aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/wan/sealevel.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wan/sealevel.c')
-rw-r--r--drivers/net/wan/sealevel.c352
1 files changed, 0 insertions, 352 deletions
diff --git a/drivers/net/wan/sealevel.c b/drivers/net/wan/sealevel.c
deleted file mode 100644
index eddd20aab691..000000000000
--- a/drivers/net/wan/sealevel.c
+++ /dev/null
@@ -1,352 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/* Sealevel Systems 4021 driver.
- *
- * (c) Copyright 1999, 2001 Alan Cox
- * (c) Copyright 2001 Red Hat Inc.
- * Generic HDLC port Copyright (C) 2008 Krzysztof Halasa <khc@pm.waw.pl>
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/net.h>
-#include <linux/skbuff.h>
-#include <linux/netdevice.h>
-#include <linux/if_arp.h>
-#include <linux/delay.h>
-#include <linux/hdlc.h>
-#include <linux/ioport.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <net/arp.h>
-
-#include <asm/irq.h>
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <asm/byteorder.h>
-#include "z85230.h"
-
-struct slvl_device {
- struct z8530_channel *chan;
- int channel;
-};
-
-struct slvl_board {
- struct slvl_device dev[2];
- struct z8530_dev board;
- int iobase;
-};
-
- /* Network driver support routines */
-
-static inline struct slvl_device *dev_to_chan(struct net_device *dev)
-{
- return (struct slvl_device *)dev_to_hdlc(dev)->priv;
-}
-
-/* Frame receive. Simple for our card as we do HDLC and there
- * is no funny garbage involved
- */
-
-static void sealevel_input(struct z8530_channel *c, struct sk_buff *skb)
-{
- /* Drop the CRC - it's not a good idea to try and negotiate it ;) */
- skb_trim(skb, skb->len - 2);
- skb->protocol = hdlc_type_trans(skb, c->netdevice);
- skb_reset_mac_header(skb);
- skb->dev = c->netdevice;
- netif_rx(skb);
-}
-
- /* We've been placed in the UP state */
-
-static int sealevel_open(struct net_device *d)
-{
- struct slvl_device *slvl = dev_to_chan(d);
- int err = -1;
- int unit = slvl->channel;
-
- /* Link layer up. */
-
- switch (unit) {
- case 0:
- err = z8530_sync_dma_open(d, slvl->chan);
- break;
- case 1:
- err = z8530_sync_open(d, slvl->chan);
- break;
- }
-
- if (err)
- return err;
-
- err = hdlc_open(d);
- if (err) {
- switch (unit) {
- case 0:
- z8530_sync_dma_close(d, slvl->chan);
- break;
- case 1:
- z8530_sync_close(d, slvl->chan);
- break;
- }
- return err;
- }
-
- slvl->chan->rx_function = sealevel_input;
-
- netif_start_queue(d);
- return 0;
-}
-
-static int sealevel_close(struct net_device *d)
-{
- struct slvl_device *slvl = dev_to_chan(d);
- int unit = slvl->channel;
-
- /* Discard new frames */
-
- slvl->chan->rx_function = z8530_null_rx;
-
- hdlc_close(d);
- netif_stop_queue(d);
-
- switch (unit) {
- case 0:
- z8530_sync_dma_close(d, slvl->chan);
- break;
- case 1:
- z8530_sync_close(d, slvl->chan);
- break;
- }
- return 0;
-}
-
-/* Passed network frames, fire them downwind. */
-
-static netdev_tx_t sealevel_queue_xmit(struct sk_buff *skb,
- struct net_device *d)
-{
- return z8530_queue_xmit(dev_to_chan(d)->chan, skb);
-}
-
-static int sealevel_attach(struct net_device *dev, unsigned short encoding,
- unsigned short parity)
-{
- if (encoding == ENCODING_NRZ && parity == PARITY_CRC16_PR1_CCITT)
- return 0;
- return -EINVAL;
-}
-
-static const struct net_device_ops sealevel_ops = {
- .ndo_open = sealevel_open,
- .ndo_stop = sealevel_close,
- .ndo_start_xmit = hdlc_start_xmit,
- .ndo_siocwandev = hdlc_ioctl,
-};
-
-static int slvl_setup(struct slvl_device *sv, int iobase, int irq)
-{
- struct net_device *dev = alloc_hdlcdev(sv);
-
- if (!dev)
- return -1;
-
- dev_to_hdlc(dev)->attach = sealevel_attach;
- dev_to_hdlc(dev)->xmit = sealevel_queue_xmit;
- dev->netdev_ops = &sealevel_ops;
- dev->base_addr = iobase;
- dev->irq = irq;
-
- if (register_hdlc_device(dev)) {
- pr_err("unable to register HDLC device\n");
- free_netdev(dev);
- return -1;
- }
-
- sv->chan->netdevice = dev;
- return 0;
-}
-
-/* Allocate and setup Sealevel board. */
-
-static __init struct slvl_board *slvl_init(int iobase, int irq,
- int txdma, int rxdma, int slow)
-{
