}
-#include "hd6457x.c"
+#include "hd64570.c"
static inline void set_carrier(port_t *port)
--- /dev/null
+/*
+ * Hitachi SCA HD64570 and HD64572 common driver for Linux
+ *
+ * Copyright (C) 1998-2003 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.
+ *
+ * Sources of information:
+ * Hitachi HD64570 SCA User's Manual
+ * Hitachi HD64572 SCA-II User's Manual
+ *
+ * We use the following SCA memory map:
+ *
+ * Packet buffer descriptor rings - starting from winbase or win0base:
+ * 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 winbase + 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/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/jiffies.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/in.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/bitops.h>
+
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include <asm/io.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
+
+#define get_msci(port) (phy_node(port) ? MSCI1_OFFSET : MSCI0_OFFSET)
+#define get_dmac_rx(port) (phy_node(port) ? DMAC1RX_OFFSET : DMAC0RX_OFFSET)
+#define get_dmac_tx(port) (phy_node(port) ? DMAC1TX_OFFSET : DMAC0TX_OFFSET)
+
+#define SCA_INTR_MSCI(node) (node ? 0x10 : 0x01)
+#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)
+{
+ return port->dev;
+}
+
+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);
+
+ if (isr1 & 0x03) result |= SCA_INTR_DMAC_RX(0);
+ if (isr1 & 0x0C) result |= SCA_INTR_DMAC_TX(0);
+ if (isr1 & 0x30) result |= SCA_INTR_DMAC_RX(1);
+ if (isr1 & 0xC0) result |= SCA_INTR_DMAC_TX(1);
+ 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);
+ if (!(result & SCA_INTR_DMAC_TX(1)))
+ if (sca_in(DSR_TX(1), card) & DSR_EOM)
+ result |= SCA_INTR_DMAC_TX(1);
+
+ return result;
+}
+
+static inline port_t* dev_to_port(struct net_device *dev)
+{
+ return dev_to_hdlc(dev)->priv;
+}
+
+static inline u16 next_desc(port_t *port, u16 desc, int transmit)
+{
+ return (desc + 1) % (transmit ? port_to_card(port)->tx_ring_buffers
+ : port_to_card(port)->rx_ring_buffers);
+}
+
+
+
+static inline u16 desc_abs_number(port_t *port, u16 desc, int transmit)
+{
+ u16 rx_buffs = port_to_card(port)->rx_ring_buffers;
+ u16 tx_buffs = port_to_card(port)->tx_ring_buffers;
+
+ desc %= (transmit ? tx_buffs : rx_buffs); // called with "X + 1" etc.
+ return log_node(port) * (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 bytes */
+ return desc_abs_number(port, desc, transmit) * sizeof(pkt_desc);
+}
+
+
+
+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));
+#else
+ return (pkt_desc __iomem *)(winbase(port_to_card(port))
+ + 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 +
+ 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_to_card(port)) & ST3_DCD)) {
+#ifdef DEBUG_LINK
+ printk(KERN_DEBUG "%s: sca_set_carrier on\n",
+ port_to_dev(port)->name);
+#endif
+ netif_carrier_on(port_to_dev(port));
+ } else {
+#ifdef DEBUG_LINK
+ printk(KERN_DEBUG "%s: sca_set_carrier off\n",
+ port_to_dev(port)->name);
+#endif
+ netif_carrier_off(port_to_dev(port));
+ }
+}
+
+
+static void sca_init_sync_port(port_t *port)
+{
+ card_t *card = port_to_card(port);
+ int transmit, i;
+
+ port->rxin = 0;
+ port->txin = 0;
+ port->txlast = 0;
+
+#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED)
+ openwin(card, 0);
+#endif
+
+ for (transmit = 0; transmit < 2; transmit++) {
+ u16 dmac = transmit ? get_dmac_tx(port) : get_dmac_rx(port);
+ 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);
+
+ writea(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, transmit ? DSR_TX(phy_node(port)) :
+ DSR_RX(phy_node(port)), card);
+ /* software ABORT - to initial state */
+ 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);
+ if (!transmit)
+ sca_outa(desc_offset(port, buffs - 1, transmit),
+ dmac + EDAL, card);
+ else
+ sca_outa(desc_offset(port, 0, transmit), dmac + EDAL,
+ card);
+
+ /* clear frame end interrupt counter */
+ sca_out(DCR_CLEAR_EOF, transmit ? DCR_TX(phy_node(port)) :
+ DCR_RX(phy_node(port)), card);
+
+ if (!transmit) { /* Receive */
+ /* set buffer length */
+ sca_outw(HDLC_MAX_MRU, dmac + BFLL, card);
+ /* Chain mode, Multi-frame */
+ sca_out(0x14, DMR_RX(phy_node(port)), card);
+ sca_out(DIR_EOME | DIR_BOFE, DIR_RX(phy_node(port)),
+ card);
+ /* DMA enable */
+ sca_out(DSR_DE, DSR_RX(phy_node(port)), card);
+ } else { /* Transmit */
+ /* Chain mode, Multi-frame */
+ sca_out(0x14, DMR_TX(phy_node(port)), card);
+ /* enable underflow interrupts */
+ sca_out(DIR_BOFE, DIR_TX(phy_node(port)), card);
+ }
+ }
+ sca_set_carrier(port);
+}
+
+
+
+#ifdef NEED_SCA_MSCI_INTR
+/* MSCI interrupt service */
+static inline void sca_msci_intr(port_t *port)
+{
+ u16 msci = get_msci(port);
+ card_t* card = port_to_card(port);
+ u8 stat = sca_in(msci + ST1, card); /* read MSCI ST1 status */
+
+ /* Reset MSCI TX underrun and CDCD status bit */
+ sca_out(stat & (ST1_UDRN | ST1_CDCD), msci + ST1, card);
+
+ if (stat & ST1_UDRN) {
+ /* TX Underrun error detected */
+ port_to_dev(port)->stats.tx_errors++;
+ port_to_dev(port)->stats.tx_fifo_errors++;
+ }
+
