staging: dgnc: delete the driver

Digi does not support it, no one has hardware for it, and no one is
working on it, so let's drop it for now.  If anyone wants to pick it
back up, then can revert this patch.

Reported-by: Lidza Louina <lidza.louina@gmail.com>
Reported-by: Mark Hounschell <markh@compro.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 0 insertions, 404 deletions

diff --git a/drivers/staging/dgnc/dgnc_driver.c b/drivers/staging/dgnc/dgnc_driver.c
deleted file mode 100644
index 5d8c2d995dcc..000000000000
--- a/drivers/staging/dgnc/dgnc_driver.c
+++ /dev/null
@@ -1,404 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright 2003 Digi International (www.digi.com)
- *	Scott H Kilau <Scott_Kilau at digi dot com>
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/slab.h>
-#include <linux/sched.h>
-#include "dgnc_driver.h"
-#include "dgnc_tty.h"
-#include "dgnc_cls.h"
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Digi International, http://www.digi.com");
-MODULE_DESCRIPTION("Driver for the Digi International Neo and Classic PCI based product line");
-MODULE_SUPPORTED_DEVICE("dgnc");
-
-static unsigned int dgnc_num_boards;
-struct dgnc_board		*dgnc_board[MAXBOARDS];
-static DEFINE_SPINLOCK(dgnc_poll_lock); /* Poll scheduling lock */
-
-static int		dgnc_poll_tick = 20;	/* Poll interval - 20 ms */
-static ulong		dgnc_poll_time; /* Time of next poll */
-static uint		dgnc_poll_stop; /* Used to tell poller to stop */
-static struct timer_list dgnc_poll_timer;
-
-#define DIGI_VID				0x114F
-#define PCI_DEVICE_CLASSIC_4_DID		0x0028
-#define PCI_DEVICE_CLASSIC_8_DID		0x0029
-#define PCI_DEVICE_CLASSIC_4_422_DID		0x00D0
-#define PCI_DEVICE_CLASSIC_8_422_DID		0x00D1
-
-#define PCI_DEVICE_CLASSIC_4_PCI_NAME		"ClassicBoard 4 PCI"
-#define PCI_DEVICE_CLASSIC_8_PCI_NAME		"ClassicBoard 8 PCI"
-#define PCI_DEVICE_CLASSIC_4_422_PCI_NAME	"ClassicBoard 4 422 PCI"
-#define PCI_DEVICE_CLASSIC_8_422_PCI_NAME	"ClassicBoard 8 422 PCI"
-
-static const struct pci_device_id dgnc_pci_tbl[] = {
-	{PCI_DEVICE(DIGI_VID, PCI_DEVICE_CLASSIC_4_DID),     .driver_data = 0},
-	{PCI_DEVICE(DIGI_VID, PCI_DEVICE_CLASSIC_4_422_DID), .driver_data = 1},
-	{PCI_DEVICE(DIGI_VID, PCI_DEVICE_CLASSIC_8_DID),     .driver_data = 2},
-	{PCI_DEVICE(DIGI_VID, PCI_DEVICE_CLASSIC_8_422_DID), .driver_data = 3},
-	{0,}
-};
-MODULE_DEVICE_TABLE(pci, dgnc_pci_tbl);
-
-struct board_id {
-	unsigned char *name;
-	uint maxports;
-	unsigned int is_pci_express;
-};
-
-static const struct board_id dgnc_ids[] = {
-	{	PCI_DEVICE_CLASSIC_4_PCI_NAME,		4,	0	},
-	{	PCI_DEVICE_CLASSIC_4_422_PCI_NAME,	4,	0	},
-	{	PCI_DEVICE_CLASSIC_8_PCI_NAME,		8,	0	},
-	{	PCI_DEVICE_CLASSIC_8_422_PCI_NAME,	8,	0	},
-	{	NULL,					0,	0	}
-};
-
-/* Remap PCI memory. */
-static int dgnc_do_remap(struct dgnc_board *brd)
-{
-	brd->re_map_membase = ioremap(brd->membase, 0x1000);
-	if (!brd->re_map_membase)
-		return -ENOMEM;
