[linux.git] / drivers / net / sni_82596.c

/*
 * sni_82596.c -- driver for intel 82596 ethernet controller, as
 *  		  used in older SNI RM machines
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/bitops.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/irq.h>

#define SNI_82596_DRIVER_VERSION "SNI RM 82596 driver - Revision: 0.01"

static const char sni_82596_string[] = "snirm_82596";

#define DMA_ALLOC                      dma_alloc_coherent
#define DMA_FREE                       dma_free_coherent
#define DMA_WBACK(priv, addr, len)     do { } while (0)
#define DMA_INV(priv, addr, len)       do { } while (0)
#define DMA_WBACK_INV(priv, addr, len) do { } while (0)

#define SYSBUS      0x00004400

/* big endian CPU, 82596 little endian */
#define SWAP32(x)   cpu_to_le32((u32)(x))
#define SWAP16(x)   cpu_to_le16((u16)(x))

#define OPT_MPU_16BIT    0x01

#include "lib82596.c"

MODULE_AUTHOR("Thomas Bogendoerfer");
MODULE_DESCRIPTION("i82596 driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:snirm_82596");
module_param(i596_debug, int, 0);
MODULE_PARM_DESC(i596_debug, "82596 debug mask");

static inline void ca(struct net_device *dev)
{
	struct i596_private *lp = netdev_priv(dev);

	writel(0, lp->ca);
}


static void mpu_port(struct net_device *dev, int c, dma_addr_t x)
{
	struct i596_private *lp = netdev_priv(dev);

	u32 v = (u32) (c) | (u32) (x);

	if (lp->options & OPT_MPU_16BIT) {
		writew(v & 0xffff, lp->mpu_port);
		wmb();  /* order writes to MPU port */
		udelay(1);
		writew(v >> 16, lp->mpu_port);
	} else {
		writel(v, lp->mpu_port);
		wmb();  /* order writes to MPU port */
		udelay(1);
		writel(v, lp->mpu_port);
	}
}


static int __devinit sni_82596_probe(struct platform_device *dev)
{
	struct	net_device *netdevice;
	struct i596_private *lp;
	struct  resource *res, *ca, *idprom, *options;
	int	retval = -ENOMEM;
	void __iomem *mpu_addr;
	void __iomem *ca_addr;
	u8 __iomem *eth_addr;

	res = platform_get_resource(dev, IORESOURCE_MEM, 0);
	ca = platform_get_resource(dev, IORESOURCE_MEM, 1);
	options = platform_get_resource(dev, 0, 0);
	idprom = platform_get_resource(dev, IORESOURCE_MEM, 2);
	if (!res || !ca || !options || !idprom)
		return -ENODEV;
	mpu_addr = ioremap_nocache(res->start, 4);
	if (!mpu_addr)
		return -ENOMEM;
	ca_addr = ioremap_nocache(ca->start, 4);
	if (!ca_addr)
		goto probe_failed_free_mpu;

	printk(KERN_INFO "Found i82596 at 0x%x\n", res->start);

	netdevice = alloc_etherdev(sizeof(struct i596_private));
	if (!netdevice)
		goto probe_failed_free_ca;

	SET_NETDEV_DEV(netdevice, &dev->dev);
	platform_set_drvdata (dev, netdevice);

	netdevice->base_addr = res->start;
	netdevice->irq = platform_get_irq(dev, 0);

	eth_addr = ioremap_nocache(idprom->start, 0x10);
	if (!eth_addr)
		goto probe_failed;

	/* someone seems to like messed up stuff */
	netdevice->dev_addr[0] = readb(eth_addr + 0x0b);
	netdevice->dev_addr[1] = readb(eth_addr + 0x0a);
	netdevice->dev_addr[2] = readb(eth_addr + 0x09);
	netdevice->dev_addr[3] = readb(eth_addr + 0x08);
	netdevice->dev_addr[4] = readb(eth_addr + 0x07);
	netdevice->dev_addr[5] = readb(eth_addr + 0x06);
	iounmap(eth_addr);

	if (!netdevice->irq) {
		printk(KERN_ERR "%s: IRQ not found for i82596 at 0x%lx\n",
			__FILE__, netdevice->base_addr);
		goto probe_failed;
	}

	lp = netdev_priv(netdevice);
	lp->options = options->flags & IORESOURCE_BITS;
	lp->ca = ca_addr;
	lp->mpu_port = mpu_addr;