+ if (stat & ST1_CDCD)
+ sca_set_carrier(port);
+}
+#endif
+
+
+
+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);
+ if (!skb) {
+ dev->stats.rx_dropped++;
+ return;
+ }
+
+ buff = buffer_offset(port, rxin, 0);
+#ifndef ALL_PAGES_ALWAYS_MAPPED
+ page = buff / winsize(card);
+ buff = buff % winsize(card);
+ maxlen = winsize(card) - buff;
+
+ openwin(card, page);
+
+ if (len > maxlen) {
+ memcpy_fromio(skb->data, winbase(card) + buff, maxlen);
+ openwin(card, page + 1);
+ memcpy_fromio(skb->data + maxlen, winbase(card), len - maxlen);
+ } else
+#endif
+ 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);
+#endif
+ 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_rx(skb);
+}
+
+
+
+/* Receive DMA interrupt service */
+static inline void sca_rx_intr(port_t *port)
+{
+ struct net_device *dev = port_to_dev(port);
+ u16 dmac = get_dmac_rx(port);
+ card_t *card = port_to_card(port);
+ u8 stat = sca_in(DSR_RX(phy_node(port)), card); /* read DMA Status */
+
+ /* Reset DSR status bits */
+ sca_out((stat & (DSR_EOT | DSR_EOM | DSR_BOF | DSR_COF)) | DSR_DWE,
+ DSR_RX(phy_node(port)), card);
+
+ if (stat & DSR_BOF)
+ /* Dropped one or more frames */
+ dev->stats.rx_over_errors++;
+
+ while (1) {
+ u32 desc_off = desc_offset(port, port->rxin, 0);
+ pkt_desc __iomem *desc;
+ u32 cda = sca_ina(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);
+
+ /* Set new error descriptor address */
+ sca_outa(desc_off, dmac + EDAL, card);
+ port->rxin = next_desc(port, port->rxin, 0);
+ }
+
+ /* make sure RX DMA is enabled */
+ sca_out(DSR_DE, DSR_RX(phy_node(port)), card);
+}
+
+
+
+/* Transmit DMA interrupt service */
+static inline void sca_tx_intr(port_t *port)
+{
+ struct net_device *dev = port_to_dev(port);
+ u16 dmac = get_dmac_tx(port);
+ card_t* card = port_to_card(port);
+ u8 stat;
+
+ spin_lock(&port->lock);
+
+ stat = sca_in(DSR_TX(phy_node(port)), card); /* read DMA Status */
+
+ /* Reset DSR status bits */
+ sca_out((stat & (DSR_EOT | DSR_EOM | DSR_BOF | DSR_COF)) | DSR_DWE,
+ DSR_TX(phy_node(port)), card);
+
+ while (1) {
+ pkt_desc __iomem *desc;
+
+ u32 desc_off = desc_offset(port, port->txlast, 1);
+ u32 cda = sca_ina(dmac + CDAL, card);
+ if ((cda >= desc_off) && (cda < desc_off + sizeof(pkt_desc)))
+ break; /* Transmitter is/will_be sending this frame */
+
+ desc = desc_address(port, port->txlast, 1);
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += readw(&desc->len);
+ writeb(0, &desc->stat); /* Free descriptor */
+ port->txlast = next_desc(port, port->txlast, 1);
+ }
+
+ netif_wake_queue(dev);
+ spin_unlock(&port->lock);
+}
+
+
+
+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;
+ for (i = 0; i < 2; i++) {
+ port_t *port = get_port(card, i);
+ if (port) {
+ if (stat & SCA_INTR_MSCI(i))
+ sca_msci_intr(port);
+
+ if (stat & SCA_INTR_DMAC_RX(i))
+ sca_rx_intr(port);
+
+ if (stat & SCA_INTR_DMAC_TX(i))
+ sca_tx_intr(port);
+ }
+ }
+ }
+
+#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);
+ u16 msci = get_msci(port);
+ u8 md2 = sca_in(msci + MD2, card);
+ unsigned int tmc, br = 10, brv = 1024;
+
+
+ if (port->settings.clock_rate > 0) {
+ /* Try lower br for better accuracy*/
+ do {
+ br--;
+ brv >>= 1; /* brv = 2^9 = 512 max in specs */
+
+ /* Baud Rate = CLOCK_BASE / TMC / 2^BR */
+ tmc = CLOCK_BASE / brv / port->settings.clock_rate;
+ }while (br > 1 && tmc <= 128);
+
+ if (tmc < 1) {
+ tmc = 1;
+ br = 0; /* For baud=CLOCK_BASE we use tmc=1 br=0 */
+ brv = 1;
+ } else if (tmc > 255)
+ tmc = 256; /* tmc=0 means 256 - low baud rates */
+
+ port->settings.clock_rate = CLOCK_BASE / brv / tmc;
+ } else {
+ br = 9; /* Minimum clock rate */
+ tmc = 256; /* 8bit = 0 */
+ port->settings.clock_rate = CLOCK_BASE / (256 * 512);
+ }
+
+ port->rxs = (port->rxs & ~CLK_BRG_MASK) | br;
+ port->txs = (port->txs & ~CLK_BRG_MASK) | br;
+ 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);
+ sca_out(port->txs, msci + TXS, card);
+
+ if (port->settings.loopback)
+ md2 |= MD2_LOOPBACK;
+ else
+ md2 &= ~MD2_LOOPBACK;
+
+ sca_out(md2, msci + MD2, card);
+
+}
+
+
+
+static void sca_open(struct net_device *dev)
+{
+ port_t *port = dev_to_port(dev);
+ card_t* card = port_to_card(port);
+ u16 msci = get_msci(port);
+ u8 md0, md2;
+
+ switch(port->encoding) {
+ case ENCODING_NRZ: md2 = MD2_NRZ; break;
+ case ENCODING_NRZI: md2 = MD2_NRZI; break;
+ case ENCODING_FM_MARK: md2 = MD2_FM_MARK; break;
+ case ENCODING_FM_SPACE: md2 = MD2_FM_SPACE; break;
+ default: md2 = MD2_MANCHESTER;
+ }
+
+ if (port->settings.loopback)
+ md2 |= MD2_LOOPBACK;
+
+ 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;
+ }
+
+ sca_out(CMD_RESET, msci + CMD, card);
+ sca_out(md0, msci + MD0, card);
+ 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);
+ sca_out(sca_in(IER0, card) | (phy_node(port) ? 0xC0 : 0x0C),
+ IER0, card); /* TXINT and RXINT */
+ /* 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);
+ sca_out(CMD_RX_ENABLE, msci + CMD, card);
+
+ netif_start_queue(dev);
+}
+
+
+
+static void sca_close(struct net_device *dev)
+{
+ port_t *port = dev_to_port(dev);
