSCI0_OFFSET)
+#define get_dmac_rx(port) (port->chan ? DMAC1RX_OFFSET : DMAC0RX_OFFSET)
+#define get_dmac_tx(port) (port->chan ? DMAC1TX_OFFSET : DMAC0TX_OFFSET)
+
+#define sca_in(reg, card)	     readb(card->scabase + (reg))
+#define sca_out(value, reg, card)    writeb(value, card->scabase + (reg))
+#define sca_inw(reg, card)	     readw(card->scabase + (reg))
+#define sca_outw(value, reg, card)   writew(value, card->scabase + (reg))
+#define sca_inl(reg, card)	     readl(card->scabase + (reg))
+#define sca_outl(value, reg, card)   writel(value, card->scabase + (reg))
+
+static int sca_poll(struct napi_struct *napi, int budget);
+
+static inline port_t* dev_to_port(struct net_device *dev)
+{
+	return dev_to_hdlc(dev)->priv;
+}
+
+static inline void enable_intr(port_t *port)
+{
+	/* enable DMIB and MSCI RXINTA interrupts */
+	sca_outl(sca_inl(IER0, port->card) |
+		 (port->chan ? 0x08002200 : 0x00080022), IER0, port->card);
+}
+
+static inline void disable_intr(port_t *port)
+{
+	sca_outl(sca_inl(IER0, port->card) &
+		 (port->chan ? 0x00FF00FF : 0xFF00FF00), IER0, port->card);
+}
+
+static inline u16 desc_abs_number(port_t *port, u16 desc, int transmit)
+{
+	u16 rx_buffs = port->card->rx_ring_buffers;
+	u16 tx_buffs = port->card->tx_ring_buffers;
+
+	desc %= (transmit ? tx_buffs : rx_buffs); // called with "X + 1" etc.
+	return port->chan * (rx_buffs + tx_buffs) + transmit * rx_buffs + desc;
+}
+
+
+static inline u16 desc_offset(port_t *port, u16 desc, int transmit)
+{
+	/* Descriptor offset always fits in 16 bits */
+	return desc_abs_number(port, desc, transmit) * sizeof(pkt_desc);
+}
+
+
+static inline pkt_desc __iomem *desc_address(port_t *port, u16 desc,
+					     int transmit)
+{
+	return (pkt_desc __iomem *)(port->card->rambase +
+				    desc_offset(port, desc, transmit));
+}
+
+
+static inline u32 buffer_offset(port_t *port, u16 desc, int transmit)
+{
+	return port->card->buff_offset +
+		desc_abs_number(port, desc, transmit) * (u32)HDLC_MAX_MRU;
+}
+
+
+static inline void sca_set_carrier(port_t *port)
+{
+	if (!(sca_in(get_msci(port) + ST3, port->card) & ST3_DCD)) {
+#ifdef DEBUG_LINK
+		printk(KERN_DEBUG "%s: sca_set_carrier on\n",
+		       port->netdev.name);
+#endif
+		netif_carrier_on(port->netdev);
+	} else {
+#ifdef DEBUG_LINK
+		printk(KERN_DEBUG "%s: sca_set_carrier off\n",
+		       port->netdev.name);
+#endif
+		netif_carrier_off(port->netdev);
+	}
+}
+
+
+static void sca_init_port(port_t *port)
+{
+	card_t *card = port->card;
+	u16 dmac_rx = get_dmac_rx(port), dmac_tx = get_dmac_tx(port);
+	int transmit, i;
+
+	port->rxin = 0;
+	port->txin = 0;
+	port->txlast = 0;
+
+	for (transmit = 0; transmit < 2; transmit++) {
+		u16 buffs = transmit ? card->tx_ring_buffers
+			: card->rx_ring_buffers;
+
+		for (i = 0; i < buffs; i++) {
+			pkt_desc __iomem *desc = desc_address(port, i, transmit);
+			u16 chain_off = desc_offset(port, i + 1, transmit);
+			u32 buff_off = buffer_offset(port, i, transmit);
+
+			writel(chain_off, &desc->cp);
+			writel(buff_off, &desc->bp);
+			writew(0, &desc->len);
+			writeb(0, &desc->stat);
+		}
+	}
+
+	/* DMA disable - to halt state */
+	sca_out(0, DSR_RX(port->chan), card);
+	sca_out(0, DSR_TX(port->chan), card);
+
+	/* software ABORT - to initial state */
+	sca_out(DCR_ABORT, DCR_RX(port->chan), card);
+	sca_out(DCR_ABORT, DCR_TX(port->chan), card);
+
+	/* current desc addr */
+	sca_outl(desc_offset(port, 0, 0), dmac_rx + CDAL, card);
+	sca_outl(desc_offset(port, card->tx_ring_buffers - 1, 0),
+		 dmac_rx + EDAL, card);
+	sca_outl(desc_offset(port, 0, 1), dmac_tx + CDAL, card);
+	sca_outl(desc_offset(port, 0, 1), dmac_tx + EDAL, card);