	retval = i82596_probe(netdevice);
	if (retval == 0)
		return 0;

probe_failed:
	free_netdev(netdevice);
probe_failed_free_ca:
	iounmap(ca_addr);
probe_failed_free_mpu:
	iounmap(mpu_addr);
	return retval;
}

static int __devexit sni_82596_driver_remove(struct platform_device *pdev)
{
	struct net_device *dev = platform_get_drvdata(pdev);
	struct i596_private *lp = netdev_priv(dev);

	unregister_netdev(dev);
	DMA_FREE(dev->dev.parent, sizeof(struct i596_private),
		 lp->dma, lp->dma_addr);
	iounmap(lp->ca);
	iounmap(lp->mpu_port);
	free_netdev (dev);
	return 0;
}

static struct platform_driver sni_82596_driver = {
	.probe	= sni_82596_probe,
	.remove	= __devexit_p(sni_82596_driver_remove),
	.driver	= {
		.name	= sni_82596_string,
		.owner	= THIS_MODULE,
	},
};

static int __devinit sni_82596_init(void)
{
	printk(KERN_INFO SNI_82596_DRIVER_VERSION "\n");
	return platform_driver_register(&sni_82596_driver);
}


static void __exit sni_82596_exit(void)
{
	platform_driver_unregister(&sni_82596_driver);
}

