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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/net/wan/wanxl.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/wan/wanxl.c')
-rw-r--r--drivers/net/wan/wanxl.c844
1 files changed, 844 insertions, 0 deletions
diff --git a/drivers/net/wan/wanxl.c b/drivers/net/wan/wanxl.c
new file mode 100644
index 0000000000..5a9e262188
--- /dev/null
+++ b/drivers/net/wan/wanxl.c
@@ -0,0 +1,844 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * wanXL serial card driver for Linux
+ * host part
+ *
+ * Copyright (C) 2003 Krzysztof Halasa <khc@pm.waw.pl>
+ *
+ * Status:
+ * - Only DTE (external clock) support with NRZ and NRZI encodings
+ * - wanXL100 will require minor driver modifications, no access to hw
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/netdevice.h>
+#include <linux/hdlc.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+
+#include "wanxl.h"
+
+static const char *version = "wanXL serial card driver version: 0.48";
+
+#define PLX_CTL_RESET 0x40000000 /* adapter reset */
+
+#undef DEBUG_PKT
+#undef DEBUG_PCI
+
+/* MAILBOX #1 - PUTS COMMANDS */
+#define MBX1_CMD_ABORTJ 0x85000000 /* Abort and Jump */
+#ifdef __LITTLE_ENDIAN
+#define MBX1_CMD_BSWAP 0x8C000001 /* little-endian Byte Swap Mode */
+#else
+#define MBX1_CMD_BSWAP 0x8C000000 /* big-endian Byte Swap Mode */
+#endif
+
+/* MAILBOX #2 - DRAM SIZE */
+#define MBX2_MEMSZ_MASK 0xFFFF0000 /* PUTS Memory Size Register mask */
+
+struct port {
+ struct net_device *dev;
+ struct card *card;
+ spinlock_t lock; /* for wanxl_xmit */
+ int node; /* physical port #0 - 3 */
+ unsigned int clock_type;
+ int tx_in, tx_out;
+ struct sk_buff *tx_skbs[TX_BUFFERS];
+};
+
+struct card_status {
+ desc_t rx_descs[RX_QUEUE_LENGTH];
+ port_status_t port_status[4];
+};
+
+struct card {
+ int n_ports; /* 1, 2 or 4 ports */
+ u8 irq;
+
+ u8 __iomem *plx; /* PLX PCI9060 virtual base address */
+ struct pci_dev *pdev; /* for pci_name(pdev) */
+ int rx_in;
+ struct sk_buff *rx_skbs[RX_QUEUE_LENGTH];
+ struct card_status *status; /* shared between host and card */
+ dma_addr_t status_address;
+ struct port ports[]; /* 1 - 4 port structures follow */
+};
+
+static inline struct port *dev_to_port(struct net_device *dev)
+{
+ return (struct port *)dev_to_hdlc(dev)->priv;
+}
+
+static inline port_status_t *get_status(struct port *port)
+{
+ return &port->card->status->port_status[port->node];
+}
+
+#ifdef DEBUG_PCI
+static inline dma_addr_t pci_map_single_debug(struct pci_dev *pdev, void *ptr,
+ size_t size, int direction)
+{
+ dma_addr_t addr = dma_map_single(&pdev->dev, ptr, size, direction);
+
+ if (addr + size > 0x100000000LL)
+ pr_crit("%s: pci_map_single() returned memory at 0x%llx!\n",
+ pci_name(pdev), (unsigned long long)addr);
+ return addr;
+}
+
+#undef pci_map_single
+#define pci_map_single pci_map_single_debug
+#endif
+
+/* Cable and/or personality module change interrupt service */
