mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2025-04-21 12:27:27 +03:00
Add ar7-2.6 port (marked as broken for now).
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@6600 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
ejka
543
target/linux/ar7-2.6/files/arch/mips/ar7/vlynq.c
Normal file
543
target/linux/ar7-2.6/files/arch/mips/ar7/vlynq.c
Normal file
@@ -0,0 +1,543 @@
|
||||
/*
|
||||
* $Id$
|
||||
*
|
||||
* 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/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 << 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 = {
|
||||
.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, "AR7 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 val;
|
||||
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;
|
||||
|
||||
if (vlynq_linked(dev))
|
||||
return vlynq_setup_irq(dev);
|
||||
|
||||
for (val = 0; val < 8; val++) {
|
||||
dev->local->control = VLYNQ_CTRL_CLOCK_DIV(val) |
|
||||
VLYNQ_CTRL_CLOCK_INT;
|
||||
if (vlynq_linked(dev))
|
||||
return vlynq_setup_irq(dev);
|
||||
}
|
||||
}
|
||||
|
||||
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);
|
||||
Reference in New Issue
Block a user