-
-	return 0;
-}
-
-/* A board has been found, initialize  it. */
-static struct dgnc_board *dgnc_found_board(struct pci_dev *pdev, int id)
-{
-	struct dgnc_board *brd;
-	unsigned int pci_irq;
-	int rc = 0;
-
-	brd = kzalloc(sizeof(*brd), GFP_KERNEL);
-	if (!brd)
-		return ERR_PTR(-ENOMEM);
-
-	/* store the info for the board we've found */
-	brd->boardnum = dgnc_num_boards;
-	brd->device = dgnc_pci_tbl[id].device;
-	brd->pdev = pdev;
-	brd->name = dgnc_ids[id].name;
-	brd->maxports = dgnc_ids[id].maxports;
-	init_waitqueue_head(&brd->state_wait);
-
-	spin_lock_init(&brd->bd_lock);
-	spin_lock_init(&brd->bd_intr_lock);
-
-	brd->state		= BOARD_FOUND;
-
-	pci_irq = pdev->irq;
-	brd->irq = pci_irq;
-
-	switch (brd->device) {
-	case PCI_DEVICE_CLASSIC_4_DID:
-	case PCI_DEVICE_CLASSIC_8_DID:
-	case PCI_DEVICE_CLASSIC_4_422_DID:
-	case PCI_DEVICE_CLASSIC_8_422_DID:
-		/*
-		 * For PCI ClassicBoards
-		 * PCI Local Address (i.e. "resource" number) space
-		 * 0	PLX Memory Mapped Config
-		 * 1	PLX I/O Mapped Config
-		 * 2	I/O Mapped UARTs and Status
-		 * 3	Memory Mapped VPD
-		 * 4	Memory Mapped UARTs and Status
-		 */
-
-		brd->membase = pci_resource_start(pdev, 4);
-
-		if (!brd->membase) {
-			dev_err(&brd->pdev->dev,
-				"Card has no PCI IO resources, failing.\n");
-			rc = -ENODEV;
-			goto failed;
-		}
-
-		brd->membase_end = pci_resource_end(pdev, 4);
-
-		if (brd->membase & 1)
-			brd->membase &= ~3;
-		else
-			brd->membase &= ~15;
-
-		brd->iobase	= pci_resource_start(pdev, 1);
-		brd->iobase_end = pci_resource_end(pdev, 1);
-		brd->iobase	= ((unsigned int)(brd->iobase)) & 0xFFFE;
-
-		brd->bd_ops = &dgnc_cls_ops;
-
-		brd->bd_uart_offset = 0x8;
-		brd->bd_dividend = 921600;
-
-		rc = dgnc_do_remap(brd);
-		if (rc < 0)
-			goto failed;
-
-		/*
-		 * Enable Local Interrupt 1		  (0x1),
-		 * Local Interrupt 1 Polarity Active high (0x2),
-		 * Enable PCI interrupt			  (0x40)
-		 */
-		outb(0x43, brd->iobase + 0x4c);
-
-		break;
-
-	default:
-		dev_err(&brd->pdev->dev,
-			"Didn't find any compatible Neo/Classic PCI boards.\n");
-		rc = -ENXIO;
-		goto failed;
-	}
-
-	tasklet_init(&brd->helper_tasklet,
-		     brd->bd_ops->tasklet,
-		     (unsigned long)brd);
-
-	wake_up_interruptible(&brd->state_wait);
-
-	return brd;
-
-failed:
-	kfree(brd);
-
-	return ERR_PTR(rc);
-}
-
-static int dgnc_request_irq(struct dgnc_board *brd)
-{
-	if (brd->irq) {
-		int rc = request_irq(brd->irq, brd->bd_ops->intr,
-				 IRQF_SHARED, "DGNC", brd);
-		if (rc) {
-			dev_err(&brd->pdev->dev,
-				"Failed to hook IRQ %d\n", brd->irq);
-			brd->state = BOARD_FAILED;
-			return -ENODEV;
-		}
-	}
-	return 0;
-}
-
-static void dgnc_free_irq(struct dgnc_board *brd)
-{
-	if (brd->irq)
-		free_irq(brd->irq, brd);
-}
-
- /*
-  * As each timer expires, it determines (a) whether the "transmit"
-  * waiter needs to be woken up, and (b) whether the poller needs to
-  * be rescheduled.