module_init(sni_82596_init);
module_exit(sni_82596_exit);
Commit	Line	Data
f2ec8030 TB	1	/*
	2	* sni_82596.c -- driver for intel 82596 ethernet controller, as
	3	* used in older SNI RM machines
	4	*/
	5
	6	#include <linux/module.h>
	7	#include <linux/kernel.h>
	8	#include <linux/string.h>
	9	#include <linux/errno.h>
	10	#include <linux/ioport.h>
f2ec8030 TB	11	#include <linux/interrupt.h>
	12	#include <linux/delay.h>
	13	#include <linux/netdevice.h>
	14	#include <linux/etherdevice.h>
	15	#include <linux/skbuff.h>
	16	#include <linux/init.h>
	17	#include <linux/types.h>
	18	#include <linux/bitops.h>
	19	#include <linux/platform_device.h>
	20	#include <linux/io.h>
	21	#include <linux/irq.h>
	22
	23	#define SNI_82596_DRIVER_VERSION "SNI RM 82596 driver - Revision: 0.01"
	24
	25	static const char sni_82596_string[] = "snirm_82596";
	26
	27	#define DMA_ALLOC dma_alloc_coherent
	28	#define DMA_FREE dma_free_coherent
	29	#define DMA_WBACK(priv, addr, len) do { } while (0)
	30	#define DMA_INV(priv, addr, len) do { } while (0)
	31	#define DMA_WBACK_INV(priv, addr, len) do { } while (0)
	32
	33	#define SYSBUS 0x00004400
	34
	35	/* big endian CPU, 82596 little endian */
	36	#define SWAP32(x) cpu_to_le32((u32)(x))
	37	#define SWAP16(x) cpu_to_le16((u16)(x))
	38
	39	#define OPT_MPU_16BIT 0x01
	40
	41	#include "lib82596.c"
	42
	43	MODULE_AUTHOR("Thomas Bogendoerfer");
	44	MODULE_DESCRIPTION("i82596 driver");
	45	MODULE_LICENSE("GPL");
72abb461	46	MODULE_ALIAS("platform:snirm_82596");
f2ec8030 TB	47	module_param(i596_debug, int, 0);
	48	MODULE_PARM_DESC(i596_debug, "82596 debug mask");
	49
	50	static inline void ca(struct net_device *dev)
	51	{
	52	struct i596_private *lp = netdev_priv(dev);
	53
	54	writel(0, lp->ca);
	55	}
	56
	57
	58	static void mpu_port(struct net_device *dev, int c, dma_addr_t x)
	59	{
	60	struct i596_private *lp = netdev_priv(dev);
	61
	62	u32 v = (u32) (c) \| (u32) (x);
	63
	64	if (lp->options & OPT_MPU_16BIT) {
	65	writew(v & 0xffff, lp->mpu_port);
	66	wmb(); /* order writes to MPU port */
	67	udelay(1);
	68	writew(v >> 16, lp->mpu_port);
	69	} else {
	70	writel(v, lp->mpu_port);
	71	wmb(); /* order writes to MPU port */
	72	udelay(1);
	73	writel(v, lp->mpu_port);
	74	}
	75	}
	76
	77
	78	static int __devinit sni_82596_probe(struct platform_device *dev)
	79	{
	80	struct net_device *netdevice;
	81	struct i596_private *lp;
	82	struct resource res, ca, idprom, options;
	83	int retval = -ENOMEM;
	84	void __iomem *mpu_addr;
	85	void __iomem *ca_addr;
	86	u8 __iomem *eth_addr;
	87
	88	res = platform_get_resource(dev, IORESOURCE_MEM, 0);
	89	ca = platform_get_resource(dev, IORESOURCE_MEM, 1);
	90	options = platform_get_resource(dev, 0, 0);
	91	idprom = platform_get_resource(dev, IORESOURCE_MEM, 2);
	92	if (!res \|\| !ca \|\| !options \|\| !idprom)
	93	return -ENODEV;
	94	mpu_addr = ioremap_nocache(res->start, 4);
	95	if (!mpu_addr)
	96	return -ENOMEM;
	97	ca_addr = ioremap_nocache(ca->start, 4);
	98	if (!ca_addr)
	99	goto probe_failed_free_mpu;
	100
	101	printk(KERN_INFO "Found i82596 at 0x%x\n", res->start);
	102
	103	netdevice = alloc_etherdev(sizeof(struct i596_private));
	104	if (!netdevice)
	105	goto probe_failed_free_ca;
	106
	107	SET_NETDEV_DEV(netdevice, &dev->dev);
	108	platform_set_drvdata (dev, netdevice);
	109
	110	netdevice->base_addr = res->start;
111	netdevice->irq = platform_get_irq(dev, 0);
112
113	eth_addr = ioremap_nocache(idprom->start, 0x10);
114	if (!eth_addr)
115	goto probe_failed;
116
117	/* someone seems to like messed up stuff */
118	netdevice->dev_addr[0] = readb(eth_addr + 0x0b);
119	netdevice->dev_addr[1] = readb(eth_addr + 0x0a);
120	netdevice->dev_addr[2] = readb(eth_addr + 0x09);
121	netdevice->dev_addr[3] = readb(eth_addr + 0x08);
122	netdevice->dev_addr[4] = readb(eth_addr + 0x07);
123	netdevice->dev_addr[5] = readb(eth_addr + 0x06);
124	iounmap(eth_addr);
125
126	if (!netdevice->irq) {
127	printk(KERN_ERR "%s: IRQ not found for i82596 at 0x%lx\n",
128	__FILE__, netdevice->base_addr);
129	goto probe_failed;
130	}
131
132	lp = netdev_priv(netdevice);
133	lp->options = options->flags & IORESOURCE_BITS;
134	lp->ca = ca_addr;
135	lp->mpu_port = mpu_addr;
136
137	retval = i82596_probe(netdevice);
138	if (retval == 0)
139	return 0;
140
141	probe_failed:
142	free_netdev(netdevice);
143	probe_failed_free_ca:
144	iounmap(ca_addr);
145	probe_failed_free_mpu:
146	iounmap(mpu_addr);
147	return retval;
148	}
149
150	static int __devexit sni_82596_driver_remove(struct platform_device *pdev)
151	{
152	struct net_device *dev = platform_get_drvdata(pdev);
153	struct i596_private *lp = netdev_priv(dev);
154
155	unregister_netdev(dev);
156	DMA_FREE(dev->dev.parent, sizeof(struct i596_private),
157	lp->dma, lp->dma_addr);
158	iounmap(lp->ca);
159	iounmap(lp->mpu_port);
160	free_netdev (dev);
161	return 0;
162	}
163
164	static struct platform_driver sni_82596_driver = {
165	.probe = sni_82596_probe,
166	.remove = __devexit_p(sni_82596_driver_remove),
167	.driver = {
168	.name = sni_82596_string,
72abb461	169	.owner = THIS_MODULE,
f2ec8030 TB	170	},
	171	};
	172
	173	static int __devinit sni_82596_init(void)
	174	{
	175	printk(KERN_INFO SNI_82596_DRIVER_VERSION "\n");
	176	return platform_driver_register(&sni_82596_driver);
	177	}
	178
	179
	180	static void __exit sni_82596_exit(void)
	181	{
	182	platform_driver_unregister(&sni_82596_driver);
	183	}
	184
	185	module_init(sni_82596_init);
	186	module_exit(sni_82596_exit);