+static inline void wanxl_cable_intr(struct port *port)
+{
+ u32 value = get_status(port)->cable;
+ int valid = 1;
+ const char *cable, *pm, *dte = "", *dsr = "", *dcd = "";
+
+ switch (value & 0x7) {
+ case STATUS_CABLE_V35:
+ cable = "V.35";
+ break;
+ case STATUS_CABLE_X21:
+ cable = "X.21";
+ break;
+ case STATUS_CABLE_V24:
+ cable = "V.24";
+ break;
+ case STATUS_CABLE_EIA530:
+ cable = "EIA530";
+ break;
+ case STATUS_CABLE_NONE:
+ cable = "no";
+ break;
+ default:
+ cable = "invalid";
+ }
+
+ switch ((value >> STATUS_CABLE_PM_SHIFT) & 0x7) {
+ case STATUS_CABLE_V35:
+ pm = "V.35";
+ break;
+ case STATUS_CABLE_X21:
+ pm = "X.21";
+ break;
+ case STATUS_CABLE_V24:
+ pm = "V.24";
+ break;
+ case STATUS_CABLE_EIA530:
+ pm = "EIA530";
+ break;
+ case STATUS_CABLE_NONE:
+ pm = "no personality";
+ valid = 0;
+ break;
+ default:
+ pm = "invalid personality";
+ valid = 0;
+ }
+
+ if (valid) {
+ if ((value & 7) == ((value >> STATUS_CABLE_PM_SHIFT) & 7)) {
+ dsr = (value & STATUS_CABLE_DSR) ? ", DSR ON" :
+ ", DSR off";
+ dcd = (value & STATUS_CABLE_DCD) ? ", carrier ON" :
+ ", carrier off";
+ }
+ dte = (value & STATUS_CABLE_DCE) ? " DCE" : " DTE";
+ }
+ netdev_info(port->dev, "%s%s module, %s cable%s%s\n",
+ pm, dte, cable, dsr, dcd);
+
+ if (value & STATUS_CABLE_DCD)
+ netif_carrier_on(port->dev);
+ else
+ netif_carrier_off(port->dev);
+}
+
+/* Transmit complete interrupt service */
+static inline void wanxl_tx_intr(struct port *port)
+{
+ struct net_device *dev = port->dev;
+
+ while (1) {
+ desc_t *desc = &get_status(port)->tx_descs[port->tx_in];
+ struct sk_buff *skb = port->tx_skbs[port->tx_in];
+
+ switch (desc->stat) {
+ case PACKET_FULL:
+ case PACKET_EMPTY:
+ netif_wake_queue(dev);
+ return;
+
+ case PACKET_UNDERRUN:
+ dev->stats.tx_errors++;
+ dev->stats.tx_fifo_errors++;
+ break;
+
+ default:
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += skb->len;
+ }
+ desc->stat = PACKET_EMPTY; /* Free descriptor */
+ dma_unmap_single(&port->card->pdev->dev, desc->address,
+ skb->len, DMA_TO_DEVICE);
+ dev_consume_skb_irq(skb);
+ port->tx_in = (port->tx_in + 1) % TX_BUFFERS;
+ }
+}
+
+/* Receive complete interrupt service */
+static inline void wanxl_rx_intr(struct card *card)
+{
+ desc_t *desc;
+
+ while (desc = &card->status->rx_descs[card->rx_in],
+ desc->stat != PACKET_EMPTY) {
+ if ((desc->stat & PACKET_PORT_MASK) > card->n_ports) {
+ pr_crit("%s: received packet for nonexistent port\n",
+ pci_name(card->pdev));
+ } else {
+ struct sk_buff *skb = card->rx_skbs[card->rx_in];
+ struct port *port = &card->ports[desc->stat &
+ PACKET_PORT_MASK];
+ struct net_device *dev = port->dev;
+
+ if (!skb) {
+ dev->stats.rx_dropped++;
+ } else {
+ dma_unmap_single(&card->pdev->dev,
+ desc->address, BUFFER_LENGTH,
+ DMA_FROM_DEVICE);
+ skb_put(skb, desc->length);
+
+#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);
+ skb = NULL;
+ }
+
+ if (!skb) {
+ skb = dev_alloc_skb(BUFFER_LENGTH);
+ desc->address = skb ?