+ card_t* card = port_to_card(port);
+
+ /* 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)
+{
+ if (encoding != ENCODING_NRZ &&
+ encoding != ENCODING_NRZI &&
+ encoding != ENCODING_FM_MARK &&
+ encoding != ENCODING_FM_SPACE &&
+ encoding != ENCODING_MANCHESTER)
+ return -EINVAL;
+
+ 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;
+
+ dev_to_port(dev)->encoding = encoding;
+ dev_to_port(dev)->parity = parity;
+ return 0;
+}
+
+
+
+#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
+
+#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_in(DSR_RX(phy_node(port)), card), port->rxin,
+ 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_in(DSR_TX(phy_node(port)), card), port->txin, port->txlast,
+ sca_in(DSR_TX(phy_node(port)), card) & DSR_DE ? "" : "in");
+
+ for (cnt = 0; cnt < port_to_card(port)->tx_ring_buffers; cnt++)
+ 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",
+ sca_in(get_msci(port) + MD0, card),
+ sca_in(get_msci(port) + MD1, card),
+ sca_in(get_msci(port) + MD2, card),
+ sca_in(get_msci(port) + ST0, card),
+ 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)
+ 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 */
+ }
+
+#ifdef DEBUG_PKT
+ printk(KERN_DEBUG "%s TX(%i):", dev->name, skb->len);
+ debug_frame(skb);
+#endif
+
+ 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;
+
+ openwin(card, page);
+ if (len > maxlen) {
+ memcpy_toio(winbase(card) + buff, skb->data, maxlen);
+ openwin(card, page + 1);
+ memcpy_toio(winbase(card), skb->data + maxlen, len - maxlen);
+ }
+ else
+#endif
+ memcpy_toio(winbase(card) + buff, skb->data, len);
+
+#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED)
+ openwin(card, 0); /* select pkt_desc table page back */
+#endif
+ writew(len, &desc->len);
+ writeb(ST_TX_EOM, &desc->stat);
+ dev->trans_start = jiffies;
+
+ port->txin = next_desc(port, port->txin, 1);
+ sca_outa(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 */
+
+ desc = desc_address(port, port->txin + 1, 1);
+ if (readb(&desc->stat)) /* allow 1 packet gap */
+ netif_stop_queue(dev);
+
+ spin_unlock_irq(&port->lock);
+
+ dev_kfree_skb(skb);
+ return 0;
+}
+
+
+
+#ifdef NEED_DETECT_RAM
+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);
+
+ 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;
+}
+#endif /* NEED_DETECT_RAM */
+
+
+
+static void __devinit sca_init(card_t *card, int wait_states)
+{
+ sca_out(wait_states, WCRL, card); /* Wait Control */
+ sca_out(wait_states, WCRM, card);
+ sca_out(wait_states, WCRH, card);
+
+ sca_out(0, DMER, card); /* DMA Master disable */
+ sca_out(0x03, PCR, card); /* DMA priority */
+ sca_out(0, DSR_RX(0), card); /* DMA disable - to halt state */
+ sca_out(0, DSR_TX(0), card);
+ sca_out(0, DSR_RX(1), card);
+ sca_out(0, DSR_TX(1), card);
+ sca_out(DMER_DME, DMER, card); /* DMA Master enable */
+}
--- /dev/null
+/*
+ * Hitachi SCA HD64570 and HD64572 common driver for Linux
+ *
+ * Copyright (C) 1998-2003 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.
+ *
+ * Sources of information:
+ * Hitachi HD64570 SCA User's Manual
+ * Hitachi HD64572 SCA-II User's Manual
+ *
+ * We use the following SCA memory map:
+ *
+ * Packet buffer descriptor rings - starting from winbase or win0base:
+ * 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 winbase + 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/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/jiffies.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/in.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/bitops.h>
+
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include <asm/io.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
+
+#define get_msci(port) (phy_node(port) ? MSCI1_OFFSET : MSCI0_OFFSET)
+#define get_dmac_rx(port) (phy_node(port) ? DMAC1RX_OFFSET : DMAC0RX_OFFSET)
+#define get_dmac_tx(port) (phy_node(port) ? DMAC1TX_OFFSET : DMAC0TX_OFFSET)
+
+#define SCA_INTR_MSCI(node) (node ? 0x10 : 0x01)
+#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)
+{
+ return port->dev;
+}
+
+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);
+
+ if (isr1 & 0x03) result |= SCA_INTR_DMAC_RX(0);
+ if (isr1 & 0x0C) result |= SCA_INTR_DMAC_TX(0);
+ if (isr1 & 0x30) result |= SCA_INTR_DMAC_RX(1);
+ if (isr1 & 0xC0) result |= SCA_INTR_DMAC_TX(1);
+ 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);
+ if (!(result & SCA_INTR_DMAC_TX(1)))
+ if (sca_in(DSR_TX(1), card) & DSR_EOM)
+ result |= SCA_INTR_DMAC_TX(1);
+
+ return result;
+}
+
+static inline port_t* dev_to_port(struct net_device *dev)
+{
+ return dev_to_hdlc(dev)->priv;
+}
+
+static inline u16 next_desc(port_t *port, u16 desc, int transmit)
+{
+ return (desc + 1) % (transmit ? port_to_card(port)->tx_ring_buffers
+ : port_to_card(port)->rx_ring_buffers);
+}
+
+
+
+static inline u16 desc_abs_number(port_t *port, u16 desc, int transmit)
+{
+ u16 rx_buffs = port_to_card(port)->rx_ring_buffers;
+ u16 tx_buffs = port_to_card(port)->tx_ring_buffers;
+
+ desc %= (transmit ? tx_buffs : rx_buffs); // called with "X + 1" etc.