- struct z8530_dev *dev;
- struct slvl_board *b;
-
- /* Get the needed I/O space */
-
- if (!request_region(iobase, 8, "Sealevel 4021")) {
- pr_warn("I/O 0x%X already in use\n", iobase);
- return NULL;
- }
-
- b = kzalloc(sizeof(struct slvl_board), GFP_KERNEL);
- if (!b)
- goto err_kzalloc;
-
- b->dev[0].chan = &b->board.chanA;
- b->dev[0].channel = 0;
-
- b->dev[1].chan = &b->board.chanB;
- b->dev[1].channel = 1;
-
- dev = &b->board;
-
- /* Stuff in the I/O addressing */
-
- dev->active = 0;
-
- b->iobase = iobase;
-
- /* Select 8530 delays for the old board */
-
- if (slow)
- iobase |= Z8530_PORT_SLEEP;
-
- dev->chanA.ctrlio = iobase + 1;
- dev->chanA.dataio = iobase;
- dev->chanB.ctrlio = iobase + 3;
- dev->chanB.dataio = iobase + 2;
-
- dev->chanA.irqs = &z8530_nop;
- dev->chanB.irqs = &z8530_nop;
-
- /* Assert DTR enable DMA */
-
- outb(3 | (1 << 7), b->iobase + 4);
-
- /* We want a fast IRQ for this device. Actually we'd like an even faster
- * IRQ ;) - This is one driver RtLinux is made for
- */
-
- if (request_irq(irq, z8530_interrupt, 0,
- "SeaLevel", dev) < 0) {
- pr_warn("IRQ %d already in use\n", irq);
- goto err_request_irq;
- }
-
- dev->irq = irq;
- dev->chanA.private = &b->dev[0];
- dev->chanB.private = &b->dev[1];
- dev->chanA.dev = dev;
- dev->chanB.dev = dev;
-
- dev->chanA.txdma = 3;
- dev->chanA.rxdma = 1;
- if (request_dma(dev->chanA.txdma, "SeaLevel (TX)"))
- goto err_dma_tx;
-
- if (request_dma(dev->chanA.rxdma, "SeaLevel (RX)"))
- goto err_dma_rx;
-
- disable_irq(irq);
-
- /* Begin normal initialise */
-
- if (z8530_init(dev) != 0) {
- pr_err("Z8530 series device not found\n");
- enable_irq(irq);
- goto free_hw;
- }
- if (dev->type == Z85C30) {
- z8530_channel_load(&dev->chanA, z8530_hdlc_kilostream);
- z8530_channel_load(&dev->chanB, z8530_hdlc_kilostream);
- } else {
- z8530_channel_load(&dev->chanA, z8530_hdlc_kilostream_85230);
- z8530_channel_load(&dev->chanB, z8530_hdlc_kilostream_85230);
- }
-
- /* Now we can take the IRQ */
-
- enable_irq(irq);
-
- if (slvl_setup(&b->dev[0], iobase, irq))
- goto free_hw;
- if (slvl_setup(&b->dev[1], iobase, irq))
- goto free_netdev0;
-
- z8530_describe(dev, "I/O", iobase);
- dev->active = 1;
- return b;
-
-free_netdev0:
- unregister_hdlc_device(b->dev[0].chan->netdevice);
- free_netdev(b->dev[0].chan->netdevice);
-free_hw:
- free_dma(dev->chanA.rxdma);
-err_dma_rx:
- free_dma(dev->chanA.txdma);
-err_dma_tx:
- free_irq(irq, dev);
-err_request_irq:
- kfree(b);
-err_kzalloc:
- release_region(iobase, 8);
- return NULL;
-}
-
-static void __exit slvl_shutdown(struct slvl_board *b)
-{
- int u;
-
- z8530_shutdown(&b->board);
-
- for (u = 0; u < 2; u++) {
- struct net_device *d = b->dev[u].chan->netdevice;
-
- unregister_hdlc_device(d);
- free_netdev(d);
- }
-
- free_irq(b->board.irq, &b->board);
- free_dma(b->board.chanA.rxdma);
- free_dma(b->board.chanA.txdma);
- /* DMA off on the card, drop DTR */
- outb(0, b->iobase);
- release_region(b->iobase, 8);
- kfree(b);
-}
-
-static int io = 0x238;
-static int txdma = 1;
-static int rxdma = 3;
-static int irq = 5;
-static bool slow;
-
-module_param_hw(io, int, ioport, 0);
-MODULE_PARM_DESC(io, "The I/O base of the Sealevel card");
-module_param_hw(txdma, int, dma, 0);
-MODULE_PARM_DESC(txdma, "Transmit DMA channel");
-module_param_hw(rxdma, int, dma, 0);
-MODULE_PARM_DESC(rxdma, "Receive DMA channel");
-module_param_hw(irq, int, irq, 0);
-MODULE_PARM_DESC(irq, "The interrupt line setting for the SeaLevel card");
-module_param(slow, bool, 0);
-MODULE_PARM_DESC(slow, "Set this for an older Sealevel card such as the 4012");
-
-MODULE_AUTHOR("Alan Cox");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Modular driver for the SeaLevel 4021");
-
-static struct slvl_board *slvl_unit;
-
-static int __init slvl_init_module(void)
-{
- slvl_unit = slvl_init(io, irq, txdma, rxdma, slow);
-
- return slvl_unit ? 0 : -ENODEV;
-}
-
-static void __exit slvl_cleanup_module(void)
-{
- if (slvl_unit)
- slvl_shutdown(slvl_unit);
-}
-
-module_init(slvl_init_module);
-module_exit(slvl_cleanup_module);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.