+ dma_map_single(&card->pdev->dev,
+ skb->data,
+ BUFFER_LENGTH,
+ DMA_FROM_DEVICE) : 0;
+ card->rx_skbs[card->rx_in] = skb;
+ }
+ }
+ desc->stat = PACKET_EMPTY; /* Free descriptor */
+ card->rx_in = (card->rx_in + 1) % RX_QUEUE_LENGTH;
+ }
+}
+
+static irqreturn_t wanxl_intr(int irq, void *dev_id)
+{
+ struct card *card = dev_id;
+ int i;
+ u32 stat;
+ int handled = 0;
+
+ while ((stat = readl(card->plx + PLX_DOORBELL_FROM_CARD)) != 0) {
+ handled = 1;
+ writel(stat, card->plx + PLX_DOORBELL_FROM_CARD);
+
+ for (i = 0; i < card->n_ports; i++) {
+ if (stat & (1 << (DOORBELL_FROM_CARD_TX_0 + i)))
+ wanxl_tx_intr(&card->ports[i]);
+ if (stat & (1 << (DOORBELL_FROM_CARD_CABLE_0 + i)))
+ wanxl_cable_intr(&card->ports[i]);
+ }
+ if (stat & (1 << DOORBELL_FROM_CARD_RX))
+ wanxl_rx_intr(card);
+ }
+
+ return IRQ_RETVAL(handled);
+}
+
+static netdev_tx_t wanxl_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct port *port = dev_to_port(dev);
+ desc_t *desc;
+
+ spin_lock(&port->lock);
+
+ desc = &get_status(port)->tx_descs[port->tx_out];
+ if (desc->stat != PACKET_EMPTY) {
+ /* 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(&port->lock);
+ return NETDEV_TX_BUSY; /* request packet to be queued */
+ }
+
+#ifdef DEBUG_PKT
+ printk(KERN_DEBUG "%s TX(%i):", dev->name, skb->len);
+ debug_frame(skb);
+#endif
+
+ port->tx_skbs[port->tx_out] = skb;
+ desc->address = dma_map_single(&port->card->pdev->dev, skb->data,
+ skb->len, DMA_TO_DEVICE);
+ desc->length = skb->len;
+ desc->stat = PACKET_FULL;
+ writel(1 << (DOORBELL_TO_CARD_TX_0 + port->node),
+ port->card->plx + PLX_DOORBELL_TO_CARD);
+
+ port->tx_out = (port->tx_out + 1) % TX_BUFFERS;
+
+ if (get_status(port)->tx_descs[port->tx_out].stat != PACKET_EMPTY) {
+ netif_stop_queue(dev);
+#ifdef DEBUG_PKT
+ printk(KERN_DEBUG "%s: transmitter buffer full\n", dev->name);
+#endif
+ }
+
+ spin_unlock(&port->lock);
+ return NETDEV_TX_OK;
+}
+
+static int wanxl_attach(struct net_device *dev, unsigned short encoding,
+ unsigned short parity)
+{
+ struct port *port = dev_to_port(dev);
+
+ if (encoding != ENCODING_NRZ &&
+ encoding != ENCODING_NRZI)
+ return -EINVAL;
+
+ if (parity != PARITY_NONE &&
+ parity != PARITY_CRC32_PR1_CCITT &&
+ parity != PARITY_CRC16_PR1_CCITT &&
+ parity != PARITY_CRC32_PR0_CCITT &&
+ parity != PARITY_CRC16_PR0_CCITT)
+ return -EINVAL;
+
+ get_status(port)->encoding = encoding;
+ get_status(port)->parity = parity;
+ return 0;
+}
+
+static int wanxl_ioctl(struct net_device *dev, struct if_settings *ifs)
+{
+ const size_t size = sizeof(sync_serial_settings);
+ sync_serial_settings line;
+ struct port *port = dev_to_port(dev);
+
+ switch (ifs->type) {
+ case IF_GET_IFACE:
+ ifs->type = IF_IFACE_SYNC_SERIAL;
+ if (ifs->size < size) {
+ ifs->size = size; /* data size wanted */
+ return -ENOBUFS;
+ }
+ memset(&line, 0, sizeof(line));
+ line.clock_type = get_status(port)->clocking;
+ line.clock_rate = 0;
+ line.loopback = 0;
+
+ if (copy_to_user(ifs->ifs_ifsu.sync, &line, size))
+ return -EFAULT;
+ return 0;
+
+ case IF_IFACE_SYNC_SERIAL:
