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