1 files changed, 553 insertions, 0 deletions

diff --git a/target/linux/ar7/files/arch/mips/ar7/vlynq.c b/target/linux/ar7/files/arch/mips/ar7/vlynq.c
new file mode 100644
index 000000000..c9be21472
--- /dev/null
+++ b/target/linux/ar7/files/arch/mips/ar7/vlynq.c
@@ -0,0 +1,553 @@
+/*
+ * $Id$
+ * 
+ * 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);