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7#include <linux/module.h>
8#include <linux/kernel.h>
9#include <linux/string.h>
10#include <linux/errno.h>
11#include <linux/ioport.h>
12#include <linux/interrupt.h>
13#include <linux/delay.h>
14#include <linux/netdevice.h>
15#include <linux/etherdevice.h>
16#include <linux/skbuff.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
25static const char sni_82596_string[] = "snirm_82596";
26
27#define SYSBUS 0x00004400
28
29
30#define SWAP32(x) cpu_to_le32((u32)(x))
31#define SWAP16(x) cpu_to_le16((u16)(x))
32
33#define OPT_MPU_16BIT 0x01
34
35#include "lib82596.c"
36
37MODULE_AUTHOR("Thomas Bogendoerfer");
38MODULE_DESCRIPTION("i82596 driver");
39MODULE_LICENSE("GPL");
40MODULE_ALIAS("platform:snirm_82596");
41module_param(i596_debug, int, 0);
42MODULE_PARM_DESC(i596_debug, "82596 debug mask");
43
44static inline void ca(struct net_device *dev)
45{
46 struct i596_private *lp = netdev_priv(dev);
47
48 writel(0, lp->ca);
49}
50
51
52static void mpu_port(struct net_device *dev, int c, dma_addr_t x)
53{
54 struct i596_private *lp = netdev_priv(dev);
55
56 u32 v = (u32) (c) | (u32) (x);
57
58 if (lp->options & OPT_MPU_16BIT) {
59 writew(v & 0xffff, lp->mpu_port);
60 wmb();
61 udelay(1);
62 writew(v >> 16, lp->mpu_port);
63 } else {
64 writel(v, lp->mpu_port);
65 wmb();
66 udelay(1);
67 writel(v, lp->mpu_port);
68 }
69}
70
71
72static int sni_82596_probe(struct platform_device *dev)
73{
74 struct net_device *netdevice;
75 struct i596_private *lp;
76 struct resource *res, *ca, *idprom, *options;
77 int retval = -ENOMEM;
78 void __iomem *mpu_addr;
79 void __iomem *ca_addr;
80 u8 __iomem *eth_addr;
81
82 res = platform_get_resource(dev, IORESOURCE_MEM, 0);
83 ca = platform_get_resource(dev, IORESOURCE_MEM, 1);
84 options = platform_get_resource(dev, 0, 0);
85 idprom = platform_get_resource(dev, IORESOURCE_MEM, 2);
86 if (!res || !ca || !options || !idprom)
87 return -ENODEV;
88 mpu_addr = ioremap(res->start, 4);
89 if (!mpu_addr)
90 return -ENOMEM;
91 ca_addr = ioremap(ca->start, 4);
92 if (!ca_addr)
93 goto probe_failed_free_mpu;
94
95 printk(KERN_INFO "Found i82596 at 0x%x\n", res->start);
96
97 netdevice = alloc_etherdev(sizeof(struct i596_private));
98 if (!netdevice)
99 goto probe_failed_free_ca;
100
101 SET_NETDEV_DEV(netdevice, &dev->dev);
102 platform_set_drvdata (dev, netdevice);
103
104 netdevice->base_addr = res->start;
105 netdevice->irq = platform_get_irq(dev, 0);
106
107 eth_addr = ioremap(idprom->start, 0x10);
108 if (!eth_addr)
109 goto probe_failed;
110
111
112 netdevice->dev_addr[0] = readb(eth_addr + 0x0b);
113 netdevice->dev_addr[1] = readb(eth_addr + 0x0a);
114 netdevice->dev_addr[2] = readb(eth_addr + 0x09);
115 netdevice->dev_addr[3] = readb(eth_addr + 0x08);
116 netdevice->dev_addr[4] = readb(eth_addr + 0x07);
117 netdevice->dev_addr[5] = readb(eth_addr + 0x06);
118 iounmap(eth_addr);
119
120 if (!netdevice->irq) {
121 printk(KERN_ERR "%s: IRQ not found for i82596 at 0x%lx\n",
122 __FILE__, netdevice->base_addr);
123 goto probe_failed;
124 }
125
126 lp = netdev_priv(netdevice);
127 lp->options = options->flags & IORESOURCE_BITS;
128 lp->ca = ca_addr;
129 lp->mpu_port = mpu_addr;
130
131 lp->dma = dma_alloc_coherent(&dev->dev, sizeof(struct i596_dma),
132 &lp->dma_addr, GFP_KERNEL);
133 if (!lp->dma)
134 goto probe_failed;
135
136 retval = i82596_probe(netdevice);
137 if (retval)
138 goto probe_failed_free_dma;
139 return 0;
140
141probe_failed_free_dma:
142 dma_free_coherent(&dev->dev, sizeof(struct i596_dma), lp->dma,
143 lp->dma_addr);
144probe_failed:
145 free_netdev(netdevice);
146probe_failed_free_ca:
147 iounmap(ca_addr);
148probe_failed_free_mpu:
149 iounmap(mpu_addr);
150 return retval;
151}
152
153static int sni_82596_driver_remove(struct platform_device *pdev)
154{
155 struct net_device *dev = platform_get_drvdata(pdev);
156 struct i596_private *lp = netdev_priv(dev);
157
158 unregister_netdev(dev);
159 dma_free_coherent(&pdev->dev, sizeof(struct i596_private), lp->dma,
160 lp->dma_addr);
161 iounmap(lp->ca);
162 iounmap(lp->mpu_port);
163 free_netdev (dev);
164 return 0;
165}
166
167static struct platform_driver sni_82596_driver = {
168 .probe = sni_82596_probe,
169 .remove = sni_82596_driver_remove,
170 .driver = {
171 .name = sni_82596_string,
172 },
173};
174
175static int sni_82596_init(void)
176{
177 printk(KERN_INFO SNI_82596_DRIVER_VERSION "\n");
178 return platform_driver_register(&sni_82596_driver);
179}
180
181
182static void __exit sni_82596_exit(void)
183{
184 platform_driver_unregister(&sni_82596_driver);
185}
186
187module_init(sni_82596_init);
188module_exit(sni_82596_exit);
189