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+ if (dev->flags & IFF_UP)
+ return -EBUSY;
+
+ if (copy_from_user(&line, ifs->ifs_ifsu.sync,
+ size))
+ return -EFAULT;
+
+ if (line.clock_type != CLOCK_EXT &&
+ line.clock_type != CLOCK_TXFROMRX)
+ return -EINVAL; /* No such clock setting */
+
+ if (line.loopback != 0)
+ return -EINVAL;
+
+ get_status(port)->clocking = line.clock_type;
+ return 0;
+
+ default:
+ return hdlc_ioctl(dev, ifs);
+ }
+}
+
+static int wanxl_open(struct net_device *dev)
+{
+ struct port *port = dev_to_port(dev);
+ u8 __iomem *dbr = port->card->plx + PLX_DOORBELL_TO_CARD;
+ unsigned long timeout;
+ int i;
+
+ if (get_status(port)->open) {
+ netdev_err(dev, "port already open\n");
+ return -EIO;
+ }
+
+ i = hdlc_open(dev);
+ if (i)
+ return i;
+
+ port->tx_in = port->tx_out = 0;
+ for (i = 0; i < TX_BUFFERS; i++)
+ get_status(port)->tx_descs[i].stat = PACKET_EMPTY;
+ /* signal the card */
+ writel(1 << (DOORBELL_TO_CARD_OPEN_0 + port->node), dbr);
+
+ timeout = jiffies + HZ;
+ do {
+ if (get_status(port)->open) {
+ netif_start_queue(dev);
+ return 0;
+ }
+ } while (time_after(timeout, jiffies));
+
+ netdev_err(dev, "unable to open port\n");
+ /* ask the card to close the port, should it be still alive */
+ writel(1 << (DOORBELL_TO_CARD_CLOSE_0 + port->node), dbr);
+ return -EFAULT;
+}
+
+static int wanxl_close(struct net_device *dev)
+{
+ struct port *port = dev_to_port(dev);
+ unsigned long timeout;
+ int i;
+
+ hdlc_close(dev);
+ /* signal the card */
+ writel(1 << (DOORBELL_TO_CARD_CLOSE_0 + port->node),
+ port->card->plx + PLX_DOORBELL_TO_CARD);
+
+ timeout = jiffies + HZ;
+ do {
+ if (!get_status(port)->open)
+ break;
+ } while (time_after(timeout, jiffies));
+
+ if (get_status(port)->open)
+ netdev_err(dev, "unable to close port\n");
+
+ netif_stop_queue(dev);
+
+ for (i = 0; i < TX_BUFFERS; i++) {
+ desc_t *desc = &get_status(port)->tx_descs[i];
+
+ if (desc->stat != PACKET_EMPTY) {
+ desc->stat = PACKET_EMPTY;
+ dma_unmap_single(&port->card->pdev->dev,
+ desc->address, port->tx_skbs[i]->len,
+ DMA_TO_DEVICE);
+ dev_kfree_skb(port->tx_skbs[i]);
+ }
+ }
+ return 0;
+}
+
+static struct net_device_stats *wanxl_get_stats(struct net_device *dev)
+{
+ struct port *port = dev_to_port(dev);
+
+ dev->stats.rx_over_errors = get_status(port)->rx_overruns;
+ dev->stats.rx_frame_errors = get_status(port)->rx_frame_errors;
+ dev->stats.rx_errors = dev->stats.rx_over_errors +
+ dev->stats.rx_frame_errors;
+ return &dev->stats;
+}
+
+static int wanxl_puts_command(struct card *card, u32 cmd)
+{
+ unsigned long timeout = jiffies + 5 * HZ;
+
+ writel(cmd, card->plx + PLX_MAILBOX_1);
+ do {
+ if (readl(card->plx + PLX_MAILBOX_1) == 0)
+ return 0;
+
+ schedule();
+ } while (time_after(timeout, jiffies));
+
+ return -1;
+}
+
+static void wanxl_reset(struct card *card)
+{
+ u32 old_value = readl(card->plx + PLX_CONTROL) & ~PLX_CTL_RESET;
+
+ writel(0x80, card->plx + PLX_MAILBOX_0);
+ writel(old_value | PLX_CTL_RESET, card->plx + PLX_CONTROL);
+ readl(card->plx + PLX_CONTROL); /* wait for posted write */