+ return log_node(port) * (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 bytes */
+ return desc_abs_number(port, desc, transmit) * sizeof(pkt_desc);
+}
+
+
+
+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));
+#else
+ return (pkt_desc __iomem *)(winbase(port_to_card(port))
+ + 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 +
+ 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_to_card(port)) & ST3_DCD)) {
+#ifdef DEBUG_LINK
+ printk(KERN_DEBUG "%s: sca_set_carrier on\n",
+ port_to_dev(port)->name);
+#endif
+ netif_carrier_on(port_to_dev(port));
+ } else {
+#ifdef DEBUG_LINK
+ printk(KERN_DEBUG "%s: sca_set_carrier off\n",
+ port_to_dev(port)->name);
+#endif
+ netif_carrier_off(port_to_dev(port));
+ }
+}
+
+
+static void sca_init_sync_port(port_t *port)
+{
+ card_t *card = port_to_card(port);
+ int transmit, i;
+
+ port->rxin = 0;
+ port->txin = 0;
+ port->txlast = 0;
+
+#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED)
+ openwin(card, 0);
+#endif
+
+ for (transmit = 0; transmit < 2; transmit++) {
+ u16 dmac = transmit ? get_dmac_tx(port) : get_dmac_rx(port);
+ 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);
+
+ writea(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, transmit ? DSR_TX(phy_node(port)) :
+ DSR_RX(phy_node(port)), card);
+ /* software ABORT - to initial state */
+ 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);
+ if (!transmit)
+ sca_outa(desc_offset(port, buffs - 1, transmit),
+ dmac + EDAL, card);
+ else
+ sca_outa(desc_offset(port, 0, transmit), dmac + EDAL,
+ card);
+
+ /* clear frame end interrupt counter */
+ sca_out(DCR_CLEAR_EOF, transmit ? DCR_TX(phy_node(port)) :
+ DCR_RX(phy_node(port)), card);
+
+ if (!transmit) { /* Receive */
+ /* set buffer length */
+ sca_outw(HDLC_MAX_MRU, dmac + BFLL, card);
+ /* Chain mode, Multi-frame */
+ sca_out(0x14, DMR_RX(phy_node(port)), card);
+ sca_out(DIR_EOME | DIR_BOFE, DIR_RX(phy_node(port)),
+ card);
+ /* DMA enable */
+ sca_out(DSR_DE, DSR_RX(phy_node(port)), card);
+ } else { /* Transmit */
+ /* Chain mode, Multi-frame */
+ sca_out(0x14, DMR_TX(phy_node(port)), card);
+ /* enable underflow interrupts */
+ sca_out(DIR_BOFE, DIR_TX(phy_node(port)), card);
+ }
+ }
+ sca_set_carrier(port);
+}
+
+
+
+#ifdef NEED_SCA_MSCI_INTR
+/* MSCI interrupt service */
+static inline void sca_msci_intr(port_t *port)
+{
+ u16 msci = get_msci(port);
+ card_t* card = port_to_card(port);
+ u8 stat = sca_in(msci + ST1, card); /* read MSCI ST1 status */
+
+ /* Reset MSCI TX underrun and CDCD status bit */
+ sca_out(stat & (ST1_UDRN | ST1_CDCD), msci + ST1, card);
+
+ if (stat & ST1_UDRN) {
+ /* TX Underrun error detected */
+ port_to_dev(port)->stats.tx_errors++;
+ port_to_dev(port)->stats.tx_fifo_errors++;
+ }
+
+ if (stat & ST1_CDCD)
+ sca_set_carrier(port);
+}
+#endif
+
+
+
+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);
+ if (!skb) {
+ dev->stats.rx_dropped++;
+ return;
+ }
+
+ buff = buffer_offset(port, rxin, 0);
+#ifndef ALL_PAGES_ALWAYS_MAPPED
+ page = buff / winsize(card);
+ buff = buff % winsize(card);
+ maxlen = winsize(card) - buff;
+
+ openwin(card, page);
+
+ if (len > maxlen) {
+ memcpy_fromio(skb->data, winbase(card) + buff, maxlen);
+ openwin(card, page + 1);
+ memcpy_fromio(skb->data + maxlen, winbase(card), len - maxlen);
+ } else
+#endif
+ 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);
+#endif
+ 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_rx(skb);
+}
+
+
+
+/* Receive DMA interrupt service */
+static inline void sca_rx_intr(port_t *port)
+{
+ struct net_device *dev = port_to_dev(port);
+ u16 dmac = get_dmac_rx(port);
+ card_t *card = port_to_card(port);
+ u8 stat = sca_in(DSR_RX(phy_node(port)), card); /* read DMA Status */
+
+ /* Reset DSR status bits */
+ sca_out((stat & (DSR_EOT | DSR_EOM | DSR_BOF | DSR_COF)) | DSR_DWE,
+ DSR_RX(phy_node(port)), card);
+
+ if (stat & DSR_BOF)
+ /* Dropped one or more frames */
+ dev->stats.rx_over_errors++;
+
+ while (1) {
+ u32 desc_off = desc_offset(port, port->rxin, 0);
+ pkt_desc __iomem *desc;
+ u32 cda = sca_ina(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);
+
+ /* Set new error descriptor address */
+ sca_outa(desc_off, dmac + EDAL, card);
+ port->rxin = next_desc(port, port->rxin, 0);
+ }
+
+ /* make sure RX DMA is enabled */
