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path: root/drivers/net/wan/hostess_sv11.c
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Diffstat (limited to 'drivers/net/wan/hostess_sv11.c')
-rw-r--r--drivers/net/wan/hostess_sv11.c336
1 files changed, 0 insertions, 336 deletions
diff --git a/drivers/net/wan/hostess_sv11.c b/drivers/net/wan/hostess_sv11.c
deleted file mode 100644
index e985e54ba75d..000000000000
--- a/drivers/net/wan/hostess_sv11.c
+++ /dev/null
@@ -1,336 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/* Comtrol SV11 card driver
- *
- * This is a slightly odd Z85230 synchronous driver. All you need to
- * know basically is
- *
- * Its a genuine Z85230
- *
- * It supports DMA using two DMA channels in SYNC mode. The driver doesn't
- * use these facilities
- *
- * The control port is at io+1, the data at io+3 and turning off the DMA
- * is done by writing 0 to io+4
- *
- * The hardware does the bus handling to avoid the need for delays between
- * touching control registers.
- *
- * Port B isn't wired (why - beats me)
- *
- * 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/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"
-
-static int dma;
-
-/* Network driver support routines
- */
-
-static inline struct z8530_dev *dev_to_sv(struct net_device *dev)
-{
- return (struct z8530_dev *)dev_to_hdlc(dev)->priv;
-}
-
-/* Frame receive. Simple for our card as we do HDLC and there
- * is no funny garbage involved
- */
-
-static void hostess_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;
- /* Send it to the PPP layer. We don't have time to process
- * it right now.
- */
- netif_rx(skb);
-}
-
-/* We've been placed in the UP state
- */
-
-static int hostess_open(struct net_device *d)
-{
- struct z8530_dev *sv11 = dev_to_sv(d);
- int err = -1;
-
- /* Link layer up
- */
- switch (dma) {
- case 0:
- err = z8530_sync_open(d, &sv11->chanA);
- break;
- case 1:
- err = z8530_sync_dma_open(d, &sv11->chanA);
- break;
- case 2:
- err = z8530_sync_txdma_open(d, &sv11->chanA);
- break;
- }
-
- if (err)
- return err;
-
- err = hdlc_open(d);
- if (err) {
- switch (dma) {
- case 0:
- z8530_sync_close(d, &sv11->chanA);
- break;
- case 1:
- z8530_sync_dma_close(d, &sv11->chanA);
- break;
- case 2:
- z8530_sync_txdma_close(d, &sv11->chanA);
- break;
- }
- return err;
- }
- sv11->chanA.rx_function = hostess_input;
-
- /*
- * Go go go
- */
-
- netif_start_queue(d);
- return 0;
-}
-
-static int hostess_close(struct net_device *d)
-{
- struct z8530_dev *sv11 = dev_to_sv(d);
- /* Discard new frames
- */
- sv11->chanA.rx_function = z8530_null_rx;
-
- hdlc_close(d);
- netif_stop_queue(d);
-
- switch (dma) {
- case 0:
- z8530_sync_close(d, &sv11->chanA);
- break;
- case 1:
- z8530_sync_dma_close(d, &sv11->chanA);
- break;
- case 2:
- z8530_sync_txdma_close(d, &sv11->chanA);
- break;
- }
- return 0;
-}
-
-/* Passed network frames, fire them downwind.
- */
-
-static netdev_tx_t hostess_queue_xmit(struct sk_buff *skb,
- struct net_device *d)
-{
- return z8530_queue_xmit(&dev_to_sv(d)->chanA, skb);
-}
-
-static int hostess_attach(struct net_device *dev, unsigned short encoding,
- unsigned short parity)
-{
- if (encoding == ENCODING_NRZ && parity == PARITY_CRC16_PR1_CCITT)
- return 0;
- return -EINVAL;
-}
-
-/* Description block for a Comtrol Hostess SV11 card
- */
-
-static const struct net_device_ops hostess_ops = {
- .ndo_open = hostess_open,
- .ndo_stop = hostess_close,
- .ndo_start_xmit = hdlc_start_xmit,
- .ndo_siocwandev = hdlc_ioctl,
-};
-
-static struct z8530_dev *sv11_init(int iobase, int irq)
-{
- struct z8530_dev *sv;
- struct net_device *netdev;
- /* Get the needed I/O space
- */
-
- if (!request_region(iobase, 8, "Comtrol SV11")) {
- pr_warn("I/O 0x%X already in use\n", iobase);
- return NULL;
- }
-
- sv = kzalloc(sizeof(struct z8530_dev), GFP_KERNEL);
- if (!sv)
- goto err_kzalloc;
-
- /* Stuff in the I/O addressing
- */
-
- sv->active = 0;
-
- sv->chanA.ctrlio = iobase + 1;
- sv->chanA.dataio = iobase + 3;
- sv->chanB.ctrlio = -1;
- sv->chanB.dataio = -1;
- sv->chanA.irqs = &z8530_nop;
- sv->chanB.irqs = &z8530_nop;
-
- outb(0, iobase + 4); /* DMA off */
-
- /* 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,
- "Hostess SV11", sv) < 0) {
- pr_warn("IRQ %d already in use\n", irq);
- goto err_irq;
- }
-
- sv->irq = irq;
- sv->chanA.private = sv;
- sv->chanA.dev = sv;
- sv->chanB.dev = sv;
-
- if (dma) {
- /* You can have DMA off or 1 and 3 thats the lot
- * on the Comtrol.
