+++ /dev/null
-/*
- * $Id$
- *
- * Copyright (C) 2006, 2007 OpenWrt.org
- *
- * This program 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.
- *
- * This program 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 this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/ioport.h>
-#include <linux/errno.h>
-#include <linux/platform_device.h>
-#include <linux/irq.h>
-#include <linux/interrupt.h>
-#include <linux/device.h>
-#include <asm/addrspace.h>
-#include <asm/io.h>
-#include <asm/ar7/ar7.h>
-#include <asm/ar7/vlynq.h>
-
-#define PER_DEVICE_IRQS 32
-
-#define VLYNQ_CTRL_PM_ENABLE 0x80000000
-#define VLYNQ_CTRL_CLOCK_INT 0x00008000
-#define VLYNQ_CTRL_CLOCK_DIV(x) ((x & 7) << 16)
-#define VLYNQ_CTRL_INT_LOCAL 0x00004000
-#define VLYNQ_CTRL_INT_ENABLE 0x00002000
-#define VLYNQ_CTRL_INT_VECTOR(x) ((x & 0x1f) << 8)
-#define VLYNQ_CTRL_INT2CFG 0x00000080
-#define VLYNQ_CTRL_RESET 0x00000001
-
-#define VLYNQ_STATUS_RERROR 0x00000100
-#define VLYNQ_STATUS_LERROR 0x00000080
-#define VLYNQ_STATUS_LINK 0x00000001
-
-#define VINT_ENABLE 0x00000100
-#define VINT_TYPE_EDGE 0x00000080
-#define VINT_LEVEL_LOW 0x00000040
-#define VINT_VECTOR(x) (x & 0x1f)
-#define VINT_OFFSET(irq) (8 * ((irq) % 4))
-
-#define VLYNQ_AUTONEGO_V2 0x00010000
-
-struct vlynq_regs {
- volatile u32 revision;
- volatile u32 control;
- volatile u32 status;
- volatile u32 int_prio;
- volatile u32 int_status;
- volatile u32 int_pending;
- volatile u32 int_ptr;
- volatile u32 tx_offset;
- volatile struct vlynq_mapping rx_mapping[4];
- volatile u32 chip;
- volatile u32 autonego;
- volatile u32 unused[6];
- volatile u32 int_device[8];
-} __attribute__ ((packed));
-
-#ifdef VLYNQ_DEBUG
-static void vlynq_dump_regs(struct vlynq_device *dev)
-{
- int i;
- printk("VLYNQ local=%p remote=%p\n", dev->local, dev->remote);
- for (i = 0; i < 32; i++) {
- printk("VLYNQ: local %d: %08x\n", i + 1, ((u32 *)dev->local)[i]);
- printk("VLYNQ: remote %d: %08x\n", i + 1, ((u32 *)dev->remote)[i]);
- }
-}
-
-static void vlynq_dump_mem(u32 *base, int count)
-{
- int i;
- for (i = 0; i < (count + 3) / 4; i++) {
- if (i % 4 == 0) printk("\nMEM[0x%04x]:", i * 4);
- printk(" 0x%08x", *(base + i));
- }
- printk("\n");
-}
-#endif
-
-int vlynq_linked(struct vlynq_device *dev)
-{
- int i;
- for (i = 0; i < 10; i++)
- if (dev->local->status & VLYNQ_STATUS_LINK) {
- printk("%s: linked\n", dev->dev.bus_id);
- return 1;
- } else {
- mdelay(1);
- }
- return 0;
-}
-
-static void vlynq_irq_unmask(unsigned int irq)
-{
- volatile u32 val;
- struct vlynq_device *dev = irq_desc[irq].chip_data;
- int virq;
-
- BUG_ON(!dev);
- virq = irq - dev->irq_start;
- val = dev->remote->int_device[virq >> 2];
- val |= (VINT_ENABLE | virq) << VINT_OFFSET(virq);
- dev->remote->int_device[virq >> 2] = val;
-}
-
-static void vlynq_irq_mask(unsigned int irq)
-{
- volatile u32 val;
- struct vlynq_device *dev = irq_desc[irq].chip_data;
- int virq;
-
- BUG_ON(!dev);
- virq = irq - dev->irq_start;
- val = dev->remote->int_device[virq >> 2];
- val &= ~(VINT_ENABLE << VINT_OFFSET(virq));
- dev->remote->int_device[virq >> 2] = val;
-}
-
-static int vlynq_irq_type(unsigned int irq, unsigned int flow_type)
-{
- volatile u32 val;
- struct vlynq_device *dev = irq_desc[irq].chip_data;