+ sca_out(DSR_DE, DSR_RX(phy_node(port)), card);
+}
+
+
+
+/* Transmit DMA interrupt service */
+static inline void sca_tx_intr(port_t *port)
+{
+ struct net_device *dev = port_to_dev(port);
+ u16 dmac = get_dmac_tx(port);
+ card_t* card = port_to_card(port);
+ u8 stat;
+
+ spin_lock(&port->lock);
+
+ stat = sca_in(DSR_TX(phy_node(port)), card); /* read DMA Status */
+
+ /* Reset DSR status bits */
+ sca_out((stat & (DSR_EOT | DSR_EOM | DSR_BOF | DSR_COF)) | DSR_DWE,
+ DSR_TX(phy_node(port)), card);
+
+ while (1) {
+ pkt_desc __iomem *desc;
+
+ u32 desc_off = desc_offset(port, port->txlast, 1);
+ u32 cda = sca_ina(dmac + CDAL, card);
+ if ((cda >= desc_off) && (cda < desc_off + sizeof(pkt_desc)))
+ break; /* Transmitter is/will_be sending this frame */
+
+ desc = desc_address(port, port->txlast, 1);
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += readw(&desc->len);
+ writeb(0, &desc->stat); /* Free descriptor */
+ port->txlast = next_desc(port, port->txlast, 1);
+ }
+
+ netif_wake_queue(dev);
+ spin_unlock(&port->lock);
+}
+
+
+
+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;
+ for (i = 0; i < 2; i++) {
+ port_t *port = get_port(card, i);
+ if (port) {
+ if (stat & SCA_INTR_MSCI(i))
+ sca_msci_intr(port);
+
+ if (stat & SCA_INTR_DMAC_RX(i))
+ sca_rx_intr(port);
+
+ if (stat & SCA_INTR_DMAC_TX(i))
+ sca_tx_intr(port);
+ }
+ }
+ }
+
+#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);
+ u16 msci = get_msci(port);
+ u8 md2 = sca_in(msci + MD2, card);
+ unsigned int tmc, br = 10, brv = 1024;
+
+
+ if (port->settings.clock_rate > 0) {
+ /* Try lower br for better accuracy*/
+ do {
+ br--;
+ brv >>= 1; /* brv = 2^9 = 512 max in specs */
+
+ /* Baud Rate = CLOCK_BASE / TMC / 2^BR */
+ tmc = CLOCK_BASE / brv / port->settings.clock_rate;
+ }while (br > 1 && tmc <= 128);
+
+ if (tmc < 1) {
+ tmc = 1;
+ br = 0; /* For baud=CLOCK_BASE we use tmc=1 br=0 */
+ brv = 1;
+ } else if (tmc > 255)
+ tmc = 256; /* tmc=0 means 256 - low baud rates */
+
+ port->settings.clock_rate = CLOCK_BASE / brv / tmc;
+ } else {
+ br = 9; /* Minimum clock rate */
+ tmc = 256; /* 8bit = 0 */
+ port->settings.clock_rate = CLOCK_BASE / (256 * 512);
+ }
+
+ port->rxs = (port->rxs & ~CLK_BRG_MASK) | br;
+ port->txs = (port->txs & ~CLK_BRG_MASK) | br;
+ 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);
+ sca_out(port->txs, msci + TXS, card);
+
+ if (port->settings.loopback)
+ md2 |= MD2_LOOPBACK;
+ else
+ md2 &= ~MD2_LOOPBACK;
+
+ sca_out(md2, msci + MD2, card);
+
+}
+
+
+
+static void sca_open(struct net_device *dev)
+{
+ port_t *port = dev_to_port(dev);
+ card_t* card = port_to_card(port);
+ u16 msci = get_msci(port);
+ u8 md0, md2;
+
+ switch(port->encoding) {
+ case ENCODING_NRZ: md2 = MD2_NRZ; break;
+ case ENCODING_NRZI: md2 = MD2_NRZI; break;
+ case ENCODING_FM_MARK: md2 = MD2_FM_MARK; break;
+ case ENCODING_FM_SPACE: md2 = MD2_FM_SPACE; break;
+ default: md2 = MD2_MANCHESTER;
+ }
+
+ if (port->settings.loopback)
+ md2 |= MD2_LOOPBACK;
+
+ 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;
+ }
+
+ sca_out(CMD_RESET, msci + CMD, card);
+ sca_out(md0, msci + MD0, card);
+ 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);
+ sca_out(sca_in(IER0, card) | (phy_node(port) ? 0xC0 : 0x0C),
+ IER0, card); /* TXINT and RXINT */
+ /* 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);
+ sca_out(CMD_RX_ENABLE, msci + CMD, card);
+
+ netif_start_queue(dev);
+}
+
+
+
+static void sca_close(struct net_device *dev)
+{
+ port_t *port = dev_to_port(dev);
+ card_t* card = port_to_card(port);
+
+ /* 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)
+{
+ if (encoding != ENCODING_NRZ &&
+ encoding != ENCODING_NRZI &&
+ encoding != ENCODING_FM_MARK &&
+ encoding != ENCODING_FM_SPACE &&
+ encoding != ENCODING_MANCHESTER)
+ return -EINVAL;
+
+ 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;
+
+ dev_to_port(dev)->encoding = encoding;
+ dev_to_port(dev)->parity = parity;
+ return 0;
+}
+
+
+
+#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
+
+#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_in(DSR_RX(phy_node(port)), card), port->rxin,
+ 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_in(DSR_TX(phy_node(port)), card), port->txin, port->txlast,
+ sca_in(DSR_TX(phy_node(port)), card) & DSR_DE ? "" : "in");
+
