From f0692768a51f613c06c30eb249464ff9567fbc93 Mon Sep 17 00:00:00 2001 From: florian Date: Fri, 30 Nov 2012 10:53:47 +0000 Subject: [ubicom32] remove target This target is unused, does not support any off the shelf hardware and has been a maintenance burden for quite some time now. Signed-off-by: Florian Fainelli git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34430 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../ubicom32/files/drivers/uio/uio_ubicom32ring.c | 288 --------------------- 1 file changed, 288 deletions(-) delete mode 100644 target/linux/ubicom32/files/drivers/uio/uio_ubicom32ring.c (limited to 'target/linux/ubicom32/files/drivers/uio') 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 . - */ - -#include -#include -#include -#include -#include -#include - -#include -#include - -#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); -- cgit v1.2.3