- int virq;
-
- BUG_ON(!dev);
- virq = irq - dev->irq_start;
- val = dev->remote->int_device[virq >> 2];
- switch (flow_type & IRQ_TYPE_SENSE_MASK) {
- case IRQ_TYPE_EDGE_RISING:
- case IRQ_TYPE_EDGE_FALLING:
- case IRQ_TYPE_EDGE_BOTH:
- val |= VINT_TYPE_EDGE << VINT_OFFSET(virq);
- val &= ~(VINT_LEVEL_LOW << VINT_OFFSET(virq));
- break;
- case IRQ_TYPE_LEVEL_HIGH:
- val &= ~(VINT_TYPE_EDGE << VINT_OFFSET(virq));
- val &= ~(VINT_LEVEL_LOW << VINT_OFFSET(virq));
- break;
- case IRQ_TYPE_LEVEL_LOW:
- val &= ~(VINT_TYPE_EDGE << VINT_OFFSET(virq));
- val |= VINT_LEVEL_LOW << VINT_OFFSET(virq);
- break;
- default:
- return -EINVAL;
- }
- dev->remote->int_device[virq >> 2] = val;
- return 0;
-}
-
-static irqreturn_t vlynq_irq(int irq, void *dev_id)
-{
- struct vlynq_device *dev = dev_id;
- u32 status, ack;
- int virq = 0;
-
- status = dev->local->int_status;
- dev->local->int_status = status;
-
- if (status & (1 << dev->local_irq)) { /* Local vlynq IRQ. Ack */
- ack = dev->local->status;
- dev->local->status = ack;
- }
-
- if (status & (1 << dev->remote_irq)) { /* Remote vlynq IRQ. Ack */
- ack = dev->remote->status;
- dev->remote->status = ack;
- }
-
- status &= ~((1 << dev->local_irq) | (1 << dev->remote_irq));
- while (status) {
- if (status & 1) /* Remote device IRQ. Pass. */
- do_IRQ(dev->irq_start + virq);
- status >>= 1;
- virq++;
- }
-
- return IRQ_HANDLED;
-}
-
-static struct irq_chip vlynq_irq_chip = {
- .typename = "VLYNQ",
- .name = "vlynq",
- .unmask = vlynq_irq_unmask,
- .mask = vlynq_irq_mask,
- .set_type = vlynq_irq_type,
-};
-
-static int vlynq_setup_irq(struct vlynq_device *dev)
-{
- u32 val;
- int i;
-
- if (dev->local_irq == dev->remote_irq) {
- printk("%s: local vlynq irq should be different from remote\n",
- dev->dev.bus_id);
- return -EINVAL;
- }
-
- val = VLYNQ_CTRL_INT_VECTOR(dev->local_irq);
- val |= VLYNQ_CTRL_INT_ENABLE | VLYNQ_CTRL_INT_LOCAL |
- VLYNQ_CTRL_INT2CFG;
- dev->local->int_ptr = 0x14;
- dev->local->control |= val;
-
- val = VLYNQ_CTRL_INT_VECTOR(dev->remote_irq);
- val |= VLYNQ_CTRL_INT_ENABLE;
- dev->remote->int_ptr = 0x14;
- dev->remote->control |= val;
-
- for (i = 0; i < PER_DEVICE_IRQS; i++) {
- if ((i == dev->local_irq) || (i == dev->remote_irq))
- continue;
- irq_desc[dev->irq_start + i].status = IRQ_DISABLED;
- irq_desc[dev->irq_start + i].action = 0;
- irq_desc[dev->irq_start + i].depth = 1;
- irq_desc[dev->irq_start + i].chip = &vlynq_irq_chip;
- irq_desc[dev->irq_start + i].chip_data = dev;
- dev->remote->int_device[i >> 2] = 0;
- }
-
- if (request_irq(dev->irq, vlynq_irq, SA_SHIRQ, "vlynq", dev)) {
- printk("%s: request_irq failed\n", dev->dev.bus_id);
- return -EAGAIN;
- }
-
- return 0;
-}
-
-static void vlynq_free_irq(struct vlynq_device *dev)
-{
- free_irq(dev->irq, dev);
-}
-
-static void vlynq_device_release(struct device *dev)
-{
- struct vlynq_device *vdev = to_vlynq_device(dev);
- kfree(vdev);
-}
-
-static int vlynq_device_probe(struct device *dev)
-{
- struct vlynq_driver *drv = to_vlynq_driver(dev->driver);
- if (drv->probe)
- return drv->probe(to_vlynq_device(dev));
- return 0;
-}
-
-static int vlynq_device_remove(struct device *dev)
-{
- struct vlynq_driver *drv = to_vlynq_driver(dev->driver);