+ udelay(1);
+ writel(old_value, card->plx + PLX_CONTROL);
+ readl(card->plx + PLX_CONTROL); /* wait for posted write */
+}
+
+static void wanxl_pci_remove_one(struct pci_dev *pdev)
+{
+ struct card *card = pci_get_drvdata(pdev);
+ int i;
+
+ for (i = 0; i < card->n_ports; i++) {
+ unregister_hdlc_device(card->ports[i].dev);
+ free_netdev(card->ports[i].dev);
+ }
+
+ /* unregister and free all host resources */
+ if (card->irq)
+ free_irq(card->irq, card);
+
+ wanxl_reset(card);
+
+ for (i = 0; i < RX_QUEUE_LENGTH; i++)
+ if (card->rx_skbs[i]) {
+ dma_unmap_single(&card->pdev->dev,
+ card->status->rx_descs[i].address,
+ BUFFER_LENGTH, DMA_FROM_DEVICE);
+ dev_kfree_skb(card->rx_skbs[i]);
+ }
+
+ if (card->plx)
+ iounmap(card->plx);
+
+ if (card->status)
+ dma_free_coherent(&pdev->dev, sizeof(struct card_status),
+ card->status, card->status_address);
+
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ kfree(card);
+}
+
+#include "wanxlfw.inc"
+
+static const struct net_device_ops wanxl_ops = {
+ .ndo_open = wanxl_open,
+ .ndo_stop = wanxl_close,
+ .ndo_start_xmit = hdlc_start_xmit,
+ .ndo_siocwandev = wanxl_ioctl,
+ .ndo_get_stats = wanxl_get_stats,
+};
+
+static int wanxl_pci_init_one(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ struct card *card;
+ u32 ramsize, stat;
+ unsigned long timeout;
+ u32 plx_phy; /* PLX PCI base address */
+ u32 mem_phy; /* memory PCI base addr */
+ u8 __iomem *mem; /* memory virtual base addr */
+ int i, ports;
+
+#ifndef MODULE
+ pr_info_once("%s\n", version);
+#endif
+
+ i = pci_enable_device(pdev);
+ if (i)
+ return i;
+
+ /* QUICC can only access first 256 MB of host RAM directly,
+ * but PLX9060 DMA does 32-bits for actual packet data transfers
+ */
+
+ /* FIXME when PCI/DMA subsystems are fixed.
+ * We set both dma_mask and consistent_dma_mask to 28 bits
+ * and pray pci_alloc_consistent() will use this info. It should
+ * work on most platforms
+ */
+ if (dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(28)) ||
+ dma_set_mask(&pdev->dev, DMA_BIT_MASK(28))) {
+ pr_err("No usable DMA configuration\n");
+ pci_disable_device(pdev);
+ return -EIO;
+ }
+
+ i = pci_request_regions(pdev, "wanXL");
+ if (i) {
+ pci_disable_device(pdev);
+ return i;
+ }
+
+ switch (pdev->device) {
+ case PCI_DEVICE_ID_SBE_WANXL100:
+ ports = 1;
+ break;
+ case PCI_DEVICE_ID_SBE_WANXL200:
+ ports = 2;
+ break;
+ default:
+ ports = 4;
+ }
+
+ card = kzalloc(struct_size(card, ports, ports), GFP_KERNEL);
+ if (!card) {
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ return -ENOBUFS;
+ }
+
+ pci_set_drvdata(pdev, card);
+ card->pdev = pdev;
+
+ card->status = dma_alloc_coherent(&pdev->dev,
+ sizeof(struct card_status),
+ &card->status_address, GFP_KERNEL);
+ if (!card->status) {
+ wanxl_pci_remove_one(pdev);
+ return -ENOBUFS;
+ }
+
+#ifdef DEBUG_PCI
+ printk(KERN_DEBUG "wanXL %s: pci_alloc_consistent() returned memory"
+ " at 0x%LX\n", pci_name(pdev),
+ (unsigned long long)card->status_address);
+#endif
+
+ /* FIXME when PCI/DMA subsystems are fixed.