+
+	/* clear frame end interrupt counter */
+	sca_out(DCR_CLEAR_EOF, DCR_RX(port->chan), card);
+	sca_out(DCR_CLEAR_EOF, DCR_TX(port->chan), card);
+
+	/* Receive */
+	sca_outw(HDLC_MAX_MRU, dmac_rx + BFLL, card); /* set buffer length */
+	sca_out(0x14, DMR_RX(port->chan), card); /* Chain mode, Multi-frame */
+	sca_out(DIR_EOME, DIR_RX(port->chan), card); /* enable interrupts */
+	sca_out(DSR_DE, DSR_RX(port->chan), card); /* DMA enable */
+
+	/* Transmit */
+	sca_out(0x14, DMR_TX(port->chan), card); /* Chain mode, Multi-frame */
+	sca_out(DIR_EOME, DIR_TX(port->chan), card); /* enable interrupts */
+
+	sca_set_carrier(port);
+	netif_napi_add(port->netdev, &port->napi, sca_poll, NAPI_WEIGHT);
+}
+
+
+/* MSCI interrupt service */
+static inline void sca_msci_intr(port_t *port)
+{
+	u16 msci = get_msci(port);
+	card_t* card = port->card;
+
+	if (sca_in(msci + ST1, card) & ST1_CDCD) {
+		/* Reset MSCI CDCD status bit */
+		sca_out(ST1_CDCD, msci + ST1, card);
+		sca_set_carrier(port);
+	}
+}
+
+
+static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc,
+			  u16 rxin)
+{
+	struct net_device *dev = port->netdev;
+	struct sk_buff *skb;
+	u16 len;
+	u32 buff;
+
+	len = readw(&desc->len);
+	skb = dev_alloc_skb(len);
+	if (!skb) {
+		dev->stats.rx_dropped++;
+		return;
+	}
+
+	buff = buffer_offset(port, rxin, 0);
+	memcpy_fromio(skb->data, card->rambase + buff, len);
+
+	skb_put(skb, len);
+#ifdef DEBUG_PKT
+	printk(KERN_DEBUG "%s RX(%i):", dev->name, skb->len);
+	debug_frame(skb);
+#endif
+	dev->stats.rx_packets++;
+	dev->stats.rx_bytes += skb->len;
+	skb->protocol = hdlc_type_trans(skb, dev);
+	netif_receive_skb(skb);
+}
+
+
+/* Receive DMA service */
+static inline int sca_rx_done(port_t *port, int budget)
+{
+	struct net_device *dev = port->netdev;
+	u16 dmac = get_dmac_rx(port);
+	card_t *card = port->card;
+	u8 stat = sca_in(DSR_RX(port->chan), card); /* read DMA Status */
+	int received = 0;
+
+	/* Reset DSR status bits */
+	sca_out((stat & (DSR_EOT | DSR_EOM | DSR_BOF | DSR_COF)) | DSR_DWE,
+		DSR_RX(port->chan), card);
+
+	if (stat & DSR_BOF)
+		/* Dropped one or more frames */
+		dev->stats.rx_over_errors++;
+
+	while (received < budget) {
+		u32 desc_off = desc_offset(port, port->rxin, 0);
+		pkt_desc __iomem *desc;
+		u32 cda = sca_inl(dmac + CDAL, card);
+
+		if ((cda >= desc_off) && (cda < desc_off + sizeof(pkt_desc)))
+			break;	/* No frame received */
+
+		desc = desc_address(port, port->rxin, 0);
+		stat = readb(&desc->stat);
+		if (!(stat & ST_RX_EOM))
+			port->rxpart = 1; /* partial frame received */
+		else if ((stat & ST_ERROR_MASK) || port->rxpart) {
+			dev->stats.rx_errors++;
+			if (stat & ST_RX_OVERRUN)
+				dev->stats.rx_fifo_errors++;
+			else if ((stat & (ST_RX_SHORT | ST_RX_ABORT |
+					  ST_RX_RESBIT)) || port->rxpart)
+				dev->stats.rx_frame_errors++;
+			else if (stat & ST_RX_CRC)
+				dev->stats.rx_crc_errors++;
+			if (stat & ST_RX_EOM)
+				port->rxpart = 0; /* received last fragment */
+		} else {
+			sca_rx(card, port, desc, port->rxin);
+			received++;
+		}
+
+		/* Set new error descriptor address */
+		sca_outl(desc_off, dmac + EDAL, card);
+		port->rxin = (port->rxin + 1) % card->rx_ring_buffers;
+	}
+
+	/* make sure RX DMA is enabled */
+	sca_out(DSR_DE, DSR_RX(port->chan), card);
+	return received;
+}
+
+
+/* Transmit DMA service */
+static inline void sca_tx_done(port_t *port)
+{
+	struct net_device *dev = port->netdev;
+	card_t* card = port->card;
+	u8 stat;
+
+	spin_lock(&port->lock);
+
+	stat = sca_in(DSR_TX(port->chan), card); /* read DMA Status */
+
+	/* Reset DSR status bits */