1 files changed, 0 insertions, 288 deletions
diff --git a/target/linux/ubicom32/files/drivers/uio/uio_ubicom32ring.c b/target/linux/ubicom32/files/drivers/uio/uio_ubicom32ring.c
deleted file mode 100644
index 654ac4ced..000000000
--- a/target/linux/ubicom32/files/drivers/uio/uio_ubicom32ring.c
+++ /dev/null
@@ -1,288 +0,0 @@
-/*
- * drivers/uio/uio_ubicom32ring.c
- *
- * Userspace I/O platform driver for Ubicom32 ring buffers
- *
- * (C) Copyright 2009, Ubicom, Inc.
- *
- * This file is part of the Ubicom32 Linux Kernel Port.
- *
- * Based on uio_ubicom32ring.c by Magnus Damm
- *
- * The Ubicom32 Linux Kernel Port is free software: you can redistribute
- * it and/or modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation, either version 2 of the
- * License, or (at your option) any later version.
- *
- * The Ubicom32 Linux Kernel Port is distributed in the hope that it
- * will be useful, but WITHOUT ANY WARRANTY; without even the implied
- * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
- * the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with the Ubicom32 Linux Kernel Port.  If not,
- * see <http://www.gnu.org/licenses/>.
- */
-
-#include <linux/platform_device.h>
-#include <linux/uio_driver.h>
-#include <linux/spinlock.h>
-#include <linux/bitops.h>
-#include <linux/interrupt.h>
-#include <linux/stringify.h>
-
-#include <asm/ip5000.h>
-#include <asm/ubicom32ring.h>
-
-#define DRIVER_NAME "uio_ubicom32ring"
-
-struct uio_ubicom32ring_data {
-	struct uio_info			*uioinfo;
-
-	struct uio_ubicom32ring_regs	*regs;
-
-	/*
-	 * IRQ used to kick the ring buffer
-	 */
-	int				irq_tx;
-	int				irq_rx;
-
-	spinlock_t			lock;
-
-	unsigned long			flags;
-
-	char				name[0];
-};
-
-static irqreturn_t uio_ubicom32ring_handler(int irq, struct uio_info *dev_info)
-{
-	struct uio_ubicom32ring_data *priv = dev_info->priv;
-
-	/* Just disable the interrupt in the interrupt controller, and
-	 * remember the state so we can allow user space to enable it later.
-	 */
-
-	if (!test_and_set_bit(0, &priv->flags))
-		disable_irq_nosync(irq);
-
-	return IRQ_HANDLED;
-}
-
-static int uio_ubicom32ring_irqcontrol(struct uio_info *dev_info, s32 irq_on)
-{
-	struct uio_ubicom32ring_data *priv = dev_info->priv;
-	unsigned long flags;
-
-	/* Allow user space to enable and disable the interrupt
-	 * in the interrupt controller, but keep track of the
-	 * state to prevent per-irq depth damage.
-	 *
-	 * Serialize this operation to support multiple tasks.
-	 */
-
-	spin_lock_irqsave(&priv->lock, flags);
-
-	if (irq_on & 2) {
-		/*
-		 * Kick the ring buffer (if we can)
-		 */
-		if (priv->irq_tx != 0xFF) {
-			ubicom32_set_interrupt(priv->irq_tx);
-		}
-	}
-
-	if (priv->irq_rx != 0xFF) {
-		if (irq_on & 1) {
-			if (test_and_clear_bit(0, &priv->flags))
-				enable_irq(dev_info->irq);
-		} else {
-			if (!test_and_set_bit(0, &priv->flags))
-				disable_irq(dev_info->irq);
-		}
-	}
-
-	spin_unlock_irqrestore(&priv->lock, flags);
-
-	return 0;
-}
-
-static int uio_ubicom32ring_probe(struct platform_device *pdev)
-{
-	struct uio_info *uioinfo;
-	struct uio_mem *uiomem;
-	struct uio_ubicom32ring_data *priv;
-	struct uio_ubicom32ring_regs *regs;
-	struct resource *mem_resource;
-	struct resource *irqtx_resource;
-	struct resource *irqrx_resource;
-	int ret = -EINVAL;
-	int i;
-
-	uioinfo = kzalloc(sizeof(struct uio_info), GFP_KERNEL);
-	if (!uioinfo) {
-		dev_err(&pdev->dev, "unable to kmalloc\n");
-		return -ENOMEM;
-	}
-
-	/*
-	 * Allocate private data with some string space after
-	 */
-	i = sizeof(DRIVER_NAME) + 1;
-	i += pdev->dev.platform_data ? strlen(pdev->dev.platform_data) : 0;
-	priv = kzalloc(sizeof(struct uio_ubicom32ring_data) + i, GFP_KERNEL);
-	if (!priv) {
-		dev_err(&pdev->dev, "unable to kmalloc\n");
-		kfree(uioinfo);
-		return -ENOMEM;
-	}
-
-	strcpy(priv->name, DRIVER_NAME ":");
-	if (pdev->dev.platform_data) {
-		strcat(priv->name, pdev->dev.platform_data);
-	}
-	uioinfo->priv = priv;
-	uioinfo->name = priv->name;
-	uioinfo->version = "0.1";
-
-	priv->uioinfo = uioinfo;
-	spin_lock_init(&priv->lock);
-	priv->flags = 0; /* interrupt is enabled to begin with */
-
-	/*
-	 * Get our resources, the IRQ_TX and IRQ_RX are optional.