+ * We set both dma_mask and consistent_dma_mask back to 32 bits
+ * to indicate the card can do 32-bit DMA addressing
+ */
+ if (dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)) ||
+ dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
+ pr_err("No usable DMA configuration\n");
+ wanxl_pci_remove_one(pdev);
+ return -EIO;
+ }
+
+ /* set up PLX mapping */
+ plx_phy = pci_resource_start(pdev, 0);
+
+ card->plx = ioremap(plx_phy, 0x70);
+ if (!card->plx) {
+ pr_err("ioremap() failed\n");
+ wanxl_pci_remove_one(pdev);
+ return -EFAULT;
+ }
+
+#if RESET_WHILE_LOADING
+ wanxl_reset(card);
+#endif
+
+ timeout = jiffies + 20 * HZ;
+ while ((stat = readl(card->plx + PLX_MAILBOX_0)) != 0) {
+ if (time_before(timeout, jiffies)) {
+ pr_warn("%s: timeout waiting for PUTS to complete\n",
+ pci_name(pdev));
+ wanxl_pci_remove_one(pdev);
+ return -ENODEV;
+ }
+
+ switch (stat & 0xC0) {
+ case 0x00: /* hmm - PUTS completed with non-zero code? */
+ case 0x80: /* PUTS still testing the hardware */
+ break;
+
+ default:
+ pr_warn("%s: PUTS test 0x%X failed\n",
+ pci_name(pdev), stat & 0x30);
+ wanxl_pci_remove_one(pdev);
+ return -ENODEV;
+ }
+
+ schedule();
+ }
+
+ /* get on-board memory size (PUTS detects no more than 4 MB) */
+ ramsize = readl(card->plx + PLX_MAILBOX_2) & MBX2_MEMSZ_MASK;
+
+ /* set up on-board RAM mapping */
+ mem_phy = pci_resource_start(pdev, 2);
+
+ /* sanity check the board's reported memory size */
+ if (ramsize < BUFFERS_ADDR +
+ (TX_BUFFERS + RX_BUFFERS) * BUFFER_LENGTH * ports) {
+ pr_warn("%s: no enough on-board RAM (%u bytes detected, %u bytes required)\n",
+ pci_name(pdev), ramsize,
+ BUFFERS_ADDR +
+ (TX_BUFFERS + RX_BUFFERS) * BUFFER_LENGTH * ports);
+ wanxl_pci_remove_one(pdev);
+ return -ENODEV;
+ }
+
+ if (wanxl_puts_command(card, MBX1_CMD_BSWAP)) {
+ pr_warn("%s: unable to Set Byte Swap Mode\n", pci_name(pdev));
+ wanxl_pci_remove_one(pdev);
+ return -ENODEV;
+ }
+
+ for (i = 0; i < RX_QUEUE_LENGTH; i++) {
+ struct sk_buff *skb = dev_alloc_skb(BUFFER_LENGTH);
+
+ card->rx_skbs[i] = skb;
+ if (skb)
+ card->status->rx_descs[i].address =
+ dma_map_single(&card->pdev->dev, skb->data,
+ BUFFER_LENGTH, DMA_FROM_DEVICE);
+ }
+
+ mem = ioremap(mem_phy, PDM_OFFSET + sizeof(firmware));
+ if (!mem) {
+ pr_err("ioremap() failed\n");
+ wanxl_pci_remove_one(pdev);
+ return -EFAULT;
+ }
+
+ for (i = 0; i < sizeof(firmware); i += 4)
+ writel(ntohl(*(__be32 *)(firmware + i)), mem + PDM_OFFSET + i);
+
+ for (i = 0; i < ports; i++)
+ writel(card->status_address +
+ (void *)&card->status->port_status[i] -
+ (void *)card->status, mem + PDM_OFFSET + 4 + i * 4);
+ writel(card->status_address, mem + PDM_OFFSET + 20);
+ writel(PDM_OFFSET, mem);
+ iounmap(mem);
+
+ writel(0, card->plx + PLX_MAILBOX_5);
+
+ if (wanxl_puts_command(card, MBX1_CMD_ABORTJ)) {
+ pr_warn("%s: unable to Abort and Jump\n", pci_name(pdev));