- */
- sv->chanA.txdma = 3;
- sv->chanA.rxdma = 1;
- outb(0x03 | 0x08, iobase + 4); /* DMA on */
- if (request_dma(sv->chanA.txdma, "Hostess SV/11 (TX)"))
- goto err_txdma;
-
- if (dma == 1)
- if (request_dma(sv->chanA.rxdma, "Hostess SV/11 (RX)"))
- goto err_rxdma;
- }
-
- /* Kill our private IRQ line the hostess can end up chattering
- * until the configuration is set
- */
- disable_irq(irq);
-
- /* Begin normal initialise
- */
-
- if (z8530_init(sv)) {
- pr_err("Z8530 series device not found\n");
- enable_irq(irq);
- goto free_dma;
- }
- z8530_channel_load(&sv->chanB, z8530_dead_port);
- if (sv->type == Z85C30)
- z8530_channel_load(&sv->chanA, z8530_hdlc_kilostream);
- else
- z8530_channel_load(&sv->chanA, z8530_hdlc_kilostream_85230);
-
- enable_irq(irq);
-
- /* Now we can take the IRQ
- */
-
- sv->chanA.netdevice = netdev = alloc_hdlcdev(sv);
- if (!netdev)
- goto free_dma;
-
- dev_to_hdlc(netdev)->attach = hostess_attach;
- dev_to_hdlc(netdev)->xmit = hostess_queue_xmit;
- netdev->netdev_ops = &hostess_ops;
- netdev->base_addr = iobase;
- netdev->irq = irq;
-
- if (register_hdlc_device(netdev)) {
- pr_err("unable to register HDLC device\n");
- free_netdev(netdev);
- goto free_dma;
- }
-
- z8530_describe(sv, "I/O", iobase);
- sv->active = 1;
- return sv;
-
-free_dma:
- if (dma == 1)
- free_dma(sv->chanA.rxdma);
-err_rxdma:
- if (dma)
- free_dma(sv->chanA.txdma);
-err_txdma:
- free_irq(irq, sv);
-err_irq:
- kfree(sv);
-err_kzalloc:
- release_region(iobase, 8);
- return NULL;
-}
-
-static void sv11_shutdown(struct z8530_dev *dev)
-{
- unregister_hdlc_device(dev->chanA.netdevice);
- z8530_shutdown(dev);
- free_irq(dev->irq, dev);
- if (dma) {
- if (dma == 1)
- free_dma(dev->chanA.rxdma);
- free_dma(dev->chanA.txdma);
- }
- release_region(dev->chanA.ctrlio - 1, 8);
- free_netdev(dev->chanA.netdevice);
- kfree(dev);
-}
-
-static int io = 0x200;
-static int irq = 9;
-
-module_param_hw(io, int, ioport, 0);
-MODULE_PARM_DESC(io, "The I/O base of the Comtrol Hostess SV11 card");
-module_param_hw(dma, int, dma, 0);
-MODULE_PARM_DESC(dma, "Set this to 1 to use DMA1/DMA3 for TX/RX");
-module_param_hw(irq, int, irq, 0);
-MODULE_PARM_DESC(irq, "The interrupt line setting for the Comtrol Hostess SV11 card");
-
-MODULE_AUTHOR("Alan Cox");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Modular driver for the Comtrol Hostess SV11");
-
-static struct z8530_dev *sv11_unit;
-
-static int sv11_module_init(void)
-{
- sv11_unit = sv11_init(io, irq);
- if (!sv11_unit)
- return -ENODEV;
- return 0;
-}
-module_init(sv11_module_init);
-
-static void sv11_module_cleanup(void)
-{
- if (sv11_unit)
- sv11_shutdown(sv11_unit);
-}
-module_exit(sv11_module_cleanup);
generated by cgit v1.2.3 (git 2.39.0) at 2025-02-09 16:02:16 +0300