- if (drv->remove)
- return drv->remove(to_vlynq_device(dev));
- return 0;
-}
-
-int __vlynq_register_driver(struct vlynq_driver *driver, struct module *owner)
-{
- driver->driver.name = driver->name;
- driver->driver.bus = &vlynq_bus_type;
-/* driver->driver.owner = owner;*/
- return driver_register(&driver->driver);
-}
-EXPORT_SYMBOL(__vlynq_register_driver);
-
-void vlynq_unregister_driver(struct vlynq_driver *driver)
-{
- driver_unregister(&driver->driver);
-}
-EXPORT_SYMBOL(vlynq_unregister_driver);
-
-int vlynq_device_enable(struct vlynq_device *dev)
-{
- u32 div;
- int result;
- struct plat_vlynq_ops *ops = dev->dev.platform_data;
-
- result = ops->on(dev);
- if (result)
- return result;
-
- dev->local->control = 0;
- dev->remote->control = 0;
- dev->local->control = VLYNQ_CTRL_CLOCK_INT;
-
- div = ar7_dsp_freq() / 62500000;
- if (div != 0 ) {
- if (ar7_dsp_freq() / div != 62500000) {
- printk(KERN_WARNING
- "VLYNQ: Adjusted requested frequency %d to %d\n",
- 62500000, ar7_dsp_freq() / div);
- }
-
- printk("VLYNQ: Setting clock to %d (clock divider %u)\n",
- ar7_dsp_freq() / div, div);
- dev->local->control |= VLYNQ_CTRL_CLOCK_DIV((div - 1));
- }
- if (vlynq_linked(dev))
- return vlynq_setup_irq(dev);
-
- return -ENODEV;
-}
-
-void vlynq_device_disable(struct vlynq_device *dev)
-{
- struct plat_vlynq_ops *ops = dev->dev.platform_data;
-
- vlynq_free_irq(dev);
- ops->off(dev);
-}
-
-u32 vlynq_local_id(struct vlynq_device *dev)
-{
- return dev->local->chip;
-}
-
-u32 vlynq_remote_id(struct vlynq_device *dev)
-{
- return dev->remote->chip;
-}
-
-void vlynq_set_local_mapping(struct vlynq_device *dev, u32 tx_offset,
- struct vlynq_mapping *mapping)
-{
- int i;
-
- dev->local->tx_offset = tx_offset;
- for (i = 0; i < 4; i++) {
- dev->local->rx_mapping[i].offset = mapping[i].offset;
- dev->local->rx_mapping[i].size = mapping[i].size;
- }
-}
-
-void vlynq_set_remote_mapping(struct vlynq_device *dev, u32 tx_offset,
- struct vlynq_mapping *mapping)
-{
- int i;
-
- dev->remote->tx_offset = tx_offset;
- for (i = 0; i < 4; i++) {
- dev->remote->rx_mapping[i].offset = mapping[i].offset;
- dev->remote->rx_mapping[i].size = mapping[i].size;
- }
-}
-
-int vlynq_virq_to_irq(struct vlynq_device *dev, int virq)
-{
- if ((virq < 0) || (virq >= PER_DEVICE_IRQS))
- return -EINVAL;
-
- if ((virq == dev->local_irq) || (virq == dev->remote_irq))
- return -EINVAL;
-
- return dev->irq_start + virq;
-}
-
-int vlynq_irq_to_virq(struct vlynq_device *dev, int irq)
-{
- if ((irq < dev->irq_start) || (irq >= dev->irq_start + PER_DEVICE_IRQS))
- return -EINVAL;
-
- return irq - dev->irq_start;
-}
-
-int vlynq_set_local_irq(struct vlynq_device *dev, int virq)
-{
- if ((virq < 0) || (virq >= PER_DEVICE_IRQS))
- return -EINVAL;
-
- if (virq == dev->remote_irq)
- return -EINVAL;
-
- dev->local_irq = virq;
-
- return 0;
-}
-
-int vlynq_set_remote_irq(struct vlynq_device *dev, int virq)
-{
- if ((virq < 0) || (virq >= PER_DEVICE_IRQS))
- return -EINVAL;
-
- if (virq == dev->local_irq)
- return -EINVAL;
-
- dev->remote_irq = virq;
-
- return 0;
-}
-
-static int vlynq_probe(struct platform_device *pdev)
-{
- struct vlynq_device *dev;
- struct resource *regs_res, *mem_res, *irq_res;