+ wanxl_pci_remove_one(pdev);
+ return -ENODEV;
+ }
+
+ timeout = jiffies + 5 * HZ;
+ do {
+ stat = readl(card->plx + PLX_MAILBOX_5);
+ if (stat)
+ break;
+ schedule();
+ } while (time_after(timeout, jiffies));
+
+ if (!stat) {
+ pr_warn("%s: timeout while initializing card firmware\n",
+ pci_name(pdev));
+ wanxl_pci_remove_one(pdev);
+ return -ENODEV;
+ }
+
+#if DETECT_RAM
+ ramsize = stat;
+#endif
+
+ pr_info("%s: at 0x%X, %u KB of RAM at 0x%X, irq %u\n",
+ pci_name(pdev), plx_phy, ramsize / 1024, mem_phy, pdev->irq);
+
+ /* Allocate IRQ */
+ if (request_irq(pdev->irq, wanxl_intr, IRQF_SHARED, "wanXL", card)) {
+ pr_warn("%s: could not allocate IRQ%i\n",
+ pci_name(pdev), pdev->irq);
+ wanxl_pci_remove_one(pdev);
+ return -EBUSY;
+ }
+ card->irq = pdev->irq;
+
+ for (i = 0; i < ports; i++) {
+ hdlc_device *hdlc;
+ struct port *port = &card->ports[i];
+ struct net_device *dev = alloc_hdlcdev(port);
+
+ if (!dev) {
+ pr_err("%s: unable to allocate memory\n",
+ pci_name(pdev));
+ wanxl_pci_remove_one(pdev);
+ return -ENOMEM;
+ }
+
+ port->dev = dev;
+ hdlc = dev_to_hdlc(dev);
+ spin_lock_init(&port->lock);
+ dev->tx_queue_len = 50;
+ dev->netdev_ops = &wanxl_ops;
+ hdlc->attach = wanxl_attach;
+ hdlc->xmit = wanxl_xmit;
+ port->card = card;
+ port->node = i;
+ get_status(port)->clocking = CLOCK_EXT;
+ if (register_hdlc_device(dev)) {
+ pr_err("%s: unable to register hdlc device\n",
+ pci_name(pdev));
+ free_netdev(dev);
+ wanxl_pci_remove_one(pdev);
+ return -ENOBUFS;
+ }
+ card->n_ports++;
+ }
+
+ pr_info("%s: port", pci_name(pdev));
+ for (i = 0; i < ports; i++)
+ pr_cont("%s #%i: %s",
+ i ? "," : "", i, card->ports[i].dev->name);
+ pr_cont("\n");
+
+ for (i = 0; i < ports; i++)
+ wanxl_cable_intr(&card->ports[i]); /* get carrier status etc.*/
+
+ return 0;
+}
+
+static const struct pci_device_id wanxl_pci_tbl[] = {
+ { PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_SBE_WANXL100, PCI_ANY_ID,
+ PCI_ANY_ID, 0, 0, 0 },
+ { PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_SBE_WANXL200, PCI_ANY_ID,
+ PCI_ANY_ID, 0, 0, 0 },
+ { PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_SBE_WANXL400, PCI_ANY_ID,
+ PCI_ANY_ID, 0, 0, 0 },
+ { 0, }
+};
+
+static struct pci_driver wanxl_pci_driver = {
+ .name = "wanXL",
+ .id_table = wanxl_pci_tbl,
+ .probe = wanxl_pci_init_one,
+ .remove = wanxl_pci_remove_one,
+};
+
+static int __init wanxl_init_module(void)
+{
+#ifdef MODULE
+ pr_info("%s\n", version);
+#endif
+ return pci_register_driver(&wanxl_pci_driver);
+}
+
+static void __exit wanxl_cleanup_module(void)
+{
+ pci_unregister_driver(&wanxl_pci_driver);
+}
+
+MODULE_AUTHOR("Krzysztof Halasa <khc@pm.waw.pl>");
+MODULE_DESCRIPTION("SBE Inc. wanXL serial port driver");
+MODULE_LICENSE("GPL v2");
+MODULE_DEVICE_TABLE(pci, wanxl_pci_tbl);
+
+module_init(wanxl_init_module);
+module_exit(wanxl_cleanup_module);