-  */
-static void dgnc_poll_handler(struct timer_list *unused)
-{
-	struct dgnc_board *brd;
-	unsigned long flags;
-	int i;
-	unsigned long new_time;
-
-	for (i = 0; i < dgnc_num_boards; i++) {
-		brd = dgnc_board[i];
-
-		spin_lock_irqsave(&brd->bd_lock, flags);
-
-		if (brd->state == BOARD_FAILED) {
-			spin_unlock_irqrestore(&brd->bd_lock, flags);
-			continue;
-		}
-
-		tasklet_schedule(&brd->helper_tasklet);
-
-		spin_unlock_irqrestore(&brd->bd_lock, flags);
-	}
-
-	/* Schedule ourself back at the nominal wakeup interval. */
-
-	spin_lock_irqsave(&dgnc_poll_lock, flags);
-	dgnc_poll_time += dgnc_jiffies_from_ms(dgnc_poll_tick);
-
-	new_time = dgnc_poll_time - jiffies;
-
-	if ((ulong)new_time >= 2 * dgnc_poll_tick)
-		dgnc_poll_time = jiffies + dgnc_jiffies_from_ms(dgnc_poll_tick);
-
-	timer_setup(&dgnc_poll_timer, dgnc_poll_handler, 0);
-	dgnc_poll_timer.expires = dgnc_poll_time;
-	spin_unlock_irqrestore(&dgnc_poll_lock, flags);
-
-	if (!dgnc_poll_stop)
-		add_timer(&dgnc_poll_timer);
-}
-
-/* returns count (>= 0), or negative on error */
-static int dgnc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
-{
-	int rc;
-	struct dgnc_board *brd;
-
-	rc = pci_enable_device(pdev);
-	if (rc)
-		return -EIO;
-
-	brd = dgnc_found_board(pdev, ent->driver_data);
-	if (IS_ERR(brd))
-		return PTR_ERR(brd);
-
-	rc = dgnc_tty_register(brd);
-	if (rc < 0) {
-		pr_err(DRVSTR ": Can't register tty devices (%d)\n", rc);
-		goto failed;
-	}
-
-	rc = dgnc_request_irq(brd);
-	if (rc < 0) {
-		pr_err(DRVSTR ": Can't finalize board init (%d)\n", rc);
-		goto unregister_tty;
-	}
-
-	rc = dgnc_tty_init(brd);
-	if (rc < 0) {
-		pr_err(DRVSTR ": Can't init tty devices (%d)\n", rc);
-		goto free_irq;
-	}
-
-	brd->state = BOARD_READY;
-
-	dgnc_board[dgnc_num_boards++] = brd;
-
-	return 0;
-
-free_irq:
-	dgnc_free_irq(brd);
-unregister_tty:
-	dgnc_tty_unregister(brd);
-failed:
-	kfree(brd);
-
-	return rc;
-}
-
-static struct pci_driver dgnc_driver = {
-	.name		= "dgnc",
-	.probe		= dgnc_init_one,
-	.id_table       = dgnc_pci_tbl,
-};
-
-static int dgnc_start(void)
-{
-	unsigned long flags;
-
-	/* Start the poller */
-	spin_lock_irqsave(&dgnc_poll_lock, flags);
-	timer_setup(&dgnc_poll_timer, dgnc_poll_handler, 0);
-	dgnc_poll_time = jiffies + dgnc_jiffies_from_ms(dgnc_poll_tick);
-	dgnc_poll_timer.expires = dgnc_poll_time;
-	spin_unlock_irqrestore(&dgnc_poll_lock, flags);
-
-	add_timer(&dgnc_poll_timer);
-
-	return 0;
-}
-
-/* Free all the memory associated with a board */
-static void dgnc_cleanup_board(struct dgnc_board *brd)
-{
-	int i = 0;
-
-	if (!brd)
-		return;
-
-	switch (brd->device) {
-	case PCI_DEVICE_CLASSIC_4_DID:
-	case PCI_DEVICE_CLASSIC_8_DID:
-	case PCI_DEVICE_CLASSIC_4_422_DID:
-	case PCI_DEVICE_CLASSIC_8_422_DID:
-
-		/* Tell card not to interrupt anymore. */
-		outb(0, brd->iobase + 0x4c);
-		break;
-
-	default:
-		break;
-	}
-
-	if (brd->irq)
-		free_irq(brd->irq, brd);
-
-	tasklet_kill(&brd->helper_tasklet);
-
-	if (brd->re_map_membase) {
-		iounmap(brd->re_map_membase);
-		brd->re_map_membase = NULL;
-	}
-
-	for (i = 0; i < MAXPORTS ; i++) {
-		if (brd->channels[i]) {
-			kfree(brd->channels[i]->ch_rqueue);
-			kfree(brd->channels[i]->ch_equeue);
-			kfree(brd->channels[i]->ch_wqueue);
-			kfree(brd->channels[i]);
-			brd->channels[i] = NULL;
-		}
-	}
-
-	dgnc_board[brd->boardnum] = NULL;
-
-	kfree(brd);
-}
-
-/* Driver load/unload functions */
-
-static void cleanup(void)
-{
-	int i;
-	unsigned long flags;
-
-	spin_lock_irqsave(&dgnc_poll_lock, flags);
-	dgnc_poll_stop = 1;
-	spin_unlock_irqrestore(&dgnc_poll_lock, flags);
-
-	/* Turn off poller right away. */
-	del_timer_sync(&dgnc_poll_timer);
-
-	for (i = 0; i < dgnc_num_boards; ++i) {
-		dgnc_cleanup_tty(dgnc_board[i]);
-		dgnc_cleanup_board(dgnc_board[i]);
-	}
-}
-
-static void __exit dgnc_cleanup_module(void)
-{
-	cleanup();
-	pci_unregister_driver(&dgnc_driver);
-}
-
-static int __init dgnc_init_module(void)
-{
-	int rc;
-
-	/* Initialize global stuff */
-	rc = dgnc_start();
-	if (rc < 0)
-		return rc;
-
-	/* Find and configure all the cards */
-	rc = pci_register_driver(&dgnc_driver);
-	if (rc) {
-		pr_warn("WARNING: dgnc driver load failed.  No Digi Neo or Classic boards found.\n");
-		cleanup();
-		return rc;
-	}
-	return 0;
-}
-
-module_init(dgnc_init_module);
-module_exit(dgnc_cleanup_module);