diff options
Diffstat (limited to 'target/linux/ar7-2.6/files/arch/mips/ar7/vlynq.c')
| -rw-r--r-- | target/linux/ar7-2.6/files/arch/mips/ar7/vlynq.c | 553 |
1 files changed, 0 insertions, 553 deletions
diff --git a/target/linux/ar7-2.6/files/arch/mips/ar7/vlynq.c b/target/linux/ar7-2.6/files/arch/mips/ar7/vlynq.c deleted file mode 100644 index c9be21472..000000000 --- a/target/linux/ar7-2.6/files/arch/mips/ar7/vlynq.c +++ /dev/null @@ -1,553 +0,0 @@ -/* - * $Id$ - * - * 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); |