+ for (cnt = 0; cnt < port_to_card(port)->tx_ring_buffers; cnt++)
+ 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",
+ sca_in(get_msci(port) + MD0, card),
+ sca_in(get_msci(port) + MD1, card),
+ sca_in(get_msci(port) + MD2, card),
+ sca_in(get_msci(port) + ST0, card),
+ 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)
+ 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 */
+ }
+
+#ifdef DEBUG_PKT
+ printk(KERN_DEBUG "%s TX(%i):", dev->name, skb->len);
+ debug_frame(skb);
+#endif
+
+ 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;
+
+ openwin(card, page);
+ if (len > maxlen) {
+ memcpy_toio(winbase(card) + buff, skb->data, maxlen);
+ openwin(card, page + 1);
+ memcpy_toio(winbase(card), skb->data + maxlen, len - maxlen);
+ }
+ else
+#endif
+ memcpy_toio(winbase(card) + buff, skb->data, len);
+
+#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED)
+ openwin(card, 0); /* select pkt_desc table page back */
+#endif
+ writew(len, &desc->len);
+ writeb(ST_TX_EOM, &desc->stat);
+ dev->trans_start = jiffies;
+
+ port->txin = next_desc(port, port->txin, 1);
+ sca_outa(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 */
+
+ desc = desc_address(port, port->txin + 1, 1);
+ if (readb(&desc->stat)) /* allow 1 packet gap */
+ netif_stop_queue(dev);
+
+ spin_unlock_irq(&port->lock);
+
+ dev_kfree_skb(skb);
+ return 0;
+}
+
+
+
+#ifdef NEED_DETECT_RAM
+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);
+
+ 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;
+}
+#endif /* NEED_DETECT_RAM */
+
+
+
+static void __devinit sca_init(card_t *card, int wait_states)
+{
+ sca_out(wait_states, WCRL, card); /* Wait Control */
+ sca_out(wait_states, WCRM, card);
+ sca_out(wait_states, WCRH, card);
+
+ sca_out(0, DMER, card); /* DMA Master disable */
+ sca_out(0x03, PCR, card); /* DMA priority */
+ sca_out(0, DSR_RX(0), card); /* DMA disable - to halt state */
+ sca_out(0, DSR_TX(0), card);
+ sca_out(0, DSR_RX(1), card);
+ sca_out(0, DSR_TX(1), card);
+ sca_out(DMER_DME, DMER, card); /* DMA Master enable */
+}
+++ /dev/null
-/*
- * Hitachi SCA HD64570 and HD64572 common driver for Linux
- *
- * Copyright (C) 1998-2003 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.
- *
- * Sources of information:
- * Hitachi HD64570 SCA User's Manual
- * Hitachi HD64572 SCA-II User's Manual
- *
- * We use the following SCA memory map:
- *
- * Packet buffer descriptor rings - starting from winbase or win0base:
- * 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 winbase + 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/module.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/jiffies.h>
-#include <linux/types.h>
-#include <linux/fcntl.h>
-#include <linux/interrupt.h>
-#include <linux/in.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/bitops.h>
-
-#include <asm/system.h>
-#include <asm/uaccess.h>
-#include <asm/io.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
-
-#define get_msci(port) (phy_node(port) ? MSCI1_OFFSET : MSCI0_OFFSET)
-#define get_dmac_rx(port) (phy_node(port) ? DMAC1RX_OFFSET : DMAC0RX_OFFSET)
-#define get_dmac_tx(port) (phy_node(port) ? DMAC1TX_OFFSET : DMAC0TX_OFFSET)
-
-#define SCA_INTR_MSCI(node) (node ? 0x10 : 0x01)
-#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)
-{
- return port->dev;
-}
-
-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);
-
- if (isr1 & 0x03) result |= SCA_INTR_DMAC_RX(0);
- if (isr1 & 0x0C) result |= SCA_INTR_DMAC_TX(0);
- if (isr1 & 0x30) result |= SCA_INTR_DMAC_RX(1);
- if (isr1 & 0xC0) result |= SCA_INTR_DMAC_TX(1);
- 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);
- if (!(result & SCA_INTR_DMAC_TX(1)))
- if (sca_in(DSR_TX(1), card) & DSR_EOM)
- result |= SCA_INTR_DMAC_TX(1);
-
- return result;
-}
-
-static inline port_t* dev_to_port(struct net_device *dev)
-{
- return dev_to_hdlc(dev)->priv;
-}
-
-static inline u16 next_desc(port_t *port, u16 desc, int transmit)
-{
- return (desc + 1) % (transmit ? port_to_card(port)->tx_ring_buffers
- : port_to_card(port)->rx_ring_buffers);
-}
-
-
-
-static inline u16 desc_abs_number(port_t *port, u16 desc, int transmit)
-{
- u16 rx_buffs = port_to_card(port)->rx_ring_buffers;
- u16 tx_buffs = port_to_card(port)->tx_ring_buffers;
-
- desc %= (transmit ? tx_buffs : rx_buffs); // called with "X + 1" etc.