-	 */
-	priv->irq_tx = 0xFF;
-	irqtx_resource = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (irqtx_resource) {
-		priv->irq_tx = irqtx_resource->start;
-	}
-
-	uioinfo->irq = -1;
-	priv->irq_rx = 0xFF;
-	irqrx_resource = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
-	if (irqrx_resource) {
-		priv->irq_rx = irqrx_resource->start;
-		uioinfo->irq = priv->irq_rx;
-		uioinfo->handler = uio_ubicom32ring_handler;
-	}
-
-	mem_resource = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!mem_resource || !mem_resource->start) {
-		dev_err(&pdev->dev, "No valid memory resource found\n");
-		ret = -ENODEV;
-		goto fail;
-	}
-	regs = (struct uio_ubicom32ring_regs *)mem_resource->start;
-	priv->regs = regs;
-
-	if (regs->version != UIO_UBICOM32RING_REG_VERSION) {
-		dev_err(&pdev->dev, "version %d not supported\n", regs->version);
-		ret = -ENODEV;
-		goto fail;
-	}
-
-	/*
-	 * First range is the shared register space, if we have any
-	 */
-	uiomem = &uioinfo->mem[0];
-	if (regs->regs_size) {
-		uiomem->memtype = UIO_MEM_PHYS;
-		uiomem->addr = (u32_t)regs->regs;
-		uiomem->size = regs->regs_size;
-		++uiomem;
-		dev_info(&pdev->dev, "regs:%p (%u) / rings: %d found\n", regs->regs, regs->regs_size, regs->num_rings);
-	} else {
-		dev_info(&pdev->dev, "rings: %d found\n", regs->num_rings);
-	}
-
-	/*
-	 * The rest of the range correspond to the rings
-	 */
-	for (i = 0; i < regs->num_rings; i++) {
-		dev_info(&pdev->dev, "\t%d: entries:%d ring:%p\n",
-			 i, regs->rings[i]->entries, &(regs->rings[i]->ring));
-		if (uiomem >= &uioinfo->mem[MAX_UIO_MAPS]) {
-			dev_warn(&pdev->dev, "device has more than "
-					__stringify(MAX_UIO_MAPS)
-					" I/O memory resources.\n");
-			break;
-		}
-
-		uiomem->memtype = UIO_MEM_PHYS;
-		uiomem->addr = (u32_t)&(regs->rings[i]->head);
-		uiomem->size = (regs->rings[i]->entries * sizeof(u32_t)) +
-				sizeof(struct uio_ubicom32ring_desc);
-		++uiomem;
-	}
-
-	while (uiomem < &uioinfo->mem[MAX_UIO_MAPS]) {
-		uiomem->size = 0;
-		++uiomem;
-	}
-
-	/* This driver requires no hardware specific kernel code to handle
-	 * interrupts. Instead, the interrupt handler simply disables the
-	 * interrupt in the interrupt controller. User space is responsible
-	 * for performing hardware specific acknowledge and re-enabling of
-	 * the interrupt in the interrupt controller.
-	 *
-	 * Interrupt sharing is not supported.
-	 */
-	uioinfo->irq_flags = IRQF_DISABLED;
-	uioinfo->irqcontrol = uio_ubicom32ring_irqcontrol;
-
-	ret = uio_register_device(&pdev->dev, priv->uioinfo);
-	if (ret) {
-		dev_err(&pdev->dev, "unable to register uio device\n");
-		goto fail;
-	}
-
-	platform_set_drvdata(pdev, priv);
-
-	dev_info(&pdev->dev, "'%s' using irq: rx %d tx %d, regs %p\n",
-		 priv->name, priv->irq_rx, priv->irq_tx, priv->regs);
-
-	return 0;
-
-fail:
-	kfree(uioinfo);
-	kfree(priv);
-	return ret;
-}
-
-static int uio_ubicom32ring_remove(struct platform_device *pdev)
-{
-	struct uio_ubicom32ring_data *priv = platform_get_drvdata(pdev);
-
-	uio_unregister_device(priv->uioinfo);
-	kfree(priv->uioinfo);
-	kfree(priv);
-	return 0;
-}
-
-static struct platform_driver uio_ubicom32ring = {
-	.probe = uio_ubicom32ring_probe,
-	.remove = uio_ubicom32ring_remove,
-	.driver = {
-		.name = DRIVER_NAME,
-		.owner = THIS_MODULE,
-	},
-};
-
-static int __init uio_ubicom32ring_init(void)
-{
-	return platform_driver_register(&uio_ubicom32ring);
-}
-
-static void __exit uio_ubicom32ring_exit(void)
-{
-	platform_driver_unregister(&uio_ubicom32ring);
-}
-
-module_init(uio_ubicom32ring_init);
-module_exit(uio_ubicom32ring_exit);
-
-MODULE_AUTHOR("Patrick Tjin");
-MODULE_DESCRIPTION("Userspace I/O driver for Ubicom32 ring buffers");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:" DRIVER_NAME);