- int len, result;
-
- if (strcmp(pdev->name, "vlynq"))
- return -ENODEV;
-
- regs_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs");
- if (!regs_res)
- return -ENODEV;
-
- mem_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mem");
- if (!mem_res)
- return -ENODEV;
-
- irq_res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "devirq");
- if (!irq_res)
- return -ENODEV;
-
- dev = kmalloc(sizeof(struct vlynq_device), GFP_KERNEL);
- if (!dev) {
- printk(KERN_ERR "vlynq: failed to allocate device structure\n");
- return -ENOMEM;
- }
-
- memset(dev, 0, sizeof(struct vlynq_device));
-
- dev->id = pdev->id;
- dev->dev.bus = &vlynq_bus_type;
- dev->dev.parent = &pdev->dev;
- snprintf(dev->dev.bus_id, BUS_ID_SIZE, "vlynq%d", dev->id);
- dev->dev.bus_id[BUS_ID_SIZE - 1] = 0;
- dev->dev.platform_data = pdev->dev.platform_data;
- dev->dev.release = vlynq_device_release;
-
- dev->regs_start = regs_res->start;
- dev->regs_end = regs_res->end;
- dev->mem_start = mem_res->start;
- dev->mem_end = mem_res->end;
-
- len = regs_res->end - regs_res->start;
- if (!request_mem_region(regs_res->start, len, dev->dev.bus_id)) {
- printk("%s: Can't request vlynq registers\n", dev->dev.bus_id);
- result = -ENXIO;
- goto fail_request;
- }
-
- dev->local = ioremap_nocache(regs_res->start, len);
- if (!dev->local) {
- printk("%s: Can't remap vlynq registers\n", dev->dev.bus_id);
- result = -ENXIO;
- goto fail_remap;
- }
-
- dev->remote = (struct vlynq_regs *)((u32)dev->local + 128);
-
- dev->irq = platform_get_irq_byname(pdev, "irq");
- dev->irq_start = irq_res->start;
- dev->irq_end = irq_res->end;
- dev->local_irq = 31;
- dev->remote_irq = 30;
-
- if (device_register(&dev->dev))
- goto fail_register;
- platform_set_drvdata(pdev, dev);
-
- printk("%s: regs 0x%p, irq %d, mem 0x%p\n",
- dev->dev.bus_id, (void *)dev->regs_start, dev->irq,
- (void *)dev->mem_start);
-
- return 0;
-
-fail_register:
-fail_remap:
- iounmap(dev->local);
-fail_request:
- release_mem_region(regs_res->start, len);
- kfree(dev);
- return result;
-}
-
-static int vlynq_remove(struct platform_device *pdev)
-{
- struct vlynq_device *dev = platform_get_drvdata(pdev);
-
- device_unregister(&dev->dev);
- release_mem_region(dev->regs_start, dev->regs_end - dev->regs_start);
-
- kfree(dev);
-
- return 0;
-}
-
-static struct platform_driver vlynq_driver = {
- .driver.name = "vlynq",
- .probe = vlynq_probe,
- .remove = vlynq_remove,
-};
-
-struct bus_type vlynq_bus_type = {
- .name = "vlynq",
- .probe = vlynq_device_probe,
- .remove = vlynq_device_remove,
-};
-EXPORT_SYMBOL(vlynq_bus_type);
-
-#ifdef CONFIG_PCI
-extern void vlynq_pci_init(void);
-#endif
-int __init vlynq_init(void)
-{
- int res = 0;
-
- res = bus_register(&vlynq_bus_type);
- if (res)
- goto fail_bus;
-
- res = platform_driver_register(&vlynq_driver);
- if (res)
- goto fail_platform;
-
-#ifdef CONFIG_PCI
- vlynq_pci_init();
-#endif
-
- return 0;
-
-fail_platform:
- bus_unregister(&vlynq_bus_type);
-fail_bus:
- return res;
-}
-
-/*
-void __devexit vlynq_exit(void)
-{
- platform_driver_unregister(&vlynq_driver);
- bus_unregister(&vlynq_bus_type);
-}
-*/
-
-
-subsys_initcall(vlynq_init);
projects / openwrt / staging / chunkeey.git / blobdiff