- return log_node(port) * (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 bytes */
- return desc_abs_number(port, desc, transmit) * sizeof(pkt_desc);
-}
-
-
-
-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));
-#else
- return (pkt_desc __iomem *)(winbase(port_to_card(port))
- + 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 +
- 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_to_card(port)) & ST3_DCD)) {
-#ifdef DEBUG_LINK
- printk(KERN_DEBUG "%s: sca_set_carrier on\n",
- port_to_dev(port)->name);
-#endif
- netif_carrier_on(port_to_dev(port));
- } else {
-#ifdef DEBUG_LINK
- printk(KERN_DEBUG "%s: sca_set_carrier off\n",
- port_to_dev(port)->name);
-#endif
- netif_carrier_off(port_to_dev(port));
- }
-}
-
-
-static void sca_init_sync_port(port_t *port)
-{
- card_t *card = port_to_card(port);
- int transmit, i;
-
- port->rxin = 0;
- port->txin = 0;
- port->txlast = 0;
-
-#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED)
- openwin(card, 0);
-#endif
-
- for (transmit = 0; transmit < 2; transmit++) {
- u16 dmac = transmit ? get_dmac_tx(port) : get_dmac_rx(port);
- 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);
-
- writea(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, transmit ? DSR_TX(phy_node(port)) :
- DSR_RX(phy_node(port)), card);
- /* software ABORT - to initial state */
- 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);
- if (!transmit)
- sca_outa(desc_offset(port, buffs - 1, transmit),
- dmac + EDAL, card);
- else
- sca_outa(desc_offset(port, 0, transmit), dmac + EDAL,
- card);
-
- /* clear frame end interrupt counter */
- sca_out(DCR_CLEAR_EOF, transmit ? DCR_TX(phy_node(port)) :
- DCR_RX(phy_node(port)), card);
-
- if (!transmit) { /* Receive */
- /* set buffer length */
- sca_outw(HDLC_MAX_MRU, dmac + BFLL, card);
- /* Chain mode, Multi-frame */
- sca_out(0x14, DMR_RX(phy_node(port)), card);
- sca_out(DIR_EOME | DIR_BOFE, DIR_RX(phy_node(port)),
- card);
- /* DMA enable */
- sca_out(DSR_DE, DSR_RX(phy_node(port)), card);
- } else { /* Transmit */
- /* Chain mode, Multi-frame */
- sca_out(0x14, DMR_TX(phy_node(port)), card);
- /* enable underflow interrupts */
- sca_out(DIR_BOFE, DIR_TX(phy_node(port)), card);
- }
- }
- sca_set_carrier(port);
-}
-
-
-
-#ifdef NEED_SCA_MSCI_INTR
-/* MSCI interrupt service */
-static inline void sca_msci_intr(port_t *port)
-{
- u16 msci = get_msci(port);
- card_t* card = port_to_card(port);
- u8 stat = sca_in(msci + ST1, card); /* read MSCI ST1 status */
-
- /* Reset MSCI TX underrun and CDCD status bit */
- sca_out(stat & (ST1_UDRN | ST1_CDCD), msci + ST1, card);
-
- if (stat & ST1_UDRN) {
- /* TX Underrun error detected */
- port_to_dev(port)->stats.tx_errors++;
- port_to_dev(port)->stats.tx_fifo_errors++;
- }
-
- if (stat & ST1_CDCD)
- sca_set_carrier(port);
-}
-#endif
-
-
-
-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);
- if (!skb) {
- dev->stats.rx_dropped++;
- return;
- }
-
- buff = buffer_offset(port, rxin, 0);
-#ifndef ALL_PAGES_ALWAYS_MAPPED
- page = buff / winsize(card);
- buff = buff % winsize(card);
- maxlen = winsize(card) - buff;
-
- openwin(card, page);
-
- if (len > maxlen) {
- memcpy_fromio(skb->data, winbase(card) + buff, maxlen);
- openwin(card, page + 1);
- memcpy_fromio(skb->data + maxlen, winbase(card), len - maxlen);
- } else
-#endif
- 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);
-#endif
- 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_rx(skb);
-}
-
-
-
-/* Receive DMA interrupt service */
-static inline void sca_rx_intr(port_t *port)
-{
- struct net_device *dev = port_to_dev(port);
- u16 dmac = get_dmac_rx(port);
- card_t *card = port_to_card(port);
- u8 stat = sca_in(DSR_RX(phy_node(port)), card); /* read DMA Status */
-
- /* Reset DSR status bits */
- sca_out((stat & (DSR_EOT | DSR_EOM | DSR_BOF | DSR_COF)) | DSR_DWE,
- DSR_RX(phy_node(port)), card);
-
- if (stat & DSR_BOF)
- /* Dropped one or more frames */
- dev->stats.rx_over_errors++;
-
- while (1) {
- u32 desc_off = desc_offset(port, port->rxin, 0);
- pkt_desc __iomem *desc;
- u32 cda = sca_ina(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);
-
- /* Set new error descriptor address */
- sca_outa(desc_off, dmac + EDAL, card);
- port->rxin = next_desc(port, port->rxin, 0);
- }
-
- /* make sure RX DMA is enabled */
- sca_out(DSR_DE, DSR_RX(phy_node(port)), card);
-}
-
-
-
-/* Transmit DMA interrupt service */
-static inline void sca_tx_intr(port_t *port)
-{
- struct net_device *dev = port_to_dev(port);
- u16 dmac = get_dmac_tx(port);
- card_t* card = port_to_card(port);
- u8 stat;
-
- spin_lock(&port->lock);
-
- stat = sca_in(DSR_TX(phy_node(port)), card); /* read DMA Status */
-
- /* Reset DSR status bits */
- sca_out((stat & (DSR_EOT | DSR_EOM | DSR_BOF | DSR_COF)) | DSR_DWE,
- DSR_TX(phy_node(port)), card);
-
- while (1) {
- pkt_desc __iomem *desc;
-
- u32 desc_off = desc_offset(port, port->txlast, 1);
- u32 cda = sca_ina(dmac + CDAL, card);
- if ((cda >= desc_off) && (cda < desc_off + sizeof(pkt_desc)))
- break; /* Transmitter is/will_be sending this frame */
-
- desc = desc_address(port, port->txlast, 1);
- dev->stats.tx_packets++;
- dev->stats.tx_bytes += readw(&desc->len);
- writeb(0, &desc->stat); /* Free descriptor */
- port->txlast = next_desc(port, port->txlast, 1);
- }
-
- netif_wake_queue(dev);
- spin_unlock(&port->lock);
-}
-
-
-
-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;
- for (i = 0; i < 2; i++) {
- port_t *port = get_port(card, i);
- if (port) {
- if (stat & SCA_INTR_MSCI(i))
- sca_msci_intr(port);
-
- if (stat & SCA_INTR_DMAC_RX(i))
- sca_rx_intr(port);
-
- if (stat & SCA_INTR_DMAC_TX(i))
- sca_tx_intr(port);
- }
- }
- }
-
-#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);
- u16 msci = get_msci(port);
- u8 md2 = sca_in(msci + MD2, card);
- unsigned int tmc, br = 10, brv = 1024;
-
-
- if (port->settings.clock_rate > 0) {
- /* Try lower br for better accuracy*/
- do {
- br--;
- brv >>= 1; /* brv = 2^9 = 512 max in specs */
-
- /* Baud Rate = CLOCK_BASE / TMC / 2^BR */
- tmc = CLOCK_BASE / brv / port->settings.clock_rate;
- }while (br > 1 && tmc <= 128);
-
- if (tmc < 1) {
- tmc = 1;
- br = 0; /* For baud=CLOCK_BASE we use tmc=1 br=0 */
- brv = 1;
- } else if (tmc > 255)
- tmc = 256; /* tmc=0 means 256 - low baud rates */
-
- port->settings.clock_rate = CLOCK_BASE / brv / tmc;
- } else {
- br = 9; /* Minimum clock rate */
- tmc = 256; /* 8bit = 0 */
- port->settings.clock_rate = CLOCK_BASE / (256 * 512);
- }
-
- port->rxs = (port->rxs & ~CLK_BRG_MASK) | br;
- port->txs = (port->txs & ~CLK_BRG_MASK) | br;
- 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);
- sca_out(port->txs, msci + TXS, card);
-
- if (port->settings.loopback)
- md2 |= MD2_LOOPBACK;
- else
- md2 &= ~MD2_LOOPBACK;
-
- sca_out(md2, msci + MD2, card);
-
-}
-
-
-
-static void sca_open(struct net_device *dev)
-{
- port_t *port = dev_to_port(dev);
- card_t* card = port_to_card(port);
- u16 msci = get_msci(port);
- u8 md0, md2;
-
- switch(port->encoding) {
- case ENCODING_NRZ: md2 = MD2_NRZ; break;
- case ENCODING_NRZI: md2 = MD2_NRZI; break;
- case ENCODING_FM_MARK: md2 = MD2_FM_MARK; break;
- case ENCODING_FM_SPACE: md2 = MD2_FM_SPACE; break;
- default: md2 = MD2_MANCHESTER;
- }
-
- if (port->settings.loopback)
- md2 |= MD2_LOOPBACK;
-
- 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;
- }
-
- sca_out(CMD_RESET, msci + CMD, card);
- sca_out(md0, msci + MD0, card);
- 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);
- sca_out(sca_in(IER0, card) | (phy_node(port) ? 0xC0 : 0x0C),
- IER0, card); /* TXINT and RXINT */
- /* 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);
- sca_out(CMD_RX_ENABLE, msci + CMD, card);
-
- netif_start_queue(dev);
-}
-
-
-
-static void sca_close(struct net_device *dev)
-{
- port_t *port = dev_to_port(dev);
- card_t* card = port_to_card(port);
-
- /* 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)
-{
- if (encoding != ENCODING_NRZ &&
- encoding != ENCODING_NRZI &&
- encoding != ENCODING_FM_MARK &&
- encoding != ENCODING_FM_SPACE &&
- encoding != ENCODING_MANCHESTER)
- return -EINVAL;
-
- 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;
-
- dev_to_port(dev)->encoding = encoding;
- dev_to_port(dev)->parity = parity;
- return 0;
-}
-
-
-
-#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
-
-#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_in(DSR_RX(phy_node(port)), card), port->rxin,
- 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_in(DSR_TX(phy_node(port)), card), port->txin, port->txlast,
- sca_in(DSR_TX(phy_node(port)), card) & DSR_DE ? "" : "in");
-
- for (cnt = 0; cnt < port_to_card(port)->tx_ring_buffers; cnt++)
- 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",
- sca_in(get_msci(port) + MD0, card),
- sca_in(get_msci(port) + MD1, card),
- sca_in(get_msci(port) + MD2, card),
- sca_in(get_msci(port) + ST0, card),
- 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)
- 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 */
- }
-
-#ifdef DEBUG_PKT
- printk(KERN_DEBUG "%s TX(%i):", dev->name, skb->len);
- debug_frame(skb);
-#endif
-
- 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;
-
- openwin(card, page);
- if (len > maxlen) {
- memcpy_toio(winbase(card) + buff, skb->data, maxlen);
- openwin(card, page + 1);
- memcpy_toio(winbase(card), skb->data + maxlen, len - maxlen);
- }
- else
-#endif
- memcpy_toio(winbase(card) + buff, skb->data, len);
-
-#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED)
- openwin(card, 0); /* select pkt_desc table page back */
-#endif
- writew(len, &desc->len);
- writeb(ST_TX_EOM, &desc->stat);
- dev->trans_start = jiffies;
-
- port->txin = next_desc(port, port->txin, 1);
- sca_outa(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 */
-
- desc = desc_address(port, port->txin + 1, 1);
- if (readb(&desc->stat)) /* allow 1 packet gap */
- netif_stop_queue(dev);
-
- spin_unlock_irq(&port->lock);
-
- dev_kfree_skb(skb);
- return 0;
-}
-
-
-
-#ifdef NEED_DETECT_RAM
-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);
-
- 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;
-}
-#endif /* NEED_DETECT_RAM */
-
-
-
-static void __devinit sca_init(card_t *card, int wait_states)
-{
- sca_out(wait_states, WCRL, card); /* Wait Control */
- sca_out(wait_states, WCRM, card);
- sca_out(wait_states, WCRH, card);
-
- sca_out(0, DMER, card); /* DMA Master disable */
- sca_out(0x03, PCR, card); /* DMA priority */
- sca_out(0, DSR_RX(0), card); /* DMA disable - to halt state */
- sca_out(0, DSR_TX(0), card);
- sca_out(0, DSR_RX(1), card);
- sca_out(0, DSR_TX(1), card);
- sca_out(DMER_DME, DMER, card); /* DMA Master enable */
-}
-#include "hd6457x.c"
+#include "hd64570.c"
#define get_port(card, port) ((port) < (card)->n_ports ? \
(&(card)->ports[port]) : (NULL))
-#include "hd6457x.c"
+#include "hd64572.c"
static void pc300_set_iface(port_t *port)
#undef memcpy_toio
#define memcpy_toio new_memcpy_toio
-#include "hd6457x.c"
+#include "hd64572.c"
static void pci200_set_iface(port_t *port)
projects / openwrt / staging / blogic.git / commitdiff